@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color 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components;@layer utilities{.visible{visibility:visible}.start{inset-inline-start:var(--spacing)}.uppercase{text-transform:uppercase}}:root{--ink:#171a22;--muted:#6a6c72;--paper:#f5f1e8;--cream:#fffdf8;--line:#d7d0c1;--coral:#ef6b4a;--blue:#4461f2;--green:#18a27b}*{box-sizing:border-box}html{scroll-behavior:smooth}body{color:var(--ink);background:radial-gradient(circle at 82% 8%, #4461f217, transparent 23rem), linear-gradient(90deg, #171a2206 1px, transparent 1px), linear-gradient(#171a2206 1px, transparent 1px), var(--paper);background-size:auto,24px 24px,24px 24px,auto;margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,input{font:inherit}a{color:inherit;text-decoration:none}.site-shell{min-height:100vh;overflow:hidden}.topbar{border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#f5f1e8db;justify-content:space-between;align-items:center;min-height:72px;padding:0 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var(--line);background:var(--cream);border-radius:18px;place-items:center;width:fit-content;margin:24px auto 18px;padding:13px;display:grid}.qr-loading{background:#ece7dc;border-radius:8px;width:142px;height:142px;animation:1.5s infinite alternate shimmer}@keyframes shimmer{to{opacity:.45}}.privacy-note{border-top:1px dashed var(--line);color:var(--muted);text-align:center;margin:0;padding-top:16px;font-size:11px}.privacy-note span{color:var(--green)}.survey-card{scroll-margin-top:16px}.survey-card .section-heading{margin-bottom:25px}fieldset{border:0;margin:0 0 22px;padding:0}legend,.field>span{margin-bottom:10px;font-size:13px;font-weight:800;display:block}.gender-options{grid-template-columns:1fr 1fr;gap:8px;display:grid}.choice{position:relative}.choice input{opacity:0;pointer-events:none;position:absolute}.choice span{border:1px solid var(--line);min-height:42px;color:var(--muted);cursor:pointer;background:#faf7f0;border-radius:11px;place-items:center;padding:8px;transition:all 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var(--ink);align-items:stretch;gap:clamp(3px,1vw,10px);height:210px;padding-top:24px;display:flex}.histogram-column{flex:1 1 0;grid-template-rows:18px 1fr 27px;place-items:end stretch;min-width:0;display:grid}.histogram-count{color:var(--muted);text-align:center;align-self:start;font:700 10px Georgia,serif}.histogram-bar{border:1px solid var(--ink);background:var(--coral);border-bottom:0;border-radius:5px 5px 0 0;align-self:end;width:100%;min-height:8px;transition:height .6s cubic-bezier(.2,.8,.2,1);box-shadow:inset 0 -18px 24px #bf3d201f}.histogram-column:nth-child(3n+2) .histogram-bar{box-shadow:none;background:#f4c64e}.histogram-column:nth-child(3n) 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var(--line);color:var(--muted);letter-spacing:.06em;justify-content:space-between;gap:20px;padding:24px clamp(20px,4vw,64px);font-size:10px;display:flex}.teacher-link{color:var(--ink);font-weight:900}.teacher-link:hover{color:var(--blue)}.admin-shell{min-height:100vh}.admin-main{grid-template-columns:minmax(0,1.05fr) minmax(330px,.95fr);align-items:center;gap:clamp(24px,5vw,74px);width:min(1120px,100% - 40px);min-height:calc(100vh - 73px);margin:0 auto;padding:64px 0;display:grid}.admin-intro .eyebrow{margin-bottom:18px}.admin-intro h1{letter-spacing:-.055em;max-width:650px;margin:0;font-family:Georgia,Times New Roman,serif;font-size:clamp(46px,6vw,78px);line-height:.98}.admin-intro h1 em{color:var(--coral);font-style:normal}.admin-intro>p:not(.eyebrow){max-width:620px;color:var(--muted);margin:26px 0 0;font-size:16px;line-height:1.8}.admin-points{grid-template-columns:repeat(3,1fr);gap:10px;margin-top:34px;display:grid}.admin-point{border:1px solid var(--line);background:#fffdf8bd;border-radius:14px;padding:16px}.admin-point b{margin-bottom:5px;font:800 14px Georgia,serif;display:block}.admin-point span{color:var(--muted);font-size:10px;line-height:1.5}.admin-card{border:1px solid var(--ink);background:var(--cream);box-shadow:11px 11px 0 var(--ink);border-radius:26px 26px 70px;padding:clamp(24px,4vw,38px)}.admin-card .section-heading{margin-bottom:28px}.admin-card .field{margin:0}.admin-actions{gap:10px;margin-top:22px;display:flex}.admin-actions .submit-button{margin:0}.admin-actions .secondary-button{border:1px solid var(--line);color:var(--muted);cursor:pointer;background:#faf7f0;border-radius:12px;flex:none;padding:0 16px;font-weight:800}.admin-actions .secondary-button:hover{border-color:var(--ink);color:var(--ink)}.admin-security{border-top:1px dashed var(--line);color:var(--muted);margin:24px 0 0;padding-top:20px;font-size:11px;line-height:1.7}.admin-security b{color:var(--green)}.danger-zone{background:#fff4ef;border:1px solid #a3311d59;border-radius:16px;gap:18px;margin-top:26px;padding:22px;display:grid}.danger-kicker{color:#a3311d;letter-spacing:.14em;font-size:9px;font-weight:900}.danger-zone h3{margin:5px 0 7px;font:800 21px Georgia,serif}.danger-zone p{color:#795e56;margin:0;font-size:11px;line-height:1.7}.danger-outline-button,.danger-button{cursor:pointer;border:1px solid #a3311d;border-radius:11px;min-height:44px;padding:0 15px;font-weight:900}.danger-outline-button{color:#a3311d;background:0 0}.danger-outline-button:hover{color:#fff;background:#a3311d}.clear-confirmation{border-top:1px dashed #a3311d47;padding-top:18px}.clear-confirmation .field span b{color:#a3311d}.clear-confirmation .field input{background:#fff}.danger-actions{gap:9px;margin-top:14px;display:flex}.danger-button{color:#fff;background:#a3311d;flex:auto}.danger-button:hover:not(:disabled){background:#7f2515}.danger-button:disabled{cursor:not-allowed;opacity:.45}.danger-actions .secondary-button{border:1px solid var(--line);color:var(--muted);cursor:pointer;background:#fff;border-radius:11px;padding:0 14px;font-weight:800}@media (max-width:980px){.hero{grid-template-columns:1fr}.sample-card{display:none}.workspace{grid-template-columns:1fr}.input-column{grid-template-columns:.75fr 1.25fr;align-items:start;display:grid}.admin-main{grid-template-columns:1fr;align-items:start}}@media (max-width:700px){.topbar{min-height:62px}.class-label{display:none}.hero{gap:24px;padding-top:42px;padding-bottom:30px}.hero h1{font-size:clamp(43px,13vw,66px)}.hero-copy{margin-top:20px;font-size:14px}.input-column{display:flex}.chart-grid{grid-template-columns:1fr}.height-card{grid-column:auto}.dashboard{border-radius:22px}.dashboard-header{align-items:flex-start}.chart-card{padding:18px}.histogram-bars{gap:3px;height:180px}.histogram-label{transform-origin:50%;font-size:7px;transform:rotate(-28deg)}.teaching-note{grid-template-columns:1fr}.admin-main{min-height:auto;padding:42px 0 58px}.admin-intro 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