/* roulang page: index */
:root {
  --paper: #F4F7F8;
  --alt: #E7EEF2;
  --card: #FFFFFF;
  --ink: #1B2830;
  --muted: #5D6C76;
  --primary: #4E7E9C;
  --primary-deep: #2E5C74;
  --line: #D4E0E7;
  --shadow: 0 12px 32px rgba(46, 92, 116, .08);
  --shadow-hover: 0 18px 36px rgba(46, 92, 116, .16);
  --radius: 12px;
  --radius-btn: 8px;
  --container: 1160px;
  --swatch-a: #4E7E9C;
  --swatch-b: #2E5C74;
  --swatch-c: #8AAABB;
  --swatch-d: #C5D5DE;
  --swatch-e: #6E97B0;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
}
img { max-width: 100%; display: block; border: 0; }
a { color: var(--primary-deep); text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
h1, h2, h3, p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
.container { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; }
.masthead {
  background: #fff;
  border-bottom: 1px solid var(--line);
  padding: 18px 0 0;
}
.kicker {
  margin: 0;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: .28em;
}
.brand {
  display: block;
  text-align: center;
  color: var(--ink);
  font-family: "Songti SC", "STSong", "SimSun", "Noto Serif SC", serif;
  font-size: 60px;
  line-height: 1.15;
  letter-spacing: .12em;
  padding: 10px 0 16px;
}
.brand:hover, .brand:focus-visible { color: var(--primary-deep); }
.channel-nav {
  display: flex;
  gap: 6px 28px;
  overflow-x: auto;
  border-top: 1px solid var(--line);
  padding: 0;
  scrollbar-width: thin;
}
.channel-nav a {
  flex: 0 0 auto;
  color: var(--ink);
  padding: 14px 0 12px;
  border-bottom: 2px solid transparent;
  font-size: 15px;
}
.channel-nav a:hover,
.channel-nav a:focus-visible,
.channel-nav a.is-current {
  color: var(--primary-deep);
  border-bottom-color: var(--primary);
  outline: none;
}
.section { padding: 96px 0; background: var(--paper); }
.section-alt { background: var(--alt); }
.section-head { max-width: 760px; margin-bottom: 32px; }
.section-title {
  font-family: "Songti SC", "STSong", "SimSun", serif;
  font-size: 32px;
  line-height: 1.35;
  font-weight: 600;
  margin-bottom: 12px;
}
.section-desc { color: var(--muted); font-size: 16px; }
.hero { padding: 72px 0 88px; background: #fff; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  gap: 48px;
  align-items: center;
}
.hero-kicker {
  color: var(--primary);
  letter-spacing: .18em;
  font-size: 13px;
  margin-bottom: 14px;
}
.hero-title {
  font-family: "Songti SC", "STSong", "SimSun", serif;
  font-size: 52px;
  line-height: 1.2;
  font-weight: 600;
  margin-bottom: 16px;
}
.hero-sub { font-size: 18px; margin-bottom: 16px; }
.hero-lead { color: var(--muted); margin-bottom: 22px; }
.hero-meta { display: flex; gap: 18px; margin-bottom: 26px; }
.hero-meta span {
  min-width: 108px;
  padding: 10px 12px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-btn);
}
.hero-meta strong { display: block; font-size: 22px; color: var(--primary-deep); line-height: 1.2; }
.hero-meta em { font-style: normal; color: var(--muted); font-size: 13px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--primary);
  background: var(--primary);
  color: #fff;
  cursor: pointer;
  transition: background .2s ease, border-color .2s ease, transform .15s ease, box-shadow .2s ease;
}
.btn:hover { background: var(--primary-deep); border-color: var(--primary-deep); color: #fff; }
.btn:active { transform: scale(.98); }
.btn:focus-visible { outline: 2px solid var(--primary-deep); outline-offset: 3px; }
.hero-stage { position: relative; min-height: 460px; }
.sheet {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--card);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.sheet figcaption { padding: 10px 12px 12px; font-size: 14px; }
.swatch { width: 100%; }
.ratio-34 { aspect-ratio: 3 / 4; }
.ratio-169 { aspect-ratio: 16 / 9; }
.swatch-a { background: var(--swatch-a); }
.swatch-b { background: var(--swatch-b); }
.swatch-c { background: var(--swatch-c); }
.swatch-d { background: var(--swatch-d); }
.swatch-e { background: var(--swatch-e); }
.cover-back { position: absolute; right: 0; top: 12px; width: 58%; }
.cover-mid { position: absolute; left: 0; top: 86px; width: 48%; }
.cover-front { position: absolute; right: 12%; bottom: 0; width: 44%; }
.matrix {
  display: grid;
  grid-template-columns: 1.35fr 1fr .72fr;
  grid-template-rows: auto auto;
  gap: 18px;
}
.tile {
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  color: var(--ink);
  overflow: hidden;
  transition: transform .2s ease, box-shadow .2s ease;
}
.tile:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); color: var(--ink); }
