/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f3d2e;
            --primary-dark: #0a2a20;
            --bg: #f7f4ef;
            --bg-light: #fffdf9;
            --accent: #c8f135;
            --accent-light: #d6ff70;
            --gold: #f5a623;
            --text: #1f2a24;
            --text-muted: #6b7a72;
            --border: #e3ddd2;
            --radius: 16px;
            --radius-lg: 20px;
            --shadow-sm: 0 3px 12px rgba(15, 61, 46, 0.06);
            --shadow-hover: 0 12px 30px rgba(15, 61, 46, 0.14);
            --shadow-nav: 0 8px 32px rgba(0, 0, 0, 0.18);
            --shadow-cta: 0 8px 24px rgba(200, 241, 53, 0.30);
            --font: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition: .25s ease;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            margin: 0;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition), border-color var(--transition), background var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        :focus-visible {
            outline: 3px solid rgba(200, 241, 53, 0.55);
            outline-offset: 2px;
        }
        .container {
            max-width: 1200px;
        }
        .section {
            padding: 6rem 0;
        }

        /* ===== 通用组件 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: .55rem;
            border-radius: 12px;
            border: none;
            font-weight: 600;
            padding: .9rem 2rem;
            transition: all var(--transition);
            font-size: 1rem;
            line-height: 1.4;
            cursor: pointer;
        }
        .btn-cta {
            background: var(--accent);
            color: var(--primary-dark);
            box-shadow: var(--shadow-cta);
        }
        .btn-cta:hover {
            background: var(--accent-light);
            color: var(--primary-dark);
            transform: translateX(4px);
            box-shadow: 0 12px 28px rgba(200, 241, 53, 0.42);
        }
        .btn-line {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.85);
            color: #fff;
        }
        .btn-line:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-dark {
            background: var(--primary);
            color: #fff;
        }
        .btn-dark:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 1rem 2.5rem;
            border-radius: 50px;
            font-size: 1.05rem;
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 1.25rem;
            margin-bottom: 2.6rem;
        }
        .section-tag {
            display: inline-block;
            font-size: .75rem;
            font-weight: 600;
            letter-spacing: .18em;
            text-transform: uppercase;
            color: var(--gold);
            margin-bottom: .35rem;
        }
        .section-title {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            font-weight: 700;
            color: var(--text);
            position: relative;
            padding-left: 1rem;
            margin: 0;
            line-height: 1.25;
        }
        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: .15em;
            bottom: .15em;
            width: 4px;
            background: var(--accent);
            border-radius: 2px;
        }
        .section-more {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            color: var(--text-muted);
            font-weight: 500;
            font-size: .95rem;
            transition: all var(--transition);
            flex-shrink: 0;
        }
        .section-more:hover {
            color: var(--primary);
            gap: .75rem;
        }

        .badge-cat {
            display: inline-block;
            padding: .3rem .8rem;
            background: rgba(200, 241, 53, 0.18);
            color: var(--primary-dark);
            border-radius: 30px;
            font-size: .8rem;
            font-weight: 600;
        }

        /* ===== 悬浮胶囊导航 ===== */
        .site-nav {
            position: fixed;
            top: .75rem;
            left: 1rem;
            right: 1rem;
            z-index: 1030;
            pointer-events: none;
        }
        .nav-pill {
            max-width: 1140px;
            margin: 0 auto;
            background: rgba(10, 42, 32, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 60px;
            padding: .7rem 1.35rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: var(--shadow-nav);
            pointer-events: auto;
            gap: 1rem;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: .55rem;
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            white-space: nowrap;
            transition: color var(--transition);
        }
        .brand i {
            color: var(--accent);
            font-size: 1.25rem;
            transition: transform var(--transition);
        }
        .brand:hover {
            color: var(--accent-light);
        }
        .brand:hover i {
            transform: rotate(-12deg) scale(1.08);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 1.5rem;
        }
        .nav-menu .nav-link-item {
            color: rgba(255, 255, 255, 0.85);
            font-size: .95rem;
            padding: .5rem 0;
            position: relative;
            font-weight: 500;
            background: none;
            border: none;
            transition: color var(--transition);
        }
        .nav-menu .nav-link-item:hover {
            color: var(--accent);
        }
        .nav-menu .nav-link-item.active {
            color: var(--accent);
        }
        .nav-menu .nav-link-item.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .nav-cta {
            background: var(--accent);
            color: var(--primary-dark) !important;
            padding: .55rem 1.5rem !important;
            border-radius: 30px;
            font-weight: 600;
            font-size: .92rem;
            transition: all var(--transition);
            box-shadow: 0 4px 14px rgba(200, 241, 53, 0.3);
        }
        .nav-cta:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(200, 241, 53, 0.4);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.35rem;
            padding: .4rem .6rem;
            border-radius: 8px;
            cursor: pointer;
            min-width: 44px;
            min-height: 44px;
            align-items: center;
            justify-content: center;
        }
        .nav-toggle:hover {
            color: var(--accent);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding: 130px 0 110px;
            background:
                linear-gradient(100deg, rgba(10, 42, 32, 0.95) 0%, rgba(10, 42, 32, 0.80) 45%, rgba(10, 42, 32, 0.45) 100%),
                url('/assets/images/backpic/back-1.png') center 30% / cover no-repeat;
            background-color: var(--primary-dark);
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: 60px;
            height: 90px;
            background: repeating-linear-gradient(-25deg, transparent 0 26px, rgba(200, 241, 53, 0.10) 26px 30px, transparent 30px 56px, rgba(200, 241, 53, 0.05) 56px 60px);
            pointer-events: none;
            opacity: .55;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            background: rgba(200, 241, 53, 0.12);
            border: 1px solid rgba(200, 241, 53, 0.25);
            color: var(--accent);
            padding: .45rem 1.1rem;
            border-radius: 30px;
            font-size: .85rem;
            font-weight: 600;
            letter-spacing: .04em;
            margin-bottom: 1.5rem;
        }
        .hero-title {
            color: #fff;
            font-size: clamp(2.4rem, 6vw, 4.2rem);
            font-weight: 900;
            line-height: 1.1;
            margin-bottom: 1.25rem;
        }
        .hero-title .accent-text {
            color: var(--accent);
        }
        .hero-subtitle {
            color: rgba(247, 244, 239, 0.9);
            font-size: 1.15rem;
            line-height: 1.7;
            max-width: 620px;
            margin-bottom: 2rem;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 2.5rem;
        }
        .hero-float {
            position: absolute;
            right: 4%;
            bottom: 12%;
            display: flex;
            gap: 1rem;
            z-index: 2;
        }
        .float-card {
            background: rgba(10, 42, 32, 0.62);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 16px;
            padding: 1rem 1.35rem;
            display: flex;
            align-items: center;
            gap: .75rem;
            color: #fff;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
            animation: floatIn .8s ease both;
        }
        .float-card:nth-child(2) {
            animation-delay: .15s;
        }
        .float-icon {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(200, 241, 53, 0.15);
            color: var(--accent);
            font-size: 1.15rem;
        }
        .float-card strong {
            font-size: 1.3rem;
            display: block;
            line-height: 1.2;
            color: var(--accent);
        }
        .float-card span {
            font-size: .8rem;
            color: rgba(255, 255, 255, 0.75);
        }
        @keyframes floatIn {
            from {
                opacity: 0;
                transform: translateY(18px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== 横滑片库 ===== */
        .library-section {
            background: var(--bg);
        }
        .library-track {
            display: flex;
            gap: 1.1rem;
            overflow-x: auto;
            padding-bottom: 1rem;
            scroll-behavior: smooth;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .library-track::-webkit-scrollbar {
            display: none;
        }
        .library-card {
            flex: 0 0 280px;
            border-radius: 16px;
            overflow: hidden;
            position: relative;
            aspect-ratio: 16 / 10;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition);
            cursor: pointer;
        }
        .library-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .library-card:hover img {
            transform: scale(1.05);
        }
        .library-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .grad-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 30%, rgba(10, 42, 32, 0.85) 100%);
        }
        .duration {
            position: absolute;
            right: 12px;
            bottom: 12px;
            background: rgba(0, 0, 0, 0.55);
            color: #fff;
            font-size: .8rem;
            padding: .3rem .7rem;
            border-radius: 6px;
            z-index: 2;
            backdrop-filter: blur(4px);
        }
        .card-title {
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 44px;
            color: #fff;
            font-size: 1.05rem;
            font-weight: 600;
            z-index: 2;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            margin: 0;
        }
        .level-pill {
            position: absolute;
            left: 12px;
            top: 12px;
            z-index: 2;
            display: inline-flex;
            align-items: center;
            gap: .3rem;
            background: rgba(10, 42, 32, 0.7);
            backdrop-filter: blur(4px);
            color: #fff;
            font-size: .75rem;
            padding: .25rem .7rem;
            border-radius: 30px;
        }
        .level-pill i {
            font-size: .35rem;
        }
        .level-pill.beginner i {
            color: var(--accent);
        }
        .level-pill.intermediate i {
            color: var(--gold);
        }
        .level-pill.advanced i {
            color: #e76f51;
        }

