/* roulang page: index */
:root {
  --ink: #161310;
  --ivory: #F6F1EA;
  --deep: #1C1814;
  --copper: #B5683D;
  --copper-deep: #8E4E2C;
  --plum: #6C4452;
  --plum-soft: #A88490;
  --text: #2A2420;
  --muted: #6E655C;
  --muted-deep: #C4B8AE;
  --line: #E4D9CC;
  --line-deep: rgba(243, 237, 230, .18);
  --on-dark: #F3EDE6;
  --shadow: 0 8px 24px rgba(22, 19, 16, .08);
  --radius: 2px;
  --sans: "PingFang SC", "HarmonyOS Sans SC", "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", "SimHei", sans-serif;
  --serif: "Songti SC", "STSong", "SimSun", "Noto Serif SC", serif;
  --space: 72px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--ivory);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, p, ul, ol, figure { margin: 0; padding: 0; }
ul { list-style: none; }
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; text-decoration-color: var(--copper); text-underline-offset: 4px; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 3px;
}
img { max-width: 100%; display: block; }
button, input, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
::selection { background: var(--copper); color: var(--ivory); }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 20px; }
.band { padding: var(--space) 0; }
.band-light { background: var(--ivory); color: var(--text); }
.band-deep { background: var(--deep); color: var(--on-dark); }
.band-light + .band-light, .band-deep + .band-deep { box-shadow: inset 0 1px 0 var(--line); }
.kicker {
  display: block;
  margin-bottom: 10px;
  color: var(--copper);
  font-size: 12px;
  letter-spacing: .18em;
  line-height: 1.4;
}
h1 {
  font-size: 56px;
  line-height: 1.12;
  letter-spacing: -.03em;
  font-weight: 680;
  color: var(--ink);
}
h2 {
  font-size: 34px;
  line-height: 1.28;
  letter-spacing: -.02em;
  font-weight: 650;
}
h3 { font-size: 22px; line-height: 1.4; letter-spacing: -.02em; font-weight: 650; }
.lead { margin-top: 16px; max-width: 68ch; color: var(--muted); font-size: 16px; }
.band-deep .lead, .band-deep .muted { color: var(--muted-deep); }
.claim {
  margin-top: 14px;
  font-family: var(--serif);
  font-size: 18px;
  color: var(--ink);
}
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background-color .2s ease, color .2s ease, transform .2s ease;
  text-decoration: none;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: none; }
.btn-ink { background: var(--ink); color: var(--copper); }
.btn-ink:hover { background: #2A221C; color: #D7A07A; }
.btn-ink:active { background: #100e0c; }
.btn-copper { background: var(--copper); color: var(--ink); }
.btn-copper:hover { background: var(--copper-deep); color: var(--ivory); }
.btn-copper:active { background: #7A4324; color: var(--ivory); }
.badge {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 8px;
  border: 1px solid var(--plum);
  border-radius: var(--radius);
  color: var(--plum);
  font-size: 12px;
  letter-spacing: .08em;
  line-height: 1;
  background: transparent;
}
.band-deep .badge { color: #F0DDE3; border-color: var(--plum-soft); }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--ivory);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 1px 0 rgba(22, 19, 16, .03);
}
.nav-desktop {
  min-height: 84px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
}
.nav-list { display: flex; gap: 26px; align-items: center; }
.nav-list-left { justify-content: flex-end; }
.nav-list-right { justify-content: flex-start; }
.nav-list a {
  position: relative;
  padding: 8px 0;
  font-size: 15px;
  color: var(--text);
}
.nav-list a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 0;
  height: 1px;
  background: var(--copper);
  transition: width .2s ease;
}
.nav-list a:hover { text-decoration: none; color: var(--ink); }
.nav-list a:hover::after, .nav-list a.is-current::after { width: 100%; }
.logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  color: var(--ink);
  line-height: 1.15;
  letter-spacing: -.02em;
