:root {
  color-scheme: dark;
  --paper: #090b0e;
  --paper-soft: #0f1216;
  --ink: #f1eee7;
  --muted: #9ba0a5;
  --dim: #6e747b;
  --line: rgba(255, 255, 255, .12);
  --line-strong: rgba(255, 255, 255, .22);
  --gold: #c9a45c;
  --gold-light: #e5c783;
  --blue: #8ca9bf;
  --serif: ui-serif, "Songti SC", "STSong", "Noto Serif CJK SC", Georgia, serif;
  --sans: Inter, "SF Pro Display", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background:
    radial-gradient(circle at 80% 2%, rgba(201, 164, 92, .07), transparent 28rem),
    linear-gradient(90deg, transparent 49.9%, rgba(255,255,255,.018) 50%, transparent 50.1%),
    var(--paper);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; }
::selection { color: #080a0b; background: var(--gold-light); }

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 100;
  transform: translateY(-160%);
  padding: .65rem 1rem;
  border-radius: 999px;
  color: var(--paper);
  background: var(--ink);
}
.skip-link:focus { transform: none; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(9, 11, 14, .88);
  backdrop-filter: blur(16px);
}

.nav,
.shell {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  font-size: .79rem;
  font-weight: 720;
  letter-spacing: .11em;
  text-transform: uppercase;
}
.brand-mark {
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  border: 1px solid var(--gold);
  border-radius: 50%;
  font-family: var(--serif);
  font-size: .69rem;
  color: var(--gold-light);
}
.nav-links { display: flex; align-items: center; gap: 1.45rem; color: #bfc3c6; font-size: .81rem; }
.nav-links a { padding: .45rem 0; border-bottom: 1px solid transparent; }
.nav-links a:hover,
.nav-links a:focus-visible { color: var(--ink); border-color: var(--gold); }

.issue-hero {
  padding: clamp(5rem, 10vw, 9rem) 0 clamp(4.5rem, 8vw, 7rem);
  border-bottom: 1px solid var(--line);
}
.issue-grid {
  display: grid;
  grid-template-columns: minmax(0, .72fr) minmax(300px, 1.28fr);
  align-items: end;
  gap: clamp(2rem, 7vw, 7rem);
}
.issue-label {
  margin: 0 0 1.3rem;
  color: var(--gold-light);
  font-size: .7rem;
  font-weight: 760;
  letter-spacing: .18em;
  text-transform: uppercase;
}
.issue-number {
  display: block;
  color: rgba(255,255,255,.08);
  font-family: var(--serif);
  font-size: clamp(6.5rem, 17vw, 13rem);
  line-height: .72;
  letter-spacing: -.09em;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  max-width: 14ch;
  margin-bottom: 1.5rem;
  font-family: var(--serif);
  font-size: clamp(3rem, 7vw, 6.5rem);
  font-weight: 520;
  line-height: 1.04;
  letter-spacing: -.055em;
}
.issue-deck {
  max-width: 43rem;
  margin: 0;
  color: #bec2c4;
  font-size: clamp(1.04rem, 1.7vw, 1.25rem);
  line-height: 1.9;
}

.section { padding: clamp(5rem, 9vw, 8rem) 0; border-bottom: 1px solid var(--line); }
.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2.5rem;
}
.kicker { margin-bottom: .8rem; color: var(--gold); font-size: .68rem; font-weight: 760; letter-spacing: .18em; text-transform: uppercase; }
.section h2 {
  margin-bottom: 0;
  font-family: var(--serif);
  font-size: clamp(2.25rem, 5vw, 4.3rem);
  font-weight: 520;
  line-height: 1.08;
  letter-spacing: -.04em;
}
.section-note { max-width: 31rem; margin: 0; color: var(--muted); font-size: .91rem; }

.reading-map { border-top: 1px solid var(--line-strong); }
.reading-step {
  display: grid;
  grid-template-columns: 76px minmax(170px, .65fr) minmax(260px, 1.35fr) 36px;
  gap: 1.25rem;
  align-items: center;
  min-height: 112px;
  border-bottom: 1px solid var(--line);
}
.reading-step .index { color: var(--gold); font-family: var(--serif); font-size: .82rem; }
.reading-step h3 { margin: 0; font-family: var(--serif); font-size: clamp(1.25rem, 2vw, 1.75rem); font-weight: 520; }
.reading-step p { margin: 0; color: var(--muted); font-size: .9rem; }
.reading-step .arrow { color: var(--gold-light); font-size: 1.35rem; transition: transform .2s ease; }
.reading-step:hover .arrow { transform: translateX(5px); }

.filter-bar { display: flex; flex-wrap: wrap; gap: .55rem; margin-bottom: 2rem; }
.filter {
  min-height: 40px;
  padding: .45rem .9rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
}
.filter:hover,
.filter:focus-visible,
.filter[aria-pressed="true"] { color: var(--ink); border-color: var(--gold); background: rgba(201,164,92,.08); }