        /* ===== 热播推荐 ===== */
        .hot-section {
            background: var(--bg-light);
        }
        .hot-main-card {
            position: relative;
            display: block;
            border-radius: 20px;
            overflow: hidden;
            height: 100%;
            min-height: 320px;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .hot-main-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .hot-main-card>img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }
        .hot-main-body {
            position: absolute;
            inset: 0;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            background: linear-gradient(180deg, transparent 20%, rgba(10, 42, 32, 0.92) 100%);
            padding: 2rem;
            color: #fff;
        }
        .hot-badge {
            display: inline-block;
            align-self: flex-start;
            background: var(--accent);
            color: var(--primary-dark);
            font-size: .8rem;
            font-weight: 700;
            padding: .3rem .9rem;
            border-radius: 30px;
            margin-bottom: .75rem;
        }
        .hot-main-title {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: .5rem;
            line-height: 1.3;
        }
        .hot-main-desc {
            font-size: .95rem;
            color: rgba(255, 255, 255, 0.8);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: .75rem;
            max-width: 480px;
        }
        .hot-main-meta {
            font-size: .85rem;
            color: rgba(255, 255, 255, 0.7);
            display: flex;
            align-items: center;
            gap: .4rem;
        }
        .hot-list {
            display: flex;
            flex-direction: column;
            gap: .8rem;
            height: 100%;
            justify-content: space-between;
        }
        .hot-list-item {
            display: flex;
            gap: 1rem;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: .85rem;
            transition: all var(--transition);
            align-items: center;
        }
        .hot-list-item:hover {
            background: rgba(200, 241, 53, 0.08);
            border-color: rgba(200, 241, 53, 0.5);
            transform: translateX(4px);
            box-shadow: var(--shadow-sm);
        }
        .hot-thumb {
            width: 80px;
            height: 80px;
            border-radius: 10px;
            overflow: hidden;
            flex-shrink: 0;
            background: var(--primary-dark);
        }
        .hot-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }
        .hot-list-item:hover .hot-thumb img {
            transform: scale(1.05);
        }
        .hot-info {
            flex: 1;
            min-width: 0;
        }
        .hot-info h4 {
            font-size: 1rem;
            font-weight: 600;
            margin: 0 0 .4rem;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            line-height: 1.4;
        }
        .hot-meta {
            display: flex;
            align-items: center;
            gap: .6rem;
            font-size: .8rem;
            color: var(--text-muted);
        }
        .cat-tag {
            display: inline-block;
            background: rgba(15, 61, 46, 0.08);
            color: var(--primary);
            padding: .18rem .6rem;
            border-radius: 30px;
            font-weight: 500;
            font-size: .75rem;
        }
        .views i {
            margin-right: .25rem;
        }

        /* ===== 片单分区 ===== */
        .playlist-section {
            background: var(--bg);
        }
        .pill-tabs {
            border-bottom: 0;
            gap: .5rem;
            flex-wrap: wrap;
            margin-bottom: 2.2rem;
        }
        .pill-tabs .nav-link {
            border-radius: 30px;
            background: var(--bg-light);
            color: var(--primary);
            border: 1px solid var(--border);
            padding: .55rem 1.35rem;
            font-weight: 600;
            font-size: .95rem;
            transition: all var(--transition);
        }
        .pill-tabs .nav-link:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-1px);
        }
        .pill-tabs .nav-link.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 6px 16px rgba(15, 61, 46, 0.18);
        }
        .tab-pane {
            display: none;
        }
        .tab-pane.active {
            display: block;
        }
        .playlist-card {
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            height: 100%;
            display: block;
        }
        .playlist-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(200, 241, 53, 0.6);
        }
        .playlist-cover {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--primary-dark);
        }
        .playlist-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .playlist-card:hover .playlist-cover img {
            transform: scale(1.06);
        }
        .playlist-cover .badge-cat {
            position: absolute;
            left: 12px;
            top: 12px;
            z-index: 2;
            background: var(--accent);
            color: var(--primary-dark);
        }
        .playlist-body {
            padding: 1.1rem 1.2rem 1.3rem;
        }
        .playlist-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: .6rem;
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .playlist-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: .82rem;
            color: var(--text-muted);
        }
        .difficulty {
            display: flex;
            align-items: center;
            gap: .25rem;
        }
        .difficulty .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--border);
        }
        .difficulty .dot.on-beginner {
            background: var(--accent);
        }
        .difficulty .dot.on-intermediate {
            background: var(--gold);
        }
        .difficulty .dot.on-advanced {
            background: #e76f51;
        }
        .tab-pane.active .playlist-card {
            animation: fadeUp .4s ease both;
        }
        .tab-pane.active .playlist-card:nth-child(2) {
            animation-delay: .06s;
        }
        .tab-pane.active .playlist-card:nth-child(3) {
            animation-delay: .12s;
        }
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(8px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== 最新信息 CMS ===== */
        .latest-section {
            background: var(--bg-light);
        }
        .news-list-item {
            display: flex;
            gap: 1.25rem;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 1.4rem;
            margin-bottom: 1rem;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .news-list-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(200, 241, 53, 0.6);
        }
        .news-thumb {
            width: 120px;
            height: 80px;
            border-radius: 10px;
            overflow: hidden;
            flex-shrink: 0;
            background: var(--primary-dark);
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-info {
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
        }
        .news-info h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: .4rem;
            line-height: 1.45;
            color: var(--text);
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition);
        }
        .news-list-item:hover .news-info h3 {
            color: var(--primary);
        }
        .news-info p {
            font-size: .88rem;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: .5rem;
            line-height: 1.6;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: .8rem;
            margin-top: auto;
            font-size: .8rem;
            color: var(--text-muted);
        }
        .news-cat {
            color: var(--accent);
            font-weight: 600;
            background: rgba(200, 241, 53, 0.12);
            padding: .2rem .7rem;
            border-radius: 30px;
            transition: background var(--transition), color var(--transition);
        }
        .news-cat:hover {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .news-date {
            display: flex;
            align-items: center;
            gap: .3rem;
        }

        .empty-state {
            border: 2px dashed var(--border);
            border-radius: 16px;
            background: #faf8f4;
            padding: 3rem 2rem;
            text-align: center;
            color: var(--text-muted);
            font-size: .95rem;
        }
        .empty-icon {
            font-size: 2.2rem;
            color: var(--border);
            display: block;
            margin-bottom: .6rem;
        }

        /* 侧边部件 */
        .side-widget {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 1.5rem;
            margin-bottom: 1.25rem;
            box-shadow: var(--shadow-sm);
        }
        .widget-title {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 1.1rem;
            color: var(--text);
            position: relative;
            padding-left: .85rem;
        }
        .widget-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: .2em;
            bottom: .2em;
            width: 3px;
            background: var(--accent);
            border-radius: 2px;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: .5rem;
        }
        .tag-cloud .tag {
            background: var(--bg);
            border: 1px solid var(--border);
            color: var(--text);
            font-size: .82rem;
            padding: .35rem .85rem;
            border-radius: 30px;
            transition: all var(--transition);
        }
        .tag-cloud .tag:hover {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
            transform: translateY(-1px);
        }
        .featured-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .featured-list li + li {
            border-top: 1px solid var(--border);
            margin-top: .55rem;
            padding-top: .55rem;
        }
        .featured-list a {
            display: flex;
            align-items: center;
            gap: .6rem;
            font-size: .92rem;
            color: var(--text);
            transition: color var(--transition), transform var(--transition);
        }
        .featured-list a:hover {
            color: var(--primary);
            transform: translateX(4px);
        }
        .featured-list .rank {
            font-size: .8rem;
            font-weight: 700;
            color: var(--gold);
            width: 26px;
            height: 26px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(245, 166, 35, 0.1);
            border-radius: 8px;
            flex-shrink: 0;
        }

        /* ===== 追剧 CTA ===== */
        .cta-section {
            position: relative;
            padding: 5rem 0;
            background-color: var(--primary-dark);
            background-image:
                radial-gradient(circle at 20px 20px, rgba(200, 241, 53, 0.07) 2px, transparent 3px),
                url('/assets/images/backpic/back-2.webp');
            background-size: 40px 40px, cover;
            background-position: center, center;
            text-align: center;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(10, 42, 32, 0.88);
            z-index: 0;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            padding: 0 1rem;
        }
        .cta-title {
            color: #fff;
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 1rem;
        }
        .cta-title .accent-text {
            color: var(--accent);
        }
        .cta-sub {
            color: rgba(247, 244, 239, 0.72);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 2rem;
            line-height: 1.7;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.75);
            padding-top: 4.5rem;
            position: relative;
        }
        .site-footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent), transparent 70%);
        }
        .footer-brand-name {
            display: flex;
            align-items: center;
            gap: .5rem;
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 1rem;
        }
        .footer-brand-name i {
            color: var(--accent);
            font-size: 1.3rem;
        }
        .footer-desc {
            font-size: .88rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 1.25rem;
            max-width: 320px;
        }
        .footer-social {
            display: flex;
            gap: .6rem;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.75);
            font-size: .9rem;
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .footer-title {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 1.1rem;
            position: relative;
            padding-bottom: .5rem;
        }
        .footer-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 24px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: .5rem;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: .9rem;
            transition: all var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            margin-top: 3.5rem;
            padding: 1.25rem 0;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: .5rem;
            font-size: .85rem;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 992px) {
            .section {
                padding: 3.5rem 0;
            }
            .hot-list {
                margin-top: 1rem;
            }
        }
        @media (max-width: 768px) {
            .site-nav {
                left: .6rem;
                right: .6rem;
                top: .6rem;
            }
            .nav-pill {
                padding: .5rem .9rem;
            }
            .brand {
                font-size: .95rem;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: calc(100% + 10px);
                left: 0;
                right: 0;
                background: rgba(10, 42, 32, 0.97);
                backdrop-filter: blur(18px);
                border-radius: 20px;
                padding: 1.25rem 1.5rem;
                flex-direction: column;
                align-items: stretch;
                gap: .25rem;
                box-shadow: var(--shadow-nav);
                border: 1px solid rgba(255, 255, 255, 0.08);
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu .nav-link-item {
                padding: .8rem .5rem;
                font-size: 1rem;
                border-radius: 8px;
                min-height: 44px;
                display: flex;
                align-items: center;
            }
            .nav-menu .nav-link-item.active::after {
                display: none;
            }
            .nav-menu .nav-link-item.active {
                background: rgba(200, 241, 53, 0.1);
                color: var(--accent);
                padding-left: .8rem;
            }
            .nav-cta {
                text-align: center;
                justify-content: center;
                margin-top: .4rem;
                padding: .8rem 1.5rem !important;
                border-radius: 12px;
            }
            .hero {
                min-height: 80vh;
                padding: 110px 0 90px;
                align-items: flex-start;
            }
            .hero-title {
                font-size: clamp(2rem, 8vw, 2.8rem);
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-actions {
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-float {
                display: none;
            }
            .library-card {
                flex-basis: 75vw;
            }
            .news-list-item {
                flex-direction: column;
            }
            .news-thumb {
                width: 100%;
                height: 150px;
            }
            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: .75rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 576px) {
            .float-card {
                padding: .8rem .9rem;
            }
            .playlist-body h3 {
                font-size: .95rem;
            }
            .pill-tabs .nav-link {
                padding: .5rem 1rem;
                font-size: .88rem;
            }
        }

