:root{--bg:#0b1020;--panel:#121a30;--panel2:#18233d;--text:#f4f7fb;--muted:#aab5ca;--accent:#7dd3fc;--good:#86efac;--warn:#fde68a;--bad:#fca5a5;--line:#27334f}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif;background:radial-gradient(circle at top,#15203d,#080c17 45%);color:var(--text);min-height:100vh}.shell{width:min(1280px,calc(100% - 28px));margin:28px auto 80px}.card{background:rgba(18,26,48,.95);border:1px solid var(--line);border-radius:18px;padding:28px;box-shadow:0 24px 70px rgba(0,0,0,.28)}.hero{text-align:center;padding:48px 28px;max-width:980px;margin:auto}.hero h1,.card h1{font-size:clamp(2.2rem,6vw,4.5rem);margin:.3em 0 .18em}.hero p{max-width:720px;margin:0 auto 30px;color:var(--muted);font-size:1.08rem;line-height:1.65}.badge{display:inline-block;padding:7px 11px;border:1px solid #35506f;border-radius:999px;color:var(--accent);font-size:.85rem}.mode-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;max-width:700px;margin:28px auto}.mode,button{appearance:none;border:0;border-radius:12px;padding:15px 18px;font:inherit;font-weight:700;cursor:pointer;background:var(--accent);color:#06111d}.mode{background:var(--panel2);color:var(--text);border:1px solid var(--line);display:flex;flex-direction:column;gap:7px;align-items:flex-start;text-align:left}.mode:hover{border-color:var(--accent)}.mode span{color:var(--muted);font-weight:500}.info{margin:24px auto 0;max-width:720px;text-align:left;color:var(--muted)}.hidden{display:none!important}.topbar{display:flex;align-items:center;justify-content:space-between;gap:22px;margin-bottom:0}.topbar h2{margin:8px 0 0;font-size:1.25rem}.progress-wrap{min-width:260px}.progress-wrap>span{font-size:.9rem;color:var(--muted)}.progress{height:9px;background:#0d1425;border-radius:999px;margin-top:8px;overflow:hidden}.progress i{display:block;height:100%;background:var(--accent);width:0}.question-card{padding:30px;background:linear-gradient(180deg,rgba(18,26,48,.98),rgba(13,21,37,.98))}.question-meta{display:flex;gap:10px;color:var(--muted);font-size:.9rem}.question-card h3{font-size:clamp(1.35rem,3vw,2rem);line-height:1.35;margin:18px 0}.scenario{white-space:pre-wrap;background:#0d1425;border:1px solid var(--line);border-radius:14px;padding:18px;line-height:1.6;color:#dbe7f5;margin-bottom:18px}.answers{display:grid;gap:11px}.answer{display:flex;align-items:flex-start;gap:12px;background:#11192c;border:1px solid var(--line);padding:14px 16px;border-radius:12px;cursor:pointer}.answer:hover{border-color:#44648a}.answer input{margin-top:4px}.free{display:grid;gap:8px}.free span{color:var(--muted)}textarea{width:100%;resize:vertical;background:#0d1425;color:var(--text);border:1px solid var(--line);border-radius:14px;padding:14px;font:inherit}.actions{display:flex;justify-content:space-between;gap:12px;margin-top:28px}.secondary{background:#202b45;color:var(--text)}.scores{display:grid;gap:14px;margin:26px 0}.score-row{display:grid;grid-template-columns:190px 1fr 58px;gap:12px;align-items:center}.meter{height:12px;background:#0d1425;border-radius:999px;overflow:hidden}.meter i{display:block;height:100%;background:linear-gradient(90deg,var(--bad),var(--warn),var(--good))}.redflags{margin-top:24px}.flag{border-left:4px solid var(--bad);background:#22151c;padding:14px 16px;border-radius:10px;margin:10px 0}.educator{margin-top:18px}.educator p{color:var(--muted);line-height:1.65}.role-switch{display:inline-flex;gap:6px;background:#0d1425;border:1px solid var(--line);padding:5px;border-radius:14px;margin-top:22px}.role{background:transparent;color:var(--muted);padding:10px 14px}.role.active{background:var(--panel2);color:var(--text)}.educator-start{max-width:740px;margin:20px auto 0}.educator-start>p{color:var(--muted)}
