@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Manrope:wght@400;500;600;700;800&family=Noto+Serif+SC:wght@500;600;700;900&display=swap');

:root {
  --ink: #192b2a;
  --paper: #f2f0e8;
  --cream: #e4dfd2;
  --gold: #e8b85f;
  --teal: #7db5ae;
  --muted: #68756e;
  --line: rgba(25, 43, 42, .18);
  --sans: 'Manrope', 'PingFang SC', sans-serif;
  --serif: 'Noto Serif SC', 'Songti SC', serif;
  --mono: 'DM Mono', 'SFMono-Regular', monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); }
a { color: inherit; text-decoration: none; }
.reader-shell { min-height: 100vh; display: grid; grid-template-columns: minmax(220px, 300px) minmax(0, 1fr); }
.reader-rail { padding: 28px clamp(22px, 4vw, 54px); background: var(--ink); color: var(--paper); display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh; }
.back-link { color: #a7b7af; font: 11px var(--mono); letter-spacing: .05em; margin-bottom: 75px; display: inline-flex; gap: 9px; align-items: center; transition: color .2s ease; }
.back-link:hover { color: var(--gold); }
.rail-kicker { color: var(--gold); font: 10px var(--mono); letter-spacing: .12em; margin: 0 0 15px; }
.rail-title { font: 700 clamp(24px, 3vw, 34px)/1.15 var(--serif); letter-spacing: -.07em; margin: 0; }
.rail-rule { height: 1px; background: rgba(242, 240, 232, .2); margin: 28px 0; }
.rail-meta { color: #9aa9a1; font: 12px/1.7 var(--serif); margin: 0; }
.rail-foot { margin-top: auto; color: #71847b; font: 10px/1.6 var(--mono); }
.rail-foot strong { display: block; color: #dce4dd; font-weight: 500; margin-bottom: 4px; }
.reader-main { min-width: 0; }
.reader-topbar { max-width: 1040px; margin: auto; padding: 26px clamp(24px, 7vw, 100px) 17px; display: flex; justify-content: space-between; border-bottom: 1px solid var(--line); color: var(--muted); font: 10px var(--mono); letter-spacing: .08em; }
.reader-topbar .progress { color: #a67a40; }
.article-wrap { max-width: 1040px; padding: 76px clamp(24px, 7vw, 100px) 90px; margin: auto; }
.article-hero { display: grid; grid-template-columns: minmax(0, 1fr) 210px; gap: 50px; align-items: end; padding-bottom: 47px; border-bottom: 1px solid var(--line); }
.article-eyebrow { color: #9b7040; font: 10px var(--mono); letter-spacing: .1em; margin: 0 0 16px; }
.article-title { font: 900 clamp(45px, 7vw, 82px)/1.03 var(--serif); letter-spacing: -.09em; margin: 0; }
.article-dek { max-width: 600px; color: #5f6b65; font: 17px/1.8 var(--serif); margin: 24px 0 0; }
.article-index { border-left: 2px solid var(--gold); padding-left: 18px; align-self: end; }.article-index span { display: block; color: #8c968e; font: 10px var(--mono); margin-bottom: 8px; }.article-index strong { display: block; font: 700 18px/1.35 var(--serif); }.article-index small { display: block; color: #79847d; font-size: 11px; margin-top: 7px; }
.article-grid { display: grid; grid-template-columns: minmax(0, 1fr) 235px; gap: clamp(34px, 7vw, 88px); padding-top: 46px; }
.article-content { min-width: 0; }.article-content h2 { font: 700 28px/1.3 var(--serif); letter-spacing: -.05em; margin: 0 0 16px; }.article-content h3 { font: 700 18px/1.4 var(--serif); margin: 32px 0 11px; }.article-content p { color: #55625b; font: 15px/1.85 var(--serif); margin: 0 0 16px; }.article-content ul, .article-content ol { color: #55625b; font: 14px/1.8 var(--serif); padding-left: 23px; margin: 10px 0 26px; }.article-content li { padding-left: 5px; margin: 5px 0; }.article-content strong { color: var(--ink); }
.step-list { list-style: none; padding: 0 !important; margin: 28px 0 36px !important; border-top: 1px solid var(--line); }.step-list li { display: grid; grid-template-columns: 38px 1fr; gap: 15px; padding: 17px 0; border-bottom: 1px solid var(--line); margin: 0; }.step-list .step-no { color: #a7783e; font: 11px var(--mono); padding-top: 3px; }.step-list strong { display: block; font: 700 16px/1.4 var(--serif); }.step-list span:last-child { color: #68746d; font: 14px/1.75 var(--serif); }
.checklist { padding: 18px 20px 18px 19px; border-left: 3px solid var(--teal); background: rgba(125, 181, 174, .13); margin: 28px 0; }.checklist h3 { margin: 0 0 9px; font-size: 16px; }.checklist ul { margin: 0; padding-left: 18px; }
.warning { padding: 18px 20px; background: #e8d5b6; color: #614c2f; font: 12px/1.7 var(--sans); margin-top: 30px; }.warning strong { color: #493a25; display: block; margin-bottom: 4px; }
.article-aside { border-top: 1px solid var(--line); padding-top: 15px; height: max-content; }.aside-label { color: #9b7040; font: 10px var(--mono); letter-spacing: .1em; margin: 0 0 14px; }.spec-table { width: 100%; border-collapse: collapse; font-size: 11px; }.spec-table tr { border-bottom: 1px solid var(--line); }.spec-table th { color: #77827b; font-weight: 500; text-align: left; padding: 9px 0; }.spec-table td { color: var(--ink); text-align: right; padding: 9px 0; font-family: var(--mono); font-size: 10px; }.related { margin-top: 46px; }.related a { display: block; border-top: 1px solid var(--line); padding: 13px 0; font: 700 13px var(--serif); }.related a:hover { color: #9b7040; }.related small { display: block; color: #7a857e; font: 10px var(--mono); margin-top: 5px; }
.article-nav { display: flex; justify-content: space-between; border-top: 1px solid var(--line); margin-top: 60px; padding-top: 19px; font: 11px var(--mono); color: #68756e; }.article-nav a:hover { color: #9b7040; }
@media (max-width: 820px) { .reader-shell { display: block; }.reader-rail { min-height: 0; height: auto; position: relative; padding: 20px 24px; display: grid; grid-template-columns: 1fr auto; gap: 10px 20px; }.back-link { margin: 0; }.rail-kicker { margin: 0; grid-column: 1; grid-row: 2; }.rail-title, .rail-rule, .rail-meta, .rail-foot { display: none; }.article-wrap { padding-top: 50px; }.article-grid { grid-template-columns: 1fr; }.article-aside { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }.related { margin-top: 0; } }
@media (max-width: 560px) { .reader-topbar { padding: 17px 20px 12px; }.article-wrap { padding: 44px 20px 65px; }.article-hero { display: block; }.article-index { margin-top: 28px; }.article-title { font-size: 49px; }.article-dek { font-size: 15px; }.article-grid { padding-top: 36px; }.article-aside { display: block; }.related { margin-top: 38px; }.article-nav { gap: 20px; flex-wrap: wrap; } }
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }