/* roulang page: index */
:root {
            --primary: #C8FF2E;
            --primary-dark: #b0e623;
            --bg-page: #F6F6F0;
            --bg-dark: #0C0E0B;
            --text-main: #141613;
            --text-sub: #6C6F66;
            --text-on-dark: #ECEEE6;
            --border-light: rgba(12, 14, 11, 0.12);
            --border-dark: rgba(236, 238, 230, 0.16);
            --radius-card: 18px;
            --radius-btn: 999px;
            --radius-badge: 6px;
            --shadow-card: 0 10px 40px rgba(12, 14, 11, 0.06);
            --shadow-hover: 0 18px 60px rgba(12, 14, 11, 0.12);
            --font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background: var(--bg-page);
            color: var(--text-main);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            font-size: 1rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            cursor: pointer;
            border: 2px solid transparent;
            transition: all 0.3s ease;
            line-height: 1.2;
        }

        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .btn-primary {
            background: var(--primary);
            color: var(--text-main);
        }

        .btn-primary:hover {
            background: #fff;
            border-color: var(--primary);
            color: var(--text-main);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: translateY(1px);
        }

        .btn-dark {
            background: var(--bg-dark);
            color: #fff;
            border-color: var(--bg-dark);
        }

        .btn-dark:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: var(--text-main);
            transform: translateY(-2px);
        }

        .btn-dark:active {
            transform: translateY(1px);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.5);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: translateY(1px);
        }

        .btn-sm {
            padding: 10px 24px;
            font-size: 0.875rem;
        }

        .btn-lg {
            padding: 18px 48px;
            font-size: 1.125rem;
        }

        .btn-block {
            width: 100%;
        }

        @media (max-width: 768px) {
            .btn {
                padding: 14px 24px;
                font-size: 0.9375rem;
            }
            .btn-lg {
                padding: 16px 36px;
                font-size: 1rem;
            }
        }

        /* ===== 标签 / 徽章 ===== */
        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            background: rgba(12, 14, 11, 0.06);
            color: var(--text-main);
            text-transform: uppercase;
        }

        .tag-primary {
            background: rgba(200, 255, 46, 0.2);
            color: var(--text-main);
            border: 1px solid rgba(200, 255, 46, 0.5);
        }

        /* ===== 导航 ===== */
        .site-header {
            background: var(--bg-page);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 20px rgba(12, 14, 11, 0.03);
        }

        .site-header::before {
            content: '';
            display: block;
            height: 3px;
            background: var(--primary);
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .brand {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .brand-dot {
            width: 8px;
            height: 8px;
            background: var(--primary);
            border-radius: 50%;
            display: inline-block;
        }

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

        .nav-links a {
            padding: 8px 16px;
            font-weight: 600;
            font-size: 0.9375rem;
            color: var(--text-main);
            border-radius: var(--radius-btn);
            position: relative;
        }

        .nav-links a:hover {
            color: var(--text-main);
            background: rgba(12, 14, 11, 0.05);
        }

        .nav-links a.active {
            color: var(--text-main);
            background: rgba(200, 255, 46, 0.3);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            transform: scaleX(1);
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
        }

        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--bg-page);
            z-index: 99;
            padding: 96px 24px 32px;
            flex-direction: column;
            gap: 8px;
            transform: translateY(-100%);
            transition: transform 0.4s cubic-bezier(0.77, 0, 0.175, 1);
            overflow-y: auto;
        }

        .mobile-nav.open {
            transform: translateY(0);
        }

        .mobile-nav a {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-main);
            padding: 12px 0;
            border-bottom: 1px solid var(--border-light);
            letter-spacing: -0.02em;
        }

        .mobile-nav a.active {
            color: var(--text-main);
        }

        .mobile-nav a.active::before {
            content: '● ';
            color: var(--primary);
        }

        .mobile-nav .btn {
            margin-top: 32px;
        }

        @media (max-width: 900px) {
            .nav-links {
                display: none;
            }
            .nav-cta .btn {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .mobile-nav {
                display: flex;
            }
        }

        /* ===== Hero ===== */
        .hero {
            background: var(--bg-dark);
            color: var(--text-on-dark);
            position: relative;
            overflow: hidden;
            min-height: 92vh;
            display: flex;
            align-items: center;
            padding: 80px 0;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: 0.35;
            z-index: 0;
        }

        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 80% 20%, rgba(200, 255, 46, 0.12), transparent 60%);
            z-index: 1;
            pointer-events: none;
        }

        .hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.875rem;
            letter-spacing: 0.1em;
            color: rgba(236, 238, 230, 0.7);
            margin-bottom: 24px;
            border: 1px solid rgba(236, 238, 230, 0.2);
            padding: 6px 16px;
            border-radius: var(--radius-btn);
        }

        .hero-tag i {
            color: var(--primary);
        }

        .hero h1 {
            font-size: clamp(2.75rem, 7vw, 5.5rem);
            font-weight: 800;
            line-height: 1.05;
            letter-spacing: -0.02em;
            margin-bottom: 24px;
            max-width: 900px;
        }

        .hero h1 .highlight {
            color: var(--primary);
        }

        .hero-sub {
            font-size: clamp(1rem, 2vw, 1.25rem);
            color: rgba(236, 238, 230, 0.75);
            max-width: 560px;
            margin-bottom: 40px;
            line-height: 1.7;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .hero-scroll {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 2;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            color: rgba(236, 238, 230, 0.5);
            font-size: 0.75rem;
        }

        .hero-scroll-line {
            width: 2px;
            height: 36px;
            background: rgba(236, 238, 230, 0.3);
            border-radius: 2px;
            overflow: hidden;
            position: relative;
        }

