/* roulang page: index */
:root {
            --primary-black: #0E1113;
            --deep-charcoal: #171B1E;
            --sport-green: #C9F158;
            --porcelain-white: #F5F7F5;
            --cool-gray: #E6EAE7;
            --mist-gray: #5B6660;
            --warm-metal-gray: #9AA39D;
            --highlight-cyan: #2DE0C5;
            --warning-orange: #F2A33C;
            --radius-card: 12px;
            --radius-btn: 999px;
            --radius-label: 999px;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 10px 24px rgba(0, 0, 0, 0.10);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --transition-fast: 150ms ease;
            --transition-base: 200ms ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.85;
            color: var(--deep-charcoal);
            background: var(--porcelain-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        .section-spacing {
            padding: 96px 0;
        }

        @media (max-width: 768px) {
            .section-spacing {
                padding: 48px 0;
            }
        }

        .heading-h1 {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--primary-black);
        }

        .heading-h2 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.02em;
            color: var(--primary-black);
        }

        .heading-h3 {
            font-size: 22px;
            font-weight: 700;
            line-height: 1.35;
            letter-spacing: -0.01em;
            color: var(--primary-black);
        }

        @media (max-width: 768px) {
            .heading-h1 {
                font-size: 30px;
            }
            .heading-h2 {
                font-size: 26px;
            }
            .heading-h3 {
                font-size: 19px;
            }
        }

        .text-body {
            font-size: 16px;
            line-height: 1.85;
            color: var(--deep-charcoal);
        }

        .text-small {
            font-size: 14px;
            line-height: 1.7;
            color: var(--mist-gray);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            line-height: 1.5;
            transition: all var(--transition-base);
            white-space: nowrap;
            position: relative;
            overflow: hidden;
        }

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

        .btn-primary {
            background: var(--sport-green);
            color: var(--primary-black);
        }

        .btn-primary:hover {
            background: #b8e040;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary-black);
            border: 1.5px solid var(--primary-black);
        }

        .btn-outline:hover {
            background: var(--primary-black);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.6);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 16px;
        }

        .label-pill {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: var(--radius-label);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .label-green {
            background: rgba(201, 241, 88, 0.18);
            color: #6b8f1a;
            border: 1px solid rgba(201, 241, 88, 0.5);
        }

        .label-cyan {
            background: rgba(45, 224, 197, 0.12);
            color: #0e8f7a;
            border: 1px solid rgba(45, 224, 197, 0.4);
        }

        .label-orange {
            background: rgba(242, 163, 60, 0.15);
            color: #b8751a;
            border: 1px solid rgba(242, 163, 60, 0.5);
        }

        .card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--cool-gray);
            transition: all var(--transition-base);
            overflow: hidden;
        }

        .card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            border-color: var(--sport-green);
        }

        .card-hover-lift {
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
        }

        .card-hover-lift:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            border-color: var(--sport-green);
        }

        .divider {
            height: 1px;
            background: var(--cool-gray);
            border: none;
            margin: 24px 0;
        }

        .divider-light {
            height: 1px;
            background: rgba(255, 255, 255, 0.12);
            border: none;
            margin: 24px 0;
        }

        .section-label {
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--mist-gray);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .section-label::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--sport-green);
            border-radius: 2px;
        }

        .fade-in-up {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .fade-in-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .nav-link {
            position: relative;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            padding: 8px 12px;
            border-radius: 6px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-link.active {
            color: var(--sport-green);
            font-weight: 700;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--sport-green);
            border-radius: 2px;
        }

        .pill-tab {
            padding: 6px 20px;
            border-radius: var(--radius-label);
            font-size: 13px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.7);
            background: rgba(255, 255, 255, 0.06);
            transition: all var(--transition-fast);
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .pill-tab:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.12);
        }

        .pill-tab.active {
            color: var(--primary-black);
            background: var(--sport-green);
            border-color: var(--sport-green);
            font-weight: 700;
        }

        .faq-item {
            border: 1px solid var(--cool-gray);
            border-radius: var(--radius-card);
            background: #fff;
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            border-color: var(--sport-green);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 16px;
            color: var(--primary-black);
            text-align: left;
            cursor: pointer;
            gap: 16px;
            transition: background var(--transition-fast);
        }

        .faq-question:hover {
            background: var(--porcelain-white);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            color: var(--mist-gray);
            font-size: 15px;
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        .faq-icon {
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .footer-link {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            transition: color var(--transition-fast);
        }

        .footer-link:hover {
            color: var(--sport-green);
        }

        .overlay-scrim {
            position: relative;
        }

        .overlay-scrim::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(14, 17, 19, 0.92) 0%, rgba(14, 17, 19, 0.65) 50%, rgba(14, 17, 19, 0.92) 100%);
            z-index: 1;
            pointer-events: none;
        }

        .overlay-scrim>* {
            position: relative;
            z-index: 2;
        }

        @media (max-width: 1024px) {
            .desktop-nav-menu {
                display: none !important;
            }
            .mobile-nav-toggle {
                display: flex !important;
            }
        }

        @media (min-width: 1025px) {
            .mobile-nav-toggle {
                display: none !important;
            }
        }

        .mobile-drawer {
            transform: translateX(100%);
            transition: transform 0.35s ease;
        }

        .mobile-drawer.open {
            transform: translateX(0);
        }

        .hero-scroll-indicator {
            animation: scrollPulse 2s ease-in-out infinite;
        }

        @keyframes scrollPulse {
            0%,
            100% {
                opacity: 0.5;
                transform: translateY(0);
            }
            50% {
                opacity: 1;
                transform: translateY(6px);
            }
        }

        .tag-orange {
            background: rgba(242, 163, 60, 0.15);
            color: #b8751a;
            border: 1px solid rgba(242, 163, 60, 0.5);
        }

        .tag-cyan {
            background: rgba(45, 224, 197, 0.12);
            color: #0e8f7a;
            border: 1px solid rgba(45, 224, 197, 0.4);
        }

/* roulang page: category2 */
:root {
            --primary-black: #0E1113;
            --deep-charcoal: #171B1E;
            --sport-green: #C9F158;
            --porcelain-white: #F5F7F5;
            --cool-gray: #E6EAE7;
            --mist-gray: #5B6660;
            --warm-metal-gray: #9AA39D;
            --highlight-cyan: #2DE0C5;
            --warning-orange: #F2A33C;
            --radius-card: 12px;
            --radius-btn: 999px;
            --radius-label: 999px;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 10px 24px rgba(0, 0, 0, 0.10);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --transition-fast: 150ms ease;
            --transition-base: 200ms ease;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.85;
            color: var(--deep-charcoal);
            background: var(--porcelain-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        .section-spacing {
            padding: 96px 0;
        }

