:root {
            --bg: #060e10;
            --bg-soft: #0c1619;
            --ink: #edf6f2;
            --ink-soft: #b8cfc5;
            --muted: #71998a;
            --accent: #2dd4a8;
            --accent-light: rgba(45, 212, 168, 0.13);
            --coral: #ff6b6b;
            --coral-light: rgba(255, 107, 107, 0.12);
            --mint: #48cae4;
            --mint-light: rgba(72, 202, 228, 0.12);
            --amber: #ffb347;
            --violet: #b388eb;
            --violet-light: rgba(179, 136, 235, 0.12);
            --line: rgba(237, 246, 242, 0.07);
            --line-dark: rgba(237, 246, 242, 0.14);
            --card: #101a1d;
            --card-hover: #162125;
            --shadow: 0 8px 24px rgba(0, 0, 0, 0.28);
            --shadow-lg: 0 20px 48px rgba(0, 0, 0, 0.38);
            --radius-lg: 24px;
            --radius-xl: 32px;
        }
        *{margin:0;padding:0;box-sizing:border-box;}
        html{scroll-behavior:smooth;font-size:16px;overflow-x:hidden;}
        body{font-family:'DM Sans',sans-serif;background:var(--bg);color:var(--ink);overflow-x:hidden;line-height:1.6;-webkit-font-smoothing:antialiased;}
        ::selection{background:var(--accent);color:#000;}
        a{text-decoration:none;color:inherit;transition:all .3s cubic-bezier(.22,1,.36,1);}
        ul{list-style:none;}
        .container{width:100%;max-width:1260px;margin:0 auto;padding:0 clamp(18px,3.5vw,44px);}
        h1,h2,h3{font-family:'Instrument Serif',serif;font-weight:400;letter-spacing:-.02em;}
        /* NAV */
        nav{position:fixed;top:0;left:0;right:0;z-index:999;backdrop-filter:blur(24px) saturate(1.8);-webkit-backdrop-filter:blur(24px) saturate(1.8);background:rgba(6,14,16,0.78);border-bottom:1px solid var(--line);transition:box-shadow .35s ease;}
        nav.scrolled{box-shadow:0 4px 24px rgba(0,0,0,0.45);background:rgba(6,14,16,0.9);}
        .nav-inner{display:flex;align-items:center;justify-content:space-between;height:62px;}
        .logo{display:flex;align-items:center;gap:10px;font-family:'Instrument Serif',serif;font-size:1.3rem;color:var(--ink);letter-spacing:-.01em;z-index:2;}
        .logo-icon{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,var(--accent),#1a9e7a);display:flex;align-items:center;justify-content:center;box-shadow:0 2px 10px rgba(45,212,168,0.35);transition:transform .35s cubic-bezier(.34,1.56,.64,1);}
        .logo:hover .logo-icon{transform:rotate(-6deg) scale(1.1);}
        .nav-right{display:flex;align-items:center;gap:4px;}
        .nav-right a{padding:8px 15px;border-radius:8px;font-size:.86rem;font-weight:500;color:var(--ink-soft);transition:all .22s ease;}
        .nav-right a:hover{background:rgba(255,255,255,0.04);color:var(--ink);}
        .nav-right a.active{background:var(--accent-light);color:var(--accent);font-weight:600;}
        .mobile-btn{display:none;background:none;border:none;color:var(--ink);font-size:1.5rem;cursor:pointer;padding:4px;z-index:2;}
        .breadcrumb{padding:16px 0 0;font-size:.78rem;color:var(--muted);position:relative;z-index:2;margin-top:62px;}
        .breadcrumb a{color:var(--muted);} .breadcrumb a:hover{color:var(--accent);}
        .breadcrumb span.sep{margin:0 6px;opacity:.5;}
        /* HERO */
        .hero{padding:clamp(40px,6vh,80px) 0 clamp(50px,8vh,100px);text-align:center;position:relative;z-index:1;}
        .hero h1{font-size:clamp(2.4rem,5vw,4rem);line-height:1.1;margin-bottom:16px;}
        .hero h1 em{font-style:italic;color:var(--accent);}
        .hero .sub{color:var(--muted);font-size:1rem;max-width:520px;margin:0 auto 24px;}
        .countdown-bar{display:inline-flex;align-items:center;gap:12px;background:var(--card);border:1px solid var(--line);border-radius:100px;padding:8px 20px;font-family:'JetBrains Mono',monospace;font-size:.85rem;color:var(--ink-soft);margin-bottom:32px;}
        .countdown-bar .live-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);animation:dotPulse 2s infinite;}
        @keyframes dotPulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:0.4;transform:scale(1.4);}}
        .countdown-bar strong{color:var(--accent);}
        /* PRICING CARDS */
