:root{--ground:#FFFFFF;--surface:#F7F8F5;--ink:#1C1B18;--ink-muted:#5C5B54;--ink-faint:#9A988E;--hairline:#E8E7E2;--primary:#1A5440;--primary-bright:#237A57;--primary-surface:#EAF2E8;--primary-ink:#103327;--accent:#C0852B;--accent-soft:#F0E6CC;--radius:14px;--maxw:1120px;--font-display:"Plus Jakarta Sans", system-ui, sans-serif;--font-body:"Inter", system-ui, sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--ground);color:var(--ink);font-family:var(--font-body);line-height:1.6;-webkit-font-smoothing:antialiased}.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}.disp{font-family:var(--font-display)}a{color:var(--primary-bright);text-decoration:none}a:focus-visible{outline:2px solid var(--primary-bright);outline-offset:3px;border-radius:3px}header{position:sticky;top:0;z-index:20;background:#ffffffd1;backdrop-filter:saturate(1.05) blur(10px);-webkit-backdrop-filter:saturate(1.05) blur(10px);border-bottom:1px solid var(--hairline)}.bar{display:flex;align-items:center;justify-content:space-between;height:64px}.brand{display:flex;align-items:center;gap:11px}.brand .name{font-family:var(--font-display);font-weight:600;font-size:22px;letter-spacing:-.01em;color:var(--ink)}.nav{display:flex;align-items:center;gap:28px}.nav-link{color:var(--ink-muted);font-size:15px}.nav-link:hover{color:var(--ink);text-decoration:none}.nav-signin{color:var(--primary);font-weight:500;font-size:15px}.nav-signin:hover{color:var(--primary-ink);text-decoration:none}.hero{padding:56px 28px 8px;text-align:center}.eyebrow{display:flex;align-items:center;justify-content:center;gap:9px;font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);font-weight:500;margin:0}.hero h1{font-family:var(--font-display);font-weight:600;letter-spacing:-.02em;font-size:clamp(36px,5.4vw,62px);line-height:1.02;margin:18px auto 0;max-width:15ch}.hero h1 .em{color:var(--primary)}.lede{font-size:19px;color:var(--ink-muted);max-width:58ch;margin:18px auto 0}.lede b{color:var(--ink);font-weight:500}.demo-entry{display:inline-flex;align-items:center;gap:11px;font-weight:500;color:var(--ink);font-size:15.5px;padding:7px 9px 7px 7px;border-radius:999px;border:1px solid var(--hairline);background:#fff;white-space:nowrap;margin-top:26px}.demo-entry:hover{border-color:var(--primary);background:var(--surface);text-decoration:none}.demo-entry .play{width:32px;height:32px;border-radius:50%;background:var(--primary-surface);color:var(--primary);display:inline-flex;align-items:center;justify-content:center;font-size:11px}.demo-entry .muted{color:var(--ink-faint);font-weight:400;font-size:13.5px}.rule{display:block;width:100%;height:auto}.kmark{display:inline-block;flex:none}.doors{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:30px 0 8px;text-align:left}.door{background:var(--ground);border:1px solid var(--hairline);border-radius:var(--radius);padding:22px;display:flex;flex-direction:column;transition:border-color .18s ease,transform .18s ease}.door:hover{border-color:var(--primary);transform:translateY(-3px)}.door.feature{background:var(--primary-surface);border-color:var(--primary)}.door .tag{font-size:12px;font-weight:600;letter-spacing:.05em;color:var(--primary);text-transform:uppercase}.door.feature .tag{color:var(--accent);display:flex;align-items:center;gap:7px}.door h3{font-family:var(--font-display);font-weight:600;font-size:20px;margin:8px 0 0;line-height:1.15}.door.feature h3{color:var(--primary-ink)}.door p{color:var(--ink-muted);font-size:14.5px;margin:9px 0 0;flex:1}.door.feature p{color:var(--primary-ink)}.door .act{margin-top:16px}.door-link{font-weight:500;font-size:14.5px;color:var(--primary)}.door-link:hover{text-decoration:underline}.door-link .arrow{color:var(--accent)}.cta-teacher{display:inline-flex;align-items:center;gap:8px;font-weight:500;font-size:14.5px;color:#fff;background:var(--primary);padding:9px 16px;border-radius:10px}.cta-teacher:hover{background:var(--primary-bright);text-decoration:none}.cta-teacher:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.cta-teacher .arrow{color:var(--accent-soft)}.band{background:var(--surface);border-top:1px solid var(--hairline);border-bottom:1px solid var(--hairline);padding:66px 0}.kicker{display:flex;align-items:center;justify-content:center;gap:9px;font-family:var(--font-display);font-weight:600;font-size:12.