/* roulang page: index */
:root {
            --bg: #0A1628;
            --bg-deep: #080D18;
            --bg-block: #0E1E36;
            --panel: rgba(255, 255, 255, 0.05);
            --panel-strong: rgba(255, 255, 255, 0.08);
            --accent: #00E5A0;
            --accent-bright: #37F0B8;
            --danger: #FF6B45;
            --text: #EFF5FF;
            --text-muted: #9FB2CC;
            --text-dim: #5E7290;
            --line: rgba(255, 255, 255, 0.08);
            --line-top: rgba(255, 255, 255, 0.16);
            --line-bottom: rgba(0, 229, 160, 0.10);
            --card-radius: 16px;
            --card-radius-sm: 12px;
            --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.5);
            --glow: 0 0 20px rgba(0, 229, 160, 0.35);
            --glow-hover: 0 0 32px rgba(0, 229, 160, 0.55);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            background: var(--bg-deep);
            color: var(--text);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a {
            color: var(--text);
            text-decoration: none;
            transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
        }

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

        /* ====== 左侧导航 ====== */
        .site-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: 240px;
            height: 100vh;
            background: rgba(10, 22, 40, 0.95);
            border-right: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            flex-direction: column;
            z-index: 1000;
        }

        .sidebar-brand {
            height: 72px;
            display: flex;
            align-items: center;
            padding: 0 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            flex-shrink: 0;
        }

        .sidebar-brand .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--accent) 0%, #007a5e 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 12px;
            font-size: 18px;
            font-weight: 900;
            color: #06281E;
        }

        .sidebar-brand .logo-text {
            font-size: 18px;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: var(--text);
            white-space: nowrap;
        }

        .sidebar-nav {
            flex: 1;
            padding: 24px 12px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .sidebar-nav .nav-label {
            font-size: 11px;
            text-transform: uppercase;
            letter-spacing: 0.14em;
            color: var(--text-dim);
            padding: 0 12px;
            margin-bottom: 8px;
            font-weight: 600;
        }

        .sidebar-nav a {
            display: flex;
            align-items: center;
            height: 48px;
            padding: 0 12px;
            border-radius: 10px;
            color: var(--text-muted);
            font-size: 15px;
            font-weight: 500;
            gap: 12px;
            position: relative;
            transition: background 0.2s ease, color 0.2s ease;
        }

        .sidebar-nav a i {
            width: 20px;
            text-align: center;
            font-size: 15px;
            color: var(--text-dim);
            transition: color 0.2s ease;
        }

        .sidebar-nav a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text);
        }

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

        .sidebar-nav a.active {
            background: rgba(0, 229, 160, 0.12);
            color: var(--text);
            font-weight: 600;
        }

        .sidebar-nav a.active::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 20px;
            background: var(--accent);
            border-radius: 0 2px 2px 0;
            box-shadow: 0 0 8px rgba(0, 229, 160, 0.5);
        }

        .sidebar-nav a.active i {
            color: var(--accent);
        }

        .sidebar-footer {
            padding: 16px 24px 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .sidebar-footer p {
            font-size: 12px;
            color: var(--text-dim);
            line-height: 1.6;
        }

        /* ====== 移动端导航 ====== */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1100;
            background: rgba(10, 22, 40, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .mobile-topbar {
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
        }

        .mobile-topbar .logo-text {
            font-size: 18px;
            font-weight: 800;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .mobile-topbar .logo-text .logo-mark {
            width: 30px;
            height: 30px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--accent), #007a5e);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 900;
            color: #06281E;
        }

        .mobile-menu-btn {
            background: none;
            border: none;
            color: var(--text);
            font-size: 22px;
            cursor: pointer;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
        }

        .mobile-menu-btn:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        .mobile-menu {
            display: none;
            padding: 8px 16px 16px;
            background: rgba(10, 22, 40, 0.98);
        }

        .mobile-menu.expanded {
            display: block;
        }

        .mobile-menu a {
            display: flex;
            align-items: center;
            height: 48px;
            padding: 0 12px;
            border-radius: 10px;
            color: var(--text-muted);
            font-size: 16px;
            font-weight: 500;
            gap: 10px;
        }

        .mobile-menu a i {
            width: 20px;
            text-align: center;
            color: var(--text-dim);
        }

        .mobile-menu a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text);
        }

        .mobile-menu a.active {
            background: rgba(0, 229, 160, 0.12);
            color: var(--text);
            font-weight: 600;
        }

        .mobile-menu a.active i {
            color: var(--accent);
        }

        /* ====== 主内容 ====== */
        .site-main {
            margin-left: 240px;
            min-height: 100vh;
        }

        .section {
            padding: 96px 24px;
            position: relative;
        }

        .section-alt {
            background: var(--bg-block);
        }

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

        .section-title-wrap {
            display: flex;
            align-items: center;
            margin-bottom: 48px;
        }

        .section-title-wrap::before {
            content: "";
            width: 4px;
            height: 28px;
            background: var(--accent);
            border-radius: 2px;
            margin-right: 16px;
            box-shadow: 0 0 12px rgba(0, 229, 160, 0.3);
        }

        .section-title {
            font-size: clamp(28px, 3vw, 40px);
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--text);
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            margin-top: 4px;
            max-width: 640px;
        }

        /* ====== Hero ====== */
        .hero {
            min-height: 70vh;
            display: flex;
            align-items: center;
            position: relative;
            background-image: linear-gradient(105deg, rgba(8, 13, 24, 0.92) 0%, rgba(8, 13, 24, 0.75) 45%, rgba(0, 229, 160, 0.08) 130%), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            padding: 80px 48px 120px;
            overflow: hidden;
        }

        .hero::after {
            content: "";
            position: absolute;
            right: -20px;
            bottom: -40px;
            width: 400px;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent));
            opacity: 0.08;
            transform: rotate(-20deg);
        }

        .hero-content {
            max-width: 680px;
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 107, 69, 0.15);
            border: 1px solid rgba(255, 107, 69, 0.3);
            color: var(--danger);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 24px;
        }

        .hero-badge i {
            font-size: 12px;
        }

        .hero h1 {
            font-size: clamp(42px, 6vw, 72px);
            font-weight: 900;
            letter-spacing: -0.02em;
            line-height: 1.15;
            color: var(--text);
            margin-bottom: 20px;
        }

        .hero h1 .accent-text {
            color: var(--accent);
        }

        .hero-desc {
            font-size: 18px;
            line-height: 1.7;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 36px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 28px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all 0.25s ease;
            gap: 8px;
        }

        .btn-primary {
            background: var(--accent);
            color: #06281E;
            box-shadow: 0 0 20px rgba(0, 229, 160, 0.35);
        }

        .btn-primary:hover {
            background: var(--accent-bright);
            box-shadow: 0 0 32px rgba(0, 229, 160, 0.55);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 12px rgba(0, 229, 160, 0.3);
        }

        .btn-secondary {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--text);
        }

        .btn-secondary:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(0, 229, 160, 0.05);
        }

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

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

        .scroll-indicator {
            position: absolute;
            bottom: 32px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 40px;
            border: 2px solid rgba(255, 255, 255, 0.3);
            border-radius: 12px;
            display: flex;
            justify-content: center;
            padding-top: 6px;
        }

        .scroll-indicator span {
            width: 3px;
            height: 8px;
            background: var(--accent);
            border-radius: 2px;
            animation: scrollPulse 1.8s infinite;
        }

        @keyframes scrollPulse {
            0% {
                transform: translateY(0);
                opacity: 1;
            }
            50% {
                transform: translateY(8px);
                opacity: 0.4;
            }
            100% {
                transform: translateY(0);
                opacity: 1;
            }
        }

        /* ====== 背景网格装饰 ====== */
        .grid-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
            background-size: 80px 80px;
            pointer-events: none;
            z-index: 0;
        }

        /* ====== 时间线 ====== */
        .timeline {
            position: relative;
            max-width: 900px;
            margin: 0 auto;
            padding: 20px 0;
        }

