:root{
 /* highlight colours live here -- change these two lines to recolour every highlight */
 --kt-hl:#cfe0ff; --kt-line:#2f27a3; /* key terms: blue marker */
 --mark-hl:#ffe0a6; --mark-line:#9a5b00; /* ==important==: warm marker */
 --bg:#ffffff; --surface:#ffffff; --surface-2:#eef0f3; --surface-3:#e3e5ea;
 --border:#cfd2d8; --border-strong:#a9adb6;
 --text:#0f1115; --text-2:#33363d; --text-3:#5c6069;
 --accent:#2f27a3; --accent-soft:rgba(47,39,163,.12); --accent-line:rgba(47,39,163,.55);
 --good:#13702f; --good-soft:rgba(19,112,47,.14);
 --warn:#925000; --warn-soft:rgba(146,80,0,.13);
 --bad:#aa120b; --bad-soft:rgba(170,18,11,.13);
 --shadow:0 1px 2px rgba(15,15,20,.06),0 6px 18px rgba(15,15,20,.08);
 --radius:14px; --maxw:76ch; --reading:18px;
 --sans:Arial,"Helvetica Neue",Helvetica,"Segoe UI",sans-serif;
 --mono:"SF Mono",Menlo,Consolas,monospace;
}
html[data-theme="dark"]{
 --kt-hl:rgba(150,170,255,.22); --kt-line:#aab8ff;
 --mark-hl:rgba(255,196,90,.24); --mark-line:#ffc861;
 --bg:#0f1014; --surface:#171820; --surface-2:#1f212b; --surface-3:#2a2c38;
 --border:#30323e; --border-strong:#444656;
 --text:#f3f4f7; --text-2:#b6b8c2; --text-3:#7e818d;
 --accent:#aab8ff; --accent-soft:rgba(170,184,255,.14); --accent-line:rgba(170,184,255,.55);
 --good:#56e08a; --good-soft:rgba(86,224,138,.16);
 --warn:#ffc861; --warn-soft:rgba(255,200,97,.16);
 --bad:#ff8a82; --bad-soft:rgba(255,138,130,.16);
 --shadow:0 1px 2px rgba(0,0,0,.35),0 8px 28px rgba(0,0,0,.4);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);
 font-size:var(--reading);line-height:1.6;-webkit-font-smoothing:antialiased;letter-spacing:0}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* topbar */
.topbar{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 85%,transparent);
 backdrop-filter:saturate(140%) blur(10px);border-bottom:1px solid var(--border);
 padding:10px clamp(14px,3vw,28px)}
.topbar-row{display:flex;align-items:center;gap:14px;max-width:1280px;margin:0 auto;flex-wrap:wrap}
.brand{display:flex;flex-direction:column;line-height:1.2;margin-right:auto;min-width:0}
.brand b{font-size:15px;font-weight:680;letter-spacing:-.01em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:46vw}
.brand span{font-size:11px;color:var(--text-3);text-transform:uppercase;letter-spacing:.09em}
.modeswitch{display:inline-flex;background:var(--surface-2);border:1px solid var(--border);
 border-radius:10px;padding:3px}
.modeswitch button{border:0;background:transparent;color:var(--text-2);font:inherit;font-size:13px;
 font-weight:560;padding:6px 13px;border-radius:7px;cursor:pointer}
.modeswitch button.on{background:var(--surface);color:var(--text);box-shadow:var(--shadow)}
.search{position:relative}
.search input{border:1px solid var(--border);background:var(--surface);color:var(--text);
 font:inherit;font-size:13px;padding:7px 11px 7px 30px;border-radius:9px;width:170px}
.search input:focus{outline:2px solid var(--accent-line);outline-offset:1px}
.search svg{position:absolute;left:9px;top:8px;width:14px;height:14px;color:var(--text-3)}
.iconbtn{border:1px solid var(--border);background:var(--surface);color:var(--text-2);
 width:34px;height:34px;border-radius:9px;cursor:pointer;display:grid;place-items:center}
.iconbtn:hover{color:var(--text);border-color:var(--border-strong)}
.iconbtn svg{width:16px;height:16px}
.iconbtn.txt{font-weight:800;font-size:13px;letter-spacing:-.02em}
.fontctl{display:inline-flex;gap:4px}
.minibar{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-2)}
.minibar .track{width:90px;height:6px;border-radius:99px;background:var(--surface-3);overflow:hidden}
.minibar .fill{height:100%;background:var(--good);width:0%}

/* layout */
.layout{display:grid;grid-template-columns:248px minmax(0,1fr);gap:34px;
 max-width:1280px;margin:0 auto;padding:30px clamp(14px,3vw,28px) 120px}
.toc{position:sticky;top:74px;align-self:start;max-height:calc(100vh - 96px);overflow:auto;
 font-size:13.5px;padding-right:6px}
.toc h4{font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--text-3);
 margin:0 0 10px 8px;font-weight:680}
.toc a{display:block;color:var(--text-2);text-decoration:none;padding:5px 10px;border-radius:7px;
 border-left:2px solid transparent;line-height:1.35}
.toc a:hover{background:var(--surface-2);color:var(--text)}
.toc a.active{color:var(--accent);border-left-color:var(--accent);background:var(--accent-soft);font-weight:560}
.toc a small{display:block;color:var(--text-3);font-size:10.5px;letter-spacing:.06em;text-transform:uppercase}

main{min-width:0;max-width:var(--maxw)}
.lead{margin-bottom:38px}
.lead h1{font-size:clamp(28px,4vw,40px);line-height:1.08;letter-spacing:-.025em;margin:0 0 6px;font-weight:730}
.lead p{color:var(--text-2);margin:0;font-size:16px}

/* topic */
.topic{margin-bottom:24px;scroll-margin-top:80px}
.topic-head{display:flex;align-items:baseline;gap:12px;margin:44px 0 8px}
.topic-head .sec{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--accent);
 text-transform:uppercase;font-weight:600}
.topic h2{font-size:clamp(21px,2.6vw,27px);letter-spacing:-.02em;margin:0;font-weight:680;line-height:1.15}
.summary{color:var(--text);font-size:1em;margin:10px 0 22px;border-left:3px solid var(--accent-line);
 padding:4px 0 4px 17px;line-height:1.62}

/* key terms strip */
.terms{display:flex;flex-wrap:wrap;gap:8px;margin:2px 0 24px}
.term-chip{background:var(--surface);border:1px solid var(--border);border-radius:99px;
 padding:6px 13px 6px 12px;font-size:.78em;cursor:pointer;display:inline-flex;gap:7px;align-items:center}
.term-chip:hover{border-color:var(--accent-line);background:var(--accent-soft)}
.term-chip b{font-weight:620}
.term-chip .dot{width:6px;height:6px;border-radius:99px;background:var(--accent)}

/* inline key term + highlight (visual cues, no flashcards) */
.kt{font-weight:700;color:var(--text);background:var(--kt-hl);padding:.5px 4px;border-radius:4px;
 border-bottom:2px solid var(--kt-line);cursor:help;text-decoration:none;
 -webkit-box-decoration-break:clone;box-decoration-break:clone}
.kt:hover{filter:brightness(.96)}
.kt.bare{background:var(--surface-2);border-bottom-color:var(--border-strong);cursor:default}
mark.hl{background:var(--mark-hl);color:var(--text);font-weight:680;padding:.5px 4px;border-radius:4px;
 -webkit-box-decoration-break:clone;box-decoration-break:clone}

/* blocks */
.block{margin:0 0 22px}
.block.prose p{margin:0 0 13px}
.block.prose p:last-child{margin-bottom:0}
.block ul,.block ol{margin:0 0 4px;padding-left:22px}
.block li{margin:0 0 7px}
.block strong{font-weight:660}

table{border-collapse:collapse;width:100%;font-size:.86em;background:var(--surface);
 border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
caption{caption-side:top;text-align:left;font-size:12.5px;color:var(--text-3);
 text-transform:uppercase;letter-spacing:.08em;margin-bottom:7px;font-weight:600}
th,td{padding:10px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--border)}
th{background:var(--surface-2);font-weight:620;font-size:12.5px;letter-spacing:.02em}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover{background:var(--surface-2)}

.callout{border:1px solid var(--border);border-left-width:4px;border-radius:12px;
 padding:16px 18px;background:var(--surface);box-shadow:var(--shadow)}
.callout .ct{font-size:12px;font-weight:680;letter-spacing:.05em;text-transform:uppercase;
 margin-bottom:7px;display:flex;align-items:center;gap:6px}
.callout .ce{font-size:14.5px;line-height:1;letter-spacing:0}
.callout p{margin:0}
.callout.key{border-left-color:var(--accent)} .callout.key .ct{color:var(--accent)}
.callout.warn{border-left-color:var(--warn);background:var(--warn-soft)} .callout.warn .ct{color:var(--warn)}
.callout.example{border-left-color:var(--good)} .callout.example .ct{color:var(--good)}
.callout.tip{border-left-color:var(--text-3)} .callout.tip .ct{color:var(--text-2)}

/* mind map */
.map{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
 padding:18px;box-shadow:var(--shadow)}
.map-root{display:inline-block;background:var(--accent);color:#fff;font-weight:640;font-size:14px;
 padding:7px 14px;border-radius:9px;margin-bottom:4px}
.map-branches{display:flex;flex-direction:column;gap:2px;margin-left:10px;
 border-left:2px solid var(--accent-line);padding-left:18px;margin-top:6px}
.map-branch{padding:6px 0}
.map-branch>b{font-size:14px;font-weight:620;display:inline-block;margin-bottom:4px}
.map-children{display:flex;flex-wrap:wrap;gap:6px}
.map-children span{background:var(--surface-2);border:1px solid var(--border);border-radius:7px;
 padding:3px 10px;font-size:13px;color:var(--text-2)}

/* questions / recall */
.recall{margin-top:18px;border-top:1px solid var(--border);padding-top:16px}
.recall-head{display:flex;align-items:center;gap:9px;font-size:12px;font-weight:680;
 letter-spacing:.07em;text-transform:uppercase;color:var(--text-2);margin-bottom:12px}
.recall-head .badge{background:var(--surface-2);border:1px solid var(--border);border-radius:99px;
 padding:1px 8px;font-size:11px;color:var(--text-3);letter-spacing:.02em}
.q{border:1px solid var(--border);border-radius:12px;background:var(--surface);
 margin-bottom:10px;overflow:hidden;box-shadow:var(--shadow)}
.q-top{padding:13px 15px;display:flex;gap:11px;align-items:flex-start}
.q-state{flex:0 0 auto;width:9px;height:9px;border-radius:99px;background:var(--border-strong);margin-top:8px}
.q-state.b1{background:var(--bad)} .q-state.b2{background:var(--warn)}
.q-state.b3{background:var(--accent)} .q-state.b4,.q-state.b5{background:var(--good)}
.q-body{flex:1;min-width:0}
.q-kind{font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--text-3);
 font-weight:660;margin-bottom:3px}
.q-prompt{font-size:17px;font-weight:560;line-height:1.45}
.q-actions{padding:0 15px 13px;display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.reveal-btn{border:1px solid var(--accent-line);background:var(--accent-soft);color:var(--accent);
 font:inherit;font-size:13.5px;font-weight:600;padding:7px 15px;border-radius:8px;cursor:pointer}
.reveal-btn:hover{background:var(--accent);color:#fff}
.answer{display:none;padding:0 15px 14px}
.answer.show{display:block;animation:fade .18s ease}
@keyframes fade{from{opacity:0;transform:translateY(-3px)}to{opacity:1;transform:none}}
.answer-box{background:var(--surface-2);border:1px solid var(--border);border-radius:10px;
 padding:13px 15px;font-size:.92em}
.answer-box p{margin:0 0 9px}.answer-box p:last-child{margin:0}
.grade{display:flex;gap:7px;margin-top:11px}
.grade button{flex:1;border:1px solid var(--border);background:var(--surface);font:inherit;
 font-size:13px;font-weight:580;padding:8px;border-radius:8px;cursor:pointer;color:var(--text-2)}
.grade .missed:hover{background:var(--bad-soft);border-color:var(--bad);color:var(--bad)}
.grade .shaky:hover{background:var(--warn-soft);border-color:var(--warn);color:var(--warn)}
.grade .got:hover{background:var(--good-soft);border-color:var(--good);color:var(--good)}
.q-note{font-size:12px;color:var(--text-3);margin-left:auto}

/* skim mode: fast orientation -- a small summary + key terms only */
body.skim .block{display:none}
body.skim .recall{display:none}
body.skim .summary{font-size:16.5px;margin:6px 0 10px}
body.skim .topic{margin-bottom:22px}
body.skim .topic-head{margin-top:22px}
.skim-note{display:none}
body.skim .skim-note{display:block;font-size:13px;color:var(--text-3);margin:0 0 12px;letter-spacing:.01em}

/* review mode */
body.review .layout{display:block;max-width:760px}
body.review .toc,body.review #stream{display:none}
#review{display:none}
body.review #review{display:block}
.rev-empty{text-align:center;padding:70px 20px;color:var(--text-2)}
.rev-empty h2{font-size:24px;color:var(--text);margin:0 0 8px}
.rev-progress{display:flex;align-items:center;gap:12px;margin:6px 0 26px;font-size:13px;color:var(--text-2)}
.rev-progress .track{flex:1;height:7px;border-radius:99px;background:var(--surface-3);overflow:hidden}
.rev-progress .fill{height:100%;background:var(--accent);width:0%;transition:width .25s ease}
.rev-card{border:1px solid var(--border);border-radius:16px;background:var(--surface);
 box-shadow:var(--shadow);padding:26px}
.rev-meta{display:flex;gap:9px;align-items:center;font-size:11px;letter-spacing:.07em;
 text-transform:uppercase;color:var(--text-3);font-weight:660;margin-bottom:14px}
.rev-from{color:var(--accent)}
.rev-q{font-size:1.3em;line-height:1.38;font-weight:600;margin-bottom:18px}
.rev-hint{font-size:.82em;color:var(--text-3);margin:12px 0 4px}
.opts{margin-top:2px}
.opt{display:flex;gap:12px;align-items:flex-start;width:100%;text-align:left;font:inherit;
 font-size:1.02em;line-height:1.4;border:1.5px solid var(--border);background:var(--surface);
 color:var(--text);border-radius:11px;padding:13px 15px;margin-bottom:10px;cursor:pointer}
.opt:hover{border-color:var(--accent-line);background:var(--accent-soft)}
.opt .mark{flex:0 0 auto;width:28px;height:28px;border-radius:7px;display:grid;place-items:center;
 background:var(--surface-2);border:1.5px solid var(--border-strong);font-weight:700;font-size:.8em;color:var(--text-2)}
.opt-text{padding-top:3px}
.opt.sel{border-color:var(--accent);background:var(--accent-soft)}
.opt.sel .mark{background:var(--accent);border-color:var(--accent);color:#fff}
.opt.locked{cursor:default}
.opt.correct{border-color:var(--good);background:var(--good-soft)}
.opt.correct .mark{background:var(--good);border-color:var(--good);color:#fff}
.opt.wrong{border-color:var(--bad);background:var(--bad-soft)}
.opt.wrong .mark{background:var(--bad);border-color:var(--bad);color:#fff}
.verdict{font-weight:700;font-size:1.05em;margin:0 0 12px;padding:11px 14px;border-radius:10px}
.verdict.ok{color:var(--good);background:var(--good-soft)}
.verdict.no{color:var(--bad);background:var(--bad-soft)}
.next-btn{margin-top:14px}
.rev-card .answer{padding:0;margin-top:18px}
.rev-card .reveal-btn{width:100%;padding:13px;font-size:16px}

/* exam mode: the practice certification exam in its own tab, with a score counter */
#exam{display:none}
body.exam .layout{display:block;max-width:880px}
body.exam .toc,body.exam #stream,body.exam #review{display:none}
body.exam #exam{display:block}
.exam-bar{display:flex;align-items:center;gap:16px;flex-wrap:wrap;
 background:var(--surface);border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow);
 padding:13px 18px;margin:0 0 16px}
.exam-stat{display:flex;flex-direction:column;line-height:1.05}
.exam-stat b{font-size:22px;font-weight:730;letter-spacing:-.02em}
.exam-stat span{font-size:10px;text-transform:uppercase;letter-spacing:.09em;color:var(--text-3);font-weight:680}
.exam-stat.ok b{color:var(--good)}
.exam-bar .track{flex:1;min-width:110px;height:8px;border-radius:99px;background:var(--surface-3);overflow:hidden}
.exam-bar .track .fill{height:100%;background:var(--good);width:0%;transition:width .25s ease}
.exam-meta{font-size:12.5px;color:var(--text-2);font-weight:580}
.exam-reset{border:1px solid var(--border);background:var(--surface);color:var(--text-2);font:inherit;
 font-size:12px;font-weight:600;padding:7px 13px;border-radius:8px;cursor:pointer}
.exam-reset:hover{border-color:var(--bad);color:var(--bad)}
.exam-grid{display:flex;flex-wrap:wrap;gap:5px;margin:0 0 20px}
.exam-cell{width:31px;height:28px;border-radius:7px;border:1px solid var(--border);background:var(--surface);
 font:inherit;font-size:12px;font-weight:600;color:var(--text-2);cursor:pointer;display:grid;place-items:center;padding:0}
.exam-cell:hover{border-color:var(--accent-line);color:var(--text)}
.exam-cell.ok{background:var(--good-soft);border-color:var(--good);color:var(--good)}
.exam-cell.no{background:var(--bad-soft);border-color:var(--bad);color:var(--bad)}
.exam-cell.cur{outline:2px solid var(--accent);outline-offset:1px}
.exam-nav{display:flex;gap:10px;margin-top:18px}
.exam-nav button{flex:1;border:1px solid var(--border);background:var(--surface);color:var(--text);
 font:inherit;font-size:14px;font-weight:580;padding:11px;border-radius:10px;cursor:pointer}
.exam-nav button:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}
.exam-nav button:disabled{opacity:.4;cursor:default}

/* tooltip */
#tip{position:fixed;z-index:200;max-width:300px;background:var(--text);color:var(--bg);
 font-size:13px;line-height:1.5;padding:9px 12px;border-radius:9px;box-shadow:var(--shadow);
 display:none;pointer-events:none}
#tip b{color:var(--bg);display:block;margin-bottom:2px;font-size:13.5px}

.empty{color:var(--text-3);text-align:center;padding:60px 0}
@media (max-width:880px){
 .layout{grid-template-columns:1fr;gap:0}
 .toc{display:none}
 .search input{width:120px}
 .brand b{max-width:38vw}
}
@media print{
 .topbar,.toc,.q-actions,.grade,#review{display:none!important}
 body{font-size:12pt}.layout{display:block;padding:0}
 .answer{display:block!important}.q{break-inside:avoid}
}

/* accessibility + readability */
.skip{position:absolute;left:-9999px;top:0;background:var(--accent);color:#fff;
 padding:8px 14px;border-radius:0 0 8px 0;z-index:100;text-decoration:none;font-weight:600}
.skip:focus{left:0}
[hidden]{display:none!important}
.opt:focus-visible,.term-chip:focus-visible,.reveal-btn:focus-visible,
.iconbtn:focus-visible,.modeswitch button:focus-visible,#search:focus-visible{
 outline:2px solid var(--accent);outline-offset:2px}
.block.prose p{margin:0 0 .72em}
.block li{margin:0 0 .45em}



/* ---- static site chrome (added on top of the guide's stylesheet) ---- */
body{font-size:18px}
.diagnostic-cta{box-shadow:0 8px 24px rgba(59,47,214,.16)}
.diagnostic-page{max-width:900px}
.diagnostic-hero{padding-bottom:12px}
.trust-note{color:var(--text-3);font-size:.88rem;max-width:70ch}
.diagnostic-card{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:clamp(22px,4vw,42px);margin:10px 0 44px;box-shadow:0 18px 55px rgba(28,25,75,.08)}
.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}
.diagnostic-progress{color:var(--text-2);font-size:.9rem}.diagnostic-progress>div{display:flex;align-items:center;gap:18px}.diagnostic-progress .track{flex:1}
.diagnostic-domain{color:var(--accent);font-size:.8rem;font-weight:750;letter-spacing:.04em;text-transform:uppercase;margin:30px 0 6px}
.diagnostic-card h2{font-size:clamp(1.25rem,3vw,1.7rem);line-height:1.3;margin:0 0 22px}
.diagnostic-options{display:grid;gap:10px;margin:0;padding:0;border:0}.diagnostic-option{position:relative;display:flex;gap:14px;align-items:flex-start;width:100%;text-align:left;border:1px solid var(--border);background:var(--surface);color:var(--text);padding:15px 16px;border-radius:12px;font:inherit;cursor:pointer}.diagnostic-option:hover,.diagnostic-option.selected,.diagnostic-option:has(input:checked){border-color:var(--accent);background:var(--accent-soft)}.diagnostic-option input{position:absolute;opacity:0;inline-size:1px;block-size:1px}.diagnostic-option .mark{display:grid;place-items:center;min-width:26px;height:26px;border:1px solid var(--border-strong);border-radius:50%;font-size:.8rem;font-weight:750}.diagnostic-option input:checked+.mark{background:var(--accent);border-color:var(--accent);color:#fff}.diagnostic-option input:focus-visible+.mark{outline:3px solid var(--accent-line);outline-offset:3px}
.diagnostic-nav,.diagnostic-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}.diagnostic-nav [data-next]{margin-left:auto}
.flow-status{min-height:1.4em;margin:16px 0 0;color:var(--text-3);font-size:.88rem}
.diagnostic-score{display:flex;align-items:baseline;gap:14px;margin:10px 0 20px}.diagnostic-score b{font-size:clamp(3rem,10vw,5.2rem);line-height:1;color:var(--accent)}.diagnostic-score span{color:var(--text-2)}
.domain-result{margin:16px 0}.domain-result>div{display:flex;justify-content:space-between;gap:20px;font-size:.93rem;margin-bottom:6px}.domain-result .track{display:block}
.study-plan{background:var(--surface-2);border-radius:14px;padding:20px;margin-top:28px}.study-plan h2{margin-top:0}.study-plan label{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-weight:650}.study-plan input{width:80px;border:1px solid var(--border);border-radius:8px;background:var(--surface);color:var(--text);font:inherit;padding:8px}
.share-status{min-height:1.4em;color:var(--text-3);font-size:.86rem}.share-fallback{display:grid;gap:6px;margin:10px 0 0;font-size:.86rem;color:var(--text-2)}.share-fallback input{width:100%;border:1px solid var(--border-strong);border-radius:8px;background:var(--surface);color:var(--text);font:inherit;padding:9px 10px}
.readiness{display:flex;align-items:center;gap:18px;background:var(--surface-2);border:1px solid var(--border);border-radius:14px;padding:16px;margin:18px 0}.readiness div{display:grid;min-width:125px}.readiness b{font-size:1.35rem;color:var(--accent)}.readiness span,.readiness p{font-size:.82rem;color:var(--text-3)}.readiness p{margin:0}
.milestones{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0 24px}.milestone{border:1px solid var(--border);border-radius:999px;padding:7px 11px;color:var(--text-3);font-size:.78rem;font-weight:650}.milestone.done{border-color:var(--accent-line);background:var(--accent-soft);color:var(--accent)}
.site-top{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;
 gap:16px;padding:12px clamp(16px,4vw,40px);background:color-mix(in srgb,var(--bg) 88%,transparent);
 backdrop-filter:saturate(140%) blur(10px);border-bottom:1px solid var(--border)}
.site-brand{font-weight:730;letter-spacing:-.01em;text-decoration:none;color:var(--text);font-size:17px}
.site-brand span{color:var(--text-3);font-weight:600}
.site-nav{display:flex;align-items:center;gap:18px}
.site-nav a{color:var(--text-2);text-decoration:none;font-size:14px;font-weight:560}
.site-nav a:hover{color:var(--accent)}
.site-cross{border:1px solid var(--border-strong);border-radius:999px;padding:4px 10px;color:var(--text-3) !important;font-size:12.5px !important}
.site-cross:hover{border-color:var(--accent);color:var(--accent) !important}
.acct{display:inline-flex;align-items:center;gap:8px}
.acct-email{font-size:12.5px;color:var(--text-2);font-weight:560;max-width:160px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.acct-out,.acct-in{border:1px solid var(--border);background:var(--surface);color:var(--text-2);font:inherit;font-size:12.5px;font-weight:600;padding:5px 11px;border-radius:8px;cursor:pointer}
.acct-out:hover,.acct-in:hover{border-color:var(--accent-line);color:var(--accent)}
.acct-in{background:var(--accent);border-color:var(--accent);color:#fff}
.acct-in:hover{color:#fff;filter:brightness(1.05)}
.acct-email{text-decoration:none}
.acct-email:hover{color:var(--accent)}
/* ---- mobile / small screens ---- */
@media (max-width:720px){
 .site-top{flex-wrap:wrap;gap:8px 12px;padding:10px 16px}
 .site-brand{font-size:15px;line-height:1.15}
 .site-brand span{display:none}
 .site-nav{gap:10px 14px;flex-wrap:wrap;font-size:13px}
 .site-nav a{font-size:13px}
 .site-cross{padding:3px 9px;font-size:11.5px !important}
 .acct{gap:6px}
 .acct-email{max-width:38vw;font-size:12px}
 .acct-out,.acct-in{padding:5px 9px;font-size:12px}
 .site-main{padding-left:16px;padding-right:16px}
 .hero h1{font-size:1.7rem}
 .legal{padding-left:2px;padding-right:2px}
 .legal .founder-photo{float:none;display:block;width:120px;height:120px;margin:4px 0 16px 0}
 .topic-head{flex-direction:column;align-items:flex-start;gap:3px}
 .topic-head .sec{order:-1}
 .topic-nav{flex-direction:column;gap:10px}
 .topic-nav .tn{max-width:100%}
 .topic-nav .next{text-align:left;margin-left:0}
}
@media (max-width:420px){
 .site-nav{gap:8px 12px}
 .acct-email{max-width:32vw}
}
/* never let anything force a horizontal scroll on phones */
html,body{overflow-x:hidden}
img,table,pre{max-width:100%}
@media (max-width:720px){ .legal:not(.cram) table{display:block;overflow-x:auto} }
/* /account dashboard */
.acct-loading{color:var(--text-3);padding:50px 0;text-align:center}
.acct-mail{margin:4px 0 0;color:var(--text-3);font-size:13.5px}
.acct-badge{font-size:12px;font-weight:680;color:var(--good);background:var(--good-soft);border:1px solid var(--good);border-radius:99px;padding:4px 11px;white-space:nowrap}
.acct-badge.muted{color:var(--text-3);background:var(--surface-2);border-color:var(--border)}
.account-section{margin:52px 0 0;padding-top:25px;border-top:1px solid var(--border)}
.account-section-head{display:flex;align-items:baseline;justify-content:space-between;gap:18px;margin:0 0 14px}
.account-section-head h2{font-size:1.25rem;line-height:1.2;letter-spacing:-.02em;margin:0}
.account-section-head p{margin:0;color:var(--text-3);font-size:.88rem}
.cert-rows{display:flex;flex-direction:column;margin-top:4px}
.cert-row{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:16px;padding:15px 0;border-top:1px solid var(--border);text-decoration:none;color:var(--text);transition:color .12s ease,background .12s ease}
.cert-row:hover{color:var(--accent)}
.cert-row.cur{color:var(--accent)}
.cr-name b{font-weight:730}
.cr-d{color:var(--text-3);font-size:13px;display:block}
.cr-tag{display:inline-block;font-size:11px;font-weight:700;color:var(--accent);margin-top:3px}
.cr-prog{font-size:13.5px;color:var(--text-2);white-space:nowrap;text-align:right}
.cr-prog.muted{color:var(--text-3)}
.acct-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin:24px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.acct-stats>div{min-width:0;padding:13px 18px 13px 0;border-right:1px solid var(--border)}
.acct-stats>div+div{padding-left:18px}.acct-stats>div:last-child{border-right:0}
.acct-stats dt{color:var(--text-3);font-size:.75rem;letter-spacing:.05em;text-transform:uppercase;font-weight:680}
.acct-stats dd{margin:3px 0 0;font-size:1.28rem;line-height:1.2;font-weight:740;letter-spacing:-.025em}.acct-stats .ok dd{color:var(--good)}
.acct-bars{display:grid;gap:14px;margin:0 0 22px}
.acct-bar-top{display:flex;justify-content:space-between;font-size:13px;margin:0 0 5px}
.acct-bar-top span:first-child{font-weight:600}
.acct-bar-top span:last-child{color:var(--text-3)}
.acct-bar .track{height:8px;border-radius:99px;background:var(--surface-3);overflow:hidden}
.acct-bar .fill{display:block;height:100%;background:var(--accent)}
.acct-reset{border:0;border-bottom:1px solid currentColor;background:transparent;color:var(--text-3);font:inherit;font-weight:600;font-size:13.5px;padding:2px 0;cursor:pointer}
.acct-reset:hover{color:var(--bad)}
@media (max-width:620px){.account-section-head{align-items:flex-start;flex-direction:column;gap:5px}.cert-row{grid-template-columns:1fr;gap:4px}.cr-prog{text-align:left}.acct-stats{grid-template-columns:1fr}.acct-stats>div{padding:12px 0;border-right:0;border-bottom:1px solid var(--border)}.acct-stats>div+div{padding-left:0}.acct-stats>div:last-child{border-bottom:0}}
