/* roulang page: index */
:root {
            --yb-black: #0E1116;
            --yb-charcoal: #161B22;
            --yb-charcoal-light: #1C232C;
            --yb-white: #F4F6F8;
            --yb-gray: #9AA3AE;
            --yb-gray-dark: #5A6472;
            --yb-accent: #C6FF3D;
            --yb-accent-hover: #D6FF6E;
            --yb-cyan: #5EE6D0;
            --yb-alert: #E36B4A;
            --yb-border: #2A303A;
            --yb-radius-card: 12px;
            --yb-radius-btn: 8px;
            --yb-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
            --yb-shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.3);
            --yb-transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
            --yb-font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --yb-font-mono: 'Roboto Mono', 'SF Mono', 'DIN', 'Courier New', monospace;
            --yb-header-height: 72px;
            --yb-bottom-cta-height: 72px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: calc(var(--yb-header-height) + 16px);
        }

        body {
            font-family: var(--yb-font-sans);
            background-color: var(--yb-black);
            color: var(--yb-white);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-bottom: 0;
            overflow-x: hidden;
        }

        a {
            color: var(--yb-accent);
            text-decoration: none;
            transition: color var(--yb-transition), border-color var(--yb-transition), background-color var(--yb-transition);
        }

        a:hover {
            color: var(--yb-accent-hover);
        }

        a:focus-visible {
            outline: 2px solid var(--yb-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--yb-white);
            margin-bottom: 0.5rem;
        }

        h1 {
            font-weight: 900;
        }

        h2 {
            font-weight: 800;
            font-size: clamp(1.6rem, 3vw, 2.4rem);
        }

        h3 {
            font-weight: 700;
            font-size: clamp(1.2rem, 2vw, 1.5rem);
        }

        h4 {
            font-weight: 700;
            font-size: 1.1rem;
        }

        p {
            margin-bottom: 1rem;
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        .container-wide {
            max-width: 1360px;
            padding-left: 20px;
            padding-right: 20px;
            margin: 0 auto;
        }

        section {
            padding: 80px 0;
            position: relative;
        }

        .section-sm {
            padding: 48px 0;
        }

        .section-lg {
            padding: 100px 0;
        }

        .bg-charcoal {
            background-color: var(--yb-charcoal);
        }

        .bg-charcoal-light {
            background-color: var(--yb-charcoal-light);
        }

        .section-divider {
            border-top: 1px solid var(--yb-border);
        }

        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--yb-cyan);
            margin-bottom: 8px;
            position: relative;
            padding-left: 16px;
        }

        .section-tag::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 6px;
            height: 6px;
            background: var(--yb-cyan);
            border-radius: 50%;
        }

        .section-title {
            margin-bottom: 12px;
        }

        .section-desc {
            color: var(--yb-gray);
            font-size: 1rem;
            max-width: 680px;
            margin-bottom: 2.5rem;
        }

        .text-accent {
            color: var(--yb-accent);
        }

        .text-cyan {
            color: var(--yb-cyan);
        }

        .text-gray {
            color: var(--yb-gray);
        }

        .fw-900 {
            font-weight: 900;
        }

        .fw-800 {
            font-weight: 800;
        }

        .fw-700 {
            font-weight: 700;
        }

        .mono-font {
            font-family: var(--yb-font-mono);
            font-weight: 700;
        }

        /* ============ NAVBAR ============ */
        .yb-navbar {
            background-color: rgba(14, 17, 22, 0.96);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--yb-border);
            min-height: var(--yb-header-height);
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: sticky;
            top: 0;
            z-index: 1030;
            transition: box-shadow var(--yb-transition);
        }

        .yb-navbar.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        .yb-brand {
            font-size: 1.35rem;
            font-weight: 900;
            color: var(--yb-white);
            letter-spacing: 0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .yb-brand .brand-dot {
            width: 10px;
            height: 10px;
            background: var(--yb-accent);
            border-radius: 50%;
            flex-shrink: 0;
            box-shadow: 0 0 12px rgba(198, 255, 61, 0.6);
        }

        .yb-brand:hover {
            color: var(--yb-white);
        }

        .yb-nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .yb-nav-links a {
            color: var(--yb-gray);
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            padding: 6px 0;
            transition: color var(--yb-transition);
        }

        .yb-nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--yb-accent);
            transition: width var(--yb-transition);
        }

        .yb-nav-links a:hover,
        .yb-nav-links a.active {
            color: var(--yb-white);
        }

        .yb-nav-links a:hover::after,
        .yb-nav-links a.active::after {
            width: 100%;
        }

        .yb-nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn {
            border-radius: var(--yb-radius-btn);
            font-weight: 700;
            font-size: 0.9rem;
            padding: 10px 22px;
            transition: all var(--yb-transition);
            border: none;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .btn:focus-visible {
            outline: 2px solid var(--yb-accent);
            outline-offset: 3px;
            box-shadow: none;
        }

        .btn-primary-yb {
            background: var(--yb-accent);
            color: var(--yb-black);
            box-shadow: 0 0 20px rgba(198, 255, 61, 0.3);
        }

        .btn-primary-yb:hover,
        .btn-primary-yb:focus {
            background: var(--yb-accent-hover);
            color: var(--yb-black);
            box-shadow: 0 0 30px rgba(198, 255, 61, 0.5);
            transform: translateY(-1px);
        }

        .btn-primary-yb:active {
            transform: translateY(0);
            box-shadow: 0 0 16px rgba(198, 255, 61, 0.35);
        }

        .btn-outline-yb {
            background: transparent;
            color: var(--yb-white);
            border: 1px solid var(--yb-border);
        }

        .btn-outline-yb:hover,
        .btn-outline-yb:focus {
            border-color: var(--yb-accent);
            color: var(--yb-accent);
            background: rgba(198, 255, 61, 0.05);
            transform: translateY(-1px);
        }

        .btn-outline-yb:active {
            transform: translateY(0);
        }

        .btn-sm-yb {
            padding: 8px 16px;
            font-size: 0.85rem;
        }

        .navbar-toggler-yb {
            display: none;
            background: none;
            border: none;
            color: var(--yb-white);
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
        }

        .navbar-toggler-yb:focus-visible {
            outline: 2px solid var(--yb-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ============ HERO ============ */
        .yb-hero {
            min-height: 92vh;
            min-height: 92svh;
            background-image: url('/assets/images/ec89d7a761799b53.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
            display: flex;
            align-items: center;
            padding: 120px 0 80px;
            overflow: hidden;
        }

        .yb-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(14, 17, 22, 0.75) 0%, rgba(14, 17, 22, 0.88) 55%, rgba(14, 17, 22, 0.96) 100%);
        }

        .yb-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(198, 255, 61, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(198, 255, 61, 0.03) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
        }

        .yb-hero-content {
            position: relative;
            z-index: 2;
            padding: 40px 0;
        }

        .yb-hero .hero-badge {
            display: inline-block;
            background: rgba(198, 255, 61, 0.12);
            color: var(--yb-accent);
            font-size: 0.85rem;
            font-weight: 700;
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 20px;
            border: 1px solid rgba(198, 255, 61, 0.2);
        }

        .yb-hero h1 {
            font-size: clamp(2.8rem, 6vw, 5rem);
            letter-spacing: 0.04em;
            margin-bottom: 16px;
            line-height: 1.1;
        }

        .yb-hero .hero-subtitle {
            font-size: 1.1rem;
            color: var(--yb-gray);
            max-width: 640px;
            margin-bottom: 32px;
            line-height: 1.8;
        }

        .yb-hero .hero-desc-full {
            font-size: 0.95rem;
            color: var(--yb-gray);
            max-width: 560px;
            line-height: 1.8;
            margin-bottom: 32px;
            opacity: 0.9;
        }

        .yb-hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }

        .yb-hero-stats {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
            border-top: 1px solid rgba(244, 246, 248, 0.1);
            padding-top: 28px;
            max-width: 560px;
        }

        .yb-hero-stats .stat-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .yb-hero-stats .stat-num {
            font-family: var(--yb-font-mono);
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--yb-accent);
            letter-spacing: 0.02em;
        }

        .yb-hero-stats .stat-label {
            font-size: 0.8rem;
            color: var(--yb-gray);
            letter-spacing: 0.04em;
        }

        /* ============ SEARCH BAR SECTION ============ */
        .yb-search-section {
            padding: 32px 0;
            border-bottom: 1px solid var(--yb-border);
            background: var(--yb-charcoal);
        }

        .yb-search-bar {
            display: flex;
            align-items: center;
            gap: 12px;
            background: var(--yb-black);
            border: 1px solid var(--yb-border);
            border-radius: 12px;
            padding: 8px 16px;
            max-width: 680px;
            margin: 0 auto;
            transition: border-color var(--yb-transition);
        }

        .yb-search-bar:focus-within {
            border-color: var(--yb-accent);
            box-shadow: 0 0 20px rgba(198, 255, 61, 0.15);
        }

        .yb-search-bar .bi-search {
            color: var(--yb-gray);
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .yb-search-bar input {
            background: none;
            border: none;
            color: var(--yb-white);
            font-size: 0.95rem;
            width: 100%;
            padding: 8px 0;
            outline: none;
        }

        .yb-search-bar input::placeholder {
            color: var(--yb-gray-dark);
        }

        .yb-search-bar .search-btn {
            background: var(--yb-accent);
            color: var(--yb-black);
            border: none;
            border-radius: 6px;
            padding: 6px 18px;
            font-weight: 700;
            font-size: 0.85rem;
            cursor: pointer;
            transition: all var(--yb-transition);
            flex-shrink: 0;
        }

        .yb-search-bar .search-btn:hover {
            background: var(--yb-accent-hover);
            box-shadow: 0 0 14px rgba(198, 255, 61, 0.4);
        }

        .yb-search-tags {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            justify-content: center;
            margin-top: 16px;
        }

        .yb-search-tags .tag-chip {
            font-size: 0.8rem;
            color: var(--yb-gray);
            background: var(--yb-charcoal-light);
            border: 1px solid var(--yb-border);
            padding: 4px 14px;
            border-radius: 20px;
            transition: all var(--yb-transition);
            cursor: default;
        }

        .yb-search-tags .tag-chip:hover {
            color: var(--yb-accent);
            border-color: rgba(198, 255, 61, 0.3);
        }

        /* ============ SELLING POINTS ============ */
        .yb-selling-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            align-items: start;
            position: relative;
        }

        .yb-selling-card {
            background: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            padding: 32px 28px;
            position: relative;
            transition: all var(--yb-transition);
            box-shadow: var(--yb-shadow-sm);
        }

        .yb-selling-card:hover {
            transform: translateY(-4px);
            border-color: var(--yb-accent);
            box-shadow: var(--yb-shadow);
        }

        .yb-selling-card:nth-child(1) {
            margin-top: 0;
        }

        .yb-selling-card:nth-child(2) {
            margin-top: 32px;
        }

        .yb-selling-card:nth-child(3) {
            margin-top: 16px;
        }

        .yb-selling-card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 16px;
            background: rgba(198, 255, 61, 0.1);
            color: var(--yb-accent);
            flex-shrink: 0;
        }

        .yb-selling-card:nth-child(2) .card-icon {
            background: rgba(94, 230, 208, 0.1);
            color: var(--yb-cyan);
        }

        .yb-selling-card:nth-child(3) .card-icon {
            background: rgba(227, 107, 74, 0.1);
            color: var(--yb-alert);
        }

        .yb-selling-card h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
        }

        .yb-selling-card p {
            color: var(--yb-gray);
            font-size: 0.92rem;
            margin-bottom: 0;
            line-height: 1.75;
        }

        .connector-line {
            position: absolute;
            height: 2px;
            background: rgba(198, 255, 61, 0.2);
            top: 40px;
            z-index: 0;
            display: none;
        }

        @media (min-width: 1200px) {
            .connector-line {
                display: block;
                left: 32%;
                right: 32%;
                top: 48px;
            }
        }

        /* ============ DATA BAND ============ */
        .yb-data-band {
            background: var(--yb-charcoal-light);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            padding: 32px 28px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
            overflow: hidden;
        }

        .yb-data-band::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--yb-accent), var(--yb-cyan));
        }

        .yb-data-item {
            text-align: center;
            padding: 8px 0;
        }

        .yb-data-item .data-num {
            font-family: var(--yb-font-mono);
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--yb-white);
            letter-spacing: 0.02em;
            line-height: 1.1;
            margin-bottom: 4px;
        }

        .yb-data-item .data-num .unit {
            font-size: 1rem;
            color: var(--yb-gray);
            font-weight: 500;
            margin-left: 2px;
        }

        .yb-data-item .data-label {
            font-size: 0.85rem;
            color: var(--yb-gray);
            letter-spacing: 0.04em;
        }

        /* ============ CATEGORY MATRIX ============ */
        .yb-cat-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .yb-cat-card {
            background: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            overflow: hidden;
            position: relative;
            transition: all var(--yb-transition);
            box-shadow: var(--yb-shadow-sm);
            display: block;
            text-decoration: none;
            color: var(--yb-white);
        }

        .yb-cat-card:hover {
            transform: translateY(-4px);
            border-color: var(--yb-accent);
            box-shadow: var(--yb-shadow);
            color: var(--yb-white);
        }

        .yb-cat-card .cat-img {
            height: 200px;
            object-fit: cover;
            width: 100%;
            display: block;
            background: var(--yb-charcoal-light);
        }

        .yb-cat-card .cat-body {
            padding: 24px 28px;
            position: relative;
        }

        .yb-cat-card .cat-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--yb-white);
        }

        .yb-cat-card .cat-desc {
            color: var(--yb-gray);
            font-size: 0.9rem;
            margin-bottom: 0;
            line-height: 1.65;
        }