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin:0}.h2{font-family:var(--font-display);font-weight:600;font-size:clamp(27px,3.6vw,40px);letter-spacing:-.015em;line-height:1.07;margin:11px 0 0}.sec-intro{max-width:62ch;color:var(--ink-muted);font-size:17.5px;margin:14px auto 0}.demo{position:relative;margin-top:36px;border:1px solid var(--hairline);border-radius:var(--radius);overflow:hidden;background:#fff;text-align:left}.demo .grid{display:grid;grid-template-columns:1fr 1fr}.demo .pane{padding:28px 26px;min-height:236px}.demo .teacher{background:var(--primary-surface);border-left:1px dashed #bcd0b3}.demo .label{font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-faint)}.demo .teacher .label{color:var(--primary)}.demo h4{font-family:var(--font-display);font-weight:600;font-size:19px;margin:8px 0 14px}.demo .teacher h4{color:var(--primary-ink)}.bubble{background:var(--surface);border:1px solid var(--hairline);border-radius:10px;padding:11px 13px;font-size:14px;color:var(--ink-muted);margin-bottom:9px}.demo .teacher .bubble{background:#fff;border-color:#cfe0c8}.chip{display:inline-block;background:var(--accent-soft);color:#6b4a12;border-radius:4px;padding:0 5px}.flow{display:flex;align-items:center;gap:8px;color:var(--ink-faint);font-size:12.5px;margin-top:15px}.mountpill{display:inline-flex;align-items:center;gap:7px;border:1px dashed var(--ink-faint);border-radius:999px;padding:7px 15px;font-size:13px;color:var(--ink-faint)}.flipknob{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:46px;height:46px;border-radius:50%;background:#fff;border:1px solid var(--hairline);display:flex;align-items:center;justify-content:center;box-shadow:0 1px #1c1b180a}.caption{margin-top:18px;font-size:13px;color:var(--ink-faint)}.vals{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin-top:42px}.val h3{font-family:var(--font-display);font-weight:600;font-size:19px;margin:14px 0 0}.val p{color:var(--ink-muted);font-size:15px;margin:9px 0 0}.val .em{color:var(--primary);font-weight:500}.quote{padding:24px 28px 84px;text-align:center}.quote blockquote{font-family:var(--font-display);font-weight:500;font-size:clamp(23px,3vw,32px);line-height:1.32;letter-spacing:-.01em;max-width:26ch;margin:0 auto;color:var(--ink)}.quote .src{color:var(--ink-faint);font-size:15px;margin-top:22px}footer{background:var(--ink);color:#cfc7b6;padding:52px 0 40px}.frow{display:flex;justify-content:space-between;align-items:flex-start;gap:30px;flex-wrap:wrap}footer .name{font-family:var(--font-display);color:#fff;font-weight:600;font-size:21px}.prov{display:flex;align-items:center;gap:9px;margin-top:10px;color:#a89e8a;font-size:14px}.prov .star{color:var(--accent)}footer nav{display:flex;gap:24px}footer nav a{color:#cfc7b6;font-size:14px}footer nav a:hover{color:#fff;text-decoration:none}.legal{margin:28px auto 0;padding-top:16px;border-top:1px solid #3a342a;color:#8b8270;font-size:12.5px}@keyframes evGlow{0%,to{background:var(--accent-soft);border-color:#e3d2a6}50%{background:#f7f5ef;border-color:#eee8da}}@keyframes flipDrift{0%,to{transform:translate(-7px)}50%{transform:translate(7px)}}.ev{animation:evGlow 5s ease-in-out infinite}.ev:nth-of-type(2){animation-delay:.6s}.ev:nth-of-type(3){animation-delay:1.2s}.flipknob .spin{display:inline-flex;animation:flipDrift 3.4s ease-in-out infinite}@media (prefers-reduced-motion: reduce){*{animation:none!important}}@media (max-width:860px){.doors,.vals,.demo .grid{grid-template-columns:1fr}.demo .teacher{border-left:0;border-top:1px dashed #bcd0b3}.nav .hide{display:none}}