:root{--bg:#f6f7fb;--card:#fff;--ink:#0f172a;--muted:#64748b;--line:#e2e8f0;--brand:#1d4ed8;--brand2:#0ea5e9;--good:#16a34a;--bad:#dc2626;--warn:#d97706;--radius:14px;--shadow:0 1px 2px rgba(15,23,42,.06),0 4px 16px rgba(15,23,42,.05)}
@media (prefers-color-scheme:dark){:root{--bg:#0b1120;--card:#111827;--ink:#e5e7eb;--muted:#94a3b8;--line:#1f2937;--brand:#60a5fa;--brand2:#38bdf8;--shadow:none}}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:120px}
body{margin:0;font:16px/1.6 Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--ink)}
a{color:var(--brand)}code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.88em;background:rgba(100,116,139,.12);padding:.1em .35em;border-radius:5px}
pre{background:#0f172a;color:#e2e8f0;padding:14px 16px;border-radius:10px;overflow:auto;font-size:.85rem;line-height:1.5}pre code{background:none;padding:0;color:inherit}
.topbar{position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:16px;padding:10px 20px;background:rgba(255,255,255,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
@media (prefers-color-scheme:dark){.topbar{background:rgba(17,24,39,.85)}}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);text-decoration:none;white-space:nowrap}
.logo{display:grid;place-items:center;width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;font-size:.85rem}
.toplinks{display:flex;gap:4px}.toplinks a{padding:6px 10px;border-radius:8px;color:var(--muted);text-decoration:none;font-weight:500;font-size:.93rem}.toplinks a:hover,.toplinks a.active{background:rgba(29,78,216,.08);color:var(--brand)}
.search{position:relative;margin-left:auto;width:min(340px,40vw)}.search input{width:100%;padding:9px 12px;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--ink);font:inherit}
.search-results{position:absolute;right:0;top:44px;width:min(460px,92vw);max-height:70vh;overflow:auto;background:var(--card);border:1px solid var(--line);border-radius:12px;box-shadow:0 12px 40px rgba(0,0,0,.18);display:none}
.search-results.open{display:block}.sr{display:block;padding:10px 14px;border-bottom:1px solid var(--line);text-decoration:none;color:var(--ink)}.sr:hover,.sr.sel{background:rgba(29,78,216,.08)}
.sr small{display:block;color:var(--muted);font-size:.8rem}.sr .tag{font-size:.7rem;text-transform:uppercase;letter-spacing:.05em;color:var(--brand);font-weight:700;margin-right:6px}
.icon-btn{display:none;border:0;background:none;font-size:1.4rem;color:var(--ink);cursor:pointer}
.layout{display:grid;grid-template-columns:290px 1fr;min-height:calc(100vh - 57px)}
.sidebar{position:sticky;top:57px;height:calc(100vh - 57px);overflow:auto;padding:16px 12px;border-right:1px solid var(--line);background:var(--card)}
.side-head{font-weight:700;padding:0 8px 8px;display:flex;justify-content:space-between}.side-head span{color:var(--muted);font-weight:500;font-size:.85rem}
.side-ptitle{font-size:.75rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:700;margin:14px 8px 4px}
.side-link{display:flex;gap:8px;align-items:baseline;padding:6px 8px;border-radius:8px;color:var(--ink);text-decoration:none;font-size:.88rem;line-height:1.3}.side-link b{color:var(--muted);font-weight:600;min-width:34px}
.side-link:hover{background:rgba(100,116,139,.1)}.side-link.active{background:rgba(29,78,216,.1);color:var(--brand)}
.tick{flex:none;width:14px;height:14px;border-radius:50%;border:2px solid var(--line);display:inline-block;transform:translateY(2px)}.done .tick{background:var(--good);border-color:var(--good);box-shadow:inset 0 0 0 2px var(--card)}
.main{padding:28px clamp(16px,4vw,48px) 40px;max-width:1100px;width:100%}
.scrim{display:none}
h1{font-size:clamp(1.6rem,3vw,2.2rem);line-height:1.2;margin:.2em 0 .4em}.lead{font-size:1.1rem;color:var(--muted);max-width:70ch}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px 24px;margin:18px 0;box-shadow:var(--shadow)}
.card h2{margin-top:0;font-size:1.25rem}.muted{color:var(--muted)}
.prose table{border-collapse:collapse;width:100%;font-size:.92rem;margin:12px 0;display:block;overflow-x:auto}.prose th,.prose td{border:1px solid var(--line);padding:6px 10px;text-align:left;vertical-align:top}.prose th{background:rgba(100,116,139,.08)}
