* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --teal-deep: #0b5c58;
            --teal-mid: #1a7f7a;
            --teal-soft: #e6f5f3;
            --slate-800: #1a3c4a;
            --slate-600: #3e5a6c;
            --slate-400: #5c7380;
            --warm-cream: #fdfaf7;
            --border-subtle: #e8eef3;
            --accent-gold: #c2945c;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.02);
            --shadow-hover: 0 18px 28px -14px rgba(0, 0, 0, 0.08);
        }
        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, sans-serif;
            background: #fefefe;
            color: #11181c;
            line-height: 1.45;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            scroll-behavior: smooth;
        }
        .container {
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 32px;
        }
        /* 导航 */
        .site-header {
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            transition: box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
        }
        .header-flex {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            flex-wrap: wrap;
            gap: 18px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            flex-shrink: 0;
        }
        .brand-logo-img {
            width: 40px;
            height: 40px;
            object-fit: contain;
            border-radius: 10px;
            flex-shrink: 0;
            background: linear-gradient(135deg, #0f6e6a 0%, #1a8a7e 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
        }
        .brand-name {
            font-size: 1.5rem;
            font-weight: 700;
            letter-spacing: -0.4px;
            color: #0c4e6e;
            white-space: nowrap;
        }
        .brand-name span {
            font-weight: 400;
            color: #5a7d8c;
            font-size: 0.8rem;
            letter-spacing: 0;
            margin-left: 2px;
        }
        .nav-links-new {
            display: flex;
            gap: 22px;
            align-items: center;
            flex-wrap: wrap;
        }
        .nav-links-new a {
            text-decoration: none;
            font-weight: 500;
            font-size: 0.93rem;
            color: #2c3e50;
            transition: color 0.2s, transform 0.15s;
            position: relative;
            white-space: nowrap;
        }
        .nav-links-new a:hover,
        .nav-links-new a.active {
            color: #1a7f7a;
        }
        .nav-links-new a::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 0;
            height: 2px;
            background: #1a7f7a;
            border-radius: 2px;
            transition: width 0.25s ease;
        }
        .nav-links-new a:hover::after,
        .nav-links-new a.active::after {
            width: 100%;
        }
        .btn-ghost {
            border: 1px solid #cbd5e1;
            padding: 7px 20px;
            border-radius: 100px;
            background: transparent;
            font-weight: 500;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all 0.2s;
            text-decoration: none;
            color: #2c3e50;
            white-space: nowrap;
        }
        .btn-ghost:hover {
            border-color: #1a7f7a;
            color: #1a7f7a;
            background: #f0faf9;
        }
        /* Hero */
        .hero-alternative {
            padding: 55px 0 45px;
            background: #ffffff;
            overflow: hidden;
            position: relative;
        }
        .hero-alternative::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -120px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(26, 127, 122, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
            z-index: 0;
        }
        .hero-split {
            display: flex;
            align-items: center;
            gap: 55px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .hero-text {
            flex: 1.2;
            min-width: 300px;
        }
        .badge-new {
            background: #e6f7f5;
            color: #0f6e6a;
            padding: 6px 16px;
            border-radius: 40px;
            font-size: 0.82rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 20px;
            letter-spacing: 0.01em;
        }
        .badge-new .pulse-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            background: #0f6e6a;
            border-radius: 50%;
            animation: softPulse 2s infinite;
            flex-shrink: 0;
        }
        @keyframes softPulse {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.55;
                transform: scale(1.6);
            }
        }
        .hero-text h1 {
            font-size: 3.1rem;
            font-weight: 800;
            line-height: 1.16;
            letter-spacing: -0.025em;
            background: linear-gradient(135deg, #0c5b55 0%, #1a6e64 35%, #1f8b7e 65%, #23998a 100%);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
            margin-bottom: 16px;
        }
        .hero-text .hero-subtitle {
            font-size: 1.12rem;
            color: #3e5a6c;
            margin-bottom: 28px;
            max-width: 540px;
            line-height: 1.55;
        }
        .hero-stats {
            flex: 0.85;
            min-width: 280px;
            background: #f7fafc;
            border-radius: 36px;
            padding: 34px 28px;
            box-shadow: 0 20px 35px -15px rgba(0, 0, 0, 0.05);
            border: 1px solid #eef2f9;
        }
