:root{--bg:#FAF8F3;--surface:#FFFFFF;--sunk:#F2EEE6;--line:#E6DFD3;--ink:#2B2320;--muted:#8A8175;--accent:#6E1F28;--accent-ink:#FFFFFF;--accent-soft:#F3E6E7;--gold:#C6A86B;--gold-soft:#F6EFDF;--good:#2F6B4F;--good-soft:#E3F0E8;--warn:#9A6312;--bad:#A3322B;--bad-soft:#F7E4E2;--display:"Playfair Display", Georgia, "Times New Roman", serif;--body:"Be Vietnam Pro", "Segoe UI", system-ui, sans-serif;--r:14px;color-scheme:light}@media (prefers-color-scheme: dark){:root{--bg:#1B1514;--surface:#251D1C;--sunk:#2F2523;--line:#3E322F;--ink:#F3EDE4;--muted:#B5AA9C;--accent:#D98C95;--accent-ink:#1B1514;--accent-soft:#3A2427;--gold:#D9BE85;--gold-soft:#3A3122;--good:#7CC4A0;--good-soft:#1F3329;--warn:#E0B060;--bad:#F09A90;--bad-soft:#3A2220;color-scheme:dark}}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:15px;line-height:1.55;-webkit-font-smoothing:antialiased}button,input,textarea,select{font:inherit;color:inherit}button{cursor:pointer}a{color:var(--accent)}:focus-visible{outline:2px solid var(--gold);outline-offset:2px}h1,h2,h3{font-family:var(--display);font-weight:600;text-wrap:balance;margin:0;line-height:1.2}h1{font-size:clamp(1.5rem,4vw,2.1rem)}h2{font-size:1.3rem}h3{font-size:1.05rem}p{margin:0}.eyebrow{font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:600}.num{font-variant-numeric:tabular-nums}.muted{color:var(--muted)}.small{font-size:.84rem}.row{display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap}.row.start{justify-content:flex-start}.stack{display:flex;flex-direction:column;gap:8px}.shell{display:grid;grid-template-columns:240px minmax(0,1fr);min-height:100%}.side{position:sticky;top:0;height:100vh;border-right:1px solid var(--line);padding:22px 16px;display:flex;flex-direction:column;gap:18px}.brand{display:flex;gap:10px;align-items:center;text-decoration:none;color:inherit}.mark{width:38px;height:38px;border-radius:50%;background:#6e1f28;color:#faf8f3;display:grid;place-items:center;font-family:var(--display);font-style:italic;font-size:1.2rem;flex:none}.brand b{font-family:var(--display);font-size:1.02rem;display:block;line-height:1.15}.brand small{color:var(--muted);font-size:.72rem}.nav{display:flex;flex-direction:column;gap:2px}.nav a{display:flex;gap:10px;align-items:center;padding:9px 12px;border-radius:10px;color:var(--ink);font-weight:500;text-decoration:none}.nav a:hover{background:var(--sunk)}.nav a[aria-current=page]{background:var(--accent);color:var(--accent-ink)}.nav svg{width:18px;height:18px;flex:none}.side .foot{margin-top:auto;font-size:.8rem;color:var(--muted);display:flex;flex-direction:column;gap:10px}.tag{font-family:var(--display);font-style:italic;color:var(--gold)}main{min-width:0;padding-block:20px 110px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}.wrap{max-width:1000px;margin:0 auto;display:flex;flex-direction:column;gap:20px}.topbar{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}.chips{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.chip{display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:999px;font-size:.8rem;font-weight:600;background:var(--sunk);color:var(--ink);white-space:nowrap}.chip.gold{background:var(--gold-soft);color:var(--warn)}.chip.good{background:var(--good-soft);color:var(--good)}.chip.acc{background:var(--accent-soft);color:var(--accent)}.chip.bad{background:var(--bad-soft);color:var(--bad)}.avatar{width:34px;height:34px;border-radius:50%;object-fit:cover;background:var(--sunk);display:grid;place-items:center;font-weight:700;color:var(--accent);flex:none}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px;display:flex;flex-direction:column;gap:12px;min-width:0}.grid{display:grid;gap:16px}.g2{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(3,minmax(0,1fr))}.g4{grid-template-columns:repeat(4,minmax(0,1fr))}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 