        .yb-cat-card .cat-link {
            display: inline-block;
            margin-top: 12px;
            font-weight: 700;
            font-size: 0.85rem;
            color: var(--yb-accent);
        }

        .yb-cat-card:hover .cat-link {
            color: var(--yb-accent-hover);
        }

        /* ============ SCENE SHOWCASE ============ */
        .yb-scene-showcase {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }

        .yb-scene-visual {
            border-radius: var(--yb-radius-card);
            overflow: hidden;
            position: relative;
            box-shadow: var(--yb-shadow);
            border: 1px solid var(--yb-border);
        }

        .yb-scene-visual img {
            width: 100%;
            height: 360px;
            object-fit: cover;
            display: block;
        }

        .yb-scene-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(14, 17, 22, 0.1) 0%, rgba(14, 17, 22, 0.5) 100%);
            pointer-events: none;
        }

        .yb-scene-text {
            padding: 12px 0;
        }

        .yb-scene-text .scene-tag-icon {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(94, 230, 208, 0.1);
            color: var(--yb-cyan);
            padding: 4px 14px;
            border-radius: 16px;
            font-size: 0.8rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        /* ============ BRAND INTRO ============ */
        .yb-brand-intro {
            background: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            padding: 48px 40px;
            position: relative;
            overflow: hidden;
        }

        .yb-brand-intro::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(198, 255, 61, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .yb-brand-intro .brand-intro-content {
            max-width: 720px;
            position: relative;
            z-index: 1;
        }

        .yb-brand-intro .brand-intro-content p {
            color: var(--yb-gray);
            line-height: 1.85;
            margin-bottom: 1.25rem;
        }

        .yb-brand-intro .brand-intro-content p:last-child {
            margin-bottom: 0;
        }

        /* ============ EVENT CALENDAR ============ */
        .yb-event-timeline {
            position: relative;
            padding-left: 32px;
            border-left: 2px solid var(--yb-border);
            margin-left: 8px;
        }

        .yb-event-item {
            position: relative;
            padding: 20px 0 20px 24px;
            border-bottom: 1px solid rgba(42, 48, 58, 0.5);
            transition: all var(--yb-transition);
        }

        .yb-event-item:last-child {
            border-bottom: none;
        }

        .yb-event-item::before {
            content: '';
            position: absolute;
            left: -38px;
            top: 28px;
            width: 10px;
            height: 10px;
            background: var(--yb-accent);
            border-radius: 50%;
            border: 2px solid var(--yb-black);
            box-shadow: 0 0 12px rgba(198, 255, 61, 0.5);
        }

        .yb-event-item .event-date {
            font-family: var(--yb-font-mono);
            font-size: 0.85rem;
            color: var(--yb-cyan);
            font-weight: 700;
            letter-spacing: 0.04em;
            margin-bottom: 4px;
        }

        .yb-event-item .event-title {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--yb-white);
            margin-bottom: 2px;
        }

        .yb-event-item .event-meta {
            font-size: 0.85rem;
            color: var(--yb-gray);
        }

        /* ============ TEAM/PLAYER CARDS ============ */
        .yb-team-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .yb-team-card {
            background: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            overflow: hidden;
            transition: all var(--yb-transition);
            box-shadow: var(--yb-shadow-sm);
        }

        .yb-team-card:hover {
            transform: translateY(-4px);
            border-color: var(--yb-cyan);
            box-shadow: var(--yb-shadow);
        }

        .yb-team-card .team-img {
            height: 180px;
            object-fit: cover;
            width: 100%;
            display: block;
        }

        .yb-team-card .team-body {
            padding: 20px 22px;
        }

        .yb-team-card .team-name {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 6px;
            color: var(--yb-white);
        }

        .yb-team-card .team-role {
            font-size: 0.8rem;
            color: var(--yb-cyan);
            font-weight: 600;
            margin-bottom: 8px;
        }

        .yb-team-card .team-stats {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 10px;
            padding-top: 12px;
            border-top: 1px solid rgba(42, 48, 58, 0.5);
        }

        .yb-team-card .team-stat {
            font-size: 0.8rem;
            color: var(--yb-gray);
        }

        .yb-team-card .team-stat span {
            color: var(--yb-white);
            font-weight: 700;
            font-family: var(--yb-font-mono);
        }

        /* ============ RANKING LIST ============ */
        .yb-ranking-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            counter-reset: rank-counter;
        }

        .yb-ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: 8px;
            padding: 14px 20px;
            transition: all var(--yb-transition);
            counter-increment: rank-counter;
        }

        .yb-ranking-item:hover {
            border-color: var(--yb-accent);
            transform: translateX(4px);
        }

        .yb-ranking-item .rank-num {
            font-family: var(--yb-font-mono);
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--yb-gray);
            min-width: 36px;
            text-align: center;
        }

        .yb-ranking-item:nth-child(1) .rank-num {
            color: var(--yb-accent);
        }

        .yb-ranking-item:nth-child(2) .rank-num {
            color: var(--yb-cyan);
        }

        .yb-ranking-item:nth-child(3) .rank-num {
            color: var(--yb-alert);
        }

        .yb-ranking-item .rank-content {
            flex: 1;
        }

        .yb-ranking-item .rank-title {
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--yb-white);
            margin-bottom: 2px;
        }

        .yb-ranking-item .rank-meta {
            font-size: 0.8rem;
            color: var(--yb-gray);
        }

        .yb-ranking-item .rank-badge {
            background: rgba(198, 255, 61, 0.1);
            color: var(--yb-accent);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 12px;
            white-space: nowrap;
        }

        /* ============ SOCIAL PROOF ============ */
        .yb-proof-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .yb-proof-card {
            background: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--yb-transition);
        }

        .yb-proof-card:hover {
            border-color: rgba(198, 255, 61, 0.4);
            transform: translateY(-2px);
        }

        .yb-proof-card .proof-quote {
            color: var(--yb-gray);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .yb-proof-card .proof-author {
            color: var(--yb-white);
            font-weight: 700;
            font-size: 0.9rem;
        }

        .yb-proof-card .proof-org {
            color: var(--yb-gray);
            font-size: 0.8rem;
        }

        /* ============ COMPARE TABLE ============ */
        .yb-compare-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            align-items: stretch;
        }

        .yb-compare-col {
            background: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            padding: 32px 28px;
        }

        .yb-compare-col.highlight {
            border-color: var(--yb-accent);
            background: rgba(198, 255, 61, 0.04);
            position: relative;
        }

        .yb-compare-col.highlight::before {
            content: '推荐';
            position: absolute;
            top: -12px;
            right: 24px;
            background: var(--yb-accent);
            color: var(--yb-black);
            font-size: 0.75rem;
            font-weight: 900;
            padding: 4px 14px;
            border-radius: 4px;
            letter-spacing: 0.06em;
        }

        .yb-compare-col.dimmed {
            background: rgba(22, 27, 34, 0.6);
            border-color: rgba(42, 48, 58, 0.6);
        }

        .yb-compare-col .compare-header {
            font-weight: 800;
            font-size: 1.2rem;
            margin-bottom: 16px;
            color: var(--yb-white);
        }

        .yb-compare-col.dimmed .compare-header {
            color: var(--yb-gray);
        }

        .yb-compare-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .yb-compare-col ul li {
            padding: 10px 0;
            border-bottom: 1px solid rgba(42, 48, 58, 0.4);
            color: var(--yb-gray);
            font-size: 0.9rem;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            line-height: 1.6;
        }

        .yb-compare-col ul li:last-child {
            border-bottom: none;
        }

        .yb-compare-col ul li .bi-check-circle-fill {
            color: var(--yb-accent);
            flex-shrink: 0;
            margin-top: 2px;
        }

        .yb-compare-col.dimmed ul li .bi-x-circle {
            color: var(--yb-alert);
            flex-shrink: 0;
            margin-top: 2px;
        }

        /* ============ NEWS CARDS ============ */
        .yb-news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .yb-news-card {
            background: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            overflow: hidden;
            transition: all var(--yb-transition);
            box-shadow: var(--yb-shadow-sm);
            display: block;
            text-decoration: none;
            color: var(--yb-white);
        }

        .yb-news-card:hover {
            transform: translateY(-4px);
            border-color: var(--yb-accent);
            box-shadow: var(--yb-shadow);
            color: var(--yb-white);
        }

        .yb-news-card .news-img {
            height: 170px;
            object-fit: cover;
            width: 100%;
            display: block;
        }

        .yb-news-card .news-body {
            padding: 20px 22px;
        }

        .yb-news-card .news-tag {
            font-size: 0.75rem;
            color: var(--yb-cyan);
            font-weight: 700;
            margin-bottom: 6px;
        }

        .yb-news-card .news-title {
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 8px;
            line-height: 1.45;
        }

        .yb-news-card .news-desc {
            color: var(--yb-gray);
            font-size: 0.85rem;
            line-height: 1.6;
            margin-bottom: 0;
        }

        .yb-more-link {
            display: inline-block;
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--yb-accent);
            margin-top: 24px;
            transition: color var(--yb-transition);
        }

        .yb-more-link:hover {
            color: var(--yb-accent-hover);
        }

        /* ============ GEAR SECTION ============ */
        .yb-gear-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .yb-gear-card {
            background: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            overflow: hidden;
            transition: all var(--yb-transition);
        }

        .yb-gear-card:hover {
            transform: translateY(-4px);
            border-color: var(--yb-accent);
        }

        .yb-gear-card .gear-img {
            height: 160px;
            object-fit: cover;
            width: 100%;
            display: block;
        }

        .yb-gear-card .gear-body {
            padding: 20px 22px;
        }

        .yb-gear-card .gear-name {
            font-weight: 700;
            font-size: 1rem;
            color: var(--yb-white);
            margin-bottom: 6px;
        }

        .yb-gear-card .gear-rating {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 8px;
        }

        .yb-gear-card .gear-rating .stars {
            color: var(--yb-accent);
            font-size: 0.9rem;
            letter-spacing: 2px;
        }

        .yb-gear-card .gear-rating .score {
            font-family: var(--yb-font-mono);
            font-weight: 700;
            color: var(--yb-white);
            font-size: 0.9rem;
        }

        .yb-gear-card .gear-desc {
            color: var(--yb-gray);
            font-size: 0.85rem;
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ============ GUARANTEE BAND ============ */
        .yb-guarantee {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .yb-guarantee-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 20px 18px;
            background: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: 8px;
            transition: all var(--yb-transition);
        }

        .yb-guarantee-item:hover {
            border-color: rgba(198, 255, 61, 0.3);
        }

        .yb-guarantee-item .guarantee-icon {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background: rgba(198, 255, 61, 0.1);
            color: var(--yb-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            flex-shrink: 0;
        }

        .yb-guarantee-item .guarantee-text h4 {
            font-size: 0.95rem;
            margin-bottom: 2px;
            color: var(--yb-white);
        }

        .yb-guarantee-item .guarantee-text p {
            font-size: 0.8rem;
            color: var(--yb-gray);
            margin-bottom: 0;
            line-height: 1.5;
        }

        /* ============ BRAND WALL ============ */
        .yb-brand-wall {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            justify-content: center;
            align-items: center;
            padding: 12px 0;
        }

        .yb-brand-wall .brand-logo {
            padding: 16px 24px;
            background: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: 8px;
            color: var(--yb-gray);
            font-weight: 700;
            font-size: 0.9rem;
            letter-spacing: 0.04em;
            transition: all var(--yb-transition);
            filter: grayscale(1);
            cursor: default;
            user-select: none;
        }

        .yb-brand-wall .brand-logo:hover {
            filter: grayscale(0.3);
            color: var(--yb-white);
            border-color: rgba(198, 255, 61, 0.3);
        }

        /* ============ FAQ ============ */
        .yb-faq-list .accordion-item {
            background: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: 8px;
            margin-bottom: 12px;
            overflow: hidden;
        }

        .yb-faq-list .accordion-item:last-child {
            margin-bottom: 0;
        }

        .yb-faq-list .accordion-button {
            background: var(--yb-charcoal);
            color: var(--yb-white);
            font-weight: 700;
            font-size: 0.95rem;
            padding: 18px 22px;
            border: none;
            box-shadow: none;
            transition: all var(--yb-transition);
        }

        .yb-faq-list .accordion-button:not(.collapsed) {
            background: var(--yb-charcoal-light);
            color: var(--yb-accent);
        }

        .yb-faq-list .accordion-button:focus {
            border: none;
            box-shadow: 0 0 0 2px rgba(198, 255, 61, 0.3);
        }

        .yb-faq-list .accordion-button::after {
            filter: brightness(0.8) invert(1);
        }

        .yb-faq-list .accordion-body {
            background: var(--yb-charcoal);
            color: var(--yb-gray);
            font-size: 0.9rem;
            line-height: 1.75;
            padding: 4px 22px 20px;
        }

        /* ============ SUBSCRIBE ============ */
        .yb-subscribe {
            background: var(--yb-charcoal-light);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            padding: 40px 36px;
            display: flex;
            align-items: center;
            gap: 32px;
            flex-wrap: wrap;
        }

        .yb-subscribe .subscribe-info {
            flex: 1;
            min-width: 260px;
        }

        .yb-subscribe .subscribe-info h3 {
            margin-bottom: 6px;
        }

        .yb-subscribe .subscribe-info p {
            color: var(--yb-gray);
            font-size: 0.9rem;
            margin-bottom: 0;
            line-height: 1.6;
        }

        .yb-subscribe .subscribe-form {
            display: flex;
            gap: 10px;
            flex: 1;
            min-width: 260px;
            max-width: 440px;
        }