/* roulang page: article */
:root {
            --primary: #0f3d2e;
            --primary-dark: #0a2a20;
            --bg: #f7f4ef;
            --accent: #c8f135;
            --accent-hover: #d4f556;
            --amber: #f5a623;
            --text: #1f2a24;
            --text-muted: #6b7a72;
            --border: #e3ddd2;
            --radius: 16px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 3px 12px rgba(15, 61, 46, 0.06);
            --shadow-hover: 0 12px 30px rgba(15, 61, 46, 0.14);
            --shadow-nav: 0 8px 32px rgba(0, 0, 0, 0.18);
            --shadow-cta: 0 8px 24px rgba(200, 241, 53, 0.30);
            --font: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --section-space: 6rem;
        }

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

        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: all 0.3s ease;
        }

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* ========== 悬浮胶囊导航 ========== */
        .site-nav {
            position: fixed;
            top: 0.75rem;
            left: 1rem;
            right: 1rem;
            z-index: 1030;
        }

        .nav-pill {
            max-width: 1140px;
            margin: 0 auto;
            border-radius: 60px;
            background: rgba(10, 42, 32, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: var(--shadow-nav);
            padding: 0.6rem 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.5rem;
            flex-wrap: wrap;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            white-space: nowrap;
        }

        .brand i {
            color: var(--accent);
            font-size: 1.4rem;
        }

        .brand span {
            color: #fff;
        }

        .brand:hover span {
            color: var(--accent);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.4rem;
            padding: 0.5rem 0.75rem;
            border-radius: 8px;
            cursor: pointer;
            transition: background 0.3s;
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 0.35rem;
            flex-wrap: wrap;
        }

        .nav-link-item {
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: 30px;
            text-decoration: none;
            transition: all 0.3s ease;
            position: relative;
            white-space: nowrap;
        }

        .nav-link-item:hover {
            color: var(--accent);
            background: rgba(200, 241, 53, 0.1);
        }

        .nav-link-item.active {
            color: var(--accent);
        }

        .nav-link-item.active::after {
            content: '';
            position: absolute;
            left: 1rem;
            right: 1rem;
            bottom: 0.2rem;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .nav-cta {
            background: var(--accent);
            color: var(--primary-dark) !important;
            font-weight: 600;
            padding: 0.5rem 1.4rem;
            border-radius: 30px;
            box-shadow: 0 2px 10px rgba(200, 241, 53, 0.25);
        }

        .nav-cta:hover {
            background: var(--accent-hover);
            color: var(--primary-dark) !important;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(200, 241, 53, 0.35);
        }

        /* ========== 面包屑 ========== */
        .breadcrumb-wrap {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            padding: 7rem 0 2.5rem;
            margin-bottom: 0;
        }

        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            flex-wrap: wrap;
        }

        .breadcrumb-custom a {
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
            transition: color 0.3s;
        }

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

        .breadcrumb-custom .sep {
            color: rgba(255, 255, 255, 0.4);
        }

        .breadcrumb-custom .current {
            color: var(--accent);
            max-width: 300px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* ========== 文章 TDK 区 ========== */
        .article-header-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 3rem;
            margin-top: -2rem;
            box-shadow: var(--shadow);
            position: relative;
            z-index: 5;
        }

        .article-header-card .meta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem;
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
        }

        .article-header-card .meta-row span {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }

        .article-header-card .meta-row i {
            color: var(--primary);
            font-size: 0.85rem;
        }

        .article-header-card h1 {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            font-weight: 900;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 0;
        }

        .cat-tag {
            display: inline-block;
            background: rgba(200, 241, 53, 0.2);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 0.3rem 1rem;
            border-radius: 30px;
            border: 1px solid rgba(200, 241, 53, 0.5);
            margin-bottom: 1.2rem;
        }

        /* ========== 正文阅读区 ========== */
        .article-body-wrap {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 3rem;
            max-width: 860px;
            margin: 2rem auto 0;
            box-shadow: var(--shadow);
            border: 1px solid rgba(227, 221, 210, 0.5);
        }

        .article-body {
            max-width: 760px;
            margin: 0 auto;
            font-size: 1rem;
            line-height: 1.9;
            color: var(--text);
        }

        .article-body h2 {
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--primary);
            margin: 2.5rem 0 1.2rem;
            padding-left: 1rem;
            border-left: 4px solid var(--accent);
            border-radius: 0 8px 8px 0;
        }

        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--primary);
            margin: 2rem 0 1rem;
        }

        .article-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--primary);
            margin: 1.5rem 0 0.8rem;
        }

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

        .article-body img {
            width: 100%;
            border-radius: 12px;
            margin: 1.8rem 0;
        }

        .article-body figure img {
            margin: 1.8rem 0 0.5rem;
        }

        .article-body figcaption {
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
        }

        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: var(--bg);
            padding: 1.25rem 1.5rem;
            border-radius: 0 8px 8px 0;
            margin: 1.8rem 0;
            color: var(--text);
            font-style: normal;
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.8rem 0;
            border-radius: 8px;
            overflow: hidden;
        }

        .article-body table th,
        .article-body table td {
            padding: 0.75rem 1rem;
            border: 1px solid var(--border);
            text-align: left;
        }

        .article-body table th {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .article-body table tr:nth-child(even) {
            background: var(--bg);
        }

        .article-body ul,
        .article-body ol {
            margin: 1.2rem 0 1.5rem;
            padding-left: 1.5rem;
        }

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

        .article-body a {
            color: var(--primary);
            border-bottom: 2px solid var(--accent);
            font-weight: 500;
        }

        /* ========== 未找到 ========== */
        .article-not-found {
            text-align: center;
            padding: 4rem 2rem;
        }

        .article-not-found .icon {
            font-size: 3rem;
            color: var(--text-muted);
            margin-bottom: 1rem;
        }

        .article-not-found h3 {
            color: var(--primary);
            font-size: 1.3rem;
            margin-bottom: 0.5rem;
        }

        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 1.5rem;
        }

        .article-not-found .btn-home {
            display: inline-block;
            padding: 0.75rem 2rem;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            font-weight: 500;
            transition: all 0.3s;
        }

        .article-not-found .btn-home:hover {
            background: var(--accent);
            color: var(--primary-dark);
        }

        /* ========== 相关推荐 ========== */
        .related-section {
            padding: 4rem 0 2rem;
        }

        .related-section .section-title {
            font-size: clamp(1.4rem, 2.5vw, 1.8rem);
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .related-section .section-title::before {
            content: '';
            width: 5px;
            height: 24px;
            background: var(--accent);
            border-radius: 4px;
        }

        .related-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 1.2rem;
            display: flex;
            gap: 1.2rem;
            align-items: center;
            border: 1px solid transparent;
            box-shadow: var(--shadow);
            height: 100%;
            transition: all 0.3s ease;
        }

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

        .related-card img {
            width: 100px;
            height: 70px;
            object-fit: cover;
            border-radius: 8px;
            flex-shrink: 0;
        }

        .related-card .related-info {
            min-width: 0;
        }

        .related-card .cat-tag-sm {
            display: inline-block;
            font-size: 0.75rem;
            color: var(--amber);
            font-weight: 500;
            margin-bottom: 0.3rem;
        }

        .related-card h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 0.4rem;
            line-height: 1.4;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }

        .related-card .meta {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ========== 返回入口 ========== */
        .back-entry {
            padding: 2rem 0 5rem;
        }

        .back-entry .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.7rem 1.8rem;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 50px;
            color: var(--primary);
            font-weight: 500;
            transition: all 0.3s;
        }

        .back-entry .btn-back:hover {
            border-color: var(--accent);
            background: rgba(200, 241, 53, 0.08);
            transform: translateX(-4px);
        }

        .back-entry .btn-back i {
            font-size: 0.9rem;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #0a2a20;
            color: #fff;
            padding: 5rem 0 0;
            position: relative;
            margin-top: 3rem;
        }

        .site-footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent), transparent);
        }

        .footer-brand-name {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1.2rem;
        }

        .footer-brand-name i {
            color: var(--accent);
        }

        .footer-desc {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            line-height: 1.8;
            margin-bottom: 1.5rem;
        }

        .footer-social {
            display: flex;
            gap: 0.8rem;
        }

        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.95rem;
            transition: all 0.3s;
        }

        .footer-social a:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-3px);
        }

        .footer-title {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 1.2rem;
            position: relative;
            padding-bottom: 0.5rem;
        }

        .footer-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 32px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

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

        .footer-links li {
            margin-bottom: 0.6rem;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            transition: all 0.3s;
            text-decoration: none;
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 6px;
        }

