:root {
  color-scheme: light;
  --ink: #171a1f;
  --muted: #5b616a;
  --faint: #858b93;
  --paper: #fbfaf6;
  --surface: #ffffff;
  --surface-soft: #f3efe5;
  --line: #ded9ce;
  --accent: #9c5a1a;
  --accent-strong: #7e4310;
  --accent-soft: #f2e3cf;
  --forest: #1f7652;
  --forest-soft: #e2f1e9;
  --blue: #245f91;
  --blue-soft: #e4eef7;
  --bad: #a53a30;
  --good: #1f7652;
  --shadow: 0 24px 70px rgba(44, 35, 24, .12);
  --shadow-soft: 0 12px 36px rgba(44, 35, 24, .08);
  --radius: 22px;
  --radius-sm: 13px;
  --max: 1160px;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --serif: Georgia, "Times New Roman", serif;
  --mono: ui-monospace, "SFMono-Regular", Consolas, monospace;

  /* Shared privacy UI tokens. */
  --panel: var(--surface);
  --panel-2: var(--surface-soft);
  --text: var(--ink);
  --text-muted: var(--muted);
  --text-faint: var(--faint);
  --accent-bright: var(--accent-strong);
  --on-accent: #fffaf1;
  --shadow-1: rgba(44, 35, 24, .14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 12% -10%, rgba(156, 90, 26, .09), transparent 32rem),
    radial-gradient(circle at 92% 12%, rgba(36, 95, 145, .07), transparent 30rem),
    var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 4px; }
a:hover { color: var(--accent-strong); }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid rgba(156, 90, 26, .35); outline-offset: 3px; }
.skip-link {
  position: fixed;
  inset: 10px auto auto 10px;
  z-index: 1001;
  transform: translateY(-150%);
  padding: 9px 14px;
  border-radius: 9px;
  background: var(--ink);
  color: #fff;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(222, 217, 206, .82);
  background: rgba(251, 250, 246, .9);
  backdrop-filter: blur(18px);
}
.nav-shell {
  width: min(calc(100% - 32px), var(--max));
  min-height: 74px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 26px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: none;
  color: var(--ink);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: -.01em;
  text-decoration: none;
}
.brand img {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  box-shadow: 0 6px 18px rgba(44, 35, 24, .15);
}
.site-nav {
  margin-inline-start: auto;
  display: flex;
  align-items: center;
  gap: 3px;
  scrollbar-width: none;
}
.site-nav::-webkit-scrollbar { display: none; }
.site-nav a {
  padding: 9px 12px;
  border-radius: 9px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}
.site-nav a:hover,
.site-nav a[aria-current="page"] { background: var(--surface-soft); color: var(--ink); }
.nav-account {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding-inline: 12px;
  border-radius: 10px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}
.nav-account:hover { background: var(--surface-soft); color: var(--ink); }
.nav-cta, .button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 17px;
  border: 1px solid var(--accent);
  border-radius: 11px;
  background: var(--accent);
  color: #fffaf1;
  font-size: 13px;
  font-weight: 800;
  line-height: 1.2;
  text-decoration: none;
  box-shadow: 0 8px 20px rgba(156, 90, 26, .18);
}
.nav-cta:hover, .button:hover { background: var(--accent-strong); color: #fff; }
.button.secondary { background: var(--surface); color: var(--ink); border-color: var(--line); box-shadow: none; }
.button.secondary:hover { border-color: #bbb3a4; background: var(--surface-soft); }