        .yb-subscribe .subscribe-form input {
            flex: 1;
            background: var(--yb-black);
            border: 1px solid var(--yb-border);
            border-radius: 8px;
            color: var(--yb-white);
            padding: 10px 16px;
            font-size: 0.9rem;
            outline: none;
            transition: border-color var(--yb-transition);
        }

        .yb-subscribe .subscribe-form input::placeholder {
            color: var(--yb-gray-dark);
        }

        .yb-subscribe .subscribe-form input:focus {
            border-color: var(--yb-accent);
        }

        .yb-subscribe .subscribe-form .btn-submit {
            background: var(--yb-accent);
            color: var(--yb-black);
            border: none;
            border-radius: 8px;
            padding: 10px 24px;
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all var(--yb-transition);
            white-space: nowrap;
        }

        .yb-subscribe .subscribe-form .btn-submit:hover {
            background: var(--yb-accent-hover);
            box-shadow: 0 0 16px rgba(198, 255, 61, 0.4);
        }

        /* ============ FOOTER ============ */
        .yb-footer {
            background: var(--yb-black);
            border-top: 1px solid var(--yb-border);
            padding: 60px 0 40px;
            margin-bottom: var(--yb-bottom-cta-height);
        }

        .yb-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .yb-footer .footer-brand {
            font-size: 1.4rem;
            font-weight: 900;
            color: var(--yb-white);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .yb-footer .footer-brand .brand-dot {
            width: 10px;
            height: 10px;
            background: var(--yb-accent);
            border-radius: 50%;
            box-shadow: 0 0 12px rgba(198, 255, 61, 0.5);
        }

        .yb-footer .footer-desc {
            color: var(--yb-gray);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 340px;
        }

        .yb-footer .footer-col h5 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--yb-white);
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }

        .yb-footer .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .yb-footer .footer-col ul li {
            margin-bottom: 10px;
        }

        .yb-footer .footer-col ul li a {
            color: var(--yb-gray);
            font-size: 0.85rem;
            transition: color var(--yb-transition);
        }

        .yb-footer .footer-col ul li a:hover {
            color: var(--yb-accent);
        }

        .yb-footer .footer-bottom {
            border-top: 1px solid rgba(42, 48, 58, 0.6);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: var(--yb-gray);
        }

        .yb-footer .footer-bottom a {
            color: var(--yb-gray);
            text-decoration: none;
            transition: color var(--yb-transition);
        }

        .yb-footer .footer-bottom a:hover {
            color: var(--yb-accent);
        }

        .yb-footer .footer-bottom .footer-links {
            display: flex;
            gap: 16px;
            align-items: center;
        }

        /* ============ BOTTOM FIXED CTA ============ */
        .yb-bottom-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1025;
            background: rgba(14, 17, 22, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-top: 1px solid rgba(198, 255, 61, 0.25);
            box-shadow: 0 -8px 30px rgba(0, 0, 0, 0.6);
            min-height: var(--yb-bottom-cta-height);
            display: flex;
            align-items: center;
            padding: 10px 24px;
            transition: transform 300ms ease;
        }

        .yb-bottom-cta .cta-text {
            flex: 1;
            font-size: 0.95rem;
            color: var(--yb-white);
            font-weight: 600;
            letter-spacing: 0.02em;
            line-height: 1.4;
            padding-right: 16px;
        }

        .yb-bottom-cta .cta-text span {
            color: var(--yb-accent);
        }

        .yb-bottom-cta .btn-cta-main {
            background: var(--yb-accent);
            color: var(--yb-black);
            border: none;
            border-radius: 8px;
            padding: 10px 28px;
            font-weight: 800;
            font-size: 0.9rem;
            letter-spacing: 0.04em;
            white-space: nowrap;
            cursor: pointer;
            transition: all var(--yb-transition);
            box-shadow: 0 0 20px rgba(198, 255, 61, 0.35);
        }

        .yb-bottom-cta .btn-cta-main:hover {
            background: var(--yb-accent-hover);
            box-shadow: 0 0 32px rgba(198, 255, 61, 0.55);
            transform: translateY(-1px);
        }

        /* ============ MOBILE MENU ============ */
        .yb-mobile-menu {
            display: none;
            position: fixed;
            top: var(--yb-header-height);
            left: 0;
            right: 0;
            bottom: auto;
            max-height: calc(100vh - var(--yb-header-height));
            overflow-y: auto;
            background: rgba(14, 17, 22, 0.98);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--yb-border);
            z-index: 1029;
            padding: 20px 24px;
            flex-direction: column;
            gap: 8px;
        }

        .yb-mobile-menu.open {
            display: flex;
        }

        .yb-mobile-menu a {
            color: var(--yb-gray);
            font-weight: 600;
            font-size: 1.05rem;
            padding: 12px 0;
            border-bottom: 1px solid rgba(42, 48, 58, 0.5);
            transition: color var(--yb-transition);
        }

        .yb-mobile-menu a:hover,
        .yb-mobile-menu a.active {
            color: var(--yb-white);
        }

        .yb-mobile-menu .mobile-cta {
            display: flex;
            gap: 12px;
            margin-top: 12px;
            padding-top: 12px;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1199.98px) {
            .yb-selling-grid {
                gap: 20px;
            }
            .yb-selling-card {
                padding: 24px 20px;
            }
            .yb-team-grid {
                gap: 16px;
            }
            .yb-news-grid {
                gap: 16px;
            }
            .yb-gear-grid {
                gap: 16px;
            }
            .yb-guarantee {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 991.98px) {
            .yb-nav-links {
                display: none;
            }
            .navbar-toggler-yb {
                display: block;
            }
            .yb-nav-cta .btn {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .yb-selling-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .yb-selling-card:nth-child(2) {
                margin-top: 0;
            }
            .yb-selling-card:nth-child(3) {
                margin-top: 0;
            }
            .yb-data-band {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .yb-cat-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .yb-scene-showcase {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .yb-scene-visual img {
                height: 260px;
            }
            .yb-team-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .yb-news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .yb-gear-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .yb-proof-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .yb-compare-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .yb-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .yb-brand-intro {
                padding: 36px 28px;
            }
            .yb-bottom-cta {
                flex-direction: column;
                align-items: stretch;
                gap: 10px;
                padding: 12px 16px;
                min-height: auto;
            }
            .yb-bottom-cta .cta-text {
                padding-right: 0;
                text-align: center;
                font-size: 0.85rem;
            }
            .yb-bottom-cta .btn-cta-main {
                width: 100%;
                text-align: center;
            }
            .yb-footer {
                margin-bottom: 140px;
            }
            :root {
                --yb-bottom-cta-height: 110px;
            }
        }

        @media (max-width: 767.98px) {
            section {
                padding: 56px 0;
            }
            .section-lg {
                padding: 64px 0;
            }
            .yb-hero {
                min-height: auto;
                padding: 88px 0 56px;
            }
            .yb-hero h1 {
                font-size: 2.4rem;
            }
            .yb-hero .hero-subtitle {
                font-size: 0.95rem;
            }
            .yb-hero-actions {
                flex-direction: column;
                gap: 10px;
            }
            .yb-hero-actions .btn {
                width: 100%;
                text-align: center;
            }
            .yb-hero-stats {
                gap: 20px;
                flex-wrap: wrap;
                padding-top: 20px;
            }
            .yb-selling-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .yb-data-band {
                grid-template-columns: repeat(2, 1fr);
                padding: 24px 16px;
                gap: 16px;
            }
            .yb-data-item .data-num {
                font-size: 1.6rem;
            }
            .yb-cat-card .cat-img {
                height: 150px;
            }
            .yb-cat-card .cat-body {
                padding: 16px 18px;
            }
            .yb-team-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .yb-news-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .yb-gear-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .yb-proof-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .yb-guarantee {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .yb-brand-intro {
                padding: 24px 18px;
            }
            .yb-subscribe {
                flex-direction: column;
                text-align: center;
                padding: 28px 18px;
                gap: 20px;
            }
            .yb-subscribe .subscribe-form {
                flex-direction: column;
                max-width: 100%;
                width: 100%;
            }
            .yb-subscribe .subscribe-form .btn-submit {
                width: 100%;
            }
            .yb-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .yb-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .yb-footer .footer-bottom .footer-links {
                flex-wrap: wrap;
                justify-content: center;
            }
            .yb-search-bar {
                flex-wrap: wrap;
            }
            .yb-search-bar input {
                flex: 1;
                min-width: 120px;
            }
            .yb-nav-cta .btn {
                padding: 8px 10px;
                font-size: 0.75rem;
            }
            .yb-brand {
                font-size: 1.1rem;
            }
            .yb-navbar {
                padding: 0 16px;
            }
            .yb-event-timeline {
                padding-left: 20px;
                margin-left: 8px;
            }
            .yb-event-item::before {
                left: -27px;
                width: 8px;
                height: 8px;
            }
            .yb-event-item {
                padding-left: 16px;
            }
        }

        @media (max-width: 520px) {
            .yb-data-band {
                grid-template-columns: 1fr 1fr;
            }
            .yb-hero-stats {
                gap: 16px;
            }
            .yb-hero-stats .stat-num {
                font-size: 1.3rem;
            }
            .yb-hero h1 {
                font-size: 2rem;
            }
            .yb-navbar {
                min-height: 62px;
            }
            .yb-navbar .yb-nav-cta .btn-outline-yb {
                display: none;
            }
            .yb-navbar .yb-nav-cta .btn-primary-yb {
                padding: 8px 12px;
                font-size: 0.75rem;
            }
            .yb-brand {
                font-size: 1rem;
            }
            :root {
                --yb-header-height: 62px;
            }
            .yb-mobile-menu {
                top: 62px;
            }
        }

        @media (min-width: 992px) {
            .yb-mobile-menu {
                display: none !important;
            }
        }

/* roulang page: category1 */
:root {
            --yb-black: #0E1116;
            --yb-charcoal: #161B22;
            --yb-charcoal-light: #1C232C;
            --yb-white: #F4F6F8;
            --yb-gray: #9AA3AE;
            --yb-gray-dark: #5A6472;
            --yb-accent: #C6FF3D;
            --yb-accent-hover: #D6FF6E;
            --yb-cyan: #5EE6D0;
            --yb-alert: #E36B4A;
            --yb-border: #2A303A;
            --yb-radius-card: 12px;
            --yb-radius-btn: 8px;
            --yb-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
            --yb-shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.3);
            --yb-transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
            --yb-font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --yb-font-mono: 'Roboto Mono', 'SF Mono', 'DIN', 'Courier New', monospace;
            --yb-header-height: 72px;
            --yb-bottom-cta-height: 72px;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: calc(var(--yb-header-height) + 16px);
        }

        body {
            font-family: var(--yb-font-sans);
            background-color: var(--yb-black);
            color: var(--yb-white);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-bottom: 0;
            overflow-x: hidden;
        }

        a {
            color: var(--yb-accent);
            text-decoration: none;
            transition: color var(--yb-transition), border-color var(--yb-transition), background-color var(--yb-transition);
        }

        a:hover {
            color: var(--yb-accent-hover);
        }

        a:focus-visible {
            outline: 2px solid var(--yb-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        .container-wide {
            max-width: 1360px;
            padding-left: 20px;
            padding-right: 20px;
            margin: 0 auto;
        }

        section {
            padding: 80px 0;
            position: relative;
        }

        .section-sm {
            padding: 48px 0;
        }

        .section-lg {
            padding: 100px 0;
        }

        .section-divider {
            border-top: 1px solid var(--yb-border);
        }

        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--yb-cyan);
            margin-bottom: 8px;
            position: relative;
            padding-left: 16px;
        }

        .section-tag::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 6px;
            height: 6px;
            background: var(--yb-cyan);
            border-radius: 50%;
        }

        .section-title {
            margin-bottom: 12px;
        }

        .section-desc {
            color: var(--yb-gray);
            font-size: 1rem;
            max-width: 680px;
            margin-bottom: 2.5rem;
        }

        .text-accent {
            color: var(--yb-accent);
        }

        .text-cyan {
            color: var(--yb-cyan);
        }

        .text-gray {
            color: var(--yb-gray);
        }

        /* ============ NAVBAR ============ */
        .yb-navbar {
            background-color: rgba(14, 17, 22, 0.96);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--yb-border);
            min-height: var(--yb-header-height);
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: sticky;
            top: 0;
            z-index: 1030;
            transition: box-shadow var(--yb-transition);
        }

        .yb-navbar.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        .yb-brand {
            font-size: 1.35rem;
            font-weight: 900;
            color: var(--yb-white);
            letter-spacing: 0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .yb-brand .brand-dot {
            width: 10px;
            height: 10px;
            background: var(--yb-accent);
            border-radius: 50%;
            flex-shrink: 0;
            box-shadow: 0 0 12px rgba(198, 255, 61, 0.6);
        }

        .yb-brand:hover {
            color: var(--yb-white);
        }

        .yb-nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .yb-nav-links a {
            color: var(--yb-gray);
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            padding: 6px 0;
            transition: color var(--yb-transition);
        }

        .yb-nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--yb-accent);
            transition: width var(--yb-transition);
        }

        .yb-nav-links a:hover,
        .yb-nav-links a.active {
            color: var(--yb-white);
        }

        .yb-nav-links a:hover::after,
        .yb-nav-links a.active::after {
            width: 100%;
        }

        .yb-nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn {
            border-radius: var(--yb-radius-btn);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 10px 20px;
            transition: all var(--yb-transition);
        }

        .btn:focus-visible {
            outline: 2px solid var(--yb-accent);
            outline-offset: 2px;
            box-shadow: none;
        }

        .btn-secondary {
            background: transparent;
            border: 1px solid var(--yb-border);
            color: var(--yb-white);
        }

        .btn-secondary:hover,
        .btn-secondary:focus {
            background: rgba(255, 255, 255, 0.06);
            border-color: var(--yb-accent);
            color: var(--yb-accent);
        }

        .btn-primary {
            background: var(--yb-accent);
            border: 1px solid var(--yb-accent);
            color: var(--yb-black);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--yb-accent-hover);
            border-color: var(--yb-accent-hover);
            color: var(--yb-black);
            box-shadow: 0 0 16px rgba(198, 255, 61, 0.4);
        }

        .navbar-toggler {
            border: 1px solid var(--yb-border);
            color: var(--yb-white);
            padding: 6px 10px;
            border-radius: 6px;
            background: transparent;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 2px rgba(198, 255, 61, 0.4);
            outline: none;
        }

        .navbar-toggler .bi {
            font-size: 1.4rem;
            color: var(--yb-white);
        }

        /* ============ CATEGORY BANNER ============ */
        .yb-cat-banner {
            padding: 56px 0 40px;
            background: linear-gradient(180deg, rgba(28, 35, 44, 0.9) 0%, rgba(14, 17, 22, 0.98) 100%);
            border-bottom: 1px solid var(--yb-border);
            position: relative;
            overflow: hidden;
        }

        .yb-cat-banner::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(198, 255, 61, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .yb-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--yb-gray);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .yb-breadcrumb a {
            color: var(--yb-gray);
        }

        .yb-breadcrumb a:hover {
            color: var(--yb-accent);
        }

        .yb-breadcrumb .separator {
            color: var(--yb-gray-dark);
            user-select: none;
        }

        .yb-breadcrumb .current {
            color: var(--yb-accent);
        }

        .yb-cat-banner h1 {
            font-size: 2.5rem;
            font-weight: 900;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .yb-cat-banner .cat-desc {
            font-size: 1.05rem;
            color: var(--yb-gray);
            max-width: 720px;
            margin-bottom: 0;
        }

        /* ============ FILTER BAR ============ */
        .yb-filter-bar {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            padding: 16px 0;
            border-bottom: 1px solid var(--yb-border);
            margin-bottom: 32px;
        }

        .yb-filter-label {
            font-size: 0.85rem;
            color: var(--yb-gray);
            font-weight: 600;
            white-space: nowrap;
        }

        .yb-filter-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .yb-filter-tag {
            padding: 6px 16px;
            border-radius: 20px;
            border: 1px solid var(--yb-border);
            background: transparent;
            color: var(--yb-gray);
            font-size: 0.82rem;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--yb-transition);
            white-space: nowrap;
        }

        .yb-filter-tag:hover {
            border-color: var(--yb-accent);
            color: var(--yb-accent);
        }

        .yb-filter-tag.active {
            background: var(--yb-accent);
            border-color: var(--yb-accent);
            color: var(--yb-black);
        }

        .yb-filter-sort {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .yb-filter-sort select {
            background: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            color: var(--yb-white);
            padding: 8px 12px;
            border-radius: 6px;
            font-size: 0.85rem;
            cursor: pointer;
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%239AA3AE' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            padding-right: 32px;
        }

        .yb-filter-sort select:focus {
            outline: none;
            border-color: var(--yb-accent);
        }

        /* ============ TIMELINE ============ */
        .yb-timeline {
            position: relative;
            padding-left: 28px;
        }

        .yb-timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: var(--yb-border);
            border-radius: 1px;
        }

        .yb-timeline-item {
            position: relative;
            margin-bottom: 32px;
            padding-left: 20px;
        }

        .yb-timeline-item:last-child {
            margin-bottom: 0;
        }

        .yb-timeline-item::before {
            content: '';
            position: absolute;
            left: -24px;
            top: 6px;
            width: 12px;
            height: 12px;
            background: var(--yb-accent);
            border-radius: 50%;
            box-shadow: 0 0 12px rgba(198, 255, 61, 0.5);
            z-index: 1;
        }

        .yb-timeline-item.completed::before {
            background: var(--yb-cyan);
            box-shadow: 0 0 12px rgba(94, 230, 208, 0.5);
        }

        .yb-timeline-date {
            font-family: var(--yb-font-mono);
            font-size: 0.85rem;
            color: var(--yb-cyan);
            font-weight: 600;
            letter-spacing: 0.05em;
            margin-bottom: 6px;
        }

        .yb-timeline-card {
            background: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            padding: 20px 24px;
            display: flex;
            align-items: center;
            gap: 20px;
            transition: all var(--yb-transition);
            position: relative;
        }

        .yb-timeline-card:hover {
            border-color: var(--yb-accent);
            box-shadow: var(--yb-shadow-sm);
            transform: translateY(-2px);
        }

        .yb-timeline-thumb {
            width: 72px;
            height: 72px;
            border-radius: 8px;
            overflow: hidden;
            flex-shrink: 0;
            background: var(--yb-charcoal-light);
        }

        .yb-timeline-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .yb-timeline-content {
            flex: 1;
            min-width: 0;
        }

        .yb-timeline-content h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--yb-white);
        }

        .yb-timeline-content p {
            font-size: 0.88rem;
            color: var(--yb-gray);
            margin: 0;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .yb-timeline-status {
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 12px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .yb-timeline-status.upcoming {
            background: rgba(198, 255, 61, 0.12);
            color: var(--yb-accent);
            border: 1px solid rgba(198, 255, 61, 0.3);
        }

        .yb-timeline-status.live {
            background: rgba(94, 230, 208, 0.12);
            color: var(--yb-cyan);
            border: 1px solid rgba(94, 230, 208, 0.3);
        }

        .yb-timeline-status.finished {
            background: rgba(154, 163, 174, 0.12);
            color: var(--yb-gray);
            border: 1px solid var(--yb-border);
        }

        /* ============ FEATURED CARDS ============ */
        .yb-featured-card {
            background: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            overflow: hidden;
            transition: all var(--yb-transition);
            height: 100%;
        }

        .yb-featured-card:hover {
            border-color: var(--yb-accent);
            box-shadow: var(--yb-shadow-sm);
            transform: translateY(-4px);
        }

        .yb-featured-card .card-img-wrap {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--yb-charcoal-light);
            position: relative;
        }

        .yb-featured-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 300ms cubic-bezier(0.4, 0, 0.2, 1);
        }

        .yb-featured-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }

        .yb-featured-card .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(14, 17, 22, 0.85);
            color: var(--yb-accent);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 12px;
            border: 1px solid rgba(198, 255, 61, 0.4);
        }

        .yb-featured-card .card-body {
            padding: 20px;
        }

        .yb-featured-card .card-title {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--yb-white);
        }

        .yb-featured-card .card-text {
            font-size: 0.85rem;
            color: var(--yb-gray);
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .yb-featured-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.75rem;
            color: var(--yb-gray-dark);
        }

        /* ============ DATA STRIP ============ */
        .yb-data-strip {
            background: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            padding: 32px 28px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .yb-data-item {
            text-align: center;
        }

        .yb-data-item .data-number {
            font-family: var(--yb-font-mono);
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--yb-accent);
            letter-spacing: -0.02em;
            margin-bottom: 4px;
        }

        .yb-data-item .data-label {
            font-size: 0.85rem;
            color: var(--yb-gray);
            font-weight: 500;
        }

        /* ============ SUBSCRIBE CTA ============ */
        .yb-subscribe-cta {
            background: linear-gradient(135deg, var(--yb-charcoal-light) 0%, var(--yb-charcoal) 100%);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            padding: 40px 36px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .yb-subscribe-cta::before {
            content: '';
            position: absolute;
            top: -40px;
            left: 50%;
            transform: translateX(-50%);
            width: 400px;
            height: 200px;
            background: radial-gradient(ellipse, rgba(198, 255, 61, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }

        .yb-subscribe-cta h2 {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 8px;
            position: relative;
        }

        .yb-subscribe-cta p {
            color: var(--yb-gray);
            font-size: 0.95rem;
            margin-bottom: 20px;
            position: relative;
        }

        .yb-subscribe-form {
            display: flex;
            gap: 10px;
            max-width: 480px;
            margin: 0 auto;
            position: relative;
        }

        .yb-subscribe-form input[type="email"] {
            flex: 1;
            background: var(--yb-black);
            border: 1px solid var(--yb-border);
            color: var(--yb-white);
            padding: 12px 16px;
            border-radius: var(--yb-radius-btn);
            font-size: 0.9rem;
            transition: border-color var(--yb-transition);
        }

        .yb-subscribe-form input[type="email"]:focus {
            outline: none;
            border-color: var(--yb-accent);
            box-shadow: 0 0 0 3px rgba(198, 255, 61, 0.1);
        }

        .yb-subscribe-form input[type="email"]::placeholder {
            color: var(--yb-gray-dark);
        }

        /* ============ TAGS ============ */
        .yb-tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .yb-tag-chip {
            display: inline-block;
            padding: 8px 18px;
            border-radius: 20px;
            border: 1px solid var(--yb-border);
            color: var(--yb-gray);
            font-size: 0.82rem;
            font-weight: 500;
            transition: all var(--yb-transition);
            background: transparent;
        }

        .yb-tag-chip:hover {
            border-color: var(--yb-accent);
            color: var(--yb-accent);
            background: rgba(198, 255, 61, 0.05);
        }

        /* ============ FAQ ============ */
        .yb-faq-item {
            background: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--yb-transition);
        }

        .yb-faq-item:hover {
            border-color: rgba(198, 255, 61, 0.3);
        }

        .yb-faq-item .faq-question {
            padding: 18px 24px;
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--yb-white);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            user-select: none;
        }

        .yb-faq-item .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--yb-border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: var(--yb-accent);
            transition: all var(--yb-transition);
        }

        .yb-faq-item .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.88rem;
            color: var(--yb-gray);
            line-height: 1.8;
        }

        .yb-faq-item.open .faq-icon {
            background: var(--yb-accent);
            color: var(--yb-black);
            border-color: var(--yb-accent);
        }

        /* ============ PAGINATION ============ */
        .yb-pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            flex-wrap: wrap;
            padding-top: 16px;
        }

        .yb-pagination .page-link {
            background: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            color: var(--yb-gray);
            border-radius: 6px;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--yb-transition);
            text-decoration: none;
        }

        .yb-pagination .page-link:hover {
            border-color: var(--yb-accent);
            color: var(--yb-accent);
        }

        .yb-pagination .page-link.active {
            background: var(--yb-accent);
            border-color: var(--yb-accent);
            color: var(--yb-black);
            font-weight: 700;
        }

        .yb-pagination .page-link.disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        /* ============ FOOTER ============ */
        .yb-footer {
            background: var(--yb-charcoal);
            border-top: 1px solid var(--yb-border);
            padding: 48px 0 28px;
            margin-top: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand {
            font-size: 1.2rem;
            font-weight: 900;
            color: var(--yb-white);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }

        .footer-brand .brand-dot {
            width: 8px;
            height: 8px;
            background: var(--yb-accent);
            border-radius: 50%;
            box-shadow: 0 0 8px rgba(198, 255, 61, 0.5);
        }

        .footer-desc {
            font-size: 0.85rem;
            color: var(--yb-gray);
            margin-bottom: 0;
            max-width: 280px;
        }

        .footer-col h5 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--yb-white);
            margin-bottom: 16px;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 0.85rem;
            color: var(--yb-gray);
            transition: color var(--yb-transition);
        }

        .footer-col ul li a:hover {
            color: var(--yb-accent);
        }

        .footer-bottom {
            border-top: 1px solid var(--yb-border);
            padding-top: 20px;
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 0.8rem;
            color: var(--yb-gray-dark);
        }

        .footer-links {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-left: auto;
        }

        .footer-links a {
            color: var(--yb-gray);
            font-size: 0.8rem;
        }

        .footer-links a:hover {
            color: var(--yb-accent);
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            section {
                padding: 60px 0;
            }
            .section-lg {
                padding: 72px 0;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .yb-data-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 768px) {
            body {
                font-size: 15px;
            }
            :root {
                --yb-header-height: 56px;
            }
            .yb-navbar {
                padding: 0 16px;
                flex-wrap: wrap;
                min-height: 56px;
            }
            .yb-brand {
                font-size: 1.15rem;
            }
            .yb-nav-links {
                gap: 16px;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                padding: 8px 0;
                flex-wrap: nowrap;
                width: 100%;
                order: 3;
            }
            .yb-nav-links a {
                font-size: 0.82rem;
                white-space: nowrap;
            }
            .yb-nav-cta {
                gap: 8px;
            }
            .yb-nav-cta .btn {
                padding: 6px 12px;
                font-size: 0.78rem;
            }
            .navbar-toggler {
                display: none;
            }
            .yb-cat-banner {
                padding: 36px 0 28px;
            }
            .yb-cat-banner h1 {
                font-size: 1.8rem;
            }
            .yb-timeline-card {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 16px;
            }
            .yb-timeline-thumb {
                width: 100%;
                aspect-ratio: 16/9;
                height: auto;
            }
            .yb-timeline-content p {
                white-space: normal;
                -webkit-line-clamp: 2;
                display: -webkit-box;
                -webkit-box-orient: vertical;
            }
            .yb-timeline-status {
                align-self: flex-start;
            }
            .yb-data-strip {
                grid-template-columns: 1fr 1fr;
                padding: 24px 16px;
            }
            .yb-data-item .data-number {
                font-size: 1.6rem;
            }
            .yb-subscribe-form {
                flex-direction: column;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .footer-links {
                margin-left: 0;
            }
            .yb-filter-bar {
                align-items: flex-start;
            }
            .yb-filter-sort {
                margin-left: 0;
                width: 100%;
            }
            .yb-filter-sort select {
                width: 100%;
            }
        }

