/* Nachmittagsmathe Mathe-Check · teal #0F766E + yellow #E8B84A · local only */
:root{
  --teal:#0F766E;--teal-deep:#0a5a54;--teal-soft:#d9f0ed;
  --sun:#E8B84A;--sun-deep:#c9922a;--sun-soft:#fff4d6;
  --ink:#14201f;--muted:#5a6a68;--bg:#f7fbfa;--surface:#ffffff;
  --line:#d5e5e2;--ok:#0F766E;--bad:#b45309;
  --font:"Nunito",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --radius:22px;--max:760px;
  --shadow:0 14px 36px rgba(15,118,110,.12);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:radial-gradient(120% 80% at 50% 0%,#fff8e8 0%,var(--bg) 55%);color:var(--ink);font-family:var(--font);font-size:18px;line-height:1.55;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--teal)}
h1,h2,h3{margin:0;line-height:1.15;font-weight:800}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.top{display:flex;align-items:center;justify-content:space-between;padding:18px 0;gap:12px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);font-weight:800}
.brand img{width:48px;height:48px;border-radius:50%;box-shadow:0 4px 12px rgba(15,118,110,.2)}
.brand span{font-size:1.05rem}
.badge{font-size:.78rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;background:var(--sun-soft);color:var(--sun-deep);padding:6px 12px;border-radius:999px;border:1px solid #f0d48a}
.hero{text-align:center;padding:28px 0 18px}
.hero h1{font-size:clamp(1.9rem,5vw,2.8rem);margin-bottom:12px;color:var(--teal-deep)}
.hero h1 em{font-style:normal;color:var(--sun-deep)}
.lead{color:var(--muted);max-width:520px;margin:0 auto 22px;font-size:1.05rem}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px 24px;margin:0 auto 36px}
.klasse-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin:18px 0 8px}
.klasse-btn{appearance:none;border:2px solid var(--line);background:#fff;border-radius:16px;padding:18px 8px;font-family:inherit;font-weight:800;font-size:1.15rem;color:var(--teal-deep);cursor:pointer;transition:.2s}
.klasse-btn:hover,.klasse-btn.selected{border-color:var(--teal);background:var(--teal-soft);transform:translateY(-2px)}
.klasse-btn small{display:block;font-size:.72rem;font-weight:700;color:var(--muted);margin-top:4px;letter-spacing:.04em}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 22px;border-radius:999px;font-weight:800;font-size:1rem;text-decoration:none;border:0;cursor:pointer;font-family:inherit;transition:transform .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px)}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none}
.btn-primary{background:linear-gradient(180deg,#14958c,var(--teal));color:#fff;box-shadow:0 10px 22px rgba(15,118,110,.28)}
.btn-sun{background:linear-gradient(180deg,#f0c86a,var(--sun));color:#3a2a08;box-shadow:0 10px 22px rgba(232,184,74,.4)}
.btn-ghost{background:#fff;border:2px solid var(--line);color:var(--ink)}
.btn-block{width:100%}
.progress{height:10px;background:var(--teal-soft);border-radius:999px;overflow:hidden;margin-bottom:8px}
.progress>span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--teal),var(--sun));transition:width .3s}
.meta{display:flex;justify-content:space-between;font-size:.85rem;font-weight:700;color:var(--muted);margin-bottom:18px}
.q{font-size:1.35rem;font-weight:800;margin:0 0 8px;color:var(--teal-deep)}
.q-sub{font-size:.92rem;color:var(--muted);margin:0 0 18px}
.opts{display:grid;gap:10px}
.opt{appearance:none;border:2px solid var(--line);background:#fff;border-radius:14px;padding:14px 16px;text-align:left;font-family:inherit;font-size:1.05rem;font-weight:700;cursor:pointer;color:var(--ink);transition:.15s}
.opt:hover{border-color:var(--teal);background:var(--teal-soft)}
.opt.selected{border-color:var(--teal);background:var(--teal-soft);box-shadow:0 0 0 3px rgba(15,118,110,.15)}
.nav-row{display:flex;justify-content:space-between;gap:10px;margin-top:22px;flex-wrap:wrap}
.hidden{display:none !important}
.score-big{text-align:center;margin-bottom:18px}
.sun-score{width:140px;height:140px;margin:0 auto 12px;border-radius:50%;background:conic-gradient(var(--sun) calc(var(--pct,0)*1%),#e8f2f1 0);display:grid;place-items:center;position:relative}
.sun-score::before{content:"";position:absolute;inset:12px;border-radius:50%;background:#fff}
.sun-score strong{position:relative;z-index:1;font-size:2.6rem;color:var(--teal-deep)}
.topics{display:grid;gap:10px;margin:18px 0}
.topic{padding:14px 16px;border-radius:14px;background:var(--sun-soft);border:1px solid #f0d48a;font-size:.95rem}
.topic strong{display:block;color:var(--sun-deep);margin-bottom:2px}
.offer{background:linear-gradient(160deg,#0a5a54,#0F766E 60%,#14958c);color:#fff;border-radius:var(--radius);padding:24px;margin-top:8px}
.offer h3{font-size:1.4rem;margin:0 0 8px}
.offer p{margin:0 0 14px;opacity:.95}
.offer a.btn-sun{display:inline-flex}
.fine{font-size:.88rem;color:var(--muted);text-align:center;margin:16px auto 0;max-width:520px}
.footer{padding:24px 0 40px;font-size:.84rem;color:var(--muted);text-align:center}
.footer a{color:var(--teal);font-weight:700;text-decoration:none}
@media(max-width:560px){
  .klasse-grid{grid-template-columns:repeat(3,1fr)}
  .q{font-size:1.15rem}
  .card{padding:22px 16px}
}