        .footer-links li span {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
        }

        .footer-links i {
            margin-right: 0.4rem;
            color: var(--accent);
            font-size: 0.85rem;
        }

        .footer-copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 1.5rem 0;
            margin-top: 3rem;
            text-align: center;
            color: rgba(255, 255, 255, 0.45);
            font-size: 0.85rem;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 768px) {
            .site-nav {
                left: 0.75rem;
                right: 0.75rem;
                top: 0.5rem;
            }

            .nav-pill {
                padding: 0.6rem 1rem;
                border-radius: 24px;
            }

            .nav-toggle {
                display: block;
            }

            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 0.6rem;
                padding: 0.8rem 0 0.5rem;
            }

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

            .nav-link-item {
                padding: 0.75rem 1rem;
                font-size: 1rem;
                text-align: center;
                min-height: 44px;
                display: flex;
                align-items: center;
                justify-content: center;
            }

            .nav-link-item.active::after {
                left: 50%;
                transform: translateX(-50%);
                right: auto;
                width: 40px;
            }

            .nav-cta {
                margin-top: 0.5rem;
                justify-content: center;
            }

            .breadcrumb-wrap {
                padding: 6rem 0 2rem;
            }

            .article-header-card {
                padding: 1.8rem;
                margin-top: -1.5rem;
            }

            .article-header-card .meta-row {
                gap: 0.8rem;
                font-size: 0.85rem;
            }

            .article-body-wrap {
                padding: 1.5rem;
                margin-top: 1.2rem;
            }

            .related-card {
                flex-direction: column;
                align-items: flex-start;
            }

            .related-card img {
                width: 100%;
                height: 140px;
            }

            :root {
                --section-space: 3.5rem;
            }
        }

        @media (max-width: 576px) {
            .container {
                padding: 0 1rem;
            }

            .breadcrumb-custom .current {
                max-width: 180px;
            }

            .article-header-card h1 {
                font-size: 1.4rem;
            }

            .article-body-wrap {
                padding: 1.2rem;
            }

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

        /* 阅读进度条 */
        .reading-progress {
            position: fixed;
            top: 0;
            left: 0;
            height: 3px;
            background: var(--accent);
            z-index: 1031;
            transition: width 0.1s ease;
            box-shadow: 0 0 8px rgba(200, 241, 53, 0.5);
        }

/* roulang page: category1 */
:root {
            --primary: #0f3d2e;
            --primary-dark: #0a2a20;
            --primary-light: #1e5c45;
            --accent: #c8f135;
            --accent-hover: #d9fa6b;
            --amber: #f5a623;
            --bg: #f7f4ef;
            --bg-white: #ffffff;
            --text: #1f2a24;
            --text-secondary: #6b7a72;
            --border: #e3ddd2;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-pill: 60px;
            --shadow-card: 0 3px 12px rgba(15, 61, 46, 0.06);
            --shadow-hover: 0 12px 30px rgba(15, 61, 46, 0.14);
            --shadow-cta: 0 8px 24px rgba(200, 241, 53, 0.30);
            --nav-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
            --section-padding: 6rem;
            --section-padding-mobile: 3.5rem;
            --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
        }

        /* ---------- 导航 ---------- */
        .site-nav {
            position: fixed;
            top: 0.75rem;
            left: 1rem;
            right: 1rem;
            z-index: 1030;
        }
        .nav-pill {
            max-width: 1140px;
            margin: 0 auto;
            border-radius: var(--radius-pill);
            background: rgba(10, 42, 32, 0.86);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.65rem 1.2rem;
            box-shadow: var(--nav-shadow);
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 0.55rem;
            font-weight: 700;
            font-size: 1.06rem;
            color: #fff;
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .brand i {
            color: var(--accent);
            font-size: 1.15rem;
        }
        .nav-toggle {
            display: none;
            background: transparent;
            border: none;
            color: #fff;
            font-size: 1.4rem;
            cursor: pointer;
            padding: 0.5rem 0.75rem;
            border-radius: 12px;
            line-height: 1;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .nav-link-item {
            padding: 0.55rem 1rem;
            border-radius: 30px;
            color: rgba(255, 255, 255, 0.85);
            font-weight: 500;
            font-size: 0.95rem;
            display: inline-flex;
            align-items: center;
            transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
            position: relative;
        }
        .nav-link-item:hover {
            color: var(--accent);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-link-item.active {
            color: var(--accent);
            background: rgba(200, 241, 53, 0.12);
        }
        .nav-link-item.active::after {
            content: "";
            position: absolute;
            left: 1.2rem;
            right: 1.2rem;
            bottom: 0.2rem;
            height: 2px;
            border-radius: 2px;
            background: var(--accent);
        }
        .nav-cta {
            background: var(--accent);
            color: var(--primary-dark) !important;
            font-weight: 700;
            border-radius: 30px;
            padding: 0.55rem 1.4rem;
            margin-left: 0.5rem;
            box-shadow: 0 4px 14px rgba(200, 241, 53, 0.24);
        }
        .nav-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            color: var(--primary-dark) !important;
            box-shadow: var(--shadow-cta);
        }
        .nav-cta.active::after {
            display: none;
        }

        /* ---------- 分类页Hero ---------- */
        .category-hero {
            min-height: 40vh;
            display: flex;
            align-items: center;
            padding: 8rem 0 4rem;
            position: relative;
            background: linear-gradient(100deg, rgba(10, 42, 32, 0.94) 0%, rgba(15, 61, 46, 0.78) 55%, rgba(10, 42, 32, 0.55) 100%),
                url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: #fff;
        }
        .category-hero::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 90px;
            background: repeating-linear-gradient(135deg, rgba(200, 241, 53, 0.12) 0px, rgba(200, 241, 53, 0.12) 2px, transparent 2px, transparent 18px);
            pointer-events: none;
        }
        .hero-breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: rgba(0, 0, 0, 0.28);
            border: 1px solid rgba(255, 255, 255, 0.12);
            padding: 0.45rem 1.1rem;
            border-radius: 40px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.88);
            margin-bottom: 1.6rem;
            backdrop-filter: blur(8px);
        }
        .hero-breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            transition: color 0.2s;
        }
        .hero-breadcrumb a:hover {
            color: var(--accent);
        }
        .hero-breadcrumb .sep {
            color: rgba(255, 255, 255, 0.4);
        }
        .category-hero h1 {
            font-weight: 900;
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            line-height: 1.15;
            margin-bottom: 1rem;
            letter-spacing: -0.01em;
        }
        .category-hero h1 span {
            color: var(--accent);
        }
        .category-hero-desc {
            color: rgba(247, 244, 239, 0.92);
            font-size: 1.08rem;
            max-width: 640px;
            line-height: 1.8;
            margin-bottom: 1.8rem;
        }
        .hero-actions {
            display: flex;
            gap: 0.9rem;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            transition: all 0.25s ease;
            border: none;
        }
        .btn-accent {
            background: var(--accent);
            color: var(--primary-dark);
            padding: 0.85rem 2rem;
            border-radius: 12px;
            box-shadow: 0 8px 24px rgba(200, 241, 53, 0.28);
        }
        .btn-accent:hover {
            background: var(--accent-hover);
            transform: translateX(4px);
            color: var(--primary-dark);
            box-shadow: var(--shadow-cta);
        }
        .btn-outline-light {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.85);
            color: #fff;
            padding: 0.8rem 1.9rem;
            border-radius: 12px;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        /* ---------- 板块 ---------- */
        .section-white {
            background: var(--bg-white);
        }
        .section-beige {
            background: var(--bg);
        }
        .section-dark {
            background: var(--primary-dark);
            color: #fff;
        }
        .section-padding {
            padding: var(--section-padding) 0;
        }
        .section-head {
            margin-bottom: 2.8rem;
        }
        .section-head h2 {
            font-weight: 700;
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            margin-bottom: 0.75rem;
            position: relative;
            padding-left: 1rem;
            line-height: 1.25;
        }
        .section-head h2::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0.1em;
            bottom: 0.1em;
            width: 4px;
            border-radius: 4px;
            background: var(--accent);
        }
        .section-head p {
            color: var(--text-secondary);
            max-width: 720px;
            margin-bottom: 0;
        }

        /* ---------- 核心卖点 ---------- */
        .feature-section {
            padding: var(--section-padding) 0;
        }
        .feature-main-card {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            border-radius: 20px;
            padding: 2.5rem 2.2rem;
            color: #fff;
            height: 100%;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-hover);
        }
        .feature-main-card::after {
            content: "";
            position: absolute;
            right: -40px;
            bottom: -40px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(200, 241, 53, 0.1);
        }
        .feature-main-card .icon-box {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: rgba(200, 241, 53, 0.18);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent);
            margin-bottom: 1.3rem;
        }
        .feature-main-card h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 0.9rem;
        }
        .feature-main-card p {
            color: rgba(255, 255, 255, 0.82);
            line-height: 1.8;
            margin-bottom: 1.4rem;
        }
        .feature-main-card ul {
            list-style: none;
            padding: 0;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.7rem 1.4rem;
        }
        .feature-main-card li {
            position: relative;
            padding-left: 1.4rem;
            color: rgba(255, 255, 255, 0.9);
            font-size: 0.95rem;
        }
        .feature-main-card li::before {
            content: "\f00c";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 0.1rem;
            color: var(--accent);
            font-size: 0.8rem;
        }
        .feature-side-card {
            background: #fbfaf7;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 1.6rem 1.4rem;
            transition: box-shadow 0.3s, transform 0.3s;
            height: 100%;
        }
        .feature-side-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .feature-side-card .icon-badge {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(200, 241, 53, 0.2);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            margin-bottom: 1rem;
        }
        .feature-side-card h4 {
            font-size: 1.08rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .feature-side-card p {
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.65;
            margin-bottom: 0;
        }