        .timeline::before {
            content: "";
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, rgba(0, 229, 160, 0.4), rgba(255, 255, 255, 0.12));
        }

        .timeline-item {
            position: relative;
            width: 50%;
            padding-right: 48px;
            margin-bottom: 48px;
        }

        .timeline-item:nth-child(even) {
            margin-left: 50%;
            padding-right: 0;
            padding-left: 48px;
        }

        .timeline-dot {
            position: absolute;
            top: 32px;
            right: -6px;
            width: 12px;
            height: 12px;
            background: rgba(0, 229, 160, 0.9);
            border-radius: 50%;
            box-shadow: 0 0 12px rgba(0, 229, 160, 0.35);
            z-index: 2;
        }

        .timeline-item:nth-child(even) .timeline-dot {
            right: auto;
            left: -6px;
        }

        .timeline-card {
            background: var(--panel);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--card-radius);
            padding: 28px;
            box-shadow: var(--shadow);
            backdrop-filter: blur(8px);
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
        }

        .timeline-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover), 0 0 0 1px rgba(0, 229, 160, 0.3);
            border-color: rgba(0, 229, 160, 0.3);
        }

        .tl-date {
            font-size: 20px;
            font-weight: 700;
            color: var(--accent);
            font-variant-numeric: tabular-nums;
            margin-bottom: 4px;
        }

        .tl-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }

        .tl-location {
            font-size: 14px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 12px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            padding: 3px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            line-height: 1.6;
        }

        .badge-danger {
            background: rgba(255, 107, 69, 0.15);
            color: var(--danger);
            border: 1px solid rgba(255, 107, 69, 0.3);
        }

        .badge-accent {
            background: rgba(0, 229, 160, 0.12);
            color: var(--accent);
            border: 1px solid rgba(0, 229, 160, 0.3);
        }

        .badge-dim {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-dim);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        /* ====== 嘉宾卡片 ====== */
        .speakers-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }

        .speaker-card {
            background: var(--panel);
            border-radius: var(--card-radius);
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: var(--shadow);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }

        .speaker-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover), 0 0 0 1px rgba(0, 229, 160, 0.3);
            border-color: rgba(0, 229, 160, 0.3);
        }

        .speaker-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }

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

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

        .speaker-body {
            padding: 24px;
        }

        .speaker-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 4px;
        }

        .speaker-role {
            font-size: 13px;
            color: var(--accent);
            font-weight: 500;
            margin-bottom: 12px;
            display: block;
        }

        .speaker-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ====== 票种对比 ====== */
        .tickets-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            align-items: stretch;
        }

        .ticket-card {
            background: var(--panel);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--card-radius);
            padding: 36px 28px;
            display: flex;
            flex-direction: column;
            position: relative;
            box-shadow: var(--shadow);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }

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

        .ticket-card.featured {
            border-color: var(--accent);
            box-shadow: 0 0 20px rgba(0, 229, 160, 0.35), var(--shadow);
        }

        .ticket-card.featured:hover {
            box-shadow: 0 0 32px rgba(0, 229, 160, 0.55), var(--shadow-hover);
        }

        .ticket-tag {
            position: absolute;
            top: -12px;
            right: 20px;
            background: var(--danger);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 20px;
            box-shadow: 0 4px 12px rgba(255, 107, 69, 0.3);
        }

        .ticket-name {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }

        .ticket-price {
            font-size: 28px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 20px;
            font-variant-numeric: tabular-nums;
        }

        .ticket-price small {
            font-size: 14px;
            font-weight: 400;
            color: var(--text-dim);
        }

        .ticket-features {
            list-style: none;
            margin: 0 0 28px;
            flex: 1;
        }

        .ticket-features li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 6px 0;
            font-size: 14px;
            color: var(--text-muted);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .ticket-features li:last-child {
            border-bottom: none;
        }

        .ticket-features li i {
            color: var(--accent);
            font-size: 13px;
            flex-shrink: 0;
        }

        .ticket-card .btn {
            width: 100%;
        }

        /* ====== 报名CTA ====== */
        .signup-wrap {
            background: var(--panel);
            border-radius: 24px;
            border-top: 1px solid var(--line-top);
            border-bottom: 1px solid var(--line-bottom);
            padding: 64px;
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(12px);
            box-shadow: var(--shadow);
        }

        .signup-wrap::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--accent), transparent);
            opacity: 0.4;
        }

        .signup-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .signup-info h3 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .signup-info p {
            color: var(--text-muted);
            margin-bottom: 16px;
            font-size: 15px;
        }

        .signup-info .highlight {
            color: var(--accent);
            font-weight: 600;
        }

        .signup-form .form-group {
            margin-bottom: 20px;
        }

        .signup-form label {
            display: block;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-muted);
            margin-bottom: 6px;
        }

        .signup-form input,
        .signup-form select {
            width: 100%;
            height: 48px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 12px;
            padding: 0 16px;
            color: var(--text);
            font-size: 15px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
        }

        .signup-form input:focus,
        .signup-form select:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 4px rgba(0, 229, 160, 0.15);
            background: rgba(255, 255, 255, 0.08);
        }

        .signup-form input::placeholder {
            color: var(--text-dim);
        }

        .signup-form select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%239FB2CC' stroke-width='1.5'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
        }

        .signup-form .btn {
            width: 100%;
            margin-top: 8px;
        }

        /* ====== 资讯列表 ====== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .news-row {
            display: flex;
            align-items: stretch;
            background: var(--panel);
            border-radius: var(--card-radius);
            border: 1px solid rgba(255, 255, 255, 0.08);
            padding: 24px;
            gap: 20px;
            box-shadow: var(--shadow);
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
        }

        .news-row:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover), 0 0 0 1px rgba(0, 229, 160, 0.3);
            border-color: rgba(0, 229, 160, 0.3);
        }

        .news-date-block {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            min-width: 64px;
            padding: 12px;
            background: rgba(0, 229, 160, 0.08);
            border-radius: var(--card-radius-sm);
            border: 1px solid rgba(0, 229, 160, 0.15);
            align-self: flex-start;
        }

        .news-date-block .day {
            font-size: 24px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }

        .news-date-block .month {
            font-size: 12px;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        .news-body {
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .news-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
            transition: color 0.2s ease;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-row:hover .news-body h3 {
            color: var(--accent);
        }

        .news-excerpt {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: auto;
            flex-wrap: wrap;
        }

        .news-meta .badge {
            font-size: 11px;
            padding: 2px 10px;
        }

        .news-meta time {
            font-size: 12px;
            color: var(--text-dim);
            font-variant-numeric: tabular-nums;
        }

        .read-more {
            margin-left: auto;
            font-size: 13px;
            font-weight: 500;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .news-empty {
            grid-column: 1 / -1;
            border: 2px dashed rgba(255, 255, 255, 0.2);
            border-radius: var(--card-radius);
            padding: 48px;
            text-align: center;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.02);
        }

        .news-empty i {
            font-size: 48px;
            color: var(--text-dim);
            margin-bottom: 16px;
            display: block;
        }

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

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

        .accordion-item {
            background: var(--panel);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--card-radius-sm);
            margin-bottom: 16px;
            transition: border-color 0.25s ease, background 0.25s ease;
            overflow: hidden;
        }

        .accordion-item:hover {
            background: rgba(255, 255, 255, 0.07);
        }

        .accordion-title {
            display: flex;
            align-items: center;
            min-height: 56px;
            padding: 12px 20px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text);
            cursor: pointer;
            position: relative;
            gap: 12px;
            justify-content: space-between;
        }

        .accordion-title:hover,
        .accordion-title:focus {
            color: var(--accent);
            outline: none;
        }

        .accordion-title::after {
            content: "+";
            font-size: 22px;
            color: var(--text-dim);
            transition: transform 0.3s ease, color 0.3s ease;
            flex-shrink: 0;
        }

        .accordion-item.is-active .accordion-title::after {
            content: "−";
            color: var(--accent);
        }

        .accordion-item.is-active {
            background: rgba(0, 229, 160, 0.06);
            border-color: rgba(0, 229, 160, 0.2);
        }

        .accordion-content {
            padding: 0 20px 20px;
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-muted);
        }

        .accordion-content p {
            margin-bottom: 10px;
        }

        /* ====== 页脚 ====== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 64px 24px 24px;
            clear: both;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            max-width: 1280px;
            margin: 0 auto;
        }

        .footer-brand .logo-text {
            font-size: 22px;
            font-weight: 800;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-brand .logo-text .logo-mark {
            width: 34px;
            height: 34px;
            border-radius: 9px;
            background: linear-gradient(135deg, var(--accent), #007a5e);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 900;
            color: #06281E;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            max-width: 320px;
            margin-bottom: 20px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 20px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-muted);
            padding: 6px 0;
            transition: color 0.2s ease, padding-left 0.2s ease;
        }

        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-col .contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-muted);
            padding: 6px 0;
        }

        .footer-col .contact-item i {
            color: var(--text-dim);
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin-top: 48px;
            padding-top: 24px;
            text-align: center;
            font-size: 12px;
            color: var(--text-dim);
        }

        /* ====== 按钮禁用态 ====== */
        .btn:disabled {
            opacity: 0.5;
            cursor: not-allowed;
            box-shadow: none;
        }

        /* ====== 可访问性 ====== */
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* ====== 响应式 ====== */
        @media (max-width: 1023px) {
            .site-sidebar {
                display: none;
            }
            .site-main {
                margin-left: 0;
            }
            .mobile-nav {
                display: block;
            }
            .site-main {
                padding-top: 64px;
            }
            .hero {
                padding: 60px 24px 100px;
                min-height: 60vh;
            }
            .section {
                padding: 56px 24px;
            }
            .signup-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .signup-wrap {
                padding: 40px 24px;
            }
        }

        @media (max-width: 639px) {
            .section {
                padding: 56px 16px;
            }
            .hero {
                padding: 48px 16px 80px;
            }
            .hero h1 {
                font-size: 36px;
            }
            .hero-desc {
                font-size: 16px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .speakers-grid,
            .tickets-grid,
            .news-grid {
                grid-template-columns: 1fr;
            }
            .timeline::before {
                left: 14px;
            }
            .timeline-item,
            .timeline-item:nth-child(even) {
                width: 100%;
                margin-left: 0;
                padding-right: 0;
                padding-left: 44px;
            }
            .timeline-dot,
            .timeline-item:nth-child(even) .timeline-dot {
                left: 8px;
                right: auto;
            }
            .timeline-card {
                padding: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .news-row {
                padding: 16px;
            }
            .signup-wrap {
                padding: 24px 16px;
                border-radius: 16px;
            }
            .section-title-wrap {
                margin-bottom: 32px;
            }
            .section-title {
                font-size: 24px;
            }
        }

        @media (min-width: 640px) and (max-width: 1023px) {
            .speakers-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .tickets-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

/* roulang page: category1 */
:root {
            --bg: #0A1628;
            --bg-deep: #080D18;
            --panel: rgba(255, 255, 255, 0.05);
            --accent: #00E5A0;
            --accent-bright: #37F0B8;
            --danger: #FF6B45;
            --text: #EFF5FF;
            --text-muted: #9FB2CC;
            --text-dim: #5E7290;
            --border-light: rgba(255, 255, 255, 0.08);
            --radius: 16px;
            --radius-sm: 12px;
            --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.5);
            --glow: 0 0 20px rgba(0, 229, 160, 0.35);
            --glow-hover: 0 0 32px rgba(0, 229, 160, 0.55);
            --sidebar-w: 240px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            background: var(--bg-deep);
            background-image: radial-gradient(circle at 70% 10%, rgba(0, 229, 160, 0.04) 0%, transparent 60%),
                              linear-gradient(180deg, var(--bg-deep) 0%, var(--bg) 100%);
            color: var(--text);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                              linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 80px 80px;
            pointer-events: none;
            z-index: 0;
        }

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

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

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

        .main-content {
            margin-left: var(--sidebar-w);
            min-height: 100vh;
            position: relative;
            z-index: 1;
        }

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

        .section {
            padding: 96px 0;
        }

        .section + .section {
            border-top: 1px solid var(--border-light);
        }

        .section-title {
            font-size: clamp(28px, 3vw, 40px);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .section-title::before {
            content: '';
            display: block;
            width: 4px;
            height: 28px;
            border-radius: 2px;
            background: var(--accent);
            flex-shrink: 0;
        }

        .section-desc {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.75;
            max-width: 680px;
            margin-bottom: 48px;
        }

        /* ===== 侧边栏 ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-w);
            height: 100vh;
            background: rgba(10, 22, 40, 0.95);
            border-right: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            flex-direction: column;
            z-index: 999;
            backdrop-filter: blur(12px);
        }

        .sidebar-brand {
            height: 72px;
            display: flex;
            align-items: center;
            padding: 0 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .logo-text {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: var(--text);
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--accent) 0%, rgba(0, 229, 160, 0.6) 100%);
            color: #06281E;
            font-weight: 900;
            font-size: 16px;
            box-shadow: 0 0 16px rgba(0, 229, 160, 0.3);
        }

        .sidebar-nav {
            flex: 1;
            padding: 24px 12px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .nav-label {
            font-size: 11px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            color: var(--text-dim);
            padding: 0 12px;
            margin-bottom: 10px;
        }

        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            height: 48px;
            padding: 0 14px;
            border-radius: 10px;
            color: var(--text-muted);
            font-size: 15px;
            font-weight: 500;
            transition: all 0.25s ease;
        }

        .sidebar-nav a i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: inherit;
        }

        .sidebar-nav a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text);
        }

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

        .sidebar-nav a.active {
            background: rgba(0, 229, 160, 0.12);
            color: var(--accent);
            box-shadow: inset 3px 0 0 var(--accent);
            font-weight: 600;
        }

        .sidebar-footer {
            padding: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .sidebar-footer a {
            font-size: 13px;
            color: var(--text-muted);
        }

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

        .sidebar-footer span {
            font-size: 12px;
            color: var(--text-dim);
        }

        /* ===== 移动端顶栏 ===== */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 64px;
            background: rgba(10, 22, 40, 0.98);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            z-index: 999;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            backdrop-filter: blur(12px);
        }

        .mobile-brand {
            font-size: 18px;
            font-weight: 800;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .mobile-brand .logo-mark {
            width: 28px;
            height: 28px;
            font-size: 13px;
            border-radius: 8px;
        }

        .menu-toggle {
            background: none;
            border: none;
            color: var(--text);
            font-size: 22px;
            cursor: pointer;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }

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

        .mobile-menu {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            width: 100%;
            background: rgba(10, 22, 40, 0.97);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 8px 16px 16px;
            z-index: 998;
            backdrop-filter: blur(16px);
            flex-direction: column;
            gap: 4px;
        }

        .mobile-menu.expanded {
            display: flex;
        }

        .mobile-menu a {
            display: flex;
            align-items: center;
            gap: 12px;
            height: 48px;
            padding: 0 12px;
            border-radius: 10px;
            color: var(--text-muted);
            font-size: 15px;
            font-weight: 500;
        }

        .mobile-menu a.active {
            background: rgba(0, 229, 160, 0.12);
            color: var(--accent);
            font-weight: 600;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 28px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--accent);
            color: #06281E;
            box-shadow: var(--glow);
        }

        .btn-primary:hover {
            background: var(--accent-bright);
            box-shadow: var(--glow-hover);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 12px rgba(0, 229, 160, 0.2);
        }

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

        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--text);
        }

        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
        }

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

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

        .btn-lg {
            height: 54px;
            padding: 0 36px;
            font-size: 16px;
            border-radius: 14px;
        }

