:root{
    --blue:#e8f7ff;
    --blue-deep:#4aa9d6;
    --yellow:#fff4c9;
    --orange:#ffad66;
    --orange-soft:#ffe4cc;
    --ink:#203040;
    --muted:#66798c;
    --card:#ffffff;
    --line:#dcecf4;
    --shadow:0 18px 46px rgba(64,124,160,.14);
    --radius:28px;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:linear-gradient(180deg,#f7fcff 0%,#fffaf0 46%,#ffffff 100%);line-height:1.72}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1180px,calc(100% - 36px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.86);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:78px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:56px;height:56px;border-radius:20px;background:linear-gradient(145deg,var(--blue-deep),#83d1f0);color:white;font-size:24px;box-shadow:0 12px 24px rgba(74,169,214,.25)}
.brand-copy{font-size:15px;color:var(--muted)}
.main-nav{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.main-nav a{padding:10px 14px;border-radius:999px;color:#45606f;font-weight:700;font-size:15px}
.main-nav a:hover,.main-nav a.active{background:var(--blue);color:#137aa8}
.nav-toggle{display:none;border:0;background:var(--blue);border-radius:14px;padding:9px 12px;font-size:20px;color:#227ba2}
.hero{padding:78px 0 54px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 14px;color:#407890;font-weight:800;box-shadow:0 10px 28px rgba(74,169,214,.12)}
h1{font-size:clamp(34px,5vw,62px);line-height:1.12;margin:22px 0 18px;letter-spacing:-1px}
.lead{font-size:18px;color:#526d7c;margin:0 0 26px;max-width:710px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin:26px 0 26px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;padding:13px 20px;font-weight:800;border:1px solid transparent;transition:.2s ease;background:#fff}
.btn.primary{background:linear-gradient(135deg,var(--orange),#ffcf77);color:#5a3414;box-shadow:0 14px 28px rgba(255,173,102,.25)}
.btn.secondary{border-color:var(--line);color:#286f8d}
.btn:hover{transform:translateY(-2px)}
.hero-badges{display:flex;gap:10px;flex-wrap:wrap;color:#587080}
.hero-badges span,.tag{border:1px solid var(--line);background:rgba(255,255,255,.85);border-radius:999px;padding:7px 12px;font-size:13px;font-weight:700;color:#547286}
.hero-card{position:relative;background:linear-gradient(155deg,#ffffff 0%,#ecf9ff 58%,#fff4c9 100%);border:1px solid var(--line);border-radius:36px;padding:20px;box-shadow:var(--shadow)}
.hero-card .floating{position:absolute;right:24px;top:24px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:12px 14px;box-shadow:0 12px 25px rgba(64,124,160,.15);font-weight:800;color:#24799e}
.section{padding:64px 0}
.section.alt{background:rgba(232,247,255,.48)}
.section-head{display:flex;justify-content:space-between;gap:24px;align-items:flex-end;margin-bottom:28px}
.section-head h2{font-size:clamp(28px,3vw,42px);line-height:1.18;margin:0}
.section-head p{color:var(--muted);max-width:620px;margin:10px 0 0}
.grid{display:grid;gap:20px}
.grid.three{grid-template-columns:repeat(3,1fr)}
.grid.four{grid-template-columns:repeat(4,1fr)}
.grid.two{grid-template-columns:repeat(2,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:0 12px 34px rgba(64,124,160,.08)}
.card h3{margin:0 0 10px;font-size:22px}
.card p{margin:0;color:#5c7380}
.card ul{margin:14px 0 0;padding-left:20px;color:#5c7380}
.card li{margin:6px 0}
.card-figure{border-radius:22px;background:linear-gradient(145deg,var(--blue),var(--yellow));padding:12px;margin-bottom:16px;overflow:hidden}
.age-card{position:relative;overflow:hidden;min-height:230px}
.age-card strong{display:inline-flex;width:58px;height:58px;align-items:center;justify-content:center;border-radius:20px;background:var(--yellow);font-size:18px;margin-bottom:18px;color:#80581c}
.age-card:after{content:"";position:absolute;width:120px;height:120px;border-radius:50%;background:rgba(255,173,102,.16);right:-32px;bottom:-32px}
.list-card{display:flex;gap:18px;align-items:flex-start}
.list-card img{width:132px;flex:0 0 132px;border-radius:22px;background:var(--blue)}
