:root {
  --paper: #f3efe6;
  --paper-2: #ebe5d8;
  --ink: #11100e;
  --muted: #6d675d;
  --line: #d5cbbb;
  --accent: #b9271f;
  --shadow: rgba(44, 36, 25, 0.16);
  --font-sans: "Helvetica Neue", Arial, "Noto Sans SC", "PingFang SC", sans-serif;
  --font-serif: "Times New Roman", "Songti SC", "Noto Serif SC", serif;
  --max: 1280px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.55;
  letter-spacing: -0.01em;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  opacity: 0.16;
  mix-blend-mode: multiply;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(0,0,0,.08) 0 1px, transparent 1px),
    radial-gradient(circle at 70% 60%, rgba(0,0,0,.06) 0 1px, transparent 1px);
  background-size: 7px 7px, 11px 11px;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  height: 54px;
  padding: 0 28px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  border-bottom: 1px solid rgba(17,16,14,.08);
  backdrop-filter: blur(14px);
  background: rgba(243,239,230,.82);
}

.brand {
  font-weight: 600;
  font-size: 13px;
  letter-spacing: .02em;
}

.nav {
  display: flex;
  gap: 26px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--muted);
}
.nav a:hover { color: var(--ink); }

.section {
  width: min(var(--max), calc(100vw - 56px));
  margin: 0 auto;
}

.hero {
  min-height: 100vh;
  padding: 92px 0 60px;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  grid-template-rows: auto 1fr auto;
  column-gap: 52px;
  align-items: center;
}

.hero-meta {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  font-size: 10px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.hero-title { align-self: end; }
.eyebrow,
.small-title,
.section-label,
.note-kicker {
  margin: 0 0 14px;
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
}

.hero h1 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(48px, 8vw, 112px);
  line-height: .9;
  letter-spacing: .02em;
}

.subtitle {
  margin: 18px 0 0;
  font-family: var(--font-serif);
  font-size: clamp(18px, 2.2vw, 32px);
  line-height: 1.05;
  max-width: 520px;
}

.cover-object {
  margin: 0;
  align-self: center;
  justify-self: end;
  width: min(520px, 42vw);
  background: #faf7ef;
  border: 1px solid var(--line);
  padding: 18px;
  box-shadow: 0 22px 54px var(--shadow);
  transform: rotate(-1.2deg);
}

.cover-object img,
.image-fallback {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  background: linear-gradient(135deg, #e8e0d1, #f7f3eb);
  border: 1px solid rgba(17,16,14,.1);
}

.image-fallback {
  display: grid;
  place-items: center;
  color: var(--muted);
  text-align: center;
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.cover-object figcaption {
  display: flex;
  justify-content: space-between;
  margin-top: 12px;
  font-size: 10px;
  color: var(--muted);
  letter-spacing: .08em;
  text-transform: uppercase;
}

.hero-statement {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 52px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
  color: var(--muted);
}
.hero-statement p { margin: 0; max-width: 430px; }

.intro {
  padding: 70px 0 86px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 52px;
  border-top: 1px solid var(--line);
}
.intro p { margin: 0; max-width: 560px; }
.intro-left > p:not(.small-title) {
  font-family: var(--font-serif);
  font-size: clamp(22px, 3vw, 38px);
  line-height: 1.18;
}
.intro-right { color: var(--muted); align-self: end; }

.index {
  padding: 72px 0 90px;
  border-top: 1px solid var(--line);
}

.section-label {
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-label::after {
  content: "";
  height: 1px;
  background: var(--line);
  flex: 1;
}

.index-list {
  margin-top: 28px;
  border-top: 1px solid var(--ink);
}
.index-row {
  display: grid;
  grid-template-columns: 88px 1.1fr 1fr 160px;
  gap: 24px;
  align-items: baseline;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.index-row:hover .index-title { color: var(--accent); }
.index-no,
.index-place,
.index-en {
  color: var(--muted);
  font-size: 11px;
  letter-spacing: .05em;
  text-transform: uppercase;
}
.index-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4.2vw, 58px);
  line-height: .95;
  font-weight: 400;
  transition: color .2s ease;
}