        @media (max-width: 640px) {
            .section-spacing {
                padding: 48px 0;
            }
        }

        .heading-h1 {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--primary-black);
        }

        @media (max-width: 640px) {
            .heading-h1 {
                font-size: 30px;
            }
        }

        .heading-h2 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.02em;
            color: var(--primary-black);
        }

        @media (max-width: 640px) {
            .heading-h2 {
                font-size: 26px;
            }
        }

        .heading-h3 {
            font-size: 22px;
            font-weight: 700;
            line-height: 1.35;
            letter-spacing: -0.01em;
            color: var(--primary-black);
        }

        @media (max-width: 640px) {
            .heading-h3 {
                font-size: 19px;
            }
        }

        .text-body {
            font-size: 16px;
            line-height: 1.85;
            color: var(--deep-charcoal);
        }

        .text-small {
            font-size: 14px;
            line-height: 1.7;
            color: var(--mist-gray);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            line-height: 1.5;
            transition: all var(--transition-base);
            white-space: nowrap;
            position: relative;
            overflow: hidden;
        }

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

        .btn-primary {
            background: var(--sport-green);
            color: var(--primary-black);
        }

        .btn-primary:hover {
            background: #b8e040;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary-black);
            border: 1.5px solid var(--primary-black);
        }

        .btn-outline:hover {
            background: var(--primary-black);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.6);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 16px;
        }

        .label-pill {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: var(--radius-label);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--cool-gray);
            transition: all var(--transition-base);
            overflow: hidden;
        }

        .card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            border-color: var(--sport-green);
        }

        .card-hover-lift {
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
        }

        .card-hover-lift:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            border-color: var(--sport-green);
        }

        .divider {
            height: 1px;
            background: var(--cool-gray);
            border: none;
            margin: 24px 0;
        }

        .divider-light {
            height: 1px;
            background: rgba(255, 255, 255, 0.12);
            border: none;
            margin: 24px 0;
        }

        .section-label {
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--mist-gray);
            display: inline-block;
            margin-bottom: 12px;
        }

        /* 导航样式 */
        .desktop-nav-menu {
            display: flex;
        }

        @media (max-width: 768px) {
            .desktop-nav-menu {
                display: none;
            }
        }

        .mobile-nav-toggle {
            display: none;
        }

        @media (max-width: 768px) {
            .mobile-nav-toggle {
                display: block;
            }
        }

        .nav-link {
            position: relative;
            padding: 6px 14px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.7);
            border-radius: 8px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-link.active {
            color: var(--sport-green);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            background: var(--sport-green);
            border-radius: 2px;
        }

        .pill-tab {
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.65);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid transparent;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .pill-tab:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.12);
        }

        .pill-tab.active {
            background: var(--sport-green);
            color: var(--primary-black);
            font-weight: 600;
        }

        /* 移动端抽屉 */
        .drawer-panel {
            position: fixed;
            top: 0;
            right: -100%;
            width: 100%;
            max-width: 360px;
            height: 100vh;
            background: var(--primary-black);
            z-index: 100;
            padding: 20px;
            transition: right 0.3s ease;
            overflow-y: auto;
            border-left: 1px solid rgba(255, 255, 255, 0.08);
        }

        .drawer-panel.open {
            right: 0;
        }

        .drawer-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 99;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }

        .drawer-overlay.open {
            opacity: 1;
            pointer-events: auto;
        }

        .drawer-nav-link {
            display: block;
            padding: 12px 16px;
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            border-radius: 10px;
            transition: all var(--transition-fast);
            margin-bottom: 4px;
        }

        .drawer-nav-link:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }

        .drawer-nav-link.active {
            color: var(--sport-green);
            background: rgba(201, 241, 88, 0.08);
            font-weight: 600;
        }

        /* 数据指数页面特有 */
        .trend-chart-placeholder {
            width: 100%;
            height: 220px;
            background: linear-gradient(135deg, rgba(45, 224, 197, 0.08), rgba(201, 241, 88, 0.12));
            border-radius: 8px;
            border: 1px dashed rgba(45, 224, 197, 0.35);
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }

        .trend-chart-placeholder::before {
            content: '';
            position: absolute;
            top: 20%;
            left: 10%;
            width: 80%;
            height: 60%;
            background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100%25' height='100%25' viewBox='0 0 600 200' preserveAspectRatio='none'%3E%3Cpath d='M0 150 L60 140 L120 155 L180 120 L240 130 L300 90 L360 100 L420 65 L480 75 L540 40 L600 55' fill='none' stroke='%232DE0C5' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3Cpath d='M0 170 L60 160 L120 168 L180 145 L240 150 L300 120 L360 128 L420 100 L480 108 L540 75 L600 82' fill='none' stroke='%23C9F158' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat center;
            background-size: 100% 100%;
            opacity: 0.9;
        }

        .data-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.01em;
        }

        .data-tag.positive {
            background: rgba(45, 224, 197, 0.12);
            color: #1a9d8a;
        }

        .data-tag.negative {
            background: rgba(242, 163, 60, 0.12);
            color: #c07a1c;
        }

        .data-tag.neutral {
            background: rgba(91, 102, 96, 0.10);
            color: var(--mist-gray);
        }

        .index-compare-bar {
            height: 8px;
            border-radius: 999px;
            background: var(--cool-gray);
            overflow: hidden;
        }

        .index-compare-bar .bar-fill {
            height: 100%;
            border-radius: 999px;
            transition: width 0.6s ease;
        }

        .faq-item {
            border-bottom: 1px solid var(--cool-gray);
        }

        .faq-question {
            width: 100%;
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            font-size: 16px;
            color: var(--primary-black);
            text-align: left;
            transition: color var(--transition-fast);
            gap: 16px;
        }

        .faq-question:hover {
            color: var(--mist-gray);
        }

        .faq-question .fa-chevron-down {
            font-size: 14px;
            transition: transform 0.3s ease;
            flex-shrink: 0;
            color: var(--warm-metal-gray);
        }

        .faq-question.active .fa-chevron-down {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 0;
            color: var(--mist-gray);
            font-size: 15px;
            line-height: 1.8;
        }

        .faq-answer.open {
            max-height: 300px;
            padding: 0 0 20px;
        }

        .footer-link {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            transition: color var(--transition-fast);
            display: inline-block;
        }

