/* AI Service Co: tools hub, tool pages, lessons. Tokens match the live home page (index.html :root). */
:root{--bg:#070b16;--bg2:#0b1223;--card:#10192d;--card2:#0d1527;--ink:#f4f7ff;--muted:#a7b6d2;--line:rgba(154,178,230,.18);--cyan:#55d9ff;--violet:#9f7aea;--lime:#72f1b8;--gold:#ffd166;--r:18px;--shadow:0 24px 70px rgba(0,0,0,.35)}
*{box-sizing:border-box}
html{color-scheme:dark;-webkit-text-size-adjust:100%}
body{margin:0;background:radial-gradient(900px 520px at 75% -10%,rgba(85,217,255,.11),transparent 65%),radial-gradient(700px 500px at 5% 10%,rgba(159,122,234,.10),transparent 65%),var(--bg);color:var(--ink);font:16px/1.6 Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;-webkit-font-smoothing:antialiased;overflow-wrap:anywhere}
a{color:var(--cyan);text-decoration:none}
a:hover{text-decoration:underline}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--gold);outline-offset:2px;border-radius:6px}
h1,h2,h3{line-height:1.15;letter-spacing:-.02em;margin:0}
p{margin:0 0 12px}
.wrap{width:min(1120px,calc(100% - 32px));margin:0 auto}
.wrap.narrow{width:min(760px,calc(100% - 32px))}
.skip{position:absolute;left:-9999px;top:8px;background:var(--gold);color:#111;padding:8px 12px;border-radius:8px;z-index:100}
.skip:focus{left:8px}
.top{position:sticky;top:0;z-index:40;border-bottom:1px solid var(--line);background:rgba(7,11,22,.86);backdrop-filter:blur(14px)}
.bar{min-height:64px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:900;color:var(--ink);letter-spacing:-.02em}
.brand:hover{text-decoration:none}
.orb{width:18px;height:18px;border-radius:7px;background:linear-gradient(135deg,var(--cyan),var(--violet));box-shadow:0 0 24px rgba(85,217,255,.5);flex:none}
.nav{margin-left:auto;display:flex;gap:6px;flex-wrap:wrap}
.nav a{color:var(--muted);padding:8px 10px;border-radius:10px;font-weight:700;font-size:.95rem}
.nav a:hover,.nav a[aria-current="page"]{color:var(--ink);background:rgba(85,217,255,.1);text-decoration:none}
main{padding:28px 0 56px}
.eyebrow{display:inline-block;color:var(--cyan);font-size:.76rem;font-weight:900;letter-spacing:.1em;text-transform:uppercase;margin:0 0 10px}
.page-hero,.tool-hero{padding:18px 0 22px}
.page-hero h1,.tool-hero h1{font-size:clamp(2rem,6vw,3.4rem);letter-spacing:-.04em;margin-bottom:12px}
.lede{font-size:clamp(1.05rem,2.2vw,1.22rem);color:var(--muted);max-width:760px}
.meta,.fine{color:var(--muted);font-size:.9rem}
.crumbs{font-size:.9rem;color:var(--muted);padding-top:4px}
.crumbs a{color:var(--muted)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:46px;border:0;border-radius:12px;padding:11px 16px;font:inherit;font-weight:800;cursor:pointer;text-align:center}
.btn:hover{text-decoration:none;filter:brightness(1.06)}
.btn.primary{background:linear-gradient(120deg,var(--cyan),#8be8ff);color:#04101b}
.btn.secondary{background:#111a2d;color:var(--ink);border:1px solid var(--line)}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin:14px 0 8px}
.badges{list-style:none;padding:0;margin:0 0 6px;display:flex;gap:8px;flex-wrap:wrap}
.badge{display:inline-block;font-size:.76rem;font-weight:800;border:1px solid var(--line);border-radius:999px;padding:4px 9px;color:#cdd8ee;background:rgba(11,18,35,.7)}
.badge.free{color:var(--lime);border-color:rgba(114,241,184,.32);background:rgba(114,241,184,.08)}
.badge.paid{color:var(--gold);border-color:rgba(255,209,102,.32);background:rgba(255,209,102,.07)}
.search{display:flex;flex-direction:column;gap:6px;max-width:560px;margin:18px 0 6px}
.search label{font-weight:800}
.search input{width:100%;min-height:48px;font:inherit;color:var(--ink);background:#07101f;border:1px solid var(--line);border-radius:12px;padding:10px 14px}
.search-status{color:var(--muted);font-size:.9rem;min-height:1.4em}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:6px}
.chips a{border:1px solid var(--line);border-radius:999px;padding:7px 12px;color:var(--muted);font-weight:700;font-size:.9rem}
.chips a:hover{color:#06111d;background:var(--cyan);border-color:var(--cyan);text-decoration:none}
.cat{padding:26px 0 8px;scroll-margin-top:80px}