.prose blockquote{margin:12px 0;padding:10px 16px;border-left:4px solid var(--brand2);background:rgba(14,165,233,.07);border-radius:0 10px 10px 0}
.btn{display:inline-flex;align-items:center;gap:6px;padding:9px 16px;border-radius:10px;border:1px solid var(--brand);background:var(--brand);color:#fff;font:600 .93rem/1.2 inherit;text-decoration:none;cursor:pointer}
.btn:disabled{opacity:.45;cursor:not-allowed}.btn.ghost{background:transparent;color:var(--brand)}.btn.small{padding:5px 10px;font-size:.82rem}
.btn.good{background:var(--good);border-color:var(--good)}.btn.bad{background:var(--bad);border-color:var(--bad)}
.hero{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;padding:28px;border-radius:20px;color:#fff;background:linear-gradient(135deg,#1e3a8a,#0369a1 60%,#0e7490)}
.hero .lead{color:#dbeafe}.eyebrow{text-transform:uppercase;letter-spacing:.08em;font-size:.78rem;opacity:.85;font-weight:700}
.hero .btn{background:#fff;color:#1e3a8a;border-color:#fff}.hero .btn.ghost{background:transparent;color:#fff}.hero-actions{display:flex;gap:10px;flex-wrap:wrap}
.ring-wrap{position:relative;width:150px;height:150px}.ring{width:150px;height:150px;transform:rotate(-90deg)}.ring circle{fill:none;stroke-width:12}.ring-bg{stroke:rgba(255,255,255,.2)}.ring-fg{stroke:#fff;stroke-linecap:round;stroke-dasharray:326.7;stroke-dashoffset:326.7;transition:stroke-dashoffset .6s}
.ring-text{position:absolute;inset:0;display:grid;place-content:center;text-align:center}.ring-text b{font-size:1.9rem}.ring-text span{font-size:.8rem;opacity:.85}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:18px}.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px 18px}.stat b{display:block;font-size:1.5rem}.stat span{color:var(--muted);font-size:.85rem}
.bar{height:12px;background:rgba(100,116,139,.15);border-radius:99px;overflow:hidden}.bar.small{height:6px;margin:10px 0 4px}.fill{height:100%;width:0;background:linear-gradient(90deg,var(--brand),var(--brand2));border-radius:99px;transition:width .5s}
.section-title{margin-top:30px}.phase-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px}
.phase-card{background:var(--card);border:1px solid var(--line);border-top:4px solid var(--pc);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.pc-top{display:flex;gap:12px;align-items:center}.pc-icon{font-size:1.8rem}.pc-label{font-size:.78rem;color:var(--muted);font-weight:600}.phase-card h3{margin:0;font-size:1.08rem}
.pc-goal{font-size:.88rem;color:var(--muted);margin:10px 0 0}.phase-card .fill{background:var(--pc)}.pc-count{font-size:.78rem;color:var(--muted)}
.mchips{display:flex;flex-direction:column;gap:4px;margin-top:10px}.mchip{display:flex;gap:8px;align-items:baseline;padding:5px 8px;border-radius:8px;text-decoration:none;color:var(--ink);font-weight:600;font-size:.86rem}.mchip:hover{background:rgba(100,116,139,.1)}
.mchip .mt{font-weight:400;flex:1}.mchip .mh{color:var(--muted);font-weight:400;font-size:.78rem}
.table-wrap{overflow-x:auto}.sched{border-collapse:collapse;width:100%;font-size:.9rem}.sched td,.sched th{padding:7px 10px;border-bottom:1px solid var(--line);text-align:left}.sched tr.current{background:rgba(29,78,216,.08)}.sched tr.wdone td{color:var(--muted)}
.mod-hero{padding:22px 24px;border-radius:18px;background:linear-gradient(135deg,color-mix(in srgb,var(--pc) 18%,var(--card)),var(--card));border:1px solid var(--line);border-left:6px solid var(--pc)}
.crumbs{font-size:.85rem;color:var(--muted)}.crumbs a{color:var(--muted)}.mod-id{display:inline-block;margin-top:8px;font-weight:800;color:var(--pc);letter-spacing:.04em}
.meta{display:flex;flex-wrap:wrap;gap:8px}.meta span{background:var(--card);border:1px solid var(--line);border-radius:99px;padding:3px 11px;font-size:.84rem}
.status-pill:empty{display:none}.status-pill.is-done{background:var(--good)!important;color:#fff;border-color:var(--good)!important}
.phase-goal{margin-top:12px;font-size:.92rem}.phase-goal summary{cursor:pointer;color:var(--muted);font-weight:600}
.tabs{position:sticky;top:57px;z-index:20;display:flex;gap:4px;overflow-x:auto;margin:16px 0 0;padding:8px 0;background:var(--bg)}.tabs a{white-space:nowrap;padding:6px 12px;border-radius:99px;text-decoration:none;color:var(--muted);font-weight:600;font-size:.88rem;border:1px solid var(--line);background:var(--card)}.tabs a.on{color:#fff;background:var(--brand);border-color:var(--brand)}