        /* ---------- 课程网格 ---------- */
        .program-section {
            padding: var(--section-padding) 0;
        }
        .filter-pills {
            display: flex;
            gap: 0.7rem;
            flex-wrap: wrap;
            margin-bottom: 1.8rem;
        }
        .filter-btn {
            padding: 0.55rem 1.4rem;
            border-radius: 40px;
            border: 1px solid var(--border);
            background: #fbfaf7;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all 0.2s ease;
        }
        .filter-btn:hover {
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .filter-btn.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 6px 18px rgba(15, 61, 46, 0.18);
        }
        .program-card {
            background: #fff;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(227, 221, 210, 0.6);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .program-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .card-cover {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
        }
        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .program-card:hover .card-cover img {
            transform: scale(1.05);
        }
        .card-cover .level-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.3rem 0.8rem;
            border-radius: 30px;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.16);
        }
        .card-cover .duration {
            position: absolute;
            right: 12px;
            bottom: 12px;
            background: rgba(0, 0, 0, 0.55);
            color: #fff;
            font-size: 0.75rem;
            padding: 0.25rem 0.7rem;
            border-radius: 8px;
            backdrop-filter: blur(4px);
        }
        .card-body {
            padding: 1.4rem 1.4rem 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-body h3 {
            font-size: 1.12rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            line-height: 1.45;
        }
        .card-body p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.65;
            flex: 1;
            margin-bottom: 1rem;
        }
        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-secondary);
            border-top: 1px solid #f0ece4;
            padding-top: 0.9rem;
        }
        .card-meta .views i {
            margin-right: 0.3rem;
            color: var(--amber);
        }
        .difficulty-dots {
            display: inline-flex;
            align-items: center;
            gap: 3px;
        }
        .difficulty-dots .dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: #ddd6c9;
        }
        .difficulty-dots .dot.fill {
            background: var(--accent);
        }
        .difficulty-dots .dot.mid {
            background: var(--amber);
        }
        .difficulty-dots .dot.advanced {
            background: #e76f51;
        }

        /* ---------- 训练流程 ---------- */
        .process-section {
            padding: var(--section-padding) 0;
        }
        .process-section h2 {
            font-weight: 700;
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            position: relative;
            padding-left: 1rem;
            margin-bottom: 1rem;
        }
        .process-section h2::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0.1em;
            bottom: 0.1em;
            width: 4px;
            border-radius: 4px;
            background: var(--accent);
        }
        .process-intro {
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.8;
            max-width: 480px;
            margin-bottom: 1.8rem;
        }
        .process-timeline {
            position: relative;
            padding-left: 2rem;
        }
        .process-timeline::before {
            content: "";
            position: absolute;
            left: 8px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: linear-gradient(180deg, var(--accent), var(--primary-light), var(--border));
        }
        .process-step {
            position: relative;
            padding: 0.9rem 0 0.9rem 1.6rem;
            border-radius: 14px;
            transition: background 0.25s;
        }
        .process-step:hover {
            background: rgba(200, 241, 53, 0.05);
        }
        .process-step .step-num {
            position: absolute;
            left: -2rem;
            top: 0.8rem;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 0.7rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 3px solid #fff;
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.12);
        }
        .process-step h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.35rem;
        }
        .process-step p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 0;
            line-height: 1.65;
        }
        .btn-primary-solid {
            background: var(--primary);
            color: #fff;
            padding: 0.85rem 2.2rem;
            border-radius: 12px;
            margin-top: 1rem;
        }
        .btn-primary-solid:hover {
            background: var(--primary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        /* ---------- 数据条 ---------- */
        .stats-section {
            padding: 4.5rem 0;
            background: linear-gradient(135deg, var(--primary-dark), #061f17);
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent), transparent 60%);
        }
        .stats-section::after {
            content: "";
            position: absolute;
            right: -80px;
            bottom: -80px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(200, 241, 53, 0.08), transparent 70%);
        }
        .stat-item {
            text-align: center;
            padding: 1.2rem 0.8rem;
            position: relative;
            z-index: 1;
        }
        .stat-num {
            font-size: clamp(2rem, 4vw, 3.2rem);
            font-weight: 900;
            color: var(--accent);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }
        .stat-label {
            color: rgba(255, 255, 255, 0.78);
            font-size: 0.92rem;
            margin-top: 0.35rem;
        }

        /* ---------- FAQ ---------- */
        .faq-section {
            padding: var(--section-padding) 0;
        }
        .faq-section .section-head {
            text-align: center;
        }
        .faq-section .section-head h2::before {
            display: none;
        }
        .accordion {
            --bs-accordion-bg: #fff;
            --bs-accordion-border-color: var(--border);
            --bs-accordion-active-bg: #fbfaf7;
            --bs-accordion-active-color: var(--primary);
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
        }
        .accordion-item {
            border-bottom: 1px solid var(--border);
            background: #fff;
        }
        .accordion-item:last-child {
            border-bottom: none;
        }
        .accordion-button {
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            padding: 1.2rem 1.4rem;
            background: #fff;
            box-shadow: none;
            border-radius: 0 !important;
            transition: color 0.2s;
            position: relative;
        }
        .accordion-button:not(.collapsed) {
            background: #fbfaf7;
            color: var(--primary);
            box-shadow: none;
        }
        .accordion-button:focus {
            box-shadow: none;
        }
        .accordion-button::after {
            background-image: none;
            content: "\f067";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 0.85rem;
            color: var(--primary);
            width: 1rem;
            height: 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.3s ease;
        }
        .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            background-image: none;
            color: var(--accent);
        }
        .accordion-body {
            padding: 0 1.4rem 1.4rem;
            background: rgba(200, 241, 53, 0.03);
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.75;
            border-top: 1px solid rgba(227, 221, 210, 0.5);
            border-radius: 0 0 12px 12px;
        }

        /* ---------- CTA ---------- */
        .cta-section {
            padding: 5.5rem 0;
            position: relative;
            overflow: hidden;
            text-align: center;
            background: radial-gradient(circle at 20% 20%, rgba(200, 241, 53, 0.06), transparent 40%),
                radial-gradient(circle at 80% 70%, rgba(200, 241, 53, 0.05), transparent 35%),
                var(--primary-dark);
        }
        .cta-section::before {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent), transparent);
        }
        .cta-section h2 {
            font-weight: 900;
            font-size: clamp(2rem, 4vw, 3rem);
            color: #fff;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .cta-section h2 span {
            color: var(--accent);
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.68);
            max-width: 600px;
            margin: 0 auto 2rem;
            font-size: 1.05rem;
        }
        .cta-section .btn-accent {
            padding: 1rem 2.8rem;
            border-radius: 50px;
            font-size: 1.05rem;
        }

        /* ---------- 页脚 ---------- */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 4.5rem 0 1.8rem;
            position: relative;
        }
        .site-footer::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent), transparent 55%);
        }
        .footer-brand-name {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1rem;
        }
        .footer-brand-name i {
            color: var(--accent);
        }
        .footer-desc {
            font-size: 0.88rem;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 1.3rem;
        }
        .footer-social {
            display: flex;
            gap: 0.6rem;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.75);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.95rem;
            transition: all 0.2s ease;
        }
        .footer-social a:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-3px);
        }
        .footer-title {
            color: #fff;
            font-size: 1.02rem;
            font-weight: 700;
            margin-bottom: 1.1rem;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 0.7rem;
        }
        .footer-links a,
        .footer-links span {
            color: rgba(255, 255, 255, 0.62);
            font-size: 0.88rem;
            transition: color 0.2s ease;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-links i {
            margin-right: 0.4rem;
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 3rem;
            padding-top: 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.8rem;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ---------- 响应式 ---------- */
        @media (max-width: 991.98px) {
            .feature-main-card {
                margin-bottom: 1rem;
            }
            .process-section .row {
                gap: 2rem 0;
            }
            .stats-section {
                padding: 3.5rem 0;
            }
        }
        @media (max-width: 767.98px) {
            :root {
                --section-padding: 3.5rem;
            }
            .site-nav {
                top: 0.5rem;
                left: 0.6rem;
                right: 0.6rem;
            }
            .nav-pill {
                padding: 0.5rem 0.75rem;
                border-radius: 24px;
                flex-wrap: wrap;
            }
            .brand {
                font-size: 0.95rem;
            }
            .nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
                min-width: 44px;
                min-height: 44px;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding: 0.75rem 0.5rem 0.5rem;
                gap: 0.5rem;
                background: rgba(10, 42, 32, 0.96);
                border-radius: 18px;
                margin-top: 0.5rem;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-link-item {
                padding: 0.75rem 1rem;
                font-size: 1rem;
                border-radius: 12px;
            }
            .nav-link-item.active::after {
                left: 1rem;
                right: auto;
                width: 28px;
            }
            .nav-cta {
                margin-left: 0;
                text-align: center;
                justify-content: center;
            }
            .category-hero {
                min-height: 70vh;
                padding: 7rem 0 3rem;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .section-head {
                margin-bottom: 1.8rem;
            }
            .filter-pills {
                gap: 0.5rem;
            }
            .filter-btn {
                padding: 0.5rem 1rem;
                font-size: 0.82rem;
            }
            .card-body h3 {
                font-size: 1rem;
            }
            .feature-main-card ul {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 575.98px) {
            .category-hero h1 {
                font-size: 2rem;
            }
            .category-hero-desc {
                font-size: 0.95rem;
            }
            .program-card .card-cover img {
                object-fit: cover;
            }
            .cta-section {
                padding: 4rem 0;
            }
            .stat-num {
                font-size: 1.7rem;
            }
        }