        .hero-scroll-line::after {
            content: '';
            position: absolute;
            top: -50%;
            left: 0;
            width: 100%;
            height: 50%;
            background: var(--primary);
            animation: scrollLine 1.5s ease-in-out infinite;
        }

        @keyframes scrollLine {
            0% { top: -50%; }
            100% { top: 100%; }
        }
        
        @media (max-width: 768px) {
            .hero {
                min-height: auto;
                padding: 60px 0 80px;
            }
            .hero h1 {
                font-size: clamp(2.25rem, 9vw, 3.5rem);
            }
        }

        /* ===== 倒计时 ===== */
        .countdown-section {
            background: var(--bg-dark);
            padding-bottom: 56px;
            margin-top: -1px;
        }

        .countdown-inner {
            background: rgba(12, 14, 11, 0.6);
            border: 1px solid var(--border-dark);
            border-radius: 24px;
            padding: 32px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            backdrop-filter: blur(4px);
        }

        .countdown-label {
            color: rgba(236, 238, 230, 0.7);
            font-size: 0.9375rem;
            letter-spacing: 0.05em;
        }

        .countdown-label strong {
            color: var(--primary);
            font-weight: 700;
        }

        .countdown-grid {
            display: flex;
            gap: 16px;
            align-items: center;
        }

        .countdown-item {
            text-align: center;
            padding: 12px 16px;
            border-radius: 16px;
            background: rgba(255, 255, 255, 0.05);
            min-width: 76px;
            transition: transform 0.3s ease, background 0.3s ease;
            opacity: 0;
            transform: translateY(20px);
            animation: fadeUp 0.6s ease forwards;
        }

        .countdown-item:nth-child(1) { animation-delay: 0.1s; }
        .countdown-item:nth-child(2) { animation-delay: 0.2s; }
        .countdown-item:nth-child(3) { animation-delay: 0.3s; }
        .countdown-item:nth-child(4) { animation-delay: 0.4s; }

        .countdown-item:hover {
            transform: translateY(-2px);
            background: rgba(200, 255, 46, 0.08);
        }

        .countdown-item .num {
            font-size: 2.25rem;
            font-weight: 800;
            color: #fff;
            font-feature-settings: "tnum";
            line-height: 1;
        }

        .countdown-item .unit {
            font-size: 0.75rem;
            color: rgba(236, 238, 230, 0.5);
            margin-top: 4px;
            letter-spacing: 0.1em;
        }

        .countdown-sep {
            color: rgba(236, 238, 230, 0.2);
            font-size: 1.5rem;
            font-weight: 300;
        }

        @keyframes fadeUp {
            0% { opacity: 0; transform: translateY(20px); }
            100% { opacity: 1; transform: translateY(0); }
        }

        @media (max-width: 768px) {
            .countdown-inner {
                flex-direction: column;
                gap: 16px;
                padding: 24px;
            }
            .countdown-grid {
                gap: 8px;
            }
            .countdown-item {
                min-width: 60px;
                padding: 10px 8px;
            }
            .countdown-item .num {
                font-size: 1.5rem;
            }
            .countdown-sep {
                display: none;
            }
        }

        /* ===== 通用区块 ===== */
        .section {
            padding: 96px 0;
        }

        .section-sm {
            padding: 64px 0;
        }

        .section-title {
            font-size: clamp(2rem, 4vw, 3.25rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.15;
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 1.0625rem;
            color: var(--text-sub);
            line-height: 1.7;
            max-width: 640px;
        }

        .section-head {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 32px;
            margin-bottom: 48px;
            flex-wrap: wrap;
        }

        .section-head-left {
            max-width: 700px;
        }

        .section-tag {
            display: inline-block;
            background: rgba(200, 255, 46, 0.3);
            color: var(--text-main);
            padding: 4px 14px;
            border-radius: var(--radius-btn);
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.1em;
            margin-bottom: 16px;
        }

        .section-h2 {
            font-size: clamp(1.5rem, 3vw, 2.5rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }

        .section-h2 .bar {
            display: inline-block;
            width: 4px;
            height: 24px;
            background: var(--primary);
            border-radius: 2px;
            margin-right: 12px;
            vertical-align: -3px;
        }

        .section-desc {
            color: var(--text-sub);
        }

        /* ===== 卖点 ===== */
        .feature-list {
            border-top: 1px solid var(--border-light);
        }

        .feature-row {
            display: flex;
            align-items: flex-start;
            gap: 40px;
            padding: 48px 0;
            border-bottom: 1px solid var(--border-light);
            transition: background 0.3s ease;
        }

        .feature-row:hover {
            background: rgba(200, 255, 46, 0.03);
        }

        .feature-num {
            font-size: 3.5rem;
            font-weight: 800;
            color: rgba(12, 14, 11, 0.08);
            line-height: 1;
            min-width: 96px;
            font-feature-settings: "tnum";
            transition: color 0.3s ease;
        }

        .feature-row:hover .feature-num {
            color: var(--primary);
        }

        .feature-body h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }

        .feature-body p {
            font-size: 1rem;
            color: var(--text-sub);
            line-height: 1.7;
            max-width: 680px;
        }

        @media (max-width: 768px) {
            .feature-row {
                flex-direction: column;
                gap: 16px;
                padding: 32px 0;
            }
            .feature-num {
                font-size: 2.25rem;
                min-width: auto;
            }
        }

        /* ===== 图墙 ===== */
        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 20px;
        }

        .gallery-item {
            border-radius: var(--radius-card);
            overflow: hidden;
            position: relative;
            cursor: pointer;
            aspect-ratio: 1/1;
        }