        /* ===== 徽章 ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            height: 24px;
            padding: 0 10px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-muted);
            letter-spacing: 0.02em;
        }

        .badge-accent {
            background: rgba(0, 229, 160, 0.15);
            color: var(--accent);
        }

        .badge-danger {
            background: rgba(255, 107, 69, 0.15);
            color: var(--danger);
        }

        .badge-dim {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-dim);
        }

        /* ===== Hero条幅 ===== */
        .page-hero {
            position: relative;
            padding: 120px 0 100px;
            background: url('/assets/images/backpic/back-1.webp') center 40% / cover no-repeat;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(105deg, rgba(8, 13, 24, 0.94) 0%, rgba(8, 13, 24, 0.78) 50%, rgba(0, 229, 160, 0.08) 130%);
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -40px;
            right: 10%;
            width: 380px;
            height: 120px;
            background: linear-gradient(135deg, transparent 45%, rgba(0, 229, 160, 0.08) 50%, transparent 55%);
            transform: rotate(-8deg);
            pointer-events: none;
        }

        .page-hero .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 680px;
        }

        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            height: 28px;
            padding: 0 14px;
            border-radius: 999px;
            background: rgba(0, 229, 160, 0.12);
            border: 1px solid rgba(0, 229, 160, 0.2);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .page-hero h1 {
            font-size: clamp(38px, 5vw, 56px);
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
        }

        .page-hero p.hero-desc {
            font-size: 18px;
            line-height: 1.7;
            color: var(--text-muted);
            margin-bottom: 32px;
            max-width: 560px;
        }

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

        .scroll-indicator {
            position: absolute;
            bottom: 32px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 40px;
            border: 2px solid rgba(255, 255, 255, 0.2);
            border-radius: 12px;
            display: flex;
            justify-content: center;
            padding-top: 6px;
        }

        .scroll-indicator::before {
            content: '';
            width: 4px;
            height: 8px;
            background: var(--accent);
            border-radius: 2px;
            animation: scrollHint 2s ease-in-out infinite;
        }

        @keyframes scrollHint {
            0%, 100% { transform: translateY(0); opacity: 1; }
            50% { transform: translateY(8px); opacity: 0.4; }
        }

        /* ===== 图文分栏 ===== */
        .split-block {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 64px;
            align-items: center;
        }

        .split-block .text-side h2 {
            font-size: clamp(28px, 3vw, 40px);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .split-block .text-side h2::before {
            content: '';
            display: block;
            width: 4px;
            height: 28px;
            border-radius: 2px;
            background: var(--accent);
            flex-shrink: 0;
        }

        .split-block .text-side p {
            color: var(--text-muted);
            margin-bottom: 16px;
            line-height: 1.8;
        }

        .split-block .text-side .feature-list {
            list-style: none;
            margin: 24px 0 0;
            padding: 0;
        }

        .split-block .text-side .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-light);
            color: var(--text);
            font-size: 15px;
        }

        .split-block .text-side .feature-list li i {
            color: var(--accent);
            font-size: 16px;
            margin-top: 3px;
        }

        .split-block .image-side {
            position: relative;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .split-block .image-side::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(8, 13, 24, 0.4) 100%);
            border-radius: 16px;
            pointer-events: none;
        }

        .split-block .image-side img {
            width: 100%;
            height: 420px;
            object-fit: cover;
            border-radius: 16px;
        }

        .split-block .image-side .img-caption {
            position: absolute;
            bottom: 16px;
            left: 20px;
            z-index: 2;
            color: var(--text);
            font-size: 13px;
            font-weight: 500;
            background: rgba(8, 13, 24, 0.6);
            padding: 4px 12px;
            border-radius: 999px;
            backdrop-filter: blur(4px);
        }

        /* ===== 数据统计 ===== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 48px;
        }

        .stat-card {
            background: var(--panel);
            border: 1px solid transparent;
            border-top: 1px solid rgba(255, 255, 255, 0.16);
            border-bottom: 1px solid rgba(0, 229, 160, 0.10);
            border-radius: 16px;
            padding: 32px 24px;
            text-align: center;
            transition: all 0.3s ease;
            box-shadow: var(--shadow);
        }

        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover), 0 0 0 1px rgba(0, 229, 160, 0.3);
        }

        .stat-card .stat-num {
            font-size: 42px;
            font-weight: 900;
            color: var(--accent);
            line-height: 1.1;
            font-variant-numeric: tabular-nums;
            margin-bottom: 8px;
        }

        .stat-card .stat-num span {
            font-size: 24px;
        }

        .stat-card .stat-label {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* ===== 时间线 ===== */
        .timeline {
            position: relative;
            padding: 24px 0 0 32px;
            margin-top: 32px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 10px;
            top: 0;
            width: 2px;
            height: 100%;
            background: linear-gradient(180deg, var(--accent) 0%, rgba(0, 229, 160, 0.2) 100%);
            border-radius: 1px;
        }

        .timeline-item {
            position: relative;
            padding: 0 0 40px 32px;
        }

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

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -28px;
            top: 8px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: rgba(0, 229, 160, 0.9);
            box-shadow: 0 0 12px rgba(0, 229, 160, 0.6);
        }

        .timeline-item .tl-date {
            font-size: 20px;
            font-weight: 800;
            color: var(--accent);
            font-variant-numeric: tabular-nums;
            margin-bottom: 4px;
        }

        .timeline-item .tl-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }

        .timeline-item .tl-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 14px;
            color: var(--text-dim);
        }

        .timeline-item .tl-meta i {
            font-size: 13px;
        }

        /* ===== 流程 ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 48px;
        }

        .process-step {
            position: relative;
            background: var(--panel);
            border-radius: 16px;
            padding: 32px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.16);
            border-bottom: 1px solid rgba(0, 229, 160, 0.10);
            box-shadow: var(--shadow);
            transition: all 0.3s ease;
        }

        .process-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover), 0 0 0 1px rgba(0, 229, 160, 0.2);
        }

        .process-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: rgba(0, 229, 160, 0.12);
            color: var(--accent);
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 16px;
            font-variant-numeric: tabular-nums;
        }

        .process-step h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== 卡片 ===== */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--panel);
            border: 1px solid transparent;
            border-top: 1px solid rgba(255, 255, 255, 0.16);
            border-bottom: 1px solid rgba(0, 229, 160, 0.10);
            border-radius: 16px;
            padding: 32px 24px;
            box-shadow: var(--shadow);
            transition: all 0.3s ease;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover), 0 0 0 1px rgba(0, 229, 160, 0.3);
        }

        .feature-card .card-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(0, 229, 160, 0.12);
            color: var(--accent);
            font-size: 22px;
            margin-bottom: 20px;
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .feature-card p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .accordion {
            max-width: 860px;
            margin: 0 auto;
            background: transparent;
            border: none;
            border-radius: 0;
        }

        .accordion-item {
            background: var(--panel);
            border: 1px solid var(--border-light);
            border-radius: 16px;
            margin-bottom: 16px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .accordion-item.is-active {
            background: rgba(0, 229, 160, 0.06);
            border-color: rgba(0, 229, 160, 0.3);
        }

        .accordion-title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            height: 48px;
            line-height: 1.4;
            padding: 0 24px;
            border: none;
            border-radius: 16px;
            background: transparent;
            transition: color 0.3s ease;
        }

        .accordion-title:hover {
            color: var(--accent);
            background: transparent;
        }

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

        .accordion-title .acc-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--accent);
            transition: transform 0.3s ease;
        }

        .accordion-item.is-active .acc-icon {
            transform: rotate(45deg);
        }

        .accordion-content {
            padding: 0 24px 20px;
            border: none;
            background: transparent;
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
        }

        .accordion-content p {
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: url('/assets/images/backpic/back-2.png') center 40% / cover no-repeat;
            position: relative;
            border-radius: 24px;
            overflow: hidden;
            padding: 80px 64px;
            text-align: center;
            box-shadow: var(--shadow);
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8, 13, 24, 0.92) 0%, rgba(8, 13, 24, 0.7) 100%);
        }