        @media (max-width: 520px) {
            section {
                padding: 40px 0;
            }
            .yb-nav-cta .btn-secondary {
                display: none;
            }
            .yb-nav-cta .btn-primary {
                padding: 6px 14px;
                font-size: 0.75rem;
            }
            .yb-brand {
                font-size: 1rem;
            }
            .yb-cat-banner h1 {
                font-size: 1.5rem;
            }
            .yb-cat-banner .cat-desc {
                font-size: 0.9rem;
            }
            .yb-timeline {
                padding-left: 20px;
            }
            .yb-timeline::before {
                left: 4px;
            }
            .yb-timeline-item {
                padding-left: 14px;
            }
            .yb-timeline-item::before {
                left: -17px;
                width: 8px;
                height: 8px;
            }
            .yb-timeline-content h3 {
                font-size: 0.95rem;
            }
            .yb-data-strip {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
                padding: 20px 12px;
            }
            .yb-data-item .data-number {
                font-size: 1.3rem;
            }
            .yb-pagination .page-link {
                width: 34px;
                height: 34px;
                font-size: 0.8rem;
            }
        }

/* roulang page: category2 */
:root {
            --yb-black: #0E1116;
            --yb-charcoal: #161B22;
            --yb-charcoal-light: #1C232C;
            --yb-white: #F4F6F8;
            --yb-gray: #9AA3AE;
            --yb-gray-dark: #5A6472;
            --yb-accent: #C6FF3D;
            --yb-accent-hover: #D6FF6E;
            --yb-cyan: #5EE6D0;
            --yb-alert: #E36B4A;
            --yb-border: #2A303A;
            --yb-radius-card: 12px;
            --yb-radius-btn: 8px;
            --yb-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
            --yb-shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.3);
            --yb-transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
            --yb-font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --yb-font-mono: 'Roboto Mono', 'SF Mono', 'DIN', 'Courier New', monospace;
            --yb-header-height: 72px;
            --yb-bottom-cta-height: 72px;
        }
        html {
            scroll-behavior: smooth;
            scroll-padding-top: calc(var(--yb-header-height) + 16px);
        }
        body {
            font-family: var(--yb-font-sans);
            background-color: var(--yb-black);
            color: var(--yb-white);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-bottom: 0;
            overflow-x: hidden;
        }
        a {
            color: var(--yb-accent);
            text-decoration: none;
            transition: color var(--yb-transition), border-color var(--yb-transition), background-color var(--yb-transition);
        }
        a:hover {
            color: var(--yb-accent-hover);
        }
        a:focus-visible {
            outline: 2px solid var(--yb-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }
        .container-wide {
            max-width: 1360px;
            padding-left: 20px;
            padding-right: 20px;
            margin: 0 auto;
        }
        section {
            padding: 64px 0;
            position: relative;
        }
        .section-sm {
            padding: 40px 0;
        }
        .section-divider {
            border-top: 1px solid var(--yb-border);
        }
        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--yb-cyan);
            margin-bottom: 8px;
            position: relative;
            padding-left: 16px;
        }
        .section-tag::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 6px;
            height: 6px;
            background: var(--yb-cyan);
            border-radius: 50%;
        }
        .section-title {
            margin-bottom: 12px;
            font-weight: 800;
            letter-spacing: 0.01em;
        }
        .section-desc {
            color: var(--yb-gray);
            font-size: 1rem;
            max-width: 680px;
            margin-bottom: 2rem;
        }
        .text-accent {
            color: var(--yb-accent);
        }
        .text-cyan {
            color: var(--yb-cyan);
        }
        .text-gray {
            color: var(--yb-gray);
        }

        /* ============ NAVBAR ============ */
        .yb-navbar {
            background-color: rgba(14, 17, 22, 0.97);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--yb-border);
            min-height: var(--yb-header-height);
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: sticky;
            top: 0;
            z-index: 1030;
            transition: box-shadow var(--yb-transition);
        }
        .yb-navbar.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }
        .yb-brand {
            font-size: 1.3rem;
            font-weight: 900;
            color: var(--yb-white);
            letter-spacing: 0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .yb-brand .brand-dot {
            width: 10px;
            height: 10px;
            background: var(--yb-accent);
            border-radius: 50%;
            flex-shrink: 0;
            box-shadow: 0 0 12px rgba(198, 255, 61, 0.6);
        }
        .yb-brand:hover {
            color: var(--yb-white);
        }
        .yb-nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .yb-nav-links a {
            color: var(--yb-gray);
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            padding: 6px 0;
            transition: color var(--yb-transition);
        }
        .yb-nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--yb-accent);
            transition: width var(--yb-transition);
        }
        .yb-nav-links a:hover,
        .yb-nav-links a.active {
            color: var(--yb-white);
        }
        .yb-nav-links a:hover::after,
        .yb-nav-links a.active::after {
            width: 100%;
        }
        .yb-nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .btn {
            border-radius: var(--yb-radius-btn);
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: all var(--yb-transition);
            padding: 8px 18px;
            font-size: 0.9rem;
            border: none;
        }
        .btn:focus-visible {
            outline: 2px solid var(--yb-accent);
            outline-offset: 2px;
        }
        .btn-outline-light-custom {
            background: transparent;
            border: 1px solid var(--yb-border);
            color: var(--yb-white);
        }
        .btn-outline-light-custom:hover {
            border-color: var(--yb-accent);
            color: var(--yb-accent);
            background: rgba(198, 255, 61, 0.06);
        }
        .btn-accent {
            background: var(--yb-accent);
            color: var(--yb-black);
            font-weight: 700;
            box-shadow: 0 4px 16px rgba(198, 255, 61, 0.25);
        }
        .btn-accent:hover {
            background: var(--yb-accent-hover);
            color: var(--yb-black);
            box-shadow: 0 6px 24px rgba(198, 255, 61, 0.4);
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 6px 14px;
            font-size: 0.82rem;
        }
        .navbar-toggler {
            border: 1px solid var(--yb-border);
            color: var(--yb-white);
            padding: 8px 10px;
            border-radius: 6px;
            background: transparent;
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: none;
        }
        .navbar-toggler .bi {
            font-size: 1.5rem;
            color: var(--yb-white);
        }

        /* ============ BREADCRUMB ============ */
        .yb-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--yb-gray);
            margin-bottom: 14px;
            flex-wrap: wrap;
        }
        .yb-breadcrumb a {
            color: var(--yb-gray);
        }
        .yb-breadcrumb a:hover {
            color: var(--yb-accent);
        }
        .yb-breadcrumb .separator {
            color: var(--yb-gray-dark);
            font-size: 0.75rem;
        }
        .yb-breadcrumb .current {
            color: var(--yb-white);
            font-weight: 600;
        }

        /* ============ CATEGORY BANNER ============ */
        .yb-category-banner {
            padding: 44px 0 36px;
            background: linear-gradient(180deg, var(--yb-charcoal) 0%, var(--yb-black) 100%);
            border-bottom: 1px solid var(--yb-border);
            position: relative;
            overflow: hidden;
        }
        .yb-category-banner::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(198, 255, 61, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        .yb-category-banner h1 {
            font-size: 2.2rem;
            font-weight: 900;
            letter-spacing: 0.01em;
            margin-bottom: 10px;
        }
        .yb-category-banner p {
            color: var(--yb-gray);
            max-width: 720px;
            margin-bottom: 0;
            font-size: 1rem;
        }

        /* ============ FILTER BAR ============ */
        .yb-filter-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 14px;
            background: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            padding: 14px 18px;
            margin-bottom: 32px;
        }
        .yb-filter-tags {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .yb-filter-tag {
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--yb-gray);
            border: 1px solid var(--yb-border);
            background: transparent;
            cursor: pointer;
            transition: all var(--yb-transition);
            white-space: nowrap;
        }
        .yb-filter-tag:hover {
            border-color: var(--yb-accent);
            color: var(--yb-white);
        }
        .yb-filter-tag.active {
            background: var(--yb-accent);
            color: var(--yb-black);
            border-color: var(--yb-accent);
            font-weight: 700;
        }
        .yb-filter-sort {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--yb-gray);
            font-size: 0.82rem;
        }
        .yb-filter-sort select {
            background: var(--yb-black);
            border: 1px solid var(--yb-border);
            color: var(--yb-white);
            border-radius: 6px;
            padding: 6px 10px;
            font-size: 0.85rem;
            outline: none;
            cursor: pointer;
        }
        .yb-filter-sort select:focus {
            border-color: var(--yb-accent);
        }

        /* ============ PLAYER CARDS ============ */
        .yb-player-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .yb-player-card {
            background: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            overflow: hidden;
            transition: all var(--yb-transition);
            position: relative;
        }
        .yb-player-card:hover {
            transform: translateY(-4px);
            border-color: var(--yb-accent);
            box-shadow: var(--yb-shadow);
        }
        .yb-player-card .player-img-wrapper {
            position: relative;
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background: var(--yb-charcoal-light);
        }
        .yb-player-card .player-img-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--yb-transition);
        }
        .yb-player-card:hover .player-img-wrapper img {
            transform: scale(1.04);
        }
        .yb-player-card .player-badge {
            position: absolute;
            top: 10px;
            left: 10px;
            background: var(--yb-accent);
            color: var(--yb-black);
            font-size: 0.7rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 14px;
            letter-spacing: 0.04em;
        }
        .yb-player-card .player-info {
            padding: 18px 20px 20px;
        }
        .yb-player-card .player-name {
            font-size: 1.15rem;
            font-weight: 800;
            margin-bottom: 2px;
            color: var(--yb-white);
        }
        .yb-player-card .player-team {
            font-size: 0.85rem;
            color: var(--yb-cyan);
            margin-bottom: 12px;
            font-weight: 500;
        }
        .yb-player-card .player-stats {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 14px;
        }
        .yb-player-card .player-stat {
            font-size: 0.82rem;
            color: var(--yb-gray);
        }
        .yb-player-card .player-stat strong {
            display: block;
            font-family: var(--yb-font-mono);
            font-size: 1.05rem;
            color: var(--yb-white);
            font-weight: 700;
            margin-top: 2px;
        }
        .yb-player-card .btn-sm {
            width: 100%;
            text-align: center;
            background: transparent;
            border: 1px solid var(--yb-border);
            color: var(--yb-gray);
            border-radius: 6px;
            padding: 8px 0;
            font-size: 0.82rem;
            transition: all var(--yb-transition);
        }
        .yb-player-card .btn-sm:hover {
            border-color: var(--yb-accent);
            color: var(--yb-accent);
            background: rgba(198, 255, 61, 0.05);
        }

        /* ============ TEAM CARDS ============ */
        .yb-team-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .yb-team-card {
            background: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            padding: 20px;
            transition: all var(--yb-transition);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .yb-team-card:hover {
            transform: translateY(-4px);
            border-color: var(--yb-accent);
            box-shadow: var(--yb-shadow);
        }
        .yb-team-card .team-header {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .yb-team-card .team-logo {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--yb-charcoal-light);
            border: 2px solid var(--yb-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-family: var(--yb-font-mono);
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--yb-accent);
        }
        .yb-team-card .team-name {
            font-size: 1.05rem;
            font-weight: 800;
            color: var(--yb-white);
        }
        .yb-team-card .team-members {
            font-size: 0.8rem;
            color: var(--yb-gray);
        }
        .yb-team-card .team-detail {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px;
            font-size: 0.82rem;
            color: var(--yb-gray);
            padding-top: 12px;
            border-top: 1px solid var(--yb-border);
        }
        .yb-team-card .team-detail strong {
            display: block;
            color: var(--yb-white);
            font-weight: 700;
            margin-top: 2px;
        }

        /* ============ DATA STRIP ============ */
        .yb-data-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .yb-data-item {
            background: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            padding: 20px 16px;
            text-align: center;
            transition: all var(--yb-transition);
        }
        .yb-data-item:hover {
            border-color: var(--yb-accent);
            transform: translateY(-2px);
        }
        .yb-data-item .data-number {
            font-family: var(--yb-font-mono);
            font-size: 2rem;
            font-weight: 700;
            color: var(--yb-accent);
            line-height: 1.2;
        }
        .yb-data-item .data-label {
            font-size: 0.8rem;
            color: var(--yb-gray);
            margin-top: 6px;
            letter-spacing: 0.03em;
        }

        /* ============ CTA BLOCK ============ */
        .yb-cta-block {
            background: linear-gradient(135deg, var(--yb-charcoal) 0%, var(--yb-charcoal-light) 100%);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            padding: 36px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
            position: relative;
            overflow: hidden;
        }
        .yb-cta-block::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(198, 255, 61, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }
        .yb-cta-block h3 {
            font-size: 1.4rem;
            font-weight: 800;
            margin-bottom: 6px;
            position: relative;
            z-index: 1;
        }
        .yb-cta-block p {
            color: var(--yb-gray);
            margin-bottom: 0;
            font-size: 0.92rem;
            position: relative;
            z-index: 1;
        }

        /* ============ TAGS ============ */
        .yb-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .yb-tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--yb-gray);
            border: 1px solid var(--yb-border);
            background: var(--yb-charcoal);
            transition: all var(--yb-transition);
        }
        .yb-tag:hover {
            border-color: var(--yb-accent);
            color: var(--yb-accent);
            background: rgba(198, 255, 61, 0.05);
        }

        /* ============ PAGINATION ============ */
        .yb-pagination {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 32px;
            flex-wrap: wrap;
        }
        .yb-pagination .page-link {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            background: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            color: var(--yb-gray);
            font-size: 0.85rem;
            font-weight: 500;
            transition: all var(--yb-transition);
            cursor: pointer;
            text-decoration: none;
        }
        .yb-pagination .page-link:hover {
            border-color: var(--yb-accent);
            color: var(--yb-white);
        }
        .yb-pagination .page-link.active {
            background: var(--yb-accent);
            color: var(--yb-black);
            border-color: var(--yb-accent);
            font-weight: 700;
        }
        .yb-pagination .page-link.disabled {
            opacity: 0.4;
            pointer-events: none;
            cursor: not-allowed;
        }