        .gallery-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .gallery-item:hover img {
            transform: scale(1.03);
        }

        .gallery-item::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(12, 14, 11, 0.7), transparent 70%);
            opacity: 0.7;
            transition: opacity 0.3s ease;
            z-index: 1;
        }

        .gallery-item:hover::after {
            opacity: 0.9;
        }

        .gallery-item .g-tag {
            position: absolute;
            bottom: 16px;
            left: 16px;
            z-index: 2;
            background: rgba(12, 14, 11, 0.6);
            color: var(--text-on-dark);
            padding: 6px 14px;
            border-radius: var(--radius-btn);
            font-size: 0.8125rem;
            font-weight: 600;
            border: 1px solid rgba(236, 238, 230, 0.2);
            backdrop-filter: blur(4px);
        }

        .g1 { grid-column: span 3; aspect-ratio: 16/10; }
        .g2 { grid-column: span 3; aspect-ratio: 16/10; }
        .g3 { grid-column: span 2; }
        .g4 { grid-column: span 2; }
        .g5 { grid-column: span 2; }

        @media (max-width: 1024px) {
            .gallery-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .g1 { grid-column: span 3; aspect-ratio: 16/9; }
            .g2 { grid-column: span 3; aspect-ratio: 16/9; }
            .g3 { grid-column: span 1; }
            .g4 { grid-column: span 1; }
            .g5 { grid-column: span 1; }
        }

        @media (max-width: 640px) {
            .gallery-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .g1 { grid-column: span 2; aspect-ratio: 4/3; }
            .g2 { grid-column: span 2; aspect-ratio: 4/3; }
            .g3 { grid-column: span 1; }
            .g4 { grid-column: span 1; }
            .g5 { grid-column: span 1; }
        }

        /* ===== CTA 横幅 ===== */
        .cta-banner {
            background: var(--bg-dark);
            color: var(--text-on-dark);
            padding: 100px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(200, 255, 46, 0.15), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .cta-title {
            font-size: clamp(2rem, 5vw, 3.5rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }

        .cta-sub {
            color: rgba(236, 238, 230, 0.7);
            font-size: 1.0625rem;
            margin-bottom: 40px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .cta-note {
            margin-top: 24px;
            font-size: 0.8125rem;
            color: rgba(236, 238, 230, 0.4);
        }

        /* ===== 最新资讯 ===== */
        .news-section {
            background: var(--bg-page);
        }

        .news-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .news-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            border: 1px solid rgba(12, 14, 11, 0.04);
            display: flex;
            flex-direction: column;
        }

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

        .news-card-top {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .news-time {
            font-size: 0.8125rem;
            color: var(--text-sub);
            font-feature-settings: "tnum";
        }

        .news-tag {
            background: rgba(200, 255, 46, 0.25);
            color: var(--text-main);
            padding: 2px 10px;
            border-radius: var(--radius-badge);
            font-size: 0.75rem;
            font-weight: 700;
        }

        .news-card h3 {
            font-size: 1.125rem;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }

        .news-card p {
            font-size: 0.9375rem;
            color: var(--text-sub);
            line-height: 1.65;
            flex: 1;
            margin-bottom: 16px;
        }

        .news-card .news-arrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--text-main);
        }

        .news-card .news-arrow i {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(12, 14, 11, 0.06);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }

        .news-card:hover .news-arrow i {
            background: var(--primary);
            transform: translateX(2px);
        }

        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 24px;
            border: 2px dashed var(--border-light);
            border-radius: var(--radius-card);
            background: rgba(255, 255, 255, 0.5);
        }

        .news-empty .empty-icon {
            font-size: 3rem;
            color: var(--border-light);
            margin-bottom: 16px;
        }

        .news-empty p {
            font-size: 1rem;
            color: var(--text-sub);
        }

        @media (max-width: 768px) {
            .news-list {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border-radius: 16px;
            padding: 24px 28px;
            margin-bottom: 16px;
            border: 1px solid rgba(12, 14, 11, 0.08);
            box-shadow: 0 4px 20px rgba(12, 14, 11, 0.03);
            transition: border-color 0.3s ease;
        }

        .faq-item.open {
            border-color: rgba(200, 255, 46, 0.5);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 700;
            font-size: 1.0625rem;
            color: var(--text-main);
        }

        .faq-question .icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1.5px solid var(--border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
            font-size: 0.75rem;
            color: var(--text-sub);
        }

        .faq-item.open .faq-question .icon {
            background: var(--primary);
            border-color: var(--primary);
            color: var(--text-main);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            color: var(--text-sub);
            font-size: 0.9375rem;
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding-top: 16px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-on-dark);
            padding: 64px 0 32px;
        }

        .site-footer::before {
            content: '';
            display: block;
            height: 3px;
            background: var(--primary);
            margin-bottom: 48px;
        }

        .footer-top {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }

        .footer-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-on-dark);
        }

        .footer-links {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }

        .footer-links a {
            color: rgba(236, 238, 230, 0.7);
            font-size: 0.9375rem;
            font-weight: 500;
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-dark);
            padding-top: 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 0.8125rem;
            color: rgba(236, 238, 230, 0.4);
        }

        .footer-bottom a {
            color: rgba(236, 238, 230, 0.6);
        }

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

        @media (max-width: 768px) {
            .footer-top {
                flex-direction: column;
                gap: 24px;
            }
            .footer-links {
                gap: 16px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* ===== 焦点样式 ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

/* roulang page: category1 */
:root {
            --primary: #C8FF2E;
            --primary-dark: #b4e626;
            --bg: #F6F6F0;
            --dark: #0C0E0B;
            --heading: #141613;
            --body: #3a3d36;
            --muted: #6C6F66;
            --border: rgba(12, 14, 11, 0.12);
            --accent: #FF6A00;
            --radius-lg: 18px;
            --radius-btn: 999px;
            --radius-badge: 6px;
            --shadow-card: 0 10px 40px rgba(12, 14, 11, 0.06);
            --shadow-hover: 0 18px 60px rgba(12, 14, 11, 0.12);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--body);
            line-height: 1.75;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        button {
            border: none;
            background: none;
            cursor: pointer;
    }
        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 导航 */
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }
        .logo {
            font-size: 1.35rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--heading);
            white-space: nowrap;
            line-height: 1.2;
        }
        .logo em {
            font-style: normal;
            color: var(--primary-dark);
        }
        .nav-links {
            display: flex;
            gap: 32px;
            align-items: center;
            margin: 0 auto;
        }
        .nav-links a {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--heading);
            position: relative;
            padding: 4px 0;
            transition: color 0.2s;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 100%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s;
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            transform: scaleX(1);
        }
        .nav-links a:hover {
            color: var(--dark);
        }
        .nav-links a.active {
            color: var(--dark);
            font-weight: 700;
        }
        .nav-cta {
            background: var(--dark);
            color: #fff !important;
            border-radius: var(--radius-btn);
            padding: 8px 24px;
            font-size: 0.9rem;
            font-weight: 600;
            transition: all 0.25s;
            white-space: nowrap;
        }
        .nav-cta::after {
            display: none;
        }
        .nav-cta:hover {
            background: var(--primary);
            color: var(--dark) !important;
            transform: translateY(-1px);
        }
        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            z-index: 102;
            position: relative;
        }
        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--dark);
            border-radius: 2px;
            transition: all 0.3s;
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Hero */
        .category-hero {
            background: var(--dark);
            color: #fff;
            padding: 110px 0 90px;
            position: relative;
            min-height: 40vh;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            opacity: 0.2;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 80% 20%, rgba(200, 255, 46, 0.12), transparent 55%);
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .category-hero h1 {
            font-size: clamp(2.4rem, 5vw, 4rem);
            font-weight: 800;
            line-height: 1.1;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
            color: #fff;
        }
        .category-hero h1 em {
            font-style: normal;
            color: var(--primary);
        }
        .category-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 640px;
            line-height: 1.7;
            margin-bottom: 32px;
        }
        .hero-meta {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            margin-bottom: 36px;
        }
        .hero-meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.65);
        }
        .hero-meta-item strong {
            font-size: 1.3rem;
            color: var(--primary);
            font-feature-settings: "tnum";
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            padding: 12px 32px;
            font-size: 0.95rem;
            font-weight: 700;
            transition: all 0.25s;
            line-height: 1.2;
            border: 1.5px solid transparent;
        }
        .btn-primary {
            background: var(--primary);
            color: var(--dark);
        }
        .btn-primary:hover {
            background: #fff;
            color: var(--dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(200, 255, 46, 0.2);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.3);
            color: #fff;
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-dark {
            background: var(--dark);
            color: var(--primary);
            border-color: var(--dark);
        }
        .btn-dark:hover {
            background: var(--primary);
            color: var(--dark);
            transform: translateY(-2px);
        }
        .btn:focus-visible,
        .nav-links a:focus-visible,
        .card-link:focus-visible,
        .other-cat-btn:focus-visible,
        .faq-q:focus-visible {
            outline: 3px solid rgba(200, 255, 46, 0.5);
            outline-offset: 3px;
        }

        /* 区块通用 */
        .section {
            padding: 88px 0;
        }
        .section-white {
            background: #fff;
        }
        .section-head {
            margin-bottom: 56px;
        }
        .section-title {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 800;
            color: var(--heading);
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--muted);
            max-width: 640px;
            line-height: 1.7;
        }
        .section-dash {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }
        .section-dash::before {
            content: '';
            width: 4px;
            height: 24px;
            background: var(--primary);
            border-radius: 4px;
        }
        .section-dash span {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--muted);
            letter-spacing: 0.08em;
            text-transform: uppercase;
        }

        /* 卖点 */
        .feature-list {
            margin-top: 0;
        }
        .feature-item {
            display: flex;
            gap: 48px;
            padding: 48px 0;
            border-bottom: 1px solid var(--border);
            align-items: flex-start;
        }
        .feature-item:last-child {
            border-bottom: none;
        }
        .feature-num {
            font-size: 3rem;
            font-weight: 800;
            font-feature-settings: "tnum";
            color: var(--primary-dark);
            min-width: 120px;
            line-height: 1;
            transition: color 0.2s;
        }
        .feature-item:hover .feature-num {
            color: var(--dark);
        }
        .feature-content {
            max-width: 720px;
        }
        .feature-content h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--heading);
            margin-bottom: 8px;
        }
        .feature-content p {
            color: var(--muted);
            line-height: 1.75;
        }

        /* 卡片网格 */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 0;
        }
        .card-item {
            background: var(--bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.3s, transform 0.3s;
            display: flex;
            flex-direction: column;
        }
        .card-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        .card-item:hover .card-img img {
            transform: scale(1.04);
        }
        .card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(12, 14, 11, 0.15), transparent 60%);
        }
        .card-body {
            padding: 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--heading);
            margin-bottom: 8px;
        }
        .card-body p {
            font-size: 0.95rem;
            color: var(--muted);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .card-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 16px;
        }
        .card-tag {
            background: rgba(200, 255, 46, 0.2);
            color: #556b2f;
            border-radius: var(--radius-badge);
            padding: 3px 10px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .card-link {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--dark);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color 0.2s;
        }
        .card-link:hover {
            color: var(--primary-dark);
            gap: 10px;
        }
        .card-link .arrow {
            transition: transform 0.2s;
        }
        .card-link:hover .arrow {
            transform: translateX(4px);
        }

