:root{--bg:#f4f6fb;--card:#fff;--ink:#1d2433;--mute:#6b7387;--line:#e6e9f2;--blue:#3d6df2;--green:#1fb36b;--red:#e5484d;--amber:#f5a524;--math:#3d6df2;--ela:#8b5cf6;--writing:#ec4899;--science:#10b981;--social-studies:#f59e0b;--r:18px}
*{box-sizing:border-box}body{margin:0;font-family:ui-rounded,"SF Pro Rounded","Nunito","Segoe UI",system-ui,sans-serif;background:var(--bg);color:var(--ink);font-size:17px;line-height:1.5}
.wrap{max-width:860px;margin:0 auto;padding:16px}.top{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:10px}.top h1{font-size:1.4em;margin:0;flex:1}
.pill{display:inline-flex;align-items:center;gap:6px;background:var(--card);border-radius:999px;padding:6px 14px;font-weight:700;box-shadow:0 1px 3px #0001}
.card{background:var(--card);border-radius:var(--r);padding:20px;margin:14px 0;box-shadow:0 2px 10px #1d24330d;border:1px solid var(--line)}
.btn{display:inline-block;border:0;border-radius:14px;padding:12px 20px;font:inherit;font-weight:800;color:#fff;background:var(--blue);cursor:pointer;box-shadow:0 4px 0 #0002;transition:transform .05s;text-decoration:none}.btn:active{transform:translateY(2px);box-shadow:0 2px 0 #0002}.btn.g{background:var(--green)}.btn.o{background:#eef1f7;color:var(--ink)}.btn.big{font-size:1.25em;padding:16px 28px}.btn:disabled{opacity:.45;cursor:default}
.hero{border-radius:24px;color:#fff;padding:24px;position:relative;overflow:hidden}.hero h2{margin:4px 0 6px;font-size:1.6em}.hero .lbl{opacity:.85;font-weight:700;text-transform:uppercase;font-size:.8em;letter-spacing:.06em}
.ring{width:150px;height:150px;flex:none}.heroRow{display:flex;gap:20px;align-items:center;flex-wrap:wrap}
.bar{height:12px;background:#e9edf5;border-radius:99px;overflow:hidden}.bar>div{height:100%;background:var(--green);border-radius:99px;transition:width .4s}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px}.subj{border-radius:var(--r);padding:16px;background:var(--card);border:1px solid var(--line);border-top:6px solid var(--c)}.subj h3{margin:0 0 4px}.muted{color:var(--mute);font-size:.88em}
.steps{display:flex;gap:6px;flex-wrap:wrap;margin:10px 0}.steps span{padding:5px 12px;border-radius:99px;background:#eef1f7;font-weight:700;font-size:.85em}.steps span.on{background:var(--c,var(--blue));color:#fff}
.key{background:#fff8e1;border-left:5px solid var(--amber);padding:10px 14px;border-radius:8px;font-weight:700}.passage{background:#fbfaff;border:1px solid var(--line);border-radius:12px;padding:12px 18px}
.tb{border-collapse:collapse;margin:8px 0}.tb td,.tb th{border:1px solid #c9cfdc;padding:5px 14px;text-align:center}.tb th{background:#eef2ff}
input.ans{font:inherit;font-size:1.25em;padding:10px 14px;border:2px solid var(--line);border-radius:12px;width:220px}input.ans:focus,textarea:focus{outline:none;border-color:var(--blue)}
textarea{width:100%;font:inherit;padding:12px;border:2px solid var(--line);border-radius:12px;min-height:100px}
.ch label{display:block;padding:12px 14px;margin:8px 0;background:#f4f6fb;border:2px solid var(--line);border-radius:12px;cursor:pointer;font-weight:600}.ch label:has(input:checked){border-color:var(--blue);background:#eef3ff}
.ok{color:var(--green);font-weight:800}.no{color:var(--red);font-weight:800}iframe{width:100%;aspect-ratio:16/9;border:0;border-radius:14px}
.modal{position:fixed;inset:0;background:#1d243388;display:flex;align-items:center;justify-content:center;padding:14px;z-index:9}.modal>.card{max-width:640px;width:100%;max-height:92vh;overflow:auto}
.chat p{padding:10px 12px;border-radius:12px;margin:6px 0;white-space:pre-wrap}.chat .me{background:#eef3ff}.chat .tu{background:#eafaf1}
.brk{text-align:center;padding:40px 20px;background:linear-gradient(135deg,#1fb36b,#3d6df2);color:#fff}.brk .big{font-size:4em;font-weight:900;font-variant-numeric:tabular-nums}
table.t{border-collapse:collapse;width:100%}table.t td,table.t th{border-bottom:1px solid var(--line);padding:8px 6px;text-align:left;font-size:.92em;vertical-align:top}.flag{color:var(--red);font-weight:800}
.viewer{background:#1d2433;color:#fff;text-align:center;padding:8px;font-weight:700;border-radius:12px}
@media(max-width:560px){.ring{width:110px;height:110px}.hero h2{font-size:1.3em}body{font-size:16px}}