.cat h2{font-size:1.6rem;margin-bottom:4px}
.cat-sub{color:var(--muted)}
.cards{list-style:none;padding:0;margin:14px 0 0;display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:12px}
.card{border:1px solid var(--line);border-radius:var(--r);background:linear-gradient(180deg,rgba(18,29,52,.95),rgba(11,19,35,.95));padding:16px;display:flex;flex-direction:column;gap:6px;min-width:0}
.card h3{font-size:1.06rem}
.card h3 a{color:var(--ink)}
.card p{color:var(--muted);margin:0;font-size:.95rem}
.card .open{margin-top:auto;padding-top:8px;font-weight:800}
.card.link-card a{display:flex;flex-direction:column;gap:4px;color:var(--ink)}
.card.link-card a:hover{text-decoration:none}
.card.link-card span{color:var(--muted);font-size:.93rem}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px;margin:18px 0}
.fact{border:1px solid var(--line);border-radius:var(--r);background:rgba(12,19,35,.72);padding:16px}
.fact h2{font-size:.82rem;text-transform:uppercase;letter-spacing:.09em;color:var(--cyan);margin-bottom:8px}
.fact p{color:#d3dcee;margin:0}
.embed{scroll-margin-top:84px;margin:8px 0 18px;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#050910}
.embed-bar{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;padding:10px 14px;border-bottom:1px solid var(--line);font-size:.9rem;color:var(--muted)}
.embed iframe{display:block;width:100%;height:min(82vh,900px);border:0;background:#fff}
.notice{border:1px solid rgba(114,241,184,.3);background:rgba(114,241,184,.07);border-radius:14px;padding:12px 14px;margin:12px 0 0}
.offer{margin:28px 0;padding:24px;border-radius:24px;border:1px solid rgba(159,122,234,.3);background:linear-gradient(135deg,rgba(159,122,234,.14),rgba(16,25,45,.9))}
.offer h2{font-size:clamp(1.5rem,4vw,2.1rem);margin-bottom:10px}
.offer p{color:#d3dcee;max-width:720px}
.offer .price-line{color:var(--gold);font-weight:700}
.request,.empty{margin:28px 0;padding:22px;border-radius:var(--r);border:1px dashed var(--line);background:rgba(12,19,35,.5)}
.request h2,.empty h2{font-size:1.35rem;margin-bottom:8px}
.request p,.empty p{color:var(--muted)}
.similar{margin:28px 0}
.similar h2,.lesson-links h2{font-size:1.4rem}
.lesson-links{margin:24px 0}
.lesson-links ul{padding-left:20px}
.lessons{list-style:none;padding:0;margin:8px 0;display:grid;gap:12px}
.lesson-item a{display:flex;flex-direction:column;gap:4px;border:1px solid var(--line);border-radius:var(--r);padding:18px;background:linear-gradient(180deg,rgba(18,29,52,.95),rgba(11,19,35,.95));color:var(--ink)}
.lesson-item a:hover{text-decoration:none;border-color:rgba(85,217,255,.5)}
.lesson-item .num{color:var(--cyan);font-size:.8rem;font-weight:900;text-transform:uppercase;letter-spacing:.09em}
.lesson-item strong{font-size:1.2rem}
.lesson-item span{color:var(--muted)}
.lesson section,.lesson aside{margin:22px 0}
.lesson h2{font-size:1.35rem;margin-bottom:10px}
.lesson p,.lesson li{color:#d3dcee}
.need{padding-left:20px}
.steps{list-style:none;padding:0;margin:0;display:grid;gap:12px;counter-reset:step}
.steps li{border:1px solid var(--line);border-radius:var(--r);padding:16px;background:rgba(12,19,35,.72)}
.steps .when{display:block;color:var(--cyan);font-size:.8rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase;margin-bottom:4px}
.steps h3{font-size:1.1rem;margin-bottom:6px}
.steps p{margin:0}
.try{border:1px solid rgba(85,217,255,.3);border-radius:var(--r);padding:18px;background:rgba(85,217,255,.06)}
.goal{border-left:4px solid var(--cyan);padding-left:14px}
.sources ul{padding-left:20px;font-size:.92rem}
.done-msg{color:var(--lime);font-weight:700}
.pager{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin:20px 0}
.foot{border-top:1px solid var(--line);padding:30px 0 44px;color:var(--muted);font-size:.93rem}
.foot-grid{display:grid;grid-template-columns:1fr auto;gap:18px}
.foot .brand{margin-bottom:8px}
.badge.soon{color:var(--gold);border-color:rgba(255,209,102,.32);background:rgba(255,209,102,.07)}
.card .open.soon{color:var(--gold)}