        .footer-link:hover {
            color: var(--sport-green);
        }

        /* 进入视口动画 */
        .fade-up {
            opacity: 0;
            transform: translateY(16px);
            transition: opacity 0.5s ease, transform 0.5s ease;
        }

        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* 深色区域文字 */
        .dark-text-title {
            color: #fff;
        }

        .dark-text-body {
            color: rgba(255, 255, 255, 0.7);
        }

        /* 响应式额外补充 */
        @media (max-width: 520px) {
            .heading-h1 {
                font-size: 26px;
            }
            .heading-h2 {
                font-size: 22px;
            }
            .heading-h3 {
                font-size: 17px;
            }
            .btn-lg {
                padding: 14px 24px;
                font-size: 14px;
            }
            .trend-chart-placeholder {
                height: 160px;
            }
        }

        @media (min-width: 769px) and (max-width: 1024px) {
            .heading-h1 {
                font-size: 36px;
            }
            .heading-h2 {
                font-size: 28px;
            }
        }

/* roulang page: category1 */
:root {
            --primary-black: #0E1113;
            --deep-charcoal: #171B1E;
            --sport-green: #C9F158;
            --porcelain-white: #F5F7F5;
            --cool-gray: #E6EAE7;
            --mist-gray: #5B6660;
            --warm-metal-gray: #9AA39D;
            --highlight-cyan: #2DE0C5;
            --warning-orange: #F2A33C;
            --radius-card: 12px;
            --radius-btn: 999px;
            --radius-label: 999px;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 10px 24px rgba(0, 0, 0, 0.10);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --transition-fast: 150ms ease;
            --transition-base: 200ms ease;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.85;
            color: var(--deep-charcoal);
            background: var(--porcelain-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-spacing {
            padding: 88px 0;
        }

        .heading-h1 {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--primary-black);
        }

        .heading-h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.02em;
            color: var(--primary-black);
        }

        .heading-h3 {
            font-size: 21px;
            font-weight: 700;
            line-height: 1.35;
            letter-spacing: -0.01em;
            color: var(--primary-black);
        }

        .text-body {
            font-size: 16px;
            line-height: 1.85;
            color: var(--deep-charcoal);
        }

        .text-small {
            font-size: 14px;
            line-height: 1.7;
            color: var(--mist-gray);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            line-height: 1.5;
            transition: all var(--transition-base);
            white-space: nowrap;
            position: relative;
            overflow: hidden;
        }

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

        .btn-primary {
            background: var(--sport-green);
            color: var(--primary-black);
        }

        .btn-primary:hover {
            background: #b8e040;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary-black);
            border: 1.5px solid var(--primary-black);
        }

        .btn-outline:hover {
            background: var(--primary-black);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.6);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 16px;
        }

        .label-pill {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: var(--radius-label);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .label-pill.sport {
            background: rgba(201, 241, 88, 0.15);
            color: #3a5210;
            border: 1px solid rgba(201, 241, 88, 0.5);
        }

        .label-pill.hot {
            background: rgba(242, 163, 60, 0.15);
            color: #a35b10;
            border: 1px solid rgba(242, 163, 60, 0.5);
        }

        .label-pill.blue {
            background: rgba(45, 224, 197, 0.12);
            color: #0d6b5c;
            border: 1px solid rgba(45, 224, 197, 0.45);
        }

        .card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--cool-gray);
            transition: all var(--transition-base);
            overflow: hidden;
        }

        .card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            border-color: var(--sport-green);
        }

        .card-hover-lift {
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
        }

        .card-hover-lift:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            border-color: var(--sport-green);
        }

        .divider {
            height: 1px;
            background: var(--cool-gray);
            border: none;
            margin: 24px 0;
        }

        .divider-light {
            height: 1px;
            background: rgba(255, 255, 255, 0.12);
            border: none;
            margin: 24px 0;
        }

        .section-label {
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--mist-gray);
            display: inline-block;
            margin-bottom: 12px;
        }

        .section-label.green {
            color: #5a7813;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-link.active {
            color: var(--primary-black);
            background: var(--sport-green);
            font-weight: 600;
        }

        .pill-tab {
            display: inline-flex;
            align-items: center;
            padding: 6px 18px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.65);
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: all var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .pill-tab:hover {
            color: #fff;
            border-color: rgba(255, 255, 255, 0.5);
            background: rgba(255, 255, 255, 0.06);
        }

        .pill-tab.active {
            color: var(--primary-black);
            background: var(--sport-green);
            border-color: var(--sport-green);
            font-weight: 600;
        }

        .footer-link {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            transition: color var(--transition-fast);
        }

        .footer-link:hover {
            color: var(--sport-green);
        }

        /* Navigation scrolled state */
        #site-header.scrolled {
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
            background: rgba(14, 17, 19, 0.98) !important;
        }

        /* Mobile drawer */
        .mobile-drawer {
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            width: 88%;
            max-width: 380px;
            background: var(--deep-charcoal);
            z-index: 100;
            transform: translateX(100%);
            transition: transform 0.3s ease;
            padding: 24px 20px 32px;
            overflow-y: auto;
            display: flex;
            flex-direction: column;
            gap: 8px;
            box-shadow: -8px 0 30px rgba(0, 0, 0, 0.4);
        }

        .mobile-drawer.open {
            transform: translateX(0);
        }

        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 99;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }

        .drawer-overlay.show {
            opacity: 1;
            pointer-events: auto;
        }

        .mobile-nav-link {
            display: flex;
            align-items: center;
            padding: 12px 16px;
            border-radius: 10px;
            font-size: 16px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.8);
            transition: all var(--transition-fast);
        }

        .mobile-nav-link:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }

        .mobile-nav-link.active {
            background: var(--sport-green);
            color: var(--primary-black);
            font-weight: 600;
        }

        .mobile-pill-tab {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.25);
            flex-shrink: 0;
            transition: all var(--transition-fast);
        }

        .mobile-pill-tab.active {
            background: var(--sport-green);
            color: var(--primary-black);
            border-color: var(--sport-green);
            font-weight: 600;
        }

        /* Banner section */
        .banner-section {
            position: relative;
            background-size: cover;
            background-position: center;
            padding: 120px 0 56px;
            background-color: var(--primary-black);
            background-image: linear-gradient(180deg, rgba(14,17,19,0.82) 0%, rgba(14,17,19,0.72) 40%, rgba(14,17,19,0.88) 100%), url('/assets/images/backpic/back-2.webp');
        }

        .banner-section::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--sport-green) 0%, transparent 40%, transparent 60%, var(--highlight-cyan) 100%);
        }