.site-main{max-width:78ch;margin:0 auto;padding:34px clamp(16px,4vw,40px) 90px}
.crumbs{font-size:12.5px;color:var(--text-3);margin:0 0 18px}
.site-main a:not(.btn):not(.unlock-btn){text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.crumbs a{color:var(--text-2);text-decoration:underline;text-underline-offset:3px}.crumbs a:hover{color:var(--accent)}
.crumbs span{margin:0 6px;color:var(--border-strong)}
.hero{margin:10px 0 36px}
.hero .eyebrow{font-size:12px;text-transform:uppercase;letter-spacing:.1em;color:var(--accent);font-weight:680;margin:0 0 8px}
.hero h1{font-size:clamp(30px,5vw,46px);line-height:1.05;letter-spacing:-.025em;margin:0 0 14px;font-weight:740}
.hero .lede{font-size:19px;color:var(--text-2);line-height:1.55;margin:0 0 22px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-block;border:1px solid var(--border);background:var(--surface);color:var(--text);
 text-decoration:none;font-weight:600;font-size:15px;padding:12px 20px;border-radius:11px}
.btn:hover{border-color:var(--accent-line)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.grp{margin:0 0 34px}
.grp h2{font-size:13px;text-transform:uppercase;letter-spacing:.09em;color:var(--text-3);font-weight:700;
 border-bottom:1px solid var(--border);padding-bottom:8px;margin:0 0 12px}
.grp-list{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.grp-list a{display:block;text-decoration:none;color:var(--text);padding:9px 12px;border-radius:9px;border:1px solid transparent}
.grp-list a:hover{background:var(--surface-2);border-color:var(--border)}
.grp-list b{font-weight:600}
.grp-list small{display:block;color:var(--text-3);font-size:11px;letter-spacing:.05em;text-transform:uppercase;margin-top:2px}
.site-main .topic-head{margin:0 0 8px}
.site-main .topic h1{font-size:clamp(26px,4vw,36px);line-height:1.1;letter-spacing:-.02em;font-weight:730;margin:0}
.review-note{margin:18px 0 22px;padding:14px 16px;border:1px solid var(--border);border-radius:12px;background:var(--surface-2);color:var(--text-2);font-size:13px;line-height:1.55}
.review-note p{margin:0}.review-note p+p{margin-top:5px}.review-note a{color:var(--accent)}
.pillar-cta{margin:18px 0 22px;padding:14px 16px;border-left:3px solid var(--accent);background:var(--surface-2);color:var(--text-2);font-size:14px;line-height:1.55}
.pillar-cta p{margin:0}.pillar-cta a{color:var(--accent);font-weight:700}
.topic-nav{display:flex;justify-content:space-between;gap:14px;margin:34px 0 0;border-top:1px solid var(--border);padding-top:18px}
.topic-nav .tn{max-width:46%;text-decoration:none;color:var(--text-2);font-size:14px;font-weight:560}
.topic-nav .tn:hover{color:var(--accent)}
.topic-nav .next{text-align:right;margin-left:auto}
.paywall{margin:30px 0 0;border:1px solid var(--accent-line);background:var(--accent-soft);
 border-radius:16px;padding:26px;text-align:center}
.paywall.standalone{margin-top:24px}
.pw-lock{font-size:30px;margin-bottom:6px}
.paywall h2{font-size:21px;margin:0 0 8px;font-weight:700;letter-spacing:-.01em}
.paywall p{color:var(--text-2);margin:0 0 16px;font-size:15.5px;line-height:1.55}
.unlock-btn{border:0;background:var(--accent);color:#fff;font:inherit;font-weight:680;font-size:16px;
 padding:13px 26px;border-radius:12px;cursor:pointer}
.unlock-btn:hover{filter:brightness(1.06)}
.pw-sub{font-size:13px;color:var(--text-3);margin:14px 0 0}
.pw-ok{background:var(--good-soft);color:var(--good);border:1px solid var(--good);border-radius:10px;
 padding:10px 14px;font-weight:600;font-size:14px;margin:0 0 16px;text-align:center}
/* login / sign-up modal */
.auth-overlay{position:fixed;inset:0;z-index:1000;background:rgba(15,16,20,.55);display:grid;place-items:center;padding:20px}
.auth-box{background:var(--surface);border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow);width:100%;max-width:400px;padding:28px 26px;position:relative}
.auth-x{position:absolute;top:12px;right:14px;border:0;background:none;font-size:24px;line-height:1;color:var(--text-3);cursor:pointer}
.auth-box h2{font-size:21px;margin:0 0 6px;font-weight:700}
.auth-sub{font-size:13.5px;color:var(--text-2);margin:0 0 18px}
.auth-provs{display:grid;gap:9px;margin:0 0 4px}
.auth-prov{display:flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--border-strong);background:var(--surface);color:var(--text);font:inherit;font-weight:600;font-size:14.5px;padding:11px;border-radius:10px;cursor:pointer}
.auth-prov:hover{background:var(--surface-2)}
.auth-or{display:flex;align-items:center;gap:10px;color:var(--text-3);font-size:12px;margin:14px 0}
.auth-or:before,.auth-or:after{content:"";flex:1;height:1px;background:var(--border)}
.auth-form{display:grid;gap:12px}.auth-field{display:grid;gap:5px}.auth-field label{color:var(--text-2);font-size:13px;font-weight:650}.auth-field small{color:var(--text-3);font-size:12px}
.auth-form input{border:1px solid var(--border-strong);background:var(--surface);color:var(--text);font:inherit;font-size:15px;padding:12px 13px;border-radius:10px;width:100%}
.auth-form input:focus{outline:2px solid var(--accent-line);outline-offset:1px}
.auth-err{color:var(--bad);background:var(--bad-soft);border-radius:8px;padding:8px 11px;font-size:13px;margin:0}
.auth-submit{border:0;background:var(--accent);color:#fff;font:inherit;font-weight:680;font-size:15px;padding:12px;border-radius:10px;cursor:pointer}
.auth-submit:hover{filter:brightness(1.06)}
.auth-submit:disabled{opacity:.6;cursor:default}
.auth-toggle{border:0;background:none;color:var(--accent);font:inherit;font-weight:560;font-size:13.5px;cursor:pointer;padding:4px;margin-top:2px}
.auth-links{display:flex;flex-wrap:wrap;gap:4px 14px;justify-content:center}
.auth-form input[readonly]{background:var(--surface-2);color:var(--text-2)}
.auth-form #auth-code{font-size:22px;letter-spacing:.35em;text-align:center;font-variant-numeric:tabular-nums}
.auth-fine{margin:4px 0 0;font-size:12px;color:var(--text-3);text-align:center}
.auth-prov[data-prov="google"]{background:var(--accent);color:#fff;border-color:var(--accent);font-size:15.5px;padding:13px}
.auth-prov[data-prov="google"]:hover{filter:brightness(1.06);background:var(--accent)}
.auth-prov[data-prov="google"]:before{content:"";width:18px;height:18px;border-radius:50%;background:#fff url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 48 48'><path fill='%23EA4335' d='M24 9.5c3.5 0 6.6 1.2 9.1 3.6l6.8-6.8C35.8 2.4 30.3 0 24 0 14.6 0 6.5 5.4 2.6 13.3l7.9 6.1C12.4 13.6 17.7 9.5 24 9.5z'/><path fill='%234285F4' d='M46.5 24.5c0-1.6-.1-3.1-.4-4.5H24v9h12.7c-.5 2.9-2.2 5.4-4.7 7.1l7.6 5.9c4.4-4.1 6.9-10.1 6.9-17.5z'/><path fill='%23FBBC05' d='M10.5 28.6c-.5-1.4-.8-3-.8-4.6s.3-3.2.8-4.6l-7.9-6.1C1 16.4 0 20.1 0 24s1 7.6 2.6 10.7l7.9-6.1z'/><path fill='%2334A853' d='M24 48c6.3 0 11.7-2.1 15.6-5.7l-7.6-5.9c-2.1 1.4-4.8 2.3-8 2.3-6.3 0-11.6-4.1-13.5-9.8l-7.9 6.1C6.5 42.6 14.6 48 24 48z'/></svg>") center/12px no-repeat}
.linklike{border:0;background:none;color:var(--accent);font:inherit;font-weight:600;cursor:pointer;padding:0;text-decoration:underline}
.site-foot{border-top:1px solid var(--border);padding:26px clamp(16px,4vw,40px);max-width:78ch;margin:0 auto;
 color:var(--text-3);font-size:13px;line-height:1.6}
.foot-links{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:12px}
.foot-links a{color:var(--text-2);text-decoration:none;font-weight:560}
.foot-links a:hover{color:var(--accent)}
.foot-fine{font-size:12px;color:var(--text-3);margin-top:10px}
.foot-fine a{color:var(--text-3)}
/* standalone legal / about pages */
.legal{max-width:72ch;margin:0 auto;padding:8px 0 40px}
.legal h1{font-size:1.9rem;margin:.2em 0 .5em}
.legal h2{font-size:1.2rem;margin:1.6em 0 .4em}
.legal p,.legal li{color:var(--text-2)}
.legal ul{padding-left:1.2em}
.legal a{color:var(--accent)}
.legal table{width:100%;border-collapse:collapse;margin:1em 0;font-size:.95em}
.legal th,.legal td{border:1px solid var(--border);padding:8px 10px;text-align:left;vertical-align:top}
.legal .lede{font-size:1.05rem;color:var(--text-2)}
/* cram sheet: a scannable revision page */
.cram{max-width:76ch}
.cram h2{font-size:1.25rem;margin:1.9em 0 .5em;padding-top:.7em;border-top:2px solid var(--border)}
.cram h2:first-of-type{border-top:none;padding-top:0}
.cram p,.cram li,.cram td,.cram dd{line-height:1.6}
.cram table{font-size:1rem}
.cram thead th{background:var(--surface-2);font-size:.78rem;text-transform:uppercase;letter-spacing:.04em;color:var(--text-3)}
.cram tbody tr:nth-child(even){background:var(--surface-2)}
.cram td:first-child{font-weight:700}
.cram dl{margin:.4em 0}
.cram dt{font-weight:700;margin-top:.8em}
.cram dd{margin:.1em 0 0;color:var(--text-2)}
.cram details.faq-q{margin:.45em 0}
@media (max-width:720px){
 .cram table,.cram tbody,.cram tr,.cram td{display:block;width:auto}
 .cram thead{display:none}
 .cram tbody tr{border:1px solid var(--border);border-radius:12px;padding:12px 14px;margin:0 0 12px;background:var(--surface) !important}
 .cram td{border:none;padding:3px 0;white-space:normal}
 .cram td:first-child{font-size:1.12rem;color:var(--accent);margin-bottom:6px;white-space:normal}