.inline-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.feature-row{display:grid;grid-template-columns:.88fr 1.12fr;gap:28px;align-items:center}
.soft-panel{background:linear-gradient(135deg,#ffffff,#eefaff);border:1px solid var(--line);border-radius:36px;padding:26px;box-shadow:var(--shadow)}
.steps{counter-reset:step;display:grid;gap:16px}
.step{display:grid;grid-template-columns:48px 1fr;gap:14px;align-items:start;background:#fff;border:1px solid var(--line);border-radius:22px;padding:16px}
.step:before{counter-increment:step;content:counter(step);display:flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:18px;background:var(--orange-soft);font-weight:900;color:#9a551a}
.feedback{display:grid;gap:20px;grid-template-columns:repeat(3,1fr)}
.quote{background:#fff;border:1px solid var(--line);border-radius:28px;padding:22px;box-shadow:0 12px 34px rgba(64,124,160,.08)}
.quote-head{display:flex;gap:12px;align-items:center;margin-bottom:12px}
.avatar{width:48px;height:48px;border-radius:18px;background:linear-gradient(135deg,var(--blue-deep),#ffd18f);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:900}
.faq{display:grid;gap:14px}
details{background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px 20px;box-shadow:0 10px 26px rgba(64,124,160,.06)}
summary{font-weight:900;cursor:pointer;color:#29465a}
details p{margin:12px 0 0;color:#5c7380}
.banner{padding:54px 0;background:linear-gradient(135deg,#eaf8ff,#fff4c9)}
.banner-inner{display:grid;grid-template-columns:1fr auto;align-items:center;gap:28px}
.page-hero{padding:58px 0;background:linear-gradient(135deg,#f3fbff,#fff7d8);border-bottom:1px solid var(--line)}
.page-hero h1{font-size:clamp(32px,4vw,54px)}
.kicker{color:#2b83aa;font-weight:900;letter-spacing:.08em}
.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:26px;background:#fff;box-shadow:0 12px 34px rgba(64,124,160,.08)}
table{width:100%;border-collapse:collapse;min-width:680px}
th,td{text-align:left;padding:16px 18px;border-bottom:1px solid var(--line)}
th{background:#f3fbff;color:#38677a}tr:last-child td{border-bottom:0}
.form{display:grid;gap:14px}
.form label{font-weight:800;color:#365769}
.form input,.form textarea,.form select{width:100%;border:1px solid var(--line);border-radius:18px;padding:13px 14px;background:#fff;font:inherit;color:var(--ink)}
.form textarea{min-height:120px;resize:vertical}
.notice{background:#fff8db;border:1px solid #ffe5a3;border-radius:22px;padding:18px;color:#72531e}
.site-footer{background:#223645;color:#eaf6fb;padding:46px 0 24px;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:28px}
.site-footer p,.footer-note{color:#c9d9e2}.site-footer a{color:#fff}.footer-note{border-top:1px solid rgba(255,255,255,.14);margin-top:28px;padding-top:18px;font-size:14px}
.video-shell{position:relative;border-radius:26px;overflow:hidden;background:#dff4ff;border:1px solid var(--line)}
.play-dot{position:absolute;inset:auto auto 18px 18px;width:54px;height:54px;border-radius:50%;background:rgba(255,255,255,.88);display:flex;align-items:center;justify-content:center;font-weight:900;color:#287da2;box-shadow:0 12px 26px rgba(64,124,160,.18)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center}
@media (max-width:920px){
    .hero-grid,.feature-row,.banner-inner,.split{grid-template-columns:1fr}
    .grid.three,.grid.four,.feedback,.footer-grid{grid-template-columns:1fr 1fr}
    .section-head{display:block}
}
@media (max-width:720px){
    .container{width:min(100% - 28px,1180px)}
    .header-inner{min-height:70px}
    .nav-toggle{display:inline-flex}
    .main-nav{display:none;position:absolute;left:14px;right:14px;top:72px;background:#fff;border:1px solid var(--line);border-radius:24px;padding:12px;box-shadow:var(--shadow)}
    .main-nav.open{display:grid;grid-template-columns:1fr 1fr}
    .hero{padding:42px 0 30px}
    .grid.three,.grid.four,.grid.two,.feedback,.footer-grid{grid-template-columns:1fr}
    .list-card{display:block}.list-card img{width:100%;margin-bottom:14px}
    .section{padding:42px 0}
}