main { overflow: hidden; }
.shell { width: min(calc(100% - 32px), var(--max)); margin-inline: auto; }
.hero {
  min-height: 650px;
  padding-block: clamp(72px, 10vw, 126px) 78px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr);
  align-items: center;
  gap: clamp(46px, 7vw, 96px);
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  color: var(--accent-strong);
  font: 800 12px/1.2 var(--sans);
  letter-spacing: .1em;
  text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 26px; height: 1px; background: currentColor; }
.hero h1, .page-hero h1 {
  margin: 0;
  max-width: 850px;
  font-family: var(--serif);
  font-weight: 600;
  letter-spacing: -.045em;
  line-height: .98;
}
.hero h1 { font-size: clamp(48px, 6.5vw, 80px); }
.page-hero h1 { font-size: clamp(42px, 6vw, 68px); }
.hero h1 em { color: var(--accent); font-style: normal; }
.hero-lead, .page-lead {
  max-width: 680px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.55;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 11px; margin-block-start: 30px; }
.trust-line {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin: 28px 0 0;
  padding: 0;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  list-style: none;
}
.trust-line li { display: inline-flex; align-items: center; gap: 7px; }
.trust-line li::before { content: "✓"; color: var(--forest); font-weight: 900; }

.review-preview {
  position: relative;
  padding: 22px;
  border: 1px solid rgba(222, 217, 206, .9);
  border-radius: 28px;
  background: rgba(255, 255, 255, .86);
  box-shadow: var(--shadow);
  transform: rotate(1.1deg);
}
.review-preview::before {
  content: "";
  position: absolute;
  inset: 16px -16px -16px 16px;
  z-index: -1;
  border: 1px solid rgba(156, 90, 26, .16);
  border-radius: inherit;
  background: var(--accent-soft);
}
.preview-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.preview-title { font-size: 13px; font-weight: 850; }
.reliability {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 9px;
  border-radius: 999px;
  background: var(--forest-soft);
  color: var(--forest);
  font-size: 10px;
  font-weight: 850;
  text-transform: uppercase;
  letter-spacing: .06em;
}
.reliability::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.accuracy-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-block: 18px; }
.accuracy-card { padding: 16px; border-radius: var(--radius-sm); background: var(--surface-soft); }
.accuracy-card span { display: block; color: var(--muted); font-size: 10px; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.accuracy-card strong { display: block; margin-block-start: 4px; font: 700 29px/1 var(--serif); }
.moment-list { display: grid; gap: 8px; }
.moment {
  display: grid;
  grid-template-columns: 34px 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 11px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--surface);
}
.move-icon { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; font-size: 14px; font-weight: 900; }
.move-icon.good { background: var(--forest-soft); color: var(--forest); }
.move-icon.warn { background: var(--accent-soft); color: var(--accent-strong); }
.moment strong { display: block; font-size: 12px; }
.moment small { display: block; color: var(--muted); font-size: 10px; }
.moment code { font: 700 11px/1 var(--mono); color: var(--muted); }

.proof-strip { border-block: 1px solid var(--line); background: rgba(255, 255, 255, .5); }
.proof-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.proof-item { padding: 24px; border-inline-end: 1px solid var(--line); }
.proof-item:first-child { border-inline-start: 1px solid var(--line); }
.proof-item strong { display: block; font: 700 22px/1.15 var(--serif); }
.proof-item span { color: var(--muted); font-size: 12px; }

.section { padding-block: clamp(76px, 10vw, 126px); }
.section.soft { background: rgba(243, 239, 229, .56); border-block: 1px solid rgba(222, 217, 206, .7); }
.section-heading { max-width: 760px; margin-block-end: 42px; }
.section-heading h2 { margin: 0; font: 600 clamp(36px, 5vw, 56px)/1.05 var(--serif); letter-spacing: -.035em; }
.section-heading p { margin: 16px 0 0; color: var(--muted); font-size: 17px; }
.steps, .feature-grid, .trust-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.trust-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card {
  min-width: 0;
  padding: 27px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .82);
  box-shadow: var(--shadow-soft);
}
.step-number {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  margin-block-end: 28px;
  border-radius: 11px;
  background: var(--ink);
  color: #fff;
  font: 800 12px/1 var(--mono);
}
.card h3 { margin: 0; font-size: 17px; line-height: 1.25; }
.card p { margin: 10px 0 0; color: var(--muted); font-size: 14px; }
.card a { font-weight: 750; }
.feature-card { position: relative; overflow: hidden; }
.feature-card::after {
  content: "";
  position: absolute;
  width: 90px;
  height: 90px;
  inset: -35px -30px auto auto;
  border-radius: 50%;
  background: var(--accent-soft);
}
.feature-card.blue::after { background: var(--blue-soft); }
.feature-card.green::after { background: var(--forest-soft); }
.feature-kicker { display: block; margin-block-end: 36px; color: var(--accent-strong); font: 800 11px/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.feature-card.blue .feature-kicker { color: var(--blue); }
.feature-card.green .feature-kicker { color: var(--forest); }