        /* 流程 */
        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-card {
            background: var(--bg);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            border: 1px solid var(--border);
            position: relative;
            transition: box-shadow 0.3s, transform 0.3s;
        }
        .step-card:hover {
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
        }
        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--dark);
            color: var(--primary);
            font-weight: 800;
            font-size: 1.1rem;
            margin-bottom: 20px;
            font-feature-settings: "tnum";
        }
        .step-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--heading);
            margin-bottom: 6px;
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--muted);
            line-height: 1.6;
        }

        /* 近期赛事 */
        .event-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .event-item {
            background: var(--bg);
            border-radius: 16px;
            padding: 24px 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            border: 1px solid var(--border);
            transition: box-shadow 0.3s, border-color 0.3s;
            gap: 24px;
        }
        .event-item:hover {
            box-shadow: var(--shadow-card);
            border-color: var(--primary);
        }
        .event-info h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--heading);
            margin-bottom: 4px;
        }
        .event-info p {
            font-size: 0.9rem;
            color: var(--muted);
        }
        .event-date {
            font-size: 0.85rem;
            color: var(--muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .event-status {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 6px 18px;
            border-radius: var(--radius-btn);
            font-size: 0.8rem;
            font-weight: 700;
            flex-shrink: 0;
            white-space: nowrap;
        }
        .event-status.open {
            background: rgba(200, 255, 46, 0.2);
            color: #556b2f;
        }
        .event-status.urgent {
            background: rgba(255, 106, 0, 0.12);
            color: #c25000;
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            overflow: hidden;
            transition: border-color 0.3s;
            margin-bottom: 12px;
        }
        .faq-item.open {
            border-color: var(--primary);
        }
        .faq-q {
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--heading);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: background 0.2s;
            width: 100%;
            text-align: left;
        }
        .faq-q:hover {
            background: #fafaf5;
        }
        .faq-icon {
            width: 24px;
            height: 24px;
            position: relative;
            flex-shrink: 0;
        }
        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            background: var(--muted);
            transition: all 0.3s;
            border-radius: 2px;
        }
        .faq-icon::before {
            width: 14px;
            height: 2px;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }
        .faq-icon::after {
            width: 2px;
            height: 14px;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }
        .faq-item.open .faq-icon::after {
            transform: translate(-50%, -50%) rotate(90deg);
            opacity: 0;
        }
        .faq-a {
            max-height: 0;
            padding: 0 24px;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            color: var(--muted);
            font-size: 0.95rem;
            line-height: 1.75;
        }
        .faq-item.open .faq-a {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        /* CTA */
        .cta-section {
            background: var(--dark);
            color: #fff;
            padding: 96px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(200, 255, 46, 0.16), transparent 60%);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: clamp(2rem, 4vw, 3.2rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
            line-height: 1.2;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 36px;
            font-size: 1.1rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-small {
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.85rem;
            margin-top: 20px;
            letter-spacing: 0.02em;
        }

        /* 其他分类 */
        .other-cats {
            padding: 64px 0;
        }
        .other-cats .container {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .other-cat-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            border-radius: var(--radius-btn);
            background: #fff;
            border: 1px solid var(--border);
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--heading);
            transition: all 0.25s;
        }
        .other-cat-btn:hover {
            border-color: var(--primary);
            background: var(--primary);
            color: var(--dark);
            transform: translateY(-2px);
        }
        .other-cat-btn.active {
            background: var(--dark);
            color: var(--primary);
            border-color: var(--dark);
        }

        /* 页脚 */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.6);
            padding: 56px 0 28px;
            border-top: 3px solid var(--primary);
        }
        .footer-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-bottom: 32px;
            gap: 24px;
            flex-wrap: wrap;
        }
        .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.01em;
        }
        .footer-brand em {
            font-style: normal;
            color: var(--primary);
        }
        .footer-links {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }
        .footer-links a {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            transition: color 0.2s;
            padding: 4px 0;
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.35);
            gap: 12px;
            flex-wrap: wrap;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 60px;
            }
            .nav-links {
                display: flex;
                flex-direction: column;
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: var(--dark);
                justify-content: center;
                align-items: center;
                gap: 36px;
                z-index: 100;
                opacity: 0;
                visibility: hidden;
                transition: opacity 0.35s, visibility 0.35s;
                margin: 0;
            }
            .nav-links.open {
                opacity: 1;
                visibility: visible;
            }
            .nav-links a {
                color: #fff;
                font-size: 1.5rem;
                padding: 8px;
            }
            .nav-links a::after {
                display: none;
            }
            .nav-links a.active {
                color: var(--primary);
            }
            .nav-links .nav-cta {
                background: var(--primary);
                color: var(--dark) !important;
                margin-top: 8px;
                font-size: 1rem;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-cta:not(.nav-links .nav-cta) {
                display: none;
            }

            .category-hero {
                padding: 80px 0 60px;
            }
            .category-hero h1 {
                font-size: 2rem;
            }
            .category-hero p {
                font-size: 1rem;
            }
            .hero-meta {
                gap: 16px;
            }
            .section {
                padding: 64px 0;
            }
            .feature-item {
                flex-direction: column;
                gap: 12px;
                padding: 32px 0;
            }
            .feature-num {
                min-width: 0;
                font-size: 2.2rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .steps {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .event-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                padding: 20px 20px;
            }
            .footer-top {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
            .footer-links {
                justify-content: center;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .step-card {
                padding: 24px 20px;
            }
            .event-info h4 {
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.75rem;
            }
        }