.soon-note{border:1px dashed rgba(255,209,102,.4);border-radius:14px;padding:12px 14px;margin:14px 0 8px;color:#d3dcee}
.try.soon{border-color:rgba(255,209,102,.35);background:rgba(255,209,102,.05)}
/* Full lessons (lessons.json bodyFile): the reviewed lesson page rendered inside the site layout. */
.lesson-full .intro{font-size:1.1rem;color:#d3dcee}
.lesson-full h2{margin:34px 0 10px;padding-top:12px;border-top:1px solid var(--line)}
.lesson-full h3{font-size:1.1rem;margin:22px 0 6px}
.lesson-full h4{font-size:1.05rem;margin:0}
.lesson-full ul,.lesson-full ol{padding-left:22px}
.lesson-full li{margin:4px 0}
.lesson-full .goals,.lesson-full nav[aria-labelledby="toc-h"]{border:1px solid var(--line);border-radius:14px;padding:12px 16px;margin:16px 0;background:rgba(12,19,35,.72)}
.lesson-full .goals h2,.lesson-full nav[aria-labelledby="toc-h"] h2,.lesson-full .try h2,.lesson-full .takeaway h2{margin:0 0 6px;padding:0;border:0;font-size:1rem}
.lesson-full .goals ul,.lesson-full nav ol{margin:6px 0 0}
.lesson-full .rule{border-left:4px solid var(--cyan);background:rgba(85,217,255,.06);padding:10px 14px;margin:14px 0;border-radius:0 10px 10px 0}
.lesson-full .note{border:1px solid rgba(255,209,102,.35);background:rgba(255,209,102,.06);border-radius:10px;padding:10px 14px;margin:14px 0}
.lesson-full .rule p,.lesson-full .note p,.lesson-full blockquote p{margin:0}
.lesson-full .tw{overflow-x:auto;margin:12px 0;border:1px solid var(--line);border-radius:12px}
.lesson-full table{border-collapse:collapse;width:100%;font-size:.93rem;line-height:1.4}
.lesson-full .tw table{min-width:600px}
.lesson-full caption{text-align:left;font-weight:800;padding:10px 12px 4px;color:var(--ink)}
.lesson-full th,.lesson-full td{text-align:left;vertical-align:top;padding:6px 10px;border-top:1px solid var(--line);color:#d3dcee}
.lesson-full thead th{border-top:0;color:var(--muted);font-size:.78rem;text-transform:uppercase;letter-spacing:.05em}
.lesson-full td.n,.lesson-full th.n{white-space:nowrap}
.lesson-full tr.anchor td{font-weight:800;color:var(--ink)}
.lesson-full tr.guests td{background:rgba(85,217,255,.05)}
.lesson-full tr.moved td{background:rgba(114,241,184,.08)}
.lesson-full .legend{color:var(--muted);font-size:.9rem}
.lesson-full .sheet{border:2px solid var(--ink);border-radius:12px;padding:14px 16px;margin:14px 0}
.lesson-full .sheet .ver{display:inline-block;font-weight:800;font-size:.85rem;background:rgba(85,217,255,.1);border-radius:6px;padding:2px 8px;margin:6px 0}
.lesson-full .sheet dl{display:grid;grid-template-columns:max-content minmax(0,1fr);gap:4px 14px;margin:8px 0}
.lesson-full .sheet dt{font-weight:800}
.lesson-full .sheet dd{margin:0;color:#d3dcee}
.lesson-full blockquote{margin:12px 0;padding:10px 14px;border-left:4px solid var(--line);background:rgba(12,19,35,.72);border-radius:0 10px 10px 0}
.lesson-full ul.check{list-style:none;padding-left:0}
.lesson-full ul.check li{position:relative;padding-left:30px}
.lesson-full ul.check li::before{content:"";position:absolute;left:0;top:4px;width:16px;height:16px;border:2px solid var(--muted);border-radius:3px}
.lesson-full .printable{border:1px dashed var(--line);border-radius:12px;padding:4px 16px 12px}
.lesson-full .sources p{font-size:.92rem;color:var(--muted)}
@media (max-width:600px){.lesson-full .sheet dl{grid-template-columns:1fr}.lesson-full .sheet dt{margin-top:6px}}
@media print{.top,.foot,.offer,.pager,.crumbs,.skip,[data-lesson-done]{display:none!important}body{background:#fff;color:#000}.lesson-full *,.lesson-full a{color:#000!important;background:none!important}.lesson-full .tw{overflow:visible;border:0}.lesson-full .tw table{min-width:0}.lesson-full .printable,.lesson-full .sheet,.lesson-full tr{break-inside:avoid}}
[hidden]{display:none!important}
@media (max-width:640px){.chips{flex-wrap:nowrap;overflow-x:auto;padding-bottom:6px;scrollbar-width:thin;margin-right:-16px;padding-right:16px}.chips a{flex:none}.foot-grid{grid-template-columns:1fr}.bar{padding:8px 0}.nav{margin-left:0;width:100%}.offer{padding:18px}.actions .btn{width:100%}}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}