:root{
  --blue:#7cc9f8;
  --blue-deep:#267da7;
  --cream:#fff4c9;
  --orange:#ffad66;
  --orange-deep:#db7137;
  --mint:#d8f7e7;
  --ink:#243340;
  --muted:#667784;
  --line:#e8f0f5;
  --card:#ffffff;
  --bg:#fbfdff;
  --shadow:0 18px 45px rgba(43,102,134,.12);
  --radius:28px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.75}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1180px,calc(100% - 32px));margin-inline:auto}
.skip-link{position:absolute;left:-999px;top:8px;background:#fff;padding:10px 14px;border-radius:10px;box-shadow:var(--shadow);z-index:20}.skip-link:focus{left:10px}
.site-header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.88);backdrop-filter:saturate(160%) blur(12px);border-bottom:1px solid rgba(124,201,248,.22)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:76px}
.brand{display:flex;align-items:center;gap:10px;font-weight:900;letter-spacing:.02em}.brand-mark{width:42px;height:42px;border-radius:15px;background:linear-gradient(135deg,var(--blue),var(--cream));display:grid;place-items:center;color:#15516f;box-shadow:0 12px 28px rgba(124,201,248,.28)}.brand-text{font-size:1.25rem}
.site-nav{display:flex;align-items:center;gap:6px}.site-nav a{padding:10px 14px;border-radius:999px;color:#355061;font-weight:700}.site-nav a:hover,.site-nav a[aria-current="page"]{background:#eaf7ff;color:#176b92}
.nav-toggle{display:none;border:0;border-radius:999px;background:var(--cream);padding:10px 15px;font-weight:800;color:#614b13}
.hero{position:relative;overflow:hidden;padding:70px 0 58px;background:radial-gradient(circle at 20% 15%,#fff4c9 0 20%,transparent 34%),radial-gradient(circle at 90% 30%,#d8f7e7 0 18%,transparent 32%),linear-gradient(135deg,#f1fbff,#fffdf5)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.04fr) minmax(320px,.96fr);gap:44px;align-items:center}.hero h1,.page-hero h1{font-size:clamp(2rem,4.6vw,4.6rem);line-height:1.12;margin:0 0 20px;letter-spacing:-.05em}.hero p,.page-hero p{font-size:1.12rem;color:#4d6472;margin:0 0 24px}.hero-art{border-radius:36px;background:rgba(255,255,255,.72);padding:18px;box-shadow:var(--shadow);border:1px solid rgba(124,201,248,.25)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 13px;border-radius:999px;background:#fff7d9;color:#7b5c11;font-weight:800;margin-bottom:16px}.eyebrow:before{content:"";width:9px;height:9px;border-radius:50%;background:var(--orange)}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 20px;border-radius:999px;font-weight:900;border:1px solid transparent;transition:.2s ease;cursor:pointer}.btn-primary{background:var(--blue-deep);color:white;box-shadow:0 14px 26px rgba(38,125,167,.24)}.btn-primary:hover{transform:translateY(-2px)}.btn-soft{background:white;color:#1e6a92;border-color:#d7edf7}.btn-warm{background:var(--cream);color:#79561f}.btn-small{padding:9px 14px;font-size:.92rem}
.hero-pills,.pill-row{display:flex;flex-wrap:wrap;gap:10px}.pill{padding:7px 12px;border-radius:999px;background:white;border:1px solid #dceef8;color:#3f6576;font-size:.92rem;font-weight:700}.pill.orange{background:#fff2e7;border-color:#ffd7b7;color:#a85723}.pill.mint{background:#edfff5;border-color:#c9f1da;color:#26734b}
.section{padding:72px 0}.section-soft{background:linear-gradient(180deg,#fff,#f2fbff)}.section-warm{background:linear-gradient(180deg,#fffaf0,#fff)}.section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:28px}.section-head h2,.copy h2{font-size:clamp(1.7rem,3vw,2.7rem);line-height:1.2;margin:0}.section-head p,.copy p{color:var(--muted);margin:.45rem 0 0;max-width:720px}.grid{display:grid;gap:20px}.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:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:0 12px 28px rgba(43,102,134,.07)}.card h3{font-size:1.22rem;margin:.1rem 0 .55rem}.card p{color:var(--muted);margin:0}.card-icon{width:54px;height:54px;border-radius:20px;background:#eaf7ff;display:grid;place-items:center;font-size:1.5rem;margin-bottom:14px}.card-warm .card-icon{background:#fff4c9}.card-mint .card-icon{background:#d8f7e7}.card-img{border-radius:22px;overflow:hidden;border:1px solid #e2f0f7;margin-bottom:16px;background:#fff}.card-list{padding-left:1.2rem;margin:.7rem 0 0;color:#566b77}.card-list li{margin:.28rem 0}.tagline{font-size:.86rem;color:#6b7c85;display:block;margin-top:10px}.age-card{position:relative;overflow:hidden}.age-badge{display:inline-flex;align-items:center;justify-content:center;min-width:66px;height:42px;border-radius:18px;background:var(--cream);font-weight:900;color:#805a11;margin-bottom:14px}.age-card:nth-child(2) .age-badge{background:#e8f8ff;color:#176b92}.age-card:nth-child(3) .age-badge{background:#edfff5;color:#24744a}.age-card:nth-child(4) .age-badge{background:#fff0e4;color:#a45b24}
.feature-band{border-radius:38px;background:linear-gradient(135deg,#267da7,#7cc9f8);color:white;padding:34px;box-shadow:var(--shadow);display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:center}.feature-band p{color:rgba(255,255,255,.9)}.feature-band .pill{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.28);color:white}.feature-band img{border-radius:28px;background:#fff;padding:8px}
