:root{--bg:#f5f8fc;--bg2:#edf6fb;--card:#ffffff;--text:#112033;--muted:#5d6b7f;--line:#d7e4ef;--pri:#1296b8;--pri2:#2f6fed;--acc:#21bfa5;--shadow:0 18px 45px rgba(17,32,51,.08);--radius:20px;--container:1180px}
    *{box-sizing:border-box} html{scroll-behavior:smooth}
    body{margin:0;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;background:linear-gradient(180deg,var(--bg) 0%,#fff 45%,var(--bg2) 100%);color:var(--text)}
    a{color:var(--pri2);text-decoration:none} img{display:block;max-width:100%}
    .container{width:min(100% - 32px,var(--container));margin:0 auto}
    header{position:sticky;top:0;z-index:50;background:rgba(245,248,252,.88);backdrop-filter:blur(12px);border-bottom:1px solid rgba(215,228,239,.75)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}
    .brand{display:flex;align-items:center;gap:12px;min-width:0}.brand img{width:42px;height:42px;object-fit:contain}.brand strong{display:block;font-size:18px}.brand span{display:block;font-size:12px;color:var(--muted)}
    .menu{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:flex-end}.menu a{color:var(--text);font-size:14px;padding:8px 10px;border-radius:999px}.menu a:hover,.menu a.active{background:#e8f4fb;color:#0c4e66}
    .nav-actions{display:flex;gap:10px;align-items:center}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:999px;padding:12px 18px;font-weight:700;transition:.25s ease;cursor:pointer}
    .btn.primary{background:linear-gradient(135deg,var(--pri),var(--pri2));color:#fff;box-shadow:0 12px 30px rgba(18,150,184,.22)} .btn.ghost{background:#fff;color:var(--text);border-color:var(--line)}
    .btn:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
    .mobile-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px}
    .hero{padding:36px 0 22px;position:relative;overflow:hidden}
    .hero::before,.hero::after{content:"";position:absolute;border-radius:50%;background:radial-gradient(circle,rgba(33,191,165,.16),transparent 65%);pointer-events:none}
    .hero::before{width:360px;height:360px;right:-140px;top:-80px}.hero::after{width:260px;height:260px;left:-90px;bottom:-110px}
    .hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:22px;align-items:stretch}
    .hero-main,.hero-side,.section-card{background:rgba(255,255,255,.82);border:1px solid rgba(215,228,239,.9);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-main{padding:28px;position:relative;overflow:hidden}.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;background:#e8f7fb;color:#0c596f;border-radius:999px;font-size:13px;font-weight:700}
    h1{margin:16px 0 12px;font-size:clamp(30px,4vw,50px);line-height:1.08;letter-spacing:-.02em} .lead{font-size:16px;line-height:1.8;color:var(--muted);max-width:62ch}
    .hero-points{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0 22px}.tag{padding:8px 12px;border-radius:999px;background:#f3f8fc;border:1px solid var(--line);color:#244055;font-size:13px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px}.meta-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}
    .metric{padding:14px;border:1px solid var(--line);border-radius:16px;background:linear-gradient(180deg,#fff,#f7fbfe)} .metric b{display:block;font-size:22px}.metric span{font-size:13px;color:var(--muted)}
    .hero-side{padding:18px;display:grid;gap:14px}.side-box{padding:16px;border-radius:16px;background:linear-gradient(180deg,#f8fcff,#eef9fd);border:1px solid #dfeef5}
    .side-box h3{margin:0 0 10px;font-size:16px}.side-box p{margin:0;color:var(--muted);line-height:1.75;font-size:14px}
    .section{padding:18px 0}.section-card{padding:24px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:14px;margin-bottom:18px}.section-head h2{margin:0;font-size:28px}.section-head p{margin:0;color:var(--muted)}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .card{border:1px solid var(--line);border-radius:18px;background:#fff;padding:18px;transition:.25s ease;box-shadow:0 10px 24px rgba(17,32,51,.04)} .card:hover{transform:translateY(-4px);box-shadow:0 18px 32px rgba(17,32,51,.08)}
