/* What Is AI — design system. System fonts only, no external assets. */
:root{
  color-scheme:light;
  --font:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji";
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --bg:#f8f7f4;--surface:#ffffff;--surface-2:#f2f1ec;--surface-3:#e9e7e0;
  --ink:#1b1c22;--ink-2:#3f414b;--muted:#5a5d68;--line:#e4e2db;--line-2:#d5d2c8;
  --brand:#4338ca;--brand-2:#3730a3;--brand-soft:#eef0ff;--brand-line:#c9cdfb;--brand-ink:#312e81;
  --btn:#4338ca;--btn-hover:#3730a3;--btn-ink:#ffffff;
  --accent:#f59e0b;--accent-soft:#fff4dc;
  --tip:#047857;--tip-bg:#ecfbf3;--tip-line:#a7e9c9;
  --warn:#b45309;--warn-bg:#fff8eb;--warn-line:#f8d48a;
  --info:#4338ca;--info-bg:#f1f2ff;--info-line:#cfd3fb;
  --c1:#4f46e5;--c1s:#eceeff;--c2:#0f766e;--c2s:#e3f6f3;--c3:#9a4a06;--c3s:#fff1dc;--c4:#be185d;--c4s:#fde8f1;
  --shadow-sm:0 1px 2px rgba(20,20,40,.06),0 1px 1px rgba(20,20,40,.04);
  --shadow:0 1px 2px rgba(20,20,40,.05),0 8px 24px -6px rgba(30,30,70,.12);
  --shadow-lg:0 2px 4px rgba(20,20,40,.05),0 24px 48px -12px rgba(40,40,100,.22);
  --radius:18px;--radius-sm:12px;
  --header-h:68px;
  --overlay:rgba(10,12,20,.55);
}
:root[data-theme="dark"]{
  color-scheme:dark;
  --bg:#0e1015;--surface:#161921;--surface-2:#1c2029;--surface-3:#252a35;
  --ink:#eceef3;--ink-2:#c9ccd6;--muted:#a3a8b6;--line:#272b36;--line-2:#343a48;
  --brand:#a5b4fc;--brand-2:#c7d2fe;--brand-soft:#1d2140;--brand-line:#363d73;--brand-ink:#c7d2fe;
  --btn:#5b54e6;--btn-hover:#6d67f0;--btn-ink:#ffffff;
  --accent:#fbbf24;--accent-soft:#2c2414;
  --tip:#6ee7b7;--tip-bg:#11251e;--tip-line:#1f4a3b;
  --warn:#fcd34d;--warn-bg:#2a2112;--warn-line:#5a4318;
  --info:#a5b4fc;--info-bg:#1a1d36;--info-line:#343a6e;
  --c1:#a5b4fc;--c1s:#22264a;--c2:#5eead4;--c2s:#11302d;--c3:#fcd34d;--c3s:#33270f;--c4:#f9a8d4;--c4s:#3a1729;
  --shadow-sm:0 1px 2px rgba(0,0,0,.4);
  --shadow:0 1px 2px rgba(0,0,0,.35),0 10px 28px -8px rgba(0,0,0,.55);
  --shadow-lg:0 2px 4px rgba(0,0,0,.4),0 28px 56px -14px rgba(0,0,0,.7);
  --overlay:rgba(4,5,9,.72);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-padding-top:calc(var(--header-h) + 16px)}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.65;font-size:18px;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
h1,h2,h3,h4{line-height:1.2;letter-spacing:-.015em;color:var(--ink);text-wrap:balance}
p,li{text-wrap:pretty}
a{color:var(--brand);text-decoration-thickness:1.5px;text-underline-offset:.18em}
a:hover{color:var(--brand-2)}
:focus-visible{outline:3px solid var(--brand);outline-offset:3px;border-radius:6px}
img,svg{max-width:100%}
svg{flex-shrink:0}
.ic{width:1.15em;height:1.15em;vertical-align:-.2em;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.skip{position:absolute;left:-999px;top:8px;z-index:50;background:var(--surface);color:var(--ink);padding:10px 14px;border-radius:10px;box-shadow:var(--shadow);font-weight:700}
.skip:focus{left:12px}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 82%,transparent);-webkit-backdrop-filter:saturate(1.6) blur(14px);backdrop-filter:saturate(1.6) blur(14px);border-bottom:1px solid var(--line)}
.site-header .in{max-width:1320px;margin:0 auto;padding:0 20px;min-height:var(--header-h);display:flex;align-items:center;gap:20px}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);text-decoration:none;font-size:1.12rem;letter-spacing:-.02em}
.logo:hover{color:var(--ink)}
.logo svg{width:34px;height:34px;border-radius:10px;box-shadow:0 4px 12px -4px rgba(67,56,202,.55)}
.site-nav{display:flex;align-items:center;gap:4px;margin-left:auto;font-size:.95rem}
.site-nav a{text-decoration:none;color:var(--ink-2);font-weight:600;padding:8px 12px;border-radius:999px;transition:background .15s,color .15s}
.site-nav a:hover{background:var(--surface-2);color:var(--ink)}
.site-nav a[aria-current]{color:var(--brand);background:var(--brand-soft)}
.site-nav .nav-cta{background:var(--btn);color:var(--btn-ink);margin-left:6px;padding:9px 16px}
.site-nav .nav-cta:hover{background:var(--btn-hover);color:var(--btn-ink)}
.progress{position:fixed;left:0;right:0;top:0;height:4px;z-index:30;pointer-events:none;display:none}
.js .progress{display:block}
.progress span{display:block;height:100%;background:linear-gradient(90deg,#6366f1,#a855f7 60%,#f59e0b);transform-origin:0 50%;transform:scaleX(0)}
/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:12px 20px;border-radius:999px;background:var(--btn);color:var(--btn-ink);text-decoration:none;font-weight:700;font-size:1rem;line-height:1.2;border:1.5px solid transparent;cursor:pointer;font-family:inherit;transition:background .15s,transform .15s,box-shadow .15s;box-shadow:0 6px 16px -8px rgba(67,56,202,.7)}
.btn:hover{background:var(--btn-hover);color:var(--btn-ink);transform:translateY(-1px)}
.btn .ic{width:1.1em;height:1.1em}
.btn.ghost{background:var(--surface);color:var(--brand);border-color:var(--brand-line);box-shadow:none}
.btn.ghost:hover{background:var(--brand-soft);color:var(--brand-2)}
.btn.lg{min-height:56px;padding:14px 26px;font-size:1.06rem}
.btn.sm{min-height:42px;padding:9px 16px;font-size:.95rem}
/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:64px 0 76px;background:
  radial-gradient(900px 480px at 85% -10%,color-mix(in srgb,#a855f7 16%,transparent),transparent 65%),
  radial-gradient(700px 520px at -5% 110%,color-mix(in srgb,#6366f1 16%,transparent),transparent 60%),
  radial-gradient(500px 300px at 55% 100%,color-mix(in srgb,#f59e0b 10%,transparent),transparent 70%),var(--bg);border-bottom:1px solid var(--line)}
.hero-in{max-width:1200px;margin:0 auto;padding:0 20px;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:48px;align-items:center}
.pill{display:inline-flex;align-items:center;gap:8px;padding:7px 14px 7px 8px;border-radius:999px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-sm);font-size:.9rem;font-weight:600;color:var(--ink-2)}
.pill b{display:inline-flex;align-items:center;gap:5px;background:var(--brand-soft);color:var(--brand);border-radius:999px;padding:3px 10px;font-size:.8rem;letter-spacing:.02em}
.hero h1{font-size:clamp(2.3rem,5.4vw,3.9rem);line-height:1.04;letter-spacing:-.035em;margin:22px 0 18px;font-weight:850}
.hero h1 .hl{background:linear-gradient(92deg,#4f46e5,#9333ea 70%);-webkit-background-clip:text;background-clip:text;color:transparent}
[data-theme="dark"] .hero h1 .hl{background-image:linear-gradient(92deg,#a5b4fc,#e9a8ff 70%)}
.hero p.sub{font-size:clamp(1.08rem,1.6vw,1.24rem);color:var(--ink-2);max-width:36em;margin:0 0 28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.trust{list-style:none;padding:0;margin:30px 0 0;display:flex;flex-wrap:wrap;gap:10px 22px;color:var(--ink-2);font-size:.95rem;font-weight:600}
