:root{
    --blue:#83c9ee;
    --blue-deep:#2477a3;
    --cream:#fff3c9;
    --orange:#ffb36b;
    --orange-deep:#e97835;
    --white:#ffffff;
    --ink:#284154;
    --muted:#607484;
    --soft:#f7fbff;
    --line:#dceefa;
    --shadow:0 18px 45px rgba(62,125,154,.14);
    --radius:28px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
    margin:0;
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;
    color:var(--ink);
    background:linear-gradient(180deg,#f6fcff 0%,#fff8dc 44%,#fff 100%);
    line-height:1.75;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1180px,92vw);margin:0 auto}
.site-header{
    position:sticky;top:0;z-index:20;
    background:rgba(255,255,255,.88);
    backdrop-filter:blur(16px);
    border-bottom:1px solid rgba(131,201,238,.28);
}
.header-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;color:var(--blue-deep);font-size:24px}
.brand-mark{width:42px;height:42px;border-radius:16px;background:linear-gradient(135deg,var(--blue),var(--cream));display:grid;place-items:center;color:#fff;box-shadow:var(--shadow)}
.main-nav{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.main-nav a{padding:10px 14px;border-radius:999px;color:var(--muted);font-weight:650;font-size:15px}
.main-nav a:hover,.main-nav a.active{background:#e8f7ff;color:var(--blue-deep)}
.nav-toggle{display:none;border:0;background:var(--blue-deep);color:white;border-radius:999px;padding:10px 16px;font-weight:700}
.hero{padding:72px 0 42px;position:relative;overflow:hidden}
.hero:before{content:"";position:absolute;inset:24px auto auto -80px;width:260px;height:260px;border-radius:50%;background:rgba(255,179,107,.18);filter:blur(6px)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.04fr) minmax(320px,.96fr);gap:44px;align-items:center;position:relative}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:#fff7dd;color:#9f5c18;font-weight:750;font-size:14px;margin-bottom:16px}
h1{font-size:clamp(38px,6vw,64px);line-height:1.08;margin:0 0 22px;color:#203b4d;letter-spacing:-1.2px}
h2{font-size:clamp(28px,4vw,42px);line-height:1.18;margin:0 0 14px;color:#203b4d}
h3{font-size:22px;margin:0 0 10px;color:#25475b}
p{margin:0 0 14px}.lead{font-size:19px;color:#526b7d;max-width:760px}.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:999px;font-weight:800;border:2px solid transparent;transition:.2s}.btn-primary{background:var(--orange);color:#fff;box-shadow:0 14px 28px rgba(233,120,53,.22)}.btn-primary:hover{transform:translateY(-2px);background:var(--orange-deep)}.btn-ghost{background:#fff;border-color:#bde5f7;color:var(--blue-deep)}.hero-card{background:#fff;border-radius:36px;padding:18px;box-shadow:var(--shadow);border:1px solid var(--line)}.section{padding:64px 0}.section.alt{background:rgba(255,255,255,.54)}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:30px}.section-head p{color:var(--muted);max-width:680px}.grid{display:grid;gap:22px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.card{background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:0 10px 28px rgba(68,130,160,.08)}.card:hover{box-shadow:var(--shadow);transform:translateY(-2px);transition:.22s}.card img{border-radius:22px;background:#eef9ff;margin-bottom:18px}.pill-row{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}.pill{display:inline-flex;border-radius:999px;padding:6px 11px;background:#eaf8ff;color:var(--blue-deep);font-size:13px;font-weight:750}.pill.orange{background:#fff0df;color:#ad6024}.pill.cream{background:#fff8d8;color:#8d7118}.soft-panel{background:linear-gradient(135deg,#eaf8ff,#fff7dc);border-radius:36px;padding:34px;border:1px solid rgba(131,201,238,.35);box-shadow:var(--shadow)}.feature-list{display:grid;gap:14px;margin:0;padding:0;list-style:none}.feature-list li{display:flex;gap:12px;align-items:flex-start;background:#fff;border-radius:18px;padding:14px 