.chapters {
  padding: 70px 0 10px;
  border-top: 1px solid var(--line);
}
.chapter {
  min-height: 92vh;
  display: grid;
  grid-template-columns: 260px 1fr 300px;
  gap: 34px;
  align-items: center;
  padding: 70px 0;
  border-bottom: 1px solid var(--line);
}
.chapter-side {
  align-self: stretch;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  color: var(--muted);
  font-size: 11px;
}
.chapter-no {
  color: var(--accent);
  font-size: 12px;
  letter-spacing: .1em;
}
.chapter-title h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(38px, 5vw, 76px);
  font-weight: 400;
  line-height: .95;
}
.chapter-title p {
  margin: 12px 0 0;
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--muted);
}

.chapter-image {
  margin: 0;
  background: #fbf8f1;
  padding: 14px;
  border: 1px solid var(--line);
  box-shadow: 0 18px 42px var(--shadow);
}
.chapter-image img,
.chapter-image .image-fallback {
  aspect-ratio: 16 / 10;
  object-fit: cover;
}
.chapter-image figcaption {
  display: flex;
  justify-content: space-between;
  margin-top: 10px;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.chapter-copy {
  align-self: end;
}
.chapter-copy .cn {
  margin: 0 0 18px;
  font-family: var(--font-serif);
  font-size: 22px;
  line-height: 1.35;
}
.chapter-copy .en {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}
.thumb-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 28px;
}
.thumb {
  aspect-ratio: 1 / 1;
  background: var(--paper-2);
  border: 1px solid var(--line);
  overflow: hidden;
}
.thumb img { width: 100%; height: 100%; object-fit: cover; filter: saturate(.86) contrast(.96); }
.thumb .image-fallback { height: 100%; aspect-ratio: auto; font-size: 9px; }

.archive-board {
  padding: 84px 0;
  border-top: 1px solid var(--line);
}
.board {
  margin-top: 28px;
  display: grid;
  grid-template-columns: 1.25fr .75fr .75fr;
  gap: 14px;
}
.note {
  background: #fbf8f1;
  border: 1px solid var(--line);
  padding: 18px;
  min-height: 150px;
  box-shadow: 0 10px 24px rgba(44,36,25,.08);
}
.note-main {
  grid-row: span 2;
  min-height: 320px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}
.note h2 {
  margin: 0 0 18px;
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(34px, 4vw, 60px);
  line-height: 1;
}
.note p { margin: 0; max-width: 420px; }
.slip span {
  display: block;
  color: var(--muted);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: .1em;
  margin-bottom: 20px;
}
.slip strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 22px;
  line-height: 1.1;
  font-weight: 400;
}
.quote { display: flex; align-items: end; color: var(--accent); }

.footer {
  padding: 56px 0;
  border-top: 1px solid var(--ink);
  display: flex;
  justify-content: space-between;
  gap: 40px;
}
.footer p { margin: 0; }
.footer-links { display: flex; gap: 22px; color: var(--muted); }
.footer-links a:hover { color: var(--ink); }

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .8s ease, transform .8s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 920px) {
  .site-header { padding: 0 18px; }
  .nav { gap: 14px; font-size: 10px; }
  .section { width: min(100vw - 32px, var(--max)); }
  .hero {
    grid-template-columns: 1fr;
    gap: 34px;
    padding-top: 84px;
  }
  .hero-meta { grid-template-columns: 1fr; gap: 4px; }
  .cover-object { width: min(100%, 520px); justify-self: start; }
  .hero-statement, .intro { grid-template-columns: 1fr; gap: 24px; }
  .index-row {
    grid-template-columns: 46px 1fr;
    gap: 10px 18px;
  }
  .index-en, .index-place { grid-column: 2; }
  .chapter {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 54px 0;
  }
  .chapter-side { gap: 18px; }
  .board { grid-template-columns: 1fr; }
  .note-main { min-height: 260px; }
}