        /* ============ FAQ ============ */
        .yb-accordion-item {
            background: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            margin-bottom: 12px;
            overflow: hidden;
        }
        .yb-accordion-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            cursor: pointer;
            transition: all var(--yb-transition);
            gap: 14px;
            user-select: none;
        }
        .yb-accordion-header:hover {
            background: var(--yb-charcoal-light);
        }
        .yb-accordion-header .faq-question {
            font-size: 0.98rem;
            font-weight: 700;
            color: var(--yb-white);
            margin: 0;
        }
        .yb-accordion-header .faq-icon {
            color: var(--yb-accent);
            font-size: 1.2rem;
            transition: transform var(--yb-transition);
            flex-shrink: 0;
        }
        .yb-accordion-item.open .faq-icon {
            transform: rotate(180deg);
        }
        .yb-accordion-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.25s ease;
            padding: 0 22px;
            color: var(--yb-gray);
            font-size: 0.9rem;
            line-height: 1.7;
        }
        .yb-accordion-item.open .yb-accordion-body {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        /* ============ FOOTER ============ */
        .yb-footer {
            background: var(--yb-charcoal);
            border-top: 1px solid var(--yb-border);
            padding: 48px 0 20px;
            margin-top: 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-size: 1.2rem;
            font-weight: 900;
            color: var(--yb-white);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 10px;
        }
        .footer-brand .brand-dot {
            width: 8px;
            height: 8px;
            background: var(--yb-accent);
            border-radius: 50%;
        }
        .footer-desc {
            color: var(--yb-gray);
            font-size: 0.85rem;
            max-width: 300px;
            margin-bottom: 0;
            line-height: 1.6;
        }
        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--yb-white);
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: var(--yb-gray);
            font-size: 0.85rem;
            transition: color var(--yb-transition);
        }
        .footer-col ul li a:hover {
            color: var(--yb-accent);
        }
        .footer-bottom {
            border-top: 1px solid var(--yb-border);
            padding-top: 16px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            font-size: 0.78rem;
            color: var(--yb-gray);
        }
        .footer-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-links a {
            color: var(--yb-gray);
            font-size: 0.78rem;
        }
        .footer-links a:hover {
            color: var(--yb-accent);
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1199px) {
            .yb-player-grid,
            .yb-team-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .yb-data-strip {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 991px) {
            .yb-nav-links {
                gap: 18px;
            }
            .yb-nav-links a {
                font-size: 0.88rem;
            }
            .yb-nav-cta .btn {
                padding: 6px 12px;
                font-size: 0.8rem;
            }
            .yb-brand {
                font-size: 1.15rem;
            }
            .btn-outline-light-custom {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 767px) {
            .yb-navbar {
                padding: 0 16px;
                flex-wrap: wrap;
                min-height: auto;
                padding-top: 10px;
                padding-bottom: 10px;
            }
            .yb-nav-cta {
                margin-left: auto;
            }
            .yb-nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                gap: 0;
                padding: 12px 0 4px;
                order: 3;
            }
            .yb-nav-links.show {
                display: flex;
            }
            .yb-nav-links li {
                width: 100%;
                border-bottom: 1px solid var(--yb-border);
            }
            .yb-nav-links li:last-child {
                border-bottom: none;
            }
            .yb-nav-links a {
                display: block;
                padding: 12px 0;
                font-size: 0.95rem;
            }
            .navbar-toggler {
                display: block;
            }
            .yb-player-grid,
            .yb-team-grid {
                grid-template-columns: 1fr;
            }
            .yb-data-strip {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .yb-category-banner h1 {
                font-size: 1.6rem;
            }
            .yb-category-banner {
                padding: 28px 0 24px;
            }
            .yb-cta-block {
                padding: 24px 20px;
                flex-direction: column;
                text-align: center;
            }
            .yb-cta-block h3 {
                font-size: 1.2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }
            .yb-filter-bar {
                flex-direction: column;
                align-items: flex-start;
            }
            .yb-filter-sort {
                width: 100%;
                justify-content: space-between;
            }
            .yb-filter-sort select {
                flex: 1;
            }
        }
        @media (max-width: 520px) {
            .yb-data-strip {
                grid-template-columns: 1fr;
            }
            .yb-player-card .player-info {
                padding: 14px 16px 16px;
            }
            .yb-team-card {
                padding: 16px;
            }
            section {
                padding: 40px 0;
            }
            .yb-category-banner h1 {
                font-size: 1.4rem;
            }
        }

/* roulang page: category3 */
/* ============ 设计系统 ============ */
        :root {
            --yb-black: #0E1116;
            --yb-charcoal: #161B22;
            --yb-charcoal-light: #1C232C;
            --yb-white: #F4F6F8;
            --yb-gray: #9AA3AE;
            --yb-gray-dark: #5A6472;
            --yb-accent: #C6FF3D;
            --yb-accent-hover: #D6FF6E;
            --yb-cyan: #5EE6D0;
            --yb-alert: #E36B4A;
            --yb-border: #2A303A;
            --yb-radius-card: 12px;
            --yb-radius-btn: 8px;
            --yb-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
            --yb-shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.3);
            --yb-transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
            --yb-font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --yb-font-mono: 'Roboto Mono', 'SF Mono', 'DIN', 'Courier New', monospace;
            --yb-header-height: 72px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: calc(var(--yb-header-height) + 16px);
        }

        body {
            font-family: var(--yb-font-sans);
            background-color: var(--yb-black);
            color: var(--yb-white);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-bottom: 0;
        }

        a {
            color: var(--yb-accent);
            text-decoration: none;
            transition: color var(--yb-transition), border-color var(--yb-transition), background-color var(--yb-transition);
        }
        a:hover {
            color: var(--yb-accent-hover);
        }
        a:focus-visible {
            outline: 2px solid var(--yb-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        section {
            padding: 72px 0;
            position: relative;
        }
        .section-sm {
            padding: 48px 0;
        }
        .section-divider {
            border-top: 1px solid var(--yb-border);
        }

        .section-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--yb-cyan);
            margin-bottom: 8px;
            position: relative;
            padding-left: 16px;
        }
        .section-tag::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 6px;
            height: 6px;
            background: var(--yb-cyan);
            border-radius: 50%;
        }

        .section-title {
            font-size: 1.75rem;
            font-weight: 800;
            letter-spacing: -0.01em;
            margin-bottom: 10px;
            color: var(--yb-white);
        }
        .section-desc {
            color: var(--yb-gray);
            font-size: 0.95rem;
            max-width: 680px;
            margin-bottom: 2.25rem;
            line-height: 1.75;
        }

        .text-accent { color: var(--yb-accent); }
        .text-cyan { color: var(--yb-cyan); }
        .text-gray { color: var(--yb-gray); }

        /* ============ 导航 ============ */
        .yb-navbar {
            background-color: rgba(14, 17, 22, 0.97);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--yb-border);
            min-height: var(--yb-header-height);
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: sticky;
            top: 0;
            z-index: 1030;
            transition: box-shadow var(--yb-transition);
        }
        .yb-navbar.scrolled {
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.55);
        }
        .yb-brand {
            font-size: 1.3rem;
            font-weight: 900;
            color: var(--yb-white);
            letter-spacing: 0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .yb-brand .brand-dot {
            width: 10px;
            height: 10px;
            background: var(--yb-accent);
            border-radius: 50%;
            flex-shrink: 0;
            box-shadow: 0 0 12px rgba(198, 255, 61, 0.6);
        }
        .yb-brand:hover { color: var(--yb-white); }
        .yb-nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .yb-nav-links a {
            color: var(--yb-gray);
            font-weight: 500;
            font-size: 0.92rem;
            position: relative;
            padding: 6px 0;
            transition: color var(--yb-transition);
            white-space: nowrap;
        }
        .yb-nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--yb-accent);
            transition: width var(--yb-transition);
        }
        .yb-nav-links a:hover,
        .yb-nav-links a.active {
            color: var(--yb-white);
        }
        .yb-nav-links a:hover::after,
        .yb-nav-links a.active::after {
            width: 100%;
        }
        .yb-nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        /* 按钮系统 */
        .btn {
            border-radius: var(--yb-radius-btn);
            font-weight: 600;
            font-size: 0.88rem;
            padding: 10px 20px;
            transition: all var(--yb-transition);
            border: none;
            letter-spacing: 0.01em;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            white-space: nowrap;
        }
        .btn:focus-visible {
            outline: 2px solid var(--yb-accent);
            outline-offset: 2px;
        }
        .btn-primary-yb {
            background-color: var(--yb-accent);
            color: var(--yb-black);
            font-weight: 700;
        }
        .btn-primary-yb:hover {
            background-color: var(--yb-accent-hover);
            color: var(--yb-black);
            box-shadow: 0 0 20px rgba(198, 255, 61, 0.35);
        }
        .btn-secondary-yb {
            background-color: transparent;
            color: var(--yb-white);
            border: 1px solid var(--yb-border);
        }
        .btn-secondary-yb:hover {
            background-color: var(--yb-charcoal-light);
            border-color: var(--yb-accent);
            color: var(--yb-accent);
        }
        .btn-sm-yb {
            padding: 7px 14px;
            font-size: 0.8rem;
        }
        .btn-lg-yb {
            padding: 13px 28px;
            font-size: 1rem;
        }

        /* 汉堡菜单按钮 */
        .navbar-toggler-yb {
            background: none;
            border: 1px solid var(--yb-border);
            border-radius: 6px;
            padding: 8px 10px;
            color: var(--yb-white);
            display: none;
            cursor: pointer;
        }
        .navbar-toggler-yb:hover {
            border-color: var(--yb-accent);
            color: var(--yb-accent);
        }

        /* ============ 面包屑 ============ */
        .yb-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            color: var(--yb-gray);
            margin-bottom: 10px;
            flex-wrap: wrap;
        }
        .yb-breadcrumb a {
            color: var(--yb-gray);
        }
        .yb-breadcrumb a:hover {
            color: var(--yb-accent);
        }
        .yb-breadcrumb .sep {
            color: var(--yb-gray-dark);
            font-size: 0.7rem;
        }
        .yb-breadcrumb .current {
            color: var(--yb-gray-dark);
            font-weight: 500;
        }

        /* ============ 分类横幅 ============ */
        .yb-cat-banner {
            background: linear-gradient(135deg, var(--yb-charcoal) 0%, var(--yb-black) 70%);
            border-bottom: 1px solid var(--yb-border);
            padding: 56px 0 48px;
            position: relative;
            overflow: hidden;
        }
        .yb-cat-banner .banner-bg {
            position: absolute;
            right: -60px;
            top: 50%;
            transform: translateY(-50%);
            width: 420px;
            height: 320px;
            object-fit: cover;
            opacity: 0.15;
            border-radius: 16px;
            pointer-events: none;
        }
        .yb-cat-banner h1 {
            font-size: 2.2rem;
            font-weight: 900;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
            color: var(--yb-white);
        }
        .yb-cat-banner h1 .h1-accent {
            color: var(--yb-accent);
        }
        .yb-cat-banner p {
            color: var(--yb-gray);
            font-size: 1rem;
            max-width: 640px;
            margin-bottom: 0;
            line-height: 1.75;
        }

        /* ============ 筛选工具条 ============ */
        .yb-filter-bar {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            padding: 16px 0;
            border-bottom: 1px solid var(--yb-border);
            margin-bottom: 36px;
        }
        .yb-filter-label {
            font-size: 0.82rem;
            color: var(--yb-gray-dark);
            font-weight: 600;
            margin-right: 4px;
            white-space: nowrap;
        }
        .yb-filter-tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            background-color: transparent;
            border: 1px solid var(--yb-border);
            color: var(--yb-gray);
            font-size: 0.82rem;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--yb-transition);
            white-space: nowrap;
        }
        .yb-filter-tag:hover {
            border-color: var(--yb-accent);
            color: var(--yb-accent);
        }
        .yb-filter-tag.active {
            background-color: var(--yb-accent);
            border-color: var(--yb-accent);
            color: var(--yb-black);
            font-weight: 700;
        }

        /* ============ 评测卡片 ============ */
        .yb-gear-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-bottom: 32px;
        }
        .yb-gear-card {
            background-color: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            overflow: hidden;
            transition: transform var(--yb-transition), border-color var(--yb-transition), box-shadow var(--yb-transition);
            display: flex;
            flex-direction: column;
        }
        .yb-gear-card:hover {
            transform: translateY(-4px);
            border-color: var(--yb-accent);
            box-shadow: var(--yb-shadow);
        }
        .yb-gear-card .gear-img-wrap {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background-color: var(--yb-black);
        }
        .yb-gear-card .gear-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 400ms ease;
        }
        .yb-gear-card:hover .gear-img-wrap img {
            transform: scale(1.04);
        }
        .yb-gear-card .gear-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background-color: rgba(14, 17, 22, 0.85);
            color: var(--yb-accent);
            font-size: 0.7rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 4px;
            letter-spacing: 0.04em;
        }
        .yb-gear-card .gear-score-badge {
            position: absolute;
            top: 12px;
            right: 12px;
            background-color: var(--yb-accent);
            color: var(--yb-black);
            font-size: 1.3rem;
            font-weight: 900;
            font-family: var(--yb-font-mono);
            padding: 6px 10px;
            border-radius: 8px;
            line-height: 1;
        }
        .yb-gear-card .gear-body {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .yb-gear-card .gear-name {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--yb-white);
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }
        .yb-gear-card .gear-rating-row {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 8px;
        }
        .yb-gear-card .gear-rating-label {
            font-size: 0.8rem;
            color: var(--yb-gray);
            min-width: 52px;
            font-weight: 500;
        }
        .yb-gear-card .gear-rating-bar {
            flex: 1;
            height: 6px;
            background-color: var(--yb-border);
            border-radius: 3px;
            overflow: hidden;
        }
        .yb-gear-card .gear-rating-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--yb-accent), var(--yb-cyan));
            border-radius: 3px;
            transition: width 600ms ease;
        }
        .yb-gear-card .gear-rating-val {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--yb-white);
            font-family: var(--yb-font-mono);
            min-width: 32px;
            text-align: right;
        }
        .yb-gear-card .gear-summary {
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px solid var(--yb-border);
            color: var(--yb-gray);
            font-size: 0.85rem;
            line-height: 1.65;
            flex: 1;
        }

