:root {
            --primary: #7B4B2A;
            --primary-dark: #5A3318;
            --primary-light: #A67C52;
            --accent: #C8964A;
            --accent-light: #F0E0C8;
            --bg: #F8F5F1;
            --bg-deep: #241812;
            --surface: #FFFFFF;
            --text: #2D2A26;
            --text-weak: #8A8580;
            --border: #E4DDD5;
            --radius: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.12);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --space-xs: 8px;
            --space-sm: 16px;
            --space-md: 32px;
            --space-lg: 56px;
            --space-xl: 88px;
            --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-body);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        ul,
        ol {
            list-style: none;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
        }
        input:focus,
        button:focus,
        a:focus {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .site-main {
            margin-left: 260px;
            min-height: 100vh;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 32px;
        }
        .section {
            padding: var(--space-xl) 0;
        }
        .section-head {
            max-width: 720px;
            margin-bottom: var(--space-lg);
        }
        .section-head .eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent);
            background: var(--accent-light);
            padding: 4px 14px;
            border-radius: 100px;
            margin-bottom: 12px;
        }
        .section-head h2 {
            font-size: 32px;
            line-height: 1.3;
            color: var(--primary-dark);
            font-weight: 700;
            margin-bottom: 12px;
        }
        .section-head p {
            color: var(--text-weak);
            font-size: 16px;
            line-height: 1.7;
        }

        /* 左侧导航 */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: 260px;
            background: var(--bg-deep);
            color: #fff;
            z-index: 1000;
            display: flex;
            flex-direction: column;
            padding: 36px 24px 28px;
            border-right: 1px solid rgba(255, 255, 255, 0.06);
        }
        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 14px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 32px;
        }
        .brand-mark {
            width: 46px;
            height: 46px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--accent), #A6712C);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
            box-shadow: 0 4px 16px rgba(200, 150, 74, 0.45);
        }
        .brand-name {
            font-size: 15px;
            font-weight: 700;
            line-height: 1.4;
            letter-spacing: 0.02em;
        }
        .brand-sub {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.6);
            letter-spacing: 0.06em;
        }
        .sidebar-nav {
            flex: 1;
        }
        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 13px 18px;
            color: rgba(255, 255, 255, 0.7);
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            margin-bottom: 4px;
        }
        .sidebar-nav a i {
            font-size: 17px;
            width: 20px;
            text-align: center;
        }
        .sidebar-nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateX(4px);
        }
        .sidebar-nav a.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(200, 150, 74, 0.45), rgba(123, 75, 42, 0.4));
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
        }
        .sidebar-note {
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .sidebar-note p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.7;
            letter-spacing: 0.04em;
        }

        /* 移动端顶部导航 */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: var(--bg-deep);
            z-index: 1100;
            padding: 0 20px;
            box-shadow: 0 2px 14px rgba(0, 0, 0, 0.2);
        }
        .mobile-header-inner {
            display: flex;
            align-items: center;
            gap: 14px;
            height: 100%;
        }
        .mobile-header-toggle {
            width: 40px;
            height: 40px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 8px;
            cursor: pointer;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
        }
        .mobile-header-toggle span {
            width: 20px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: var(--transition);
        }
        .mobile-header-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .mobile-header-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .mobile-header-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-brand {
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.02em;
            line-height: 1.3;
        }
        .mobile-menu {
            position: absolute;
            top: 64px;
            left: 0;
            right: 0;
            background: var(--bg-deep);
            padding: 12px 20px 20px;
            display: none;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu a {
            display: block;
            padding: 12px 14px;
            color: rgba(255, 255, 255, 0.8);
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
        }
        .mobile-menu a.active {
            color: #fff;
            background: rgba(200, 150, 74, 0.3);
        }

        /* Hero */
        .hero {
            position: relative;
            padding: 100px 0 88px;
            background: linear-gradient(135deg, rgba(36, 24, 18, 0.92), rgba(123, 75, 42, 0.78)), url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .hero-inner {
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 48px;
            align-items: center;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: 100px;
            padding: 6px 18px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.06em;
            margin-bottom: 22px;
            backdrop-filter: blur(6px);
        }
        .hero h1 {
            font-size: 38px;
            line-height: 1.3;
            font-weight: 800;
            margin-bottom: 18px;
            color: #fff;
            letter-spacing: 0.01em;
        }
        .hero h1 .highlight {
            color: var(--accent);
        }
        .hero-desc {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.75);
            max-width: 520px;
            margin-bottom: 28px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 34px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 13px 28px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            letter-spacing: 0.02em;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--bg-deep);
            box-shadow: 0 6px 20px rgba(200, 150, 74, 0.4);
        }
        .btn-primary:hover {
            background: #D9A55B;
            color: var(--bg-deep);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(200, 150, 74, 0.5);
        }
        .btn-ghost {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.4);
        }
        .btn-ghost:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }
        .hero-stats .stat {
            text-align: center;
        }
        .hero-stats .stat-num {
            font-size: 26px;
            font-weight: 800;
            color: var(--accent);
            display: block;
            line-height: 1.2;
        }
        .hero-stats .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            letter-spacing: 0.03em;
        }