 .cram td:not(:first-child)::before{content:attr(data-label) ": ";font-weight:600;color:var(--text-3)}
}
.founder-photo{float:right;width:140px;height:140px;object-fit:cover;border-radius:14px;
 margin:0 0 14px 18px;border:1px solid var(--border)}
.btn-linkedin{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;
 padding:9px 16px;border-radius:10px;font-weight:600;font-size:14px}
/* homepage hubs */
.hub{margin:0 0 22px}
.hub h3{font-size:17px;margin:0 0 8px;font-weight:680}
.hub h3 a{color:var(--text);text-decoration:none}
.hub h3 a:hover{color:var(--accent)}
.hub-n{display:inline-block;margin-left:8px;font-size:11px;font-weight:700;color:var(--text-3);
 background:var(--surface-2);border:1px solid var(--border);border-radius:99px;padding:1px 8px;vertical-align:middle}
.hub-list{list-style:none;margin:0;padding:0 0 0 2px;display:grid;gap:3px}
.hub-list a{color:var(--text-2);text-decoration:none;font-size:14.5px;padding:4px 8px;border-radius:7px;display:block}
.hub-list a:hover{background:var(--surface-2);color:var(--accent)}
/* related topics (internal links) */
.related{margin:34px 0 0;border-top:1px solid var(--border);padding-top:20px}
.related h2{font-size:13px;text-transform:uppercase;letter-spacing:.08em;color:var(--text-3);font-weight:700;margin:0 0 12px}
.related ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:6px}
.related a{color:var(--text-2);text-decoration:none;font-size:14.5px;padding:7px 10px;border:1px solid var(--border);border-radius:9px;display:block}
.related a:hover{border-color:var(--accent-line);color:var(--accent)}
.related-hub{margin:14px 0 0}
.related-hub a{color:var(--accent);text-decoration:none;font-weight:600;font-size:14px}
/* FAQ accordion */
.faq{margin:30px 0 0;border-top:1px solid var(--border);padding-top:18px}
.faq>h2{font-size:13px;text-transform:uppercase;letter-spacing:.08em;color:var(--text-3);font-weight:700;margin:0 0 12px}
.faq-q{border:1px solid var(--border);border-radius:10px;margin:0 0 8px;background:var(--surface);overflow:hidden}
.faq-q summary{cursor:pointer;font-weight:600;padding:12px 14px;font-size:15.5px;list-style:none}
.faq-q summary::-webkit-details-marker{display:none}
.faq-q summary:hover{color:var(--accent)}
 .faq-q[open] summary{border-bottom:1px solid var(--border)}
 .faq-q>div{padding:12px 14px;color:var(--text-2);font-size:15px;line-height:1.6}
 @media (max-width:560px){.related ul{grid-template-columns:1fr}}
 /* shared conversion journey */
 a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--accent-line);outline-offset:3px}
 .quiet-cta{display:inline-block;padding:12px 2px;color:var(--text-2);font-weight:620;text-decoration:underline;text-underline-offset:4px}
 .quiet-cta:hover{color:var(--accent)}
 .more-practice{margin:0 0 42px;padding:24px 0 28px;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
 .more-practice h2{font-size:1.45rem;letter-spacing:-.02em;margin:0 0 8px}
 .more-practice>p:not(.eyebrow){max-width:62ch;color:var(--text-2);margin:0 0 16px}
 .secondary-actions .btn{font-size:14px;padding:10px 14px}
 .offer-page{max-width:900px}
 .offer-hero{margin-bottom:26px}
 .offer-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:0 0 28px}
 .offer-grid article{border-top:2px solid var(--accent);padding:18px 18px 8px;background:var(--surface-2)}
 .offer-grid h2{font-size:1.05rem;margin:0 0 8px}.offer-grid p{margin:0;color:var(--text-2);line-height:1.55}
 .offer-proof{margin:0 0 28px;padding:26px;background:var(--surface-2);border:1px solid var(--border);border-radius:16px}.offer-proof h2{font-size:clamp(1.18rem,2.5vw,1.5rem);line-height:1.32;margin:0 0 18px}.proof-answer-grid{list-style:none;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;padding:0;margin:0 0 18px;counter-reset:none}.proof-answer-grid li{display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:10px;padding:12px;border:1px solid var(--border);border-radius:10px;color:var(--text-2);font-size:.94rem}.proof-answer-grid li>span{display:grid;place-items:center;width:24px;height:24px;border:1px solid var(--border-strong);border-radius:50%;font-weight:700;font-size:.75rem}.proof-answer-grid li.is-correct{border-color:var(--good);background:var(--good-soft);color:var(--text)}.proof-answer-grid .proof-answer{grid-column:2;color:var(--good);font-size:.78rem}.proof-explanation{border-left:3px solid var(--accent);padding:14px 16px;background:var(--surface);color:var(--text-2)}.proof-explanation .eyebrow{margin:0 0 6px}.proof-explanation p{margin:0}.proof-explanation p+p{margin-top:8px}
 .offer-steps{margin:0 0 28px;padding:0}.offer-steps ol{list-style:none;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;padding:0;margin:0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.offer-steps li{display:grid;gap:4px;padding:16px 18px 16px 0;border-right:1px solid var(--border);color:var(--text-2)}.offer-steps li+li{padding-left:18px}.offer-steps li:last-child{border-right:0}.offer-steps strong{color:var(--text)}.offer-steps span{font-size:.88rem;line-height:1.45}
 .offer-decision{border:1px solid var(--accent-line);background:var(--accent-soft);padding:28px;border-radius:16px}
 .offer-decision h2{font-size:1.65rem;margin:0 0 8px}.offer-decision>p{max-width:62ch;color:var(--text-2)}
 .offer-decision .purchase-facts{font-size:.86rem;margin:18px 0 0}.unlock-btn{display:inline-block;text-decoration:none}
 .offer-evidence{margin:22px 0 0;padding-top:16px;border-top:1px solid var(--accent-line);max-width:68ch;color:var(--text-2);font-size:.84rem;line-height:1.55}.offer-evidence p{margin:0}.offer-evidence p+p{margin-top:5px}.offer-evidence a{color:var(--accent)}
 .checkout-status{margin:14px 0 0;color:var(--danger,#a12b22);font-weight:650}
 .site-main.account-main{max-width:960px;padding-top:52px}
 .cockpit{max-width:none;margin:0}
 .cockpit-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding-bottom:24px;border-bottom:1px solid var(--border)}
 .cockpit h1{font-size:clamp(2rem,4.2vw,3rem);line-height:1.04;letter-spacing:-.035em;margin:0 0 4px}
 .cockpit-empty{max-width:620px;padding:34px 0}.cockpit-empty p:not(.eyebrow){max-width:58ch;color:var(--text-2)}
 .cockpit-guidance{margin:28px 0 16px;font-size:1.04rem;color:var(--text-2)}.cockpit-guidance strong{color:var(--accent)}
 .cockpit-next{border-left:3px solid var(--accent);background:var(--surface-2);padding:24px 26px;margin:0}
 .cockpit-next .eyebrow{font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:var(--text-3);font-weight:700;margin:0 0 8px}
 .cockpit-next h2{font-size:clamp(1.25rem,2.4vw,1.6rem);line-height:1.2;letter-spacing:-.02em;margin:0 0 7px}.cockpit-next p:not(.eyebrow){max-width:56ch;margin:0;color:var(--text-2)}
 .cockpit-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:20px}.btn.quiet{background:transparent;color:var(--text-2);white-space:nowrap}.btn.quiet:hover{border-color:var(--accent);color:var(--accent)}
 .cockpit-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin:28px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
 .cockpit-stats>div{min-width:0;padding:14px 18px 14px 0;border-right:1px solid var(--border)}.cockpit-stats>div+div{padding-left:18px}.cockpit-stats>div:last-child{border-right:0}
 .cockpit-stats dt{color:var(--text-3);font-size:.75rem;font-weight:680;text-transform:uppercase;letter-spacing:.05em}.cockpit-stats dd{margin:3px 0 0;font-size:1.38rem;line-height:1.2;font-weight:740;letter-spacing:-.025em}
 .cockpit-route{margin:0}.cockpit-route h2{font-size:1.12rem;letter-spacing:-.01em;margin:0 0 8px}.cockpit-route ul{list-style:none;padding:0;margin:0}.cockpit-route li{display:flex;align-items:center;justify-content:space-between;gap:18px;border-top:1px solid var(--border);padding:13px 0;color:var(--text-2)}.cockpit-route li:last-child{border-bottom:1px solid var(--border)}.cockpit-route li b{flex:0 0 auto;color:var(--accent);font-size:1.05rem}
 .practice-note{margin:28px 0 0;padding:16px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);color:var(--text-2);font-size:.9rem}.practice-note p{margin:0}.practice-note a{color:var(--accent);font-weight:650}.practice-note strong{color:var(--text)}
 .question-progress .readiness{display:grid;grid-template-columns:auto minmax(0,1fr);align-items:start;gap:16px;margin:0 0 20px;padding:0;background:transparent;border:0;border-radius:0}.question-progress .readiness div{display:grid;min-width:142px}.question-progress .readiness b{font-size:1.25rem;color:var(--accent)}.question-progress .readiness span,.question-progress .readiness p{font-size:.86rem;color:var(--text-3)}.question-progress .readiness p{margin:0;max-width:62ch}
 .milestones{display:flex;gap:0;flex-wrap:wrap;margin:0 0 22px;padding:10px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.milestone{border:0;border-radius:0;padding:4px 14px 4px 0;color:var(--text-3);font-size:.8rem;font-weight:650}.milestone.done{background:transparent;color:var(--good)}