        /* ============ 分页器 ============ */
        .yb-pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 10px 0 20px;
        }
        .yb-pagination a,
        .yb-pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 12px;
            border-radius: 8px;
            border: 1px solid var(--yb-border);
            color: var(--yb-gray);
            font-size: 0.85rem;
            font-weight: 500;
            transition: all var(--yb-transition);
        }
        .yb-pagination a:hover {
            border-color: var(--yb-accent);
            color: var(--yb-accent);
        }
        .yb-pagination .current {
            background-color: var(--yb-accent);
            border-color: var(--yb-accent);
            color: var(--yb-black);
            font-weight: 700;
        }
        .yb-pagination .disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        /* ============ 横向推荐卡片 ============ */
        .yb-featured-scroll {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .yb-featured-card {
            display: flex;
            gap: 16px;
            background-color: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            padding: 16px;
            transition: all var(--yb-transition);
        }
        .yb-featured-card:hover {
            border-color: var(--yb-accent);
            transform: translateY(-3px);
            box-shadow: var(--yb-shadow-sm);
        }
        .yb-featured-card img {
            width: 92px;
            height: 92px;
            object-fit: cover;
            border-radius: 8px;
            flex-shrink: 0;
        }
        .yb-featured-card .fc-body {
            display: flex;
            flex-direction: column;
            justify-content: center;
            min-width: 0;
        }
        .yb-featured-card .fc-title {
            font-size: 0.92rem;
            font-weight: 700;
            color: var(--yb-white);
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .yb-featured-card .fc-desc {
            font-size: 0.78rem;
            color: var(--yb-gray);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ============ 数据小板块 ============ */
        .yb-stats-strip {
            background-color: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            padding: 32px 36px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .yb-stat-item {
            text-align: center;
        }
        .yb-stat-item .stat-number {
            font-size: 2rem;
            font-weight: 900;
            font-family: var(--yb-font-mono);
            color: var(--yb-accent);
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        .yb-stat-item .stat-label {
            font-size: 0.82rem;
            color: var(--yb-gray);
            margin-top: 4px;
        }

        /* ============ 订阅CTA ============ */
        .yb-subscribe-block {
            background: linear-gradient(135deg, var(--yb-charcoal) 0%, var(--yb-black) 100%);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            padding: 48px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }
        .yb-subscribe-block .sb-left {
            flex: 1;
            min-width: 260px;
        }
        .yb-subscribe-block .sb-title {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--yb-white);
            margin-bottom: 6px;
        }
        .yb-subscribe-block .sb-desc {
            color: var(--yb-gray);
            font-size: 0.9rem;
            max-width: 480px;
        }
        .yb-subscribe-form {
            display: flex;
            gap: 12px;
            flex-shrink: 0;
            flex-wrap: wrap;
        }
        .yb-subscribe-form input[type="email"] {
            background-color: var(--yb-black);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-btn);
            padding: 11px 18px;
            color: var(--yb-white);
            font-size: 0.9rem;
            min-width: 260px;
            transition: border-color var(--yb-transition);
        }
        .yb-subscribe-form input[type="email"]::placeholder {
            color: var(--yb-gray-dark);
        }
        .yb-subscribe-form input[type="email"]:focus {
            outline: none;
            border-color: var(--yb-accent);
        }

        /* ============ 标签区 ============ */
        .yb-tags-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .yb-tag-link {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            background-color: transparent;
            border: 1px solid var(--yb-border);
            color: var(--yb-gray);
            font-size: 0.8rem;
            text-decoration: none;
            transition: all var(--yb-transition);
        }
        .yb-tag-link:hover {
            border-color: var(--yb-cyan);
            color: var(--yb-cyan);
        }

        /* ============ FAQ ============ */
        .yb-faq-item {
            background-color: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            padding: 22px 28px;
            margin-bottom: 14px;
            transition: border-color var(--yb-transition);
        }
        .yb-faq-item:hover {
            border-color: var(--yb-cyan);
        }
        .yb-faq-item .faq-q {
            font-size: 1rem;
            font-weight: 700;
            color: var(--yb-white);
            margin-bottom: 8px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }
        .yb-faq-item .faq-q .q-icon {
            color: var(--yb-accent);
            font-weight: 900;
            flex-shrink: 0;
        }
        .yb-faq-item .faq-a {
            color: var(--yb-gray);
            font-size: 0.9rem;
            line-height: 1.7;
            padding-left: 28px;
        }

        /* ============ 页脚 ============ */
        .yb-footer {
            background-color: var(--yb-black);
            border-top: 1px solid var(--yb-border);
            padding: 56px 0 24px;
            margin-top: 24px;
        }
        .yb-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .yb-footer .footer-brand {
            font-size: 1.25rem;
            font-weight: 900;
            color: var(--yb-white);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 10px;
        }
        .yb-footer .footer-brand .brand-dot {
            width: 8px;
            height: 8px;
            background: var(--yb-accent);
            border-radius: 50%;
        }
        .yb-footer .footer-desc {
            color: var(--yb-gray);
            font-size: 0.85rem;
            max-width: 320px;
            line-height: 1.7;
        }
        .yb-footer .footer-col h5 {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--yb-white);
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        .yb-footer .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .yb-footer .footer-col ul a {
            color: var(--yb-gray);
            font-size: 0.85rem;
            transition: color var(--yb-transition);
        }
        .yb-footer .footer-col ul a:hover {
            color: var(--yb-accent);
        }
        .yb-footer .footer-bottom {
            border-top: 1px solid var(--yb-border);
            padding-top: 18px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.78rem;
            color: var(--yb-gray-dark);
        }
        .yb-footer .footer-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .yb-footer .footer-links a {
            color: var(--yb-gray-dark);
            font-size: 0.78rem;
        }
        .yb-footer .footer-links a:hover {
            color: var(--yb-accent);
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1199.98px) {
            .yb-gear-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .yb-featured-scroll {
                grid-template-columns: repeat(2, 1fr);
            }
            .yb-stats-strip {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 991.98px) {
            .yb-navbar {
                padding: 0 16px;
                flex-wrap: wrap;
                min-height: 56px;
            }
            .yb-nav-links {
                position: fixed;
                top: var(--yb-header-height);
                left: 0;
                right: 0;
                background-color: rgba(14, 17, 22, 0.98);
                flex-direction: column;
                gap: 0;
                padding: 16px 24px;
                border-bottom: 1px solid var(--yb-border);
                display: none;
                z-index: 1029;
            }
            .yb-nav-links.open {
                display: flex;
            }
            .yb-nav-links li {
                width: 100%;
            }
            .yb-nav-links a {
                display: block;
                padding: 12px 0;
                font-size: 1rem;
            }
            .navbar-toggler-yb {
                display: block;
            }
            .yb-nav-cta {
                margin-left: auto;
                gap: 6px;
            }
            .yb-nav-cta .btn {
                padding: 8px 12px;
                font-size: 0.78rem;
            }
            .yb-gear-grid {
                grid-template-columns: 1fr;
            }
            .yb-featured-scroll {
                grid-template-columns: 1fr;
            }
            .yb-cat-banner h1 {
                font-size: 1.7rem;
            }
            .yb-subscribe-block {
                flex-direction: column;
                align-items: stretch;
                text-align: left;
                padding: 36px 24px;
            }
            .yb-subscribe-form {
                flex-direction: column;
            }
            .yb-subscribe-form input[type="email"] {
                min-width: auto;
                width: 100%;
            }
            .yb-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 575.98px) {
            :root {
                --yb-header-height: 56px;
            }
            section {
                padding: 48px 0;
            }
            .yb-cat-banner {
                padding: 36px 0 32px;
            }
            .yb-cat-banner h1 {
                font-size: 1.45rem;
            }
            .yb-cat-banner .banner-bg {
                right: -120px;
                width: 280px;
                height: 220px;
                opacity: 0.1;
            }
            .yb-stats-strip {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
                padding: 24px 20px;
            }
            .yb-stat-item .stat-number {
                font-size: 1.5rem;
            }
            .yb-navbar {
                padding: 0 12px;
            }
            .yb-brand {
                font-size: 1.1rem;
            }
            .yb-nav-cta .btn {
                padding: 6px 10px;
                font-size: 0.72rem;
            }
            .yb-nav-cta .btn-secondary-yb {
                display: none;
            }
            .yb-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .yb-footer {
                padding: 40px 0 16px;
            }
            .yb-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .yb-filter-bar {
                gap: 6px;
            }
            .yb-filter-tag {
                padding: 5px 12px;
                font-size: 0.75rem;
            }
            .yb-gear-card .gear-body {
                padding: 16px 18px 18px;
            }
        }

/* roulang page: category4 */
:root {
            --yb-black: #0E1116;
            --yb-charcoal: #161B22;
            --yb-charcoal-light: #1C232C;
            --yb-white: #F4F6F8;
            --yb-gray: #9AA3AE;
            --yb-gray-dark: #5A6472;
            --yb-accent: #C6FF3D;
            --yb-accent-hover: #D6FF6E;
            --yb-cyan: #5EE6D0;
            --yb-alert: #E36B4A;
            --yb-border: #2A303A;
            --yb-radius-card: 12px;
            --yb-radius-btn: 8px;
            --yb-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
            --yb-shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.3);
            --yb-transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
            --yb-font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --yb-font-mono: 'Roboto Mono', 'SF Mono', 'DIN', 'Courier New', monospace;
            --yb-header-height: 72px;
            --yb-bottom-cta-height: 72px;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: calc(var(--yb-header-height) + 16px);
        }

        body {
            font-family: var(--yb-font-sans);
            background-color: var(--yb-black);
            color: var(--yb-white);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-bottom: 0;
            overflow-x: hidden;
        }

        a {
            color: var(--yb-accent);
            text-decoration: none;
            transition: color var(--yb-transition), border-color var(--yb-transition), background-color var(--yb-transition);
        }

        a:hover {
            color: var(--yb-accent-hover);
        }

        a:focus-visible {
            outline: 2px solid var(--yb-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        .container-wide {
            max-width: 1360px;
            padding-left: 20px;
            padding-right: 20px;
            margin: 0 auto;
        }

        section {
            padding: 80px 0;
            position: relative;
        }

        .section-sm {
            padding: 48px 0;
        }

        .section-lg {
            padding: 100px 0;
        }

        .section-divider {
            border-top: 1px solid var(--yb-border);
        }

        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--yb-cyan);
            margin-bottom: 8px;
            position: relative;
            padding-left: 16px;
        }

        .section-tag::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 6px;
            height: 6px;
            background: var(--yb-cyan);
            border-radius: 50%;
        }

        .section-title {
            margin-bottom: 12px;
            font-weight: 800;
            letter-spacing: -0.01em;
        }

        .section-desc {
            color: var(--yb-gray);
            font-size: 1rem;
            max-width: 680px;
            margin-bottom: 2.5rem;
        }

        .text-accent {
            color: var(--yb-accent);
        }

        .text-cyan {
            color: var(--yb-cyan);
        }

        .text-gray {
            color: var(--yb-gray);
        }

        /* ============ NAVBAR ============ */
        .yb-navbar {
            background-color: rgba(14, 17, 22, 0.96);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--yb-border);
            min-height: var(--yb-header-height);
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: sticky;
            top: 0;
            z-index: 1030;
            transition: box-shadow var(--yb-transition);
        }

        .yb-navbar.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        .yb-brand {
            font-size: 1.35rem;
            font-weight: 900;
            color: var(--yb-white);
            letter-spacing: 0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .yb-brand .brand-dot {
            width: 10px;
            height: 10px;
            background: var(--yb-accent);
            border-radius: 50%;
            flex-shrink: 0;
            box-shadow: 0 0 12px rgba(198, 255, 61, 0.6);
        }

        .yb-brand:hover {
            color: var(--yb-white);
        }

        .yb-nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .yb-nav-links a {
            color: var(--yb-gray);
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            padding: 6px 0;
            transition: color var(--yb-transition);
        }

        .yb-nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--yb-accent);
            transition: width var(--yb-transition);
        }

        .yb-nav-links a:hover,
        .yb-nav-links a.active {
            color: var(--yb-white);
        }

        .yb-nav-links a:hover::after,
        .yb-nav-links a.active::after {
            width: 100%;
        }

        .yb-nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn {
            border-radius: var(--yb-radius-btn);
            font-weight: 600;
            padding: 10px 20px;
            transition: all var(--yb-transition);
            border: 1px solid transparent;
        }

        .btn:focus-visible {
            outline: 2px solid var(--yb-accent);
            outline-offset: 2px;
        }

        .btn-primary-yb {
            background-color: var(--yb-accent);
            color: var(--yb-black);
            border-color: var(--yb-accent);
        }