        /* 白皮书卡片 */
        .whitepaper-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .wp-cover {
            position: relative;
            height: 180px;
            overflow: hidden;
        }
        .wp-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .wp-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 100px;
            letter-spacing: 0.04em;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
        }
        .wp-body {
            padding: 22px 24px 24px;
        }
        .wp-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 12px;
        }
        .wp-toc {
            margin-bottom: 18px;
        }
        .wp-toc li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text);
            padding: 7px 0;
            border-bottom: 1px dashed var(--border);
        }
        .wp-toc li:last-child {
            border-bottom: none;
        }
        .wp-toc li span {
            font-size: 12px;
            font-weight: 700;
            color: var(--accent);
            background: var(--accent-light);
            border-radius: 6px;
            padding: 2px 8px;
            flex-shrink: 0;
        }
        .wp-form {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .wp-form input {
            padding: 11px 14px;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 14px;
            background: #f9f7f5;
            transition: var(--transition);
        }
        .wp-form input:focus {
            border-color: var(--accent);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(200, 150, 74, 0.15);
        }
        .btn-full {
            width: 100%;
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 12px 20px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-full:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(123, 75, 42, 0.3);
        }
        .wp-privacy {
            font-size: 12px;
            color: var(--text-weak);
            text-align: center;
            margin-top: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 4px;
        }

        /* 渠道卖点 */
        .features {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px 30px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), var(--primary));
            opacity: 0;
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: rgba(200, 150, 74, 0.4);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 54px;
            height: 54px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--accent-light), #FDF6EB);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--accent);
            margin-bottom: 20px;
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.75;
        }

        /* 成功数据条 */
        .stats-band {
            background: linear-gradient(120deg, var(--bg-deep) 0%, #3A2417 100%);
            padding: 64px 0;
            color: #fff;
        }
        .stats-band .section-head h2 {
            color: #fff;
        }
        .stats-band .section-head p {
            color: rgba(255, 255, 255, 0.6);
        }
        .stats-band .eyebrow {
            background: rgba(200, 150, 74, 0.25);
            color: var(--accent);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            margin-top: 36px;
        }
        .stat-item {
            text-align: center;
            padding: 30px 20px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            transition: var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.09);
            transform: translateY(-3px);
        }
        .stat-item .num {
            font-size: 40px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 6px;
            display: block;
        }
        .stat-item .label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            letter-spacing: 0.03em;
        }

        /* 线索表单 */
        .lead-sec {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
        }
        .lead-inner {
            display: grid;
            grid-template-columns: 0.9fr 1.1fr;
            gap: 48px;
            align-items: center;
            background: linear-gradient(135deg, var(--bg) 0%, #FDF8F2 100%);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 48px;
        }
        .lead-info h2 {
            font-size: 28px;
            color: var(--primary-dark);
            margin-bottom: 14px;
            font-weight: 700;
        }
        .lead-info p {
            color: var(--text-weak);
            font-size: 15px;
            line-height: 1.75;
            margin-bottom: 20px;
        }
        .lead-highlights {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .lead-highlights li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text);
        }
        .lead-highlights li i {
            color: var(--accent);
            font-size: 16px;
        }
        .lead-form-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow);
        }
        .lead-form-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 6px;
        }
        .lead-form-card .form-hint {
            font-size: 13px;
            color: var(--text-weak);
            margin-bottom: 20px;
        }
        .lead-form-card form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .lead-form-card label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .lead-form-card input {
            padding: 12px 14px;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 14px;
            background: #FAF8F6;
            transition: var(--transition);
        }
        .lead-form-card input:focus {
            border-color: var(--accent);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(200, 150, 74, 0.12);
        }
        .form-privacy {
            font-size: 12px;
            color: var(--text-weak);
            text-align: center;
            margin-top: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }

        /* 资讯 */
        .news {
            background: var(--bg);
        }
        .news-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }
        .news-list-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border);
        }
        .news-list {
            display: flex;
            flex-direction: column;
        }
        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }
        .news-item:last-child {
            border-bottom: none;
        }
        .news-item:hover {
            padding-left: 8px;
        }
        .news-item .news-idx {
            font-size: 13px;
            font-weight: 700;
            color: var(--accent);
            background: var(--accent-light);
            border-radius: 6px;
            padding: 4px 10px;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .news-item a {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
        }
        .news-item a:hover {
            color: var(--primary);
        }
        .news-item .meta {
            font-size: 12px;
            color: var(--text-weak);
            margin-top: 4px;
        }
        .news-sidebar {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .news-tags {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px;
        }
        .news-tags h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 14px;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag {
            display: inline-block;
            padding: 5px 14px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 100px;
            font-size: 13px;
            color: var(--text);
            transition: var(--transition);
        }
        .tag:hover {
            background: var(--accent-light);
            border-color: var(--accent);
            color: var(--primary-dark);
        }
        .news-recommend {
            background: linear-gradient(135deg, var(--bg-deep), #3A2417);
            border-radius: var(--radius-lg);
            padding: 28px;
            color: #fff;
        }
        .news-recommend h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .news-recommend ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .news-recommend a {
            color: rgba(255, 255, 255, 0.8);
            font-size: 14px;
            line-height: 1.5;
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }
        .news-recommend a:hover {
            color: var(--accent);
        }
        .news-recommend a i {
            font-size: 12px;
            margin-top: 4px;
            color: var(--accent);
            flex-shrink: 0;
        }

        /* 使用指南 */
        .guide {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
        }
        .guide-steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .guide-step {
            position: relative;
            padding: 32px 28px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            transition: var(--transition);
        }
        .guide-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .step-num {
            font-size: 14px;
            font-weight: 800;
            color: var(--accent);
            background: var(--accent-light);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }
        .guide-step h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 8px;
        }
        .guide-step p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        /* 隐私说明 */
        .privacy-sec {
            background: var(--bg);
            border-bottom: 1px solid var(--border);
        }
        .privacy-card {
            display: flex;
            align-items: center;
            gap: 32px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 40px;
        }
        .privacy-icon {
            width: 72px;
            height: 72px;
            flex-shrink: 0;
            border-radius: 50%;
            background: var(--accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 30px;
            color: var(--accent);
        }
        .privacy-content h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 8px;
        }
        .privacy-content p {
            font-size: 15px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        /* FAQ */
        .faq-sec {
            background: var(--surface);
        }
        .faq-wrap {
            max-width: 780px;
            margin: 0 auto;
        }
        .accordion {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
        }
        .accordion-item {
            border-bottom: 1px solid var(--border);
        }
        .accordion-item:last-child {
            border-bottom: none;
        }
        .accordion-title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            background: transparent;
            cursor: pointer;
            transition: var(--transition);
        }
        .accordion-title:hover {
            background: var(--bg);
            color: var(--primary);
        }
        .accordion-title::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 13px;
            color: var(--accent);
            transition: var(--transition);
        }
        .accordion-item.is-active .accordion-title {
            color: var(--primary);
            background: #FCF9F5;
        }
        .accordion-item.is-active .accordion-title::after {
            transform: rotate(180deg);
        }
        .accordion-content {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.8;
            display: none;
        }
        .accordion-item.is-active .accordion-content {
            display: block;
        }

        /* 页脚 */
        .footer {
            background: var(--bg-deep);
            color: rgba(255, 255, 255, 0.55);
            padding: 56px 0 28px;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand p {
            font-size: 14px;
            margin-top: 12px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-links h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-links ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.35);
            font-size: 13px;
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* 浮动CTA */
        .float-cta {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--bg-deep);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            box-shadow: 0 6px 20px rgba(200, 150, 74, 0.4);
            z-index: 900;
            transition: var(--transition);
            opacity: 0;
            visibility: hidden;
            transform: translateY(12px);
        }
        .float-cta.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .float-cta:hover {
            background: #D9A55B;
            color: var(--bg-deep);
            transform: translateY(-3px);
            box-shadow: 0 10px 28px rgba(200, 150, 74, 0.5);
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .sidebar {
                width: 220px;
                padding: 24px 18px;
            }
            .site-main {
                margin-left: 220px;
            }
            .hero h1 {
                font-size: 32px;
            }
            .features-grid {
                gap: 20px;
            }
            .feature-card {
                padding: 28px 22px;
            }
            .stats-grid {
                gap: 18px;
            }
            .lead-inner {
                padding: 32px;
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            .sidebar {
                display: none;
            }
            .site-main {
                margin-left: 0;
                padding-top: 64px;
            }
            .mobile-header {
                display: block;
            }
            .hero {
                padding: 56px 0 56px;
            }
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero h1 {
                font-size: 28px;
            }
            .hero-actions {
                flex-direction: column;
            }
            .btn {
                justify-content: center;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .lead-inner {
                grid-template-columns: 1fr;
                padding: 28px;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .guide-steps {
                grid-template-columns: 1fr;
            }
            .privacy-card {
                flex-direction: column;
                text-align: center;
                padding: 32px 24px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .float-cta {
                bottom: 20px;
                right: 20px;
                width: 42px;
                height: 42px;
                font-size: 15px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 20px;
            }
            .section {
                padding: 48px 0;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .hero h1 {
                font-size: 24px;
            }
            .hero-desc {
                font-size: 14px;
            }
            .hero-stats {
                gap: 16px;
            }
            .hero-stats .stat-num {
                font-size: 22px;
            }
            .whitepaper-card {
                margin: 0 -10px;
            }
            .lead-inner {
                padding: 20px;
            }
            .lead-form-card {
                padding: 24px 20px;
            }
            .wp-form input,
            .lead-form-card input {
                font-size: 13px;
                padding: 10px 12px;
            }
            .btn {
                padding: 11px 22px;
                font-size: 14px;
            }
            .stats-grid {
                gap: 12px;
            }
            .stat-item {
                padding: 20px 16px;
            }
            .stat-item .num {
                font-size: 30px;
            }
            .guide-step {
                padding: 24px 20px;
            }
            .news-item a {
                font-size: 14px;
            }
            .accordion-title {
                padding: 16px 18px;
                font-size: 14px;
            }
            .footer {
                padding: 40px 0 20px;
            }
        }