.trust li{display:flex;align-items:center;gap:8px;margin:0}
.trust .ic{color:var(--tip);width:1.25em;height:1.25em}
.hero-art{position:relative}
.hero-art svg{display:block;width:100%;height:auto;max-width:560px;margin-left:auto;overflow:visible}
.hero-art text{font-family:var(--font)}
.i-blob{fill:color-mix(in srgb,#6366f1 12%,transparent)}
.i-card{fill:var(--surface);stroke:var(--line)}
.i-soft{fill:var(--surface-2)}
.i-line{fill:var(--surface-3)}
.i-brand{fill:#4f46e5}
.i-ink{fill:var(--ink)}.i-muted{fill:var(--muted)}.i-white{fill:#fff}
.i-accent{fill:#f59e0b}.i-accent-s{stroke:#f59e0b}
.i-green{fill:#10b981}.i-red{fill:#e11d48}.i-violet{fill:#a855f7}
.i-stroke{fill:none;stroke:var(--line-2);stroke-width:2;stroke-dasharray:4 6;stroke-linecap:round}
.i-shadow{filter:drop-shadow(0 18px 30px rgba(40,40,100,.18)) drop-shadow(0 2px 4px rgba(40,40,100,.06))}
[data-theme="dark"] .i-shadow{filter:drop-shadow(0 18px 30px rgba(0,0,0,.5))}[data-theme="dark"] .i-blob{fill:color-mix(in srgb,#6366f1 20%,transparent)}
@media (prefers-reduced-motion:no-preference){.float-a{animation:floaty 6s ease-in-out infinite}.float-b{animation:floaty 7s ease-in-out -2s infinite}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}}
/* ---------- Sections ---------- */
.section{padding:64px 0}
.section-head{max-width:720px;margin:0 0 32px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-weight:800;letter-spacing:.09em;text-transform:uppercase;font-size:.8rem}
.section-head h2{font-size:clamp(1.8rem,3.4vw,2.5rem);margin:8px 0 10px;letter-spacing:-.03em}
.section-head p,.intro{color:var(--ink-2);margin:0;font-size:1.08rem}
/* Learning path */
.path{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;position:relative;counter-reset:stage}
.path::before{content:"";position:absolute;left:12%;right:12%;top:46px;border-top:2px dashed var(--line-2);z-index:0}
.stage{position:relative;z-index:1;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px 18px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;margin:0}
.stage-top{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.stage-ic{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;background:var(--cs);color:var(--cc);box-shadow:0 0 0 6px var(--surface)}
.stage-ic .ic{width:26px;height:26px}
.stage-n{font-size:.78rem;font-weight:800;letter-spacing:.09em;text-transform:uppercase;color:var(--muted)}
.stage h3{font-size:1.2rem;margin:0 0 6px}
.stage>p{margin:0 0 14px;color:var(--ink-2);font-size:.95rem;line-height:1.55}
.stage ol{list-style:none;margin:auto 0 0;padding:12px 0 0;border-top:1px solid var(--line)}
.stage li{margin:0}
.stage li a{display:flex;align-items:center;gap:10px;padding:8px 6px;margin:0 -6px;border-radius:10px;text-decoration:none;color:var(--ink);font-weight:600;font-size:.95rem;line-height:1.3}
.stage li a:hover{background:var(--surface-2)}
.stage li a .n{flex:0 0 30px;height:30px;border-radius:9px;display:grid;place-items:center;background:var(--cs);color:var(--cc);font-size:.8rem;font-weight:800}
.s1{--cc:var(--c1);--cs:var(--c1s)}.s2{--cc:var(--c2);--cs:var(--c2s)}.s3{--cc:var(--c3);--cs:var(--c3s)}.s4{--cc:var(--c4);--cs:var(--c4s)}
/* ---------- Layout ---------- */
.wrap{max-width:1200px;margin:0 auto;padding:32px 20px 24px;display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:40px;align-items:start}
.wrap.single{grid-template-columns:minmax(0,1fr);max-width:860px}
main{min-width:0}
aside.sidebar{min-width:0;display:flex;flex-direction:column;gap:20px;height:100%}
.wrap.guide-layout{max-width:1400px;grid-template-columns:220px minmax(0,1fr) 300px;grid-template-areas:"toc main side";gap:40px}
.guide-layout>.toc{grid-area:toc;position:sticky;top:calc(var(--header-h) + 24px);max-height:calc(100vh - var(--header-h) - 48px);overflow:auto}
.guide-layout>main{grid-area:main}
.guide-layout>aside{grid-area:side}
/* ---------- Guide cards ---------- */
.list-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin:0 0 20px;flex-wrap:wrap}
.list-head h2{font-size:clamp(1.6rem,3vw,2.1rem);margin:6px 0 0;letter-spacing:-.03em}
.cards{display:grid;gap:20px}
.card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px;box-shadow:var(--shadow-sm);transition:box-shadow .2s,border-color .2s,transform .2s;display:grid;grid-template-columns:64px minmax(0,1fr);gap:4px 22px}
.card:hover{box-shadow:var(--shadow);border-color:var(--brand-line)}
.card-ic{grid-row:1/span 3;width:64px;height:64px;border-radius:18px;display:grid;place-items:center;background:var(--cs);color:var(--cc)}
.card-ic .ic{width:30px;height:30px;stroke-width:1.8}
.card-meta{display:flex;flex-wrap:wrap;align-items:center;gap:6px 12px;font-size:.84rem;font-weight:700;color:var(--muted)}
.card-meta .num{color:var(--cc);background:var(--cs);border-radius:999px;padding:2px 10px;letter-spacing:.04em}
.card-meta span{display:inline-flex;align-items:center;gap:5px}
.card h2,.card h3{margin:6px 0 8px;font-size:1.38rem;line-height:1.25}
.card h2 a,.card h3 a{color:var(--ink);text-decoration:none}
.card h2 a:hover,.card h3 a:hover{color:var(--brand)}
.card h2 a::after,.card h3 a::after{content:"";position:absolute;inset:0;border-radius:var(--radius)}
.card p{margin:0;color:var(--ink-2)}
.card-body{grid-column:2;min-width:0}
.takes{margin:16px 0 0;padding:14px 18px;background:var(--surface-2);border-radius:var(--radius-sm)}
.takes h4{margin:0 0 6px;font-size:.78rem;text-transform:uppercase;letter-spacing:.09em;color:var(--muted)}
.ticks{list-style:none;margin:0;padding:0}
.ticks li{position:relative;padding-left:28px;margin:6px 0;line-height:1.5}
.ticks li::before{content:"";position:absolute;left:0;top:.18em;width:19px;height:19px;border-radius:50%;background:var(--tip-bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23059669' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 12.5l4 4 8-9'/%3E%3C/svg%3E") center/12px no-repeat;border:1px solid var(--tip-line)}
.card .actions{position:relative;z-index:2;margin-top:18px;display:flex;gap:10px;flex-wrap:wrap}
.stage-group{margin:36px 0 48px}
.stage-group>h2{display:flex;align-items:center;gap:12px;font-size:1.35rem;margin:0 0 18px}
.stage-group>h2 .stage-ic{width:40px;height:40px;border-radius:12px;box-shadow:none}
.stage-group>h2 .stage-ic .ic{width:22px;height:22px}
.stage-group>h2 small{display:block;font-size:.78rem;font-weight:800;letter-spacing:.09em;text-transform:uppercase;color:var(--muted)}
/* ---------- Sidebar ---------- */
.side-box{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-sm)}
.side-box h2{font-size:1rem;margin:0 0 10px;display:flex;align-items:center;gap:8px}
.side-box h2 .ic{color:var(--brand)}
.mini-path{list-style:none;margin:0;padding:0;counter-reset:mp}
.mini-path li{margin:0;position:relative}
.mini-path a{display:flex;gap:10px;align-items:flex-start;padding:7px 8px;margin:0 -8px;border-radius:10px;text-decoration:none;color:var(--ink-2);font-size:.92rem;line-height:1.35;font-weight:600}
.mini-path a:hover{background:var(--surface-2);color:var(--ink)}
.mini-path .n{flex:0 0 26px;height:26px;border-radius:8px;display:grid;place-items:center;background:var(--surface-2);color:var(--muted);font-size:.74rem;font-weight:800}
.mini-path a[aria-current]{background:var(--brand-soft);color:var(--brand-ink)}
.mini-path a[aria-current] .n{background:var(--btn);color:#fff}
.mini-path .done .n{background:var(--tip-bg);color:var(--tip)}
.side-sticky{position:sticky;top:calc(var(--header-h) + 24px)}
/* ---------- Article (guide) ---------- */
article.guide,.page{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:44px clamp(20px,5vw,56px) 40px;box-shadow:var(--shadow-sm)}
.crumbs{font-size:.9rem;color:var(--muted);margin-bottom:18px;display:flex;flex-wrap:wrap;gap:4px 8px;align-items:center}
.crumbs a{color:var(--muted);text-decoration:none;font-weight:600}.crumbs a:hover{color:var(--brand);text-decoration:underline}
.crumbs .sep{opacity:.6}
.kicker{display:inline-flex;align-items:center;gap:8px;color:var(--cc,var(--brand));background:var(--cs,var(--brand-soft));font-weight:800;letter-spacing:.08em;text-transform:uppercase;font-size:.78rem;padding:6px 12px 6px 8px;border-radius:999px}
.kicker .ic{width:18px;height:18px}
article.guide h1,.page h1{font-size:clamp(2rem,4.4vw,2.9rem);line-height:1.1;letter-spacing:-.03em;margin:16px 0 14px;font-weight:850}
.lede{font-size:clamp(1.12rem,1.8vw,1.3rem);color:var(--ink-2);margin:0 0 22px;line-height:1.55}
.meta{display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;color:var(--muted);font-size:.92rem;font-weight:600;padding:0 0 24px;margin:0 0 28px;border-bottom:1px solid var(--line)}
.meta span{display:inline-flex;align-items:center;gap:6px}
.steps{display:inline-flex;gap:4px;align-items:center}
.steps i{display:block;width:14px;height:6px;border-radius:3px;background:var(--surface-3)}
.steps i.on{background:var(--cc,var(--brand))}
.prose{font-size:1.1rem;line-height:1.75;color:var(--ink)}
.prose>*{max-width:68ch}
.prose>.table-wrap,.prose>.ad-slot,.prose>.dl{max-width:none}
.prose p{margin:0 0 1.1em}
.prose h2{font-size:clamp(1.45rem,2.6vw,1.8rem);margin:2.1em 0 .6em;letter-spacing:-.025em;scroll-margin-top:calc(var(--header-h) + 20px)}
.prose h3{font-size:1.2rem;margin:1.6em 0 .4em}
.prose ul,.prose ol{padding-left:1.4em;margin:0 0 1.2em}
.prose li{margin-bottom:.45em;padding-left:.2em}
.prose li::marker{color:var(--brand);font-weight:700}
.prose .ticks{padding-left:0;margin:0}
.prose .ticks li{padding-left:30px}
.prose b,.prose strong{font-weight:700;color:var(--ink)}
.prose a{font-weight:600}
li{margin-bottom:4px}
.dl{display:flex;align-items:center;gap:16px;flex-wrap:wrap;background:linear-gradient(135deg,var(--brand-soft),color-mix(in srgb,var(--brand-soft) 40%,var(--surface)));border:1px solid var(--brand-line);border-radius:var(--radius);padding:16px 18px;margin:0 0 28px;font-size:1rem}
.dl .doc{width:44px;height:52px}
.dl span{flex:1 1 220px;font-weight:600;color:var(--ink)}
.dl span small{display:block;font-weight:500;color:var(--muted);font-size:.9rem}
.dl.end{margin:40px 0 0}
.summary-p{font-size:1.12rem}
.takeaways{background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;margin:8px 0 28px}
.takeaways h2{margin:0 0 10px!important;font-size:1.05rem!important;display:flex;align-items:center;gap:10px;letter-spacing:0!important}
.takeaways h2 .ic{color:var(--tip);width:22px;height:22px}
.takeaways .ticks li{font-size:1.02rem}
/* Callouts */
.box{position:relative;display:block;background:var(--info-bg);border:1px solid var(--info-line);border-left:5px solid var(--info);border-radius:14px;padding:16px 20px 16px 58px;margin:1.4em 0;font-size:1.04rem;line-height:1.65}
.box .box-ic{position:absolute;left:18px;top:16px;width:28px;height:28px;border-radius:9px;display:grid;place-items:center;background:var(--surface);color:var(--info);box-shadow:var(--shadow-sm)}
.box .box-ic .ic{width:18px;height:18px}
.box b.label{display:block;font-size:.8rem;text-transform:uppercase;letter-spacing:.09em;margin:3px 0 4px;color:var(--info);font-weight:800}
.box ul,.box ol{margin:.4em 0 0}
.box>:last-child{margin-bottom:0}
.box.tip{background:var(--tip-bg);border-color:var(--tip-line);border-left-color:var(--tip)}
.box.tip .box-ic,.box.tip b.label{color:var(--tip)}
.box.warn{background:var(--warn-bg);border-color:var(--warn-line);border-left-color:var(--warn)}
.box.warn .box-ic,.box.warn b.label{color:var(--warn)}
.box.day{background:var(--surface);border-color:var(--line);border-left-color:var(--accent)}
.box.day .box-ic{background:var(--accent-soft);color:var(--warn)}
.box.day b.label{color:var(--ink);font-size:.95rem;letter-spacing:.02em;text-transform:none}
/* Prompts */
.prompt-card{display:block;margin:12px 0 18px;border:1px solid var(--brand-line);border-radius:16px;background:var(--surface);overflow:hidden;box-shadow:var(--shadow-sm)}
.prompt-head{display:flex;align-items:center;gap:8px;padding:8px 10px 8px 14px;background:var(--brand-soft);color:var(--brand-ink);font-size:.8rem;font-weight:800;letter-spacing:.07em;text-transform:uppercase;border-bottom:1px solid var(--brand-line)}
.prompt-head .ic{width:16px;height:16px}
.prompt-head .copy{margin-left:auto;font:inherit;font-size:.78rem;letter-spacing:.04em;text-transform:none;font-weight:700;color:var(--brand);background:var(--surface);border:1px solid var(--brand-line);border-radius:999px;padding:5px 12px;min-height:32px;cursor:pointer}
.prompt-head .copy:hover{background:var(--brand);color:var(--surface)}
.prompt{display:block;white-space:pre-wrap;font-family:var(--font);font-size:1.02rem;line-height:1.6;color:var(--ink);padding:14px 16px;margin:0;background:transparent}
li .prompt-card{margin:10px 0 6px}
/* Tables */
.table-wrap{overflow-x:auto;margin:1.2em 0 1.6em;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:14px;background:var(--surface)}
table{width:100%;border-collapse:collapse;font-size:.98rem;min-width:520px;line-height:1.5}
th{background:var(--surface-2);color:var(--ink);text-align:left;padding:12px 14px;font-size:.84rem;text-transform:uppercase;letter-spacing:.06em;font-weight:800;border-bottom:1px solid var(--line-2)}
td{border-bottom:1px solid var(--line);padding:12px 14px;vertical-align:top}
tr:last-child td{border-bottom:0}
tr:nth-child(even) td{background:color-mix(in srgb,var(--surface-2) 45%,transparent)}
/* Checklists */
.check{list-style:none;padding-left:0!important}
.check li{position:relative;padding-left:34px!important}
.check li::before{content:"";position:absolute;left:0;top:.28em;width:20px;height:20px;border:2px solid var(--brand-line);border-radius:6px;background:var(--surface)}
/* TOC */
.toc{font-size:.92rem}
.toc details{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:6px 8px;box-shadow:var(--shadow-sm)}
.toc summary{cursor:pointer;list-style:none;display:flex;align-items:center;gap:8px;padding:10px 10px;font-weight:800;color:var(--ink);font-size:.95rem;border-radius:12px}
.toc summary::-webkit-details-marker{display:none}
.toc summary .ic{color:var(--brand)}
.toc summary::after{content:"";margin-left:auto;width:9px;height:9px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:rotate(45deg) translateY(-3px);transition:transform .2s}
.toc details[open] summary::after{transform:rotate(-135deg) translateY(-2px)}
.toc ol{list-style:none;margin:0;padding:2px 0 8px;border-left:2px solid var(--line);margin-left:12px}
.toc li{margin:0}
.toc a{display:block;padding:6px 10px 6px 14px;margin-left:-2px;border-left:2px solid transparent;color:var(--muted);text-decoration:none;font-weight:600;line-height:1.35}
.toc a:hover{color:var(--ink)}
.toc a[aria-current]{color:var(--brand);border-left-color:var(--brand)}
/* Pager */
.pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}
.pager a{display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;text-decoration:none;color:var(--ink);font-weight:700;line-height:1.35;box-shadow:var(--shadow-sm);transition:border-color .15s,box-shadow .15s}
.pager a:hover{border-color:var(--brand-line);box-shadow:var(--shadow);color:var(--brand)}
.pager small{display:block;color:var(--muted);font-weight:700;font-size:.82rem;text-transform:uppercase;letter-spacing:.08em;margin-bottom:4px}
.pager .next{text-align:right;grid-column:2}
/* Static pages */
.page{max-width:none}
.page h2{font-size:1.45rem;margin:1.9em 0 .5em;letter-spacing:-.02em}
.page h3{font-size:1.15rem;margin:1.4em 0 .4em}
.page p,.page li{color:var(--ink-2)}
.page ul{padding-left:1.3em}
.page li::marker{color:var(--brand)}
.page mark{background:var(--accent-soft);color:var(--ink);padding:0 .2em;border-radius:4px}
.page-ic{width:60px;height:60px;border-radius:18px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);margin-bottom:6px}
.page-ic .ic{width:30px;height:30px}
.page .btn{margin:4px 6px 4px 0}
.contact-form{max-width:580px;margin-top:8px}
.contact-form p{margin:0 0 18px}
.contact-form label{display:block;font-weight:700;margin-bottom:6px;color:var(--ink)}
.contact-form input,.contact-form select,.contact-form textarea{width:100%;min-height:50px;padding:12px 14px;border:1.5px solid var(--line-2);border-radius:12px;font:inherit;font-size:1rem;background:var(--surface);color:var(--ink);transition:border-color .15s,box-shadow .15s}
.contact-form textarea{min-height:150px;resize:vertical}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px color-mix(in srgb,var(--brand) 22%,transparent)}
.contact-form .hp{position:absolute;left:-9999px}
/* ===== AD SLOTS: replace inner placeholder with your ad code =====
   Empty slots render as a quiet, labelled panel that reserves space (prevents layout shift once ads load). */
.ad-slot{position:relative;display:flex;align-items:center;justify-content:center;margin:32px auto;border-radius:14px;background:
  repeating-linear-gradient(135deg,transparent 0 10px,color-mix(in srgb,var(--line) 45%,transparent) 10px 11px),var(--surface-2);
  border:1px solid var(--line);color:var(--muted);font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.12em;text-align:center;overflow:hidden;padding:22px 12px 12px}
.ad-slot::before{content:"Advertisement";position:absolute;top:7px;left:12px;font-size:.62rem;letter-spacing:.14em;color:var(--muted)}
.ad-slot--header{max-width:970px;min-height:90px;margin:20px auto}
.ad-wrap{max-width:1240px;margin:0 auto;padding:0 20px}
.ad-slot--in-content{min-height:250px;width:100%}
.ad-slot--sidebar{min-height:600px;width:100%;max-width:300px;margin:0}
.ad-slot--footer{max-width:970px;min-height:90px;margin:40px auto 0}
/* ================================================================ */
/* house ads (partner promos in ad slots) */
.house-ad{flex-wrap:wrap;gap:14px 22px;justify-content:space-between;text-align:left;text-transform:none;letter-spacing:normal;font-weight:400;font-size:1rem;color:var(--ink-2);padding:30px 24px 20px;background:var(--surface-2)}
.house-ad::before{content:"Sponsored \00B7  From our partners"}
.house-ad.ad-slot--header,.house-ad.ad-slot--footer{min-height:0}
.house-ad.ad-slot--in-content,.house-ad.ad-slot--sidebar{min-height:0;flex-direction:column;align-items:flex-start;justify-content:center}
.ha-txt{flex:1 1 280px;min-width:0}
.house-ad p{margin:0}
.ha-brand{font-size:.72rem;font-weight:800;text-transform:uppercase;letter-spacing:.12em;color:var(--brand)}
.ha-head{font-size:1.1rem;font-weight:700;color:var(--ink);margin:4px 0!important;line-height:1.3}
.ha-pitch{font-size:.95rem;line-height:1.5;color:var(--ink-2)}
.ha-cta{flex:none}
.house-ad.ad-slot--in-content .ha-txt,.house-ad.ad-slot--sidebar .ha-txt{flex:none;width:100%}
/* ---------- Footer ---------- */
.site-footer{background:#0f1118;color:#c3c7d2;margin-top:56px;font-size:.95rem}
.site-footer .in{max-width:1200px;margin:0 auto;padding:48px 20px 28px;display:grid;grid-template-columns:1.4fr 1fr 1fr .8fr;gap:32px}
.site-footer a{color:#e7e9ef;text-decoration:none}.site-footer a:hover{text-decoration:underline;color:#fff}
.site-footer h2{color:#fff;font-size:.82rem;text-transform:uppercase;letter-spacing:.1em;margin:0 0 14px}
.site-footer .brand h2{text-transform:none;letter-spacing:-.01em;font-size:1.15rem;display:flex;align-items:center;gap:10px}
.site-footer .brand h2 svg{width:32px;height:32px;border-radius:9px}
.site-footer .brand p{margin:0;color:#aeb3c0;max-width:30em}
.site-footer ul{list-style:none;margin:0;padding:0}.site-footer li{margin:8px 0;line-height:1.4}
.site-footer .legal{grid-column:1/-1;border-top:1px solid #262a36;padding-top:20px;margin:8px 0 0;color:#9ea3b0;font-size:.88rem}
/* ===== Monetization components: signup, soft gate, live class, recommended tools, partner promo ===== */
.hp{position:absolute!important;left:-9999px!important}
.badge{display:inline-flex;align-items:center;gap:5px;border-radius:999px;padding:2px 10px;font-size:.78rem}
.badge .ic{width:1em;height:1em}
.badge.lock{background:var(--accent-soft);color:var(--warn)}
.badge.open{background:var(--tip-bg);color:var(--tip)}
/* signup block */
.nl{position:relative;background:linear-gradient(135deg,var(--brand-soft),color-mix(in srgb,var(--brand-soft) 35%,var(--surface)));border:1px solid var(--brand-line);border-radius:var(--radius);padding:28px clamp(20px,4vw,40px);box-shadow:var(--shadow-sm)}
.nl-eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-weight:800;letter-spacing:.09em;text-transform:uppercase;font-size:.78rem}
.nl .nl-title{font-size:clamp(1.4rem,2.6vw,1.9rem);margin:8px 0 8px!important;letter-spacing:-.025em;line-height:1.2}
.nl-text{margin:0 0 16px!important;color:var(--ink-2);max-width:44em}
.nl-row{display:flex;gap:10px;flex-wrap:wrap;max-width:560px}
.nl-row input{flex:1 1 240px;min-height:52px;padding:12px 16px;border:1.5px solid var(--line-2);border-radius:999px;font:inherit;font-size:1rem;background:var(--surface);color:var(--ink)}
.nl-row input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px color-mix(in srgb,var(--brand) 22%,transparent)}
.nl-row .btn{min-height:52px}
.nl-msg{margin:8px 0 0!important;font-size:.92rem;font-weight:600;color:var(--warn);min-height:0}
.nl-msg:empty{display:none}
.nl-fine{margin:10px 0 0!important;font-size:.85rem;color:var(--muted)}
.nl-fine a{color:inherit}
.nl-thanks{display:none}
.nl.is-done .nl-body{display:none}
.nl.is-done .nl-thanks{display:block}
.nl-thanks p{margin:0 0 8px!important}
.nl-thanks-h{display:flex;align-items:center;gap:10px;font-size:1.2rem}
.nl-thanks-h .ic{color:var(--tip);width:26px;height:26px}
.nl-pdfs{margin-top:10px}
.nl-pdfs summary{cursor:pointer;font-weight:700;color:var(--brand);display:inline-flex;align-items:center;gap:8px}
ul[data-pdf-list]{list-style:none!important;padding:0!important;margin:10px 0 0!important;display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:6px 18px}
ul[data-pdf-list] li{margin:0!important;padding:0!important;font-size:.95rem}
ul[data-pdf-list] li::marker{content:""}
ul[data-pdf-list] a{display:inline-flex;align-items:center;gap:8px;font-weight:600}
.nl-section{padding:0 0 56px}
.nl--band{display:grid}
.nl--end{margin:36px 0 0}
.nl--end .nl-title{font-size:1.35rem}
.guide-end .ws-callout{margin:24px 0 0}
/* footer signup (dark) */
.foot-nl{grid-column:1/-1}
.site-footer .nl{background:#171a24;border-color:#2a2f3d;box-shadow:none;padding:22px 24px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:8px 28px;align-items:center}
.site-footer .nl-body{display:contents}
.site-footer .nl .nl-title{color:#fff;font-size:1.15rem;text-transform:none;letter-spacing:-.01em;margin:0 0 4px!important}
.site-footer .nl-text{color:#aeb3c0;margin:0!important;font-size:.95rem}
.site-footer .nl-form{grid-column:2;grid-row:1/span 2}
.site-footer .nl-row input{background:#0f1118;border-color:#343a48;color:#fff}
.site-footer .nl-fine{color:#9ea3b0}
.site-footer .nl-thanks{color:#e7e9ef}
.site-footer .nl.is-done{display:block}
.site-footer .nl-pdfs summary,.site-footer ul[data-pdf-list] a{color:#c7d2fe}
/* soft gate */
.locked-body{display:none}
.unlocked .locked-body{display:block}
.unlocked .gate{display:none}
.prose>.gate,.prose>.locked-body,.prose>.rec-tools,.prose>.nl{max-width:none}
.gate{position:relative;margin:8px 0 32px}
.gate::before{content:"";position:absolute;left:0;right:0;top:-90px;height:90px;background:linear-gradient(to bottom,transparent,var(--surface));pointer-events:none}
.gate .nl{border-width:2px;box-shadow:var(--shadow)}
.gate-note{font-size:.9rem;color:var(--muted);margin:12px 4px 0!important}
html:not(.unlocked) .is-gated .guide-end .nl,html:not(.unlocked) .is-gated .dl.end{display:none}
.dl.end.pdf-slot:empty{display:none}
.unlock-note{display:flex;align-items:center;gap:10px;background:var(--tip-bg);border:1px solid var(--tip-line);color:var(--ink);border-radius:14px;padding:14px 18px;margin:0 0 24px;font-weight:600}
.unlock-note .ic{color:var(--tip);width:24px;height:24px}
/* FAQ */
.faq{margin:48px 0 8px}
.faq>h2{font-size:clamp(1.5rem,2.8vw,2rem);letter-spacing:-.025em;margin:0 0 16px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:14px;margin:0 0 10px;box-shadow:var(--shadow-sm)}
.faq-item summary{cursor:pointer;list-style:none;padding:16px 48px 16px 20px;font-weight:700;position:relative;color:var(--ink)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:20px;top:12px;font-size:1.4rem;color:var(--brand);font-weight:600}
.faq-item[open] summary::after{content:"\2212"}
.faq-a{padding:0 20px 16px;color:var(--ink-2)}
.faq-a p{margin:0}
/* live-class band + page */
.ws-band{display:grid;grid-template-columns:64px minmax(0,1fr);gap:18px 22px;margin:40px 0 0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px;box-shadow:var(--shadow-sm)}
.ws-band-ic{width:64px;height:64px;border-radius:18px;display:grid;place-items:center;background:var(--accent-soft);color:var(--warn)}
.ws-band-ic .ic{width:30px;height:30px}
.ws-band h2{font-size:1.45rem;margin:6px 0 8px}
.ws-band p{margin:0 0 16px;color:var(--ink-2)}
.side-workshop p{margin:0 0 12px;font-size:.95rem;color:var(--ink-2);line-height:1.5}
.side-workshop h2 .ic{color:var(--warn)!important}
.ws-facts{list-style:none;padding:0!important;margin:0 0 24px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.ws-facts li{display:flex;gap:10px;align-items:flex-start;background:var(--surface-2);border:1px solid var(--line);border-radius:14px;padding:14px;margin:0;color:var(--ink)}
.ws-facts .ic{color:var(--brand);width:22px;height:22px;margin-top:2px}
.ws-facts b{display:block;color:var(--ink)}
.ws-facts span{font-size:.88rem;color:var(--muted);line-height:1.35}
.ws-page .ticks li{color:var(--ink-2)}
.ws-form{margin:40px 0 0;background:linear-gradient(135deg,var(--brand-soft),color-mix(in srgb,var(--brand-soft) 35%,var(--surface)));border:1px solid var(--brand-line);border-radius:var(--radius);padding:28px clamp(18px,4vw,40px)}
.ws-form h2{margin-top:0!important}
.field-help{display:block;margin-top:6px;color:var(--muted)}
.opt{font-weight:500;color:var(--muted)}
.form-msg{color:var(--warn);font-weight:600}
.form-msg:empty{display:none}
.ajax-thanks{display:none}
.ajax-wrap.is-done form{display:none}
.ajax-wrap.is-done .ajax-thanks{display:block}
/* recommended tools */
.rec-tools{margin:2.4em 0 0;padding:26px clamp(16px,3vw,28px);background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius)}
.rec-tools h2{margin-top:0!important}
.rec-grid{list-style:none;padding:0!important;margin:0 0 16px!important;display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.rec-grid li.rec{margin:0;padding:16px;background:var(--surface);border:1px solid var(--line);border-radius:14px;display:flex;flex-direction:column;gap:2px;font-size:.98rem;line-height:1.45}
.rec-grid li::marker{content:""}
.rec small{color:var(--muted);font-weight:600}
.rec span{color:var(--ink-2);margin:6px 0 10px}
.rec a{margin-top:auto;font-weight:700}
.aff-note{display:flex;gap:10px;font-size:.9rem!important;color:var(--muted);margin:0!important;line-height:1.5}
.aff-note .ic{color:var(--brand);margin-top:2px}
/* partner promo (Card Capital) */
.cc-root{position:fixed;inset:0;z-index:60;display:grid;place-items:center;padding:20px;pointer-events:none}
.cc-backdrop{position:absolute;inset:0;background:var(--overlay);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);opacity:0;transition:opacity .2s}
.cc-promo{position:relative;pointer-events:auto;width:min(460px,100%);background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow-lg);padding:28px 28px 24px;opacity:0;transform:translateY(12px) scale(.98);transition:opacity .2s,transform .2s}
.cc-root.open .cc-backdrop{opacity:1}
.cc-root.open .cc-promo{opacity:1;transform:none}
.cc-promo:focus{outline:none}
.cc-x{position:absolute;top:12px;right:12px;width:40px;height:40px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink-2);display:grid;place-items:center;cursor:pointer}
.cc-x:hover{background:var(--surface-2);color:var(--ink)}
.cc-x .ic{width:18px;height:18px}
.cc-label{display:inline-block;margin:0 0 10px;font-size:.74rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);background:var(--surface-2);border:1px solid var(--line);border-radius:999px;padding:4px 10px}
.cc-promo h2{font-size:1.4rem;margin:0 40px 10px 0;line-height:1.2}
.cc-promo p{margin:0 0 12px;color:var(--ink-2);font-size:1rem;line-height:1.55}
.cc-promo .cc-fine{font-size:.82rem;color:var(--muted)}
.cc-promo .cc-fine a{color:inherit}
.cc-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
@media (prefers-reduced-motion:reduce){.cc-backdrop,.cc-promo{transition:none}}
@media (max-width:640px){
  .cc-root{inset:auto 0 0 0;display:block;padding:0 10px 10px}
  .cc-backdrop{display:none}
  .cc-promo{width:100%;padding:16px 16px 14px;border-radius:16px}
  .cc-promo h2{font-size:1.05rem;margin:0 40px 6px 0}
  .cc-promo p{font-size:.9rem;margin:0 0 6px}
  .cc-promo .cc-more{display:none}
  .cc-label{margin:0 0 6px;font-size:.66rem;padding:3px 8px}
  .cc-x{top:8px;right:8px;width:36px;height:36px}
  .cc-actions{margin-top:10px}
  .cc-actions .btn{min-height:42px;padding:9px 14px;font-size:.92rem;flex:1 1 auto}
  .nl-row .btn{flex:1 1 100%}
  .site-footer .nl{grid-template-columns:1fr}
  .site-footer .nl-form{grid-column:1;grid-row:auto}
  .ws-facts{grid-template-columns:1fr 1fr}
  .ws-band{grid-template-columns:1fr;padding:22px 18px}
}
@media (max-width:900px) and (min-width:641px){.ws-facts{grid-template-columns:1fr 1fr}}
/* ================================================================ */
/* ---------- Theme toggle (dark is the default) ---------- */
.theme-toggle{order:3;display:inline-grid;place-items:center;width:42px;height:42px;flex:0 0 42px;border-radius:999px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink);cursor:pointer;padding:0;transition:background .15s,border-color .15s}
.theme-toggle:hover{background:var(--surface-2);border-color:var(--brand-line)}
.theme-toggle .ic{width:20px;height:20px}
.theme-toggle .i-sun{display:none}
[data-theme="dark"] .theme-toggle .i-sun{display:block}
[data-theme="dark"] .theme-toggle .i-moon{display:none}
html:not([data-js]) .theme-toggle{display:none}
[data-theme="dark"] .site-footer{border-top:1px solid var(--line)}
[data-theme="dark"] .site-header{background:color-mix(in srgb,var(--bg) 88%,transparent)}
[data-theme="dark"] .btn.ghost{background:transparent}
[data-theme="dark"] .contact-form input,[data-theme="dark"] .contact-form select,[data-theme="dark"] .contact-form textarea,[data-theme="dark"] .nl-row input{background:var(--surface-2)}
[data-theme="dark"] ::placeholder{color:#8f95a3;opacity:1}
/* ---------- Responsive ---------- */
@media (max-width:1239px){
  .wrap.guide-layout{grid-template-columns:minmax(0,1fr) 300px;grid-template-areas:"toc side" "main side";row-gap:20px;max-width:1200px}
  .guide-layout>.toc{position:static;max-height:none}
}
@media (max-width:1060px){.path{grid-template-columns:repeat(2,minmax(0,1fr))}.path::before{display:none}.site-footer .in{grid-template-columns:1fr 1fr}}
@media (max-width:900px){
  .hero{padding:40px 0 48px}
  .hero-in{grid-template-columns:minmax(0,1fr);gap:28px}
  .hero-art svg{max-width:460px;margin:0 auto}
  .wrap,.wrap.guide-layout{grid-template-columns:minmax(0,1fr);grid-template-areas:"toc" "main" "side"}
  .ad-slot--sidebar{min-height:250px;max-width:none}
  .side-sticky{position:static}
  .section{padding:44px 0}
}
@media (max-width:640px){
  body{font-size:17px}
  :root{--header-h:auto}
  html{scroll-padding-top:16px}
  .site-header{position:relative}
  .site-header .in{flex-wrap:wrap;gap:4px 12px;padding:10px 14px 6px}
  .site-nav{margin-left:-10px;width:calc(100% + 20px);overflow-x:auto;gap:2px;scrollbar-width:none}
  .site-nav .nav-cta{display:none}
  .theme-toggle{order:0;margin-left:auto;width:40px;height:40px;flex-basis:40px}
  .site-nav{order:1}
  .site-nav a{padding:8px 10px;white-space:nowrap}
  .container,.hero-in{padding:0 16px}
  .hero h1{margin:18px 0 14px}
  .hero-actions .btn{flex:1 1 100%}
  .trust{gap:10px 18px;font-size:.92rem}
  .path{grid-template-columns:minmax(0,1fr)}
  .wrap{padding:20px 12px;gap:24px}
  .card{grid-template-columns:minmax(0,1fr);padding:22px 18px;gap:10px}
  .card-ic{grid-row:auto;width:52px;height:52px;border-radius:15px}
  .card-body{grid-column:1}
  .card .actions .btn{flex:1 1 100%}
  article.guide,.page{padding:28px 18px 28px;border-radius:18px}
  .prose{font-size:1.06rem}
  .box{padding:14px 16px 14px 52px}
  .box .box-ic{left:14px}
  .pager{grid-template-columns:1fr}
  .meta .steps{display:none}
  .ad-slot{font-size:.66rem;padding:26px 10px 12px}
  .pager .next{grid-column:1}
  .ad-slot--header,.ad-slot--footer{min-height:60px}
  .ad-wrap{padding:0 12px}
  .site-footer .in{grid-template-columns:1fr;gap:24px;padding:36px 18px 24px}
  .dl .btn{flex:1 1 100%}
}
@media print{
  .site-header,.site-footer,.ad-slot,.ad-wrap,aside.sidebar,.pager,.dl,.toc,.progress,.copy,.hero-art,.nl,.gate,.cc-root,.guide-end,.ws-band{display:none!important}
  body{background:#fff;color:#000;font-size:12pt}
  .wrap{display:block}article.guide{border:0;box-shadow:none;padding:0}
  .box,.prompt-card,.table-wrap,.takeaways{break-inside:avoid}
}
.mission{padding:48px 0 8px}
.mission-card{max-width:1000px;margin:0 auto;display:flex;align-items:center;gap:36px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:32px 36px;box-shadow:var(--shadow-sm)}
.mission-fig{flex:0 0 200px;margin:0;text-align:center}
.mission-fig img{display:block;width:200px;height:auto;aspect-ratio:4/5;object-fit:cover;object-position:center top;border-radius:var(--radius);border:1px solid var(--line-2);box-shadow:var(--shadow-sm)}
.mission-fig figcaption{margin-top:10px;font-size:.86rem;font-weight:700;color:var(--muted)}
.mission-body h2{font-size:clamp(1.6rem,3vw,2.1rem);margin:8px 0 12px;letter-spacing:-.03em}
.mission-body p{color:var(--ink-2);font-size:1.08rem;margin:0}
.video-sec .section-head{text-align:center;margin-left:auto;margin-right:auto}.video-sec .section-head .intro{margin-left:auto;margin-right:auto}
.video-wrap{max-width:360px;margin:8px auto 0;padding:8px;background:var(--surface);border:1px solid var(--line);border-radius:calc(var(--radius) + 6px);box-shadow:var(--shadow-lg)}
.video-wrap video{display:block;width:100%;height:auto;aspect-ratio:9/16;border-radius:var(--radius);background:#000}
@media (max-width:720px){.video-wrap{max-width:min(320px,86vw)}}
.lvl-grid{display:grid;grid-template-columns:repeat(2,minmax(0,360px));justify-content:center;gap:24px;margin-top:8px}
.lvl-card{background:var(--surface);border:1px solid var(--line);border-radius:calc(var(--radius) + 6px);padding:18px;display:flex;flex-direction:column;box-shadow:var(--shadow-lg)}
.lvl-card h3{margin:10px 0 6px;font-size:1.12rem}.lvl-card p{margin:0 0 14px;color:var(--muted);font-size:.95rem}
.lvl-card .video-wrap{margin:auto 0 0;padding:0;border:0;box-shadow:none;background:none;max-width:none}
.lvl-badge{align-self:flex-start;font-size:.75rem;font-weight:800;letter-spacing:.09em;text-transform:uppercase;padding:4px 10px;border-radius:999px;background:var(--accent-soft);color:var(--accent)}
.lvl-grid-soon{margin-top:20px}
.guide-video{margin-top:40px;padding-top:28px;border-top:1px solid var(--line);text-align:center}.guide-video h2{margin-top:0}.guide-video p{color:var(--muted)}
.lvl-soon{box-shadow:none;border-style:dashed;opacity:.7;position:relative}.lvl-soon .lvl-badge{background:var(--line);color:var(--muted)}
.lvl-soon-tag{position:absolute;top:18px;right:18px;font-size:.72rem;font-weight:700;color:var(--muted);border:1px solid var(--line-2);border-radius:999px;padding:3px 9px}
@media (max-width:720px){.lvl-grid{grid-template-columns:minmax(0,min(360px,92vw))}}
@media (max-width:720px){.mission-card{flex-direction:column;text-align:center;padding:26px 20px;gap:20px}.mission-fig{flex:none}.mission-fig img{width:180px;margin:0 auto}.mission-body .eyebrow{justify-content:center}}
/* ===== Calm readability layer (overrides above) ===== */
:root[data-theme="dark"]{
  --bg:#0f1220;--surface:#161a2b;--surface-2:#1b2034;--surface-3:#252b42;
  --ink:#e6e8ef;--ink-2:#c3c7d4;--muted:#9aa0b4;--line:#242a3f;--line-2:#30374f;
  --brand:#a9a4ff;--brand-2:#c4c0ff;--brand-soft:#1f2140;--brand-line:#3a3d6b;--brand-ink:#c4c0ff;
  --btn:#6c63ff;--btn-hover:#7d75ff;
  --accent:var(--brand);--accent-soft:var(--brand-soft);
  --tip:#a9a4ff;--tip-bg:#1b1f36;--tip-line:#30374f;
  --warn:#e6c07b;--warn-bg:#1b2034;--warn-line:#30374f;
  --info:#a9a4ff;--info-bg:#1b2034;--info-line:#30374f;
  --c1:var(--brand);--c1s:var(--brand-soft);--c2:var(--brand);--c2s:var(--brand-soft);--c3:var(--brand);--c3s:var(--brand-soft);--c4:var(--brand);--c4s:var(--brand-soft);
  --shadow-sm:none;--shadow:0 8px 24px -12px rgba(0,0,0,.5);--overlay:rgba(4,5,9,.5);
}
:root{--radius:14px;--radius-sm:10px;--header-h:64px;--s1:8px;--s2:16px;--s3:24px;--s4:32px;--s6:48px;--s8:64px;--s12:96px}
body{font-size:18px;line-height:1.65}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
.btn{box-shadow:none;border-radius:10px}.btn:hover{transform:none}
.btn.ghost{border-color:var(--line-2);color:var(--ink)}
.container,.hero-in{max-width:1080px;padding:0 24px}
/* header */
.site-header{background:color-mix(in srgb,var(--bg) 92%,transparent)!important;border-bottom:1px solid var(--line)}
.site-header .in{max-width:1080px;padding:0 24px;gap:24px}
.logo{font-size:1.05rem}.logo svg{width:30px;height:30px;box-shadow:none}
.site-nav{gap:8px}
.site-nav a{border-radius:8px;padding:8px 12px;color:var(--ink-2)}
.site-nav a[aria-current]{background:none;color:var(--ink);box-shadow:inset 0 -2px 0 var(--brand);border-radius:0}
.theme-toggle{border-color:var(--line);background:transparent}
.progress span{background:var(--brand)}
/* hero */
.hero{background:var(--bg);border-bottom:0;padding:var(--s12) 0 var(--s8)}
.hero-in{display:block;text-align:center}
.hero h1{font-size:clamp(2.2rem,5vw,3.4rem);font-weight:800;letter-spacing:-.025em;margin:0 auto var(--s3);max-width:22ch;line-height:1.1}
.hero p.sub{margin:0 auto var(--s4);max-width:34em;color:var(--ink-2)}
.hero-actions{justify-content:center}
.hero-note{margin:var(--s3) 0 0;color:var(--muted);font-size:.95rem}
/* sections */
.section{padding:var(--s8) 0}
.section-head{max-width:68ch;margin:0 0 var(--s4)}
.section-head h2,.mission-body h2,.nl .nl-title{font-size:clamp(1.6rem,3vw,2rem);letter-spacing:-.02em;margin:0 0 var(--s1);font-weight:750}
.section-head p,.intro{color:var(--muted);font-size:1.05rem}
.video-sec{border-top:1px solid var(--line)}
.lvl-grid{gap:var(--s3)}
.lvl-card{box-shadow:none;border-radius:var(--radius);padding:var(--s3)}
.lvl-badge,.lvl-soon .lvl-badge{background:none;padding:0;color:var(--muted);letter-spacing:.06em}
.lvl-card h3{margin:var(--s1) 0}
.lvl-soon{opacity:1;border-style:solid;background:transparent}
.lvl-soon h3{color:var(--ink-2)}
.lvl-soon-tag{border-color:var(--line-2)}
.lvl-grid-soon{margin-top:var(--s3)}
/* home guides */
.wrap.single.home-main{max-width:1080px;padding:0 24px;display:block}
#guides{border-top:1px solid var(--line)}
.ggroup{margin:0 0 var(--s4)}
.ggroup h3{font-size:.85rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:0 0 var(--s2);font-weight:700}
.ggrid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--s2)}
.gcard{position:relative;margin:0;display:flex;flex-direction:column;gap:var(--s1);background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:var(--s3);transition:border-color .15s}
.gcard:hover{border-color:var(--brand-line)}
.gcard:focus-within{border-color:var(--brand)}
.gcard-ic{color:var(--brand)}.gcard-ic .ic{width:24px;height:24px}
.gcard h4{margin:0;padding-right:64px;font-size:1.08rem;line-height:1.3}
.gcard h4 a{color:var(--ink);text-decoration:none}
.gcard h4 a::after{content:"";position:absolute;inset:0;border-radius:var(--radius)}
.gcard h4 a:focus-visible{outline:none}
.gcard p{margin:0;color:var(--muted);font-size:.95rem;line-height:1.5}
.tag{position:absolute;top:var(--s3);right:var(--s3);font-size:.75rem;font-weight:700;letter-spacing:.04em;padding:2px 10px;border-radius:999px;border:1px solid var(--line-2);color:var(--muted)}
.tag-free{color:var(--brand-2);border-color:var(--brand-line)}
/* sponsored card */
.ad-slot{background:var(--surface)!important;border:1px solid var(--line);border-radius:var(--radius)}
.house-ad{margin:var(--s6) 0;padding:var(--s4) var(--s3) var(--s3);gap:var(--s2) var(--s3)}
.house-ad::before{content:"Sponsored";top:10px;left:var(--s3);font-size:.68rem;color:var(--muted)}
.house-ad.ad-slot--in-content{flex-direction:row;align-items:center;justify-content:space-between}
.house-ad.ad-slot--in-content .ha-txt{flex:1 1 280px;width:auto}
.ha-brand{color:var(--muted)}
.ha-head{font-size:1.02rem}.ha-pitch{color:var(--muted)}
.ha-cta{background:transparent;color:var(--ink);border:1px solid var(--line-2);min-height:42px;padding:8px 16px;font-size:.95rem}
.ha-cta:hover{background:var(--surface-2);color:var(--ink)}
/* newsletter */
.nl-section{padding:var(--s8) 0;border-top:1px solid var(--line)}
.nl{background:var(--surface);border:1px solid var(--line);box-shadow:none;border-radius:var(--radius);padding:var(--s6) var(--s4)}
.nl--band{max-width:760px;margin:0 auto;text-align:center}
.nl--band .nl-row{margin:0 auto}.nl--band .nl-text{margin:0 auto var(--s3)!important}
.nl-eyebrow{color:var(--muted)}
.nl-text{color:var(--ink-2)}
.nl-row input{border-radius:10px;background:var(--bg)!important}
/* mission */
.mission{padding:var(--s8) 0;border-top:1px solid var(--line)}
.mission-card{background:none;border:0;box-shadow:none;padding:0;gap:var(--s6);max-width:900px}
.mission-fig img{border-radius:var(--radius);border:0;box-shadow:none}
.mission-body p{max-width:60ch;color:var(--ink-2)}
/* footer */
.site-footer{background:var(--bg);border-top:1px solid var(--line);margin-top:0;color:var(--muted)}
.site-footer .in{max-width:1080px;padding:var(--s6) 24px var(--s4);grid-template-columns:2fr 1fr 1fr}
.site-footer a{color:var(--ink-2)}.site-footer h2{color:var(--ink);font-size:.8rem}
.site-footer .brand p{color:var(--muted)}.site-footer .legal{border-color:var(--line);color:var(--muted)}
/* guide pages */
.wrap{max-width:1080px}
.wrap.guide-layout{max-width:1080px;grid-template-columns:220px minmax(0,1fr);grid-template-areas:"toc main";gap:var(--s6);padding:var(--s6) 24px}
article.guide,.page{background:none;border:0;box-shadow:none;padding:0;border-radius:0}
.wrap.single{max-width:760px;padding:var(--s6) 24px}
.page-ic{display:none}
.kicker{background:none;padding:0;color:var(--brand);letter-spacing:.06em}
.kicker .ic{display:none}
article.guide h1,.page h1{font-size:clamp(2rem,4vw,2.6rem);font-weight:800;letter-spacing:-.025em;margin:var(--s1) 0 var(--s2)}
.lede{color:var(--ink-2);font-size:1.2rem;max-width:62ch}
.meta{border-bottom:1px solid var(--line);padding-bottom:var(--s3);margin-bottom:var(--s4);gap:var(--s3)}
.prose{font-size:1.06rem;line-height:1.7}
.prose>*{max-width:68ch}
.prose h2{font-size:1.5rem;margin:var(--s6) 0 var(--s2)}
.prose h3{font-size:1.15rem;margin:var(--s4) 0 var(--s1)}
.prose li::marker{color:var(--muted)}
.dl{background:none;border:1px solid var(--line);border-radius:var(--radius);padding:var(--s2) var(--s3);max-width:68ch}
.dl .doc{display:none}
.dl .btn{background:transparent;color:var(--ink);border:1px solid var(--line-2)}
.takeaways{background:none;border:0;border-left:3px solid var(--brand);border-radius:0;padding:var(--s1) 0 var(--s1) var(--s3);margin:var(--s3) 0 var(--s4)}
.takeaways h2 .ic{display:none}
.ticks li::before{background:none;border:0;content:"\2013";color:var(--muted);top:0;width:auto;height:auto;left:4px}
.ticks li{padding-left:24px}
.box,.box.tip,.box.warn,.box.day{background:var(--surface);border:0;border-left:3px solid var(--line-2);border-radius:var(--radius-sm);padding:var(--s2) var(--s3)}
.box.tip{border-left-color:var(--brand)}.box.warn{border-left-color:var(--warn)}
.box .box-ic{display:none}
.box b.label,.box.tip b.label,.box.day b.label{color:var(--ink)}.box.warn b.label{color:var(--warn)}
.prompt-card{border-color:var(--line);box-shadow:none;border-radius:var(--radius-sm)}
.prompt-head{background:var(--surface-2);color:var(--muted);border-color:var(--line)}
.prompt-head .copy{color:var(--ink-2);border-color:var(--line-2);background:transparent}
.table-wrap{border-color:var(--line)}tr:nth-child(even) td{background:transparent}
.gate::before{background:linear-gradient(to bottom,transparent,var(--bg))}
.gate .nl{border-width:1px;box-shadow:none}
.toc details{background:none;border:0;box-shadow:none;padding:0}
.toc summary{padding:0 0 var(--s1);font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.toc summary .ic{display:none}
.toc ol{margin-left:0;border-left:1px solid var(--line)}
.toc a{font-weight:500;padding:6px 12px}
.pager{gap:var(--s2);margin-top:var(--s6);border-top:1px solid var(--line);padding-top:var(--s4)}
.pager a{background:none;box-shadow:none;border-color:var(--line)}
.nl--end{margin:var(--s6) 0 0}
.badge.lock,.badge.open{background:none;border:1px solid var(--line-2);color:var(--muted)}
/* partner promo: quiet corner card */
.cc-root{inset:auto 16px 16px auto;display:block;padding:0;width:min(380px,calc(100% - 32px))}
.cc-backdrop{display:none}
.cc-promo{width:100%;padding:var(--s3);border-radius:var(--radius);box-shadow:var(--shadow)}
.cc-promo h2{font-size:1.05rem}.cc-promo p{font-size:.92rem}
.cc-promo .cc-more{display:none}
.cc-actions .btn{min-height:40px;padding:8px 14px;font-size:.92rem}
@media (max-width:1060px){.site-footer .in{grid-template-columns:1fr 1fr}}
@media (max-width:900px){
  .ggrid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .wrap.guide-layout{grid-template-columns:minmax(0,1fr);grid-template-areas:"toc" "main";padding:var(--s4) 20px}
  .toc details{border:1px solid var(--line);border-radius:var(--radius-sm);padding:var(--s1) var(--s2)}
  .toc summary{padding:var(--s1) 0}
}
@media (max-width:640px){
  body{font-size:17px}
  .site-header{position:sticky}
  .site-header .in{padding:8px 16px}
  .site-nav{margin:0 -8px;width:calc(100% + 16px)}
  .site-nav a{padding:8px}
  .hero{padding:var(--s8) 0 var(--s6)}
  .container,.hero-in,.wrap.single.home-main{padding:0 20px}
  .ggrid{grid-template-columns:1fr}
  .house-ad.ad-slot--in-content{flex-direction:column;align-items:flex-start}
  .nl{padding:var(--s4) var(--s3)}
  .site-footer .in{grid-template-columns:1fr}
  .cc-root{inset:auto 8px 8px 8px;width:auto}
}