:root{
  --navy:#0f2744; --navy-2:#163a63; --gold:#c9a227; --gold-soft:#f4e8c1;
  --green:#1f7a5c; --bg:#f7f9fc; --text:#1a2332; --muted:#5b6b7c;
  --white:#fff; --line:#e3e9f1; --shadow:0 10px 30px rgba(15,39,68,.08);
  --radius:16px; --max:1120px;
}
*{box-sizing:border-box} html{scroll-behavior:smooth}
body{margin:0;font-family:"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--text);background:var(--bg);line-height:1.7}
a{color:var(--navy-2);text-decoration:none} a:hover{color:var(--gold)}
img{max-width:100%;display:block}
.container{width:min(100% - 2rem, var(--max));margin-inline:auto}
.skip{position:absolute;left:-999px} .skip:focus{left:1rem;top:1rem;background:#fff;padding:.5rem 1rem;z-index:99}
.site-header{position:sticky;top:0;z-index:50;background:rgba(15,39,68,.96);backdrop-filter:blur(8px);color:#fff;box-shadow:0 2px 12px rgba(0,0,0,.12)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.85rem 0}
.brand{display:flex;align-items:center;gap:.75rem;color:#fff}
.brand-mark{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--gold),#e8d48b);color:var(--navy);display:grid;place-items:center;font-weight:800}
.brand strong{display:block;font-size:1.05rem;letter-spacing:.02em}
.brand span{display:block;font-size:.75rem;opacity:.8}
.nav-links{display:flex;flex-wrap:wrap;gap:.35rem 1rem;align-items:center}
.nav-links a{color:#e8eef7;font-size:.95rem}
.nav-links a.active,.nav-links a:hover{color:var(--gold)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;padding:.72rem 1.2rem;border-radius:999px;border:1px solid transparent;font-weight:600;cursor:pointer;transition:.2s}
.btn-primary{background:var(--gold);color:var(--navy)} .btn-primary:hover{filter:brightness(1.05);color:var(--navy)}
.btn-outline{background:transparent;border-color:rgba(255,255,255,.35);color:#fff}
.btn-outline-dark{background:#fff;border-color:var(--line);color:var(--navy)}
.btn-green{background:var(--green);color:#fff}
.hero{background:radial-gradient(circle at 20% 20%, #1d4f86, var(--navy) 55%), linear-gradient(120deg,var(--navy),#0b1a2e);color:#fff;padding:4.2rem 0 3.5rem;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-80px;top:-40px;width:320px;height:320px;border-radius:50%;background:rgba(201,162,39,.12)}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:2rem;align-items:center;position:relative;z-index:1}
.eyebrow{display:inline-block;padding:.25rem .7rem;border-radius:999px;background:rgba(201,162,39,.18);color:var(--gold-soft);font-size:.82rem;margin-bottom:1rem}
.hero h1{font-size:clamp(1.8rem,4vw,2.7rem);line-height:1.25;margin:0 0 1rem}
.hero p.lead{font-size:1.08rem;opacity:.92;max-width:38rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:.8rem;margin-top:1.5rem}
.hero-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);padding:1.2rem;backdrop-filter:blur(6px)}
.hero-card img{border-radius:12px;width:100%;aspect-ratio:1;object-fit:cover;margin-bottom:.9rem}
.hero-card h3{margin:.2rem 0;font-size:1.15rem}
.hero-card .meta{font-size:.9rem;opacity:.85}
.section{padding:3.2rem 0}
.section-head{display:flex;justify-content:space-between;gap:1rem;align-items:end;margin-bottom:1.6rem;flex-wrap:wrap}
.section-head h2{margin:0;font-size:clamp(1.4rem,3vw,1.9rem);color:var(--navy)}
.section-head p{margin:0;color:var(--muted);max-width:36rem}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
.grid-2{display:grid;grid-template-columns:1.1fr .9fr;gap:1.5rem}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:1.25rem;box-shadow:var(--shadow)}
.card h3{margin:.2rem 0 .6rem;color:var(--navy)}
.card .tag{display:inline-block;font-size:.75rem;padding:.15rem .55rem;border-radius:999px;background:var(--gold-soft);color:#7a5d10;margin-bottom:.6rem}
.muted{color:var(--muted)} .small{font-size:.9rem}
.list-check{padding-left:1.1rem;margin:.4rem 0} .list-check li{margin:.25rem 0}
.teacher-panel{display:grid;grid-template-columns:.9fr 1.1fr;gap:1.5rem;align-items:center}
.teacher-panel .photo{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.teacher-panel .photo img{width:100%;aspect-ratio:4/3;object-fit:cover;object-position:center 20%}
.badge-row{display:flex;flex-wrap:wrap;gap:.45rem;margin:1rem 0}
.badge{background:#eef4fb;color:var(--navy-2);padding:.25rem .65rem;border-radius:999px;font-size:.82rem}
.cta-band{background:linear-gradient(120deg,var(--navy-2),var(--navy));color:#fff;border-radius:var(--radius);padding:2rem;display:flex;justify-content:space-between;gap:1rem;align-items:center;flex-wrap:wrap}
.site-footer{background:#0b1728;color:#c9d4e3;padding:2.4rem 0 1.5rem;margin-top:2rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:1.5rem}
.site-footer a{color:#e8eef7} .site-footer h4{color:#fff;margin:0 0 .7rem}
.foot-note{border-top:1px solid rgba(255,255,255,.1);margin-top:1.5rem;padding-top:1rem;font-size:.85rem;opacity:.75}
.page-hero{padding:2.4rem 0 1.2rem;background:linear-gradient(180deg,#eaf0f8,var(--bg))}
.page-hero h1{margin:0 0 .5rem;color:var(--navy);font-size:clamp(1.6rem,3vw,2.2rem)}
.table{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;overflow:hidden;border:1px solid var(--line)}
.table th,.table td{padding:.85rem 1rem;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.table th{background:#eef3fa;color:var(--navy);width:28%}
.placeholder{background:#fff7e6;color:#8a5a00;padding:.15rem .4rem;border-radius:4px;font-weight:600}
.form{display:grid;gap:1rem}
.form label{display:grid;gap:.35rem;font-weight:600;color:var(--navy)}
.form input,.form select,.form textarea{padding:.75rem .9rem;border:1px solid var(--line);border-radius:10px;font:inherit;background:#fff}
.form textarea{min-height:110px;resize:vertical}
.qr-box{text-align:center;padding:1rem;background:#fff;border:1px dashed var(--line);border-radius:12px}
.qr-box img{width:min(220px,100%);margin:0 auto .7rem}
.note{background:#eef8f3;border-left:4px solid var(--green);padding:.8rem 1rem;border-radius:8px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:.9rem 1rem;margin-bottom:.7rem}
.faq summary{cursor:pointer;font-weight:600;color:var(--navy)}
@media (max-width:900px){
  .hero-grid,.teacher-panel,.grid-2,.footer-grid{grid-template-columns:1fr}
  .grid-4,.grid-3{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
  .nav-links.open{display:flex;position:absolute;left:0;right:0;top:64px;background:var(--navy);padding:1rem;flex-direction:column}
  .menu-btn{display:inline-flex}
}
@media (max-width:560px){.grid-4,.grid-3{grid-template-columns:1fr}}
.menu-btn{display:none;background:transparent;border:1px solid rgba(255,255,255,.3);color:#fff;border-radius:8px;padding:.4rem .7rem}