/* roulang page: article */
:root {
        --primary: #C8FF2E;
        --primary-dark: #B8F01A;
        --bg-warm: #F6F6F0;
        --ink: #0C0E0B;
        --text-dark: #141613;
        --text-sub: #6C6F66;
        --text-light: #ECEEE6;
        --border: rgba(12, 14, 11, 0.12);
        --border-dark: rgba(236, 238, 230, 0.18);
        --accent: #FF6A00;
        --radius-card: 18px;
        --radius-btn: 999px;
        --radius-badge: 6px;
        --shadow-card: 0 10px 40px rgba(12, 14, 11, 0.06);
        --shadow-hover: 0 18px 60px rgba(12, 14, 11, 0.12);
        --font-base: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: var(--font-base);
        background: var(--bg-warm);
        color: var(--text-dark);
        line-height: 1.6;
        -webkit-font-smoothing: antialiased;
    }

    a {
        color: inherit;
        text-decoration: none;
        transition: color 0.2s ease;
    }

    a:focus-visible,
    button:focus-visible {
        outline: 3px solid rgba(200, 255, 46, 0.6);
        outline-offset: 2px;
        border-radius: 6px;
    }

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

    button {
        font-family: inherit;
        border: none;
        background: none;
        cursor: pointer;
    }

    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 24px;
    }

    /* ===== 导航 ===== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 100;
        background: rgba(246, 246, 240, 0.92);
        backdrop-filter: blur(14px);
        border-bottom: 1px solid var(--border);
    }

    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 72px;
        gap: 20px;
    }

    .logo {
        font-size: 1.5rem;
        font-weight: 800;
        letter-spacing: -0.02em;
        color: var(--ink);
        display: flex;
        align-items: center;
        gap: 2px;
    }

    .logo em {
        font-style: normal;
        color: var(--primary-dark);
    }

    .nav-links {
        display: flex;
        align-items: center;
        gap: 32px;
    }

    .nav-links a {
        position: relative;
        font-size: 0.95rem;
        font-weight: 600;
        color: var(--text-dark);
        padding: 6px 2px;
        transition: color 0.2s ease;
    }

    .nav-links a::after {
        content: "";
        position: absolute;
        left: 0;
        bottom: -2px;
        width: 100%;
        height: 2px;
        background: var(--primary-dark);
        transform: scaleX(0);
        transform-origin: left;
        transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1);
    }

    .nav-links a:hover::after,
    .nav-links a.active::after {
        transform: scaleX(1);
    }

    .nav-links a.active {
        color: var(--ink);
        font-weight: 700;
    }

    .header-actions {
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .btn-sm {
        padding: 8px 20px;
        font-size: 0.875rem;
    }

    .nav-toggle {
        display: none;
        width: 42px;
        height: 42px;
        border-radius: 12px;
        border: 1px solid var(--border);
        background: var(--bg-warm);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 5px;
        z-index: 1001;
        transition: background 0.2s ease;
    }

    .nav-toggle span {
        display: block;
        width: 20px;
        height: 2px;
        background: var(--ink);
        border-radius: 2px;
        transition: transform 0.3s ease, opacity 0.3s ease;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    /* ===== 阅读进度条 ===== */
    .reading-progress {
        position: fixed;
        top: 72px;
        left: 0;
        height: 3px;
        width: 0;
        background: var(--primary-dark);
        z-index: 99;
        border-radius: 0 3px 3px 0;
    }

    /* ===== 文章标题区 ===== */
    .article-hero {
        background: var(--bg-warm);
        padding: 64px 0 56px;
        border-bottom: 1px solid var(--border);
        position: relative;
        overflow: hidden;
    }

    .article-hero::before {
        content: "";
        position: absolute;
        top: -40%;
        right: -10%;
        width: 520px;
        height: 520px;
        background: radial-gradient(circle, rgba(200, 255, 46, 0.12), transparent 65%);
        pointer-events: none;
    }

    .breadcrumb {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 8px;
        font-size: 0.875rem;
        color: var(--text-sub);
        margin-bottom: 28px;
    }

    .breadcrumb a {
        color: var(--text-sub);
        transition: color 0.2s ease;
    }

    .breadcrumb a:hover {
        color: var(--primary-dark);
    }

    .breadcrumb-sep {
        color: var(--border);
        font-size: 0.875rem;
    }

    .breadcrumb-current {
        color: var(--text-dark);
        font-weight: 600;
        max-width: 360px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .article-title {
        font-size: clamp(2rem, 4vw, 3rem);
        font-weight: 800;
        line-height: 1.2;
        letter-spacing: -0.02em;
        color: var(--text-dark);
        max-width: 880px;
        margin-bottom: 22px;
    }

    .article-meta {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 24px;
        color: var(--text-sub);
        font-size: 0.875rem;
    }

    .meta-item {
        display: inline-flex;
        align-items: center;
        gap: 7px;
    }

    .meta-item svg {
        width: 16px;
        height: 16px;
        opacity: 0.7;
    }

    /* ===== 正文区 ===== */
    .article-main {
        background: var(--bg-warm);
        padding: 48px 0 64px;
    }

    .article-body {
        max-width: 720px;
        margin: 0 auto;
        font-size: 1rem;
        line-height: 1.75;
        color: var(--text-dark);
        word-break: break-word;
    }

    .article-body p {
        margin-bottom: 1.5em;
    }

    .article-body h2 {
        font-size: 1.75rem;
        font-weight: 700;
        line-height: 1.3;
        margin: 2em 0 0.75em;
        letter-spacing: -0.01em;
    }

