/* roulang page: index */
:root {
  --paper: #F3F0E8;
  --paper-2: #E7EFE4;
  --ink: #1E1A17;
  --muted: #5C534C;
  --plum: #6E2E4C;
  --green: #2F6B4F;
  --lime: #E2F07A;
  --orange: #E4572E;
  --orange-deep: #c9451f;
  --board: #14181A;
  --cream: #F7F3EA;
  --line: #D9D2C5;
  --card: #FFFCF7;
  --shadow: 0 12px 28px rgba(30, 26, 23, .08);
  --radius: 16px;
  --max: 1160px;
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--ink);
  background: var(--paper);
}
img { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }
button { cursor: pointer; }
a { color: var(--green); text-underline-offset: 3px; }
a:hover { color: var(--plum); }
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: 46px; line-height: 1.25; font-weight: 760; letter-spacing: -0.02em; margin-bottom: .35em; }
h2 { font-size: 32px; line-height: 1.35; font-weight: 740; margin-bottom: .4em; }
h3 { font-size: 19px; line-height: 1.45; font-weight: 700; margin-bottom: .35em; }
p { margin-bottom: .9em; }
.container { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: linear-gradient(100deg, #6E2E4C 0%, #2F6B4F 56%, #1A4540 100%);
  color: var(--cream);
  box-shadow: 0 8px 24px rgba(20, 24, 26, .18);
}
.nav-bar {
  min-height: 76px;
  display: flex;
  align-items: center;
  gap: 18px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--cream);
  text-decoration: none;
  margin-right: auto;
  min-width: 0;
}
.logo:hover { color: var(--cream); text-decoration: none; }
.logo-mark {
  width: 42px;
  height: 42px;
  flex: none;
  border-radius: 13px;
  display: grid;
  place-items: center;
  background: rgba(226, 240, 122, .16);
  border: 1px solid rgba(226, 240, 122, .7);
  color: var(--lime);
  font-weight: 800;
  letter-spacing: .04em;
  font-size: 13px;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.2; min-width: 0; }
.logo-text strong { font-size: 15px; font-weight: 740; white-space: nowrap; }
.logo-text small { font-size: 12px; color: rgba(247, 243, 234, .78); }
.nav-links { display: flex; align-items: center; gap: 6px; list-style: none; margin: 0; padding: 0; }
.nav-links a {
  color: var(--cream);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 12px;
  border-radius: 999px;
  font-size: 14.5px;
}
.nav-links a:hover { background: rgba(247, 243, 234, .14); color: var(--cream); text-decoration: none; }
.nav-links a[aria-current="page"] { box-shadow: inset 0 -2px 0 var(--lime); background: rgba(247, 243, 234, .1); }
.nav-toggle {
  display: none;
  border: 1px solid rgba(247, 243, 234, .45);
  background: transparent;
  color: var(--cream);
  border-radius: 999px;
  min-height: 40px;
  padding: 0 14px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 700;
  line-height: 1;
  transition: transform .18s ease, background .18s ease, box-shadow .18s ease, color .18s ease;
}
.btn:hover { text-decoration: none; }
.btn:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}
.btn-primary { background: var(--orange); color: var(--cream); }
.btn-primary:hover { background: var(--orange-deep); color: var(--cream); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); background: #b83d1a; }
.btn-ghost { background: transparent; color: var(--plum); border-color: var(--plum); }
.btn-ghost:hover { background: var(--plum); color: var(--cream); transform: translateY(-1px); }
.btn-line { background: transparent; color: var(--cream); border-color: rgba(247, 243, 234, .55); }
.btn-line:hover { background: rgba(247, 243, 234, .12); color: var(--cream); }
.nav-cta { min-height: 40px; padding: 0 16px; }
section { padding: 72px 0; }
.band { background: var(--paper-2); }
.band-dark { background: var(--board); color: var(--cream); }
.sec-head { margin-bottom: 28px; max-width: 760px; }
.sec-head.split { max-width: none; display: grid; grid-template-columns: .9fr 1.1fr; gap: 28px; align-items: end; }
.lane-tag {
  margin: 0 0 8px;
  color: var(--plum);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .08em;
  font-variant-numeric: tabular-nums;
}
.band-dark .lane-tag { color: var(--lime); }
.sec-desc { margin: 0; color: var(--muted); }
.band-dark .sec-desc { color: rgba(247, 243, 234, .82); }
.board-wrap { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr); gap: 28px; align-items: stretch; }
.kicker { margin: 0 0 8px; color: var(--green); font-weight: 800; font-size: 14px; }
.lead { color: var(--ink); max-width: 62ch; }
.board-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.adult-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 18px; }
.chip {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: var(--lime);
  color: var(--ink);
  font-size: 12px;
  font-weight: 800;
}
.chip-line { background: transparent; border: 1px solid var(--line); color: var(--plum); }
.score {
  background: var(--board);
  color: var(--cream);
  border-radius: 22px;
  padding: 16px;
  box-shadow: var(--shadow);
  border: 1px solid #2a3033;
}
.score-top { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; font-size: 13px; color: rgba(247, 243, 234, .8); }
.lane-no {
  font-variant-numeric: tabular-nums;
  background: rgba(226, 240, 122, .14);
  color: var(--lime);
  border-radius: 8px;
  padding: 2px 7px;
  font-weight: 800;
}
.live { margin-left: auto; display: inline-flex; align-items: center; gap: 6px; }
.live i { width: 8px; height: 8px; border-radius: 50%; background: var(--lime); display: block; }
.score-grid { display: grid; grid-template-columns: 1.35fr .9fr; gap: 10px; }
.metric {
  background: #1d2326;