16px;border-radius:10px;font-weight:600;font-size:.9rem;background:var(--accent);color:var(--accent-ink);border:0;text-align:center;text-decoration:none;line-height:1.3}.btn.ghost{background:transparent;color:var(--accent);box-shadow:inset 0 0 0 1.5px var(--accent)}.btn.soft{background:var(--sunk);color:var(--ink)}.btn.small{padding:6px 10px;font-size:.8rem}.btn.google{background:var(--surface);color:var(--ink);box-shadow:inset 0 0 0 1px var(--line);width:100%;padding:12px}.btn[disabled]{opacity:.45;cursor:not-allowed}.link{background:none;border:0;padding:0;color:var(--accent);font-weight:600;font-size:.88rem;text-decoration:none;cursor:pointer;text-align:left}.bar{height:8px;background:var(--sunk);border-radius:99px;overflow:hidden}.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--gold));border-radius:99px;transition:width .4s}.hero{background:#6e1f28;color:#faf8f3;border-radius:18px;padding:22px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px;align-items:center}.hero h1{color:#faf8f3}.hero .sub{color:#e8d9d5}.hero .btn{background:#faf8f3;color:#6e1f28}.ring{width:96px;height:96px;flex:none}.course{padding:0;overflow:hidden}.cover{min-height:110px;padding:16px;display:flex;align-items:flex-end;justify-content:space-between;gap:8px;color:#faf8f3;font-family:var(--display);font-size:1.15rem;line-height:1.2}.cover.c1{background:linear-gradient(135deg,#8a8175,#5e564c)}.cover.c2{background:linear-gradient(135deg,#6e1f28,#4a1219)}.cover.c3{background:linear-gradient(135deg,#9c7b3c,#6e1f28)}.course .body{padding:16px;display:flex;flex-direction:column;gap:10px;flex:1}.lock{font-size:.8rem;font-weight:600;color:var(--muted)}.module{padding:14px 0 6px;font-weight:700;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}.lesson{display:grid;grid-template-columns:28px minmax(0,1fr) auto;gap:12px;align-items:center;padding:12px 10px;border-radius:10px;border-bottom:1px solid var(--line);text-decoration:none;color:inherit}.lesson:hover{background:var(--sunk)}.lesson .dot{width:24px;height:24px;border-radius:50%;border:1.5px solid var(--line);display:grid;place-items:center;font-size:.72rem;color:var(--muted)}.lesson.done .dot{background:var(--good);border-color:var(--good);color:#fff}.lesson.locked{opacity:.55}.lesson b{font-weight:600;display:block}.player{aspect-ratio:16/9;max-width:100%;width:100%;border-radius:14px;background:#1b1514;display:grid;place-items:center;color:#e8d9d5;overflow:hidden;border:0}iframe.player{display:block}.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);overflow-x:auto}.tabs button{background:none;border:0;padding:10px 14px;font-weight:600;font-size:.9rem;color:var(--muted);border-bottom:2px solid transparent;white-space:nowrap}.tabs button[aria-selected=true]{color:var(--accent);border-color:var(--accent)}ul.points{margin:0;padding-left:20px;display:flex;flex-direction:column;gap:8px}.check{display:flex;gap:10px;align-items:flex-start;padding:8px 0;cursor:pointer}.check input{width:18px;height:18px;accent-color:var(--accent);margin-top:3px;flex:none}textarea,input[type=text],input[type=url],input[type=email],input[type=number],select{width:100%;background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:10px 12px}label.f{display:flex;flex-direction:column;gap:6px;font-size:.85rem;font-weight:600}label.f span.hint{font-weight:400;color:var(--muted);font-size:.78rem}.stat{display:flex;flex-direction:column;gap:2px}.stat b{font-size:1.5rem;font-family:var(--display)}.wallet{background:var(--gold-soft);border-color:transparent}.copy{display:flex;gap:8px}.copy input{flex:1;min-width:0;font-size:.85rem}.tablewrap{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:.88rem}th,td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line);vertical-align:top}td{white-space:nowrap}td.wrap{white-space:normal;min-width:180px;display:table-cell;max-width:none;margin:0}td .chip{vertical-align:middle}th{font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:600;white-space:nowrap}.r{text-align:right}.flow{display:flex;gap:8px;flex-wrap:wrap;align-items:center;font-size:.85rem}.flow span{background:var(--sunk);padding:6px 10px;border-radius:8px}.flow em{color:var(--muted);font-style:normal}.empty{padding:24px;text-align:center;color:var(--muted);font-size:.9rem}.bottom{display:none}.toast{position:fixed;left:50%;transform:translate(-50%);bottom:calc(84px + env(safe-area-inset-bottom,0px));background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:10px;font-size:.88rem;font-weight:600;z-index:60;max-width:calc(100% - 32px)}.toast.err{background:var(--bad);color:#fff}.sheet{position:fixed;top:0;right:0;bottom:0;left:0;background:#1b15148c;display:grid;place-items:center;z-index:50;padding:16px}.sheet .card{max-width:460px;width:100%;max-height:92vh;overflow:auto}.qr{width:220px;max-width:100%;border-radius:10px;margin:0 auto;display:block;background:#fff}.center{min-height:100%;display:grid;place-items:center;padding:24px 16px}.login{max-width:420px;width:100%}.subnav{display:flex;gap:6px;flex-wrap:wrap}.subnav button{border:0;background:var(--sunk);padding:7px 12px;border-radius:999px;font-weight:600;font-size:.82rem;color:var(--muted)}.subnav button[aria-pressed=true]{background:var(--accent);color:var(--accent-ink)}.spinner{width:28px;height:28px;border-radius:50%;border:3px solid var(--line);border-top-color:var(--accent);animation:spin 1s linear infinite;margin:40px auto}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width:860px){.shell{grid-template-columns:minmax(0,1fr)}.side{display:none}.g3,.g4{grid-template-columns:repeat(2,minmax(0,1fr))}.bottom{display:grid;grid-template-columns:repeat(5,1fr);position:fixed;left:0;right:0;bottom:0;background:var(--surface);border-top:1px solid var(--line);padding:6px max(6px,env(safe-area-inset-right,0px)) calc(6px + env(safe-area-inset-bottom,0px)) max(6px,env(safe-area-inset-left,0px));z-index:30}.bottom a{display:flex;flex-direction:column;align-items:center;gap:2px;font-size:.68rem;font-weight:600;color:var(--muted);padding:4px 0;text-decoration:none}.bottom a[aria-current=page]{color:var(--accent)}.bottom svg{width:20px;height:20px}}@media (max-width:560px){.g2,.g3,.g4,.hero{grid-template-columns:minmax(0,1fr)}.ring{display:none}}@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}.old-box{border:1px dashed var(--line);border-radius:12px;padding:6px 12px}.classes{display:flex;gap:4px 12px;flex-wrap:wrap}.classes .check{padding:2px 0;gap:6px;font-size:.85rem;white-space:nowrap}.classes .check input{margin-top:2px}.choice{display:grid;grid-template-columns:1fr 1fr;gap:8px}.choice button{display:flex;flex-direction:column;gap:2px;text-align:left;padding:12px;border-radius:12px;border:1.5px solid var(--line);background:var(--card,transparent);color:var(--ink);cursor:pointer;font:inherit}.choice button[aria-checked=true]{border-color:var(--accent);background:var(--accent-soft)}.choice button b{font-size:.92rem}@media (max-width:420px){.choice{grid-template-columns:1fr}}