:root {
  --ink: #171713;
  --paper: #f4f0e7;
  --white: #fffefa;
  --indigo: #173650;
  --brass: #b08a43;
  --red: #9e2f29;
  --muted: #625f57;
  --line: rgba(23, 23, 19, .18);
  --sans: Inter, "Yu Gothic", "Hiragino Kaku Gothic ProN", sans-serif;
  --serif: "Yu Mincho", "Hiragino Mincho ProN", serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0;
  color: var(--ink);
  background: linear-gradient(rgba(23,23,19,.025) 1px, transparent 1px), var(--paper);
  background-size: 100% 28px;
  font-family: var(--sans);
}
a { color: inherit; }

.article-topbar {
  position: absolute;
  z-index: 5;
  top: 0;
  left: 50%;
  width: min(1240px, calc(100% - 48px));
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  color: var(--white);
}
.article-brand { display: flex; align-items: center; gap: 10px; color: inherit; font-weight: 800; text-decoration: none; }
.article-brand__mark { display: grid; width: 38px; height: 38px; place-items: center; border: 1px solid rgba(255,255,255,.6); border-radius: 50%; font-size: .78rem; }
.back-link { color: inherit; font-size: .82rem; text-underline-offset: 5px; }
.back-link__short { display: none; }

.article-hero { position: relative; min-height: clamp(640px, 82vh, 760px); overflow: hidden; color: var(--white); background: #25221e; }
.article-hero > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 8%; }
.article-hero__shade { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(10,12,12,.92), rgba(10,12,12,.76) 34%, rgba(10,12,12,.08) 72%), linear-gradient(0deg, rgba(10,12,12,.52), transparent 50%); }
.article-hero__copy { position: absolute; z-index: 1; left: max(6vw, calc((100vw - 1240px) / 2)); bottom: clamp(58px, 9vh, 92px); width: min(590px, 52vw); }
.eyebrow, .section-number { margin: 0 0 14px; color: var(--brass); font-size: .74rem; font-weight: 900; letter-spacing: 0; text-transform: uppercase; }
.article-hero h1 { margin: 0; font-family: var(--serif); font-size: clamp(3.6rem, 5.6vw, 5.8rem); font-weight: 500; line-height: 1.03; letter-spacing: 0; }
.hero-thesis { margin: 20px 0 0; font-family: var(--serif); font-size: clamp(1.05rem, 1.55vw, 1.4rem); line-height: 1.7; }
.hero-description { max-width: 540px; margin: 14px 0 0; color: rgba(255,255,255,.76); font-size: .88rem; line-height: 1.8; }
.hero-actions { display: flex; gap: 10px; margin-top: 24px; }
.hero-actions a { display: inline-flex; min-height: 46px; align-items: center; justify-content: center; padding: 12px 17px; border: 1px solid rgba(255,255,255,.52); color: var(--white); font-size: .78rem; font-weight: 900; text-decoration: none; }
.hero-actions a:first-child { border-color: var(--white); color: var(--ink); background: var(--white); }

.article-index { position: sticky; z-index: 4; top: 0; display: flex; justify-content: center; overflow-x: auto; border-bottom: 1px solid var(--line); background: rgba(244,240,231,.95); backdrop-filter: blur(14px); }
.article-index { scrollbar-width: none; }
.article-index::-webkit-scrollbar { display: none; }
.article-index a { flex: 0 0 auto; padding: 19px 17px 16px; border-bottom: 3px solid transparent; color: var(--muted); font-size: .78rem; font-weight: 800; text-decoration: none; }
.article-index a.is-current { border-color: var(--red); color: var(--ink); }

.quick-start {
  display: grid;
  grid-template-columns: minmax(240px, .8fr) minmax(0, 1.2fr);
  gap: clamp(34px, 7vw, 96px);
  width: min(1140px, calc(100% - 48px));
  margin: 0 auto;
  padding: 72px 0;
  border-bottom: 1px solid var(--line);
}
.quick-start__heading h2 { margin: 0; font-family: var(--serif); font-size: clamp(2rem, 4vw, 3.6rem); font-weight: 500; line-height: 1.2; }
.quick-start__heading > p:last-child { margin: 20px 0 0; color: var(--muted); line-height: 1.8; }
.quick-start__steps { margin: 0; padding: 0; border-top: 2px solid var(--ink); list-style: none; }
.quick-start__steps li { display: grid; grid-template-columns: 46px 1fr; gap: 14px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.quick-start__steps span { color: var(--red); font-family: var(--serif); font-size: 1.25rem; }
.quick-start__steps strong { display: block; margin-bottom: 5px; font-size: .95rem; }
.quick-start__steps p { margin: 0; color: var(--muted); font-size: .82rem; line-height: 1.6; }
.quick-start__links { grid-column: 2; display: flex; gap: 18px; margin-top: -12px; }
.quick-start__links a { color: var(--indigo); font-size: .78rem; font-weight: 900; text-underline-offset: 5px; }

.article-layout { display: grid; grid-template-columns: 180px minmax(0, 820px); gap: clamp(36px, 7vw, 110px); width: min(1140px, calc(100% - 48px)); margin: 0 auto; padding: 92px 0 120px; }
.article-body { min-width: 0; }
.article-rail { position: sticky; top: 90px; align-self: start; color: var(--muted); font-size: .74rem; line-height: 1.7; }
.article-rail p { margin: 0 0 5px; }
.article-rail strong { display: block; color: var(--ink); font-family: var(--serif); font-size: 2rem; font-weight: 500; }
.article-rail span { display: block; }
.article-rail ul { margin: 8px 0 0; padding-left: 18px; }
.rail-rule { height: 1px; margin: 24px 0; background: var(--line); }

.article-body section { padding: 88px 0; border-bottom: 1px solid var(--line); }
.article-body section:first-child { padding-top: 0; }
.article-body h2 { max-width: 740px; margin: 0 0 30px; font-family: var(--serif); font-size: clamp(2.1rem, 5vw, 4.6rem); font-weight: 500; line-height: 1.18; letter-spacing: 0; }
.article-body h3 { letter-spacing: 0; }
.article-body > section > p:not(.section-number), .section-lead { max-width: 720px; color: var(--muted); font-size: 1rem; line-height: 2; }
.definition-block { margin: 36px 0; padding: 28px 0 28px 30px; border-left: 5px solid var(--indigo); }
.definition-block p { margin: 0; font-family: var(--serif); font-size: clamp(1.1rem, 2.4vw, 1.5rem); line-height: 1.8; }
.definition-block p + p { margin-top: 12px; }

.timeline { margin: 48px 0 0; padding: 0; list-style: none; }
.timeline li { display: grid; grid-template-columns: 120px 1fr; gap: 28px; padding: 28px 0; border-top: 1px solid var(--line); }
.timeline li > span { color: var(--red); font-weight: 900; }
.timeline h3, .root-grid h3, .essential-list h3, .rule-list h3, .outfit-grid h3, .buy-steps h3, .care-grid h3 { margin: 0 0 9px; font-size: 1.2rem; }
.timeline p, .root-grid p, .essential-list p, .rule-list p, .outfit-grid p, .buy-steps p, .care-grid p { margin: 0; color: var(--muted); line-height: 1.8; }

.root-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; margin-top: 42px; border: 1px solid var(--line); background: var(--line); }
.root-grid article { min-height: 250px; padding: 28px; background: var(--white); }
.root-grid article:last-child { grid-column: 1 / -1; min-height: 0; }
.root-grid span { display: block; margin-bottom: 42px; color: var(--brass); font-family: var(--serif); font-size: 1.8rem; }
.root-grid strong { display: block; margin-top: 22px; color: var(--indigo); font-size: .76rem; }

.essential-list { margin-top: 40px; border-top: 1px solid var(--ink); }
.essential-list article { display: grid; grid-template-columns: 52px 1fr 145px; gap: 24px; align-items: start; padding: 27px 0; border-bottom: 1px solid var(--line); }
.essential-list article > span { color: var(--red); font-family: var(--serif); font-size: 1.5rem; }
.essential-list b { color: var(--indigo); font-size: .8rem; line-height: 1.6; }

.commerce-band, .final-shop { display: grid; grid-template-columns: 1.35fr .65fr; gap: 32px; margin-top: 42px; padding: 32px; color: var(--white); background: var(--indigo); }
.commerce-band h3, .final-shop h3 { margin: 0 0 10px; font-family: var(--serif); font-size: 1.7rem; }
.commerce-band p, .final-shop p { margin: 0; color: rgba(255,255,255,.72); line-height: 1.7; }
.commerce-actions { display: grid; gap: 10px; align-content: center; }
.commerce-actions a { display: block; padding: 14px 16px; border: 1px solid rgba(255,255,255,.45); color: var(--white); font-size: .82rem; font-weight: 800; text-align: center; text-decoration: none; }
.commerce-actions a:first-child { color: var(--ink); background: var(--white); }

.comparison-wrap { width: 100%; max-width: 100%; overflow-x: auto; border-top: 2px solid var(--ink); }
table { width: 100%; min-width: 620px; border-collapse: collapse; }
th, td { padding: 20px 16px; border-bottom: 1px solid var(--line); font-size: .88rem; line-height: 1.7; text-align: left; vertical-align: top; }
thead th { color: var(--muted); font-size: .72rem; }
tbody th { color: var(--indigo); }

.rule-list { margin: 40px 0 0; padding: 0; list-style: none; }
.rule-list li { display: grid; grid-template-columns: 78px 1fr; gap: 18px; padding: 28px 0; border-top: 1px solid var(--line); }
.rule-list li > span { color: var(--brass); font-family: var(--serif); font-size: 2.2rem; }