.visual-stage{margin:0 0 22px}.shot{max-width:720px;margin:0 auto;background:#0a1222;border:1px solid #31415f;border-radius:18px;overflow:hidden}.shot-head,.support-brand,.post-user{display:flex;align-items:center;gap:11px;padding:13px 15px;background:#151f33;border-bottom:1px solid #2b3955}.avatar,.profile-avatar,.shield{display:grid;place-items:center;width:36px;height:36px;border-radius:50%;background:#2a4d78;font-weight:800}.chat-body{padding:16px;display:flex;flex-direction:column;gap:10px;background:linear-gradient(180deg,#0d1627,#0a1220)}.msg{max-width:78%;display:grid;gap:3px}.msg span{padding:10px 12px;border-radius:13px;background:#202d43;line-height:1.38}.msg small{font-size:.72rem;color:#9cacc3}.msg.me{align-self:flex-end}.msg.me span{background:#155e75}.profile-shot{padding:17px;background:#f8fafc;color:#111827}.profile-top{display:flex;align-items:center;gap:12px}.profile-avatar{width:58px;height:58px;background:#dbeafe;color:#1e3a8a}.profile-stats{font-size:.82rem;color:#64748b}.profile-bio{white-space:pre-wrap;font:inherit;color:#334155}.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:7px}.post-card{padding:10px;background:#e2e8f0;border-radius:10px}.combo-wrap{display:grid;grid-template-columns:1fr 1fr;gap:14px}.branch-stage{margin-top:6px}.branch-chat{border:1px solid #31415f;border-radius:18px;overflow:hidden;background:#0a1222}.branch-chat-head{display:flex;gap:10px;align-items:center;padding:13px 15px;background:#151f33}.branch-choices{display:grid;gap:10px}.branch-choices button{text-align:left;background:#18233d;color:var(--text);border:1px solid #33415e}.branch-feedback{margin-top:14px;padding:15px;border-radius:14px;background:#102a2b;border:1px solid #24575b}.branch-continue{display:block;margin-top:12px;margin-left:auto}.educator-tools{display:flex;gap:12px;flex-wrap:wrap}.edu-summary{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.edu-stat,.edu-note,.edu-item{background:#0d1425;border:1px solid var(--line);border-radius:14px;padding:16px}.real-shot,.hotspot-wrap{max-width:720px;margin:0 auto 20px}.real-shot img,.hotspot-wrap>img{display:block;width:100%;border-radius:16px}.hotspot-free-wrap{position:relative;max-width:720px;margin:auto}.hotspot-free-layer{position:absolute;inset:0;cursor:crosshair}.free-mark{position:absolute;transform:translate(-50%,-50%);width:28px;height:28px;border-radius:50%;background:#0284c7;color:#fff;display:grid;place-items:center}.people-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.person-card{background:#0d1425;border:1px solid var(--line);border-radius:14px;overflow:hidden}.person-card img{display:block;width:100%;aspect-ratio:1;object-fit:cover}.person-controls{padding:12px}.answer-review{border:1px solid var(--line);border-radius:12px;margin:9px 0}.answer-review summary{padding:14px;cursor:pointer}.answer-review-body{padding:0 14px 16px}.review-shot-wrap{position:relative;max-width:720px}.review-shot-wrap img{width:100%}.review-expected-box{position:absolute;border:4px solid #22c55e;background:rgba(34,197,94,.15);box-shadow:0 0 0 2px #07110a,0 0 12px rgba(34,197,94,.85)}.review-user-mark{position:absolute;transform:translate(-50%,-50%);background:#0284c7;color:#fff;border-radius:50%;width:28px;height:28px;display:grid;place-items:center}.model-solution{margin-top:12px;padding:14px;border:1px solid #31556d;border-radius:12px;background:#0d1c2b}.concept-quiz{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:18px;align-items:start}.concept-quiz>.topbar{grid-column:1/-1}.concept-quiz>.question-card{grid-column:1}.guidance-panel{grid-column:2;grid-row:2;position:sticky;top:18px;padding:22px;background:linear-gradient(180deg,rgba(18,29,48,.98),rgba(13,21,37,.98))}.guidance-panel h3{margin:14px 0 8px;font-size:1.18rem}.guidance-why,.guidance-more p,.guidance-note{color:var(--muted);line-height:1.55}.guidance-rules{display:grid;gap:9px;margin:18px 0}.guidance-rule{display:grid;grid-template-columns:24px 1fr;gap:8px;align-items:start;padding:10px;border:1px solid var(--line);border-radius:12px;background:#0d1425}.guidance-rule span{display:grid;place-items:center;width:22px;height:22px;border-radius:7px;background:rgba(125,211,252,.12);color:var(--accent);font-weight:900}.guidance-rule p{margin:1px 0 0;font-size:.9rem;line-height:1.4}.guidance-more{border-top:1px solid var(--line);padding-top:14px}.guidance-more summary{cursor:pointer;font-weight:800}.guidance-note{font-size:.78rem;margin:14px 0 0}
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