        .cta-section .cta-inner {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: clamp(28px, 3.5vw, 42px);
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-section p {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 32px;
        }

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

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 64px 0 32px;
            margin-left: var(--sidebar-w);
            position: relative;
            z-index: 1;
        }

        .footer-grid {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 1fr;
            gap: 48px;
        }

        .footer-brand .logo-text {
            font-size: 22px;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-muted);
            padding: 6px 0;
            transition: color 0.3s ease;
        }

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

        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-muted);
            padding: 6px 0;
            line-height: 1.6;
        }

        .contact-item i {
            color: var(--accent);
            font-size: 14px;
            margin-top: 4px;
            flex-shrink: 0;
        }

        .footer-bottom {
            max-width: 1280px;
            margin: 48px auto 0;
            padding: 24px 24px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            text-align: center;
            font-size: 12px;
            color: var(--text-dim);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1023px) {
            .sidebar {
                display: none;
            }

            .mobile-topbar {
                display: flex;
            }

            .main-content {
                margin-left: 0;
                padding-top: 64px;
            }

            .site-footer {
                margin-left: 0;
            }

            .section {
                padding: 64px 0;
            }

            .split-block {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .split-block .image-side img {
                height: 320px;
            }

            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }

            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 639px) {
            .container {
                padding: 0 16px;
            }

            .section {
                padding: 56px 0;
            }

            .page-hero {
                padding: 80px 0 72px;
            }

            .page-hero h1 {
                font-size: 36px;
            }

            .page-hero p.hero-desc {
                font-size: 16px;
            }

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

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

            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .stat-card {
                padding: 24px 16px;
            }

            .stat-card .stat-num {
                font-size: 32px;
            }

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

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

            .timeline {
                padding-left: 24px;
            }

            .timeline-item {
                padding-left: 24px;
            }

            .timeline-item::before {
                left: -22px;
            }

            .cta-section {
                padding: 48px 24px;
            }

            .cta-section .cta-actions {
                flex-direction: column;
            }

            .cta-section .cta-actions .btn {
                width: 100%;
            }

            .scroll-indicator {
                display: none;
            }

            .accordion-title {
                padding: 0 16px;
                font-size: 15px;
            }

            .accordion-content {
                padding: 0 16px 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                padding: 0 16px;
            }

            .footer-bottom {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        @media (min-width: 640px) and (max-width: 1023px) {
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }

            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) and (max-width: 1280px) {
            .cards-grid {
                grid-template-columns: repeat(3, 1fr);
            }

            .process-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }

/* roulang page: article */
:root {
            --bg: #0A1628;
            --bg-deep: #080D18;
            --bg-alt: #0E1E36;
            --panel: rgba(255, 255, 255, 0.05);
            --accent: #00E5A0;
            --accent-bright: #37F0B8;
            --danger: #FF6B45;
            --text: #EFF5FF;
            --text-muted: #9FB2CC;
            --text-dim: #5E7290;
            --border: rgba(255, 255, 255, 0.08);
            --border-top: rgba(255, 255, 255, 0.16);
            --border-accent: rgba(0, 229, 160, 0.10);
            --radius: 16px;
            --radius-sm: 12px;
            --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.5);
            --glow: 0 0 20px rgba(0, 229, 160, 0.35);
            --glow-hover: 0 0 32px rgba(0, 229, 160, 0.55);
            --sidebar-w: 240px;
            --transition: all .25s cubic-bezier(.4, 0, .2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background: var(--bg-deep);
            background-image: linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
            color: var(--text);
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body::before {
            content: '';
            position: fixed;
            inset: 0;
            background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 80px 80px;
            pointer-events: none;
            z-index: 0;
        }

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

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

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

        .row {
            max-width: 100%;
            margin: 0;
        }

        /* ============ 左侧导航 ============ */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-w);
            height: 100vh;
            background: rgba(10, 22, 40, 0.95);
            border-right: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            flex-direction: column;
            z-index: 100;
            backdrop-filter: blur(20px);
        }

        .sidebar-brand {
            height: 72px;
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            flex-shrink: 0;
        }

        .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--accent), var(--accent-bright));
            color: #06281E;
            font-size: 18px;
            font-weight: 900;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            box-shadow: 0 0 14px rgba(0, 229, 160, 0.35);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--text);
            white-space: nowrap;
        }

        .sidebar-nav {
            flex: 1;
            padding: 24px 16px;
            display: flex;
            flex-direction: column;
            gap: 4px;
            overflow-y: auto;
        }

        .nav-label {
            font-size: 12px;
            font-weight: 600;
            color: var(--text-dim);
            letter-spacing: 0.08em;
            padding: 0 12px 12px;
            text-transform: uppercase;
        }

        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            height: 48px;
            padding: 0 14px;
            border-radius: 10px;
            color: var(--text-muted);
            font-size: 15px;
            font-weight: 500;
            position: relative;
            transition: var(--transition);
        }

        .sidebar-nav a i {
            width: 20px;
            text-align: center;
            font-size: 16px;
        }

        .sidebar-nav a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text);
            transform: translateX(2px);
        }

        .sidebar-nav a.active {
            background: rgba(0, 229, 160, 0.12);
            color: var(--accent);
            font-weight: 600;
        }

        .sidebar-nav a.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 20px;
            background: var(--accent);
            border-radius: 0 4px 4px 0;
            box-shadow: 0 0 10px rgba(0, 229, 160, 0.5);
        }

        .sidebar-footer {
            padding: 16px 24px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex-shrink: 0;
        }

        .sidebar-footer a {
            color: var(--text-dim);
            font-size: 13px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

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

        .sidebar-footer span {
            color: var(--text-dim);
            font-size: 12px;
            letter-spacing: 0.02em;
        }

        /* ============ 内容区 ============ */
        .content-wrapper {
            margin-left: var(--sidebar-w);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            position: relative;
            z-index: 1;
        }

        /* ============ 移动端顶栏 ============ */
        .mobile-topbar {
            display: none;
            position: sticky;
            top: 0;
            z-index: 200;
            height: 64px;
            background: rgba(10, 22, 40, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
        }

        .mobile-logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .mobile-logo .logo-mark {
            width: 32px;
            height: 32px;
            font-size: 16px;
            border-radius: 8px;
        }

        .mobile-logo .logo-text {
            font-size: 18px;
        }

        .menu-toggle {
            width: 40px;
            height: 40px;
            border: 1px solid var(--border);
            border-radius: 10px;
            background: var(--panel);
            color: var(--text);
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }

        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--accent);
            color: var(--accent);
        }

        .mobile-menu-panel {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: rgba(10, 22, 40, 0.97);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            padding: 12px 16px 20px;
            z-index: 199;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
        }

        .mobile-menu-panel.open {
            display: block;
        }

        .mobile-menu-panel a {
            display: flex;
            align-items: center;
            gap: 12px;
            height: 48px;
            padding: 0 16px;
            border-radius: 10px;
            color: var(--text);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
        }

        .mobile-menu-panel a:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        .mobile-menu-panel a.active {
            background: rgba(0, 229, 160, 0.12);
            color: var(--accent);
        }

        .mobile-menu-panel a i {
            width: 20px;
            text-align: center;
        }

        /* ============ 文章页通用 ============ */
        .article-page {
            flex: 1;
            padding: 48px 24px 80px;
            position: relative;
            z-index: 1;
        }

        .container-narrow {
            max-width: 720px;
            margin: 0 auto;
        }

        /* ============ 面包屑 ============ */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--text-dim);
            margin-bottom: 32px;
        }

        .breadcrumb a {
            color: var(--text-muted);
            transition: var(--transition);
        }

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

        .crumb-sep {
            color: rgba(255, 255, 255, 0.2);
            font-size: 10px;
        }