.topic-list{display:grid;gap:14px}.topic-item{display:flex;gap:14px;align-items:flex-start;background:white;border:1px solid var(--line);border-radius:22px;padding:16px}.topic-num{flex:0 0 38px;width:38px;height:38px;border-radius:14px;background:var(--cream);display:grid;place-items:center;font-weight:900;color:#785817}.topic-item h3{margin:0 0 4px;font-size:1.05rem}.topic-item p{margin:0;color:var(--muted)}
.video-card{overflow:hidden;padding:0}.video-card .body{padding:20px}.video-thumb{position:relative;background:#eef9ff}.play-dot{position:absolute;left:18px;bottom:18px;width:46px;height:46px;border-radius:50%;background:rgba(255,255,255,.92);display:grid;place-items:center;color:#267da7;font-weight:900;box-shadow:0 8px 18px rgba(38,125,167,.18)}
.feedback{display:grid;grid-template-columns:80px 1fr;gap:16px;align-items:start}.avatar{width:72px;height:72px;border-radius:28px;background:#fff7d9;border:1px solid #ffe8a8;display:grid;place-items:center;font-size:1.8rem}.quote{font-size:1rem;color:#4c626f}.quote b{color:#243340}.faq{display:grid;gap:14px}.faq-item{background:white;border:1px solid var(--line);border-radius:22px;overflow:hidden}.faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;text-align:left;background:white;border:0;padding:18px 20px;font-size:1rem;font-weight:900;color:var(--ink);cursor:pointer}.faq-answer{display:none;padding:0 20px 20px;color:var(--muted)}.faq-item.open .faq-answer{display:block}.faq-mark{font-size:1.3rem;color:var(--blue-deep)}
.page-hero{padding:58px 0;background:linear-gradient(135deg,#eefaff,#fff9e7)}.page-hero .inner{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center}.breadcrumbs{display:flex;flex-wrap:wrap;gap:8px;color:#667784;font-size:.92rem;margin-bottom:14px}.breadcrumbs a{color:#176b92;font-weight:800}.content-panel{background:white;border:1px solid var(--line);border-radius:32px;padding:30px;box-shadow:var(--shadow)}.copy h3{font-size:1.35rem;margin:1.4rem 0 .4rem}.copy ul{color:#536976}.copy li{margin:.35rem 0}.split{display:grid;grid-template-columns:.92fr 1.08fr;gap:28px;align-items:start}.notice{border-radius:24px;background:#fff9e7;border:1px solid #ffe7aa;padding:20px;color:#6e541e}.notice strong{color:#583d09}.form-card label{display:block;font-weight:800;margin:14px 0 6px}.form-card input,.form-card textarea,.form-card select{width:100%;border:1px solid #d9e9f0;border-radius:16px;padding:12px 13px;font:inherit;background:#fbfdff;color:var(--ink)}.form-card textarea{min-height:120px;resize:vertical}.form-note{margin-top:12px;color:#667784;font-size:.94rem}.result-note{display:none;margin-top:14px;border-radius:16px;background:#edfff5;border:1px solid #c6ecd6;padding:12px;color:#246b43}.mini-table{display:grid;gap:12px}.mini-row{display:grid;grid-template-columns:150px 1fr;gap:12px;padding:14px;border:1px solid var(--line);border-radius:18px;background:white}.mini-row b{color:#1c607e}.domain-box{background:#eaf7ff;border:1px solid #cae9f8;border-radius:24px;padding:22px}.domain-box strong{display:block;font-size:1.2rem;color:#176b92;word-break:break-all}.filterbar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}.filter-btn{border:1px solid #d9e9f0;background:white;border-radius:999px;padding:9px 14px;font-weight:800;color:#4d6370;cursor:pointer}.filter-btn.active{background:#267da7;color:white;border-color:#267da7}.hide{display:none!important}
.site-footer{padding:46px 0 24px;background:#213847;color:#e9f8ff}.site-footer p,.site-footer a,.footer-bottom{color:#c5dae4}.footer-grid{display:grid;grid-template-columns:1.3fr .8fr 1fr;gap:24px}.site-footer h2{font-size:1rem;margin:0 0 10px;color:#fff}.site-footer a{display:block;margin:6px 0}.footer-brand{font-size:1.35rem;font-weight:900;color:white;margin-bottom:8px}.footer-bottom{display:flex;justify-content:space-between;gap:16px;border-top:1px solid rgba(255,255,255,.12);margin-top:24px;padding-top:18px;font-size:.9rem}.domain-line,.update-line{margin:.2rem 0}
@media (max-width:960px){.hero-grid,.page-hero .inner,.feature-band,.split{grid-template-columns:1fr}.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{grid-template-columns:1fr 1fr}.hero{padding-top:46px}.section{padding:56px 0}}
@media (max-width:760px){.nav-toggle{display:inline-flex}.site-nav{position:absolute;left:16px;right:16px;top:72px;display:none;flex-direction:column;align-items:stretch;background:white;border:1px solid var(--line);border-radius:24px;padding:12px;box-shadow:var(--shadow)}.site-nav.open{display:flex}.site-nav a{padding:12px 14px}.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.section-head{display:block}.hero h1,.page-hero h1{letter-spacing:-.03em}.feature-band{padding:24px;border-radius:28px}.footer-grid,.footer-bottom{grid-template-columns:1fr;display:grid}.mini-row{grid-template-columns:1fr}.feedback{grid-template-columns:1fr}.hero-art{padding:10px;border-radius:28px}.page-hero{padding:42px 0}.container{width:min(100% - 24px,1180px)}}