        .pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch;margin-bottom:80px;}
        .plan-card{background:var(--card);border:1.5px solid var(--line);border-radius:var(--radius-xl);padding:clamp(28px,3vw,40px);text-align:center;transition:all .4s ease;display:flex;flex-direction:column;position:relative;overflow:hidden;}
        .plan-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);background:var(--card-hover);}
        .plan-card.featured{border-color:var(--accent);background:#121f24;box-shadow:var(--shadow-lg);transform:scale(1.04);z-index:2;}
        .plan-card.featured:hover{transform:scale(1.04) translateY(-6px);box-shadow:0 12px 40px rgba(45,212,168,0.25),0 30px 72px rgba(0,0,0,0.5);}
        .plan-badge{display:inline-block;padding:4px 14px;border-radius:100px;font-family:'JetBrains Mono',monospace;font-size:.7rem;font-weight:600;letter-spacing:.04em;margin-bottom:16px;background:var(--accent-light);color:var(--accent);}
        .plan-card.featured .plan-badge{background:var(--accent);color:#000;}
        .plan-name{font-family:'Instrument Serif',serif;font-size:1.7rem;margin-bottom:4px;color:var(--ink);}
        .plan-slogan{font-size:.8rem;color:var(--muted);margin-bottom:18px;}
        .plan-price{font-family:'Instrument Serif',serif;font-size:3.2rem;line-height:1;margin-bottom:6px;display:flex;align-items:baseline;justify-content:center;gap:4px;}
        .plan-price .currency{font-size:1.2rem;color:var(--muted);}
        .plan-price .num{color:var(--ink);}
        .plan-card.featured .plan-price .num{color:var(--accent);}
        .plan-period{font-size:.78rem;color:var(--muted);margin-bottom:22px;}
        .plan-save{background:var(--accent-light);color:var(--accent);font-size:.75rem;padding:4px 12px;border-radius:20px;display:inline-block;margin-bottom:18px;font-weight:600;}
        .plan-features{text-align:left;margin-bottom:28px;flex:1;}
        .plan-features li{padding:8px 0;font-size:.85rem;color:var(--ink-soft);display:flex;align-items:center;gap:8px;border-bottom:1px solid var(--line);}
        .plan-features li:last-child{border-bottom:none;}
        .check-icon{width:18px;height:18px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.6rem;color:#000;flex-shrink:0;background:var(--accent);}
        .btn-solid{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:14px 28px;border-radius:12px;background:var(--accent);color:#000;font-weight:600;font-size:.93rem;border:none;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 18px rgba(45,212,168,0.35);text-decoration:none;width:100%;}
        .btn-solid:hover{background:#3de0b5;box-shadow:0 8px 30px rgba(45,212,168,0.55);transform:translateY(-2px);}
        /* 省钱技巧 */
        .savings-section{padding:clamp(50px,7vh,90px) 0;border-top:1px solid var(--line);}
        .section-head{text-align:center;margin-bottom:clamp(36px,4.5vw,58px);}
        .section-tag{display:inline-flex;align-items:center;gap:8px;font-family:'JetBrains Mono',monospace;font-size:.73rem;font-weight:500;color:var(--accent);letter-spacing:.13em;text-transform:uppercase;margin-bottom:12px;}
        .section-tag::before,.section-tag::after{content:'';width:18px;height:1px;background:var(--accent);opacity:0.4;}
        .section-head h2{font-size:clamp(1.9rem,3.8vw,3rem);line-height:1.1;margin-bottom:10px;}
        .section-head p{color:var(--muted);font-size:.98rem;max-width:480px;margin:0 auto;}
        .tips-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
        .tip-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;transition:all .35s ease;}
        .tip-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);background:var(--card-hover);}
        .tip-icon{font-size:2rem;margin-bottom:12px;}
        .tip-card h4{font-family:'DM Sans',sans-serif;font-weight:700;font-size:1rem;margin-bottom:8px;letter-spacing:0;color:var(--ink);}
        .tip-card p{font-size:.85rem;color:var(--muted);line-height:1.6;}
        /* 购买须知 */
        .notice-section{padding:clamp(50px,7vh,90px) 0;border-top:1px solid var(--line);}
        .notice-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
        .notice-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px;transition:all .3s ease;}