    .article-body h3 {
        font-size: 1.375rem;
        font-weight: 700;
        line-height: 1.4;
        margin: 1.75em 0 0.5em;
    }

    .article-body h4 {
        font-size: 1.1rem;
        font-weight: 700;
        margin: 1.5em 0 0.45em;
    }

    .article-body img {
        border-radius: 16px;
        margin: 1.75em 0;
        box-shadow: var(--shadow-card);
    }

    .article-body blockquote {
        border-left: 4px solid var(--primary-dark);
        background: rgba(200, 255, 46, 0.08);
        padding: 1em 1.25em;
        margin: 1.5em 0;
        border-radius: 0 12px 12px 0;
        color: var(--text-sub);
        font-style: italic;
    }

    .article-body ul,
    .article-body ol {
        margin: 1em 0 1.5em;
        padding-left: 1.5em;
    }

    .article-body li {
        margin-bottom: 0.5em;
    }

    .article-body a {
        color: var(--primary-dark);
        text-decoration: underline;
        text-underline-offset: 3px;
    }

    .article-body a:hover {
        color: var(--ink);
    }

    .article-body code {
        background: rgba(12, 14, 11, 0.06);
        border-radius: 6px;
        padding: 0.15em 0.4em;
        font-size: 0.9em;
    }

    .article-body table {
        width: 100%;
        border-collapse: collapse;
        margin: 1.5em 0;
        font-size: 0.95em;
    }

    .article-body table th,
    .article-body table td {
        border: 1px solid var(--border);
        padding: 10px 14px;
        text-align: left;
    }

    .article-body table th {
        background: rgba(200, 255, 46, 0.12);
        font-weight: 700;
    }

    /* ===== 文章底部 ===== */
    .article-footer {
        max-width: 720px;
        margin: 48px auto 0;
        padding-top: 28px;
        border-top: 1px solid var(--border);
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 16px;
    }

    .article-tags {
        display: flex;
        align-items: center;
        gap: 8px;
        flex-wrap: wrap;
    }

    .tag {
        display: inline-block;
        padding: 5px 14px;
        font-size: 0.78rem;
        font-weight: 600;
        color: var(--text-sub);
        background: rgba(12, 14, 11, 0.05);
        border-radius: var(--radius-badge);
        letter-spacing: 0.03em;
    }

    .article-share {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 0.8rem;
        color: var(--text-sub);
    }

    .share-btn {
        width: 36px;
        height: 36px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        background: rgba(12, 14, 11, 0.05);
        color: var(--text-dark);
        transition: all 0.25s ease;
    }

    .share-btn svg {
        width: 16px;
        height: 16px;
    }

    .share-btn:hover {
        background: var(--primary);
        transform: translateY(-2px);
    }

    .article-return {
        max-width: 720px;
        margin: 36px auto 0;
        text-align: center;
    }

    /* ===== 按钮 ===== */
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 12px 30px;
        border-radius: var(--radius-btn);
        font-size: 0.95rem;
        font-weight: 600;
        transition: all 0.28s cubic-bezier(0.22, 1, 0.36, 1);
        border: 1.5px solid transparent;
        cursor: pointer;
        white-space: nowrap;
    }

    .btn-primary {
        background: var(--primary);
        color: var(--ink);
        border-color: var(--primary);
    }

    .btn-primary:hover {
        background: #ffffff;
        border-color: var(--primary);
        color: var(--ink);
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(200, 255, 46, 0.35);
    }

    .btn-primary:active {
        transform: translateY(0);
        box-shadow: none;
    }

    .btn-secondary {
        background: transparent;
        color: var(--text-dark);
        border-color: var(--border);
    }

    .btn-secondary:hover {
        border-color: var(--primary-dark);
        color: var(--primary-dark);
        transform: translateY(-2px);
    }

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

    .btn svg {
        width: 16px;
        height: 16px;
    }

    /* ===== 空态 ===== */
    .not-found {
        max-width: 640px;
        margin: 0 auto;
        padding: 80px 32px;
        text-align: center;
        border: 1px dashed var(--border);
        border-radius: var(--radius-card);
        background: #ffffff;
    }

    .not-found-icon {
        width: 72px;
        height: 72px;
        margin: 0 auto 20px;
        border-radius: 50%;
        background: rgba(12, 14, 11, 0.04);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--text-sub);
    }

    .not-found-icon svg {
        width: 32px;
        height: 32px;
    }

    .not-found h2 {
        font-size: 1.5rem;
        font-weight: 700;
        margin-bottom: 10px;
        color: var(--text-dark);
    }

    .not-found p {
        color: var(--text-sub);
        margin-bottom: 24px;
    }

    /* ===== 相关推荐 ===== */
    .related-section {
        padding: 72px 0 88px;
        background: #ffffff;
        border-top: 1px solid var(--border);
    }

    .section-heading {
        margin-bottom: 40px;
        position: relative;
    }

    .section-bar {
        display: inline-block;
        width: 4px;
        height: 24px;
        background: var(--primary-dark);
        border-radius: 2px;
        margin-right: 14px;
        vertical-align: -4px;
    }

    .section-heading h2 {
        display: inline;
        font-size: clamp(1.75rem, 3vw, 2.25rem);
        font-weight: 700;
        color: var(--text-dark);
        letter-spacing: -0.01em;
    }

    .section-heading p {
        margin-top: 10px;
        color: var(--text-sub);
        font-size: 0.95rem;
        max-width: 520px;
    }

    .related-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 28px;
    }

    .related-card {
        display: flex;
        flex-direction: column;
        background: var(--bg-warm);
        border-radius: var(--radius-card);
        overflow: hidden;
        border: 1px solid var(--border);
        box-shadow: var(--shadow-card);
        transition: box-shadow 0.35s ease, transform 0.35s ease;
    }