  border: 1px solid #31383c;
  border-radius: 14px;
  padding: 14px 14px 12px;
  min-height: 112px;
}
.metric span { display: block; color: rgba(247, 243, 234, .72); font-size: 13px; }
.metric strong {
  display: block;
  margin: 6px 0 2px;
  font-size: 40px;
  line-height: 1;
  font-weight: 780;
  font-variant-numeric: tabular-nums;
  color: var(--cream);
}
.metric em { font-style: normal; color: var(--lime); font-size: 13px; }
.m-wide { grid-column: 1 / -1; min-height: 96px; display: grid; grid-template-columns: 1fr auto; align-items: end; }
.m-wide strong { font-size: 52px; }
.m-sync { grid-row: span 2; min-height: 236px; display: flex; flex-direction: column; justify-content: space-between; background: linear-gradient(180deg, #243033, #1d2326); }
.matrix { display: grid; grid-template-columns: 1.45fr .85fr; gap: 16px; align-items: start; }
.matrix-main, .side-card, .scene, .swim, .feature-card, .slim-card, .news-main, .news-item, .device, .qa-item, .entry, .timeline li, .sub-col, .form-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.matrix-main { padding: 28px; min-height: 360px; position: relative; overflow: hidden; }
.matrix-main::after {
  content: "";
  position: absolute;
  left: 24px; right: 24px; bottom: 24px;
  height: 10px;
  border-top: 2px solid var(--green);
  border-bottom: 2px solid var(--lime);
}
.matrix-side { display: flex; flex-direction: column; gap: 16px; }
.side-card { padding: 20px; }
.side-card:first-child { margin-top: 34px; }
.side-card:last-child { margin-left: 22px; }
.meta-row, .card-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.tag {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 8px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--plum);
  font-size: 12px;
  font-weight: 760;
}
.tag-green { color: var(--green); }
.tag-orange { color: var(--orange); border-color: #f0c2b6; background: #fff4ef; }
.scene-list { display: flex; flex-direction: column; gap: 12px; }
.scene {
  display: grid;
  grid-template-columns: 92px 1.15fr .7fr 1.15fr;
  gap: 14px;
  align-items: center;
  padding: 16px 18px;
  position: relative;
}
.scene::before {
  content: "";
  position: absolute;
  left: 0; top: 14px; bottom: 14px;
  width: 4px;
  border-radius: 4px;
  background: var(--green);
}
.scene:nth-child(2)::before { background: var(--plum); }
.scene:nth-child(3)::before { background: var(--orange); }
.scene b { font-variant-numeric: tabular-nums; font-size: 20px; }
.scene p, .slim-card p, .feature-card p, .news-item p, .device p, .entry p, .sub-col p { margin: 0; color: var(--muted); }
.race { display: flex; flex-direction: column; gap: 14px; }
.race-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.swim { padding: 18px 18px 16px; }
.swim header { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; }
.swim header span { color: var(--muted); font-variant-numeric: tabular-nums; font-size: 14px; }
.bar { height: 10px; border-radius: 99px; background: #E7E1D6; overflow: hidden; margin: 10px 0 8px; }
.bar i { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--green), var(--lime)); }
.swim.alt .bar i { background: linear-gradient(90deg, var(--plum), var(--orange)); }
.reel-track, .article-track {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 4px 2px 12px;
}
.reel-track::-webkit-scrollbar, .article-track::-webkit-scrollbar { height: 8px; }
.reel-track::-webkit-scrollbar-thumb, .article-track::-webkit-scrollbar-thumb { background: var(--plum); border-radius: 99px; }
.feature-card, .slim-card, .article-card {
  scroll-snap-align: start;
  text-decoration: none;
  color: inherit;
  padding: 18px;
  display: flex;
  flex-direction: column;
  min-height: 230px;
  transition: transform .18s ease, box-shadow .18s ease;
}
.feature-card { flex: 0 0 430px; background: #241820; color: var(--cream); border-color: #3a2a33; }
.slim-card { flex: 0 0 250px; }
.feature-card p { color: rgba(247, 243, 234, .78); }
.feature-card:hover, .slim-card:hover, .article-card:hover, .news-main:hover, .news-item:hover, .entry:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px rgba(30, 26, 23, .12);
  text-decoration: none;
  color: inherit;
}
.feature-card:hover h3 { color: var(--lime); }
.slim-card:hover h3, .article-card:hover h3, .news-main:hover h3, .news-item:hover h3, .entry:hover h3 { color: var(--plum); }
.safe-frame {
  margin-top: auto;
  height: 92px;
  border: 1px dashed rgba(226, 240, 122, .8);
  border-radius: 12px;
  display: flex;
  align-items: flex-end;
  padding: 8px;
}
.caption-bar { height: 16px; width: 72%; border-radius: 6px; background: var(--lime); }
.timeline { list-style: none; margin: 0; padding: 0 0 0 18px; border-left: 2px solid var(--green); display: flex; flex-direction: column; gap: 14px; }
.timeline li { margin-left: 18px; padding: 18px 18px 8px; position: relative; }
.timeline li::before {
  content: "";
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--lime);
  border: 2px solid var(--green);
  position: absolute;
  left: -26px; top: 24px;
}
.sub-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.sub-col { padding: 22px; }
.frame-demo {
  height: 180px;
  border-radius: 12px;
  background:
    linear-gradient(180deg, transparent 62%, rgba(226, 240, 122, .95) 62%, rgba(226, 240, 122, .95) 74%, transparent 74%),
    repeating-linear-gradient(90deg, #d7e3d8 0 12px, #edf3ee 12px 24px);
  border: 1px solid var(--line);
  position: relative;
}
.frame-demo::before {
  content: "字幕安全框";
  position: absolute;
