:root {
            --primary:       #0f3fa6;
            --primary-dark:  #082d7a;
            --primary-light: #1a5cd8;
            --accent:        #38b6ff;
            --accent-bright: #00d4ff;
            --accent2:       #2563eb;
            --cta:           #1e90ff;
            --cta-hover:     #1270d8;
            --text:          #1e293b;
            --muted:         #64748b;
            --bg:            #f0f5ff;
            --white:         #ffffff;
            --border:        #dbeafe;
            --card-shadow:   0 4px 24px rgba(15,63,166,0.10);
            --gold:          #fbbf24;
        }

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

        body {
            font-family: 'Noto Sans SC', 'Microsoft YaHei', Arial, sans-serif;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
        }

        /* ======== 导航栏 ======== */
        .navbar {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            padding: 0;
            box-shadow: 0 2px 16px rgba(15,63,166,0.25);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .nav-container {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 30px;
        }

        .logo {
            color: var(--accent-bright);
            font-size: 26px;
            font-weight: 900;
            text-decoration: none;
            font-family: 'Rajdhani', sans-serif;
            letter-spacing: 1px;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 2px;
            align-items: center;
        }

        .nav-menu li a {
            color: rgba(255,255,255,0.88);
            text-decoration: none;
            padding: 24px 18px;
            display: block;
            transition: all 0.25s;
            font-size: 14px;
            font-weight: 500;
            border-bottom: 3px solid transparent;
            letter-spacing: 0.3px;
        }

        .nav-menu li a:hover {
            color: var(--accent-bright);
            background: rgba(56,182,255,0.08);
            border-bottom-color: var(--accent-bright);
        }

        .contact-btn {
            background: linear-gradient(135deg, var(--cta) 0%, var(--accent) 100%) !important;
            color: white !important;
            padding: 11px 28px !important;
            border-radius: 22px !important;
            margin-left: 18px !important;
            font-weight: 700 !important;
            border-bottom: none !important;
            box-shadow: 0 4px 14px rgba(56,182,255,0.35);
        }

        .contact-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(30,144,255,0.5) !important;
        }

        /* ======== 侧边客服 ======== */
        .floating-contact {
            position: fixed;
            right: 18px;
            top: 50%;
            transform: translateY(-50%);
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .floating-contact .contact-item {
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent2) 100%);
            color: white;
            padding: 11px 20px;
            border-radius: 22px;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 16px rgba(15,63,166,0.28);
            transition: all 0.28s;
            font-size: 13px;
            font-weight: 600;
        }

        .floating-contact .contact-item:hover {
            background: linear-gradient(135deg, var(--accent2) 0%, var(--accent) 100%);
            transform: translateX(-5px);
            box-shadow: 0 6px 22px rgba(37,99,235,0.4);
        }

        .floating-contact .contact-item.tg-contact {
            background: linear-gradient(135deg, #0ea5e9 0%, #38b6ff 100%);
        }

        .contact-icon { font-size: 18px; }
        .contact-text { font-size: 13px; white-space: nowrap; }

        /* ======== 横幅 ======== */
        .hero {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 55%, var(--primary-light) 100%);
            color: white;
            padding: 88px 30px 80px;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -120px; right: -120px;
            width: 520px; height: 520px;
            background: radial-gradient(circle, rgba(56,182,255,0.13) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -100px; left: -80px;
            width: 400px; height: 400px;
            background: radial-gradient(circle, rgba(0,212,255,0.09) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-container {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 60px;
            position: relative;
            z-index: 1;
        }

        .hero-content { flex: 1; }

        .hero-content h1 {
            font-size: 50px;
            margin-bottom: 22px;
            color: var(--accent-bright);
            text-shadow: 0 2px 12px rgba(0,212,255,0.25);
            font-weight: 900;
            line-height: 1.15;
        }

        .hero-features { font-size: 17px; margin: 28px 0; line-height: 2.1; }
        .hero-features div { margin: 8px 0; }

        .highlight { color: var(--accent-bright); font-weight: 700; }

        .hero-discount {
            font-size: 22px;
            margin: 28px 0;
            padding: 14px 24px;
            background: rgba(56,182,255,0.15);
            border-left: 4px solid var(--accent);
            display: inline-block;
            border-radius: 6px;
        }

        .hero-discount .discount-text {
            color: var(--accent-bright);
            font-weight: 900;
            font-size: 28px;
        }

        .cta-button {
            display: inline-block;
            background: linear-gradient(135deg, var(--cta) 0%, var(--accent) 100%);
            color: white;
            padding: 17px 48px;
            text-decoration: none;
            border-radius: 30px;
            font-size: 18px;
            font-weight: 700;
            margin-top: 22px;
            transition: all 0.3s;
            box-shadow: 0 6px 24px rgba(30,144,255,0.4);
            letter-spacing: 0.5px;
        }

        .cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(30,144,255,0.6);
        }

        .hero-image {
            width: 420px; height: 300px;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0,0,0,0.28);
            flex-shrink: 0;
            border: 2px solid rgba(56,182,255,0.25);
        }

        .hero-image img { width: 100%; height: 100%; object-fit: cover; }

        /* ======== 服务类型 ======== */
        .service-types {
            padding: 88px 30px;
            background: white;
        }

        .container { max-width: 1400px; margin: 0 auto; }

        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
            gap: 32px;
            margin-top: 52px;
        }

        .service-card {
            background: white;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: all 0.3s;
            border: 1px solid var(--border);
        }

        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 48px rgba(15,63,166,0.18);
            border-color: var(--accent);
        }

        .service-image { width: 100%; aspect-ratio: 4/3; overflow: hidden; background: var(--bg); }
        .service-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.35s; }
        .service-card:hover .service-image img { transform: scale(1.05); }

        .service-header {
            padding: 36px 28px;
            text-align: center;
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent2) 100%);
            color: white;
        }

        .service-card:nth-child(2) .service-header {
            background: linear-gradient(135deg, #1565c0 0%, #0288d1 100%);
        }

        .service-card:nth-child(3) .service-header {
            background: linear-gradient(135deg, #0d47a1 0%, #1976d2 100%);
        }

        .service-title { font-size: 26px; font-weight: 900; margin-bottom: 8px; }

        .service-subtitle {
            font-size: 18px; font-weight: 700;
            color: var(--accent-bright);
            text-shadow: 0 1px 4px rgba(0,0,0,0.2);
        }

        .service-features { padding: 28px 30px; }

        .service-feature {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 18px;
            font-size: 14.5px;
            line-height: 1.8;
            color: var(--text);
        }

        .service-feature::before {
            content: '✓';
            color: var(--cta);
            font-weight: 900;
            font-size: 18px;
            flex-shrink: 0;
            margin-top: 1px;
        }

        /* ======== 套餐区域 ======== */
        .plans-section {
            padding: 88px 30px;
            background: linear-gradient(180deg, var(--bg) 0%, #ffffff 100%);
        }

        .section-title {
            text-align: center;
            font-size: 38px;
            color: var(--primary-dark);
            margin-bottom: 14px;
            position: relative;
            padding-bottom: 20px;
            font-weight: 900;
        }

        .section-subtitle {
            text-align: center;
            font-size: 17px;
            color: var(--muted);
            margin-bottom: 30px;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0; left: 50%;
            transform: translateX(-50%);
            width: 80px; height: 4px;
            background: linear-gradient(90deg, var(--cta) 0%, var(--accent-bright) 100%);
            border-radius: 2px;
        }

        /* 地区标签页 */
        .region-tabs {
            display: flex;
            justify-content: center;
            gap: 0;
            margin-bottom: 40px;
            overflow-x: auto;
            border-bottom: 2px solid var(--border);
            -webkit-overflow-scrolling: touch;
        }

        .region-tabs::-webkit-scrollbar { height: 4px; }
        .region-tabs::-webkit-scrollbar-thumb { background: var(--cta); border-radius: 4px; }