  font-weight: 700;
  min-width: 210px;
}
.logo:hover { text-decoration: none; color: var(--copper-deep); }
.logo span { display: block; font-size: 16px; }
.nav-mobile { display: none; }
.menu-btn, .nav-quick {
  min-width: 52px;
  min-height: 44px;
  color: var(--ink);
  font-size: 14px;
}
.menu-btn { display: inline-flex; align-items: center; gap: 8px; }
.menu-bars, .menu-bars::before, .menu-bars::after {
  display: block;
  width: 16px;
  height: 1px;
  background: var(--ink);
  position: relative;
}
.menu-bars::before, .menu-bars::after {
  content: "";
  position: absolute;
  left: 0;
}
.menu-bars::before { top: -5px; }
.menu-bars::after { top: 5px; }
.nav-panel { display: none; border-top: 1px solid var(--line); background: var(--ivory); }
.nav-panel.is-open { display: block; }
.nav-panel a {
  display: block;
  padding: 14px 20px;
  border-bottom: 1px solid var(--line);
  font-size: 16px;
}
.kanban { border-bottom: 1px solid var(--line); }
.metric-list { display: flex; flex-direction: column; }
.metric { padding: 14px 0 12px; border-top: 1px solid var(--line); }
.metric:first-child { border-top: 0; padding-top: 0; }
.metric b {
  display: block;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--muted);
  font-weight: 500;
}
.metric strong {
  display: block;
  margin: 4px 0 8px;
  font-size: 40px;
  line-height: 1;
  letter-spacing: -.04em;
  font-weight: 620;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
}
.metric em { font-style: normal; font-size: 14px; margin-left: 4px; color: var(--muted); letter-spacing: 0; }
.bar { height: 2px; background: var(--line); position: relative; overflow: hidden; }
.bar i {
  display: block;
  height: 100%;
  background: var(--copper);
  transform: scaleX(0);
  transform-origin: left center;
  animation: grow .22s ease forwards;
}
.band-deep .bar { background: rgba(243, 237, 230, .16); }
.bar.alt i { background: var(--plum); }
@keyframes grow { to { transform: scaleX(1); } }
.spec-main, .subspec, .story, .wire, .form-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 26px;
  background: rgba(255, 255, 255, .28);
}
.band-deep .spec-main, .band-deep .subspec, .band-deep .story, .band-deep .wire, .band-deep .form-card {
  border-color: var(--line-deep);
  background: rgba(243, 237, 230, .03);
}
.spec-main { min-height: 100%; }
.sub-stack { display: flex; flex-direction: column; gap: 16px; height: 100%; }
.subspec { flex: 1; }
.spec-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 18px; margin-top: 22px; }
.spec-meta div { border-top: 1px solid var(--line-deep); padding-top: 8px; }
.spec-meta b { display: block; font-size: 12px; letter-spacing: .12em; color: var(--copper); font-weight: 500; }
.cat-row { display: flex; justify-content: space-between; gap: 32px; align-items: flex-end; }
.name-row { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 18px; }
.name-row span { padding-bottom: 4px; border-bottom: 1px solid var(--line); font-size: 15px; }
.text-link { color: inherit; border-bottom: 1px solid var(--copper); padding-bottom: 2px; white-space: nowrap; }
.cmp-head, .cmp-row { display: grid; grid-template-columns: 120px 1fr 1fr; gap: 22px; align-items: center; }
.cmp-head { margin: 26px 0 8px; font-size: 13px; letter-spacing: .12em; color: var(--copper); }
.cmp-row { padding: 16px 0; border-top: 1px solid var(--line-deep); }
.cmp-row p { font-size: 14px; color: var(--muted-deep); margin-bottom: 8px; }
.scene { display: grid; grid-template-columns: 180px 1fr auto; gap: 24px; align-items: center; padding: 22px 0; border-top: 1px solid var(--line); }
.scene h3 { font-size: 20px; }
.miles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 28px; }
.mile { border-top: 1px solid var(--copper); padding-top: 16px; position: relative; }
.mile::before {
  content: "";
  position: absolute;
  left: 0;
  top: -4px;
  width: 7px;
  height: 7px;
  background: var(--plum);