.outfit-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-top: 40px; }
.outfit-grid article { display: flex; min-height: 390px; flex-direction: column; padding: 24px; border: 1px solid var(--line); background: var(--white); }
.outfit-grid small { color: var(--red); font-size: .72rem; font-weight: 900; }
.outfit-grid h3 { margin-top: 16px; font-family: var(--serif); font-size: 1.35rem; line-height: 1.5; }
.outfit-grid a { margin-top: auto; padding-top: 18px; color: var(--indigo); font-size: .8rem; font-weight: 900; text-underline-offset: 5px; }
.palette { display: flex; height: 18px; margin: 25px 0; }
.palette i { flex: 1; }
.p1 i:first-child { background: #aaa9a3; } .p1 i:nth-child(2) { background: #173650; } .p1 i:last-child { background: #5b3824; }
.p2 i:first-child { background: #244762; } .p2 i:nth-child(2) { background: #f5f2e8; } .p2 i:last-child { background: #596044; }
.p3 i:first-child { background: #88352f; } .p3 i:nth-child(2) { background: #e8e0cf; } .p3 i:last-child { background: #8a6849; }

.buy-steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.buy-steps article { padding: 24px 18px; border-right: 1px solid var(--line); }
.buy-steps article:last-child { border-right: 0; }
.buy-steps span { display: block; margin-bottom: 38px; color: var(--red); font-size: .7rem; font-weight: 900; text-transform: uppercase; }
.buy-steps p { font-size: .84rem; }

.care-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 30px 44px; margin-top: 40px; }
.care-grid article { padding-top: 20px; border-top: 3px solid var(--brass); }
.glossary { margin: 40px 0 0; border-top: 1px solid var(--ink); }
.glossary div { display: grid; grid-template-columns: 150px 1fr; gap: 24px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.glossary dt { color: var(--indigo); font-weight: 900; }
.glossary dd { margin: 0; color: var(--muted); line-height: 1.8; }

.summary-section { border-bottom: 0 !important; text-align: center; }
.summary-section h2, .summary-section > p { margin-right: auto !important; margin-left: auto !important; }
.diagnosis-return { display: inline-block; margin-top: 22px; padding: 15px 22px; color: var(--white); background: var(--red); font-size: .84rem; font-weight: 900; text-decoration: none; }
.article-sources { padding: 30px 0; color: var(--muted); font-size: .75rem; line-height: 1.8; }
.article-sources h2 { margin: 0 0 10px; color: var(--ink); font-family: var(--sans); font-size: .9rem; font-weight: 900; }
.article-sources p { margin: 0; }
.article-sources ul { margin: 13px 0; padding-left: 18px; }
.article-sources a { text-underline-offset: 3px; }
.affiliate-note { padding-top: 12px; border-top: 1px solid var(--line); }

@media (max-width: 960px) {
  .article-hero__copy { width: min(590px, 68vw); }
  .article-rail { display: none; }
  .quick-start { grid-template-columns: 1fr; width: min(820px, calc(100% - 40px)); }
  .quick-start__links { grid-column: auto; margin-top: 0; }
  .article-layout { grid-template-columns: 1fr; width: min(820px, calc(100% - 40px)); }
  .outfit-grid { grid-template-columns: 1fr; }
  .outfit-grid article { min-height: 0; }
  .buy-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .buy-steps article:nth-child(2) { border-right: 0; }
  .buy-steps article:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
}

@media (max-width: 620px) {
  .article-topbar { left: 16px; width: calc(100% - 32px); transform: none; }
  .article-brand { flex: 0 0 auto; font-size: .88rem; }
  .back-link { display: none; }
  .article-hero { min-height: 720px; }
  .article-hero > img { object-position: 56% center; }
  .article-hero__shade { background: linear-gradient(0deg, rgba(10,12,12,.94), rgba(10,12,12,.64) 54%, rgba(10,12,12,.08) 82%); }
  .article-hero__copy { left: 20px; bottom: 48px; width: calc(100% - 40px); }
  .article-hero h1 { font-size: clamp(3.1rem, 15vw, 4.2rem); line-height: 1.03; }
  .hero-thesis { max-width: 340px; font-size: .96rem; }
  .hero-description { display: none; }
  .hero-actions { flex-wrap: wrap; }
  .hero-actions a { min-height: 44px; }
  .article-index { justify-content: flex-start; }
  .article-index a { padding: 15px 13px 12px; }
  .quick-start { width: calc(100% - 32px); padding: 56px 0; }
  .quick-start__links { flex-direction: column; gap: 10px; }
  .article-layout { width: calc(100% - 32px); padding: 64px 0 80px; }
  .article-body section { padding: 64px 0; }
  .article-body h2 { max-width: 100%; font-size: clamp(2rem, 8.5vw, 3.2rem); overflow-wrap: anywhere; }
  .definition-block { padding-right: 8px; padding-left: 20px; }
  .timeline li { grid-template-columns: 1fr; gap: 8px; }
  .root-grid, .care-grid { grid-template-columns: 1fr; }
  .root-grid article:last-child { grid-column: auto; }
  .essential-list article { grid-template-columns: 40px 1fr; }
  .essential-list b { grid-column: 2; }
  .commerce-band, .final-shop { grid-template-columns: 1fr; padding: 24px 20px; }
  .rule-list li { grid-template-columns: 54px 1fr; }
  .buy-steps { grid-template-columns: 1fr; }
  .buy-steps article { border-right: 0; border-bottom: 1px solid var(--line); }
  .buy-steps article:last-child { border-bottom: 0; }
  .glossary div { grid-template-columns: 1fr; gap: 7px; }
}