        /* Feature card */
        .feature-card {
            display: grid;
            grid-template-columns: 1fr;
            background: #fff;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--cool-gray);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }

        .feature-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            border-color: var(--sport-green);
        }

        .feature-card-image {
            position: relative;
            min-height: 260px;
            background-size: cover;
            background-position: center;
        }

        .feature-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .feature-card-body {
            padding: 28px 28px 24px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .feature-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--mist-gray);
            flex-wrap: wrap;
        }

        .feature-card-title {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.01em;
            color: var(--primary-black);
        }

        .feature-card-desc {
            font-size: 15px;
            line-height: 1.75;
            color: var(--deep-charcoal);
        }

        /* Article card */
        .article-card {
            display: flex;
            flex-direction: column;
            background: #fff;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--cool-gray);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }

        .article-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: var(--sport-green);
        }

        .article-card-image {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            background: var(--cool-gray);
        }

        .article-card-body {
            padding: 20px 20px 18px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }

        .article-card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: var(--mist-gray);
            flex-wrap: wrap;
        }

        .article-card-title {
            font-size: 16px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--primary-black);
            letter-spacing: -0.01em;
            margin: 0;
        }

        .article-card-desc {
            font-size: 14px;
            line-height: 1.7;
            color: var(--mist-gray);
            flex: 1;
        }

        .read-more-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-black);
            transition: all var(--transition-fast);
        }

        .read-more-link:hover {
            color: #5a7813;
            gap: 10px;
        }

        .read-more-link i {
            font-size: 11px;
            transition: transform var(--transition-fast);
        }

        /* Filter bar */
        .filter-bar {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            padding: 16px 0;
            border-bottom: 1px solid var(--cool-gray);
            margin-bottom: 32px;
        }

        .filter-pill {
            display: inline-flex;
            align-items: center;
            padding: 7px 18px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            color: var(--mist-gray);
            border: 1px solid var(--cool-gray);
            background: #fff;
            transition: all var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .filter-pill:hover {
            border-color: var(--sport-green);
            color: var(--primary-black);
            background: rgba(201, 241, 88, 0.08);
        }

        .filter-pill.active {
            background: var(--primary-black);
            color: #fff;
            border-color: var(--primary-black);
            font-weight: 600;
        }

        /* Pagination */
        .pagination {
            display: flex;
            align-items: center;
            gap: 6px;
            justify-content: center;
            margin-top: 40px;
            flex-wrap: wrap;
        }

        .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 14px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 500;
            color: var(--mist-gray);
            border: 1px solid var(--cool-gray);
            background: #fff;
            transition: all var(--transition-fast);
        }

        .page-btn:hover {
            border-color: var(--sport-green);
            color: var(--primary-black);
            background: rgba(201, 241, 88, 0.08);
        }

        .page-btn.active {
            background: var(--primary-black);
            color: #fff;
            border-color: var(--primary-black);
            font-weight: 600;
        }

        .page-btn:disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        /* FAQ */
        .faq-item {
            border: 1px solid var(--cool-gray);
            border-radius: var(--radius-card);
            background: #fff;
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            border-color: var(--warm-metal-gray);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--primary-black);
            user-select: none;
            transition: all var(--transition-fast);
        }

        .faq-question:hover {
            color: #5a7813;
        }

        .faq-question i {
            font-size: 13px;
            transition: transform 0.3s ease;
            color: var(--mist-gray);
            flex-shrink: 0;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--mist-gray);
        }

        .faq-item.open .faq-question i {
            transform: rotate(45deg);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* Depth content */
        .depth-block {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 40px 36px;
            border: 1px solid var(--cool-gray);
            box-shadow: var(--shadow-sm);
        }

        .depth-block h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--primary-black);
            letter-spacing: -0.01em;
        }

        .depth-block p {
            font-size: 15px;
            line-height: 1.9;
            color: var(--deep-charcoal);
            margin-bottom: 16px;
        }

        .depth-block ul {
            list-style: none;
            padding: 0;
            margin: 0 0 16px;
        }

        .depth-block ul li {
            font-size: 15px;
            line-height: 1.8;
            color: var(--deep-charcoal);
            padding-left: 24px;
            position: relative;
            margin-bottom: 10px;
        }

        .depth-block ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 11px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--sport-green);
            border: 2px solid var(--primary-black);
        }

        /* Fade-in animation */
        .fade-in-on-scroll {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }

        .fade-in-on-scroll.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .desktop-nav-menu {
                display: none !important;
            }
            .mobile-nav-toggle {
                display: block !important;
            }
            .heading-h1 {
                font-size: 36px;
            }
            .heading-h2 {
                font-size: 28px;
            }
            .section-spacing {
                padding: 64px 0;
            }
            .banner-section {
                padding: 100px 0 48px;
            }
            .feature-card {
                grid-template-columns: 1fr;
            }
            .feature-card-image {
                min-height: 220px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            .heading-h1 {
                font-size: 30px;
            }
            .heading-h2 {
                font-size: 24px;
            }
            .heading-h3 {
                font-size: 19px;
            }
            .section-spacing {
                padding: 48px 0;
            }
            .banner-section {
                padding: 88px 0 40px;
            }
            .feature-card-title {
                font-size: 20px;
            }
            .feature-card-body {
                padding: 20px 18px 18px;
            }
            .article-card-title {
                font-size: 15px;
            }
            .depth-block {
                padding: 28px 20px;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 15px;
            }
            .btn-lg {
                padding: 14px 28px;
                font-size: 15px;
            }
            .filter-bar {
                gap: 8px;
                padding: 12px 0;
                margin-bottom: 24px;
            }
            .filter-pill {
                padding: 6px 14px;
                font-size: 12px;
            }
            .page-btn {
                min-width: 36px;
                height: 36px;
                padding: 0 10px;
                font-size: 13px;
            }
        }

        @media (max-width: 520px) {
            .heading-h1 {
                font-size: 26px;
            }
            .heading-h2 {
                font-size: 22px;
            }
            .heading-h3 {
                font-size: 18px;
            }
            .banner-section {
                padding: 76px 0 32px;
            }
            .feature-card-title {
                font-size: 18px;
            }
            .feature-card-desc {
                font-size: 14px;
            }
            .article-card-desc {
                font-size: 13px;
            }
            .depth-block h3 {
                font-size: 16px;
            }
            .depth-block p,
            .depth-block ul li {
                font-size: 14px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }
            .btn {
                padding: 10px 22px;
                font-size: 14px;
            }
            .mobile-drawer {
                width: 100%;
                max-width: 100%;
            }
        }