 .exam-status{min-height:1.35em;margin:12px 0;color:var(--text-3);font-size:.87rem}.exam-bar .track[role="progressbar"]{display:block}.exam-grid .exam-cell[aria-current="step"]{outline:3px solid var(--accent-line);outline-offset:1px}.rev-card .rev-q{margin:0 0 18px}.opts{display:grid;gap:10px;margin:0;padding:0;border:0}.quiz-option{position:relative;display:flex;align-items:flex-start;gap:12px;border:1px solid var(--border);border-radius:11px;background:var(--surface);padding:13px 14px;cursor:pointer;color:var(--text);text-align:left}.quiz-option:hover{border-color:var(--accent-line)}.quiz-option input{position:absolute;opacity:0;inline-size:1px;block-size:1px}.quiz-option .mark{display:grid;place-items:center;flex:0 0 26px;width:26px;height:26px;border:1px solid var(--border-strong);border-radius:50%;font-size:.8rem;font-weight:750}.quiz-option input:checked+.mark{background:var(--accent);border-color:var(--accent);color:#fff}.quiz-option input:focus-visible+.mark{outline:3px solid var(--accent-line);outline-offset:3px}.quiz-option.correct{border-color:var(--good);background:var(--good-soft)}.quiz-option.wrong{border-color:var(--bad);background:var(--bad-soft)}.quiz-option[aria-disabled="true"]{cursor:default}.quiz-answer-note{display:block;margin-top:3px;color:var(--text-3);font-size:.8rem}.exam-question-heading{font-size:clamp(1.15rem,2.4vw,1.48rem);font-weight:700;line-height:1.34}.account-loading{max-width:620px;padding:34px 0;color:var(--text-2)}.account-loading h1{font-size:clamp(1.6rem,3vw,2rem);letter-spacing:-.02em;margin:0 0 8px}.account-loading p{max-width:58ch}.checkout-pending{border-top:3px solid var(--accent);border-bottom:1px solid var(--border)}.checkout-pending a{color:var(--accent);font-weight:700}.account-retry{margin-top:8px}
 @media (max-width:680px){.site-main.account-main{padding-top:28px}.cockpit-head{padding-bottom:18px}.cockpit-next{padding:20px}.cockpit-actions{width:100%}.cockpit-actions .btn{width:100%;text-align:center}.cockpit-stats{grid-template-columns:1fr}.cockpit-stats>div{padding:12px 0;border-right:0;border-bottom:1px solid var(--border)}.cockpit-stats>div+div{padding-left:0}.cockpit-stats>div:last-child{border-bottom:0}.question-progress .readiness{grid-template-columns:1fr;gap:6px}.offer-grid,.proof-answer-grid,.offer-steps ol{grid-template-columns:1fr}.offer-steps li,.offer-steps li+li{padding:14px 0;border-right:0;border-bottom:1px solid var(--border)}.offer-steps li:last-child{border-bottom:0}.offer-decision,.diagnostic-card,.offer-proof{padding:20px}.diagnostic-actions .btn{width:100%;text-align:center}.site-nav{gap:8px 11px}}
/* Editorial Study Desk. White, direct and shared by every guide. */
:root{
 --bg:#fff;--surface:#fff;--surface-2:#f5f6f8;--surface-3:#e7e9ed;
 --border:#cfd3d8;--border-strong:#7e858f;
 --text:#101114;--text-2:#34373d;--text-3:#555b64;
 --accent:#2638b8;--accent-soft:#eef0ff;--accent-line:#5364d9;
 --good:#176b36;--good-soft:#e9f5ed;--warn:#80510b;--warn-soft:#fff5dc;
 --bad:#a12f25;--bad-soft:#faeae7;--danger:#a12f25;
 --shadow:none;--radius:4px;
 --sans:Arial,Helvetica,sans-serif
}
h1{font-weight:700;letter-spacing:-.015em}
h2{font-weight:700;letter-spacing:-.01em}
.site-brand .brand-mark{display:block;font-size:11px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--text-3);font-family:var(--sans);line-height:1;margin-bottom:3px}
html[data-theme="dark"]{
 --bg:#111318;--surface:#111318;--surface-2:#1d2027;--surface-3:#292d36;
 --border:#464b56;--border-strong:#7b828f;--text:#f7f7f8;--text-2:#d4d6da;
 --text-3:#adb1b9;--accent:#aab5ff;--accent-soft:#242c5b;--accent-line:#93a0f5;
 --good:#85d19c;--good-soft:#183a25;--warn:#efc66f;--warn-soft:#463513;
 --bad:#f2a098;--bad-soft:#48231f;--danger:#f2a098;--shadow:none
}
body{background:var(--bg);font-family:var(--sans);font-size:17px;line-height:1.62;letter-spacing:0}
button,input,select,textarea{font-family:inherit}
.site-top{position:sticky;top:0;z-index:50;display:block;padding:0;background:var(--surface);border-bottom:1px solid var(--border);backdrop-filter:none}
.site-top-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;max-width:1340px;margin:0 auto;padding:17px clamp(22px,4vw,52px)}
.site-brand{display:block;min-width:max-content;color:var(--text);font-size:19px;font-weight:750;letter-spacing:-.02em;text-decoration:none}
.site-nav{display:flex;align-items:center;justify-content:flex-end;gap:24px}
.site-nav a,.acct-in,.acct-out{border:0;border-radius:0;background:transparent;color:var(--text-2);font-size:14px;font-weight:600;line-height:1.25;padding:5px 0;text-decoration:none}
.site-nav a:hover,.acct-in:hover,.acct-out:hover{background:transparent;color:var(--accent);filter:none;text-decoration:underline;text-underline-offset:5px}
.site-nav .site-offer-link{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:9px 12px;border:1px solid var(--accent);background:var(--accent);color:#fff;font-weight:700;text-decoration:none}
.site-nav .site-offer-link:hover{border-color:#1d2b91;background:#1d2b91;color:#fff;text-decoration:none}
.acct{display:inline-flex;align-items:center;gap:14px}
.acct-email{max-width:190px;overflow:hidden;color:var(--text-2);font-size:13px;font-weight:600;text-overflow:ellipsis;white-space:nowrap}
.acct-in{color:var(--accent);cursor:pointer}
.acct-out{cursor:pointer}
.site-main{max-width:960px;margin:0 auto;padding:48px clamp(22px,4vw,52px) 96px}
.site-main>*,.topic{max-width:760px}
.home-main{max-width:1340px;padding-top:0}
.home-main>*,.offer-page>*,.site-main.account-main>*{max-width:none}
.offer-page,.site-main.account-main{max-width:1080px}
.crumbs{margin-bottom:26px;color:var(--text-3);font-size:13px;letter-spacing:0;text-transform:none}
.hero{margin:0 0 44px}
.hero .eyebrow{margin:0 0 9px;color:var(--accent);font-size:14px;font-weight:700;letter-spacing:0;text-transform:none}
.hero h1{max-width:19ch;margin:0 0 18px;font-size:clamp(2.35rem,4.5vw,3.8rem);font-weight:750;letter-spacing:-.045em;line-height:1.02}
.hero .lede{max-width:62ch;margin:0 0 24px;color:var(--text-2);font-size:1.12rem;line-height:1.58}
.hero-cta{display:flex;align-items:center;gap:24px;flex-wrap:wrap}
.btn,.unlock-btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;border:1px solid var(--border-strong);border-radius:0;box-shadow:none;background:var(--surface);color:var(--text);font-size:15px;font-weight:700;line-height:1.25;padding:11px 18px;text-decoration:none}
.btn:hover{border-color:var(--accent);color:var(--accent)}
.btn.primary,.unlock-btn{border-color:var(--accent);background:var(--accent);color:#fff}
.btn.primary:hover,.unlock-btn:hover{background:#1d2b91;color:#fff;filter:none}
.quiet-cta{display:inline-block;padding:8px 0;color:var(--accent);font-size:15px;font-weight:650;text-decoration:underline;text-underline-offset:5px}
.quiet-cta:hover{color:var(--text)}
.diagnostic-cta{box-shadow:none}
.home-intro{display:grid;grid-template-columns:minmax(0,2.15fr) minmax(280px,1fr);gap:64px;padding:58px 0 34px;border-bottom:3px solid var(--text)}
.home-intro .hero{align-self:center;margin:0;padding:10px 0 26px}
.home-intro .hero h1{max-width:20ch}
.home-steps{align-self:stretch;border-left:1px solid var(--border);padding:8px 0 8px 42px}
.home-steps h2{margin:0 0 20px;font-size:1.45rem;letter-spacing:-.025em}
.home-steps ol{display:grid;gap:22px;list-style:none;margin:0;padding:0}
.home-steps li{display:grid;grid-template-columns:42px minmax(0,1fr);gap:14px;align-items:start}
.step-number{display:grid;width:38px;height:38px;place-items:center;border:1px solid var(--accent);border-radius:50%;color:var(--text);font-weight:700;line-height:1}
.home-steps strong,.home-steps small{display:block}
.home-steps strong{margin:1px 0 2px;font-size:1rem}
.home-steps small{max-width:28ch;color:var(--text-2);font-size:.9rem;line-height:1.45}
.more-practice{max-width:none;margin:0 0 28px;padding:19px 0 28px;border-bottom:1px solid var(--border)}
.more-practice h2{margin:0 0 14px;font-size:1.3rem;letter-spacing:-.025em}
.secondary-actions{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.secondary-actions .btn{min-height:52px;border-color:var(--border);background:var(--surface);padding:15px 16px}
.secondary-actions .btn:hover{border-color:var(--accent);background:var(--surface-2)}
.home-resources{display:flex;gap:14px;align-items:baseline;margin-top:16px;color:var(--text-3);font-size:.88rem}
.home-resources>span{font-weight:700;color:var(--text)}
.home-resources ul{display:flex;gap:8px 16px;flex-wrap:wrap;list-style:none;margin:0;padding:0}
.home-resources a{color:var(--accent);text-underline-offset:4px}
.home-library{display:grid;grid-template-columns:minmax(0,2fr) minmax(280px,.95fr);gap:58px;padding-top:8px}
.home-section-title,.featured-explainers>h2{margin:0 0 14px;font-size:1.45rem;letter-spacing:-.025em}
.home-guide-column{min-width:0}
.featured-explainers{align-self:start;position:sticky;top:92px}
.featured-explainers .grp-list{border-top:1px solid var(--border)}
.featured-explainers .grp-list a{padding:12px 0;border:0;border-bottom:1px solid var(--border);border-radius:0}
.featured-explainers .grp-list a:hover{background:transparent;color:var(--accent)}
.featured-explainers .grp-list b{font-weight:650}
.featured-explainers .grp-list small{margin-top:4px;color:var(--text-3);font-size:13px;letter-spacing:0;line-height:1.45;text-transform:none}
.grp{margin:0 0 36px}
.grp h2{margin:0;padding:11px 0;border-bottom:2px solid var(--text);color:var(--text);font-size:1rem;font-weight:700;letter-spacing:0;text-transform:none}
.hub{margin:0;padding:0;border:0;border-bottom:1px solid var(--border)}
.hub summary{cursor:pointer;padding:15px 2px;font-size:1rem;font-weight:650;line-height:1.35}
.hub summary:hover{color:var(--accent)}
.hub-n{float:right;margin-left:18px;border:0;border-radius:0;background:transparent;color:var(--accent);font-size:.86rem;font-weight:650}
.hub-overview{margin:0 0 7px;padding-left:20px;font-size:.88rem}
.hub-overview a{color:var(--accent);font-weight:650}
.hub-list{display:grid;gap:0;margin:0;padding:0 0 12px 20px}
.hub-list a{margin:0;padding:7px 8px;border:0;border-left:2px solid transparent;border-radius:0}
.hub-list a:hover{border-left-color:var(--accent);background:var(--surface-2);color:var(--accent)}
.grp-list{gap:0}
.grp-list a{border-radius:0}
.grp-list small{letter-spacing:0;text-transform:none}
.topic-head{border-top:2px solid var(--text);padding-top:18px}
.site-main .topic h1{font-size:clamp(2rem,4vw,3.15rem);line-height:1.06}
.summary{border-left:3px solid var(--accent);padding-left:16px}
.terms{gap:6px}
.term-chip{border-color:var(--border-strong);border-radius:0;padding:5px 8px;font-size:.78rem;text-transform:none}
.term-chip:hover{background:var(--surface-2)}
.review-note,.pillar-cta{border-radius:0;box-shadow:none}
.review-note{border-width:1px 0;background:transparent;padding:14px 0}
.pillar-cta{border-left:3px solid var(--accent);background:transparent;padding:10px 0 10px 15px}
.cippus-study-context h2{margin:0 0 6px;font-size:1rem;letter-spacing:0}.cippus-study-context p{margin:0}
.pillar-journey{margin:30px 0 0;padding:18px 0;border-top:2px solid var(--text);border-bottom:1px solid var(--border)}.pillar-journey h2{margin:0 0 10px;font-size:1.12rem}.pillar-journey ul{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:0;padding:0;list-style:none}.pillar-journey a{display:block;padding:8px 0;color:var(--accent);font-weight:700}.glossary-study-help{margin:26px 0;padding:16px 0;border-top:2px solid var(--text);border-bottom:1px solid var(--border)}.glossary-study-help h2{margin:0 0 8px;font-size:1.12rem}.glossary-study-help p{margin:0;color:var(--text-2)}
.block{margin-bottom:26px}
.callout,.map,table,.faq-q{border-radius:0;box-shadow:none}
.callout{padding:16px 18px}
.map{padding:18px}
.map-root,.map-children span{border-radius:0}
.faq-q{margin:0;border-width:0 0 1px;background:transparent}
.faq-q summary{padding:13px 0}
.faq-q>div{padding:0 0 15px}
.related{border-top:2px solid var(--text)}
.related ul{gap:0}
.related a{padding:11px 0;border:0;border-bottom:1px solid var(--border);border-radius:0}
.topic-nav .tn{display:grid;gap:2px}
.topic-nav .tn>span{color:var(--text-3);font-size:12px;letter-spacing:0;text-transform:none}
.diagnostic-page{max-width:840px}
.diagnostic-hero{padding-bottom:0}
.diagnostic-card,.offer-proof,.offer-decision,.paywall{border-radius:0;box-shadow:none}
.diagnostic-card{margin-bottom:44px;padding:clamp(22px,4vw,40px);border-width:2px 1px 1px;border-color:var(--text) var(--border) var(--border);background:var(--surface)}
.diagnostic-start-card{display:grid;gap:8px;align-items:start}
.diagnostic-start-note{margin:0;color:var(--text);font-size:1.05rem;font-weight:700}
.diagnostic-start-detail{max-width:54ch;margin:0 0 10px;color:var(--text-2);font-size:.95rem}
.diagnostic-start-card .diagnostic-start{justify-self:start}
.diagnostic-option,.quiz-option{border-radius:0;padding:14px 15px}
.diagnostic-option .mark,.quiz-option .mark{border-radius:50%}
.study-plan{margin-top:28px;padding:20px 0;border-top:1px solid var(--border-strong);border-radius:0;background:transparent}
.diagnostic-score b{font-size:clamp(3.6rem,10vw,6rem)}
.flow-status{border-top:1px solid var(--border);padding-top:12px}
.track,.acct-bar .track{border-radius:0}
.fill,.acct-bar .fill{background:var(--accent)}
.paywall{padding:27px;border:2px solid var(--text);background:var(--surface);text-align:left}
.paywall.standalone{max-width:680px}
.paywall-kicker{color:var(--accent)!important;font-size:13px!important;font-weight:700;letter-spacing:0;text-transform:none}
.paywall h2{font-size:1.45rem}
.pw-sub{border-top:1px solid var(--border);padding-top:12px}
.offer-grid{gap:0;border-top:2px solid var(--text);border-bottom:1px solid var(--border)}
.offer-grid article{padding:18px 18px 18px 0;border:0;border-right:1px solid var(--border);background:transparent}
.offer-grid article+article{padding-left:18px}
.offer-grid article:nth-child(2n){border-right:0}
.offer-grid article:nth-child(n+3){border-top:1px solid var(--border)}
.offer-proof{padding:27px;border:1px solid var(--border);border-top:2px solid var(--text);background:var(--surface)}
.proof-answer-grid li,.proof-answer-grid li>span{border-radius:0}
.proof-answer-grid li{background:transparent}
.proof-explanation{background:transparent}
.offer-decision{padding:29px;border:2px solid var(--accent);background:var(--accent-soft)}
.offer-steps ol{border-top:2px solid var(--text)}
.account-content,.cockpit{max-width:100%}
.cockpit-head{border-bottom:2px solid var(--text)}
.cockpit-next{margin:0;padding:20px 0 20px 18px;border-left:4px solid var(--accent);background:transparent}
.cockpit-stats,.acct-stats{border-top:2px solid var(--text)}
.cockpit-stats>div,.acct-stats>div{padding-top:15px}
.cockpit-route li{padding:14px 0}
.practice-note{border-top:2px solid var(--text)}
.question-progress .readiness{border-top:1px solid var(--border);padding-top:16px}
.milestones{border-radius:0}
.milestone{padding:4px 12px 4px 0;border-radius:0}
.milestone.done{color:var(--good)}
.account-loading{padding:25px 0;border-top:2px solid var(--text);text-align:left}
.auth-overlay{background:rgba(10,12,16,.76)}
.auth-box{max-width:440px;border:2px solid var(--text);border-radius:0;box-shadow:none}
.auth-x,.auth-prov,.auth-form input,.auth-submit{border-radius:0}
.auth-x{padding:6px 9px;border-bottom:1px solid var(--border);border-left:1px solid var(--border)}
.auth-submit{background:var(--accent)}
.site-foot{max-width:1340px;margin:0 auto;padding:27px clamp(22px,4vw,52px) 48px;border-top:2px solid var(--text);font-size:13px}
.foot-links{display:flex;gap:0;align-items:center;flex-wrap:wrap}
.foot-links a,.foot-links .theme-switch{margin:0;padding:3px 12px;border:0;border-left:1px solid var(--border);border-radius:0;background:transparent;color:var(--text-2);font:inherit;text-decoration:none}
.foot-links a:first-child{padding-left:0;border-left:0}
.foot-links a:hover,.foot-links .theme-switch:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px}
.foot-links .theme-switch{cursor:pointer}
.nav-toggle{display:none;border:1px solid var(--border-strong);border-radius:0;background:var(--surface);color:var(--text);font:inherit;font-size:14px;font-weight:700;padding:8px 10px;cursor:pointer}
.nav-toggle-icon{display:inline-block;width:16px;height:10px;margin-left:8px;border-top:2px solid currentColor;border-bottom:2px solid currentColor;position:relative}
.nav-toggle-icon:after{content:"";position:absolute;left:0;right:0;top:3px;border-top:2px solid currentColor}
.article-byline{margin:10px 0 22px;color:var(--text-3);font-size:.88rem;line-height:1.5}
.article-byline a{color:var(--text);font-weight:700}
.article-sources{margin:38px 0 24px;padding:20px 0;border-top:2px solid var(--text);border-bottom:1px solid var(--border)}
.article-sources h2{margin:0 0 8px;font-size:1.12rem;letter-spacing:-.01em}
.article-sources p{margin:0;color:var(--text-2);font-size:.92rem}
.article-sources ul{margin:12px 0 0;padding-left:20px}.article-sources li{margin:5px 0}.article-sources a{color:var(--accent)}
.pillar-search-section{margin:32px 0;padding:24px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.pillar-search-section>h2{margin:0 0 10px;font-size:1.35rem}.pillar-search-section h3{margin:22px 0 7px;font-size:1rem}.pillar-search-section p{max-width:72ch;color:var(--text-2)}
.pillar-search-section>p strong{color:var(--text)}.pillar-search-section ul{padding-left:20px}.pillar-search-section li{margin:6px 0}.pillar-search-section a{color:var(--accent)}
.pillar-search-section table{margin:20px 0}.topic-search-answer{margin:24px 0 30px;padding:20px 0;border-top:2px solid var(--text);border-bottom:1px solid var(--border)}
.topic-search-answer h2{margin:0 0 8px;font-size:1.15rem}.topic-search-answer h2:not(:first-child){margin-top:22px}.topic-search-answer p{max-width:72ch;color:var(--text-2)}.topic-search-answer p strong{color:var(--text)}
.glossary-index{margin:30px 0;border-top:2px solid var(--text)}.glossary-index>div{display:grid;grid-template-columns:minmax(150px,.7fr) minmax(0,1.8fr);gap:24px;padding:14px 0;border-bottom:1px solid var(--border)}.glossary-index dt{font-weight:700}.glossary-index dd{margin:0;color:var(--text-2)}
.policy-version{margin:0 0 28px;padding:12px 0;border-top:2px solid var(--text);border-bottom:1px solid var(--border);color:var(--text-2);font-size:.9rem}
.offer-summary-layout{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(260px,.85fr);grid-template-areas:"cap summary";gap:48px;align-items:start;margin:0 0 42px;padding:0 0 36px;border-bottom:1px solid var(--border)}
.offer-summary{grid-area:summary;position:sticky;top:88px;padding:20px;border:2px solid var(--text);background:var(--surface)}