  inset: 16px 16px 58px;
  border: 1px dashed var(--plum);
  border-radius: 10px;
  color: var(--plum);
  font-size: 13px;
  display: flex;
  align-items: flex-start;
  padding: 8px;
}
.news-grid { display: grid; grid-template-columns: 1.45fr .8fr; gap: 14px; }
.news-main, .news-item { display: block; text-decoration: none; color: inherit; padding: 20px; }
.news-main { min-height: 100%; }
.news-side { display: flex; flex-direction: column; gap: 10px; }
.news-item { padding: 14px 16px; box-shadow: none; }
.news-item h3 { font-size: 16px; }
.badges { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.badge {
  border: 1px solid #343b3e;
  background: #1c2225;
  border-radius: var(--radius);
  padding: 18px 16px 12px;
}
.badge svg { width: 28px; height: 28px; stroke: var(--lime); fill: none; stroke-width: 1.8; }
.badge p { color: rgba(247, 243, 234, .78); }
.devices { display: grid; grid-template-columns: .9fr 1fr 1.2fr; gap: 14px; align-items: end; }
.device { padding: 18px 18px 8px; }
.device:nth-child(1) { min-height: 250px; }
.device:nth-child(2) { min-height: 310px; }
.device:nth-child(3) { min-height: 370px; }
.device .screen {
  margin-top: 16px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--paper-2);
  position: relative;
}
.device:nth-child(1) .screen { height: 96px; }
.device:nth-child(2) .screen { height: 130px; }
.device:nth-child(3) .screen { height: 168px; }
.device .screen span {
  position: absolute;
  left: 10%; right: 10%;
  bottom: 10px;
  height: 14px;
  border-radius: 5px;
  background: var(--plum);
}
.qa-list, .faq-list { display: flex; flex-direction: column; gap: 10px; }
.qa-item { padding: 16px 18px 8px; box-shadow: none; }
.qa-item h3 { font-size: 18px; }
.faq-item { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.faq-item summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 16px 18px;
  font-weight: 740;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { background: rgba(110, 46, 76, .04); }
.faq-item[open] summary { color: var(--plum); }
.faq-item .ans { padding: 0 18px 14px 58px; color: var(--muted); }
.idx {
  width: 32px; height: 32px; flex: none;
  border-radius: 10px;
  display: grid; place-items: center;
  background: var(--paper-2);
  color: var(--green);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  font-weight: 800;
}
.entries { display: grid; grid-template-columns: 1.35fr .85fr; gap: 16px; align-items: start; }
.entry { display: block; text-decoration: none; color: inherit; padding: 24px; min-height: 230px; }
.entry.shift { margin-top: 42px; background: #241820; color: var(--cream); border-color: #3a2a33; }
.entry.shift p { color: rgba(247, 243, 234, .78); }
.entry.shift:hover h3 { color: var(--lime); }
.article-card { flex: 0 0 280px; min-height: 210px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.form-card { padding: 22px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field.wide { grid-column: 1 / -1; }
.field span { font-weight: 700; }
.field input, .field select, .field textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 12px;
  min-height: 46px;
  padding: 10px 12px;
  line-height: 1.5;
}
.field textarea { min-height: 120px; resize: vertical; }
.field.is-error input, .field.is-error select, .field.is-error textarea { border-color: var(--plum); box-shadow: 0 0 0 3px rgba(110, 46, 76, .12); }
.err { color: var(--plum); font-size: 13px; margin: 0; }
.form-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-top: 8px; }
.note-ok { background: #e7f3ea; border: 1px solid #b7d7c4; color: var(--green); border-radius: 12px; padding: 12px 14px; margin-bottom: 14px; }
.site-footer { background: var(--board); color: var(--cream); padding: 42px 0 28px; }
.foot { display: flex; justify-content: space-between; gap: 24px; align-items: flex-start; }
.foot .logo-text strong { font-size: 18px; }
.foot p { color: rgba(247, 243, 234, .76); max-width: 46ch; }
.foot-links { display: flex; flex-wrap: wrap; gap: 10px 16px; }
.foot-links a { color: var(--cream); text-decoration: none; }
.foot-links a:hover { color: var(--lime); text-decoration: underline; }
.copy { margin: 22px 0 0; padding-top: 16px; border-top: 1px solid #30363a; color: rgba(247, 243, 234, .62); font-size: 13px; }
@media (max-width: 1100px) {
  h1 { font-size: 40px; }
  .nav-toggle { display: inline-flex; }
  .nav-links {
    display: none;
    position: absolute;
    left: 0; right: 0; top: 100%;
    flex-direction: column;
    align-items: stretch;
    background: #1d3f38;
    padding: 10px;
    border-top: 1px solid rgba(226, 240, 122, .25);
  }
  .nav-links.is-open { display: flex; }
  .nav-links a { min-height: 44px; }
  .board-wrap, .matrix, .sec-head.split { grid-template-columns: 1fr; }
  .side-card:first-child, .side-card:last-child, .entry.shift { margin: 0; }
}
@media (max-width: 768px) {
  section { padding: 40px 0; }
  h1 { font-size: 34px; }
  h2 { font-size: 28px; }
  .race-row, .sub-grid, .news-grid, .devices, .badges, .entries, .form-grid, .scene { grid-template-columns: 1fr; }
  .score-grid { grid-template-columns: 1fr 1fr; }
  .m-sync { grid-row: auto; min-height: 140px; }
  .m-wide strong { font-size: 42px; }
  .device, .device:nth-child(1), .device:nth-child(2), .device:nth-child(3) { min-height: 0; }
  .matrix-main { min-height: 0; }
  .feature-card { flex-basis: 82vw; }
  .faq-item .ans { padding-left: 18px; }
}
@media (max-width: 480px) {
  .container { width: min(var(--max), calc(100% - 22px)); }
