:root{color-scheme:light;--ink:#19313a;--muted:#66777a;--paper:#f6f4ef;--card:#fffdfa;--teal:#247a85;--line:#e5e2d9;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper)}*{box-sizing:border-box}body{margin:0;min-height:100vh;padding:0 22px 30px}.top{max-width:1120px;margin:auto;height:76px;display:flex;align-items:center;justify-content:space-between}.brand{font-weight:850;letter-spacing:.16em;color:var(--ink);text-decoration:none;font-size:.86rem}.badge{border:1px solid var(--line);border-radius:999px;padding:8px 14px;font-size:.8rem;color:var(--muted)}main{max-width:1000px;margin:36px auto 56px}.card{background:var(--card);border:1px solid var(--line);border-radius:24px;padding:clamp(24px,5vw,56px);box-shadow:0 18px 45px #1c30300a}.hero{max-width:760px;margin:8vh auto;text-align:center}.eyebrow{font-size:.78rem;letter-spacing:.13em;font-weight:700;color:var(--teal);text-transform:uppercase}.hero h1,.teacher-card h1{font-size:clamp(2.5rem,7vw,5rem);line-height:1.03;letter-spacing:-.045em;margin:24px 0}.hero h1 em{font-family:Georgia,serif;font-weight:400;color:var(--teal)}.hero>p:not(.eyebrow){font-size:1.1rem;color:var(--muted);max-width:540px;margin:0 auto 30px;line-height:1.65}.actions,.toolbar{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap}.button,button{font:inherit}.button,button{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:12px;min-height:46px;padding:10px 17px;background:#fffdfa;color:var(--ink);text-decoration:none;cursor:pointer;font-weight:650}.button:hover,button:hover{border-color:#aabdb9}.button.primary,button.primary{background:var(--teal);border-color:var(--teal);color:white}.button.primary:hover,button.primary:hover{background:#1b6670}.join-form{max-width:430px;margin:38px auto 0;text-align:left;border-top:1px solid var(--line);padding-top:24px}.join-form label,.stack label{display:block;font-weight:650;margin-bottom:9px}.join-form>div{display:flex;gap:8px}.join-form input,.stack input{font:inherit;border:1px solid #c9cec8;border-radius:10px;padding:12px 14px;min-width:0}.join-form input{flex:1}.error{color:#9b3f3f}.teacher-card{max-width:660px;margin:9vh auto}.teacher-card h1{font-size:clamp(2.1rem,5vw,3.5rem)}.teacher-card>p:not(.eyebrow){color:var(--muted);line-height:1.6}.stack{display:grid;gap:10px;max-width:420px;margin-top:30px}.stack input{width:100%}.hidden{display:none!important}#session-root{display:block}.projection-wrap{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:20px;align-items:start}.projection-wrap .card{padding:clamp(24px,4vw,44px)}#session-root h1{font-size:clamp(2rem,5vw,3.8rem);letter-spacing:-.04em;line-height:1.1;margin:20px 0 16px}#session-root h1 small{display:block;font-size:.42em;letter-spacing:0;color:var(--muted);font-weight:550;margin-bottom:10px}.status,.muted{color:var(--muted)}.choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:26px 0}.choice{justify-content:flex-start;text-align:left;border-left:6px solid var(--choice);min-height:64px;gap:12px}.choice span{font-weight:800;color:var(--choice)}.choice[aria-pressed=true]{outline:2px solid var(--choice)}.choice:disabled{cursor:default;opacity:.86}.results{display:grid;gap:17px;margin:26px 0}.result>div:first-child{display:flex;justify-content:space-between;gap:10px;margin-bottom:7px}.track{height:10px;border-radius:8px;background:#ebe9e3;overflow:hidden}.track i{display:block;height:100%;border-radius:8px}.discussion{font-family:Georgia,serif;font-size:1.16rem;color:#456068;margin-top:28px}.saved{color:#32655c}.toolbar{margin:16px auto}.toolbar select{max-width:min(460px,80vw);min-height:44px;border:1px solid var(--line);border-radius:10px;padding:8px;background:white;font:inherit}.settings{margin:26px 0;padding:24px}.settings summary{font-weight:700;cursor:pointer}.invite{display:flex;gap:24px;align-items:center;flex-wrap:wrap;margin:20px 0}.invite img,.join img{max-width:100%;height:auto;background:white;padding:8px;border-radius:8px}.link{overflow-wrap:anywhere;color:var(--muted)}.roomcode{font-size:1.55rem;letter-spacing:.16em}.join{text-align:center;padding:24px!important}.join h2{margin:8px}.join>a{color:var(--teal)}hr{border:0;border-top:1px solid var(--line);margin:24px 0}.notice{color:#3d6a5d;min-height:1em}footer{max-width:1000px;margin:auto;text-align:center;color:var(--muted);font-size:.82rem;padding:16px}@media(max-width:760px){body{padding:0 14px 20px}.top{height:64px}.hero{margin:6vh auto}.card{border-radius:18px}.projection-wrap{grid-template-columns:1fr}.choices{grid-template-columns:1fr}.toolbar{justify-content:stretch}.toolbar>*{flex:1}.toolbar select{flex:2}.invite{justify-content:center;text-align:center}}
.history{margin-top:36px;border-top:1px solid var(--line);padding-top:20px}.history h2{font-size:1.2rem}.history-item{display:flex;justify-content:space-between;gap:12px;padding:14px 4px;border-bottom:1px solid var(--line);color:var(--ink);text-decoration:none}.history-item span{color:var(--muted)}.history-item:hover{color:var(--teal)}.save-row{display:flex;gap:10px;align-items:center;margin-top:8px}.save-row input{font:inherit;flex:1;min-width:0;border:1px solid #c9cec8;border-radius:10px;padding:12px 14px}.join .notice{line-height:1.5}.projection-wrap .join{position:sticky;top:18px}@media(max-width:760px){.save-row{align-items:stretch;flex-direction:column}.save-row>*{width:100%}.history-item{flex-direction:column;gap:4px}.projection-wrap .join{position:static}}