        .crumb-current {
            color: var(--text-muted);
            max-width: 320px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* ============ 文章头部 ============ */
        .article-header {
            margin-bottom: 40px;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 16px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 14px;
            border-radius: 999px;
            background: rgba(0, 229, 160, 0.12);
            color: var(--accent);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.02em;
            line-height: 1.4;
            border: 1px solid rgba(0, 229, 160, 0.2);
        }

        .badge-outline {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.18);
            color: var(--text-muted);
        }

        .article-title {
            font-size: clamp(30px, 4vw, 44px);
            font-weight: 900;
            line-height: 1.3;
            letter-spacing: -0.02em;
            margin: 0 0 24px;
            color: var(--text);
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-muted);
        }

        .article-meta i {
            color: var(--text-dim);
            margin-right: 4px;
        }

        .meta-divider {
            color: rgba(255, 255, 255, 0.15);
        }

        .read-count {
            font-variant-numeric: tabular-nums;
            color: var(--text);
            font-weight: 600;
        }

        /* ============ 文章正文 ============ */
        .article-body {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
        }

        .article-body h2 {
            font-size: 24px;
            font-weight: 800;
            margin: 44px 0 18px;
            padding-left: 16px;
            border-left: 4px solid var(--accent);
            line-height: 1.45;
        }

        .article-body h3 {
            font-size: 20px;
            font-weight: 700;
            margin: 36px 0 14px;
            line-height: 1.5;
            color: var(--text);
        }

        .article-body p {
            margin-bottom: 1.2em;
        }

        .article-body img {
            max-width: 100%;
            height: auto;
            border-radius: 16px;
            margin: 28px 0;
            box-shadow: var(--shadow);
        }

        .article-body figure {
            margin: 28px 0;
        }

        .article-body figcaption {
            font-size: 13px;
            color: var(--text-dim);
            text-align: center;
            margin-top: 8px;
        }

        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: rgba(0, 229, 160, 0.06);
            padding: 18px 24px;
            border-radius: 0 12px 12px 0;
            margin: 28px 0;
            color: var(--text-muted);
            font-style: normal;
        }

        .article-body blockquote p {
            margin: 0;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 1.2em 1.4em;
        }

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

        .article-body a {
            color: var(--accent);
            border-bottom: 1px solid transparent;
        }

        .article-body a:hover {
            border-bottom-color: var(--accent);
        }

        .article-body strong {
            color: var(--text);
            font-weight: 700;
        }

        .article-body hr {
            border: none;
            border-top: 1px solid var(--border);
            margin: 36px 0;
        }

        /* ============ 内容未找到 ============ */
        .not-found {
            text-align: center;
            padding: 80px 32px;
            background: var(--panel);
            border: 1px solid var(--border);
            border-top-color: var(--border-top);
            border-bottom-color: var(--border-accent);
            border-radius: 16px;
            box-shadow: var(--shadow);
        }

        .not-found i {
            font-size: 56px;
            color: var(--text-dim);
            margin-bottom: 20px;
        }

        .not-found h1 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .not-found p {
            color: var(--text-muted);
            margin-bottom: 28px;
        }

        /* ============ 按钮 ============ */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 28px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            font-family: inherit;
            line-height: 1;
            white-space: nowrap;
        }

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

        .btn-primary {
            background: var(--accent);
            color: #06281E;
            box-shadow: var(--glow);
        }

        .btn-primary:hover {
            background: var(--accent-bright);
            color: #06281E;
            box-shadow: var(--glow-hover);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 8px rgba(0, 229, 160, 0.3);
        }

        .btn-outline {
            background: transparent;
            color: var(--text);
            border: 1px solid rgba(255, 255, 255, 0.25);
        }

        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(0, 229, 160, 0.06);
        }

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

        /* ============ 上一篇 / 下一篇 ============ */
        .post-pager {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 56px;
            padding-top: 40px;
            border-top: 1px solid var(--border);
        }

        .pager-link {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px;
            background: var(--panel);
            border-radius: 14px;
            border: 1px solid var(--border);
            border-top-color: var(--border-top);
            border-bottom-color: var(--border-accent);
            transition: var(--transition);
            position: relative;
        }

        .pager-link:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(0, 229, 160, 0.3);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }

        .pager-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(0, 229, 160, 0.12);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
        }

        .pager-info {
            display: flex;
            flex-direction: column;
            gap: 4px;
            min-width: 0;
        }

        .pager-label {
            font-size: 12px;
            color: var(--text-dim);
            letter-spacing: 0.04em;
        }

        .pager-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            white-space: normal;
        }

        .pager-link:hover .pager-title {
            color: var(--accent);
        }

        .pager-next {
            text-align: right;
            flex-direction: row-reverse;
        }

        /* ============ 相关推荐 ============ */
        .related-section {
            margin-top: 64px;
            padding-top: 48px;
            border-top: 1px solid var(--border);
        }

        .section-title {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 32px;
            display: flex;
            align-items: center;
            gap: 14px;
            letter-spacing: -0.01em;
        }

        .section-title::before {
            content: '';
            width: 4px;
            height: 28px;
            background: var(--accent);
            border-radius: 2px;
            box-shadow: 0 0 12px rgba(0, 229, 160, 0.4);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            background: var(--panel);
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border);
            border-top-color: var(--border-top);
            border-bottom-color: var(--border-accent);
            box-shadow: var(--shadow);
            transition: var(--transition);
            display: block;
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover), 0 0 0 1px rgba(0, 229, 160, 0.3);
            border-color: rgba(0, 229, 160, 0.3);
        }

        .related-thumb {
            overflow: hidden;
            aspect-ratio: 16 / 10;
        }

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

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

        .related-body {
            padding: 20px;
        }

        .related-body .badge {
            font-size: 11px;
            padding: 4px 10px;
        }

        .related-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin: 12px 0 8px;
            line-height: 1.4;
            color: var(--text);
            transition: var(--transition);
        }

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

        .related-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ============ CTA 区块 ============ */
        .article-cta {
            margin-top: 64px;
            padding: 40px 44px;
            background: var(--panel);
            border-radius: 20px;
            border: 1px solid var(--border);
            border-top-color: var(--border-top);
            border-bottom-color: var(--border-accent);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: var(--shadow);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }

        .article-cta::after {
            content: '';
            position: absolute;
            right: -30px;
            bottom: -30px;
            width: 160px;
            height: 160px;
            background: radial-gradient(circle, rgba(0, 229, 160, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-copy h2 {
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .cta-copy p {
            color: var(--text-muted);
            font-size: 15px;
            margin: 0;
        }

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

        /* ============ 页脚 ============ */
        .site-footer {
            background: #080D18;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 56px 48px 24px;
            position: relative;
            z-index: 1;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 48px;
            max-width: 1280px;
            margin: 0 auto;
        }

        .footer-brand .logo-text {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--text);
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 14px;
            padding: 5px 0;
            transition: var(--transition);
        }

        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-muted);
            font-size: 14px;
            padding: 6px 0;
            line-height: 1.6;
        }

        .contact-item i {
            margin-top: 4px;
            color: var(--text-dim);
            flex-shrink: 0;
        }

        .footer-bottom {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            text-align: center;
            color: var(--text-dim);
            font-size: 12px;
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1023.98px) {
            .sidebar {
                display: none;
            }

            .content-wrapper {
                margin-left: 0;
            }

            .mobile-topbar {
                display: flex;
            }

            .article-page {
                padding: 32px 20px 64px;
            }

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

            .site-footer {
                padding: 48px 24px 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 639.98px) {
            .article-page {
                padding: 24px 16px 48px;
            }

            .article-title {
                font-size: 28px;
            }

            .article-meta {
                gap: 8px;
            }

            .post-pager {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .pager-next {
                flex-direction: row;
                text-align: left;
            }

            .pager-icon {
                width: 36px;
                height: 36px;
            }

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

            .article-cta {
                padding: 28px 24px;
                flex-direction: column;
                align-items: flex-start;
            }