.callout{padding:10px 16px;border-radius:12px;background:rgba(217,119,6,.08);border:1px solid rgba(217,119,6,.3);margin-top:14px}
.checklist{list-style:none;padding:0;margin:0}.checklist li{padding:6px 0;border-bottom:1px dashed var(--line)}.checklist label{display:flex;gap:10px;cursor:pointer}.checklist input{margin-top:5px;transform:scale(1.2);accent-color:var(--good)}
.checklist input:checked+span{color:var(--muted);text-decoration:line-through}
.donebox{display:inline-flex;gap:8px;align-items:center;margin-top:12px;padding:8px 14px;border-radius:10px;background:rgba(22,163,74,.08);border:1px solid rgba(22,163,74,.3);font-weight:600;cursor:pointer}.donebox input{accent-color:var(--good);transform:scale(1.2)}
.downloads{display:flex;flex-direction:column;gap:6px;margin:6px 0 14px;padding:12px;border:1px dashed var(--brand2);border-radius:12px;background:rgba(14,165,233,.05)}.dl-title{font-weight:700;font-size:.9rem}
.dl{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:.88rem}.dl-name{min-width:200px}.dl-desc{flex:1;color:var(--muted);min-width:180px}.dl a,.pill{padding:3px 10px;border-radius:99px;background:var(--brand);color:#fff;text-decoration:none;font-weight:600;font-size:.78rem}
.files{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:6px}.file{font-family:ui-monospace,monospace;font-size:.82rem;padding:6px 10px;border:1px solid var(--line);border-radius:8px;text-decoration:none}
.q{border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin:12px 0;transition:border-color .3s}.q.correct{border-color:var(--good);background:rgba(22,163,74,.04)}.q.wrong{border-color:var(--bad);background:rgba(220,38,38,.04)}
.q-head{display:flex;gap:10px}.q-num{flex:none;font-weight:800;color:var(--brand);font-size:.8rem;padding-top:3px}.q-text{font-weight:600}
.q-input,.notes{width:100%;margin-top:10px;padding:9px 12px;border:1px solid var(--line);border-radius:10px;font:inherit;background:var(--bg);color:var(--ink);resize:vertical}
.q-actions{display:flex;align-items:center;gap:10px;margin-top:8px;flex-wrap:wrap}.q-hint{font-size:.8rem;color:var(--muted)}
.q-answer{margin-top:12px;padding:12px 14px;border-radius:10px;background:rgba(29,78,216,.06);border-left:4px solid var(--brand);animation:pop .25s}.q-alabel{font-size:.75rem;text-transform:uppercase;font-weight:800;color:var(--brand);letter-spacing:.06em}
.q-grade{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-top:10px;font-size:.88rem}.q-result{font-weight:700}
.quiz-score{font-weight:700;color:var(--muted)}@keyframes pop{from{opacity:0;transform:translateY(-4px)}to{opacity:1}}
.complete-card{border:2px solid rgba(22,163,74,.4)}.bigcheck{display:flex;gap:12px;align-items:center;font-size:1.15rem;cursor:pointer}.bigcheck input{transform:scale(1.6);accent-color:var(--good)}
.pn{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;margin:20px 0}
.foot{margin-top:40px;padding-top:16px;border-top:1px solid var(--line);color:var(--muted);font-size:.83rem}.linkbtn{background:none;border:0;color:var(--brand);cursor:pointer;font:inherit;padding:0;text-decoration:underline}
.glossary{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:4px 20px}.gterm{padding:8px 0;border-bottom:1px solid var(--line)}.gterm dt{font-weight:700}.gterm dd{margin:0;color:var(--muted)}.gterm:target{background:rgba(250,204,21,.25)}
.filter{width:100%;max-width:420px;padding:10px 14px;border:1px solid var(--line);border-radius:10px;font:inherit;background:var(--card);color:var(--ink)}
.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:#0f172a;color:#fff;padding:10px 18px;border-radius:10px;z-index:99;animation:pop .2s}
@media (max-width:900px){.layout{grid-template-columns:1fr}.icon-btn{display:block}.toplinks{display:none}
.sidebar{position:fixed;left:0;top:0;height:100vh;width:300px;z-index:50;transform:translateX(-105%);transition:transform .25s;box-shadow:0 0 40px rgba(0,0,0,.3)}
body.menu-open .sidebar{transform:none}body.menu-open .scrim{display:block;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:40}
.stats{grid-template-columns:repeat(2,1fr)}.brand span:last-child{display:none}.search{width:auto;flex:1}.tabs{top:55px}}