        .stat-item {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 22px;
        }
        .stat-item:last-child {
            margin-bottom: 0;
        }
        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: #186d6a;
            min-width: 58px;
        }
        .stat-label {
            font-size: 0.93rem;
            color: #4a5f6b;
            font-weight: 500;
        }
        /* 信任条 */
        .trust-strip {
            background: #f5f9f8;
            border-radius: 24px;
            padding: 28px 32px;
            margin: 16px 0 36px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-around;
            gap: 18px;
            text-align: center;
            border: 1px solid #dcece8;
        }
        .trust-item {
            flex: 1;
            min-width: 120px;
        }
        .trust-item .trust-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: #0f6e6a;
            letter-spacing: -0.03em;
        }
        .trust-item .trust-desc {
            font-size: 0.84rem;
            color: #5a7d8c;
            margin-top: 4px;
        }
        /* 设备卡片 */
        .device-cards-section {
            padding: 8px 0 45px;
            background: #ffffff;
        }
        .section-eyebrow {
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: #8a9ba7;
            margin-bottom: 6px;
        }
        .section-title-sm {
            font-size: 1.5rem;
            font-weight: 700;
            color: #1a3c4a;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
        }
        .device-cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 18px;
        }
        .device-card {
            background: #fafcfd;
            border: 1px solid #e8eef3;
            border-radius: 22px;
            padding: 26px 22px;
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
            cursor: pointer;
            display: flex;
            flex-direction: column;
            gap: 10px;
            position: relative;
            overflow: hidden;
        }
        .device-card:hover {
            transform: translateY(-5px);
            border-color: #b8d8d4;
            box-shadow: 0 16px 32px -12px rgba(15, 110, 106, 0.12);
            background: #ffffff;
        }
        .device-card .card-icon {
            font-size: 2.2rem;
            line-height: 1;
        }
        .device-card h4 {
            font-size: 1.08rem;
            font-weight: 700;
            color: #1a3c4a;
        }
        .device-card p {
            font-size: 0.86rem;
            color: #5c7380;
            line-height: 1.4;
        }
        .device-card .card-arrow {
            font-size: 0.84rem;
            color: #1a7f7a;
            font-weight: 600;
            margin-top: auto;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .device-card.card-highlight {
            background: linear-gradient(135deg, #f2faf8 0%, #e8f5f2 100%);
            border-color: #c4e0db;
        }
        .device-card.card-highlight::before {
            content: '推荐';
            position: absolute;
            top: 14px;
            right: 14px;
            background: #0f6e6a;
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 20px;
            letter-spacing: 0.03em;
            z-index: 2;
        }
        /* CTA */
        .cta-cluster {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 6px;
        }
        .btn-primary-alt {
            background: #0f6e6a;
            color: #fff;
            border: none;
            padding: 13px 28px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all 0.25s;
            white-space: nowrap;
        }
        .btn-primary-alt:hover {
            background: #0b5653;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(15, 110, 106, 0.25);
        }
        .btn-secondary-alt {
            background: #fff;
            color: #0f6e6a;
            border: 1.5px solid #c0dfd9;
            padding: 12px 26px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 0.93rem;
            cursor: pointer;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all 0.25s;
            white-space: nowrap;
        }
        .btn-secondary-alt:hover {
            border-color: #0f6e6a;
            background: #f6fbfa;
            transform: translateY(-2px);
        }
        .btn-outline-alt {
            background: transparent;
            color: #2c3e50;
            border: 1.5px solid #dde4ea;
            padding: 11px 24px;
            border-radius: 100px;
            font-weight: 500;
            font-size: 0.9rem;
            cursor: pointer;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all 0.25s;
            white-space: nowrap;
        }
        .btn-outline-alt:hover {
            border-color: #1a7f7a;
            color: #1a7f7a;
            background: #f9fdfc;
        }
        /* 特性 */
        .features-modern {
            padding: 65px 0;
            background: #f9fbfd;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2.05rem;
            font-weight: 700;
            color: #1a3c4a;
            letter-spacing: -0.02em;
        }
        .section-header .section-subtitle {
            color: #5c7380;
            font-size: 0.98rem;
            margin-top: 8px;
        }
        .feature-cards-alt {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 28px;
        }
        .feature-alt {
            background: white;
            border-radius: 26px;
            padding: 30px 26px;
            transition: all 0.25s;
            border: 1px solid #e9edf2;
            box-shadow: var(--shadow-card);
        }
        .feature-alt:hover {
            transform: translateY(-6px);
            border-color: #cce6e4;
            box-shadow: var(--shadow-hover);
        }
        .feature-emoji {
            font-size: 2.5rem;
            margin-bottom: 16px;
            line-height: 1;
        }
        .feature-alt h3 {
            font-size: 1.3rem;
            margin-bottom: 10px;
            color: #1a3c4a;
        }
        .feature-alt p {
            color: #4a5f6b;
            font-size: 0.91rem;
            line-height: 1.5;
        }
        .feature-alt .feature-tag {
            display: inline-block;
            background: #eaf7f5;
            color: #0b5653;
            font-size: 0.74rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 12px;
            margin-top: 8px;
            letter-spacing: 0.02em;
        }
        /* 关于 */
        .about-section {
            padding: 65px 0;
            background: #ffffff;
        }
        .about-content {
            max-width: 900px;
            margin: 0 auto;
        }
        .about-content h2 {
            font-size: 1.95rem;
            font-weight: 700;
            color: #1a3c4a;
            margin-bottom: 18px;
            letter-spacing: -0.02em;
        }
        .about-content p {
            font-size: 1rem;
            color: #3e5a6c;
            line-height: 1.7;
            margin-bottom: 14px;
        }
        .about-content .highlight-box {
            background: #f6faf9;
            border-left: 4px solid #1a7f7a;
            padding: 18px 22px;
            border-radius: 0 12px 12px 0;
            margin: 22px 0;
            font-weight: 500;
            color: #1a4d55;
            font-size: 0.96rem;
            line-height: 1.6;
        }
        .about-content ul {
            list-style: none;
            padding: 0;
            margin: 14px 0;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 10px;
        }
        .about-content ul li {
            padding: 10px 14px;
            background: #f9fbfc;
            border-radius: 10px;
            font-size: 0.91rem;
            color: #3e5a6c;
            display: flex;
            align-items: center;
            gap: 8px;
            border: 1px solid #eef2f7;
        }
        .about-content ul li::before {
            content: '✓';
            color: #0f6e6a;
            font-weight: 700;
            flex-shrink: 0;
        }
        /* 场景 */
        .scenarios-section {
            padding: 65px 0;
            background: #f9fbfd;
        }
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 26px;
        }
        .scenario-card {
            background: #ffffff;
            border-radius: 22px;
            padding: 28px 24px;
            border: 1px solid #e8eef3;
            transition: all 0.25s;
        }
        .scenario-card:hover {
            border-color: #c0dfd9;
            box-shadow: 0 12px 28px -10px rgba(0, 0, 0, 0.06);
            transform: translateY(-3px);
        }
        .scenario-card .sc-icon {
            font-size: 2.3rem;
            margin-bottom: 12px;
        }
        .scenario-card h4 {
            font-size: 1.18rem;
            font-weight: 700;
            color: #1a3c4a;
            margin-bottom: 8px;
        }
        .scenario-card p {
            font-size: 0.88rem;
            color: #5c7380;
            line-height: 1.55;
        }
        /* 探索导航 */
        .explore-nav-section {
            padding: 55px 0;
            background: #ffffff;
        }
        .explore-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 14px;
        }
        .explore-link-card {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 18px;
            background: #fafcfd;
            border: 1px solid #e8eef3;
            border-radius: 16px;
            text-decoration: none;
            color: #2c3e50;
            font-weight: 500;
            transition: all 0.2s;
            font-size: 0.91rem;
        }
        .explore-link-card:hover {
            border-color: #1a7f7a;
            background: #f6fbfa;
            color: #1a7f7a;
            transform: translateX(4px);
        }
        .explore-link-card .exp-arrow {
            color: #1a7f7a;
            font-weight: 700;
            flex-shrink: 0;
        }
        /* 对比 */
        .compare-section {
            padding: 55px 0;
            background: #ffffff;
        }
        .compare-table-wrap {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 22px;
        }
        .compare-card {
            border-radius: 22px;
            padding: 28px 24px;
            border: 2px solid #e8eef3;
            transition: all 0.3s;
            position: relative;
            background: #fcfdfe;
        }
        .compare-card.recommended {
            border-color: #0f6e6a;
            background: #f9fdfc;
            box-shadow: 0 8px 30px -10px rgba(15, 110, 106, 0.1);
        }
        .compare-card.recommended::after {
            content: '⭐ 长期用户首选';
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: #0f6e6a;
            color: #fff;
            font-size: 0.74rem;
            font-weight: 700;
            padding: 5px 16px;
            border-radius: 20px;
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .compare-card h4 {
            font-size: 1.22rem;
            font-weight: 700;
            color: #1a3c4a;
