:root {
  color-scheme: light;
  --paper: #f7f5ef;
  --paper-deep: #eeece3;
  --ink: #263332;
  --ink-soft: #53615d;
  --green: #476b63;
  --gold: #b69767;
  --line: #d8ddd5;
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", Georgia, serif;
  --sans: "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { min-width: 320px; background: var(--paper); }
body {
  margin: 0;
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  background:
    radial-gradient(circle at 78% 31%, rgb(182 151 103 / 7%), transparent 30%),
    radial-gradient(circle at 8% 79%, rgb(71 107 99 / 5%), transparent 33%),
    var(--paper);
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: .34;
  background-image: repeating-linear-gradient(0deg, transparent 0 3px, rgb(38 51 50 / 1.4%) 3px 4px);
  z-index: 2;
}
a { color: inherit; }
a:focus-visible { outline: 2px solid var(--green); outline-offset: 5px; }
.site-shell {
  width: min(100% - 112px, 1440px);
  min-height: 100svh;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
}
.site-header {
  min-height: 100px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand-lockup { display: inline-flex; align-items: center; gap: 13px; }
.brand-link { text-decoration: none; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 35px;
  height: 35px;
  border: 1px solid var(--ink);
  border-radius: 50%;
  font-family: Georgia, serif;
  font-size: 21px;
  font-style: italic;
  line-height: 1;
}
.brand-name { font-family: Georgia, serif; font-size: 14px; letter-spacing: .18em; font-weight: 700; }
.header-note { color: var(--ink-soft); font-size: 11px; letter-spacing: .17em; }
.header-note span { margin: 0 9px; color: var(--gold); }
.eyebrow { display: flex; align-items: center; gap: 12px; margin: 0; color: var(--green); font-size: 11px; font-weight: 700; letter-spacing: .22em; }
.rule-dot { display: block; width: 22px; height: 1px; background: var(--green); }
.title-stop { color: var(--gold); }

.hero {
  flex: 1;
  min-height: 650px;
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(310px, .7fr);
  align-items: center;
  gap: 32px;
  padding: 84px 0 66px;
}
.hero-copy { position: relative; z-index: 1; padding-bottom: 32px; }
.hero h1 {
  margin: 32px 0 11px -10px;
  font-family: Georgia, "Noto Serif SC", serif;
  font-weight: 400;
  font-size: clamp(112px, 13vw, 214px);
  line-height: .96;
  letter-spacing: -.092em;
}
.hero-subtitle { margin: 0 0 33px; font-family: var(--serif); font-size: clamp(25px, 2.5vw, 36px); letter-spacing: .11em; }
.hero-description { margin: 0; padding-left: 20px; border-left: 1px solid var(--gold); color: var(--ink-soft); font-family: var(--serif); font-size: 16px; line-height: 2.25; letter-spacing: .07em; }
.hero-art { position: relative; justify-self: end; width: min(100%, 440px); aspect-ratio: 1; }
.art-index { position: absolute; top: 1%; left: 10%; color: var(--gold); font: 12px Georgia, serif; letter-spacing: .16em; }
.art-ring { position: absolute; border: 1px solid; border-radius: 50%; }
.art-ring-outer { inset: 9%; border-color: rgb(71 107 99 / 47%); }
.art-ring-inner { inset: 27%; border-color: rgb(182 151 103 / 65%); }
.art-ring-outer::after { content: ""; position: absolute; inset: 10%; border: 1px dashed rgb(71 107 99 / 19%); border-radius: 50%; }
.art-cross { position: absolute; display: block; background: var(--gold); }
.art-cross-top, .art-cross-bottom { width: 1px; height: 24px; left: 50%; }
.art-cross-top { top: 6%; }.art-cross-bottom { bottom: 6%; }
.art-cross-left, .art-cross-right { height: 1px; width: 24px; top: 50%; }
.art-cross-left { left: 6%; }.art-cross-right { right: 6%; }
.art-letter { position: absolute; inset: 0; display: grid; place-items: center; padding-bottom: .08em; color: var(--green); font-family: Georgia, serif; font-size: clamp(100px, 13vw, 190px); font-style: italic; line-height: 1; }
.art-caption { position: absolute; bottom: 1%; right: 0; color: var(--ink-soft); font-size: 10px; letter-spacing: .19em; }
.closing-note {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 44px;
  align-items: start;
  padding: 37px 0 70px;
  border-top: 1px solid var(--line);
}
.closing-label { display: flex; align-items: center; gap: 18px; font-size: 13px; letter-spacing: .12em; }
.section-no { color: var(--gold); font-family: Georgia, serif; font-size: 18px; }
.closing-note p { margin: 0; font-family: var(--serif); font-size: clamp(19px, 2.1vw, 28px); line-height: 1.85; letter-spacing: .06em; }
.closing-note p span { color: var(--ink-soft); }
.site-footer { min-height: 74px; display: flex; justify-content: space-between; align-items: center; gap: 20px; border-top: 1px solid var(--line); color: var(--ink-soft); font-size: 11px; letter-spacing: .14em; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: var(--green); }
.home-page .site-footer { display: grid; grid-template-columns: 1fr auto 1fr; }
.home-page .site-footer > :last-child { justify-self: end; }
.home-page .icp-link { white-space: nowrap; letter-spacing: .02em; }