  .logo-text strong { white-space: normal; font-size: 13px; }
  .nav-cta { display: none; }
  .score-grid, .m-wide { grid-template-columns: 1fr; }
  .m-wide, .m-sync, .m-clear, .m-update { grid-column: auto; grid-row: auto; }
  .board-actions .btn, .form-actions .btn { width: 100%; }
  h1 { font-size: 30px; }
  .foot { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}

/* roulang page: category1 */
:root {
 --paper: #F3F0E8;
 --paper-2: #E7EFE4;
 --ink: #1E1A17;
 --muted: #5C534C;
 --plum: #6E2E4C;
 --green: #2F6B4F;
 --lime: #E2F07A;
 --orange: #E4572E;
 --orange-deep: #c9451f;
 --board: #14181A;
 --cream: #F7F3EA;
 --line: #D9D2C5;
 --card: #FFFCF7;
 --shadow: 0 12px 28px rgba(30, 26, 23, .08);
 --radius: 16px;
 --max: 1160px;
 --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
 margin: 0;
 font-family: var(--font);
 font-size: 16.5px;
 line-height: 1.85;
 color: var(--ink);
 background: var(--paper);
}
img { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }
button { cursor: pointer; }
a { color: var(--green); text-underline-offset: 3px; }
a:hover { color: var(--plum); }
p { margin: 0 0 .9em; }
h1, h2, h3 { margin: 0; font-weight: 760; letter-spacing: 0; }
h1 { font-size: 44px; line-height: 1.25; }
h2 { font-size: 30px; line-height: 1.35; }
h3 { font-size: 19px; line-height: 1.4; }
.container { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.site-header {
 position: sticky;
 top: 0;
 z-index: 40;
 background: linear-gradient(100deg, #6E2E4C 0%, #2F6B4F 56%, #1A4540 100%);
 color: var(--cream);
 box-shadow: 0 8px 24px rgba(20, 24, 26, .18);
}
.nav-bar {
 min-height: 76px;
 display: flex;
 align-items: center;
 gap: 18px;
 position: relative;
}
.logo {
 display: flex;
 align-items: center;
 gap: 10px;
 color: var(--cream);
 text-decoration: none;
 margin-right: auto;
 min-width: 0;
}
.logo:hover { color: var(--cream); text-decoration: none; }
.logo-mark {
 width: 42px;
 height: 42px;
 flex: none;
 border-radius: 13px;
 display: grid;
 place-items: center;
 background: rgba(226, 240, 122, .16);
 border: 1px solid rgba(226, 240, 122, .7);
 color: var(--lime);
 font-weight: 800;
 letter-spacing: .04em;
 font-size: 13px;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.2; min-width: 0; }
.logo-text strong { font-size: 15px; font-weight: 740; white-space: nowrap; }
.logo-text small { font-size: 12px; color: rgba(247, 243, 234, .78); }
.nav-links { display: flex; align-items: center; gap: 6px; list-style: none; margin: 0; padding: 0; }
.nav-links a {
 color: var(--cream);
 text-decoration: none;
 display: inline-flex;
 align-items: center;
 min-height: 38px;
 padding: 0 12px;
 border-radius: 999px;
 font-size: 14.5px;
}
.nav-links a:hover { background: rgba(247, 243, 234, .14); color: var(--cream); text-decoration: none; }
.nav-links a[aria-current="page"] { box-shadow: inset 0 -2px 0 var(--lime); background: rgba(247, 243, 234, .1); }
.nav-toggle {
 display: none;
 border: 1px solid rgba(247, 243, 234, .45);
 background: transparent;
 color: var(--cream);
 border-radius: 999px;
 min-height: 40px;
 padding: 0 14px;
}
.nav-toggle:hover { background: rgba(247, 243, 234, .12); }
.nav-toggle:active { background: rgba(247, 243, 234, .2); }
.btn {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 min-height: 44px;
 padding: 0 18px;
 border-radius: 999px;
 border: 1px solid transparent;
 text-decoration: none;
 font-weight: 700;
 line-height: 1;
 transition: transform .18s ease, background .18s ease, box-shadow .18s ease, color .18s ease;
}
.btn:hover { text-decoration: none; }
.btn:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible {
 outline: 2px solid var(--lime);
 outline-offset: 2px;
}
.btn-primary { background: var(--orange); color: var(--cream); }
.btn-primary:hover { background: var(--orange-deep); color: var(--cream); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); background: #b83d1a; }
.btn-ghost { background: transparent; color: var(--plum); border-color: var(--plum); }
.btn-ghost:hover { background: var(--plum); color: var(--cream); transform: translateY(-1px); }
.btn-ghost:active { transform: translateY(0); }
.nav-cta { min-height: 40px; padding: 0 16px; }
section { padding: 72px 0; }
.lane-tag {
 margin: 0 0 8px;
 color: var(--plum);
 font-size: 13px;
 font-weight: 800;
 letter-spacing: .08em;
 font-variant-numeric: tabular-nums;
}
.lead { color: var(--ink); max-width: 62ch; margin-bottom: 0; }
.adult-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 18px; }
.chip {
 display: inline-flex;
 align-items: center;
 min-height: 28px;
 padding: 0 10px;
 border-radius: 999px;
 background: var(--lime);
 color: var(--ink);
 font-size: 12px;
 font-weight: 800;
}
.chip-line { background: transparent; border: 1px solid var(--line); color: var(--plum); }
.tag {
 display: inline-flex;
 align-items: center;
 min-height: 26px;
 padding: 0 8px;
 border-radius: 999px;
 border: 1px solid var(--line);
 background: var(--paper);
 color: var(--plum);
 font-size: 12px;
 font-weight: 760;
}
.tag-green { color: var(--green); }
.tag-orange { color: var(--orange); border-color: #f0c2b6; background: #fff4ef; }
.meta-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.cat-top { background: var(--paper); padding-top: 56px; }
.cat-top-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 28px; align-items: end; }
.filter-lane {
 display: flex;
 flex-wrap: wrap;
 gap: 8px;
 padding: 16px;
 background: var(--card);
 border: 1px solid var(--line);