/* roulang page: category2 */
:root {
  --primary: #0f3d2e;
  --primary-dark: #0a2a20;
  --primary-light: #1a5a42;
  --bg: #f7f4ef;
  --bg-white: #ffffff;
  --accent: #c8f135;
  --amber: #f5a623;
  --text: #1f2a24;
  --muted: #6b7a72;
  --border: #e3ddd2;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-pill: 60px;
  --radius-btn: 10px;
  --shadow-card: 0 3px 12px rgba(15,61,46,0.06);
  --shadow-hover: 0 12px 30px rgba(15,61,46,0.14);
  --shadow-nav: 0 8px 32px rgba(0,0,0,0.18);
  --shadow-cta: 0 8px 24px rgba(200,241,53,0.30);
  --transition: all 0.3s ease;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
  border: 0;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}
a:hover {
  color: var(--primary-light);
}
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}
.container {
  max-width: 1200px;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

/* ============ 悬浮胶囊导航 ============ */
.site-nav {
  position: fixed;
  top: 0.75rem;
  left: 1rem;
  right: 1rem;
  z-index: 1030;
  display: flex;
  justify-content: center;
}
.nav-pill {
  width: 100%;
  max-width: 1140px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: rgba(10,42,32,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-pill);
  padding: 0.55rem 0.8rem 0.55rem 1.25rem;
  box-shadow: var(--shadow-nav);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: #ffffff;
  font-size: 1.05rem;
  font-weight: 700;
  white-space: nowrap;
}
.brand i {
  color: var(--accent);
  font-size: 1.35rem;
}
.brand:hover {
  color: var(--accent);
}
.nav-toggle {
  display: none;
  color: #ffffff;
  font-size: 1.25rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.nav-toggle:hover {
  background: rgba(255,255,255,0.1);
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}
.nav-link-item {
  position: relative;
  display: inline-block;
  padding: 0.55rem 1rem;
  color: rgba(255,255,255,0.85);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: 30px;
  white-space: nowrap;
}
.nav-link-item:hover {
  color: var(--accent);
  background: rgba(255,255,255,0.08);
}
.nav-link-item.active {
  color: var(--accent);
  background: rgba(200,241,53,0.12);
}
.nav-link-item.active::after {
  content: "";
  position: absolute;
  left: 1rem;
  right: 1rem;
  bottom: 0.3rem;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
}
.nav-link-item.nav-cta {
  margin-left: 0.6rem;
  padding: 0.55rem 1.5rem;
  background: var(--accent);
  color: var(--primary-dark);
  font-weight: 700;
  border-radius: 30px;
  box-shadow: 0 4px 14px rgba(200,241,53,0.25);
}
.nav-link-item.nav-cta:hover {
  background: #d6f860;
  color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(200,241,53,0.3);
}

/* ============ 分类 Hero ============ */
.category-hero {
  position: relative;
  min-height: 42vh;
  display: flex;
  align-items: center;
  background: linear-gradient(90deg, rgba(10,42,32,0.94) 0%, rgba(10,42,32,0.72) 55%, rgba(10,42,32,0.5) 100%), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  padding: 9rem 0 4rem;
  margin-bottom: 0;
}
.category-hero-inner {
  position: relative;
  z-index: 2;
}
.hero-breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4rem;
  color: rgba(255,255,255,0.65);
  font-size: 0.85rem;
  margin-bottom: 1rem;
}
.hero-breadcrumb a {
  color: rgba(255,255,255,0.8);
}
.hero-breadcrumb a:hover {
  color: var(--accent);
}
.hero-breadcrumb .sep {
  color: rgba(255,255,255,0.4);
}
.category-hero h1 {
  color: #ffffff;
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: 0.01em;
  margin-bottom: 0.8rem;
}
.category-hero h1 .brand-highlight {
  color: var(--accent);
}
.category-hero p {
  color: rgba(247,244,239,0.9);
  font-size: 1.05rem;
  line-height: 1.8;
  max-width: 720px;
  margin-bottom: 0;
}

/* ============ 通用区块 ============ */
.section {
  padding: 5rem 0;
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.2rem;
}
.section-title-wrap {
  position: relative;
  padding-left: 1rem;
}
.section-title-wrap::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35rem;
  width: 4px;
  height: 70%;
  border-radius: 4px;
  background: var(--accent);
}
.section-title {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--primary);
  margin-bottom: 0.25rem;
}
.section-sub {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 0;
}
.bg-white {
  background: var(--bg-white);
}
.bg-muted {
  background: var(--bg);
}

/* ============ 筛选按钮 ============ */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 2.2rem;
}
.filter-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.45rem 1.4rem;
  border-radius: 30px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  color: var(--primary);
  font-size: 0.92rem;
  font-weight: 600;
  transition: var(--transition);
}
.filter-btn:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}
.filter-btn.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 6px 16px rgba(15,61,46,0.18);
}

/* ============ 课程卡片 ============ */
.course-card {
  border-radius: var(--radius-lg);
  background: var(--bg-white);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: var(--transition);
  height: 100%;
}
.course-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(200,241,53,0.7);
}
.course-link {
  display: block;
  height: 100%;
  color: inherit;
}
.course-link:hover {
  color: inherit;
}
.course-thumb {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
}
.course-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}
.course-card:hover .course-thumb img {
  transform: scale(1.04);
}
.course-badge {
  position: absolute;
  top: 0.9rem;
  left: 0.9rem;
  background: var(--accent);
  color: var(--primary-dark);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.25rem 0.8rem;
  border-radius: 6px;
  line-height: 1.6;
}
.course-duration {
  position: absolute;
  bottom: 0.9rem;
  right: 0.9rem;
  background: rgba(0,0,0,0.55);
  color: rgba(255,255,255,0.9);
  font-size: 0.78rem;
  padding: 0.2rem 0.7rem;
  border-radius: 6px;
  line-height: 1.6;
}
.course-body {
  padding: 1.4rem 1.4rem 1.5rem;
}
.course-body h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.5rem;
  line-height: 1.5;
}
.course-body p {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.75;
  margin-bottom: 1rem;
}
.course-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.83rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  padding-top: 0.85rem;
}
.diff {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}
.dot.mid {
  background: var(--amber);
}
.dot.high {
  background: #e76f51;
}

/* ============ 训练体系 ============ */
.feature-split {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  align-items: center;
}
.feature-copy {
  flex: 1 1 55%;
  min-width: 340px;
}
.feature-copy h2 {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 700;
  color: var(--primary);
  line-height: 1.35;
  margin-bottom: 1rem;
}
.feature-copy > p {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.9;
  margin-bottom: 1.6rem;
}
.feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
}
.feature-list li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.8rem 1rem;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text);
  transition: var(--transition);
}
.feature-list li:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-card);
}
.feature-list li i {
  color: var(--accent);
  font-size: 1rem;
  background: rgba(200,241,53,0.18);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.data-grid {
  flex: 1 1 38%;
  min-width: 300px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.data-card {
  background: var(--primary-dark);
  border-radius: var(--radius-lg);
  padding: 1.8rem 1.4rem;
  color: #ffffff;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}
.data-card:last-child {
  grid-column: span 2;
}
.data-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.data-card .num {
  display: block;
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.2;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.data-card .label {
  display: block;
  margin-top: 0.3rem;
  color: rgba(255,255,255,0.85);
  font-size: 0.92rem;
}

/* ============ 进阶流程 ============ */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  counter-reset: step;
}
.process-step {
  position: relative;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem 1.8rem;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}
.process-step:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.step-num {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--primary);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 1rem;
}
.process-step h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.5rem;
}
.process-step p {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.75;
  margin-bottom: 0;
}

/* ============ FAQ ============ */
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}
.accordion {
  --bs-accordion-border-color: var(--border);
  --bs-accordion-border-radius: var(--radius-lg);
  --bs-accordion-bg: var(--bg-white);
  --bs-accordion-inner-border-radius: var(--radius-lg);
  --bs-accordion-btn-focus-box-shadow: 0 0 0 0.2rem rgba(200,241,53,0.2);
  overflow: hidden;
}
.accordion-item {
  border: 1px solid var(--border);
  margin-bottom: 0.7rem;
  border-radius: var(--radius-lg) !important;
  overflow: hidden;
}
.accordion-button {
  padding: 1.1rem 1.4rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  background: var(--bg-white);
  border: none;
  transition: var(--transition);
}
.accordion-button:not(.collapsed) {
  color: var(--primary);
  background: rgba(200,241,53,0.06);
  box-shadow: none;
}
.accordion-button:focus {
  box-shadow: 0 0 0 0.2rem rgba(200,241,53,0.2);
  border-radius: var(--radius-lg);
}
.accordion-button::after {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%230f3d2e'%3E%3Cpath d='M8 2a.75.75 0 0 1 .75.75v4.5h4.5a.75.75 0 0 1 0 1.5h-4.5v4.5a.75.75 0 0 1-1.5 0v-4.5h-4.5a.75.75 0 0 1 0-1.5h4.5v-4.5A.75.75 0 0 1 8 2Z'/%3E%3C/svg%3E");
  transition: transform 0.3s ease;
}
.accordion-button:not(.collapsed)::after {
  transform: rotate(45deg);
}
.accordion-body {
  padding: 1.25rem 1.4rem 1.4rem;
  background: rgba(200,241,53,0.04);
  color: var(--text);
  font-size: 0.95rem;
  line-height: 1.8;
}