    .card h3,.card h4{margin:0 0 10px}.card p,.card li{color:var(--muted);line-height:1.8}
    .icon{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,#dff7fb,#e7efff);color:#0e5c73;font-weight:800;margin-bottom:12px}
    .steps{counter-reset:step}.step::before{counter-increment:step;content:counter(step);display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--pri),var(--pri2));color:#fff;font-weight:800;margin-bottom:12px}
    .table-wrap{overflow:auto;border:1px solid var(--line);border-radius:18px;background:#fff}.table-wrap table{width:100%;border-collapse:collapse;min-width:900px}.table-wrap th,.table-wrap td{padding:14px 16px;border-bottom:1px solid #edf2f7;text-align:left;vertical-align:top}.table-wrap th{background:#f5fbff;color:#17324d}
    .rating{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin-top:14px}.star{padding:14px;border-radius:16px;background:linear-gradient(180deg,#effbfd,#ffffff);border:1px solid #d5edf2;text-align:center}
    .list-links{display:grid;gap:10px}.list-links a{padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--text)} .list-links a:hover{border-color:#9fd9e6;background:#f5fbff}
    .faq details{border:1px solid var(--line);border-radius:16px;background:#fff;padding:14px 16px}.faq details+details{margin-top:12px}.faq summary{cursor:pointer;font-weight:700;list-style:none}.faq summary::-webkit-details-marker{display:none}.faq p{margin:10px 0 0;color:var(--muted);line-height:1.8}
    .reviews .card{display:flex;flex-direction:column;gap:10px}.avatar{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,#dff7fb,#d6e2ff);display:grid;place-items:center;font-weight:800;color:#114e63}
    .form{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.field{display:flex;flex-direction:column;gap:8px}.field.full{grid-column:1/-1} label{font-size:14px;font-weight:700} input,select,textarea{width:100%;border:1px solid var(--line);border-radius:14px;padding:12px 14px;font:inherit;background:#fff;color:var(--text)} textarea{min-height:120px;resize:vertical}
    .footer{margin-top:20px;padding:22px 0 26px;border-top:1px solid var(--line);background:#f7fbfe;color:#163047}.footer a{color:#0f6790}.foot-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:18px}.small{font-size:13px;color:#5e6d80;line-height:1.8}
    .float-tools{position:fixed;right:16px;bottom:16px;display:grid;gap:10px;z-index:60}.float-tools a,.float-tools button{width:48px;height:48px;border:none;border-radius:16px;display:grid;place-items:center;background:linear-gradient(135deg,var(--pri),var(--pri2));color:#fff;box-shadow:0 16px 30px rgba(18,150,184,.24);cursor:pointer}
    .reveal{opacity:0;transform:translateY(18px);transition:.65s ease}.reveal.show{opacity:1;transform:none}
    .mobile-panel{display:none}
    @media (max-width: 980px){.hero-grid,.grid-3,.grid-4,.grid-2,.foot-grid{grid-template-columns:1fr}.meta-row{grid-template-columns:1fr 1fr}.menu{display:none}.mobile-toggle{display:inline-flex}.mobile-panel{display:none;padding:0 0 14px}.mobile-panel.open{display:block}.mobile-panel .menu{display:grid;justify-content:stretch;padding:12px 0}.mobile-panel .menu a{background:#fff;border:1px solid var(--line)}.nav{flex-wrap:wrap}.nav-actions{margin-left:auto}.form{grid-template-columns:1fr}.rating{grid-template-columns:1fr 1fr}}
    @media (max-width: 640px){.container{width:min(100% - 22px,var(--container))}.hero-main,.hero-side,.section-card{padding:18px}.meta-row{grid-template-columns:1fr}.section-head{flex-direction:column;align-items:flex-start}.float-tools{right:10px;bottom:10px}.hero-actions .btn{width:100%}}