:root{--bg:#f4efe5;--card:#fffdf8;--line:#e3d9cb;--ink:#27231d;--muted:#756f66;--accent:#2f745e}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px -apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}button,input,select{font:inherit}button{cursor:pointer;border:0;border-radius:10px;padding:10px 12px}header{position:sticky;top:0;z-index:5;display:grid;grid-template-columns:auto 1fr auto auto;gap:8px;align-items:center;padding:12px 16px;background:#fffdf8eF;backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}main{max-width:1300px;margin:auto;padding:18px 18px 88px}nav{position:fixed;bottom:0;left:0;right:0;display:grid;grid-template-columns:repeat(5,1fr);background:#fffdf8ee;backdrop-filter:blur(15px);border-top:1px solid var(--line);padding:6px 8px calc(6px + env(safe-area-inset-bottom))}nav button{background:transparent;color:var(--muted);display:grid;gap:2px;place-items:center}nav button.active{color:var(--accent)}nav small{font-size:11px}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.card{background:var(--card);border:1px solid var(--line);border-radius:17px;padding:16px;box-shadow:0 10px 24px #4c3f2b12}.hero{display:grid;grid-template-columns:1.2fr .8fr;gap:14px}.hero .card:first-child{min-height:240px;background:linear-gradient(135deg,#fffdf8,#e6f1ec);display:flex;flex-direction:column;justify-content:space-between}.meta{color:var(--muted);font-size:13px}.reader{display:grid;grid-template-columns:270px 1fr;gap:14px;height:calc(100dvh - 175px)}.roadmap{overflow:auto}.roadmap button{display:block;width:100%;text-align:left;background:transparent;border-bottom:1px solid var(--line)}.roadmap button.active{background:#e6f1ec;color:var(--accent)}.readerCard{display:grid;grid-template-rows:auto 1fr auto;min-height:0}.readerContent{overflow:auto;padding:18px;scroll-behavior:smooth}.para{padding:14px;border-radius:12px;margin-bottom:18px}.para.active{background:#fff5e7;border-left:3px solid #a77c33}.tib{font-family:'Noto Serif Tibetan','Microsoft Himalaya',serif;font-size:1.3rem;line-height:1.9}.pho{color:var(--accent);font-weight:600}.eng,.vie{line-height:1.65;margin-top:7px}.toolbar,.controls{display:flex;gap:8px;align-items:center;justify-content:space-between;flex-wrap:wrap}.controls{justify-content:center}.round{width:48px;height:48px;border-radius:50%;background:white;border:1px solid var(--line)}dialog{border:0;border-radius:18px;width:min(92vw,800px);padding:20px}.builder{display:grid;grid-template-columns:1fr 1fr;gap:14px}.row{display:flex;justify-content:space-between;align-items:center;border:1px solid var(--line);border-radius:10px;padding:10px;margin:7px 0}dialog input{width:100%;padding:11px;border:1px solid var(--line);border-radius:10px;margin-bottom:10px}@media(max-width:800px){.grid{grid-template-columns:1fr 1fr}.hero{grid-template-columns:1fr}.reader{display:block;height:auto}.roadmap{display:none}.readerCard{min-height:calc(100dvh - 180px)}.readerContent{max-height:calc(100dvh - 310px)}}@media(max-width:560px){.grid{grid-template-columns:1fr}.builder{grid-template-columns:1fr}header b{font-size:14px}}