/* ============ CTA ============ */
.cta-section {
  position: relative;
  background: var(--primary-dark);
  padding: 5rem 0;
  text-align: center;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(rgba(200,241,53,0.12) 2px, transparent 2px);
  background-size: 44px 44px;
  pointer-events: none;
}
.cta-inner {
  position: relative;
  z-index: 2;
  max-width: 760px;
  margin: 0 auto;
}
.cta-inner h2 {
  color: #ffffff;
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 1rem;
}
.cta-inner h2 span {
  color: var(--accent);
}
.cta-inner p {
  color: rgba(255,255,255,0.65);
  font-size: 1.05rem;
  margin-bottom: 2rem;
}
.cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0.8rem 2.6rem;
  background: var(--accent);
  color: var(--primary-dark);
  font-size: 1.05rem;
  font-weight: 700;
  border-radius: 50px;
  box-shadow: var(--shadow-cta);
  transition: var(--transition);
}
.cta-btn:hover {
  background: #d6f860;
  color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(200,241,53,0.4);
}
.cta-btn i {
  margin-left: 0.5rem;
}

/* ============ 页脚 ============ */
.site-footer {
  background: var(--primary-dark);
  padding: 4.5rem 0 0;
  border-top: 2px solid transparent;
  background-image: linear-gradient(90deg, var(--accent), transparent 40%);
  background-repeat: no-repeat;
  background-size: 100% 2px;
  background-position: top left;
}
.footer-brand-name {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: #ffffff;
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}
.footer-brand-name i {
  color: var(--accent);
  font-size: 1.5rem;
}
.footer-desc {
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
  line-height: 1.85;
  margin-bottom: 1.2rem;
}
.footer-social {
  display: flex;
  gap: 0.7rem;
}
.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.85);
  font-size: 1.05rem;
  transition: var(--transition);
}
.footer-social a:hover {
  background: var(--accent);
  color: var(--primary-dark);
  transform: translateY(-3px);
}
.footer-title {
  color: #ffffff;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1.1rem;
}
.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-links li {
  margin-bottom: 0.65rem;
}
.footer-links a,
.footer-links span {
  color: rgba(255,255,255,0.7);
  font-size: 0.92rem;
  transition: var(--transition);
}
.footer-links a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-links a i {
  width: 20px;
  color: var(--accent);
  margin-right: 0.3rem;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  margin-top: 3rem;
  padding: 1.4rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.footer-bottom p {
  margin: 0;
  color: rgba(255,255,255,0.5);
  font-size: 0.85rem;
}

/* ============ 可访问性 ============ */
a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(200,241,53,0.5);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ============ 响应式 ============ */
@media (max-width: 992px) {
  .data-grid {
    grid-template-columns: 1fr 1fr;
  }
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }
  .feature-list {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 768px) {
  .section {
    padding: 3.5rem 0;
  }
  .nav-pill {
    flex-wrap: wrap;
    border-radius: 24px;
    padding: 0.6rem 0.9rem;
    position: relative;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .nav-menu {
    display: none;
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    padding: 0.6rem 0 0.4rem;
  }
  .nav-menu.open {
    display: flex;
  }
  .nav-link-item {
    width: 100%;
    border-radius: 12px;
    padding: 0.8rem 1rem;
    min-height: 44px;
  }
  .nav-link-item.nav-cta {
    margin-left: 0;
    margin-top: 0.3rem;
    justify-content: center;
  }
  .nav-link-item.active::after {
    display: none;
  }
  .category-hero {
    min-height: 60vh;
    padding: 8rem 0 3rem;
  }
  .category-hero h1 {
    font-size: clamp(1.7rem, 8vw, 2.6rem);
  }
  .category-hero p {
    font-size: 0.98rem;
  }
  .course-card {
    margin-bottom: 0;
  }
  .process-steps {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}
@media (max-width: 576px) {
  .brand {
    font-size: 0.95rem;
  }
  .course-body h3 {
    font-size: 1.05rem;
  }
  .data-grid {
    grid-template-columns: 1fr;
  }
  .data-card:last-child {
    grid-column: span 1;
  }
  .filter-btn {
    flex: 1 1 auto;
    padding: 0.4rem 1rem;
    font-size: 0.88rem;
  }
  .cta-btn {
    width: 100%;
  }
}

/* roulang page: category3 */
:root {
            --primary: #0f3d2e;
            --primary-dark: #0a2a20;
            --bg-warm: #f7f4ef;
            --bg-white: #ffffff;
            --accent: #c8f135;
            --amber: #f5a623;
            --text-main: #1f2a24;
            --text-secondary: #6b7a72;
            --border-light: #e3ddd2;
            --radius-lg: 20px;
            --radius-md: 16px;
            --radius-sm: 8px;
            --shadow-card: 0 3px 12px rgba(15, 61, 46, 0.06);
            --shadow-hover: 0 12px 30px rgba(15, 61, 46, 0.14);
            --shadow-nav: 0 8px 32px rgba(0, 0, 0, 0.18);
            --shadow-cta: 0 8px 24px rgba(200, 241, 53, 0.30);
            --space-section: 5rem;
            --font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-family);
            background-color: var(--bg-warm);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: var(--primary);
            transition: color 0.2s ease;
        }

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

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

        .container {
            max-width: 1200px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        section {
            padding: var(--space-section) 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            border-radius: 12px;
            padding: 0.75rem 1.75rem;
            font-weight: 600;
            font-size: 1rem;
            transition: all 0.25s ease;
            border: 2px solid transparent;
        }

        .btn-accent {
            background: var(--accent);
            color: var(--primary);
            border-color: var(--accent);
            box-shadow: var(--shadow-cta);
        }

        .btn-accent:hover {
            background: #d6ff4d;
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(200, 241, 53, 0.4);
        }

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

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

        .section-title-wrap {
            margin-bottom: 2.5rem;
        }

        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: var(--primary);
            position: relative;
            padding-left: 18px;
            margin-bottom: 0.75rem;
            line-height: 1.3;
        }

        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 4px;
            border-radius: 4px;
            background: var(--accent);
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.7;
        }

        /* ========== 悬浮胶囊导航 ========== */
        .site-nav {
            position: fixed;
            top: 0.75rem;
            left: 1rem;
            right: 1rem;
            z-index: 1030;
            pointer-events: none;
        }

        .nav-pill {
            max-width: 1140px;
            margin: 0 auto;
            background: rgba(10, 42, 32, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-radius: 60px;
            padding: 0.65rem 1.25rem 0.65rem 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: var(--shadow-nav);
            pointer-events: auto;
            position: relative;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 0.65rem;
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.01em;
            white-space: nowrap;
        }

        .brand i {
            font-size: 1.35rem;
            color: var(--accent);
        }

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

        .nav-toggle {
            display: none;
            background: transparent;
            border: none;
            color: #fff;
            font-size: 1.35rem;
            cursor: pointer;
            padding: 0.4rem 0.6rem;
            border-radius: 10px;
            line-height: 1;
        }

        .nav-toggle:focus {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 1.2rem;
        }

        .nav-link-item {
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 0.45rem 0.3rem;
            position: relative;
            white-space: nowrap;
            transition: color 0.2s ease;
        }

        .nav-link-item::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            border-radius: 2px;
            background: var(--accent);
            transform: scaleX(0);
            transition: transform 0.25s ease;
        }

        .nav-link-item:hover {
            color: var(--accent);
        }

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

        .nav-link-item.active {
            color: #fff;
            font-weight: 600;
        }

        .nav-cta {
            background: var(--accent);
            color: var(--primary);
            border-radius: 30px;
            padding: 0.55rem 1.4rem;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all 0.25s ease;
        }

        .nav-cta::after {
            display: none;
        }

        .nav-cta:hover {
            background: #d6ff4d;
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(200, 241, 53, 0.35);
        }

        /* ========== 分类 Hero ========== */
        .category-hero {
            position: relative;
            min-height: 40vh;
            padding: 160px 0 80px;
            display: flex;
            align-items: center;
            background-color: var(--primary-dark);
            overflow: hidden;
        }

        .category-hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        .category-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(10, 42, 32, 0.92) 0%, rgba(10, 42, 32, 0.65) 60%, rgba(10, 42, 32, 0.35) 100%);
        }

        .category-hero-inner {
            position: relative;
            z-index: 2;
            color: #fff;
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 1.4rem;
        }

        .breadcrumb-nav a {
            color: rgba(255, 255, 255, 0.7);
        }

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

        .breadcrumb-nav .fa-chevron-right {
            font-size: 0.7rem;
            opacity: 0.6;
        }

        .category-hero-title {
            font-size: clamp(1.8rem, 4.5vw, 3rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 1rem;
            color: #fff;
            letter-spacing: 0.01em;
        }

        .category-hero-subtitle {
            font-size: 1.1rem;
            line-height: 1.7;
            color: rgba(247, 244, 239, 0.9);
            max-width: 640px;
            margin-bottom: 0;
        }

        .category-hero-actions {
            margin-top: 2rem;
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        /* ========== 筛选按钮 ========== */
        .filter-section {
            background: var(--bg-white);
            padding-bottom: 0;
        }

        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            margin-bottom: 2.5rem;
        }

        .filter-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            border: 1px solid var(--border-light);
            background: var(--bg-warm);
            color: var(--primary);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 0.55rem 1.5rem;
            border-radius: 40px;
            cursor: pointer;
            transition: all 0.25s ease;
            min-height: 44px;
        }

        .filter-btn:hover {
            border-color: var(--primary);
            background: rgba(15, 61, 46, 0.05);
        }

        .filter-btn.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 16px rgba(15, 61, 46, 0.25);
        }

        /* ========== 课程卡片网格 ========== */
        .path-grid-section {
            background: var(--bg-white);
            padding-top: 2.5rem;
        }

        .path-card {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            height: 100%;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .path-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .path-card-cover {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: linear-gradient(135deg, #0f3d2e, #0a2a20);
        }

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

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

        .path-card-cover.img-fallback {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        }

        .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            z-index: 2;
            letter-spacing: 0.02em;
        }

        .card-duration {
            position: absolute;
            bottom: 12px;
            right: 12px;
            background: rgba(0, 0, 0, 0.55);
            color: #fff;
            font-size: 0.75rem;
            padding: 0.25rem 0.65rem;
            border-radius: 6px;
            z-index: 2;
            backdrop-filter: blur(4px);
        }

        .path-card-body {
            padding: 1.25rem 1.4rem 1.4rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .path-card-title {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }

        .path-card-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 1rem;
            flex: 1;
        }

        .path-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--border-light);
            padding-top: 0.9rem;
        }

        .difficulty-dots {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .difficulty-dots .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--border-light);
        }

        .difficulty-dots .dot-filled {
            background: var(--accent);
        }

        .difficulty-dots .dot-filled-amber {
            background: var(--amber);
        }

        .difficulty-dots .dot-filled-orange {
            background: #e76f51;
        }

        .view-count {
            font-size: 0.82rem;
            color: var(--text-secondary);
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }

        .view-count i {
            font-size: 0.85rem;
        }

        .path-card.hide {
            display: none;
        }

        .path-card.fade-in {
            animation: cardFadeIn 0.4s ease forwards;
        }

        @keyframes cardFadeIn {
            from {
                opacity: 0;
                transform: translateY(10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ========== 优势卖点 ========== */
        .feature-section {
            background: var(--bg-warm);
        }

        .feature-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 2rem 1.6rem;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            height: 100%;
            transition: all 0.3s ease;
            text-align: center;
        }

        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(200, 241, 53, 0.6);
        }

        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            background: rgba(200, 241, 53, 0.15);
            color: var(--primary);
            font-size: 1.6rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.2rem;
        }

        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 0.6rem;
        }

        .feature-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ========== 适用场景 ========== */
        .scenario-section {
            background: var(--primary-dark);
            color: #fff;
        }

        .scenario-section .section-title {
            color: #fff;
        }

        .scenario-section .section-title::before {
            background: var(--accent);
        }

        .scenario-section .section-subtitle {
            color: rgba(255, 255, 255, 0.65);
        }

        .scenario-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 2rem 1.6rem;
            height: 100%;
            backdrop-filter: blur(8px);
            transition: all 0.3s ease;
        }

        .scenario-card:hover {
            background: rgba(255, 255, 255, 0.09);
            border-color: rgba(200, 241, 53, 0.4);
            transform: translateY(-4px);
        }

        .scenario-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: rgba(200, 241, 53, 0.2);
            color: var(--accent);
            font-size: 1.4rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.2rem;
        }

        .scenario-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.6rem;
        }

        .scenario-card p {
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ========== 学习流程 ========== */
        .process-section {
            background: var(--bg-white);
        }

        .process-timeline {
            display: flex;
            gap: 1.5rem;
            flex-wrap: wrap;
            justify-content: center;
            margin-top: 2.5rem;
        }

        .process-step {
            flex: 1;
            min-width: 180px;
            max-width: 220px;
            text-align: center;
            position: relative;
            padding-top: 3rem;
        }

        .process-step::before {
            content: '';
            position: absolute;
            top: 32px;
            left: calc(50% + 38px);
            right: calc(-50% + 38px);
            height: 2px;
            background: linear-gradient(90deg, var(--accent), var(--border-light));
            display: none;
        }

        .process-step:last-child::before {
            display: none;
        }

        .step-circle {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.4rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1rem;
            box-shadow: 0 6px 20px rgba(15, 61, 46, 0.25);
            position: relative;
            z-index: 2;
        }

        .step-number {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: var(--amber);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-variant-numeric: tabular-nums;
        }

        .process-step h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 0.4rem;
        }

        .process-step p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--bg-warm);
        }

        .accordion {
            --bs-accordion-border-color: var(--border-light);
            --bs-accordion-btn-color: var(--text-main);
            --bs-accordion-active-color: var(--primary);
            --bs-accordion-active-bg: rgba(200, 241, 53, 0.04);
        }

        .accordion-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md) !important;
            padding: 0;
            margin-bottom: 1rem;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            background: #fff;
        }

        .accordion-button {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            background: #fff;
            padding: 1.25rem 1.5rem;
            box-shadow: none;
            border: none;
            gap: 0.75rem;
        }

        .accordion-button::after {
            display: none;
        }

        .accordion-button::before {
            content: '+';
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1rem;
            font-weight: 400;
            transition: all 0.3s ease;
            flex-shrink: 0;
            line-height: 1;
        }

        .accordion-button:not(.collapsed)::before {
            transform: rotate(45deg);
            background: var(--accent);
            color: var(--primary);
        }

        .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: rgba(200, 241, 53, 0.04);
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }

        .accordion-body {
            background: rgba(200, 241, 53, 0.02);
            padding: 1.25rem 1.5rem;
            font-size: 0.95rem;
            line-height: 1.75;
            color: var(--text-secondary);
            border-top: 1px solid var(--border-light);
        }

        /* ========== CTA ========== */
        .cta-section {
            background: var(--primary-dark);
            position: relative;
            overflow: hidden;
            padding: 5rem 0;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: radial-gradient(circle, rgba(200, 241, 53, 0.08) 1px, transparent 1px);
            background-size: 40px 40px;
            pointer-events: none;
        }

        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
            max-width: 720px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: clamp(2rem, 4vw, 2.6rem);
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 1rem;
        }

        .cta-content p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 2rem;
        }

        .cta-buttons {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            justify-content: center;
        }

        .btn-cta-primary {
            background: var(--accent);
            color: var(--primary);
            border-radius: 50px;
            padding: 1rem 2.5rem;
            font-size: 1.05rem;
            font-weight: 700;
            box-shadow: var(--shadow-cta);
            border: 2px solid var(--accent);
        }

        .btn-cta-primary:hover {
            background: #d6ff4d;
            color: var(--primary);
            transform: translateY(-3px);
            box-shadow: 0 16px 40px rgba(200, 241, 53, 0.4);
        }

        .btn-cta-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
            border-radius: 50px;
            padding: 1rem 2rem;
            font-weight: 600;
        }

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

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.75);
            padding-top: 4rem;
            border-top: 2px solid transparent;
            border-image: linear-gradient(90deg, var(--accent), transparent) 1;
        }

        .footer-brand-name {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1rem;
        }

        .footer-brand-name i {
            color: var(--accent);
            font-size: 1.4rem;
        }

        .footer-desc {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.8;
            margin-bottom: 1.2rem;
        }

        .footer-social {
            display: flex;
            gap: 0.8rem;
        }

        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.75);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            transition: all 0.25s ease;
        }

        .footer-social a:hover {
            background: var(--accent);
            color: var(--primary);
            transform: translateY(-3px);
        }

        .footer-title {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1.2rem;
            position: relative;
            padding-bottom: 0.6rem;
        }

        .footer-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 2px;
            background: var(--accent);
        }

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

        .footer-links li {
            margin-bottom: 0.6rem;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
            transition: color 0.2s ease;
        }

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

        .footer-links span {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-links i {
            margin-right: 0.4rem;
            color: var(--accent);
            width: 16px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 1.5rem 0;
            margin-top: 3rem;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
        }

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

        /* ========== 响应式 ========== */
        @media (max-width: 991.98px) {
            .nav-pill {
                flex-wrap: wrap;
            }

            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                gap: 0.5rem;
                padding-top: 1rem;
                padding-bottom: 0.5rem;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                margin-top: 0.8rem;
            }

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

            .nav-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
                min-width: 44px;
                min-height: 44px;
            }

            .nav-link-item {
                width: 100%;
                padding: 0.8rem 0.5rem;
                font-size: 1rem;
                border-radius: 8px;
            }

            .nav-link-item::after {
                display: none;
            }

            .nav-link-item.active {
                background: rgba(200, 241, 53, 0.1);
                color: var(--accent);
            }

            .nav-cta {
                margin-top: 0.5rem;
                text-align: center;
                justify-content: center;
                width: 100%;
                padding: 0.8rem 1.4rem;
            }

            .category-hero {
                min-height: 45vh;
                padding-top: 140px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .process-step {
                min-width: 30%;
            }
        }

        @media (max-width: 767.98px) {
            :root {
                --space-section: 3.5rem;
            }

            .category-hero {
                min-height: 80vh;
                padding: 140px 0 60px;
            }

            .category-hero-title {
                font-size: 1.8rem;
            }

            .category-hero-subtitle {
                font-size: 1rem;
            }

            .filter-bar {
                gap: 0.5rem;
            }

            .filter-btn {
                padding: 0.5rem 1.1rem;
                font-size: 0.85rem;
            }

            .process-step {
                min-width: 100%;
                padding-top: 2.5rem;
            }

            .process-step::before {
                display: none;
            }

            .card-tag {
                font-size: 0.7rem;
                padding: 0.25rem 0.7rem;
            }

            .path-card-cover {
                aspect-ratio: 16 / 10;
            }

            .cta-buttons .btn {
                width: 100%;
            }

            .footer-main .col-md-6 {
                margin-bottom: 1.5rem;
            }
        }

        @media (max-width: 575.98px) {
            .nav-pill {
                padding: 0.6rem 0.9rem;
            }

            .brand span {
                font-size: 0.95rem;
            }

            .nav-link-item {
                font-size: 0.95rem;
            }

            .category-hero-actions {
                flex-direction: column;
            }

            .category-hero-actions .btn {
                width: 100%;
            }

            .section-title {
                font-size: 1.5rem;
            }
        }