:root {
  --ink: #0b0b0b;
  --surface: #212121;
  --border: #353535;
  --paper: #f4f1ea;
  --white: #fff;
  --silver: #b9b9b9;
  --muted: #686868;
  --blue: #0052ef;
  --coral: #f36458;
  --green: #43e675;
  --max: 1240px;
  --reading: 760px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; overflow-x: hidden; background: var(--ink); color: var(--white); font-family: "Space Grotesk", Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.55; }
a { color: inherit; text-underline-offset: .18em; }
a:hover { color: var(--blue); }
a:focus-visible, button:focus-visible { outline: 3px solid #55beff; outline-offset: 4px; }
img { max-width: 100%; }

.skip-link { position: fixed; z-index: 20; left: 16px; top: 12px; transform: translateY(-180%); background: var(--white); color: var(--ink); padding: 12px 16px; }
.skip-link:focus { transform: none; }
.shell { width: min(calc(100% - 48px), var(--max)); margin-inline: auto; }
.narrow { max-width: 920px; }

.site-header { position: sticky; z-index: 10; top: 0; background: rgba(11,11,11,.94); border-bottom: 1px solid var(--surface); backdrop-filter: blur(14px); }
.nav-wrap { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 650; text-decoration: none; letter-spacing: -.02em; }
.brand-mark { width: 36px; height: 36px; display: block; flex: 0 0 auto; }
.brand sup { align-self: flex-start; margin: 7px 0 0 -6px; color: var(--coral); font-family: ui-monospace, "SFMono-Regular", Menlo, monospace; font-size: .62rem; letter-spacing: 0; }
nav { display: flex; align-items: center; gap: 8px; }
nav a { min-height: 44px; display: inline-flex; align-items: center; padding: 0 14px; border-radius: 999px; color: var(--silver); text-decoration: none; }
nav a:hover { background: var(--blue); color: var(--white); }

.eyebrow { margin: 0 0 14px; color: var(--silver); font-family: ui-monospace, "SFMono-Regular", Menlo, monospace; font-size: .72rem; font-weight: 700; letter-spacing: .11em; text-transform: uppercase; }
.eyebrow.signal { color: var(--green); }
.eyebrow.dark { color: #4f4f4f; }
.hero { padding: 108px 0 84px; overflow: hidden; border-bottom: 1px solid var(--surface); }
.hero h1, .page-hero h1, .article-hero h1 { max-width: 1000px; margin: 0; overflow-wrap: anywhere; font-size: clamp(3rem, 8vw, 7rem); font-weight: 520; line-height: .94; letter-spacing: -.065em; }
.hero h1 span { color: var(--silver); }
.hero-copy { max-width: 680px; margin: 34px 0 0; color: var(--silver); font-size: clamp(1.08rem, 2vw, 1.35rem); }
.hero-actions { margin-top: 34px; display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; border-radius: 999px; background: var(--coral); color: var(--ink); padding: 0 22px; font-weight: 700; text-decoration: none; }
.button:hover { background: var(--blue); color: var(--white); }
.button.secondary { background: var(--ink); color: var(--white); }
.text-link { min-height: 44px; display: inline-flex; align-items: center; color: var(--white); font-weight: 650; }
.proof-row { max-width: 680px; margin-top: 70px; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--border); }
.proof-row div { padding: 20px 18px 0 0; }
.proof-row strong { display: block; font-size: 1.8rem; font-weight: 520; }
.proof-row span { display: block; color: var(--silver); font-size: .85rem; }

.light-section { background: var(--paper); color: var(--ink); padding: 88px 0 104px; }
.section-heading { margin-bottom: 44px; display: grid; grid-template-columns: 1.2fr .8fr; align-items: end; gap: 48px; }
.section-heading h2 { max-width: 700px; margin: 0; font-size: clamp(2.3rem, 5vw, 4.6rem); line-height: 1; letter-spacing: -.055em; font-weight: 520; }
.section-heading > p { color: #4f4f4f; font-size: 1.02rem; }
.card-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid #bcb8ae; border-left: 1px solid #bcb8ae; }
.content-card { min-height: 290px; padding: 30px; border-right: 1px solid #bcb8ae; border-bottom: 1px solid #bcb8ae; }
.content-card h3 { margin: 0 0 15px; font-size: clamp(1.45rem, 2.4vw, 2rem); line-height: 1.1; letter-spacing: -.035em; font-weight: 560; }
.content-card h3 a { text-decoration: none; }
.content-card > p:not(.eyebrow) { color: #4f4f4f; }
.card-meta { margin-top: 28px; color: #626262; font-family: ui-monospace, "SFMono-Regular", Menlo, monospace; font-size: .75rem; }

.principles { padding: 92px 0 110px; }
.principle-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--border); }
.principle-grid > div { padding: 28px 32px 0 0; }
.principle-grid span, .candidate-number { color: var(--coral); font-family: ui-monospace, "SFMono-Regular", Menlo, monospace; font-size: .75rem; }
.principle-grid h2 { margin: 34px 0 12px; font-size: 1.75rem; letter-spacing: -.035em; }
.principle-grid p { color: var(--silver); }