    .related-card:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-4px);
    }

    .related-img {
        aspect-ratio: 16/10;
        overflow: hidden;
        position: relative;
    }

    .related-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.5s ease;
    }

    .related-card:hover .related-img img {
        transform: scale(1.04);
    }

    .related-img::after {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, transparent 55%, rgba(12, 14, 11, 0.25));
        pointer-events: none;
    }

    .related-body {
        padding: 24px 26px 26px;
        flex: 1;
        display: flex;
        flex-direction: column;
    }

    .related-cat {
        display: inline-block;
        align-self: flex-start;
        font-size: 0.75rem;
        font-weight: 600;
        color: var(--text-dark);
        background: rgba(200, 255, 46, 0.5);
        padding: 4px 12px;
        border-radius: var(--radius-badge);
        margin-bottom: 12px;
        letter-spacing: 0.03em;
    }

    .related-body h3 {
        font-size: 1.15rem;
        font-weight: 700;
        line-height: 1.35;
        color: var(--text-dark);
        margin-bottom: 8px;
        transition: color 0.25s ease;
    }

    .related-card:hover .related-body h3 {
        color: var(--primary-dark);
    }

    .related-body p {
        font-size: 0.9rem;
        color: var(--text-sub);
        line-height: 1.6;
        margin-bottom: 16px;
        flex: 1;
    }

    .related-meta {
        display: flex;
        align-items: center;
        justify-content: space-between;
        font-size: 0.8rem;
        color: var(--text-sub);
    }

    .related-arrow {
        width: 34px;
        height: 34px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        background: rgba(12, 14, 11, 0.06);
        color: var(--text-dark);
        transition: all 0.25s ease;
    }

    .related-arrow svg {
        width: 14px;
        height: 14px;
    }

    .related-card:hover .related-arrow {
        background: var(--primary);
        color: var(--ink);
    }

    /* ===== 页脚 ===== */
    .site-footer {
        background: var(--ink);
        color: var(--text-light);
        border-top: 3px solid var(--primary);
        padding: 56px 0 30px;
    }

    .footer-top {
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 24px;
        margin-bottom: 40px;
    }

    .footer-brand {
        font-size: 1.5rem;
        font-weight: 800;
        color: #ffffff;
        letter-spacing: -0.01em;
    }

    .footer-links {
        display: flex;
        align-items: center;
        gap: 28px;
        flex-wrap: wrap;
    }

    .footer-links a {
        color: var(--text-light);
        font-size: 0.9rem;
        opacity: 0.8;
        transition: opacity 0.2s ease, color 0.2s ease;
    }

    .footer-links a:hover {
        color: var(--primary);
        opacity: 1;
    }

    .footer-bottom {
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 12px;
        padding-top: 24px;
        border-top: 1px solid var(--border-dark);
        font-size: 0.8rem;
        color: rgba(236, 238, 230, 0.55);
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
        .article-title {
            font-size: clamp(1.75rem, 3.5vw, 2.5rem);
        }

        .related-grid {
            gap: 20px;
        }
    }

    @media (max-width: 768px) {
        .container {
            padding: 0 16px;
        }

        .nav-links {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(12, 14, 11, 0.98);
            flex-direction: column;
            justify-content: center;
            gap: 12px;
            transform: translateX(100%);
            transition: transform 0.38s cubic-bezier(0.22, 1, 0.36, 1);
            z-index: 1000;
        }

        .nav-links.open {
            transform: translateX(0);
        }

        .nav-links a {
            color: var(--text-light);
            font-size: 1.6rem;
            font-weight: 700;
            padding: 14px 20px;
        }

        .nav-links a::after {
            display: none;
        }

        .nav-links a.active {
            color: var(--primary);
        }

        .nav-toggle {
            display: flex;
        }

        .header-actions .btn-sm {
            display: none;
        }

        .reading-progress {
            top: 64px;
        }

        .header-inner {
            height: 64px;
        }

        .article-hero {
            padding: 40px 0 36px;
        }

        .article-hero::before {
            width: 300px;
            height: 300px;
        }

        .article-title {
            font-size: 1.6rem;
            line-height: 1.25;
        }

        .article-meta {
            gap: 12px;
            font-size: 0.8rem;
        }

        .article-main {
            padding: 32px 0 48px;
        }

        .article-body {
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .article-body h2 {
            font-size: 1.35rem;
        }

        .article-body h3 {
            font-size: 1.15rem;
        }

        .article-footer {
            margin-top: 36px;
            padding-top: 20px;
        }

        .related-section {
            padding: 48px 0 56px;
        }

        .related-grid {
            grid-template-columns: 1fr;
        }

        .section-heading h2 {
            font-size: 1.5rem;
        }

        .section-heading p {
            font-size: 0.875rem;
        }

        .footer-top {
            flex-direction: column;
            align-items: flex-start;
            gap: 16px;
        }

        .footer-links {
            gap: 18px;
        }

        .footer-bottom {
            flex-direction: column;
            align-items: flex-start;
            font-size: 0.75rem;
        }

        .btn {
            padding: 11px 24px;
            font-size: 0.875rem;
        }
    }

    @media (max-width: 520px) {
        .breadcrumb-current {
            max-width: 220px;
        }

        .article-title {
            font-size: 1.35rem;
        }

        .article-body {
            font-size: 0.9rem;
        }

        .related-body {
            padding: 18px 20px;
        }

        .related-body h3 {
            font-size: 1rem;
        }

        .not-found {
            padding: 48px 20px;
        }
    }