        .btn-primary-yb:hover {
            background-color: var(--yb-accent-hover);
            border-color: var(--yb-accent-hover);
            color: var(--yb-black);
            box-shadow: 0 0 20px rgba(198, 255, 61, 0.35);
            transform: translateY(-1px);
        }

        .btn-primary-yb:active {
            background-color: var(--yb-accent);
            border-color: var(--yb-accent);
            color: var(--yb-black);
            transform: translateY(0);
        }

        .btn-outline-yb {
            background-color: transparent;
            color: var(--yb-white);
            border-color: var(--yb-border);
        }

        .btn-outline-yb:hover {
            background-color: rgba(255, 255, 255, 0.06);
            border-color: var(--yb-accent);
            color: var(--yb-accent);
        }

        .btn-outline-yb:active {
            background-color: rgba(255, 255, 255, 0.1);
            border-color: var(--yb-accent);
            color: var(--yb-accent);
        }

        /* Mobile nav toggle */
        .yb-nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--yb-white);
            font-size: 1.6rem;
            padding: 4px 8px;
            cursor: pointer;
        }

        .yb-nav-toggle:hover {
            color: var(--yb-accent);
        }

        .yb-nav-toggle:focus-visible {
            outline: 2px solid var(--yb-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ============ BREADCRUMB ============ */
        .breadcrumb-yb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--yb-gray);
            margin-bottom: 0;
            list-style: none;
            padding: 0;
        }

        .breadcrumb-yb a {
            color: var(--yb-gray);
            transition: color var(--yb-transition);
        }

        .breadcrumb-yb a:hover {
            color: var(--yb-accent);
        }

        .breadcrumb-yb .separator {
            color: var(--yb-gray-dark);
            font-size: 0.7rem;
        }

        .breadcrumb-yb .current {
            color: var(--yb-white);
            font-weight: 500;
        }

        /* ============ CATEGORY BANNER ============ */
        .yb-cat-banner {
            background-color: var(--yb-charcoal);
            padding: 56px 0 48px;
            border-bottom: 1px solid var(--yb-border);
            position: relative;
            overflow: hidden;
        }

        .yb-cat-banner::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 40%;
            height: 100%;
            background: radial-gradient(ellipse at top right, rgba(198, 255, 61, 0.07), transparent 70%);
            pointer-events: none;
        }

        .yb-cat-banner h1 {
            font-size: 2.2rem;
            font-weight: 900;
            letter-spacing: -0.01em;
            margin: 16px 0 12px;
            position: relative;
            z-index: 1;
        }

        .yb-cat-banner .banner-desc {
            color: var(--yb-gray);
            font-size: 1.05rem;
            max-width: 720px;
            margin-bottom: 0;
            position: relative;
            z-index: 1;
        }

        /* ============ FILTER BAR ============ */
        .yb-filter-bar {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            padding: 16px 0;
        }

        .yb-filter-label {
            font-size: 0.85rem;
            color: var(--yb-gray);
            font-weight: 600;
            margin-right: 4px;
            letter-spacing: 0.03em;
        }

        .yb-filter-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--yb-gray);
            background-color: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            cursor: pointer;
            transition: all var(--yb-transition);
            white-space: nowrap;
        }

        .yb-filter-tag:hover {
            color: var(--yb-white);
            border-color: var(--yb-gray-dark);
            background-color: var(--yb-charcoal-light);
        }

        .yb-filter-tag.active {
            color: var(--yb-black);
            background-color: var(--yb-accent);
            border-color: var(--yb-accent);
            font-weight: 600;
        }

        .yb-filter-tag:focus-visible {
            outline: 2px solid var(--yb-accent);
            outline-offset: 2px;
        }

        /* ============ NEWS LIST ============ */
        .yb-news-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .yb-news-card {
            display: flex;
            background-color: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            overflow: hidden;
            transition: all var(--yb-transition);
            box-shadow: var(--yb-shadow-sm);
        }

        .yb-news-card:hover {
            transform: translateY(-4px);
            border-color: var(--yb-accent);
            box-shadow: var(--yb-shadow);
        }

        .yb-news-thumb {
            flex-shrink: 0;
            width: 260px;
            min-height: 180px;
            position: relative;
            overflow: hidden;
        }

        .yb-news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .yb-news-body {
            padding: 20px 24px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }

        .yb-news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--yb-gray);
        }

        .yb-news-tag {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 600;
            background-color: rgba(94, 230, 208, 0.12);
            color: var(--yb-cyan);
            letter-spacing: 0.03em;
        }

        .yb-news-date {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .yb-news-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin: 0;
            line-height: 1.5;
        }

        .yb-news-title a {
            color: var(--yb-white);
            transition: color var(--yb-transition);
        }

        .yb-news-title a:hover {
            color: var(--yb-accent);
        }

        .yb-news-excerpt {
            color: var(--yb-gray);
            font-size: 0.9rem;
            margin: 0;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .yb-news-readmore {
            align-self: flex-start;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--yb-accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color var(--yb-transition);
        }

        .yb-news-readmore:hover {
            color: var(--yb-accent-hover);
        }

        /* ============ DATA STRIP ============ */
        .yb-data-strip {
            background-color: var(--yb-charcoal);
            border-top: 1px solid var(--yb-border);
            border-bottom: 1px solid var(--yb-border);
            padding: 40px 0;
        }

        .yb-data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .yb-data-item {
            text-align: center;
            padding: 16px;
        }

        .yb-data-number {
            font-family: var(--yb-font-mono);
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--yb-accent);
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        .yb-data-label {
            color: var(--yb-gray);
            font-size: 0.85rem;
            margin-top: 4px;
        }

        /* ============ FEATURED CARDS ============ */
        .yb-featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .yb-featured-card {
            background-color: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            overflow: hidden;
            transition: all var(--yb-transition);
            box-shadow: var(--yb-shadow-sm);
        }

        .yb-featured-card:hover {
            transform: translateY(-4px);
            border-color: var(--yb-accent);
            box-shadow: var(--yb-shadow);
        }

        .yb-featured-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        .yb-featured-body {
            padding: 20px;
        }

        .yb-featured-title {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
            line-height: 1.5;
        }

        .yb-featured-title a {
            color: var(--yb-white);
        }

        .yb-featured-title a:hover {
            color: var(--yb-accent);
        }

        .yb-featured-desc {
            color: var(--yb-gray);
            font-size: 0.85rem;
            margin: 0;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ============ TIMELINE ============ */
        .yb-timeline {
            position: relative;
            padding-left: 28px;
            margin: 0;
            list-style: none;
        }

        .yb-timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 4px;
            bottom: 4px;
            width: 2px;
            background: var(--yb-border);
        }

        .yb-timeline-item {
            position: relative;
            padding-bottom: 24px;
        }

        .yb-timeline-item:last-child {
            padding-bottom: 0;
        }

        .yb-timeline-item::before {
            content: '';
            position: absolute;
            left: -28px;
            top: 6px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background-color: var(--yb-black);
            border: 3px solid var(--yb-accent);
            box-shadow: 0 0 10px rgba(198, 255, 61, 0.3);
        }

        .yb-timeline-date {
            font-family: var(--yb-font-mono);
            font-size: 0.8rem;
            color: var(--yb-cyan);
            font-weight: 600;
            letter-spacing: 0.03em;
        }

        .yb-timeline-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--yb-white);
            margin: 4px 0 4px;
        }

        .yb-timeline-desc {
            color: var(--yb-gray);
            font-size: 0.9rem;
            margin: 0;
            line-height: 1.6;
        }

        /* ============ SUBSCRIBE CTA ============ */
        .yb-subscribe-cta {
            background-color: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            border-radius: var(--yb-radius-card);
            padding: 40px 32px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .yb-subscribe-cta::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(198, 255, 61, 0.08), transparent 70%);
            pointer-events: none;
        }

        .yb-subscribe-cta h2 {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 8px;
            position: relative;
        }

        .yb-subscribe-cta p {
            color: var(--yb-gray);
            margin-bottom: 20px;
            position: relative;
        }

        .yb-subscribe-form {
            display: flex;
            gap: 12px;
            justify-content: center;
            max-width: 480px;
            margin: 0 auto;
            position: relative;
            flex-wrap: wrap;
        }

        .yb-subscribe-form input[type="email"] {
            flex: 1;
            min-width: 240px;
            padding: 12px 16px;
            border-radius: var(--yb-radius-btn);
            background-color: var(--yb-black);
            border: 1px solid var(--yb-border);
            color: var(--yb-white);
            transition: border-color var(--yb-transition);
        }

        .yb-subscribe-form input[type="email"]:focus {
            outline: none;
            border-color: var(--yb-accent);
            box-shadow: 0 0 0 3px rgba(198, 255, 61, 0.12);
        }

        .yb-subscribe-form input[type="email"]::placeholder {
            color: var(--yb-gray-dark);
        }

        /* ============ PAGINATION ============ */
        .yb-pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .yb-pagination .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--yb-gray);
            background-color: var(--yb-charcoal);
            border: 1px solid var(--yb-border);
            cursor: pointer;
            transition: all var(--yb-transition);
        }

        .yb-pagination .page-btn:hover {
            color: var(--yb-white);
            border-color: var(--yb-gray-dark);
            background-color: var(--yb-charcoal-light);
        }

        .yb-pagination .page-btn.active {
            color: var(--yb-black);
            background-color: var(--yb-accent);
            border-color: var(--yb-accent);
            font-weight: 600;
        }

        .yb-pagination .page-btn:focus-visible {
            outline: 2px solid var(--yb-accent);
            outline-offset: 2px;
        }

        .yb-pagination .page-btn.disabled {
            opacity: 0.4;
            cursor: not-allowed;
            pointer-events: none;
        }

        /* ============ MORE LINK ============ */
        .yb-more-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--yb-accent);
            transition: color var(--yb-transition);
        }

        .yb-more-link:hover {
            color: var(--yb-accent-hover);
        }

        /* ============ FOOTER ============ */
        .yb-footer {
            background-color: var(--yb-charcoal);
            border-top: 1px solid var(--yb-border);
            padding: 56px 0 24px;
            margin-top: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid var(--yb-border);
        }

        .footer-brand {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--yb-white);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }

        .footer-brand .brand-dot {
            width: 8px;
            height: 8px;
            background: var(--yb-accent);
            border-radius: 50%;
            flex-shrink: 0;
        }

        .footer-desc {
            color: var(--yb-gray);
            font-size: 0.9rem;
            margin-bottom: 0;
            line-height: 1.7;
        }

        .footer-col h5 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--yb-white);
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            color: var(--yb-gray);
            font-size: 0.9rem;
            transition: color var(--yb-transition);
        }

        .footer-col ul li a:hover {
            color: var(--yb-accent);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 20px;
            font-size: 0.8rem;
            color: var(--yb-gray-dark);
        }

        .footer-bottom .footer-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-bottom .footer-links a {
            color: var(--yb-gray);
            transition: color var(--yb-transition);
        }

        .footer-bottom .footer-links a:hover {
            color: var(--yb-accent);
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .yb-featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .yb-data-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 767px) {
            .yb-navbar {
                padding: 0 16px;
            }

            .yb-nav-links {
                display: none;
                position: absolute;
                top: var(--yb-header-height);
                left: 0;
                right: 0;
                background-color: rgba(14, 17, 22, 0.98);
                flex-direction: column;
                gap: 0;
                padding: 16px 20px;
                border-bottom: 1px solid var(--yb-border);
                z-index: 1029;
            }

            .yb-nav-links.open {
                display: flex;
            }

            .yb-nav-links li {
                width: 100%;
                padding: 8px 0;
            }

            .yb-nav-links a {
                display: block;
                padding: 8px 0;
                font-size: 1rem;
            }

            .yb-nav-cta {
                gap: 8px;
            }

            .yb-nav-cta .btn {
                padding: 8px 14px;
                font-size: 0.85rem;
            }

            .yb-nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }

            section {
                padding: 48px 0;
            }

            .section-lg {
                padding: 56px 0;
            }

            .yb-cat-banner {
                padding: 40px 0 32px;
            }

            .yb-cat-banner h1 {
                font-size: 1.6rem;
            }

            .yb-news-card {
                flex-direction: column;
            }

            .yb-news-thumb {
                width: 100%;
                min-height: 200px;
                max-height: 240px;
            }

            .yb-news-body {
                padding: 16px 18px;
            }

            .yb-featured-grid {
                grid-template-columns: 1fr;
            }

            .yb-data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }

            .yb-data-number {
                font-size: 1.6rem;
            }

            .yb-subscribe-cta {
                padding: 28px 20px;
            }

            .yb-subscribe-cta h2 {
                font-size: 1.2rem;
            }

            .yb-filter-bar {
                gap: 8px;
                padding: 12px 0;
            }

            .yb-filter-tag {
                padding: 6px 12px;
                font-size: 0.8rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                text-align: left;
            }
        }

        @media (max-width: 520px) {
            .yb-navbar {
                min-height: 56px;
                padding: 0 12px;
            }

            :root {
                --yb-header-height: 56px;
            }

            .yb-brand {
                font-size: 1.1rem;
            }

            .yb-nav-cta .btn {
                padding: 6px 10px;
                font-size: 0.75rem;
            }

            .yb-cat-banner h1 {
                font-size: 1.35rem;
            }

            .yb-cat-banner .banner-desc {
                font-size: 0.9rem;
            }

            .yb-news-title {
                font-size: 0.95rem;
            }

            .yb-data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 6px;
            }

            .yb-data-item {
                padding: 10px 8px;
            }

            .yb-data-number {
                font-size: 1.3rem;
            }

            .yb-data-label {
                font-size: 0.75rem;
            }

            .yb-pagination .page-btn {
                min-width: 34px;
                height: 34px;
                padding: 0 10px;
                font-size: 0.8rem;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}