            .cta-actions {
                width: 100%;
            }

            .cta-actions .btn {
                flex: 1;
                padding: 0 16px;
            }

            .breadcrumb {
                margin-bottom: 24px;
                font-size: 12px;
            }

            .crumb-current {
                max-width: 220px;
            }
        }

        @media (max-width: 479.98px) {
            .article-page {
                padding: 20px 12px 40px;
            }

            .site-footer {
                padding: 40px 16px 16px;
            }

            .footer-brand p {
                font-size: 13px;
            }

            .cta-actions {
                flex-direction: column;
            }

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

/* roulang page: category2 */
:root {
            --bg: #0A1628;
            --bg-deep: #080D18;
            --panel: rgba(255,255,255,0.05);
            --accent: #00E5A0;
            --accent-bright: #37F0B8;
            --danger: #FF6B45;
            --text: #EFF5FF;
            --text-muted: #9FB2CC;
            --text-dim: #5E7290;
            --border: rgba(255,255,255,0.08);
            --border-strong: rgba(255,255,255,0.16);
            --card-shadow: 0 8px 24px rgba(0,0,0,0.35);
            --card-shadow-hover: 0 12px 32px rgba(0,0,0,0.5);
            --glow: rgba(0,229,160,0.35);
            --radius: 16px;
            --radius-sm: 12px;
            --sidebar-w: 240px;
            --font-stack: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg-deep);
            background-image: radial-gradient(circle at 15% 10%, rgba(10,22,40,0.9), transparent 45%),
                linear-gradient(180deg, var(--bg-deep) 0%, var(--bg) 55%, var(--bg-deep) 100%);
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            background-image: linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
            background-size: 80px 80px;
            pointer-events: none;
            z-index: 0;
        }

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

        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.25s ease;
        }

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

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

        input, select {
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

        .main-wrapper {
            margin-left: var(--sidebar-w);
            min-height: 100vh;
            position: relative;
            z-index: 1;
        }

        /* ===== 左侧边栏 ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-w);
            height: 100vh;
            background: rgba(10,22,40,0.95);
            backdrop-filter: blur(12px);
            border-right: 1px solid rgba(255,255,255,0.06);
            display: flex;
            flex-direction: column;
            z-index: 100;
        }

        .sidebar-brand {
            height: 72px;
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 24px;
            border-bottom: 1px solid var(--border);
        }

        .logo-mark {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--accent), var(--accent-bright));
            color: #06281E;
            font-size: 19px;
            font-weight: 900;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 18px var(--glow);
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: var(--text);
            white-space: nowrap;
        }

        .sidebar-nav {
            flex: 1;
            padding: 24px 14px;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .nav-label {
            font-size: 11px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.14em;
            color: var(--text-dim);
            padding: 0 12px;
            margin-bottom: 8px;
        }

        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            height: 48px;
            padding: 0 14px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            border-left: 3px solid transparent;
            transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
        }

        .sidebar-nav a i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: var(--text-dim);
            transition: color 0.2s ease;
        }

        .sidebar-nav a:hover {
            background: rgba(255,255,255,0.06);
            color: var(--text);
        }

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

        .sidebar-nav a.active {
            background: rgba(0,229,160,0.12);
            border-left-color: var(--accent);
            color: var(--text);
        }

        .sidebar-nav a.active i {
            color: var(--accent);
        }

        .sidebar-bottom {
            padding: 16px 24px 20px;
            border-top: 1px solid var(--border);
        }

        .sidebar-bottom a {
            display: block;
            font-size: 13px;
            color: var(--text-dim);
            padding: 4px 0;
            transition: color 0.2s;
        }

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

        .sidebar-bottom .copyright {
            font-size: 12px;
            color: var(--text-dim);
            margin-top: 10px;
            letter-spacing: 0.02em;
        }

        /* ===== 移动端顶栏 ===== */
        .topbar-mobile {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: rgba(10,22,40,0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            z-index: 200;
        }

        .topbar-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            padding: 0 20px;
        }

        .topbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 800;
            color: var(--text);
        }

        .menu-toggle {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text);
            background: rgba(255,255,255,0.06);
            transition: background 0.2s;
        }

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

        .mobile-dropdown {
            display: none;
            position: absolute;
            top: 64px;
            left: 0;
            right: 0;
            background: rgba(10,22,40,0.98);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            padding: 12px 16px 20px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.45);
        }

        .mobile-dropdown.open {
            display: block;
            animation: fadeSlide 0.25s ease;
        }

        .mobile-dropdown a {
            display: flex;
            align-items: center;
            gap: 12px;
            height: 48px;
            padding: 0 14px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            transition: background 0.2s, color 0.2s;
        }

        .mobile-dropdown a i {
            width: 20px;
            text-align: center;
            color: var(--text-dim);
        }

        .mobile-dropdown a:hover {
            background: rgba(255,255,255,0.06);
            color: var(--text);
        }

        .mobile-dropdown a.active {
            background: rgba(0,229,160,0.12);
            color: var(--text);
        }

        .mobile-dropdown a.active i {
            color: var(--accent);
        }

        @keyframes fadeSlide {
            from {
                opacity: 0;
                transform: translateY(-8px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 28px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 700;
            line-height: 1;
            cursor: pointer;
            transition: all 0.25s ease;
            text-decoration: none;
            border: 1px solid transparent;
            white-space: nowrap;
        }

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

        .btn-primary {
            background: var(--accent);
            color: #06281E;
            box-shadow: 0 0 20px var(--glow);
        }

        .btn-primary:hover {
            background: var(--accent-bright);
            color: #06281E;
            box-shadow: 0 0 32px rgba(0,229,160,0.55);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 14px rgba(0,229,160,0.4);
        }

        .btn-outline {
            background: transparent;
            color: var(--text);
            border: 1px solid rgba(255,255,255,0.25);
        }

        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(0,229,160,0.06);
            transform: translateY(-1px);
        }

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

        .btn-lg {
            height: 54px;
            padding: 0 36px;
            font-size: 16px;
        }

        /* ===== 板块通用 ===== */
        .section-pad {
            padding: 96px 0;
        }

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

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--accent);
            margin-bottom: 14px;
        }

        .section-label::before {
            content: "";
            width: 4px;
            height: 18px;
            background: var(--accent);
            border-radius: 2px;
            box-shadow: 0 0 10px var(--glow);
        }

        .section-title {
            font-size: clamp(28px, 3vw, 40px);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.01em;
            color: var(--text);
            margin-bottom: 20px;
        }

        .section-sub {
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-muted);
            max-width: 640px;
        }

        /* ===== Hero 小条幅 ===== */
        .page-hero {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background-image: linear-gradient(105deg, rgba(8,13,24,0.95) 0%, rgba(8,13,24,0.78) 50%, rgba(0,229,160,0.06) 130%), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            right: 0;
            bottom: 0;
            width: 420px;
            height: 2px;
            background: linear-gradient(90deg, transparent, rgba(0,229,160,0.6));
            transform: rotate(-12deg);
            transform-origin: right bottom;
            opacity: 0.4;
            pointer-events: none;
        }

        .page-hero .hero-content {
            padding: 60px 24px;
            max-width: 720px;
            position: relative;
            z-index: 1;
        }

        .hero-tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(0,229,160,0.12);
            border: 1px solid rgba(0,229,160,0.3);
            color: var(--accent);
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            margin-bottom: 18px;
        }

        .page-hero h1 {
            font-size: clamp(38px, 5vw, 56px);
            font-weight: 900;
            letter-spacing: -0.02em;
            color: var(--text);
            line-height: 1.15;
            margin-bottom: 16px;
        }

        .page-hero p {
            font-size: 18px;
            line-height: 1.7;
            color: var(--text-muted);
            max-width: 560px;
        }

        /* ===== 图文分栏 ===== */
        .split-section {
            padding: 96px 0;
            position: relative;
        }