.quote {
  max-width: 920px;
  margin-inline: auto;
  text-align: center;
}
.quote blockquote { margin: 0; font: 500 clamp(28px, 4.3vw, 48px)/1.2 var(--serif); letter-spacing: -.025em; }
.quote p { margin: 22px 0 0; color: var(--muted); font-size: 13px; }

.cta-panel {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 32px;
  padding: clamp(34px, 6vw, 62px);
  border-radius: 28px;
  background: var(--ink);
  color: #fff;
}
.cta-panel::after { content: "♞"; position: absolute; inset: -55px 7% auto auto; color: rgba(255,255,255,.055); font: 220px/1 var(--serif); transform: rotate(-9deg); }
.cta-panel h2 { position: relative; z-index: 1; margin: 0; font: 600 clamp(34px, 4vw, 50px)/1.05 var(--serif); letter-spacing: -.035em; }
.cta-panel p { position: relative; z-index: 1; max-width: 630px; margin: 12px 0 0; color: rgba(255,255,255,.7); }
.cta-panel .button { position: relative; z-index: 1; background: #fff; border-color: #fff; color: var(--ink); }

.page-hero { padding-block: clamp(70px, 9vw, 112px) 62px; border-bottom: 1px solid var(--line); }
.breadcrumb { margin: 0 0 24px; color: var(--muted); font-size: 12px; font-weight: 700; }
.breadcrumb ol { display: flex; gap: 7px; margin: 0; padding: 0; list-style: none; }
.breadcrumb li + li::before { content: "/"; margin-inline-end: 7px; color: var(--faint); }
.content-layout { display: grid; grid-template-columns: minmax(0, 760px) 260px; align-items: start; justify-content: space-between; gap: 80px; padding-block: 68px 108px; }
.prose { min-width: 0; }
.prose h2 { margin: 52px 0 15px; font: 600 34px/1.12 var(--serif); letter-spacing: -.025em; }
.prose h2:first-child { margin-block-start: 0; }
.prose h3 { margin: 34px 0 10px; font-size: 18px; line-height: 1.3; }
.prose p, .prose li { color: #444a52; }
.prose ul, .prose ol { padding-inline-start: 22px; }
.prose li { margin-block: 8px; }
.prose strong { color: var(--ink); }
.prose code { padding: 2px 5px; border-radius: 5px; background: var(--surface-soft); font: 700 13px/1.2 var(--mono); }
.prose .notice { margin-block: 28px; padding: 20px 22px; border-inline-start: 4px solid var(--accent); border-radius: 0 12px 12px 0; background: var(--accent-soft); }
.prose .notice.green { border-color: var(--forest); background: var(--forest-soft); }
.prose table { width: 100%; border-collapse: collapse; margin-block: 24px; font-size: 14px; }
.prose th, .prose td { padding: 12px 10px; border-bottom: 1px solid var(--line); text-align: start; vertical-align: top; }
.prose th { color: var(--ink); font-size: 11px; text-transform: uppercase; letter-spacing: .06em; }
.toc { position: sticky; top: 100px; padding: 18px; border: 1px solid var(--line); border-radius: 14px; background: rgba(255,255,255,.72); }
.toc strong { display: block; margin-block-end: 8px; font-size: 11px; text-transform: uppercase; letter-spacing: .08em; }
.toc a { display: block; padding-block: 5px; color: var(--muted); font-size: 12px; font-weight: 650; text-decoration: none; }
.toc a:hover { color: var(--accent-strong); }
.meta-row { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-block-start: 24px; color: var(--muted); font-size: 12px; }

.editorial-cover { margin-block: 38px 0; }
.editorial-cover img {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: clamp(16px, 3vw, 26px);
  background: var(--surface-soft);
  box-shadow: var(--shadow-soft);
}
.editorial-cover figcaption { margin-block-start: 10px; color: var(--faint); font-size: 11px; line-height: 1.5; }
.editorial-cover + .content-layout { padding-block-start: 52px; }

.example { display: grid; grid-template-columns: 190px 1fr; gap: 24px; margin-block: 24px; padding: 24px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }
.example-score { display: grid; place-items: center; min-height: 150px; border-radius: 14px; background: var(--surface-soft); text-align: center; }
.example-score strong { display: block; font: 700 44px/1 var(--serif); }
.example-score span { display: block; color: var(--muted); font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: .07em; }
.example h3 { margin-block-start: 4px; }
.tag-list { display: flex; flex-wrap: wrap; gap: 7px; margin-block-start: 14px; }
.tag { padding: 5px 9px; border-radius: 999px; background: var(--surface-soft); color: var(--muted); font-size: 10px; font-weight: 750; }
details { margin-block: 10px; padding: 17px 18px; border: 1px solid var(--line); border-radius: 13px; background: var(--surface); }
summary { cursor: pointer; font-weight: 750; }
details p { margin-block-end: 0; }

.guide-hero { background: radial-gradient(circle at 86% 25%, rgba(156, 90, 26, .11), transparent 28%); }
.guide-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.guide-card {
  position: relative;
  overflow: hidden;
  min-width: 0;
  padding: clamp(27px, 4vw, 40px);
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(255,255,255,.84);
  box-shadow: var(--shadow-soft);
}
.guide-card.featured { grid-row: span 2; background: linear-gradient(145deg, rgba(255,255,255,.96), rgba(247,239,224,.88)); }
.guide-number { position: absolute; inset: 23px 25px auto auto; color: rgba(31,35,40,.09); font: 700 58px/1 var(--serif); }
.guide-topic { margin: 0 0 24px; color: var(--accent-strong); font: 800 11px/1 var(--mono); letter-spacing: .09em; text-transform: uppercase; }
.guide-card h2 { position: relative; margin: 0; max-width: 560px; font: 600 clamp(28px, 3.5vw, 42px)/1.08 var(--serif); letter-spacing: -.03em; }
.guide-card:not(.featured) h2 { font-size: clamp(24px, 2.7vw, 32px); }
.guide-card h2 a { color: inherit; text-decoration: none; }
.guide-card h2 a::after { content: ""; position: absolute; inset: 0; }
.guide-card > p:not(.guide-topic) { max-width: 610px; margin: 18px 0 0; color: var(--muted); }
.guide-card ul { margin: 24px 0 0; padding-inline-start: 20px; color: #444a52; font-size: 13px; }
.guide-card li { margin-block: 8px; }
.guide-link { position: relative; z-index: 1; display: inline-flex; gap: 8px; margin-block-start: 28px; color: var(--accent-strong); font-size: 13px; font-weight: 800; text-decoration: none; }
.guide-link:hover { color: var(--ink); }
.learning-path { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: clamp(42px, 8vw, 100px); align-items: start; }
.learning-path h2 { margin: 0; font: 600 clamp(36px, 5vw, 56px)/1.05 var(--serif); letter-spacing: -.035em; }
.learning-path ol { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; counter-reset: learning-step; }
.learning-path li { position: relative; min-height: 88px; padding: 0 0 26px 58px; border-inline-start: 1px solid var(--line); counter-increment: learning-step; }
.learning-path li:last-child { min-height: 0; padding-block-end: 0; border-color: transparent; }
.learning-path li::before { content: counter(learning-step); position: absolute; inset: 0 auto auto -19px; width: 36px; height: 36px; display: grid; place-items: center; border-radius: 50%; background: var(--ink); color: #fff; font: 800 11px/1 var(--mono); }
.learning-path strong, .learning-path span { display: block; }
.learning-path span { margin-block-start: 5px; color: var(--muted); font-size: 14px; }

.article-hero .page-lead { max-width: 780px; }
.article-prose { font-size: 16px; line-height: 1.72; }
.article-prose .article-lede { margin: 0 0 42px; color: var(--ink); font: 500 clamp(21px, 2.5vw, 27px)/1.45 var(--serif); letter-spacing: -.012em; }
.article-prose h2 { scroll-margin-top: 110px; }
.article-prose a { text-underline-offset: 3px; }
.decision-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-block: 24px; }
.decision-grid > div { padding: 20px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
.decision-grid strong, .decision-grid span { display: block; }
.decision-grid span { margin-block-start: 7px; color: var(--muted); font-size: 13px; line-height: 1.55; }
.definition-list { display: grid; gap: 10px; margin-block: 24px; }
.definition-list > div { display: grid; grid-template-columns: 140px 1fr; gap: 22px; padding: 18px 20px; border: 1px solid var(--line); border-radius: 13px; background: var(--surface); }
.definition-list dt { color: var(--ink); font-weight: 800; }
.definition-list dd { margin: 0; color: var(--muted); }
.review-sequence { margin-block: 25px; padding: 0 !important; list-style: none; counter-reset: review-step; }
.review-sequence li { position: relative; min-height: 72px; margin: 0 !important; padding: 3px 0 26px 54px; counter-increment: review-step; }
.review-sequence li::before { content: counter(review-step); position: absolute; inset: 0 auto auto 0; width: 36px; height: 36px; display: grid; place-items: center; border-radius: 11px; background: var(--accent-soft); color: var(--accent-strong); font: 800 12px/1 var(--mono); }
.review-sequence strong, .review-sequence span { display: block; }
.review-sequence span { margin-block-start: 4px; color: var(--muted); font-size: 14px; }
.signal-scale { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin-block: 26px; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; }
.signal-scale > div { padding: 20px 14px; background: var(--surface); text-align: center; }
.signal-scale > div + div { border-inline-start: 1px solid var(--line); }
.signal-scale strong, .signal-scale span { display: block; }
.signal-scale strong { font: 700 27px/1 var(--serif); }
.signal-scale span { margin-block-start: 8px; color: var(--muted); font-size: 11px; line-height: 1.35; }
.pgn-sample { overflow-x: auto; margin-block: 24px; padding: 22px; border: 1px solid var(--line); border-radius: 14px; background: var(--ink); color: #f6f1e7; font: 650 13px/1.75 var(--mono); }
.pgn-sample code { padding: 0; background: none; color: inherit; }
.position-card { margin-block: 28px; padding: 24px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); box-shadow: var(--shadow-soft); }
.position-card h3 { margin-block-start: 0; }
.position-card .position-label { margin: 0 0 10px; color: var(--accent-strong); font: 800 10px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.position-card .fen { overflow-wrap: anywhere; margin-block: 16px 0; padding: 13px 15px; border-radius: 10px; background: var(--surface-soft); color: var(--ink); font: 650 12px/1.6 var(--mono); }
.position-card .move-sequence { color: var(--muted); font-size: 13px; }
.signal-checklist { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-block: 25px; padding: 0 !important; list-style: none; }
.signal-checklist li { margin: 0 !important; padding: 18px 18px 18px 48px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); position: relative; }
.signal-checklist li::before { content: ""; position: absolute; inset: 20px auto auto 20px; width: 12px; height: 12px; border: 3px solid var(--accent); border-radius: 50%; }
.signal-checklist strong, .signal-checklist span { display: block; }
.signal-checklist span { margin-block-start: 5px; color: var(--muted); font-size: 13px; line-height: 1.5; }
.related-guides { padding-block: 0 100px; }
.related-guides h2 { margin: 0 0 20px; font: 600 34px/1.1 var(--serif); letter-spacing: -.025em; }
.related-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.related-grid a { display: block; padding: 23px; border: 1px solid var(--line); border-radius: 15px; background: var(--surface); text-decoration: none; box-shadow: var(--shadow-soft); }
.related-grid span, .related-grid strong { display: block; }
.related-grid span { margin-block-end: 8px; color: var(--accent-strong); font: 800 10px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.related-grid strong { color: var(--ink); }
.related-grid a:hover { border-color: #bbb3a4; transform: translateY(-2px); }

.site-footer { border-top: 1px solid var(--line); background: rgba(255,255,255,.54); }
.footer-grid { display: grid; grid-template-columns: 1.1fr repeat(3, 1fr); gap: 48px; padding-block: 58px 42px; }
.footer-brand p { max-width: 330px; margin: 14px 0 0; color: var(--muted); font-size: 12px; }
.footer-col strong { display: block; margin-block-end: 10px; font-size: 11px; text-transform: uppercase; letter-spacing: .08em; }
.footer-col a, .footer-col button { display: block; width: fit-content; margin-block: 7px; border: 0; padding: 0; background: none; color: var(--muted); font: 600 12px/1.4 var(--sans); text-decoration: none; cursor: pointer; }
.footer-col a:hover, .footer-col button:hover { color: var(--accent-strong); }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-block: 20px 26px; border-top: 1px solid var(--line); color: var(--faint); font-size: 11px; }

@media (max-width: 930px) {
  .nav-shell { flex-wrap: wrap; gap: 8px 16px; padding-block: 12px; }
  .site-nav { order: 3; width: 100%; overflow-x: auto; margin: 0; padding-block-start: 5px; }
  .nav-cta { margin-inline-start: auto; }
  .hero { grid-template-columns: 1fr; }
  .review-preview { max-width: 620px; transform: none; }
  .proof-grid { grid-template-columns: 1fr 1fr; }
  .guide-grid { grid-template-columns: 1fr; }
  .guide-card.featured { grid-row: auto; }
  .learning-path { grid-template-columns: 1fr; }
  .proof-item:nth-child(odd) { border-inline-start: 1px solid var(--line); }
  .steps, .feature-grid, .trust-grid { grid-template-columns: 1fr 1fr; }
  .content-layout { grid-template-columns: 1fr; gap: 32px; }
  .toc { position: static; order: -1; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 620px) {
  .nav-shell { width: min(calc(100% - 22px), var(--max)); }
  .brand span { display: none; }
  .site-nav a { padding-inline: 9px; }
  .nav-cta { min-height: 40px; padding-inline: 12px; }
  .shell { width: min(calc(100% - 24px), var(--max)); }
  .hero { min-height: auto; padding-block-start: 56px; }
  .hero h1, .page-hero h1 { letter-spacing: -.035em; }
  .review-preview { padding: 15px; }
  .review-preview::before { display: none; }
  .proof-grid, .steps, .feature-grid, .trust-grid, .footer-grid { grid-template-columns: 1fr; }
  .proof-item { border-inline-start: 1px solid var(--line); }
  .cta-panel { grid-template-columns: 1fr; }
  .decision-grid, .related-grid { grid-template-columns: 1fr; }
  .signal-checklist { grid-template-columns: 1fr; }
  .definition-list > div { grid-template-columns: 1fr; gap: 6px; }
  .signal-scale { grid-template-columns: 1fr 1fr; }
  .signal-scale > div:nth-child(3) { border-inline-start: 0; border-block-start: 1px solid var(--line); }
  .signal-scale > div:nth-child(4) { border-block-start: 1px solid var(--line); }
  .example { grid-template-columns: 1fr; }
  .example-score { min-height: 120px; }
  .footer-bottom { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}