@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap";:root{--navy: #071426;--navy-2: #102a52;--primary: #1e4db7;--primary-dark: #163c91;--gold: #c8962a;--ink: #0a1628;--muted: #566276;--line: #dfe5ed;--bg: #f5f8fc;--card: #ffffff;--good: #1a7f4b;--bad: #c02626;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif;color:var(--ink)}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg)}h1{font-size:1.5rem;margin:0 0 12px}h2{font-size:1.15rem;margin:24px 0 10px}h3{font-size:1rem;margin:0 0 6px}p{line-height:1.55}a{color:inherit;text-decoration:none}.muted{color:var(--muted)}.small{font-size:.85rem}.tm{color:var(--muted);font-size:.75rem;margin-top:8px}.app{display:flex;flex-direction:column;min-height:100%}.app-header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;padding:12px 16px;background:#fffffff7;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.brand{font-weight:800;font-size:1.1rem;letter-spacing:-.01em}.brand span{color:var(--primary)}.brand em{font-style:normal;font-weight:600;color:var(--muted)}.brand-lg{font-size:1.5rem;margin-bottom:8px}.app-nav{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.app-nav a{color:var(--muted);font-weight:600;padding:6px 2px}.app-nav a.active,.app-nav a:hover{color:var(--primary)}.app-main{flex:1;width:100%}.app-footer{padding:20px 16px;color:var(--muted);font-size:.8rem;border-top:1px solid var(--line);text-align:center}.page{width:100%;max-width:1100px;margin:0 auto;padding:24px 16px 48px}.page.reading{max-width:760px}.page-head{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}.back{color:var(--primary);font-weight:600;display:inline-block;margin-bottom:12px}.prose{color:#37414f}.row-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 20px;border:1px solid var(--primary);border-radius:6px;background:var(--primary);color:#fff;font:inherit;font-weight:700;cursor:pointer}.button:hover{background:var(--primary-dark)}.button:disabled{opacity:.55;cursor:default}.button.ghost{background:transparent;color:var(--primary)}.button.ghost:hover{background:#1e4db712}.link-btn{border:0;background:none;font:inherit;color:var(--muted);font-weight:600;cursor:pointer;padding:6px 2px}.link-btn:hover{color:var(--primary)}.link-btn.danger{color:var(--bad);margin-top:24px}label{display:block;font-weight:600;font-size:.9rem;margin:14px 0 6px}input{width:100%;padding:12px;border:1px solid #cfd6df;border-radius:6px;font:inherit;background:#fff}input:focus{outline:2px solid #adc2f3;border-color:var(--primary)}.auth-wrap{min-height:100vh;display:grid;place-items:center;padding:24px 16px;background:radial-gradient(circle at 75% 15%,#254f94 0,transparent 32%),linear-gradient(125deg,#071426,#102c55 70%,#173e75)}.auth-card{width:100%;max-width:420px;background:#fff;border-radius:12px;padding:32px;box-shadow:0 20px 50px #040c1c59}.auth-card h1{margin-top:4px}.grid{display:grid;gap:16px;margin-top:20px;grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}.search{display:flex;gap:8px}.search input{min-width:0}.card{display:flex;flex-direction:column;gap:6px;padding:20px;background:var(--card);border:1px solid var(--line);border-radius:10px;box-shadow:0 10px 30px #0a16280a;transition:transform .08s ease,box-shadow .12s ease}a.card:hover{transform:translateY(-2px);box-shadow:0 14px 34px #0a16281a}.card.disabled{opacity:.6}.card-top{display:flex;align-items:center;justify-content:space-between}.short{font-weight:800;color:var(--primary);font-size:.85rem;letter-spacing:.02em}.card-meta{color:var(--muted);font-size:.82rem;display:flex;gap:6px}.badge{display:inline-block;font-size:.7rem;font-weight:800;padding:3px 9px;border-radius:999px;letter-spacing:.03em}.badge-free{background:#e6f4ec;color:var(--good)}.badge-premium{background:#fbf0d8;color:#8a5a00}.badge-soon{background:#eef1f6;color:var(--muted);align-self:flex-start}.cert-head{display:flex;align-items:center;gap:12px}.notice-box{margin:16px 0;padding:14px 16px;border-left:4px solid var(--gold);background:#fdf7e8;border-radius:6px;color:#6b4d12;font-size:.9rem}.pkg-list{list-style:none;padding:0;margin:8px 0 0;display:flex;flex-direction:column;gap:12px}.pkg{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:18px;border:1px solid var(--line);border-left:4px solid var(--primary);border-radius:8px;background:#fff}.pkg-actions{display:flex;gap:10px;flex-wrap:wrap}.exam-bar{position:sticky;top:64px;z-index:10;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px;padding:10px 14px;background:var(--navy);color:#dbe4f1;border-radius:8px;margin-bottom:18px;font-size:.85rem}.exam-bar .timer{font-weight:800;letter-spacing:.04em}.exam-bar .timer.urgent{color:#ffb4b4}.q-text{font-size:1.1rem;line-height:1.6;font-weight:500}.q-media{display:flex;flex-direction:column;gap:12px;margin:12px 0}.q-media img{max-width:100%;height:auto;border:1px solid var(--line);border-radius:8px}.options{list-style:none;padding:0;margin:16px 0;display:flex;flex-direction:column;gap:10px}.option{display:flex;align-items:flex-start;gap:12px;min-height:44px;padding:14px 16px;border:1px solid var(--line);border-radius:8px;background:#fff;cursor:pointer}.option:hover{border-color:#b9c6dc}.option input{width:auto;margin-top:3px;flex:none}.option.chosen{border-color:var(--primary);background:#f2f6fe}.option.correct{border-color:var(--good);background:#eaf6ef}.option.incorrect{border-color:var(--bad);background:#fbecec}.feedback{margin-top:14px;padding:14px 16px;border-radius:8px}.feedback.good{background:#eaf6ef;border:1px solid #bfe2cd}.feedback.bad{background:#fbecec;border:1px solid #f0c9c9}.exam-actions{display:flex;justify-content:space-between;gap:12px;margin-top:20px}.navigator{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}.nav-cell{width:42px;height:42px;border:1px solid var(--line);border-radius:8px;background:#fff;font:inherit;font-weight:700;color:var(--muted);cursor:pointer}.nav-cell.done{border-color:var(--primary);color:var(--primary);background:#f2f6fe}.nav-cell.current{outline:2px solid var(--primary);outline-offset:1px;color:var(--ink)}.result-hero{text-align:center;padding:28px;border-radius:12px;background:#fff;border:1px solid var(--line);margin:10px 0 20px}.result-hero.pass{border-color:#bfe2cd;background:#f2fbf5}.result-hero.fail{border-color:#f0c9c9;background:#fdf4f4}.result-hero .score{font-size:2.6rem;font-weight:800}.result-hero .score span{font-size:1.2rem;color:var(--muted);font-weight:600}.result-hero .pct{font-size:1.1rem;color:var(--muted)}.result-hero .verdict{margin-top:6px;font-weight:800}.result-hero.pass .verdict{color:var(--good)}.result-hero.fail .verdict{color:var(--bad)}.result-hero .passmark{color:var(--muted);font-size:.82rem;margin-top:8px}.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.stat{background:#fff;border:1px solid var(--line);border-radius:8px;padding:14px;text-align:center}.stat b{display:block;font-size:1.4rem}.stat span{color:var(--muted);font-size:.78rem}.grid.stats{grid-template-columns:repeat(auto-fill,minmax(180px,1fr))}.stat-card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:22px}.stat-card b{display:block;font-size:1.9rem;color:var(--primary)}.stat-card span{color:var(--muted);font-size:.85rem}.error-note{margin:12px 0;padding:12px 14px;border-radius:8px;background:#fbecec;border:1px solid #f0c9c9;color:#8a1f1f;font-size:.9rem}.spinner{display:flex;align-items:center;gap:12px;color:var(--muted);padding:40px 0;justify-content:center}.spinner-dot{width:18px;height:18px;border:3px solid #cfd6df;border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:520px){.stat-row{grid-template-columns:repeat(2,1fr)}.exam-actions{flex-direction:row}.pkg{flex-direction:column;align-items:stretch}.pkg-actions .button{flex:1}}.pkg-group{margin:18px 0 8px}.pkg-group>.pkg-info>h3{font-size:1.05rem}.badge-mode{margin-left:8px;background:#eef1f6;color:var(--muted);vertical-align:middle}.flashcard{width:100%;min-height:260px;margin:8px 0;padding:28px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;cursor:pointer;border:1px solid var(--line);border-radius:14px;background:#fff;font:inherit;box-shadow:0 12px 34px #0a16280f}.flashcard.flipped{background:#f2f6fe;border-color:var(--primary)}.fc-side-label{font-size:.72rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}.fc-content{font-size:1.25rem;line-height:1.5;color:var(--ink)}.fc-hint{font-size:.75rem;color:var(--muted)}.bm-list{list-style:none;padding:0;margin:12px 0;display:flex;flex-direction:column;gap:10px}.bm{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding:16px;border:1px solid var(--line);border-radius:8px;background:#fff}.bm-q{margin:0 0 4px;font-weight:500}.acct-section{padding:18px 0;border-top:1px solid var(--line)}.acct-section:first-of-type{border-top:0}.plain{list-style:none;padding:0;margin:8px 0;display:flex;flex-direction:column;gap:6px}.danger-zone h2{color:var(--bad)}.danger-btn{background:var(--bad);border-color:var(--bad)}.danger-btn:hover{background:#a11f1f}.deck-block{margin-top:10px}.deck-block h4{margin:6px 0;font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}.home-hero{padding:28px 22px;margin-bottom:8px;border-radius:12px;color:#fff;background:linear-gradient(135deg,var(--navy),var(--navy-2))}.home-hero h1{font-size:1.7rem;margin-bottom:8px}.home-hero p{margin:0;color:#d6e0f2}.home-hero .row-actions{margin-top:18px}.home-hero .hero-ghost{color:#fff;border-color:#fff9}.home-hero .hero-ghost:hover{background:#ffffff1f}.home-premium{margin-top:32px;padding:20px;background:var(--card);border:1px solid var(--line);border-left:4px solid var(--gold);border-radius:8px}.home-premium h2{margin-top:6px}.home-premium.active{border-left-color:var(--good)}.premium-active{padding:20px;background:var(--card);border:1px solid var(--line);border-left:4px solid var(--good);border-radius:8px}.plan-grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));margin-top:16px}.plan{padding:20px;background:var(--card);border:1px solid var(--line);border-radius:8px;display:flex;flex-direction:column;gap:8px}.plan-price{font-size:1.5rem;font-weight:800;margin:0}.badge-inline{margin-left:8px;vertical-align:middle}@media(min-width:720px){.home-hero{padding:40px 36px}.home-hero h1{font-size:2.1rem}}.auth-switch{margin:18px 0 0;text-align:center;font-size:.9rem;color:var(--muted)}.auth-switch a{color:var(--primary);font-weight:700}.check{display:flex;gap:10px;align-items:flex-start;font-weight:500;margin:14px 0;cursor:pointer}.check input{width:auto;margin-top:3px;flex:none}.check a{color:var(--primary);text-decoration:underline}.consent-set{border:1px solid var(--line);border-radius:8px;padding:4px 14px 8px;margin:16px 0}.consent-set legend{font-weight:700;font-size:.85rem;padding:0 6px}.auth-card form .button{width:100%;margin-top:8px}.landing{max-width:1200px;margin:auto;padding:0 28px}.landing-nav{display:flex;justify-content:space-between;align-items:center;padding:24px 0;border-bottom:1px solid var(--line)}.landing-nav nav{display:flex;gap:24px;align-items:center}.landing-hero{padding:85px 0 70px;max-width:900px}.landing-hero h1{font-size:clamp(36px,5.8vw,68px);line-height:1.12;letter-spacing:-.035em;margin:18px 0 24px}.landing-lead{font-size:20px;line-height:1.7;max-width:700px}.landing-actions{display:flex;gap:14px;margin:30px 0 18px}.eyebrow{font-size:12px;font-weight:700;letter-spacing:.12em;color:#846020}.landing-features{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;padding:30px 0 60px}.landing-features article{padding:26px;border:1px solid var(--line);border-radius:16px;background:var(--card)}.landing-features article>span{color:#846020;font-weight:700}.landing-features h2{font-size:21px}.landing-bottom{padding:40px;border-radius:20px;background:#f3efe5;margin-bottom:48px}.landing-bottom h2{margin-top:0}.plan h2{font-size:21px}.plan-price small{font-size:14px}.plan .button{width:100%}.landing a:focus-visible,.app a:focus-visible,.app button:focus-visible{outline:3px solid #b58128;outline-offset:4px}@media(max-width:700px){.landing{padding:0 18px}.landing-nav{gap:16px;align-items:flex-start}.landing-nav nav{gap:12px;flex-wrap:wrap;justify-content:flex-end;font-size:14px}.landing-nav nav>a:first-child{display:none}.landing-hero{padding:48px 0 30px}.landing-features{grid-template-columns:1fr;gap:14px}.landing-actions{flex-wrap:wrap}.landing-bottom{padding:24px}.app-nav{flex-wrap:wrap;gap:12px}}