}
.mile b { display: block; font-size: 12px; letter-spacing: .08em; color: var(--copper); font-weight: 500; }
.mile h3 { margin: 8px 0; font-size: 20px; }
.news-side { display: flex; flex-direction: column; gap: 0; border-top: 1px solid var(--line); }
.news-side a, .read-list a, .more-list a { display: block; }
.brief {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.brief h3 { font-size: 18px; margin-bottom: 6px; }
.story h3 { font-size: 32px; line-height: 1.3; margin: 8px 0 12px; }
.date { font-family: var(--serif); font-size: 14px; color: var(--muted); }
.band-deep .date { color: var(--muted-deep); }
.sheet { margin-top: 8px; }
.sheet-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 18px;
  align-items: center;
  padding: 16px 8px;
  border-top: 1px solid var(--line-deep);
  transition: background-color .2s ease;
}
.sheet-row:hover { background: rgba(243, 237, 230, .04); }
.guard { padding-top: 8px; }
.guard article { padding: 8px 8px 0 0; }
.guard .num {
  display: block;
  color: var(--copper);
  font-size: 12px;
  letter-spacing: .16em;
  margin-bottom: 8px;
}
.device-grid { align-items: center; }
.wire { min-height: 320px; position: relative; }
.screen {
  position: absolute;
  border: 1px solid var(--on-dark);
  border-radius: var(--radius);
}
.screen i, .screen i::before, .screen i::after {
  content: "";
  display: block;
  height: 2px;
  margin: 12px;
  background: rgba(243, 237, 230, .45);
}
.screen-desk { width: 70%; height: 58%; left: 7%; top: 16%; }
.screen-pad { width: 26%; height: 36%; right: 6%; bottom: 10%; }
.screen-phone { width: 13%; height: 42%; right: 12%; top: 12%; }
.qa, .faq-item { border-top: 1px solid var(--line); }
.band-deep .qa, .band-deep .faq-item { border-top-color: var(--line-deep); }
.qa button, .faq-q {
  width: 100%;
  text-align: left;
  background: transparent;
  border: 0;
  padding: 16px 0;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  font-size: 18px;
  letter-spacing: -.01em;
}
.faq-q::after, .qa button::after {
  content: "+";
  color: var(--copper);
  font-size: 22px;
  line-height: 1;
}
.qa.is-open button::after, .faq-item.is-open .faq-q::after { content: "–"; }
.qa-a, .faq-a { display: none; padding: 0 0 16px; max-width: 70ch; }
.qa.is-open .qa-a, .faq-item.is-open .faq-a { display: block; }
.index-row { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 20px; }
.index-row a { padding: 8px 0; border-bottom: 1px solid var(--line); }
.form-card label { display: block; margin-bottom: 14px; font-size: 14px; }
.form-card input, .form-card textarea {
  width: 100%;
  margin-top: 6px;
  padding: 12px 12px;
  border-radius: var(--radius);
  border: 1px solid var(--line-deep);
  background: var(--ink);
  color: var(--on-dark);
}
.form-card textarea { min-height: 120px; resize: vertical; }
.form-success { display: none; min-height: 180px; align-items: center; }
.form-card.is-done .form-fields { display: none; }
.form-card.is-done .form-success { display: flex; }
.read-grid a {
  display: block;
  min-height: 160px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}
.read-grid h3 { font-size: 22px; margin: 8px 0; }
.site-footer { background: var(--ink); color: var(--on-dark); padding: 48px 0 36px; }
.foot-logo { color: var(--on-dark); align-items: flex-start; text-align: left; margin-bottom: 8px; }
.foot-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 24px; }
.foot-grid h2 { font-size: 14px; letter-spacing: .14em; color: var(--copper); margin-bottom: 10px; font-weight: 600; }
.foot-grid a { display: block; padding: 4px 0; color: var(--on-dark); font-size: 15px; }
.copy { margin-top: 28px; padding-top: 16px; border-top: 1px solid rgba(243, 237, 230, .14); color: var(--muted-deep); font-size: 14px; }
@media (max-width: 1023px) {
  :root { --space: 40px; }
  h1 { font-size: 32px; }
  h2 { font-size: 24px; }
  .nav-desktop { display: none; }