.desk-main { flex: 1; width: min(100%, 1030px); margin: 0 auto; padding: 111px 0 100px; }
.desk-heading { margin-bottom: 95px; }
.desk-heading h1 { margin: 28px 0 10px -4px; font-family: var(--serif); font-weight: 500; font-size: clamp(65px, 8vw, 112px); line-height: 1.2; letter-spacing: .05em; }
.desk-heading > p:last-child { margin: 0; color: var(--ink-soft); font-family: var(--serif); font-size: 18px; letter-spacing: .1em; }
.section-heading { display: flex; justify-content: space-between; align-items: end; padding-bottom: 21px; border-bottom: 1px solid var(--ink); }
.section-heading h2 { margin: 0; font-family: var(--serif); font-weight: 600; font-size: 22px; letter-spacing: .12em; }
.section-heading span { color: var(--ink-soft); font-family: Georgia, serif; font-size: 12px; letter-spacing: .13em; }
.tool-row { display: grid; grid-template-columns: 72px 1fr auto; align-items: center; gap: 16px; min-height: 134px; border-bottom: 1px solid var(--line); text-decoration: none; transition: padding .2s ease, background-color .2s ease; }
.tool-row:hover { padding-inline: 16px; background: rgb(71 107 99 / 6%); }
.tool-number { align-self: center; color: var(--gold); font-family: Georgia, serif; font-size: 24px; }
.tool-detail { display: flex; flex-direction: column; gap: 9px; }
.tool-detail strong { font-family: var(--serif); font-weight: 600; font-size: 27px; letter-spacing: .09em; }
.tool-detail small { color: var(--ink-soft); font-family: var(--sans); font-size: 13px; letter-spacing: .05em; }
.tool-action { display: flex; align-items: center; gap: 14px; font-size: 13px; letter-spacing: .09em; }
.tool-action span { font-family: Georgia, serif; color: var(--green); font-size: 26px; font-weight: 400; line-height: 1; transition: transform .2s ease; }
.tool-row:hover .tool-action span { transform: translate(3px, -3px); }
.desk-footnote { margin-top: 32px; color: var(--ink-soft); font-family: var(--serif); font-size: 13px; letter-spacing: .07em; }

@media (max-width: 920px) {
  .site-shell { width: min(100% - 64px, 1440px); }
  .hero { min-height: 580px; grid-template-columns: 1.1fr .9fr; gap: 0; }
  .hero h1 { font-size: clamp(100px, 13vw, 160px); }
  .hero-art { width: min(100%, 350px); }
}
@media (max-width: 680px) {
  .site-shell { width: calc(100% - 42px); }
  .site-header { min-height: 76px; }
  .header-note { font-size: 9px; letter-spacing: .08em; text-align: right; }
  .header-note span { margin-inline: 4px; }
  .brand-mark { width: 32px; height: 32px; font-size: 19px; }
  .brand-lockup { gap: 8px; }
  .brand-name { font-size: 11px; }
  .hero { display: flex; flex-direction: column; align-items: stretch; min-height: 0; padding: 81px 0 44px; gap: 45px; }
  .hero-copy { padding-bottom: 0; }
  .hero h1 { margin: 22px 0 24px -6px; font-size: clamp(90px, 21vw, 142px); }
  .hero-subtitle { margin-bottom: 28px; font-size: 26px; }
  .hero-description { font-size: 14px; line-height: 2.05; }
  .hero-art { width: min(70vw, 290px); align-self: flex-end; margin-right: 8px; }
  .art-letter { font-size: 132px; }
  .closing-note { display: block; padding: 28px 0 48px; }
  .closing-label { margin-bottom: 24px; }
  .closing-note p { font-size: 21px; }
  .site-footer { min-height: 68px; font-size: 10px; }
  .home-page .site-footer { grid-template-columns: 1fr 1fr; gap: 14px; padding: 20px 0; }
  .home-page .icp-link { grid-column: 1 / -1; grid-row: 2; justify-self: center; }
  .desk-main { padding: 76px 0 80px; }
  .desk-heading { margin-bottom: 73px; }
  .desk-heading h1 { font-size: 63px; }
  .desk-heading > p:last-child { font-size: 15px; }
  .tool-row { min-height: 116px; grid-template-columns: 40px 1fr auto; gap: 10px; }
  .tool-detail strong { font-size: 21px; }
  .tool-detail small { font-size: 11px; }
  .tool-action { font-size: 0; gap: 0; }
  .tool-action span { font-size: 25px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}