.page-hero, .article-hero { padding: 76px 0 68px; border-bottom: 1px solid var(--surface); }
.page-hero h1, .article-hero h1 { font-size: clamp(3rem, 7vw, 6.2rem); }
.dek { max-width: 800px; margin: 28px 0 0; color: var(--silver); font-size: clamp(1.1rem, 2.2vw, 1.35rem); }
.date-row { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 10px 24px; color: var(--silver); font-family: ui-monospace, "SFMono-Regular", Menlo, monospace; font-size: .76rem; }
.back-link { min-height: 44px; display: inline-flex; align-items: center; margin-bottom: 44px; color: var(--silver); }
.article-width { width: min(calc(100% - 48px), 930px); margin-inline: auto; }
.notice { margin-top: 30px; border: 1px solid #6d594a; background: #251d18; color: #e8d8cb; padding: 18px 20px; border-radius: 6px; }

.article-layout { padding: 64px 0 110px; display: grid; grid-template-columns: minmax(0, var(--reading)) 240px; justify-content: center; align-items: start; gap: 80px; }
.article-body { background: var(--paper); color: var(--ink); border-radius: 6px; overflow: hidden; }
.article-body > section, .article-body > aside { padding: 48px 56px; margin: 0; border-bottom: 1px solid #ccc7bd; }
.article-body h2 { margin: 0 0 16px; font-size: clamp(1.8rem, 3.5vw, 2.75rem); line-height: 1.08; letter-spacing: -.045em; font-weight: 560; }
.article-body h3 { margin: 8px 0; font-size: 1.35rem; }
.article-body p { max-width: 68ch; }
.article-body a { color: #003fb8; }
.article-body .eyebrow { color: #5b5b5b; }
.article-rail { position: sticky; top: 112px; display: flex; flex-direction: column; }
.article-rail a { min-height: 42px; display: flex; align-items: center; border-top: 1px solid var(--surface); color: var(--silver); font-size: .9rem; text-decoration: none; }
.article-rail a:hover { color: var(--white); }
.verdict { background: var(--white); }
.split-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
ul, ol { padding-left: 1.25rem; }
li { margin-block: .7rem; }
.check-list { list-style: "✓  "; }
.check-list li::marker { color: #0b7d2a; }
.item-id, .muted { color: var(--muted); }
dl { margin: 28px 0 0; }
dl div { display: grid; grid-template-columns: minmax(140px, .6fr) 1fr; gap: 20px; padding: 13px 0; border-top: 1px solid #ccc7bd; }
dt { color: var(--muted); }
dd { margin: 0; }
.source-ref { display: inline-block; margin-left: 4px; font-family: ui-monospace, "SFMono-Regular", Menlo, monospace; font-size: .68rem; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { min-width: 160px; padding: 14px; border: 1px solid #bbb6ac; text-align: left; vertical-align: top; }
thead { background: var(--ink); color: var(--white); }
.candidate-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.candidate { padding: 22px; border: 1px solid #bbb6ac; }
.rubric { padding: 0; list-style: none; counter-reset: rubric; }
.rubric li { display: grid; grid-template-columns: 1fr 1.4fr; gap: 20px; margin: 0; padding: 14px 0; border-top: 1px solid #bbb6ac; }
.rubric span { color: var(--muted); }
.source-list li { padding: 12px 0; }
.source-list span { display: block; color: var(--muted); font-size: .82rem; }
.source-list p { margin: 5px 0 0; }
.correction-callout { background: #dde7ff; }
.affiliate-recommendation { background: #fff4d6; }
.affiliate-link-disclosure { margin: 0 0 8px; color: #633d00; font-weight: 700; }
.affiliate-link { display: inline-flex; min-height: 44px; align-items: center; }
.trust-body { grid-column: 1; }
.trust-body .notice { margin: 0; border-radius: 0; background: #251d18; color: #e8d8cb; }

.site-footer { border-top: 1px solid var(--surface); padding: 68px 0 30px; color: var(--silver); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; }
.footer-grid > div { display: flex; flex-direction: column; align-items: flex-start; }
.footer-grid a { min-height: 36px; display: inline-flex; align-items: center; text-decoration: none; }
.footer-brand { color: var(--white); }
.fine-print { margin-top: 52px; padding-top: 22px; border-top: 1px solid var(--surface); font-family: ui-monospace, "SFMono-Regular", Menlo, monospace; font-size: .72rem; }
.fine-print p { margin: 0 0 8px; }
.amazon-associate-disclosure { color: var(--white); font-weight: 700; }

@media (max-width: 900px) {
  .article-layout { grid-template-columns: 1fr; gap: 34px; }
  .article-rail { position: static; grid-row: 1; }
  .section-heading { grid-template-columns: 1fr; gap: 16px; }
  .principle-grid { grid-template-columns: 1fr; }
  .principle-grid > div { padding-bottom: 32px; border-bottom: 1px solid var(--surface); }
}

@media (max-width: 680px) {
  .shell, .article-width { width: auto; max-width: none; margin-inline: 16px; }
  .nav-wrap { padding: 12px 0; align-items: flex-start; flex-direction: column; }
  nav { width: 100%; overflow-x: auto; }
  nav a { padding-inline: 10px; white-space: nowrap; }
  .hero { padding: 72px 0 58px; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .hero h1, .page-hero h1, .article-hero h1 { letter-spacing: -.045em; }
  .proof-row, .card-grid, .split-grid, .candidate-grid, .footer-grid { grid-template-columns: 1fr; }
  .card-grid { border-left: 0; }
  .content-card { border-left: 1px solid #bcb8ae; }
  .article-body > section, .article-body > aside { padding: 34px 24px; }
  .article-layout { padding-top: 34px; }
  dl div, .rubric li { grid-template-columns: 1fr; gap: 4px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}