 border-radius: var(--radius);
 box-shadow: var(--shadow);
 position: relative;
}
.filter-lane::before {
 content: "";
 position: absolute;
 left: 16px;
 right: 16px;
 top: 8px;
 border-top: 2px solid var(--green);
}
.filter-btn {
 border: 1px solid var(--line);
 background: var(--paper);
 color: var(--ink);
 border-radius: 999px;
 min-height: 36px;
 padding: 0 12px;
 font-size: 13.5px;
 font-weight: 700;
 margin-top: 6px;
}
.filter-btn:hover { border-color: var(--plum); color: var(--plum); }
.filter-btn.is-on { background: var(--plum); color: var(--cream); border-color: var(--plum); }
.filter-btn:active { transform: translateY(1px); }
.catalog { background: var(--paper-2); border-top: 1px solid var(--line); }
.section-head { display: flex; justify-content: space-between; gap: 18px; align-items: end; margin-bottom: 22px; }
.section-head p { margin: 6px 0 0; color: var(--muted); max-width: 46ch; }
.stack { display: flex; flex-direction: column; gap: 14px; }
.row-card {
 display: grid;
 grid-template-columns: 1.45fr .72fr;
 gap: 14px;
}
.wide, .params, .lang-card, .dur-card, .extend-card, .article-card, .guard-note {
 background: var(--card);
 border: 1px solid var(--line);
 border-radius: var(--radius);
 box-shadow: var(--shadow);
}
.wide { padding: 16px; display: grid; grid-template-columns: 220px 1fr; gap: 16px; align-items: center; }
.letterbox {
 position: relative;
 height: 148px;
 border-radius: 12px;
 background:
  linear-gradient(#14181A, #14181A) top / 100% 18px no-repeat,
  linear-gradient(#14181A, #14181A) bottom / 100% 22px no-repeat,
  linear-gradient(100deg, #6E2E4C 0%, #2F6B4F 72%, #1A4540 100%);
 overflow: hidden;
}
.safe-frame {
 position: absolute;
 inset: 28px 14px 34px;
 border: 1px dashed rgba(226, 240, 122, .9);
 border-radius: 6px;
}
.sub-bar {
 position: absolute;
 left: 12%;
 right: 12%;
 bottom: 28px;
 min-height: 22px;
 padding: 0 8px;
 background: rgba(20, 24, 26, .78);
 color: var(--cream);
 font-size: 12px;
 display: flex;
 align-items: center;
 justify-content: center;
}
.lane-no {
 position: absolute;
 top: 24px;
 left: 14px;
 color: var(--lime);
 font-variant-numeric: tabular-nums;
 font-weight: 800;
 font-size: 13px;
}
.wide p, .params p, .lang-card p, .dur-card p, .extend-card p, .article-card p, .guard-note p { color: var(--muted); margin: 0; }
.params { padding: 16px 16px 8px; }
.params dl { margin: 12px 0 0; }
.params div {
 display: flex;
 justify-content: space-between;
 gap: 12px;
 padding: 8px 0;
 border-top: 1px solid var(--line);
 font-size: 14.5px;
}
.params dt { color: var(--muted); }
.params dd { margin: 0; font-variant-numeric: tabular-nums; font-weight: 700; }
.density { background: var(--board); color: var(--cream); }
.density .lane-tag { color: var(--lime); }
.density .section-head p { color: rgba(247, 243, 234, .76); }
.week-bars {
 list-style: none;
 margin: 0;
 padding: 18px 8px 0;
 display: grid;
 grid-template-columns: repeat(7, 1fr);
 gap: 12px;
 border-top: 2px solid rgba(226, 240, 122, .45);
}
.week-bars li { display: flex; flex-direction: column; align-items: center; gap: 8px; min-width: 0; }
.bar {
 width: 100%;
 height: 160px;
 border-radius: 12px;
 background: rgba(247, 243, 234, .06);
 border: 1px solid rgba(247, 243, 234, .12);
 display: flex;
 align-items: flex-end;
 overflow: hidden;
}
.bar span {
 display: block;
 width: 100%;
 height: var(--h);
 background: linear-gradient(180deg, var(--lime), #8fb15a 28%, var(--green));
 border-radius: 0 0 10px 10px;
}
.week-bars b { font-size: 14px; font-weight: 700; }
.week-bars em { font-style: normal; color: var(--lime); font-variant-numeric: tabular-nums; font-size: 13px; }
.langs { background: var(--paper); }
.lang-grid { display: grid; grid-template-columns: 1.1fr .9fr .9fr; gap: 14px; }
.lang-card { padding: 20px; min-height: 180px; display: flex; flex-direction: column; gap: 8px; }
.lang-card:first-child { background: #241820; color: var(--cream); }
.lang-card:first-child p { color: rgba(247, 243, 234, .78); }
.lang-no { font-variant-numeric: tabular-nums; color: var(--plum); font-weight: 800; font-size: 13px; }
.lang-card:first-child .lang-no { color: var(--lime); }
.anchor-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; }
.anchor-row a {
 color: var(--green);
 text-decoration: none;
 border-bottom: 1px solid transparent;
 font-weight: 700;
}
.lang-card:first-child .anchor-row a { color: var(--lime); }
.anchor-row a:hover { text-decoration: underline; color: var(--plum); }
.duration { background: var(--paper-2); border-top: 1px solid var(--line); }
.dur-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 14px; }
.dur-card { padding: 22px; }
.dur-card header { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; margin-bottom: 8px; }
.dur-card header span { color: var(--muted); font-variant-numeric: tabular-nums; }
.track { height: 12px; border-radius: 999px; background: #efe8dc; border: 1px solid var(--line); overflow: hidden; margin: 14px 0; }
.track i { display: block; height: 100%; width: var(--w); background: var(--green); border-radius: inherit; }
.track.hot i { background: var(--orange); }
.dur-meta { display: flex; justify-content: space-between; gap: 10px; color: var(--muted); font-size: 14px; font-variant-numeric: tabular-nums; }
.extend { background: var(--paper); }
.extend-card { padding: 8px 18px; }
.extend-row {
 display: grid;
 grid-template-columns: 72px 1.4fr .7fr .6fr;
 gap: 10px;
 align-items: center;
 padding: 14px 0;
 border-bottom: 1px solid var(--line);
}
.extend-row:last-child { border-bottom: 0; }
.extend-row strong { font-variant-numeric: tabular-nums; color: var(--plum); }
.extend-row span { color: var(--muted); font-variant-numeric: tabular-nums; }
.more-wrap { display: flex; justify-content: flex-end; margin-top: 16px; }
.articles { background: var(--paper-2); }
.article-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 12px; }
.article-card {
 padding: 18px;
 min-height: 210px;
 color: inherit;
 text-decoration: none;
 display: flex;
 flex-direction: column;
 gap: 8px;
 transition: transform .18s ease, box-shadow .18s ease;
}
.article-card:hover { transform: translateY(-2px); box-shadow: 0 16px 30px rgba(30, 26, 23, .12); color: inherit; text-decoration: none; }
.article-card:active { transform: translateY(0); }
.article-card.feature { background: #241820; color: var(--cream); }
.article-card.feature p { color: rgba(247, 243, 234, .76); }
.article-card em { font-style: normal; color: var(--plum); font-size: 12px; font-weight: 800; letter-spacing: .06em; }
.article-card.feature em { color: var(--lime); }
.guard { background: var(--paper); border-top: 1px solid var(--line); }
.badge-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 14px; }
.badge {
 background: var(--card);
 border: 1px solid var(--line);
 border-radius: var(--radius);
 box-shadow: var(--shadow);
 padding: 16px;
 min-height: 116px;
}
.badge b { display: block; margin-bottom: 4px; }
.badge span { color: var(--muted); font-size: 14.5px; }
.mark {
 width: 28px;
 height: 28px;
 border-radius: 9px;
 display: grid;
 place-items: center;
 background: var(--lime);
 color: var(--ink);
 font-size: 12px;
 font-weight: 800;
 margin-bottom: 8px;
 font-variant-numeric: tabular-nums;
}
.guard-note { padding: 18px 20px; }
.site-footer { background: var(--board); color: var(--cream); padding: 36px 0 18px; }
.foot { display: flex; justify-content: space-between; gap: 24px; align-items: start; }
.site-footer .logo-text strong { color: var(--cream); font-size: 16px; }
.site-footer p { color: rgba(247, 243, 234, .78); max-width: 46ch; }
.foot-links { display: flex; flex-wrap: wrap; gap: 12px 18px; }
.foot-links a { color: var(--cream); text-decoration: none; }
.foot-links a:hover { color: var(--lime); text-decoration: underline; }
.copy { color: rgba(247, 243, 234, .66); font-size: 13px; margin-top: 18px; }
[hidden] { display: none !important; }
@media (max-width: 1100px) {
 .nav-toggle { display: inline-flex; }
 .nav-links {
  display: none;
  position: absolute;
  left: 0;
  right: 0;
  top: calc(100% + 8px);
  flex-direction: column;
  align-items: stretch;
  background: #1A4540;
  padding: 10px;
  border-radius: 14px;
  z-index: 50;
 }
 .nav-links.open { display: flex; }
 .nav-links a { width: 100%; }
 .cat-top-grid, .row-card, .lang-grid, .dur-grid, .article-grid { grid-template-columns: 1fr; }
 .wide { grid-template-columns: 180px 1fr; }
 .article-card.feature { min-height: 0; }
 .badge-row { grid-template-columns: 1fr 1fr; }
 h1 { font-size: 36px; }
}
@media (max-width: 768px) {
 section { padding: 40px 0; }
 .cat-top { padding-top: 36px; }
 h1 { font-size: 32px; }
 h2 { font-size: 26px; }
 .section-head, .foot, .wide, .extend-row { display: flex; flex-direction: column; align-items: stretch; }
 .logo-text strong { font-size: 13px; }
 .week-bars { gap: 8px; }
 .bar { height: 120px; }
 .nav-cta { min-height: 36px; padding: 0 10px; font-size: 13px; }
}
@media (max-width: 480px) {
 .container { width: min(var(--max), calc(100% - 20px)); }
 h1 { font-size: 28px; }
 .logo-mark { width: 36px; height: 36px; }
 .logo-text small { display: none; }
 .logo-text strong { font-size: 12px; }
 .badge-row, .week-bars { grid-template-columns: 1fr 1fr; }
 .week-bars { grid-template-columns: repeat(4, 1fr); }
 .week-bars li:last-child { grid-column: 2 / span 2; }
 .letterbox { height: 128px; }
}

/* roulang page: category2 */
:root {
  --paper: #F3F0E8;
  --paper-2: #E7EFE4;
  --ink: #1E1A17;
  --muted: #5C534C;
  --plum: #6E2E4C;
  --green: #2F6B4F;
  --lime: #E2F07A;
  --orange: #E4572E;
  --orange-deep: #c9451f;
  --board: #14181A;
  --cream: #F7F3EA;
  --line: #D9D2C5;
  --card: #FFFCF7;
  --shadow: 0 12px 28px rgba(30, 26, 23, .08);
  --radius: 16px;
  --max: 1160px;
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--ink);
  background: var(--paper);
}
img { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }
button { cursor: pointer; }
a { color: var(--green); text-underline-offset: 3px; }
a:hover { color: var(--plum); }
p { margin: 0 0 .9em; }
h1, h2, h3 { margin: 0; line-height: 1.25; font-weight: 760; }
h1 { font-size: 46px; letter-spacing: -.02em; }
h2 { font-size: 31px; line-height: 1.35; }
h3 { font-size: 19px; line-height: 1.4; }
ul { margin: 0; padding: 0; }
.container { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: linear-gradient(100deg, #6E2E4C 0%, #2F6B4F 56%, #1A4540 100%);
  color: var(--cream);
  box-shadow: 0 8px 24px rgba(20, 24, 26, .18);
}
.nav-bar {
  min-height: 76px;
  display: flex;
  align-items: center;
  gap: 18px;
  position: relative;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--cream);
  text-decoration: none;
  margin-right: auto;
  min-width: 0;
}
.logo:hover { color: var(--cream); text-decoration: none; }
.logo-mark {
  width: 42px;
  height: 42px;
  flex: none;
  border-radius: 13px;
  display: grid;
  place-items: center;
  background: rgba(226, 240, 122, .16);
  border: 1px solid rgba(226, 240, 122, .7);
  color: var(--lime);
  font-weight: 800;
  letter-spacing: .04em;
  font-size: 13px;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.2; min-width: 0; }
.logo-text strong { font-size: 15px; font-weight: 740; white-space: nowrap; }
.logo-text small { font-size: 12px; color: rgba(247, 243, 234, .78); }
.nav-links { display: flex; align-items: center; gap: 6px; list-style: none; margin: 0; padding: 0; }
.nav-links a {
  color: var(--cream);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 12px;
  border-radius: 999px;
  font-size: 14.5px;
}
.nav-links a:hover { background: rgba(247, 243, 234, .14); color: var(--cream); text-decoration: none; }
.nav-links a[aria-current="page"] { box-shadow: inset 0 -2px 0 var(--lime); background: rgba(247, 243, 234, .1); }
.nav-toggle {
  display: none;
  border: 1px solid rgba(247, 243, 234, .45);
  background: transparent;
  color: var(--cream);
  border-radius: 999px;
  min-height: 40px;
  padding: 0 14px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 700;
  line-height: 1;
  transition: transform .18s ease, background .18s ease, box-shadow .18s ease, color .18s ease;
}
.btn:hover { text-decoration: none; }
.btn:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}
.btn-primary { background: var(--orange); color: var(--cream); }
.btn-primary:hover { background: var(--orange-deep); color: var(--cream); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); background: #b83d1a; }
.nav-cta { min-height: 40px; padding: 0 16px; }
section { padding: 72px 0; }
.band-alt { background: var(--paper-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.band-dark { background: var(--board); color: var(--cream); }
.lane-tag {
  margin: 0 0 8px;
  color: var(--plum);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .08em;
  font-variant-numeric: tabular-nums;
}
.band-dark .lane-tag { color: var(--lime); }
.lead { color: var(--ink); max-width: 62ch; margin-bottom: 0; }
.band-dark .lead { color: rgba(247, 243, 234, .82); }
.section-head { margin-bottom: 22px; max-width: 70ch; }
.section-head p:last-child { margin-bottom: 0; color: var(--muted); }
.band-dark .section-head p:last-child { color: rgba(247, 243, 234, .78); }
.adult-row, .jump-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 18px; }
.chip, .tag, .badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
}
.chip { background: var(--lime); color: var(--ink); }
.chip-line, .jump-row a {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--plum);
  text-decoration: none;
  border-radius: 999px;
  min-height: 32px;
  padding: 0 12px;
  display: inline-flex;
  align-items: center;
  font-size: 13px;
  font-weight: 700;
}
.jump-row a:hover { background: var(--plum); color: var(--cream); text-decoration: none; }
.chap-grid, .split, .device-grid, .form-grid {
  display: grid;
  gap: 16px;
}
.chap-grid { grid-template-columns: 1.15fr .85fr; align-items: center; gap: 28px; }
.frame, .pane, .term, .device, .qa-item, .article-feature, .article-row, .form-card, .timeline li {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.frame { background: var(--board); color: var(--cream); padding: 16px; border-color: #2a3134; }
.frame-top, .swim-top, .card-meta, .meta-row {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}
.frame-top { color: var(--lime); font-size: 13px; font-weight: 800; font-variant-numeric: tabular-nums; margin-bottom: 10px; }
.letterbox {
  position: relative;
  min-height: 210px;
  border-radius: 12px;
  background:
    linear-gradient(#0c0e10, #0c0e10) top / 100% 18% no-repeat,
    linear-gradient(#0c0e10, #0c0e10) bottom / 100% 18% no-repeat,
    repeating-linear-gradient(90deg, rgba(226,240,122,.16) 0 2px, transparent 2px 72px),
    #1c2422;
  overflow: hidden;
}
.safe {
  position: absolute;
  inset: 22% 8% 24%;
  border: 1.5px dashed rgba(226, 240, 122, .85);
  border-radius: 8px;
}
.subbar {
  position: absolute;
  left: 10%;
  right: 10%;
  bottom: 22%;
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--lime);
  color: var(--ink);
  font-weight: 800;
  border-radius: 8px;
  font-size: 14px;
}
.frame-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; list-style: none; margin-top: 10px; }
.frame-stats li { background: rgba(247,243,234,.06); border: 1px solid rgba(247,243,234,.12); border-radius: 12px; padding: 8px 10px; }
.frame-stats b { display: block; font-variant-numeric: tabular-nums; font-size: 18px; color: var(--cream); }
.frame-stats span { color: rgba(247,243,234,.7); font-size: 12px; }
.split { grid-template-columns: 1.25fr .75fr; align-items: stretch; }
.pane { padding: 24px; }
.pane-main { min-height: 420px; position: relative; }
.pane-main::after {
  content: "";
  position: absolute;
  left: 24px;
  right: 24px;
  bottom: 18px;
  height: 8px;
  border-top: 2px solid var(--green);
  border-bottom: 2px solid var(--lime);
}
.pane h2, .pane h3 { margin-bottom: 8px; }
.pane p, .device p, .term p, .article-row p, .article-feature p { color: var(--muted); }
.tag { border: 1px solid var(--line); background: var(--paper); color: var(--plum); }
.tag-green { color: var(--green); }
.tag-orange { color: var(--orange); border-color: #f0c2b6; background: #fff4ef; }
.point-list { list-style: none; display: grid; gap: 8px; margin: 14px 0 28px; }
.point-list li {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}
.point-list b { font-variant-numeric: tabular-nums; color: var(--plum); }
.meter-row { margin: 0 0 12px; }
.meter-row header { display: flex; justify-content: space-between; font-size: 14px; margin-bottom: 4px; }
.meter-row header span { font-variant-numeric: tabular-nums; color: var(--muted); }
.meter { height: 8px; background: #efe8dc; border-radius: 999px; overflow: hidden; }
.meter i { display: block; height: 100%; background: var(--green); border-radius: inherit; }
.meter i.hot { background: var(--orange); }
.badges { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.badge { background: rgba(47,107,79,.1); color: var(--green); border: 1px solid rgba(47,107,79,.2); }
.term-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.term { padding: 16px 18px; }
.term b { display: block; color: var(--plum); margin-bottom: 4px; }
.device-grid { grid-template-columns: .9fr 1.15fr .95fr; align-items: start; }
.device { padding: 20px; }
.device-tall { min-height: 280px; }
.device-mid { min-height: 230px; margin-top: 36px; }
.device-short { min-height: 250px; margin-top: 14px; }
.device .num { font-variant-numeric: tabular-nums; color: var(--plum); font-weight: 800; font-size: 13px; }
.qa-list { display: grid; gap: 10px; }
.qa-item { display: grid; grid-template-columns: 54px 1fr; gap: 8px 14px; padding: 16px 18px; }
.qa-item .no { font-variant-numeric: tabular-nums; font-weight: 800; color: var(--plum); }
.qa-item p { margin: 4px 0 0; color: var(--muted); }
.article-list { display: grid; gap: 10px; }
.article-feature, .article-row {
  text-decoration: none;
  color: inherit;
  padding: 18px 20px;
  transition: transform .18s ease, box-shadow .18s ease;
}
.article-feature { display: grid; grid-template-columns: 92px 1fr auto; gap: 16px; align-items: center; background: #241820; color: var(--cream); border-color: #3a2a32; }
.article-feature p, .article-row p { margin: 4px 0 0; }
.article-feature p { color: rgba(247,243,234,.75); }
.article-row { display: grid; grid-template-columns: 92px 1fr auto; gap: 16px; align-items: center; }
.article-feature:hover, .article-row:hover { transform: translateY(-1px); box-shadow: 0 16px 30px rgba(30,26,23,.12); color: inherit; text-decoration: none; }
.idx { font-variant-numeric: tabular-nums; font-weight: 800; color: var(--lime); }
.article-row .idx { color: var(--plum); }
.when { font-variant-numeric: tabular-nums; font-size: 13px; color: var(--muted); }
.article-feature .when { color: var(--lime); }
.form-wrap { display: grid; grid-template-columns: .8fr 1.2fr; gap: 22px; align-items: start; }
.form-card { padding: 22px; }
.form-grid { grid-template-columns: 1fr 1fr; }
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; }
.field.full { grid-column: 1 / -1; }
.field span { font-size: 14px; font-weight: 700; }
input, select, textarea {
  width: 100%;
  min-height: 46px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
  padding: 10px 12px;
  outline: none;
}
textarea { min-height: 110px; resize: vertical; }
input:focus, select:focus, textarea:focus { border-color: var(--green); }
.is-error { border-color: var(--plum) !important; background: #fbf6f8; }
.form-ok { margin: 10px 0 0; color: var(--green); font-weight: 700; }
.timeline { list-style: none; margin: 0; padding: 0 0 0 8px; border-left: 2px solid rgba(226,240,122,.75); display: grid; gap: 12px; }
.timeline li { margin-left: 18px; padding: 14px 16px; background: #1c2224; border-color: #32383b; box-shadow: none; color: var(--cream); }
.timeline li::before { content: none; }
.timeline time { display: block; color: var(--lime); font-variant-numeric: tabular-nums; font-size: 13px; font-weight: 800; }
.timeline p { margin: 4px 0 0; color: rgba(247,243,234,.78); }
.site-footer { background: var(--board); color: var(--cream); padding: 36px 0 22px; }
.foot { display: flex; justify-content: space-between; gap: 24px; align-items: flex-start; }
.site-footer .logo-text strong { color: var(--cream); font-size: 16px; white-space: normal; }
.foot p { color: rgba(247,243,234,.78); margin: 8px 0 0; max-width: 46ch; }
.foot-links { display: flex; flex-wrap: wrap; gap: 10px 16px; }
.foot-links a { color: var(--cream); text-decoration: none; }
.foot-links a:hover { color: var(--lime); text-decoration: underline; }
.copy { color: rgba(247,243,234,.62); font-size: 13px; margin: 18px 0 0; }
@media (max-width: 1100px) {
  .nav-toggle { display: inline-flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: #1A4540;
    padding: 10px 16px 16px;
    gap: 4px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { width: 100%; }
  .chap-grid, .split, .form-wrap { grid-template-columns: 1fr; }
  .device-grid { grid-template-columns: 1fr 1fr; }
  .device-mid, .device-short, .device-tall { margin-top: 0; min-height: 0; }
}
@media (max-width: 768px) {
  section { padding: 40px 0; }
  h1 { font-size: 34px; }
  h2 { font-size: 26px; }
  .term-grid, .device-grid, .form-grid, .article-feature, .article-row { grid-template-columns: 1fr; }
  .foot { flex-direction: column; }
  .qa-item { grid-template-columns: 42px 1fr; }
  .pane-main { min-height: 0; }
  .pane-main::after { position: static; display: block; margin-top: 16px; }
}
@media (max-width: 480px) {
  .container { width: min(var(--max), calc(100% - 20px)); }
  .logo-text strong { white-space: normal; font-size: 13px; }
  .logo-text small { display: none; }
  .nav-cta { display: none; }
  h1 { font-size: 30px; }
  .frame-stats { grid-template-columns: 1fr; }
  .point-list li { grid-template-columns: 1fr; gap: 0; }
}