:root {
  --paper: #fbfaf7;
  --paper-soft: #f4f3ed;
  --paper-warm: #f8f3ed;
  --ink: #1c1b18;
  --ink-soft: #5a574f;
  --ink-faint: #8b877e;
  --line: #dfdcd3;
  --green: #2f5d3a;
  --green-soft: #edf2ec;
  --red: #b5392f;
  --red-soft: #f8eeeb;
  --focus: #1d5fd1;
  --serif: "Songti SC", "STSong", "Noto Serif CJK SC", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.7 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
[hidden] { display: none !important; }
.wide { width: min(100% - 3rem, 1296px); margin-inline: auto; }

.skip-link {
  position: fixed;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  padding: .55rem .85rem;
  background: var(--ink);
  color: white;
  border-radius: 0 0 6px 6px;
}
.skip-link:focus { top: 0; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(251, 250, 247, .96);
}
.header-inner {
  min-height: 76px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 2rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
  width: max-content;
  text-decoration: none;
}
.brand img { flex: none; }
.brand strong { font-size: 1.15rem; letter-spacing: .02em; }
.brand span {
  padding-left: .8rem;
  border-left: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: .9rem;
}
.site-nav { display: flex; align-items: center; gap: 2.2rem; }
.site-nav a, .private-link {
  position: relative;
  padding: 1.55rem .1rem;
  color: var(--ink-soft);
  text-decoration: none;
  white-space: nowrap;
}
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--green);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform .16s ease;
}
.site-nav a:hover, .site-nav a.active { color: var(--green); }
.site-nav a:hover::after, .site-nav a.active::after { transform: scaleX(1); }
.private-link { justify-self: end; font-size: .9rem; color: var(--ink-faint); }
.private-link:hover { color: var(--green); }

.index-section { padding-block: 2.8rem 0; }
.index-heading { padding-bottom: 1.6rem; border-bottom: 1px solid var(--line); }
.eyebrow {
  margin: 0 0 .35rem;
  color: var(--green);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
}
h1, h2, h3, p { margin-top: 0; }
h1, h2, .project-name, .panel-header h2, .latest-rule blockquote { font-family: var(--serif); }
h1 { margin-bottom: .35rem; font-size: clamp(2rem, 3.3vw, 3rem); line-height: 1.25; letter-spacing: .04em; }
.index-heading > p:last-child { margin-bottom: 0; color: var(--ink-soft); }

.project-browser {
  display: grid;
  grid-template-columns: minmax(300px, 34%) 1fr;
  min-height: 570px;
  border-bottom: 1px solid var(--line);
}
.project-list {
  padding: 1.6rem 1.8rem 1.7rem 0;
  border-right: 1px solid var(--line);
}
.project-tab {
  width: 100%;
  display: grid;
  grid-template-columns: 3rem 1fr auto;
  gap: 1rem;
  align-items: start;
  padding: 1.45rem .7rem 1.45rem 1.2rem;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-left: 3px solid transparent;
  background: transparent;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
  transition: background-color .16s ease, border-color .16s ease;
}
.project-tab:hover { background: var(--paper-soft); }
.project-tab.is-selected { border-left-color: var(--red); background: var(--red-soft); }
.project-tab[data-project="daily"].is-selected { border-left-color: var(--green); background: var(--green-soft); }
.project-number { color: var(--red); font: 2rem/1 var(--serif); }
.project-tab[data-project="daily"] .project-number { color: var(--green); }
.project-tab-copy { min-width: 0; display: grid; gap: .14rem; }
.project-name { display: flex; align-items: center; gap: .7rem; font-size: 1.45rem; line-height: 1.3; }
.project-name img { border-radius: 7px; }
.project-subtitle { color: var(--ink-soft); font-size: .88rem; }
.project-state { margin-top: .55rem; color: var(--red); font-size: .86rem; font-weight: 600; }
.project-tab[data-project="daily"] .project-state { color: var(--green); }
.project-arrow { align-self: center; color: var(--red); font-size: 1.5rem; }
.project-tab[data-project="daily"] .project-arrow { color: var(--green); }
.privacy-note {
  margin-top: 5rem;
  padding: 1.1rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--green-soft);
  color: var(--ink-soft);
  font-size: .88rem;
}
.privacy-note strong, .privacy-note span { display: block; }
.privacy-note strong { color: var(--ink); }
.privacy-note span { margin-top: .35rem; color: var(--green); }
.privacy-note p { margin: .45rem 0 0; }

.project-panels { padding: 2.3rem 0 1.7rem 3.2rem; }
.project-panel { animation: panel-in .2s ease both; }
.panel-header { display: flex; align-items: center; gap: 1.3rem; }
.panel-mark { flex: none; width: 64px; height: 64px; }
.panel-header h2 { margin-bottom: .45rem; font-size: clamp(1.7rem, 2.6vw, 2.55rem); line-height: 1.25; letter-spacing: .04em; }
.panel-header h2 span { color: var(--ink-soft); font-size: .58em; font-weight: 400; letter-spacing: 0; }
.panel-header p, .panel-description { color: var(--ink-soft); }
.panel-header p { margin-bottom: 0; }
.panel-description { max-width: 48rem; margin: 1.2rem 0 1.35rem; }
.facts {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem 2.3rem;
  margin: 0 0 1.5rem;
}
.facts div { display: flex; gap: .45rem; align-items: baseline; }
.facts dt { color: var(--ink-faint); font-size: .8rem; }
.facts dd { margin: 0; color: var(--red); font-size: .95rem; font-weight: 600; }
.project-panel-green .facts dd { color: var(--green); }
.actions { display: flex; flex-wrap: wrap; gap: .8rem; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 1.4rem;
  min-height: 48px;
  padding: .7rem 1.25rem;
  border: 1px solid var(--red);
  border-radius: 4px;
  color: var(--red);
  text-decoration: none;
  transition: background-color .16s ease, color .16s ease, transform .16s ease;
}
.button.primary { background: var(--red); color: white; }
.project-panel-green .button { border-color: var(--green); color: var(--green); }
.project-panel-green .button.primary { background: var(--green); color: white; }
.button:hover { transform: translateY(-1px); }
.button.primary:hover { background: #952f28; }
.project-panel-green .button.primary:hover { background: #24492d; }
.latest-rule { margin-top: 2rem; padding-top: 1.25rem; border-top: 1px solid var(--line); }
.latest-rule h3 { margin-bottom: 1rem; font-size: 1.1rem; letter-spacing: .05em; }
.latest-rule h3::before { content: ""; display: inline-block; width: 4px; height: 1.05em; margin-right: .65rem; background: var(--red); vertical-align: -.1em; }
.project-panel-green .latest-rule h3::before { background: var(--green); }
.latest-rule blockquote {
  margin: 0;
  padding-left: 2.7rem;
  position: relative;
  max-width: 47rem;
  font-size: clamp(1.35rem, 2vw, 1.85rem);
  line-height: 1.65;
}
.latest-rule blockquote::before { content: "“"; position: absolute; left: 0; top: -.3rem; color: #e3b8b2; font-size: 3.6rem; line-height: 1; }
.latest-rule > p { margin: .85rem 0 0 2.7rem; color: var(--ink-faint); font-size: .82rem; }
.service-principles ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .55rem 2rem; margin: 0; padding-left: 1.2rem; }
.service-principles > p { margin-left: 0; }

.updates { padding-block: 2rem; border-bottom: 1px solid var(--line); }
.updates h2, .about h2 { margin-bottom: 1rem; font-size: 1.3rem; letter-spacing: .05em; }
.update-list { border-top: 1px solid var(--line); }
.update-list p { display: grid; grid-template-columns: 9rem 1fr; gap: 2rem; margin: 0; padding: .85rem 0; border-bottom: 1px solid var(--line); }
.update-list time { color: var(--ink-faint); font-variant-numeric: tabular-nums; }

.about { display: grid; grid-template-columns: minmax(240px, 34%) 1fr; gap: 3.2rem; padding-block: 3.6rem; }
.about-copy { max-width: 48rem; color: var(--ink-soft); }
.about-copy p:last-child { margin-bottom: 0; }
.site-footer { border-top: 1px solid var(--line); }
.footer-inner { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 1rem; color: var(--ink-faint); font-size: .84rem; }
.footer-inner p { margin: 0; }
.footer-inner a { text-underline-offset: .18em; }

:focus-visible { outline: 3px solid color-mix(in srgb, var(--focus) 55%, transparent); outline-offset: 3px; }
@keyframes panel-in { from { opacity: .2; transform: translateY(4px); } to { opacity: 1; transform: none; } }

@media (max-width: 900px) {
  .header-inner { grid-template-columns: 1fr auto; gap: .8rem; padding-block: .7rem; }
  .site-nav { grid-column: 1 / -1; grid-row: 2; justify-content: center; border-top: 1px solid var(--line); gap: 1.5rem; }
  .site-nav a { padding-block: .65rem; }
  .private-link { grid-column: 2; grid-row: 1; }
  .project-browser { grid-template-columns: 1fr; }
  .project-list { padding-right: 0; border-right: 0; }
  .privacy-note { margin-top: 1rem; }
  .project-panels { padding: 2rem 0; }
}

@media (max-width: 600px) {
  .wide { width: min(100% - 2rem, 1296px); }
  .brand span { display: none; }
  .private-link { font-size: .8rem; }
  .site-nav { justify-content: space-between; gap: .5rem; }
  .index-section { padding-top: 2rem; }
  .project-tab { grid-template-columns: 2.2rem 1fr auto; padding-left: .7rem; }
  .project-number { font-size: 1.55rem; }
  .project-name { font-size: 1.2rem; }
  .panel-header { align-items: flex-start; }
  .panel-mark { width: 50px; height: 50px; }
  .panel-header h2 span { display: block; margin-top: .25rem; }
  .facts { display: grid; gap: .45rem; }
  .actions { display: grid; }
  .button { width: 100%; }
  .latest-rule blockquote { padding-left: 2rem; font-size: 1.25rem; }
  .latest-rule > p { margin-left: 2rem; }
  .service-principles ul { grid-template-columns: 1fr; }
  .update-list p { grid-template-columns: 1fr; gap: .2rem; }
  .about { grid-template-columns: 1fr; gap: 1rem; padding-block: 2.6rem; }
  .footer-inner { align-items: flex-start; flex-direction: column; justify-content: center; padding-block: 1.2rem; }
}

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