        .notice-card:hover{background:var(--card-hover);box-shadow:var(--shadow);}
        .notice-card h3{font-family:'DM Sans',sans-serif;font-weight:700;font-size:1rem;margin-bottom:10px;display:flex;align-items:center;gap:8px;color:var(--ink);}
        .notice-card p{font-size:.88rem;color:var(--muted);line-height:1.7;}
        .notice-card .nc-icon{color:var(--accent);}
        /* 对比表格 */
        .compare-section{padding:clamp(50px,7vh,90px) 0;border-top:1px solid var(--line);}
        .comp-table-wrap{overflow-x:auto;}
        .comp-table{width:100%;border-collapse:collapse;font-size:.88rem;min-width:600px;}
        .comp-table th{text-align:left;padding:14px 16px;background:var(--card);color:var(--ink);font-weight:600;border-bottom:1px solid var(--line-dark);}
        .comp-table td{padding:12px 16px;border-bottom:1px solid var(--line);color:var(--ink-soft);}
        .comp-table tr:hover td{background:var(--card-hover);}
        /* CTA */
        .cta-section{padding:clamp(60px,8vh,100px) 0;}
        .cta-inner{background:linear-gradient(135deg,#121f24 0%,#0a1518 100%);border-radius:var(--radius-xl);padding:clamp(44px,5.5vw,72px);text-align:center;position:relative;overflow:hidden;color:#fff;border:1px solid var(--line-dark);}
        .cta-inner::before{content:'';position:absolute;top:-140px;left:50%;width:500px;height:500px;transform:translateX(-50%);background:radial-gradient(circle,rgba(45,212,168,0.18),transparent 60%);pointer-events:none;}
        .cta-inner h2{font-size:clamp(1.8rem,4vw,2.8rem);margin-bottom:12px;position:relative;z-index:1;}
        .cta-inner h2 em{color:var(--accent);}
        .cta-inner p{color:rgba(255,255,255,0.55);margin-bottom:32px;max-width:440px;margin-left:auto;margin-right:auto;position:relative;z-index:1;}
        .cta-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}
        .btn-outline{display:inline-flex;align-items:center;gap:10px;padding:14px 28px;border-radius:12px;background:transparent;color:#fff;font-weight:600;font-size:.95rem;border:1.5px solid rgba(255,255,255,0.2);cursor:pointer;transition:all .3s ease;text-decoration:none;}
        .btn-outline:hover{border-color:var(--accent);background:var(--accent-light);color:var(--accent);}
        /* FOOTER */
        .footer{border-top:1px solid var(--line);padding:50px 0 24px;background:var(--bg-soft);}
        .footer-grid{display:grid;grid-template-columns:2.5fr 1fr 1fr 1fr;gap:clamp(20px,3.5vw,50px);margin-bottom:40px;}
        .footer-brand p{color:var(--muted);font-size:.85rem;max-width:260px;line-height:1.7;margin-top:12px;}
        .footer-col h4{font-family:'JetBrains Mono',monospace;font-size:.72rem;font-weight:500;color:var(--ink);margin-bottom:16px;letter-spacing:.1em;text-transform:uppercase;}
        .footer-col li{margin-bottom:9px;}
        .footer-col a{color:var(--muted);font-size:.85rem;} .footer-col a:hover{color:var(--accent);}
        .footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:20px;border-top:1px solid var(--line);font-size:.75rem;color:var(--muted);font-family:'JetBrains Mono',monospace;}
        .reveal{opacity:0;transform:translateY(28px);transition:all .7s cubic-bezier(.22,1,.36,1);}
        .reveal.show{opacity:1;transform:translateY(0);}
        .reveal-d1{transition-delay:.1s;}.reveal-d2{transition-delay:.2s;}.reveal-d3{transition-delay:.3s;}
        @media(max-width:1024px){
            .pricing-grid{grid-template-columns:1fr 1fr;}
            .plan-card.featured{grid-column:1/-1;transform:none;}
            .plan-card.featured:hover{transform:translateY(-6px);}
            .tips-grid{grid-template-columns:1fr 1fr;}
            .notice-grid{grid-template-columns:1fr;}
            .footer-grid{grid-template-columns:1fr 1fr;}
        }
        @media(max-width:768px){
            .nav-right a:not(.nav-right a.active){display:none;}
            .nav-right a.active{display:block;}
            .mobile-btn{display:block;}
            .pricing-grid{grid-template-columns:1fr;}
            .tips-grid{grid-template-columns:1fr;}
            .footer-grid{grid-template-columns:1fr;}
            .footer-bottom{flex-direction:column;gap:6px;text-align:center;}
        }