16px;border:1px solid var(--line)}.check{width:26px;height:26px;flex:0 0 auto;border-radius:50%;background:var(--blue);color:white;display:grid;place-items:center;font-weight:900}.timeline{position:relative;display:grid;gap:18px}.timeline:before{content:"";position:absolute;left:18px;top:8px;bottom:8px;width:3px;background:#ccecf9}.timeline-item{position:relative;padding-left:54px}.timeline-item:before{content:"";position:absolute;left:7px;top:8px;width:24px;height:24px;border-radius:50%;background:#fff;border:6px solid var(--orange)}.quote{background:#fff;border-radius:28px;padding:24px;border:1px solid var(--line);position:relative}.quote:before{content:"示例家长反馈";display:inline-block;margin-bottom:12px;padding:5px 10px;border-radius:999px;background:#fff0df;color:#a45a20;font-weight:800;font-size:13px}.faq details{background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px 22px;box-shadow:0 10px 24px rgba(68,130,160,.06)}.faq details+details{margin-top:14px}.faq summary{cursor:pointer;font-weight:800;color:#23475b}.contact-box{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start}.form{display:grid;gap:14px}.form label{font-weight:750;color:#315066}.form input,.form textarea,.form select{width:100%;border:1px solid #bee3f2;border-radius:16px;padding:13px 14px;font:inherit;background:#fff;color:var(--ink)}.form textarea{min-height:132px;resize:vertical}.form-note{font-size:14px;color:var(--muted)}.domain-badge{display:inline-flex;align-items:center;gap:8px;border-radius:999px;background:#eaf8ff;padding:9px 14px;color:var(--blue-deep);font-weight:800}.video-cover{position:relative;overflow:hidden}.play-dot{position:absolute;inset:auto auto 34px 34px;width:58px;height:58px;border-radius:50%;background:rgba(255,255,255,.9);display:grid;place-items:center;color:var(--orange-deep);font-size:24px;box-shadow:var(--shadow)}.site-footer{margin-top:40px;padding:40px 0;background:#1f4358;color:#e9f8ff}.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:28px}.site-footer p{color:#c8e8f5}.site-footer a{color:#fff;font-weight:750}.skip-card{background:#fff8dc}.notice{padding:18px 20px;border-radius:22px;background:#fff8dc;border:1px solid #f3dc8b;color:#725a12}.mini-stat{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:24px}.mini-stat div{background:#fff;border-radius:22px;padding:16px;border:1px solid var(--line);text-align:center}.mini-stat strong{display:block;color:var(--blue-deep);font-size:24px}.breadcrumb{font-size:14px;color:var(--muted);margin:26px 0 0}.breadcrumb a{color:var(--blue-deep);font-weight:750}.page-hero{padding:52px 0 30px}.page-hero .soft-panel{display:grid;grid-template-columns:1.1fr .9fr;align-items:center;gap:24px}.tag-card{border-left:8px solid var(--blue)}.age-big{font-size:34px;color:var(--orange-deep);font-weight:900;margin-bottom:8px}.table-like{display:grid;gap:12px}.table-row{display:grid;grid-template-columns:160px 1fr 1fr;gap:14px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px}.table-row strong{color:var(--blue-deep)}
@media (max-width:960px){.hero-grid,.page-hero .soft-panel,.contact-box{grid-template-columns:1fr}.grid-3,.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.section-head{display:block}.footer-grid{grid-template-columns:1fr 1fr}.table-row{grid-template-columns:1fr}}
@media (max-width:720px){.header-wrap{min-height:68px}.nav-toggle{display:inline-flex}.main-nav{position:absolute;left:4vw;right:4vw;top:72px;display:none;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:24px;padding:12px}.main-nav.open{display:grid}.main-nav a{padding:12px 14px}.grid-2,.grid-3,.grid-4,.footer-grid,.mini-stat{grid-template-columns:1fr}.hero{padding-top:48px}.section{padding:44px 0}.card,.soft-panel{border-radius:24px;padding:20px}.hero-actions{display:grid}.btn{width:100%}}