:root{--bg:#fbf8f3;--paper:#fffdf9;--ink:#223127;--muted:#5f6f63;--brand:#1f6b55;--brand-2:#dcae63;--soft:#edf6f0;--line:#d9e4db;--danger:#7c2d12;--shadow:0 18px 45px rgba(27,61,45,.13);--radius:22px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--ink);line-height:1.65}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;height:auto}.container{width:min(1120px,92vw);margin-inline:auto}.skip-link{position:absolute;left:-999px;top:1rem;background:#fff;padding:.7rem 1rem;border-radius:999px;z-index:99}.skip-link:focus{left:1rem}.site-header{position:sticky;top:0;z-index:10;background:rgba(251,248,243,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.8rem 0}.brand{display:flex;align-items:center;gap:.55rem;font-weight:800;color:var(--ink);font-size:1.15rem}.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--brand);color:#fff}.site-nav{display:flex;flex-wrap:wrap;gap:.2rem}.site-nav a{padding:.55rem .7rem;border-radius:999px;color:var(--ink);font-size:.95rem}.site-nav a:hover{background:var(--soft);text-decoration:none}.nav-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:999px;padding:.55rem .9rem;color:var(--ink)}.hero{padding:4rem 0 2.2rem;background:linear-gradient(135deg,#fbf8f3 0%,#e9f6ef 100%)}.hero-grid{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(300px,.85fr);gap:2.5rem;align-items:center}.kicker{text-transform:uppercase;letter-spacing:.14em;color:var(--brand);font-weight:800;font-size:.82rem}.hero h1{font-size:clamp(2.35rem,6vw,4.8rem);line-height:1.04;margin:.35rem 0 1rem}.lead{font-size:1.18rem;color:var(--muted);max-width:64ch}.hero-actions,.actions{display:flex;gap:.85rem;flex-wrap:wrap;margin-top:1.4rem}.button{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:.82rem 1.15rem;background:var(--brand);color:#fff;font-weight:800;border:1px solid var(--brand);box-shadow:0 8px 22px rgba(31,107,85,.18)}.button:hover{text-decoration:none;transform:translateY(-1px)}.button-soft{background:#fff;color:var(--brand);border-color:var(--line);box-shadow:none}.button-warm{background:var(--brand-2);border-color:var(--brand-2);color:#2a2012}.hero-photo{margin:0;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:#ddd;min-height:360px}.hero-photo img{display:block;width:100%;height:100%;min-height:360px;object-fit:cover}.section{padding:3rem 0}.section h2{font-size:clamp(1.7rem,3vw,2.55rem);line-height:1.1;margin:0 0 1rem}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:2rem;align-items:start}.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;margin-top:1.5rem}.card{display:block;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:1.2rem;box-shadow:0 10px 24px rgba(34,49,39,.05);color:var(--ink);min-height:190px}.card:hover{text-decoration:none;transform:translateY(-2px);box-shadow:var(--shadow)}.card-icon{display:inline-grid;place-items:center;width:42px;height:42px;border-radius:14px;background:var(--soft);color:var(--brand);font-weight:900}.card h3{margin:.8rem 0 .35rem}.card p{color:var(--muted);margin:0}.panel{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:1.4rem;box-shadow:0 10px 24px rgba(34,49,39,.05)}.article{max-width:840px;margin-inline:auto;padding:3rem 0}.article h1{font-size:clamp(2.1rem,4.5vw,3.5rem);line-height:1.08}.article h2{margin-top:2.2rem}.article p,.article li{font-size:1.06rem}.safety-note{background:#fff7ed;border:1px solid #fed7aa;color:var(--danger);border-radius:18px;padding:1rem 1.1rem;margin:1.5rem 0}.references{background:var(--soft);border-radius:var(--radius);padding:1.2rem;margin-top:2rem}.references li{margin:.5rem 0}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.field{display:flex;flex-direction:column;gap:.35rem}.field-full{grid-column:1/-1}label{font-weight:800}input,select,textarea{width:100%;border:1px solid var(--line);border-radius:14px;padding:.85rem 1rem;font:inherit;background:#fff;color:var(--ink)}textarea{min-height:150px;resize:vertical}.help{font-size:.92rem;color:var(--muted)}.notice{padding:1rem 1.1rem;border-radius:16px;margin:1rem 0}.notice-success{background:#ecfdf5;border:1px solid #bbf7d0}.notice-error{background:#fff1f2;border:1px solid #fecdd3}.tool-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.4rem}.timer-display{font-size:4rem;font-weight:900;text-align:center;margin:1rem 0;color:var(--brand)}.breath-circle{width:190px;height:190px;border-radius:50%;margin:1rem auto;background:radial-gradient(circle at 40% 35%,#fff,#b9e5d1);display:grid;place-items:center;font-weight:900;color:var(--brand);transition:transform 4s ease}.breath-circle.expand{transform:scale(1.22)}.site-footer{background:#183128;color:#f7fff9;margin-top:3rem;padding:3rem 0}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:2rem}.site-footer a{display:block;color:#f7fff9;margin:.35rem 0}.small{font-size:.92rem;color:#d5eadf}.pill-list{display:flex;gap:.5rem;flex-wrap:wrap}.pill{border:1px solid var(--line);background:#fff;border-radius:999px;padding:.4rem .7rem;color:var(--muted);font-size:.9rem}.table-wrap{overflow-x:auto}.sitemap-list{columns:2;column-gap:3rem}.muted{color:var(--muted)}@media (max-width:860px){.nav-toggle{display:inline-flex}.site-nav{display:none;position:absolute;left:4vw;right:4vw;top:64px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:.75rem;box-shadow:var(--shadow)}.site-nav.open{display:grid}.hero-grid,.two-col,.footer-grid{grid-template-columns:1fr}.card-grid{grid-template-columns:1fr 1fr}.form-grid{grid-template-columns:1fr}.field-full{grid-column:auto}}@media (max-width:560px){.card-grid{grid-template-columns:1fr}.hero{padding-top:2.5rem}.timer-display{font-size:2.8rem}.sitemap-list{columns:1}}

/* AI teacher choice/chat refinements */
.choice-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;margin-top:1.5rem}.choice-card{display:flex;flex-direction:column;gap:.65rem;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:1.4rem;color:var(--ink);box-shadow:0 10px 24px rgba(34,49,39,.05)}.choice-card:hover{text-decoration:none;transform:translateY(-2px);box-shadow:var(--shadow)}.choice-card h2{margin:.2rem 0}.chat-page{max-width:900px}.chat-panel{padding:1rem}.chat-log{height:min(58vh,520px);overflow:auto;background:#fff;border:1px solid var(--line);border-radius:18px;padding:1rem;margin-bottom:1rem}.chat-bubble{max-width:88%;padding:.85rem 1rem;border-radius:18px;margin:.55rem 0;white-space:pre-wrap}.chat-bubble.assistant{background:var(--soft);border:1px solid var(--line);color:var(--ink)}.chat-bubble.user{background:var(--brand);color:#fff;margin-left:auto}.chat-form textarea{min-height:96px}.chat-actions{display:flex;gap:.65rem;flex-wrap:wrap;margin-top:.75rem}.voice-status{background:#fff7ed;border:1px solid #fed7aa;color:#7c2d12;border-radius:16px;padding:.7rem .9rem;margin-bottom:1rem;font-weight:700}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.soft-panel{background:#fbfff9}@media (max-width:720px){.choice-grid{grid-template-columns:1fr}.chat-bubble{max-width:100%}}