        .region-tab {
            padding: 14px 32px;
            background: transparent;
            border: none;
            border-bottom: 3px solid transparent;
            cursor: pointer;
            transition: all 0.25s;
            font-size: 15px;
            font-weight: 600;
            color: var(--muted);
            white-space: nowrap;
            flex-shrink: 0;
            font-family: 'Noto Sans SC', sans-serif;
        }

        .region-tab:hover { color: var(--primary); background: rgba(30,144,255,0.05); }

        .region-tab.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
            font-weight: 700;
        }

        .plans-container { max-width: 1400px; margin: 0 auto; }
        .region-content { display: none; }
        .region-content.active { display: block; }

        .plans-scroll {
            overflow-x: auto;
            overflow-y: hidden;
            scroll-behavior: smooth;
            padding: 20px 10px;
            -webkit-overflow-scrolling: touch;
        }

        .plans-scroll::-webkit-scrollbar { height: 8px; }
        .plans-scroll::-webkit-scrollbar-track { background: #f1f5f9; border-radius: 10px; }
        .plans-scroll::-webkit-scrollbar-thumb {
            background: linear-gradient(90deg, var(--cta) 0%, var(--accent-bright) 100%);
            border-radius: 10px;
        }

        .plans-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            max-width: 1200px;
            margin: 0 auto;
            min-width: fit-content;
        }

        .plan-card {
            background: white;
            border-radius: 20px;
            padding: 34px 24px;
            box-shadow: var(--card-shadow);
            transition: all 0.3s;
            border: 2px solid var(--border);
            position: relative;
            overflow: visible;
            min-width: 280px;
        }

        .plan-card::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0;
            height: 5px;
            background: linear-gradient(90deg, var(--cta) 0%, var(--accent-bright) 100%);
            border-radius: 20px 20px 0 0;
        }

        .plan-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 18px 44px rgba(15,63,166,0.18);
            border-color: var(--cta);
        }

        .plan-card.recommended {
            border: 3px solid var(--gold);
            box-shadow: 0 10px 32px rgba(251,191,36,0.22);
        }

        .plan-card.recommended::before {
            background: linear-gradient(90deg, var(--gold) 0%, #fde68a 100%);
            height: 6px;
        }

        .plan-badge {
            position: absolute;
            top: 14px; right: 14px;
            background: linear-gradient(135deg, var(--gold) 0%, #fde68a 100%);
            color: #7c4f00;
            padding: 4px 14px;
            border-radius: 5px;
            font-size: 12px;
            font-weight: 700;
            box-shadow: 0 2px 8px rgba(251,191,36,0.28);
        }

        .plan-name {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 14px;
            text-align: center;
        }

        .plan-price {
            font-size: 36px;
            color: var(--cta);
            font-weight: 900;
            margin: 18px 0;
            text-align: center;
        }

        .plan-price small { font-size: 15px; color: var(--muted); font-weight: 400; }

        .plan-specs { margin: 22px 0; text-align: left; }

        .plan-specs div {
            padding: 11px 0;
            border-bottom: 1px solid var(--border);
            display: flex;
            justify-content: space-between;
            font-size: 13.5px;
        }

        .plan-specs div:last-child { border-bottom: none; }
        .spec-label { color: var(--muted); }
        .spec-value { color: var(--text); font-weight: 700; }

        .plan-button {
            display: block;
            width: 100%;
            padding: 14px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent2) 100%);
            color: white;
            text-align: center;
            text-decoration: none;
            border-radius: 10px;
            font-weight: 700;
            transition: all 0.3s;
            margin-top: 18px;
            border: none;
            cursor: pointer;
            font-size: 15px;
            font-family: 'Noto Sans SC', sans-serif;
        }

        .plan-button:hover {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            transform: scale(1.02);
            box-shadow: 0 5px 20px rgba(15,63,166,0.35);
        }

        /* ======== 对比区域 ======== */
        .comparison-section {
            padding: 88px 30px;
            background: white;
        }

        .comparison-table { max-width: 1400px; margin: 50px auto 0; overflow-x: auto; }

        .comparison-grid {
            display: grid;
            grid-template-columns: 200px repeat(3, 1fr);
            gap: 0;
            min-width: 800px;
        }

        .comparison-header {
            padding: 24px 18px;
            font-weight: 700;
            text-align: center;
            font-size: 17px;
        }

        .comparison-header:first-child {
            background: #334155; color: white; border-radius: 10px 0 0 0;
        }

        .comparison-header:nth-child(2) {
            background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%); color: white;
        }

        .comparison-header:nth-child(3) {
            background: linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%); color: white;
        }

        .comparison-header:nth-child(4) {
            background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%); color: white; border-radius: 0 10px 0 0;
        }

        .comparison-cell {
            padding: 18px;
            border-bottom: 1px solid var(--border);
            text-align: center;
            font-size: 13.5px;
        }

        .comparison-cell:nth-child(4n+1) {
            background: #f8faff; font-weight: 600; color: var(--muted); text-align: left;
        }

        .comparison-cell:nth-child(4n+2) { background: rgba(59,130,246,0.04); }
        .comparison-cell:nth-child(4n+3) { background: rgba(14,165,233,0.04); }
        .comparison-cell:nth-child(4n+4) { background: rgba(99,102,241,0.04); }

        .highlight-text  { color: #2563eb; font-weight: 700; }
        .highlight-text-sky { color: #0284c7; font-weight: 700; }
        .highlight-text-indigo { color: #4f46e5; font-weight: 700; }

        /* ======== FAQ ======== */
        .faq-section { padding: 88px 30px; background: var(--bg); }

        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 18px;
            margin-top: 50px;
            max-width: 1400px;
            margin-left: auto;
            margin-right: auto;
        }

        .faq-item {
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent2) 100%);
            padding: 20px 28px;
            border-radius: 16px;
            cursor: pointer;
            transition: all 0.28s;
        }

        .faq-item:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(15,63,166,0.28);
        }

        .faq-question {
            font-size: 17px;
            font-weight: 700;
            color: white;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-question::after {
            content: '+';
            font-size: 26px;
            font-weight: 700;
            color: var(--accent-bright);
            transition: transform 0.28s;
        }

        .faq-item.active .faq-question::after { transform: rotate(45deg); }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, margin-top 0.3s ease-out;
            color: rgba(255,255,255,0.9);
            line-height: 1.85;
            font-size: 14.5px;
        }

        .faq-item.active .faq-answer { max-height: 500px; margin-top: 14px; }

        /* ======== 优势 ======== */
        .advantages { padding: 88px 30px; background: white; }

        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
            gap: 36px;
            margin-top: 50px;
        }

        .advantage-item {
            display: flex;
            gap: 22px;
            padding: 28px;
            background: linear-gradient(135deg, var(--bg) 0%, white 100%);
            border-radius: 16px;
            transition: all 0.3s;
            border-left: 5px solid var(--cta);
            box-shadow: var(--card-shadow);
        }

        .advantage-item:hover {
            transform: translateX(8px);
            box-shadow: 0 12px 32px rgba(15,63,166,0.14);
            border-left-color: var(--accent-bright);
        }

        .advantage-icon { font-size: 52px; min-width: 64px; }

        .advantage-content h3 {
            color: var(--primary-dark);
            font-size: 21px;
            margin-bottom: 12px;
            font-weight: 700;
        }

        .advantage-content p { color: var(--muted); line-height: 1.85; font-size: 14.5px; }

        /* ======== 试用区域 ======== */
        .trial-section {
            padding: 88px 30px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 55%, var(--primary-light) 100%);
            color: white;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .trial-section::before {
            content: '';
            position: absolute;
            top: -50%; left: -10%;
            width: 500px; height: 500px;
            background: radial-gradient(circle, rgba(56,182,255,0.12) 0%, transparent 70%);
            border-radius: 50%;
        }

        .trial-section::after {
            content: '';
            position: absolute;
            bottom: -50%; right: -10%;
            width: 600px; height: 600px;
            background: radial-gradient(circle, rgba(0,212,255,0.1) 0%, transparent 70%);
            border-radius: 50%;
        }

        .trial-container { position: relative; z-index: 1; }
        .trial-title { font-size: 40px; margin-bottom: 28px; font-weight: 900; line-height: 1.25; }

        .trial-benefits {
            display: flex;
            justify-content: center;
            gap: 56px;
            margin: 48px 0;
            flex-wrap: wrap;
        }

        .trial-benefit { text-align: center; }

        .trial-benefit-value {
            font-size: 46px;
            font-weight: 900;
            color: var(--accent-bright);
            margin-bottom: 8px;
            font-family: 'Rajdhani', sans-serif;
        }

        .trial-benefit-label { font-size: 15px; color: rgba(255,255,255,0.78); }

        /* ======== 页脚 ======== */
        .footer {
            background: #0a1a3a;
            color: #94a3b8;
            padding: 60px 30px 28px;
        }

        .footer-content {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-section h3 { color: var(--accent-bright); margin-bottom: 20px; font-size: 18px; }

        .footer-section ul { list-style: none; }
        .footer-section ul li { margin: 11px 0; }
        .footer-section ul li a { color: #94a3b8; text-decoration: none; transition: all 0.25s; font-size: 14px; }
        .footer-section ul li a:hover { color: var(--accent-bright); padding-left: 5px; }

        .contact-info { display: flex; flex-direction: column; gap: 13px; }

        .contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 11px 18px;
            background: rgba(56,182,255,0.10);
            border-radius: 8px;
            text-decoration: none;
            color: var(--accent-bright);
            transition: all 0.25s;
            border: 1px solid rgba(56,182,255,0.18);
            font-size: 14px;
        }

        .contact-item:hover {
            background: rgba(56,182,255,0.20);
            transform: translateX(5px);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 28px;
            border-top: 1px solid #1e2d4a;
            color: #475569;
            font-size: 13px;
        }

        /* ======== 响应式 ======== */
        @media (max-width: 968px) {
            .nav-menu { display: none; }
            .hero-container { flex-direction: column; gap: 30px; }
            .hero-image { width: 100%; height: auto; max-width: 420px; }
            .hero-content h1 { font-size: 32px; }
            .hero-features { font-size: 15px; }
            .section-title { font-size: 28px; }
            .service-grid { grid-template-columns: 1fr; }
            .plans-grid { grid-template-columns: 1fr; }
            .advantages-grid { grid-template-columns: 1fr; }
            .faq-grid { grid-template-columns: 1fr; }
            .floating-contact { right: 8px; }
            .comparison-grid { font-size: 12px; grid-template-columns: 140px repeat(3, 1fr); }
            .comparison-header, .comparison-cell { padding: 9px; }
            .region-tabs { justify-content: flex-start; }
            .trial-title { font-size: 28px; }
        }

        /* ======== 动画 ======== */
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(30px); }
            to   { opacity: 1; transform: translateY(0); }
        }

        .fade-in-up { animation: fadeInUp 0.6s ease-out; }
    .contact-icon img{width:24px;height:24px;display:block;object-fit:contain}.footer .footer-contact-clean{display:flex;flex-direction:column;gap:12px;margin-top:12px}.footer .footer-contact-card{display:flex;align-items:center;gap:12px;padding:13px 16px;border:1px solid rgba(56,182,255,.28);border-radius:9px;background:rgba(56,182,255,.08);color:#eaf7ff;text-decoration:none;transition:all .25s ease}.footer .footer-contact-card:hover{background:rgba(56,182,255,.18);border-color:rgba(56,182,255,.65);transform:translateY(-2px)}.footer .footer-service-link{background:linear-gradient(135deg,rgba(30,144,255,.18),rgba(0,212,255,.10));font-weight:700}.footer .footer-contact-icon{width:24px;height:24px;display:inline-flex;align-items:center;justify-content:center;flex:0 0 24px}.footer .footer-contact-icon img{width:24px;height:24px;display:block;object-fit:contain}