            margin-bottom: 6px;
            text-align: center;
        }
        .compare-card .compare-subtitle {
            text-align: center;
            color: #5c7380;
            font-size: 0.84rem;
            margin-bottom: 14px;
        }
        .compare-card ul {
            list-style: none;
            padding: 0;
        }
        .compare-card ul li {
            padding: 7px 0;
            font-size: 0.88rem;
            color: #3e5a6c;
            border-bottom: 1px solid #f0f4f8;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .compare-card ul li::before {
            content: '●';
            color: #0f6e6a;
            font-size: 0.55rem;
            flex-shrink: 0;
        }
        /* 隐私卡片 */
        .privacy-card {
            background: #1f2f3a;
            color: white;
            border-radius: 36px;
            margin: 45px 0;
            padding: 42px 44px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 22px;
        }
        .privacy-text h3 {
            font-size: 1.65rem;
            margin-bottom: 10px;
            font-weight: 700;
        }
        .privacy-text p {
            color: #c5d4dc;
            font-size: 0.93rem;
            max-width: 500px;
            line-height: 1.5;
        }
        .privacy-badge {
            background: rgba(47, 141, 126, 0.25);
            border-radius: 60px;
            padding: 10px 26px;
            font-weight: 500;
            font-size: 0.88rem;
            white-space: nowrap;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        /* 页脚 */
        .footer-alt {
            background: #f1f5f9;
            border-top: none;
            padding: 44px 0 32px;
            font-size: 0.88rem;
            color: #5c7380;
        }
        .footer-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 30px;
        }
        .footer-col h5 {
            font-weight: 700;
            color: #1a3c4a;
            margin-bottom: 10px;
            font-size: 0.93rem;
        }
        .footer-col a {
            display: block;
            color: #5c7380;
            text-decoration: none;
            margin-bottom: 6px;
            transition: color 0.2s;
            font-size: 0.86rem;
        }
        .footer-col a:hover {
            color: #1a7f7a;
        }
        .footer-bottom {
            text-align: center;
            margin-top: 26px;
            padding-top: 18px;
            border-top: 1px solid #dde4ea;
            font-size: 0.8rem;
            color: #8a9ba7;
        }
        /* 响应式 */
        @media (max-width: 780px) {
            .hero-split {
                flex-direction: column;
            }
            .hero-text h1 {
                font-size: 2.2rem;
            }
            .container {
                padding: 0 18px;
            }
            .privacy-card {
                flex-direction: column;
                text-align: center;
                gap: 16px;
                padding: 30px 22px;
            }
            .device-cards-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .device-card {
                padding: 18px 14px;
            }
            .device-card h4 {
                font-size: 0.93rem;
            }
            .device-card p {
                font-size: 0.78rem;
            }
            .nav-links-new {
                gap: 12px;
            }
            .nav-links-new a {
                font-size: 0.83rem;
            }
            .brand-name {
                font-size: 1.25rem;
            }
            .brand-name span {
                display: none;
            }
            .feature-cards-alt {
                grid-template-columns: 1fr;
            }
            .scenarios-grid {
                grid-template-columns: 1fr 1fr;
            }
            .explore-grid {
                grid-template-columns: 1fr 1fr;
            }
            .trust-strip {
                gap: 12px;
                padding: 18px 14px;
            }
            .trust-item .trust-num {
                font-size: 1.35rem;
            }
            .compare-table-wrap {
                grid-template-columns: 1fr;
            }
            .about-content ul {
                grid-template-columns: 1fr 1fr;
            }
            .cta-cluster {
                flex-direction: column;
                align-items: flex-start;
            }
            .section-title-sm {
                font-size: 1.25rem;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 480px) {
            .device-cards-grid {
                grid-template-columns: 1fr;
            }
            .scenarios-grid {
                grid-template-columns: 1fr;
            }
            .explore-grid {
                grid-template-columns: 1fr;
            }
            .hero-text h1 {
                font-size: 1.8rem;
            }
            .stat-number {
                font-size: 1.4rem;
                min-width: 40px;
            }
            .header-flex {
                gap: 10px;
            }
            .about-content ul {
                grid-template-columns: 1fr;
            }
            .trust-strip {
                flex-direction: column;
                gap: 8px;
            }
            .compare-card.recommended::after {
                font-size: 0.68rem;
                padding: 4px 12px;
                top: -12px;
            }
            .privacy-card {
                border-radius: 24px;
            }
        }