        @media (min-width: 1025px) {
            .mobile-nav-toggle,
            .mobile-drawer,
            .drawer-overlay {
                display: none !important;
            }
            .feature-card {
                grid-template-columns: 1fr 1fr;
            }
            .feature-card-image {
                min-height: 360px;
            }
            .feature-card-body {
                padding: 32px 32px 28px;
            }
            .feature-card-title {
                font-size: 26px;
            }
        }

        @media (min-width: 641px) and (max-width: 1024px) {
            .feature-card {
                grid-template-columns: 1fr;
            }
            .feature-card-image {
                min-height: 280px;
            }
        }

        .desktop-nav-menu {
            display: flex;
        }
        .mobile-nav-toggle {
            display: none;
        }

        @media (max-width: 1024px) {
            .desktop-nav-menu {
                display: none !important;
            }
            .mobile-nav-toggle {
                display: block !important;
            }
        }

/* roulang page: category3 */
:root {
            --primary-black: #0E1113;
            --deep-charcoal: #171B1E;
            --sport-green: #C9F158;
            --porcelain-white: #F5F7F5;
            --cool-gray: #E6EAE7;
            --mist-gray: #5B6660;
            --warm-metal-gray: #9AA39D;
            --highlight-cyan: #2DE0C5;
            --warning-orange: #F2A33C;
            --radius-card: 12px;
            --radius-btn: 999px;
            --radius-label: 999px;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 10px 24px rgba(0, 0, 0, 0.10);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --transition-fast: 150ms ease;
            --transition-base: 200ms ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.85;
            color: var(--deep-charcoal);
            background: var(--porcelain-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img {
            display: block;
            max-width: 100%;
            height: auto;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }
        .section-spacing {
            padding: 88px 0;
        }
        @media (max-width: 640px) {
            .section-spacing {
                padding: 48px 0;
            }
        }
        .heading-h1 {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.22;
            letter-spacing: -0.02em;
            color: #fff;
        }
        @media (max-width: 640px) {
            .heading-h1 {
                font-size: 28px;
            }
        }
        .heading-h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.02em;
            color: var(--primary-black);
        }
        @media (max-width: 640px) {
            .heading-h2 {
                font-size: 24px;
            }
        }
        .heading-h3 {
            font-size: 20px;
            font-weight: 700;
            line-height: 1.35;
            letter-spacing: -0.01em;
            color: var(--primary-black);
        }
        .text-body {
            font-size: 16px;
            line-height: 1.85;
            color: var(--deep-charcoal);
        }
        .text-small {
            font-size: 14px;
            line-height: 1.7;
            color: var(--mist-gray);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            line-height: 1.5;
            transition: all var(--transition-base);
            white-space: nowrap;
            position: relative;
            overflow: hidden;
        }
        .btn:focus-visible {
            outline: 2px solid var(--highlight-cyan);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--sport-green);
            color: var(--primary-black);
        }
        .btn-primary:hover {
            background: #b8e040;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary-black);
            border: 1.5px solid var(--primary-black);
        }
        .btn-outline:hover {
            background: var(--primary-black);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.6);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 16px;
        }
        .label-pill {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: var(--radius-label);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--cool-gray);
            transition: all var(--transition-base);
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            border-color: var(--sport-green);
        }
        .card-hover-lift {
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
        }
        .card-hover-lift:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            border-color: var(--sport-green);
        }
        .divider {
            height: 1px;
            background: var(--cool-gray);
            border: none;
            margin: 24px 0;
        }
        .divider-light {
            height: 1px;
            background: rgba(255, 255, 255, 0.12);
            border: none;
            margin: 24px 0;
        }
        .section-label {
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--mist-gray);
        }
        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            padding: 8px 14px;
            border-radius: 8px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-link.active {
            color: var(--sport-green);
            background: rgba(201, 241, 88, 0.08);
            font-weight: 600;
        }
        .pill-tab {
            font-size: 13px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.65);
            padding: 6px 16px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            transition: all var(--transition-fast);
            white-space: nowrap;
            background: transparent;
        }
        .pill-tab:hover {
            color: #fff;
            border-color: rgba(255, 255, 255, 0.35);
        }
        .pill-tab.active {
            background: var(--sport-green);
            color: var(--primary-black);
            border-color: var(--sport-green);
            font-weight: 600;
        }
        .footer-link {
            color: rgba(255, 255, 255, 0.5);
            font-size: 14px;
            transition: color var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .footer-link:hover {
            color: var(--sport-green);
        }
        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -100%;
            width: 100%;
            max-width: 380px;
            height: 100vh;
            background: var(--primary-black);
            z-index: 60;
            transition: right 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
            overflow-y: auto;
            padding: 24px 20px;
            border-left: 1px solid rgba(255, 255, 255, 0.1);
        }
        .mobile-drawer.open {
            right: 0;
        }
        .drawer-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: rgba(0, 0, 0, 0.5);
            z-index: 55;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }
        .drawer-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }
        .desktop-nav-menu {
            display: flex;
        }
        @media (max-width: 1024px) {
            .desktop-nav-menu {
                display: none;
            }
            .mobile-nav-toggle {
                display: flex !important;
            }
        }
        @media (min-width: 1025px) {
            .mobile-nav-toggle {
                display: none;
            }
        }
        .mobile-nav-toggle {
            display: none;
            align-items: center;
            justify-content: center;
        }
        .league-card-img {
            height: 180px;
            object-fit: cover;
            width: 100%;
            transition: transform 0.4s ease;
        }
        .card:hover .league-card-img {
            transform: scale(1.04);
        }
        .stat-number {
            font-family: "Barlow", "Inter", var(--font-sans);
            font-weight: 700;
            letter-spacing: -0.01em;
            font-size: 34px;
            line-height: 1.1;
        }
        .data-bar {
            height: 6px;
            border-radius: 999px;
            background: var(--cool-gray);
            overflow: hidden;
        }
        .data-bar-fill {
            height: 100%;
            border-radius: 999px;
            background: var(--sport-green);
            transition: width 0.8s ease;
        }
        .faq-item {
            border-bottom: 1px solid var(--cool-gray);
        }
        .faq-question {
            padding: 20px 0;
            font-weight: 600;
            font-size: 16px;
            color: var(--primary-black);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            gap: 16px;
            text-align: left;
            width: 100%;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--mist-gray);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding-bottom 0.35s ease;
            color: var(--mist-gray);
            font-size: 15px;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 20px;
        }
        .faq-icon {
            transition: transform 0.25s ease;
            color: var(--warm-metal-gray);
            flex-shrink: 0;
            font-size: 14px;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        ::selection {
            background: var(--sport-green);
            color: var(--primary-black);
        }
        .hero-overlay {
            background: linear-gradient(180deg, rgba(14,17,19,0.82) 0%, rgba(14,17,19,0.6) 50%, rgba(14,17,19,0.88) 100%);
        }
        .league-filter-bar {
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .league-filter-bar::-webkit-scrollbar {
            display: none;
        }

/* roulang page: category4 */
:root {
            --primary-black: #0E1113;
            --deep-charcoal: #171B1E;
            --sport-green: #C9F158;
            --porcelain-white: #F5F7F5;
            --cool-gray: #E6EAE7;
            --mist-gray: #5B6660;
            --warm-metal-gray: #9AA39D;
            --highlight-cyan: #2DE0C5;
            --warning-orange: #F2A33C;
            --radius-card: 12px;
            --radius-btn: 999px;
            --radius-label: 999px;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 10px 24px rgba(0, 0, 0, 0.10);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --transition-fast: 150ms ease;
            --transition-base: 200ms ease;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.85;
            color: var(--deep-charcoal);
            background: var(--porcelain-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-top: 68px;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-spacing {
            padding: 80px 0;
        }

        .heading-h1 {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--primary-black);
        }

        .heading-h2 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.02em;
            color: var(--primary-black);
        }

        .heading-h3 {
            font-size: 22px;
            font-weight: 700;
            line-height: 1.35;
            letter-spacing: -0.01em;
            color: var(--primary-black);
        }

        .text-body {
            font-size: 16px;
            line-height: 1.85;
            color: var(--deep-charcoal);
        }

        .text-small {
            font-size: 14px;
            line-height: 1.7;
            color: var(--mist-gray);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            line-height: 1.5;
            transition: all var(--transition-base);
            white-space: nowrap;
            position: relative;
            overflow: hidden;
        }

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

        .btn-primary {
            background: var(--sport-green);
            color: var(--primary-black);
        }

        .btn-primary:hover {
            background: #b8e040;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary-black);
            border: 1.5px solid var(--primary-black);
        }

        .btn-outline:hover {
            background: var(--primary-black);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.6);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 16px;
        }

        .label-pill {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: var(--radius-label);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--cool-gray);
            transition: all var(--transition-base);
            overflow: hidden;
        }

        .card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            border-color: var(--sport-green);
        }

        .card-hover-lift {
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
        }

        .card-hover-lift:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            border-color: var(--sport-green);
        }

        .divider {
            height: 1px;
            background: var(--cool-gray);
            border: none;
            margin: 24px 0;
        }

        .divider-light {
            height: 1px;
            background: rgba(255, 255, 255, 0.12);
            border: none;
            margin: 24px 0;
        }

        .section-label {
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--sport-green);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .section-label::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--sport-green);
            border-radius: 1px;
        }

        .nav-link {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-link.active {
            color: var(--sport-green);
            background: rgba(201, 241, 88, 0.12);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--sport-green);
            border-radius: 1px;
        }

        .pill-tab {
            display: inline-flex;
            align-items: center;
            padding: 6px 18px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.6);
            background: rgba(255, 255, 255, 0.06);
            transition: all var(--transition-fast);
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .pill-tab:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.12);
        }

        .pill-tab.active {
            color: var(--primary-black);
            background: var(--sport-green);
            font-weight: 600;
            border-color: var(--sport-green);
        }

        .footer-link {
            color: rgba(255, 255, 255, 0.5);
            font-size: 14px;
            transition: color var(--transition-fast);
        }

        .footer-link:hover {
            color: var(--sport-green);
        }

        .mobile-nav-toggle {
            display: none;
        }

        .desktop-nav-menu {
            display: flex;
        }

        .mobile-drawer {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            width: 320px;
            max-width: 85vw;
            background: var(--deep-charcoal);
            z-index: 100;
            padding: 24px 20px;
            overflow-y: auto;
            transform: translateX(100%);
            transition: transform 250ms ease;
            border-left: 1px solid rgba(255, 255, 255, 0.1);
        }

        .mobile-drawer.open {
            transform: translateX(0);
        }

        .drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 90;
            transition: opacity 250ms ease;
        }

        .drawer-overlay.open {
            display: block;
        }

        .timeline-item {
            position: relative;
            padding-left: 32px;
            padding-bottom: 40px;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 8px;
            bottom: 0;
            width: 2px;
            background: var(--cool-gray);
            border-radius: 1px;
        }

        .timeline-item:last-child::before {
            bottom: 40px;
        }

        .timeline-dot {
            position: absolute;
            left: 0;
            top: 4px;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--sport-green);
            border: 3px solid #fff;
            box-shadow: 0 0 0 2px var(--sport-green);
            z-index: 1;
        }

        .timeline-dot.major {
            background: var(--warning-orange);
            box-shadow: 0 0 0 2px var(--warning-orange);
        }

        .timeline-dot.minor {
            background: #fff;
            border: 3px solid var(--cool-gray);
            box-shadow: 0 0 0 2px var(--cool-gray);
        }

        .tag-version {
            display: inline-flex;
            align-items: center;
            padding: 3px 10px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.03em;
            background: var(--primary-black);
            color: var(--sport-green);
        }

        .tag-announcement {
            display: inline-flex;
            align-items: center;
            padding: 3px 10px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(242, 163, 60, 0.15);
            color: #d6892b;
        }

        .tag-feature {
            display: inline-flex;
            align-items: center;
            padding: 3px 10px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(45, 224, 197, 0.12);
            color: #1caa93;
        }

        .tag-maintenance {
            display: inline-flex;
            align-items: center;
            padding: 3px 10px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(155, 163, 157, 0.2);
            color: #5b6660;
        }

        .stat-number {
            font-size: 36px;
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.1;
            color: var(--primary-black);
        }

        .stat-number .highlight {
            color: var(--highlight-cyan);
        }

        .fade-in-up {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 500ms ease, transform 500ms ease;
        }

        .fade-in-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
            .section-spacing {
                padding: 64px 0;
            }
            .heading-h1 {
                font-size: 38px;
            }
            .heading-h2 {
                font-size: 28px;
            }
            .heading-h3 {
                font-size: 20px;
            }
        }

        @media (max-width: 768px) {
            body {
                padding-top: 60px;
            }
            .container {
                padding: 0 16px;
            }
            .section-spacing {
                padding: 48px 0;
            }
            .heading-h1 {
                font-size: 30px;
            }
            .heading-h2 {
                font-size: 25px;
            }
            .heading-h3 {
                font-size: 19px;
            }
            .desktop-nav-menu {
                display: none !important;
            }
            .mobile-nav-toggle {
                display: inline-flex;
            }
            .btn-lg {
                padding: 14px 28px;
                font-size: 15px;
            }
        }

        @media (max-width: 520px) {
            .heading-h1 {
                font-size: 26px;
            }
            .heading-h2 {
                font-size: 22px;
            }
            .heading-h3 {
                font-size: 18px;
            }
            .stat-number {
                font-size: 28px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
            .btn-sm {
                padding: 7px 14px;
                font-size: 12px;
            }
        }

/* roulang page: category5 */
:root {
            --primary-black: #0E1113;
            --deep-charcoal: #171B1E;
            --sport-green: #C9F158;
            --porcelain-white: #F5F7F5;
            --cool-gray: #E6EAE7;
            --mist-gray: #5B6660;
            --warm-metal-gray: #9AA39D;
            --highlight-cyan: #2DE0C5;
            --warning-orange: #F2A33C;
            --radius-card: 12px;
            --radius-btn: 999px;
            --radius-label: 999px;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 10px 24px rgba(0, 0, 0, 0.10);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --transition-fast: 150ms ease;
            --transition-base: 200ms ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.85;
            color: var(--deep-charcoal);
            background: var(--porcelain-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img {
            display: block;
            max-width: 100%;
            height: auto;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-spacing {
            padding: 72px 0;
        }
        .heading-h1 {
            font-size: 46px;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--primary-black);
        }
        .heading-h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.02em;
            color: var(--primary-black);
        }
        .heading-h3 {
            font-size: 21px;
            font-weight: 700;
            line-height: 1.35;
            letter-spacing: -0.01em;
            color: var(--primary-black);
        }
        .text-body {
            font-size: 16px;
            line-height: 1.85;
            color: var(--deep-charcoal);
        }
        .text-small {
            font-size: 14px;
            line-height: 1.7;
            color: var(--mist-gray);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            line-height: 1.5;
            transition: all var(--transition-base);
            white-space: nowrap;
            position: relative;
            overflow: hidden;
        }
        .btn:focus-visible {
            outline: 2px solid var(--highlight-cyan);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--sport-green);
            color: var(--primary-black);
        }
        .btn-primary:hover {
            background: #b8e040;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary-black);
            border: 1.5px solid var(--primary-black);
        }
        .btn-outline:hover {
            background: var(--primary-black);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.6);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 16px;
        }
        .label-pill {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: var(--radius-label);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--cool-gray);
            transition: all var(--transition-base);
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            border-color: var(--sport-green);
        }
        .card-hover-lift {
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
        }
        .card-hover-lift:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            border-color: var(--sport-green);
        }
        .divider {
            height: 1px;
            background: var(--cool-gray);
            border: none;
            margin: 24px 0;
        }
        .divider-light {
            height: 1px;
            background: rgba(255, 255, 255, 0.12);
            border: none;
            margin: 24px 0;
        }
        .section-label {
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--mist-gray);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .section-label::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--sport-green);
            display: inline-block;
        }
        .nav-link {
            color: rgba(255, 255, 255, 0.72);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 999px;
            transition: color var(--transition-fast), background var(--transition-fast);
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-link.active {
            color: var(--primary-black);
            background: var(--sport-green);
            font-weight: 700;
        }
        .pill-tab {
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.72);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .pill-tab:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.12);
        }
        .pill-tab.active {
            color: var(--primary-black);
            background: var(--sport-green);
            border-color: var(--sport-green);
            font-weight: 700;
        }
        .footer-link {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            transition: color var(--transition-fast);
        }
        .footer-link:hover {
            color: var(--sport-green);
        }
        .drawer {
            position: fixed;
            top: 0;
            right: -100%;
            width: min(85vw, 360px);
            height: 100vh;
            background: var(--primary-black);
            z-index: 100;
            transition: right 0.3s ease;
            padding: 24px 20px;
            overflow-y: auto;
            border-left: 1px solid rgba(255, 255, 255, 0.08);
        }
        .drawer.open {
            right: 0;
        }
        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 90;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }
        .drawer-overlay.open {
            opacity: 1;
            pointer-events: auto;
        }
        .desktop-nav-menu {
            display: none;
        }
        @media (min-width: 1024px) {
            .desktop-nav-menu {
                display: flex;
            }
            .mobile-nav-toggle {
                display: none !important;
            }
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
            .section-spacing {
                padding: 48px 0;
            }
            .heading-h1 {
                font-size: 30px;
            }
            .heading-h2 {
                font-size: 26px;
            }
            .heading-h3 {
                font-size: 19px;
            }
        }
        .guide-step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary-black);
            color: var(--sport-green);
            font-weight: 800;
            font-size: 16px;
            flex-shrink: 0;
        }
        .guide-card {
            background: #fff;
            border: 1px solid var(--cool-gray);
            border-radius: var(--radius-card);
            padding: 24px;
            transition: all var(--transition-base);
        }
        .guide-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            border-color: var(--sport-green);
        }
        .accordion-item {
            border-bottom: 1px solid var(--cool-gray);
        }
        .accordion-trigger {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 0;
            text-align: left;
            font-weight: 700;
            color: var(--primary-black);
            font-size: 17px;
            transition: color var(--transition-fast);
        }
        .accordion-trigger:hover {
            color: var(--mist-gray);
        }
        .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            color: var(--deep-charcoal);
            font-size: 15px;
            line-height: 1.8;
        }
        .accordion-item.active .accordion-content {
            max-height: 300px;
            padding: 0 0 18px;
        }
        .accordion-item.active .accordion-trigger i {
            transform: rotate(180deg);
        }
        .accordion-trigger i {
            transition: transform 0.3s ease;
            color: var(--mist-gray);
            font-size: 14px;
        }

/* roulang page: category6 */
/* roulang page category6: 安全与责任 */
        :root {
            --primary-black: #0E1113;
            --deep-charcoal: #171B1E;
            --sport-green: #C9F158;
            --porcelain-white: #F5F7F5;
            --cool-gray: #E6EAE7;
            --mist-gray: #5B6660;
            --warm-metal-gray: #9AA39D;
            --highlight-cyan: #2DE0C5;
            --warning-orange: #F2A33C;
            --radius-card: 12px;
            --radius-btn: 999px;
            --radius-label: 999px;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 10px 24px rgba(0, 0, 0, 0.10);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --transition-fast: 150ms ease;
            --transition-base: 200ms ease;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.85;
            color: var(--deep-charcoal);
            background: var(--porcelain-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-top: 68px;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        .section-spacing {
            padding: 96px 0;
        }

        @media (max-width: 640px) {
            .section-spacing {
                padding: 48px 0;
            }
        }

        .heading-h1 {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--primary-black);
        }

        .heading-h2 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.02em;
            color: var(--primary-black);
        }

        .heading-h3 {
            font-size: 22px;
            font-weight: 700;
            line-height: 1.35;
            letter-spacing: -0.01em;
            color: var(--primary-black);
        }

        @media (max-width: 640px) {
            .heading-h1 {
                font-size: 30px;
            }
            .heading-h2 {
                font-size: 26px;
            }
            .heading-h3 {
                font-size: 19px;
            }
        }

        .text-body {
            font-size: 16px;
            line-height: 1.85;
            color: var(--deep-charcoal);
        }

        .text-small {
            font-size: 14px;
            line-height: 1.7;
            color: var(--mist-gray);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            line-height: 1.5;
            transition: all var(--transition-base);
            white-space: nowrap;
            position: relative;
            overflow: hidden;
        }

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

        .btn-primary {
            background: var(--sport-green);
            color: var(--primary-black);
        }
        .btn-primary:hover {
            background: #b8e040;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary-black);
            border: 1.5px solid var(--primary-black);
        }
        .btn-outline:hover {
            background: var(--primary-black);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.6);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 16px;
        }

        .label-pill {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: var(--radius-label);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--cool-gray);
            transition: all var(--transition-base);
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            border-color: var(--sport-green);
        }

        .divider {
            height: 1px;
            background: var(--cool-gray);
            border: none;
            margin: 24px 0;
        }
        .divider-light {
            height: 1px;
            background: rgba(255, 255, 255, 0.12);
            border: none;
            margin: 24px 0;
        }

        .section-label {
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--mist-gray);
            margin-bottom: 12px;
            display: inline-block;
        }

        /* Navigation */
        #site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            transition: all 300ms ease;
            background: rgba(14, 17, 19, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        #site-header.scrolled {
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
            background: rgba(14, 17, 19, 0.98);
        }

        .nav-link {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-link.active {
            color: var(--sport-green);
            background: rgba(201, 241, 88, 0.12);
        }

        .pill-tab {
            color: rgba(255, 255, 255, 0.55);
            font-size: 12px;
            font-weight: 500;
            padding: 6px 16px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .pill-tab:hover {
            color: #fff;
            border-color: rgba(255, 255, 255, 0.4);
            background: rgba(255, 255, 255, 0.06);
        }
        .pill-tab.active {
            color: var(--primary-black);
            background: var(--sport-green);
            border-color: var(--sport-green);
            font-weight: 600;
        }

        .mobile-nav-toggle {
            display: none;
        }

        @media (max-width: 1024px) {
            .desktop-nav-menu {
                display: none !important;
            }
            .mobile-nav-toggle {
                display: block;
            }
        }

        /* Mobile drawer */
        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -100%;
            width: 100%;
            max-width: 360px;
            height: 100vh;
            background: var(--primary-black);
            z-index: 100;
            transition: right 300ms ease;
            overflow-y: auto;
            padding: 24px 20px;
            box-shadow: -12px 0 40px rgba(0, 0, 0, 0.4);
        }
        .mobile-drawer.open {
            right: 0;
        }
        .mobile-drawer-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 90;
            opacity: 0;
            pointer-events: none;
            transition: opacity 300ms ease;
        }
        .mobile-drawer-overlay.open {
            opacity: 1;
            pointer-events: auto;
        }

        /* Hero for category page */
        .category-hero {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            background-size: cover;
            background-position: center;
            background-image: url('/assets/images/backpic/back-2.webp');
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(14, 17, 19, 0.85) 0%, rgba(14, 17, 19, 0.92) 100%);
        }

        /* Blockquote */
        .safety-quote {
            background: var(--deep-charcoal);
            border-left: 4px solid var(--warning-orange);
            border-radius: 0 12px 12px 0;
            padding: 24px 32px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 15px;
            line-height: 1.8;
            margin: 24px 0;
        }
        .safety-quote .quote-source {
            display: block;
            margin-top: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
            letter-spacing: 0.03em;
        }

        /* Step list */
        .step-item {
            display: flex;
            gap: 16px;
            padding: 20px 0;
            border-bottom: 1px solid var(--cool-gray);
        }
        .step-item:last-child {
            border-bottom: none;
        }
        .step-num {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-black);
            color: var(--sport-green);
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }

        /* FAQ Accordion */
        .faq-item {
            border: 1px solid var(--cool-gray);
            border-radius: var(--radius-card);
            background: #fff;
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--sport-green);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 15px;
            color: var(--primary-black);
            text-align: left;
            gap: 16px;
            cursor: pointer;
            transition: background var(--transition-fast);
        }
        .faq-question:hover {
            background: var(--porcelain-white);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            transition: transform var(--transition-base);
            color: var(--mist-gray);
            font-size: 14px;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            color: var(--sport-green);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms ease;
        }
        .faq-item.open .faq-answer {
            max-height: 500px;
        }
        .faq-answer-inner {
            padding: 0 24px 20px;
            color: var(--mist-gray);
            font-size: 14px;
            line-height: 1.8;
        }

        /* Footer */
        .footer-link {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            transition: color var(--transition-fast);
        }
        .footer-link:hover {
            color: var(--sport-green);
        }

        /* Info card for safety */
        .safety-info-card {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--cool-gray);
            padding: 24px;
            transition: all var(--transition-base);
        }
        .safety-info-card:hover {
            border-color: var(--warning-orange);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        /* CTA band */
        .cta-band {
            background: var(--primary-black);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            position: relative;
            overflow: hidden;
        }
        .cta-band::after {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(201, 241, 88, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        /* Inline code / tag */
        .inline-tag {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .inline-tag-warning {
            background: rgba(242, 163, 60, 0.15);
            color: var(--warning-orange);
        }
        .inline-tag-safe {
            background: rgba(45, 224, 197, 0.12);
            color: #1aa58e;
        }

        @media (max-width: 640px) {
            .category-hero {
                min-height: 320px;
                padding-top: 40px;
                padding-bottom: 40px;
            }
            .cta-band {
                padding: 32px 20px;
            }
            .safety-quote {
                padding: 18px 20px;
                font-size: 14px;
            }
        }