  .nav-mobile {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    min-height: 64px;
    gap: 8px;
  }
  .logo span { font-size: 13px; }
  .nav-mobile .logo { min-width: 0; }
  .cmp-head, .cmp-row, .scene { grid-template-columns: 1fr; gap: 8px; }
  .miles { grid-template-columns: 1fr; }
  .mile { border-top: 0; border-left: 1px solid var(--copper); padding: 0 0 18px 16px; }
  .mile::before { top: 0; left: -4px; }
  .cat-row, .foot-grid { grid-template-columns: 1fr; display: grid; }
  .foot-grid { gap: 24px; }
  .story h3 { font-size: 26px; }
  .metric strong { font-size: 34px; }
}
@media (max-width: 639px) {
  .sheet-row { grid-template-columns: 1fr auto; }
  .sheet-row .date { grid-column: 1 / -1; }
  .spec-meta { grid-template-columns: 1fr; }
  .actions .btn { width: 100%; }
  .wrap { padding: 0 16px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
  .bar i { transform: none; }
  .btn:hover { transform: none; }
}

/* roulang page: category1 */
:root {
 --ink: #161310;
 --ivory: #F6F1EA;
 --deep: #1C1814;
 --copper: #B5683D;
 --copper-deep: #8E4E2C;
 --plum: #6C4452;
 --plum-soft: #A88490;
 --text: #2A2420;
 --muted: #6E655C;
 --muted-deep: #C4B8AE;
 --line: #E4D9CC;
 --line-deep: rgba(243, 237, 230, .18);
 --on-dark: #F3EDE6;
 --shadow: 0 8px 24px rgba(22, 19, 16, .08);
 --radius: 2px;
 --sans: "PingFang SC", "HarmonyOS Sans SC", "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", "SimHei", sans-serif;
 --serif: "Songti SC", "STSong", "SimSun", "Noto Serif SC", serif;
 --space: 72px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
 margin: 0;
 background: var(--ivory);
 color: var(--text);
 font-family: var(--sans);
 font-size: 17px;
 line-height: 1.75;
 text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; text-decoration-color: var(--copper); text-underline-offset: 4px; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
 outline: 2px solid var(--copper);
 outline-offset: 3px;
}
img { max-width: 100%; display: block; }
button, input, textarea { font: inherit; color: inherit; }
button { cursor: pointer; background: transparent; border: 0; padding: 0; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 {
 font-family: var(--sans);
 font-weight: 700;
 letter-spacing: -.03em;
 color: inherit;
 line-height: 1.25;
}
h1 { font-size: 56px; color: var(--ink); }
h2 { font-size: 34px; }
p { font-size: 16px; }
ul { margin: 0; padding: 0; list-style: none; }
.wrap { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.lead { margin-top: 14px; max-width: 68ch; color: var(--muted); font-size: 16px; }
.kicker {
 display: inline-block;
 margin-bottom: 10px;
 font-size: 12px;
 letter-spacing: .18em;
 color: var(--copper);
}
.band { padding: var(--space) 0; background: var(--ivory); }
.band-deep { background: var(--deep); color: var(--on-dark); }
.band-deep .lead, .band-deep .muted { color: var(--muted-deep); }
.band + .band { border-top: 0; }
.btn {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 min-height: 44px;
 padding: 0 18px;
 border-radius: var(--radius);
 border: 1px solid transparent;
 transition: background-color .2s ease, color .2s ease, transform .2s ease;
 text-decoration: none;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: none; }
.btn-ink { background: var(--ink); color: var(--copper); }
.btn-ink:hover { background: #2A221C; color: #D7A07A; }
.btn-copper { background: var(--copper); color: var(--ink); }
.btn-copper:hover { background: var(--copper-deep); color: var(--ivory); }
.btn-copper:active { background: #7A4324; color: var(--ivory); }
.badge {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 min-height: 26px;
 min-width: 64px;
 padding: 0 8px;
 border: 1px solid var(--plum);
 border-radius: var(--radius);
 color: var(--plum);
 font-size: 12px;
 letter-spacing: .08em;
 line-height: 1;
 background: transparent;
 white-space: nowrap;
}
.band-deep .badge { color: #F0DDE3; border-color: var(--plum-soft); }
.site-header {
 position: sticky;
 top: 0;
 z-index: 20;
 background: var(--ivory);
 border-bottom: 1px solid var(--line);
 box-shadow: 0 1px 0 rgba(22, 19, 16, .03);
}
.nav-desktop {
 min-height: 84px;
 display: grid;
 grid-template-columns: 1fr auto 1fr;
 align-items: center;
 gap: 16px;
}
.nav-list { display: flex; gap: 26px; align-items: center; }
.nav-list-left { justify-content: flex-end; }
.nav-list-right { justify-content: flex-start; }
.nav-list a {
 position: relative;
 padding: 8px 0;
 font-size: 15px;
 color: var(--text);
}
.nav-list a::after {
 content: "";
 position: absolute;
 left: 0;
 bottom: 2px;
 width: 0;
 height: 1px;
 background: var(--copper);
 transition: width .2s ease;
}
.nav-list a:hover { text-decoration: none; color: var(--ink); }
.nav-list a:hover::after, .nav-list a.is-current::after { width: 100%; }
.nav-list a.is-current { color: var(--ink); }
.logo {
 display: flex;
 flex-direction: column;
 align-items: center;
 text-align: center;
 color: var(--ink);
 line-height: 1.15;
 letter-spacing: -.02em;
 font-weight: 700;
 min-width: 210px;
}
.logo:hover { text-decoration: none; color: var(--copper-deep); }
.logo span { display: block; font-size: 16px; }
.nav-mobile { display: none; }
.menu-btn, .nav-quick {
 min-width: 52px;
 min-height: 44px;
 color: var(--ink);
 font-size: 14px;
}
.menu-btn { display: inline-flex; align-items: center; gap: 8px; }
.menu-bars, .menu-bars::before, .menu-bars::after {
 display: block;
 width: 16px;
 height: 1px;
 background: var(--ink);
 position: relative;
}
.menu-bars::before, .menu-bars::after { content: ""; position: absolute; left: 0; }
.menu-bars::before { top: -5px; }
.menu-bars::after { top: 5px; }
.nav-panel { display: none; border-top: 1px solid var(--line); background: var(--ivory); }
.nav-panel.is-open { display: block; }
.nav-panel a {
 display: block;
 padding: 14px 20px;
 border-bottom: 1px solid var(--line);
 font-size: 16px;
 color: var(--text);
}
.nav-panel a.is-current { box-shadow: inset 0 -1px 0 var(--copper); color: var(--copper-deep); }
.page-head { display: flex; justify-content: space-between; gap: 32px; align-items: flex-end; }
.crumb { display: flex; gap: 8px; align-items: center; color: var(--muted); font-size: 14px; white-space: nowrap; }
.crumb a { border-bottom: 1px solid transparent; }
.crumb a:hover { border-bottom-color: var(--copper); text-decoration: none; }
.crumb b { font-weight: 500; color: var(--ink); }
.filter-bar { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.filter-group { border-top: 1px solid var(--line); padding-top: 14px; }
.filter-group strong {
 display: block;
 margin-bottom: 12px;
 font-size: 12px;
 letter-spacing: .16em;
 font-weight: 500;
 color: var(--muted);
}
.chips { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.chip {
 position: relative;
 min-height: 36px;
 padding: 6px 0;
 color: var(--text);
 font-size: 15px;
}
.chip::after {
 content: "";
 position: absolute;
 left: 0;
 bottom: 2px;
 width: 0;
 height: 1px;
 background: var(--copper);
 transition: width .2s ease;
}
.chip:hover { color: var(--ink); }
.chip:hover::after, .chip.is-on::after { width: 100%; }
.chip.is-on { color: var(--ink); }
.entry-list { margin-top: 8px; }
.entry {
 display: grid;
 grid-template-columns: 88px minmax(0, 1fr) auto;
 gap: 22px;
 align-items: start;
 padding: 20px 0;
 border-top: 1px solid var(--line-deep);
 transition: background-color .2s ease;
}
.entry:hover { background: rgba(243, 237, 230, .04); }
.entry h3 { font-size: 22px; letter-spacing: -.02em; margin-bottom: 6px; }
.entry h3 a:hover { text-decoration: none; color: #E7C2A8; }
.entry p { color: var(--muted-deep); font-size: 15px; }
.entry time { color: var(--muted-deep); font-size: 14px; letter-spacing: .04em; padding-top: 6px; }
.list-more { display: flex; justify-content: flex-end; padding-top: 18px; }
.text-link { color: inherit; border-bottom: 1px solid var(--copper); padding-bottom: 2px; white-space: nowrap; }
.text-link:hover { text-decoration: none; color: #E7C2A8; }
.empty-note { display: none; padding: 28px 0; color: var(--muted-deep); border-top: 1px solid var(--line-deep); }
.empty-note.is-show { display: block; }
.def {
 display: grid;
 grid-template-columns: 180px minmax(0, 1fr);
 gap: 0 28px;
 margin-top: 28px;
}
.def dt, .def dd { padding: 16px 0; border-top: 1px solid var(--line); }
.def dt { color: var(--copper); font-size: 15px; letter-spacing: .06em; }
.def dd { margin: 0; color: var(--text); }
.timeline { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 22px; margin-top: 28px; }
.timeline li { border-top: 1px solid var(--copper); padding-top: 14px; }
.timeline b { display: block; font-size: 12px; letter-spacing: .14em; color: var(--copper); font-weight: 500; margin-bottom: 8px; }
.timeline strong { display: block; font-size: 18px; font-weight: 600; margin-bottom: 6px; }
.timeline span { display: block; color: var(--muted-deep); font-size: 14px; }
.news-list { margin-top: 8px; }
.news-list a {
 display: grid;
 grid-template-columns: 92px minmax(0, 1fr);
 gap: 18px;
 align-items: baseline;
 padding: 18px 0;
 border-top: 1px solid var(--line);
 transition: border-color .2s ease;
}
.news-list a:hover { text-decoration: none; }
.news-list a:hover strong { color: var(--copper-deep); }
.news-list em { font-style: normal; font-size: 13px; letter-spacing: .08em; color: var(--plum); }
.news-list strong { font-size: 20px; font-weight: 650; letter-spacing: -.02em; }
.news-list small { display: block; margin-top: 4px; color: var(--muted); font-size: 14px; }
.tip-list { margin-top: 12px; }
.tip {
 display: grid;
 grid-template-columns: 64px minmax(0, 1fr);
 gap: 12px;
 padding: 18px 0;
 border-top: 1px solid var(--line-deep);
}
.tip i { font-style: normal; color: var(--copper); letter-spacing: .12em; font-size: 13px; }
.tip strong { display: block; font-size: 18px; margin-bottom: 4px; }
.tip p { color: var(--muted-deep); }
.extend {
 display: grid;
 grid-template-columns: 220px minmax(0, 1fr);
 gap: 28px;
 align-items: end;
}
.extend-side { display: grid; gap: 12px; justify-items: start; }
.extend-side a { font-size: 18px; }
.site-footer { background: var(--deep); color: var(--on-dark); padding: 48px 0 28px; }
.foot-grid { display: grid; grid-template-columns: 1.3fr .8fr .9fr .8fr; gap: 28px; }
.foot-logo span { color: var(--on-dark); }
.site-footer h2 { font-size: 14px; letter-spacing: .14em; font-weight: 500; color: var(--copper); margin-bottom: 12px; }
.site-footer a { display: block; color: var(--on-dark); padding: 4px 0; font-size: 15px; }
.site-footer a:hover { color: #E7C2A8; }
.copy { margin-top: 28px; padding-top: 16px; border-top: 1px solid var(--line-deep); color: var(--muted-deep); font-size: 13px; }
@media (max-width: 1023px) {
 h1 { font-size: 40px; }
 h2 { font-size: 28px; }
 .foot-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
 .filter-bar { grid-template-columns: 1fr; }
 .timeline { grid-template-columns: 1fr 1fr; }
 .extend { grid-template-columns: 1fr; }
}
@media (max-width: 639px) {
 :root { --space: 40px; }
 h1 { font-size: 32px; }
 h2 { font-size: 24px; }
 .nav-desktop { display: none; }
 .nav-mobile {
 display: grid;
 grid-template-columns: auto 1fr auto;
 align-items: center;
 min-height: 64px;
 gap: 8px;
 }
 .logo { min-width: 0; }
 .logo span { font-size: 14px; }
 .page-head, .entry, .def, .news-list a, .tip, .foot-grid { grid-template-columns: 1fr; }
 .entry time { padding-top: 0; }
 .timeline { grid-template-columns: 1fr; }
 .timeline li { border-top: 0; border-left: 1px solid var(--copper); padding: 0 0 18px 14px; }
 .crumb { white-space: normal; }
 .page-head { align-items: flex-start; }
}
@media (prefers-reduced-motion: reduce) {
 html { scroll-behavior: auto; }
 *, *::before, *::after { transition: none !important; }
}