.offer-summary p{margin:0 0 12px;color:var(--text-2);font-size:.92rem}.offer-summary p:last-child{margin-bottom:0}
.offer-price{display:grid;gap:1px;padding:14px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.offer-price strong{color:var(--text);font-size:2rem;line-height:1}.offer-price span{color:var(--text-3);font-size:.82rem}
.offer-access-steps{display:grid;gap:10px;list-style:none;margin:18px 0;padding:0}.offer-access-steps li{display:grid;gap:2px;padding:10px 0;border-bottom:1px solid var(--border)}.offer-access-steps strong{color:var(--text);font-size:.9rem}.offer-access-steps span{color:var(--text-2);font-size:.84rem;line-height:1.4}
.offer-capabilities{grid-area:cap;border-top:2px solid var(--text)}
.offer-capabilities article{display:grid;grid-template-columns:minmax(150px,.65fr) minmax(0,1.35fr);gap:24px;padding:18px 0;border-bottom:1px solid var(--border)}
.offer-capabilities h2{margin:0;font-size:1.05rem;line-height:1.35}.offer-capabilities p{margin:0;color:var(--text-2);line-height:1.55}
.offer-decision{max-width:680px;margin:36px auto 0}.offer-decision h2{max-width:28ch}
.offer-evidence{margin-top:20px;padding-top:16px;border-top:1px solid var(--border);font-size:.88rem}.offer-evidence p{margin:0 0 6px}.offer-evidence a{color:var(--accent)}
.pillar-tool{margin:42px 0;padding:24px 0;border-top:2px solid var(--text);border-bottom:1px solid var(--border)}
.pillar-tool>h2{margin:0 0 8px}.pillar-tool>p{max-width:72ch;color:var(--text-2)}
.pillar-tool fieldset{margin:20px 0;padding:18px;border:1px solid var(--border-strong)}
.pillar-tool legend{max-width:72ch;padding:0 8px;font-weight:700;line-height:1.45}
.checklist-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 24px}
.checklist-grid label,.timed-option{display:flex;gap:10px;align-items:flex-start;padding:12px 0;border-bottom:1px solid var(--border);cursor:pointer}
.checklist-grid input,.timed-option input{flex:0 0 auto;width:18px;height:18px;margin:2px 0 0;accent-color:var(--accent)}
.tool-status,.tool-note{font-size:.9rem}.tool-status{min-height:1.4em;color:var(--text)}
.schedule-form,.review-worksheet{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:20px 0}
.schedule-form label,.review-worksheet label{display:grid;gap:7px;color:var(--text);font-size:.9rem;font-weight:700}
.schedule-form input,.review-worksheet input,.review-worksheet textarea{width:100%;min-height:44px;padding:10px 11px;border:1px solid var(--border-strong);border-radius:0;background:var(--surface);color:var(--text);font:inherit}
.review-worksheet textarea{min-height:92px;resize:vertical}.schedule-form .btn,.review-worksheet .btn{align-self:end;justify-self:start}
.tool-result{margin:18px 0 0;padding:16px;border-left:3px solid var(--accent);background:var(--accent-soft)}.tool-result ul{margin-bottom:0}
.tool-timer{margin:0 0 16px;padding:10px 0;border-bottom:1px solid var(--border);font-weight:700;font-variant-numeric:tabular-nums}
.timed-options{display:grid;gap:0}.timed-sample form[hidden],.timed-sample [hidden]{display:none}
.table-scroll{overflow-x:auto}.pillar-tool table{min-width:560px}
.account-privacy-actions{margin-top:38px;padding-top:22px;border-top:2px solid var(--text)}
.account-privacy-actions h2{margin:0 0 8px;font-size:1.15rem}.account-privacy-actions p{max-width:66ch;color:var(--text-2)}
.account-action-row{display:flex;gap:12px;flex-wrap:wrap}.account-action-row button{min-height:44px}
.danger-action{border-color:var(--bad);color:var(--bad)}.danger-action:hover{background:var(--bad-soft);color:var(--bad)}
.account-action-status{min-height:1.4em;color:var(--text-2);font-size:.9rem}
/* Offer page: hero + sticky purchase card, checklist, author, FAQ */
.offer-top{grid-template-areas:"cap summary";grid-template-columns:minmax(0,1.6fr) minmax(280px,.9fr)}
.offer-top .offer-hero{grid-area:cap;margin:0;padding:0}
.offer-top .offer-hero h1{max-width:18ch}
.offer-checklist{list-style:none;margin:20px 0 0;padding:0;display:grid;gap:9px;max-width:60ch}
.offer-checklist li{position:relative;padding-left:28px;color:var(--text);line-height:1.45}
.offer-checklist li:before{content:"";position:absolute;left:0;top:.35em;width:16px;height:16px;border:2px solid var(--accent);border-radius:50%;background:var(--accent-soft)}
.offer-checklist li:after{content:"";position:absolute;left:5px;top:.45em;width:5px;height:9px;border:solid var(--accent);border-width:0 2px 2px 0;transform:rotate(45deg)}
.offer-card .offer-price{border-top:0;padding-top:0}
.offer-card .unlock-btn{width:100%;text-align:center;font-size:1.05rem;padding:15px 18px;margin:4px 0 14px}
.offer-card .offer-reassure{font-size:.86rem;color:var(--text-2);line-height:1.5}
.offer-card .offer-fine{font-size:.78rem;color:var(--text-3);line-height:1.45}
.offer-card .pw-sub{margin:10px 0 0;font-size:.86rem}
.offer-detail{margin:0 0 36px}
.offer-author{display:grid;grid-template-columns:72px minmax(0,1fr);gap:20px;align-items:start;margin:0 0 36px;padding:22px 0;border-top:2px solid var(--text);border-bottom:1px solid var(--border)}
.offer-author-photo{width:72px;height:72px;border-radius:50%;object-fit:cover}
.offer-author h2{margin:0 0 6px;font-size:1.1rem}.offer-author p{margin:0;color:var(--text-2);line-height:1.55;max-width:70ch}.offer-author a{color:var(--accent)}
.offer-faq{margin:0 0 12px}.offer-faq h2{margin:0 0 10px;font-size:1.35rem;letter-spacing:-.02em}
.offer-faq-item{border-top:1px solid var(--border)}.offer-faq-item:last-of-type{border-bottom:1px solid var(--border)}
.offer-faq-item summary{cursor:pointer;padding:14px 0;font-weight:650;list-style:none;display:flex;justify-content:space-between;gap:16px}
.offer-faq-item summary::-webkit-details-marker{display:none}
.offer-faq-item summary:after{content:"+";color:var(--text-3);font-weight:400;flex:0 0 auto}
.offer-faq-item[open] summary:after{content:"‘2"}
.offer-faq-item p{margin:0 0 16px;color:var(--text-2);line-height:1.6;max-width:72ch}
/* Home: product strip */
.home-offer{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(240px,.8fr);gap:32px;align-items:center;margin:0 0 28px;padding:26px 0;border-bottom:1px solid var(--border)}
.home-offer h2{margin:0 0 8px;font-size:1.45rem;letter-spacing:-.025em}
.home-offer p:not(.eyebrow){margin:0;color:var(--text-2);max-width:58ch;line-height:1.55}
.home-offer-actions{display:grid;gap:10px}.home-offer-actions .btn{text-align:center;min-height:50px;padding:13px 16px}
@media (max-width:760px){
 .offer-top{display:flex;flex-direction:column}
 .offer-author{grid-template-columns:56px minmax(0,1fr);gap:14px}.offer-author-photo{width:56px;height:56px}
 .home-offer{grid-template-columns:1fr;gap:18px;padding:22px 0}
}
.eyebrow,.diagnostic-domain,.acct-stats dt,.cockpit-next .eyebrow,.cockpit-stats dt,
.cram thead th,.related h2,.faq>h2,.topic-head .sec{
 letter-spacing:0;
 text-transform:none;
}
@media (max-width:980px){
 .home-intro{grid-template-columns:1fr;gap:26px;padding-top:42px}
 .home-steps{border-top:1px solid var(--border);border-left:0;padding:24px 0 3px}
 .home-steps ol{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
 .home-steps li{grid-template-columns:38px minmax(0,1fr);gap:10px}
 .home-library{grid-template-columns:1fr;gap:36px}
 .featured-explainers{position:static;border-top:2px solid var(--text);padding-top:20px}
}
@media (max-width:760px){
 .site-top-inner{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;padding:14px 18px}
 .site-brand{align-self:center;margin:0;font-size:17px}
 .nav-toggle{display:block}
 .site-nav{grid-column:1/-1;justify-content:flex-start;gap:0;overflow:visible;padding:8px 0 0;border-top:1px solid var(--border);flex-wrap:wrap}
 .site-top.nav-ready .site-nav{display:none}
 .site-top.nav-ready .site-nav.is-open{display:grid;grid-template-columns:1fr}
 .site-nav a{padding:11px 2px;border-bottom:1px solid var(--border)}
 .site-nav a,.acct-in,.acct-out,.acct-email{flex:0 0 auto;font-size:13px}
 .site-main,.home-main{padding:30px 18px 68px}
 .home-main{padding-top:0}
 .home-intro{padding-top:34px}
 .hero{margin-bottom:34px}
 .checklist-grid,.schedule-form,.review-worksheet{grid-template-columns:1fr}
 .hero h1,.home-intro .hero h1{font-size:clamp(2.25rem,11vw,3.15rem)}
 .home-steps ol{grid-template-columns:1fr}
 .secondary-actions{grid-template-columns:1fr}
 .home-resources{display:block}.home-resources ul{margin-top:7px}
 .offer-summary-layout{display:flex;flex-direction:column;gap:24px;margin-bottom:34px;padding-bottom:28px}
 .offer-summary{position:static;order:0;width:100%}.offer-capabilities{order:1;width:100%}
 .offer-capabilities article{grid-template-columns:1fr;gap:6px;padding:16px 0}
 .glossary-index>div{grid-template-columns:1fr;gap:4px}
 .pillar-journey ul{grid-template-columns:1fr;gap:0}.pillar-journey li+li{border-top:1px solid var(--border)}.pillar-journey a{padding:11px 0}
 .proof-answer-grid,.offer-steps ol{grid-template-columns:1fr}
 .diagnostic-nav [data-next]{margin-left:0}
 .topic-nav{gap:18px}
 .topic-nav .tn{max-width:100%}
 .site-foot{padding:24px 18px 40px}
 .foot-links a,.foot-links .theme-switch{padding:3px 9px}
 .foot-links a:first-child{padding-left:0}
 .account-action-row{display:grid}.account-action-row .btn{width:100%;text-align:center}
}