.article-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line-strong); }
.article-card {
  display: flex;
  min-height: 390px;
  flex-direction: column;
  padding: clamp(1.5rem, 3.4vw, 2.5rem);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(255,255,255,.025), transparent 55%);
  transition: background .25s ease;
}
.article-card:nth-child(odd) { border-right: 1px solid var(--line); }
.article-card[hidden] { display: none; }
.article-card:hover { background: rgba(201,164,92,.045); }
.article-meta { display: flex; justify-content: space-between; gap: 1rem; margin-bottom: 4rem; color: var(--dim); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; }
.article-card h3 { max-width: 18ch; margin-bottom: 1rem; font-family: var(--serif); font-size: clamp(1.65rem, 3.3vw, 2.55rem); font-weight: 520; line-height: 1.18; }
.article-card p { color: var(--muted); font-size: .91rem; }
.read-link { display: inline-flex; align-items: center; gap: .65rem; width: fit-content; margin-top: auto; padding-bottom: .28rem; border-bottom: 1px solid var(--gold); font-size: .82rem; font-weight: 700; }
.read-link span { color: var(--gold-light); transition: transform .2s ease; }
.read-link:hover span { transform: translateX(4px); }

.field-note { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(2rem, 7vw, 7rem); }
.field-note blockquote { margin: 0; font-family: var(--serif); font-size: clamp(1.8rem, 4vw, 3.4rem); line-height: 1.35; letter-spacing: -.03em; }
.field-note-copy { color: var(--muted); }
.field-note-copy strong { color: var(--ink); }

.site-footer { padding: 2.5rem 0 3.5rem; color: var(--dim); font-size: .76rem; }
.footer-inner { display: flex; justify-content: space-between; gap: 2rem; }
.footer-inner strong { color: #c5c8ca; }
.footer-inner a { color: #c5c8ca; text-decoration: underline; text-decoration-color: rgba(201,164,92,.45); text-underline-offset: .25rem; }
.footer-inner a:hover { color: var(--gold-light); }

/* Article */
.article-main { overflow: clip; }
.article-head { padding: clamp(4.5rem, 9vw, 8rem) 0 clamp(3.5rem, 7vw, 6rem); border-bottom: 1px solid var(--line); }
.article-head-inner { display: grid; grid-template-columns: minmax(120px, .28fr) minmax(0, 1fr); gap: clamp(2rem, 6vw, 6rem); }
.article-series { color: var(--gold-light); font-size: .7rem; font-weight: 760; letter-spacing: .16em; text-transform: uppercase; }
.article-head h1 { max-width: 15ch; margin-bottom: 1.4rem; font-size: clamp(2.75rem, 6.6vw, 6rem); }
.article-deck { max-width: 48rem; margin-bottom: 2rem; color: #c5c8c9; font-size: clamp(1.05rem, 1.8vw, 1.25rem); line-height: 1.9; }
.article-byline { display: flex; flex-wrap: wrap; gap: .65rem 1.25rem; color: var(--dim); font-size: .76rem; letter-spacing: .06em; }

.article-layout {
  display: grid;
  grid-template-columns: minmax(130px, .32fr) minmax(0, 1fr);
  gap: clamp(2rem, 6vw, 6rem);
  padding: clamp(4.5rem, 9vw, 8rem) 0;
}
.article-rail { position: sticky; top: 110px; align-self: start; color: var(--dim); font-size: .72rem; line-height: 1.65; letter-spacing: .08em; text-transform: uppercase; }
.article-rail span { display: block; margin-bottom: .6rem; color: var(--gold); }
.article-body { max-width: 760px; }
.article-body .lede { color: var(--ink); font-family: var(--serif); font-size: clamp(1.45rem, 2.7vw, 2rem); line-height: 1.65; }
.article-body p { color: #b7bbbd; font-size: 1.05rem; line-height: 2.05; }
.article-body h2 { margin: 3.6rem 0 1.15rem; font-family: var(--serif); font-size: clamp(1.8rem, 3vw, 2.5rem); font-weight: 540; line-height: 1.25; }
.article-body .callout { margin: 3.5rem 0 0; padding: 1.35rem 1.5rem; border-left: 2px solid var(--gold); color: #c8cbcc; background: rgba(201,164,92,.055); }

.article-nav { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); }
.article-nav a { min-height: 190px; padding: 2rem; border-bottom: 1px solid var(--line); }
.article-nav a:first-child { border-right: 1px solid var(--line); }
.article-nav span { display: block; margin-bottom: 2rem; color: var(--dim); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; }
.article-nav strong { display: block; max-width: 22ch; font-family: var(--serif); font-size: 1.25rem; font-weight: 520; line-height: 1.4; }
.article-nav a:hover strong { color: var(--gold-light); }

:focus-visible { outline: 2px solid var(--gold-light); outline-offset: 4px; }

@media (max-width: 820px) {
  .issue-grid,
  .field-note,
  .article-head-inner,
  .article-layout { grid-template-columns: 1fr; }
  .issue-number { font-size: 7rem; }
  .reading-step { grid-template-columns: 52px 1fr 30px; padding: 1.3rem 0; }
  .reading-step p { grid-column: 2 / -1; }
  .article-rail { position: static; }
  .article-rail br { display: none; }
}

@media (max-width: 640px) {
  .nav,
  .shell { width: min(calc(100% - 28px), var(--max)); }
  .nav { min-height: 64px; }
  .nav-links a:not(:last-child) { display: none; }
  .issue-hero { padding-top: 4rem; }
  .section-head { display: block; }
  .section-note { margin-top: 1.2rem; }
  .article-grid,
  .article-nav { grid-template-columns: 1fr; }
  .article-card:nth-child(odd),
  .article-nav a:first-child { border-right: 0; }
  .article-card { min-height: 350px; }
  .article-meta { margin-bottom: 3rem; }
  .footer-inner { flex-direction: column; gap: .6rem; }
}

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