        .split-grid {
            display: grid;
            grid-template-columns: 7fr 5fr;
            gap: 52px;
            align-items: center;
        }

        .split-image {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--card-shadow);
        }

        .split-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
            transition: transform 0.5s ease;
        }

        .split-image:hover img {
            transform: scale(1.02);
        }

        .image-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            padding: 6px 14px;
            border-radius: 999px;
            background: rgba(8,13,24,0.75);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255,255,255,0.14);
            color: var(--text);
            font-size: 13px;
            font-weight: 600;
        }

        .split-text .section-title {
            margin-bottom: 18px;
            font-size: clamp(26px, 2.8vw, 36px);
        }

        .split-text p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .split-text .stat-row {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            margin-top: 28px;
        }

        .stat-item {
            text-align: left;
        }

        .stat-item .num {
            font-size: 28px;
            font-weight: 800;
            color: var(--accent);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }

        .stat-item .label {
            font-size: 13px;
            color: var(--text-dim);
            margin-top: 4px;
        }

        /* ===== 特色区 ===== */
        .features-section {
            padding: 96px 0;
            background: linear-gradient(180deg, transparent, rgba(14,30,54,0.55), transparent);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .feature-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-top: 44px;
        }

        .feature-card {
            background: rgba(255,255,255,0.04);
            border: 1px solid var(--border);
            border-top: 1px solid var(--border-strong);
            border-radius: var(--radius);
            padding: 32px 30px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 1px;
            background: linear-gradient(90deg, rgba(0,229,160,0.5), transparent 70%);
        }

        .feature-card:hover {
            background: rgba(255,255,255,0.06);
            transform: translateY(-4px);
            box-shadow: 0 12px 32px rgba(0,0,0,0.5), 0 0 0 1px rgba(0,229,160,0.3);
        }

        .feature-card:hover .feature-icon {
            transform: scale(1.08);
        }

        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(0,229,160,0.15);
            border: 1px solid rgba(0,229,160,0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 19px;
            color: var(--accent);
            margin-bottom: 18px;
            transition: transform 0.3s ease;
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }

        .feature-card p {
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-muted);
        }

        /* ===== 标签云 ===== */
        .topic-section {
            padding: 96px 0;
        }

        .topic-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 36px;
            max-width: 720px;
        }

        .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 999px;
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.1);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            transition: all 0.25s ease;
            cursor: default;
        }

        .tag-item i {
            font-size: 13px;
            color: var(--accent);
        }

        .tag-item:hover {
            background: rgba(0,229,160,0.1);
            border-color: rgba(0,229,160,0.3);
            color: var(--text);
            transform: translateY(-2px);
        }

        /* ===== 信息亮点区 ===== */
        .info-section {
            padding: 96px 0;
            background: linear-gradient(180deg, transparent, rgba(14,30,54,0.35), transparent);
        }

        .info-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-top: 40px;
            max-width: 880px;
        }

        .info-item {
            display: flex;
            gap: 20px;
            padding: 24px 28px;
            background: rgba(255,255,255,0.04);
            border: 1px solid var(--border);
            border-radius: 14px;
            transition: all 0.3s ease;
            align-items: flex-start;
        }

        .info-item:hover {
            background: rgba(255,255,255,0.06);
            border-color: rgba(0,229,160,0.25);
            transform: translateX(6px);
            box-shadow: 0 8px 24px rgba(0,0,0,0.35);
        }

        .info-item .info-icon {
            flex-shrink: 0;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: rgba(0,229,160,0.12);
            border: 1px solid rgba(0,229,160,0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--accent);
        }

        .info-item .info-content {
            flex: 1;
        }

        .info-item .info-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 4px;
        }

        .info-item .info-desc {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-muted);
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 96px 0;
        }

        .faq-wrap {
            max-width: 760px;
            margin-top: 40px;
        }

        .accordion {
            list-style: none;
            background: transparent;
            border: none;
        }

        .accordion-item {
            background: rgba(255,255,255,0.03);
            border: 1px solid var(--border) !important;
            border-radius: 14px !important;
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color 0.3s ease;
        }

        .accordion-item.is-active {
            border-color: rgba(0,229,160,0.25) !important;
            background: rgba(0,229,160,0.06);
        }

        .accordion-title {
            min-height: 56px !important;
            padding: 8px 48px 8px 22px !important;
            font-size: 16px !important;
            font-weight: 600;
            color: var(--text) !important;
            line-height: 1.5;
            display: flex;
            align-items: center;
            border-bottom: 1px solid transparent !important;
            position: relative;
        }

        .accordion-title::before {
            display: none;
        }

        .accordion-title::after {
            content: "\f067";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 14px;
            position: absolute;
            right: 22px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--accent);
            transition: transform 0.3s ease;
        }

        .accordion-item.is-active > .accordion-title::after {
            content: "\f068";
        }

        .accordion-content {
            padding: 4px 22px 20px !important;
            border-top: 1px solid rgba(255,255,255,0.08);
            background: transparent !important;
            color: var(--text-muted) !important;
        }

        .accordion-content p {
            padding: 14px 0 4px;
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-muted);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 96px 0;
        }

        .cta-card {
            position: relative;
            border-radius: 20px;
            background: rgba(255,255,255,0.05);
            backdrop-filter: blur(16px);
            border-top: 1px solid var(--border-strong);
            border-bottom: 1px solid rgba(0,229,160,0.1);
            box-shadow: 0 16px 48px rgba(0,0,0,0.35);
            padding: 72px 56px;
            text-align: center;
            overflow: hidden;
        }

        .cta-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0,229,160,0.6), transparent);
        }

        .cta-card h2 {
            font-size: clamp(28px, 3vw, 40px);
            font-weight: 800;
            color: var(--text);
            margin-bottom: 16px;
        }

        .cta-card p {
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-muted);
            max-width: 520px;
            margin: 0 auto 36px;
        }

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

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid rgba(255,255,255,0.06);
            padding: 64px 24px 28px;
            position: relative;
            z-index: 1;
        }

        .footer-grid {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1.4fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }

        .footer-brand .logo-text {
            font-size: 22px;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-dim);
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-muted);
            padding: 4px 0;
            transition: color 0.2s;
        }

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

        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 10px;
        }

        .contact-item i {
            color: var(--accent);
            font-size: 14px;
            margin-top: 4px;
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            max-width: 1200px;
            margin: 24px auto 0;
            font-size: 12px;
            color: var(--text-dim);
            text-align: center;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1023px) {
            .sidebar {
                display: none;
            }

            .main-wrapper {
                margin-left: 0;
                padding-top: 64px;
            }

            .topbar-mobile {
                display: block;
            }

            .split-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .split-image img {
                min-height: 240px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

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

            .page-hero .hero-content {
                padding: 48px 16px;
            }

            .page-hero p {
                font-size: 16px;
            }

            .section-pad,
            .split-section,
            .features-section,
            .topic-section,
            .info-section,
            .faq-section,
            .cta-section {
                padding: 56px 0;
            }

            .feature-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .feature-card {
                padding: 26px 22px;
            }

            .cta-card {
                padding: 48px 22px;
                border-radius: 16px;
            }

            .cta-buttons {
                flex-direction: column;
                align-items: stretch;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .info-item {
                padding: 20px;
                flex-direction: column;
            }

            .info-item .info-icon {
                margin-bottom: 4px;
            }
        }

        @media (max-width: 519px) {
            .page-hero {
                min-height: 320px;
            }

            .page-hero h1 {
                font-size: 36px;
            }

            .hero-tag {
                font-size: 11px;
                padding: 5px 12px;
            }

            .section-title {
                font-size: 26px;
            }

            .stat-row {
                gap: 16px;
            }

            .stat-item .num {
                font-size: 22px;
            }

            .faq-wrap {
                margin-top: 24px;
            }

            .accordion-title {
                font-size: 15px !important;
                padding: 8px 42px 8px 18px !important;
            }
        }

        /* Focus 可访问性 */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }