:root{--ink:#153d39;--dim:#607771;--muted:#607771;--line:#dce8e4;--primary:#087f75;--accent:#dcf3a3;--surface:#fff;--bg:#f6f9f7;--font-body:Arial,Helvetica,sans-serif;--font-hero:Arial,Helvetica,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 var(--font-body)}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}button,input,select,textarea{font:inherit}button,.btn{display:inline-flex;align-items:center;justify-content:center;gap:12px;background:var(--primary);border:1px solid var(--primary);border-radius:10px;color:#fff;padding:11px 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var(--line);background:#fff;overflow:auto;margin-bottom:25px}table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:14px 16px;border-bottom:1px solid var(--line);vertical-align:top}th{background:#edf4ef;font-size:12px}tr:last-child td{border-bottom:0}.class-table .btn{padding:6px 12px;font-size:12px;min-height:36px}.class-note,.note,.alert{padding:14px 18px;border-radius:10px;background:#fff4db;border:1px solid #ecd9a8;color:#735c29}.alert{font-size:14px}.auth-layout{display:grid;grid-template-columns:1fr 1fr;gap:100px;align-items:center;padding:45px 15px}.auth-intro h1{font-size:46px;line-height:1.2}.auth-intro p{max-width:380px}.auth-card{max-width:500px;padding:34px}.auth-card h1{font-size:30px}.auth-card h2{font-size:26px}.centered{margin:30px auto}.divider{display:flex;align-items:center;gap:14px;color:var(--dim);font-size:12px;margin:23px 0}.divider:before,.divider:after{content:'';flex:1;height:1px;background:var(--line)}.auth-card 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#153c3920;border-radius:10px;padding:15px;width:210px}.account a{display:block;padding:8px 0}.account form{margin:0}footer{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:22px max(24px,calc((100vw - 1160px)/2));border-top:1px solid var(--line);font-size:12px;background:white;color:var(--dim)}footer>div{display:flex;align-items:center;gap:20px}footer button{font-size:12px}dialog{border:1px solid var(--line);border-radius:16px;padding:30px;max-width:min(540px,90vw);color:var(--ink)}dialog::backdrop{background:#102f2ccc}.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;z-index:9999;background:white;padding:10px}[hidden]{display:none!important}.class-camera{background:#e9f1ed}code{overflow-wrap:anywhere}.class-map{border-radius:12px}.class-form .inline{flex-wrap:wrap}
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@media(max-width:650px){.topbar{padding:15px 18px;align-items:flex-start;gap:12px;flex-wrap:wrap}.brand{font-size:21px}.topbar nav{width:100%;justify-content:space-between;gap:10px;font-size:12px;flex-wrap:wrap}.topbar nav>.btn{padding:7px 12px;min-height:36px;font-size:12px}.shell{padding:25px 18px 45px}.hero{grid-template-columns:1fr;padding:22px 0 34px;gap:26px}.hero h1{font-size:43px;letter-spacing:-1.8px}.hero-copy{font-size:16px}.hero-preview{transform:none;max-width:450px;width:100%;margin:auto}.map-art{height:180px}.benefits{grid-template-columns:1fr;gap:8px;padding:25px 0}.benefits article{padding:14px 0;border-bottom:1px solid var(--line)}.number{margin-bottom:6px}.price-banner{padding:24px;align-items:flex-start;flex-direction:column}.price-banner h2{font-size:29px}.pricing-grid,.auth-layout{grid-template-columns:1fr;gap:8px}.auth-layout{padding:12px 0}.auth-intro{display:none}.auth-card{padding:25px;margin:10px auto;width:100%}.page-heading{align-items:flex-start;gap:14px;flex-direction:column}.page-heading h1{font-size:32px}.card{padding:20px}.join-form{grid-template-columns:1fr}.class-grid{grid-template-columns:1fr}.classroom-list{grid-template-columns:1fr}.class-form .class-grid{gap:15px}footer{padding:20px 18px;align-items:flex-start;flex-direction:column;gap:7px}.class-table{max-width:100%}table{min-width:480px}.section-heading h1{font-size:31px}.account{max-width:145px}.actions>.btn{flex:1}.class-section h2{font-size:22px}}