* {
  box-sizing: border-box;
}

:root {
  --paper: #f7f6ef;
  --paper-deep: #ece9dc;
  --ink: #101010;
  --muted: #68665e;
  --line: #111111;
  --grid: rgba(17, 17, 17, .075);
  --red: #c51f1a;
  --max: 1080px;
  --pad: clamp(16px, 2.2vw, 26px);
  --sans: "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --serif: "Songti SC", "SimSun", "Noto Serif CJK SC", serif;
  --mono: "SFMono-Regular", "Roboto Mono", "IBM Plex Mono", Consolas, monospace;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    var(--paper);
  background-size: 54px 54px, 54px 54px, auto;
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

.record-page {
  width: min(100%, var(--max));
  min-height: 100vh;
  margin: 0 auto;
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
  background: rgba(247, 246, 239, .84);
}

.record-top {
  display: grid;
  grid-template-columns: 1fr auto;
  min-height: 64px;
  border-bottom: 2px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .08em;
}

.brand,
.back {
  display: flex;
  align-items: center;
  padding: 0 var(--pad);
}

.brand {
  gap: 10px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 2px solid var(--ink);
  color: var(--red);
}

.back {
  border-left: 1px solid var(--line);
  color: var(--muted);
}

.record-hero {
  min-height: 430px;
  padding: clamp(44px, 7vw, 86px) var(--pad);
  border-bottom: 2px solid var(--line);
}

.kicker {
  margin-bottom: 28px;
  color: var(--red);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .15em;
  text-transform: uppercase;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(48px, 7vw, 88px);
  line-height: .98;
  letter-spacing: -.07em;
}

.main-line {
  max-width: 620px;
  margin: 28px 0 0;
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 800;
  line-height: 1.45;
}

.extra-line {
  max-width: 620px;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.78;
}

.record-slots {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 2px solid var(--line);
}

.slot {
  min-height: 260px;
  padding: 18px;
  border-right: 1px solid var(--line);
}

.slot:last-child {
  border-right: 0;
}

.slot span {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .14em;
}

.visual-manual {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 86px;
  border-bottom: 2px solid var(--line);
}

.manual-copy {
  min-height: 360px;
  padding: clamp(34px, 5vw, 58px) var(--pad);
  border-right: 2px solid var(--line);
}

.manual-copy h2 {
  max-width: 620px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(34px, 4.8vw, 60px);
  line-height: 1.05;
  letter-spacing: -.065em;
}

.manual-copy p {
  max-width: 560px;
  margin: 24px 0 0;
  color: #3d3b35;
  font-size: 14px;
  line-height: 1.78;
}

.manual-spine {
  display: grid;
  grid-template-rows: 1fr auto;
  background: rgba(247, 246, 239, .56);
}

.manual-spine span {
  display: grid;
  place-items: center;
  padding: 18px 0;
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-family: var(--serif);
  font-weight: 900;
  letter-spacing: .12em;
}

.manual-spine span:first-child {
  color: var(--red);
  font-size: clamp(22px, 2.4vw, 32px);
}

.manual-spine span:last-child {
  border-top: 2px solid var(--line);
  font-size: 18px;
}

.visual-index {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 2px solid var(--line);
}

.visual-index a {
  display: grid;
  align-content: start;
  min-height: 170px;
  padding: 18px;
  border-right: 1px solid var(--line);
  background: rgba(255, 253, 245, .24);
  transition: background .18s ease, transform .18s ease;
}

.visual-index a:last-child {
  border-right: 0;
}

.visual-index a:hover {
  background: rgba(197, 31, 26, .055);
  transform: translateY(-2px);
}

.visual-index span {
  color: var(--red);
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 900;
}

.visual-index strong {
  margin-top: 24px;
  font-family: var(--serif);
  font-size: 26px;
  line-height: 1.08;
  letter-spacing: -.045em;
}

.visual-index em {
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
  font-style: normal;
  line-height: 1.55;
}

.visual-gallery {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
  padding: var(--pad);
  border-bottom: 2px solid var(--line);
}

.visual-piece {
  grid-column: span 2;
  min-height: 340px;
  padding: 14px;
  border: 1px solid var(--line);
  border-right: 0;
  border-bottom: 0;
  background: rgba(255, 253, 245, .28);
}

.visual-piece:nth-child(3n),
.visual-piece:last-child {
  border-right: 1px solid var(--line);
}

.visual-piece:nth-last-child(-n + 3) {
  border-bottom: 1px solid var(--line);
}

.visual-piece.large {
  grid-column: span 3;
}

.visual-piece.wide {
  grid-column: span 4;
}

.visual-piece.tall {
  min-height: 430px;
}

.piece-frame {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 210px;
  border: 2px solid var(--line);
  background:
    linear-gradient(135deg, transparent 49.5%, rgba(17, 17, 17, .28) 50%, transparent 50.5%),
    linear-gradient(45deg, transparent 49.5%, rgba(17, 17, 17, .18) 50%, transparent 50.5%),
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    var(--paper-deep);
  background-size: auto, auto, 28px 28px, 28px 28px, auto;
  box-shadow: 8px 8px 0 var(--ink);
  overflow: hidden;
}

.visual-piece.tall .piece-frame {
  min-height: 300px;
}

.visual-piece.wide .piece-frame {
  min-height: 190px;
}

.piece-frame span {
  display: inline-grid;
  place-items: center;
  min-height: 28px;
  padding: 0 10px;
  color: var(--paper);
  background: var(--ink);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .14em;
}

.piece-caption {
  display: grid;
  grid-template-columns: 78px 1fr;
  gap: 12px;
  padding-top: 18px;
}

.piece-caption b {
  color: var(--red);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .12em;
}

.piece-caption h3 {
  grid-column: 2;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.12;
  letter-spacing: -.045em;
}

.piece-caption p {
  grid-column: 2;
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.58;
}

.display-rules {
  display: grid;
  grid-template-columns: .95fr 1.05fr;
  border-bottom: 2px solid var(--line);
}

.rule-title {
  min-height: 310px;
  padding: clamp(28px, 4vw, 44px) var(--pad);
  border-right: 2px solid var(--line);
}

.rule-title span {
  display: inline-block;
  color: var(--red);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .16em;
}

.rule-title h2 {
  margin: clamp(46px, 6vw, 70px) 0 0;
  font-family: var(--serif);
  font-size: clamp(30px, 4vw, 50px);
  line-height: 1.08;
  letter-spacing: -.06em;
}

.rule-list article {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 20px;
  min-height: 103px;
  padding: 22px var(--pad);
  border-bottom: 1px solid var(--line);
}

.rule-list article:last-child {
  border-bottom: 0;
}

.rule-list b {
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.1;
}

.rule-list p {
  margin: 0;
  color: #3d3b35;
  font-size: 14px;
  line-height: 1.72;
}

.archive-format {
  padding: clamp(28px, 4vw, 42px) var(--pad);
  border-bottom: 2px solid var(--line);
}

.archive-format p {
  max-width: 720px;
  margin: 0;
  font-size: 15px;
  font-weight: 800;
  line-height: 1.7;
}

.record-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 16px var(--pad);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .12em;
  color: var(--muted);
  text-transform: uppercase;
}

@media (max-width: 760px) {
  .record-top,
  .record-slots,
  .visual-manual,
  .visual-index,
  .display-rules {
    grid-template-columns: 1fr;
  }

  .back,
  .slot {
    border-left: 0;
    border-right: 0;
    border-top: 1px solid var(--line);
  }

  .manual-copy,
  .rule-title {
    min-height: auto;
    border-right: 0;
    border-bottom: 2px solid var(--line);
  }

  .manual-spine {
    grid-template-columns: 1fr auto;
    grid-template-rows: 1fr;
  }

  .manual-spine span {
    writing-mode: horizontal-tb;
    text-orientation: mixed;
    padding: 14px 18px;
  }

  .manual-spine span:last-child {
    border-top: 0;
    border-left: 2px solid var(--line);
  }

  .visual-index a {
    min-height: 130px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .visual-gallery {
    grid-template-columns: 1fr;
  }

  .visual-piece,
  .visual-piece.large,
  .visual-piece.wide {
    grid-column: span 1;
    border-right: 1px solid var(--line);
  }

  .piece-caption,
  .rule-list article {
    grid-template-columns: 1fr;
  }

  .piece-caption h3,
  .piece-caption p {
    grid-column: 1;
  }
}