.tile:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
.tile-rihan { grid-column: 1; grid-row: 1 / span 2; }
.tile-guochan { grid-column: 2 / span 2; grid-row: 1; }
.tile-sanji { grid-column: 2; grid-row: 2; }
.tile-oumei { grid-column: 3; grid-row: 2; }
.tile-body { padding: 18px 18px 20px; }
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--primary-deep);
  background: var(--paper);
  font-size: 12px;
  letter-spacing: .04em;
}
.tile h3 { font-size: 22px; margin: 10px 0 8px; line-height: 1.4; }
.tile p { color: var(--muted); font-size: 15px; }
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.stat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px 18px;
  border-top: 3px solid var(--primary);
}
.stat b { display: block; font-size: 40px; line-height: 1.1; color: var(--primary-deep); font-family: "Songti SC", "SimSun", serif; }
.stat span { display: block; margin-top: 6px; color: var(--muted); font-size: 14px; }
.flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  position: relative;
}
.flow::before {
  content: "";
  position: absolute;
  left: 6%;
  right: 6%;
  top: 21px;
  height: 1px;
  background: var(--primary);
}
.flow-step {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 48px 16px 18px;
  box-shadow: var(--shadow);
}
.flow-step i {
  position: absolute;
  top: 8px;
  left: 16px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--primary);
  color: var(--primary-deep);
  font-style: normal;
  display: grid;
  place-items: center;
  font-size: 13px;
}
.flow-step h3 { font-size: 18px; margin-bottom: 8px; }
.flow-step p { color: var(--muted); font-size: 14px; }
.masonry { columns: 3; column-gap: 16px; }
.shot {
  break-inside: avoid;
  margin-bottom: 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  color: var(--ink);
  display: block;
  transition: transform .2s ease, box-shadow .2s ease;
}
.shot:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); color: var(--ink); }
.shot:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
.shot h3 { font-size: 16px; padding: 12px 12px 4px; }
.shot p { color: var(--muted); font-size: 13px; padding: 0 12px 14px; }
.shot:nth-child(2) .swatch, .shot:nth-child(5) .swatch { aspect-ratio: 3 / 5; }
.split {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 22px;
  align-items: stretch;
}
.list-rows { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.list-rows li { border-bottom: 1px solid var(--line); }
.list-rows li:last-child { border-bottom: 0; }
.list-rows a, .list-rows .row {
  display: grid;
  grid-template-columns: 72px 1fr auto;
  gap: 12px;
  padding: 16px 18px;
  color: var(--ink);
  align-items: center;
}
.list-rows a:hover { background: var(--paper); }
.list-rows a:focus-visible { outline: 2px solid var(--primary); outline-offset: -2px; }
.list-rows small { color: var(--primary-deep); }
.list-rows em { font-style: normal; color: var(--muted); font-size: 13px; }
.feature-cover { display: flex; flex-direction: column; }
.feature-cover .swatch { flex: 1; min-height: 240px; }
.hscroll {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 6px;
}
.longcard {
  flex: 0 0 340px;
  scroll-snap-align: start;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
}
.longcard .ratio-169 { border-radius: 8px; margin-bottom: 12px; }
.longcard h3 { font-size: 20px; margin-bottom: 8px; }
.longcard p { color: var(--muted); font-size: 14px; }
.compare { display: flex; flex-direction: column; gap: 14px; }
.band {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.band .label {
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  font-size: 18px;
}
.band .copy { padding: 18px 18px 18px 0; }
.band h3 { font-size: 20px; margin-bottom: 6px; }
.band p { color: var(--muted); }
.scene-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 16px; }
.scene {
  display: block;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  color: var(--ink);
  transition: transform .2s ease, box-shadow .2s ease;
}
.scene:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); color: var(--ink); }
.scene:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
.scene:first-child { grid-row: span 2; }
.scene h3 { font-size: 20px; margin: 8px 0; }
.scene p { color: var(--muted); font-size: 15px; }
.news-list { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.news-item {
  display: grid;
  grid-template-columns: 110px 72px 1fr;
  gap: 14px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
}
.news-item:hover { background: var(--paper); }
.news-item time, .news-item .col { color: var(--primary-deep); font-size: 14px; }
.news-item h3 { font-size: 18px; margin-bottom: 4px; }
.news-item p { color: var(--muted); font-size: 14px; }
.more-wrap { padding: 14px 20px 16px; text-align: right; }
.more-link {
  color: var(--primary-deep);
  border-bottom: 1px solid var(--primary);
  padding-bottom: 2px;
}
.more-link:hover { color: var(--primary); }
.more-link:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
.digest { margin-top: 18px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.digest article {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
}
.digest h3 { font-size: 17px; margin-bottom: 6px; }
.digest p { color: var(--muted); font-size: 14px; }
.entry-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.entry-card {
  display: grid;
  grid-template-columns: 120px 1fr;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  color: var(--ink);
  min-height: 180px;
  transition: transform .2s ease, box-shadow .2s ease;
}
.entry-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); color: var(--ink); }
.entry-card:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
.entry-card div { padding: 20px 20px 20px 0; }
.entry-card h3 { font-size: 22px; margin: 8px 0; }
.entry-card p { color: var(--muted); font-size: 15px; }
.partner-list { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); }
.partner-list li {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 16px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
}
.partner-list li:last-child { border-bottom: 0; }
.partner-list strong { font-weight: 600; }
.partner-list span { color: var(--muted); }
.faq details {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 18px;
  margin-bottom: 10px;
}
.faq summary {
  cursor: pointer;
  padding: 14px 0;
  font-size: 17px;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
.faq details[open] summary { color: var(--primary-deep); }
.faq details p { color: var(--muted); padding-bottom: 14px; }
.badge-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.seal {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-align: center;
  padding: 18px 10px;
  box-shadow: var(--shadow);
}
.seal b { display: block; color: var(--primary-deep); font-size: 18px; margin-bottom: 4px; }
.seal span { color: var(--muted); font-size: 13px; }
.editor { max-width: 720px; }
.editor li {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.editor strong { color: var(--primary-deep); }
.contact-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 28px; align-items: start; }
.contact-copy h2 { font-family: "Songti SC", "SimSun", serif; font-size: 32px; line-height: 1.35; margin-bottom: 12px; }
.contact-copy p { color: var(--muted); margin-bottom: 16px; }
.text-link { border-bottom: 1px solid var(--primary); padding-bottom: 2px; }
.form {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  display: grid;
  gap: 12px;
}
.form label { display: grid; gap: 6px; font-size: 14px; color: var(--muted); }
.form input, .form select, .form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius-btn);
  background: #fff;
  padding: 12px 12px;
}
.form textarea { min-height: 110px; resize: vertical; }
.form input:focus, .form select:focus, .form textarea:focus {
  outline: 2px solid var(--primary);
  border-color: var(--primary);
}
.site-footer {
  background: #fff;
  border-top: 1px solid var(--line);
  padding: 36px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr .8fr;
  gap: 24px;
}
.footer-brand {
  font-family: "Songti SC", "SimSun", serif;
  font-size: 28px;
  color: var(--ink);
  display: inline-block;
  margin-bottom: 8px;
}
.site-footer p { color: var(--muted); font-size: 14px; }
.footer-links { display: flex; flex-direction: column; gap: 8px; }
.footer-links a { color: var(--ink); }
.footer-links a:hover { color: var(--primary-deep); }
.footer-links a:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
@media (max-width: 1200px) {
  .hero-title { font-size: 46px; }
  .brand { font-size: 52px; }
}
@media (max-width: 992px) {
  .hero-grid, .split, .contact-grid, .entry-grid, .footer-grid, .scene-grid { grid-template-columns: 1fr; }
  .hero-stage { min-height: 0; display: grid; gap: 12px; }
  .cover-back, .cover-mid, .cover-front { position: static; width: 100%; }
  .matrix { grid-template-columns: 1fr 1fr; }
  .tile-rihan, .tile-guochan, .tile-sanji, .tile-oumei { grid-column: auto; grid-row: auto; }
  .tile-rihan { grid-column: 1 / -1; }
  .stats, .flow, .badge-row { grid-template-columns: 1fr 1fr; }
  .flow::before { display: none; }
  .masonry { columns: 2; }
  .band { grid-template-columns: 120px 1fr; }
  .news-item { grid-template-columns: 96px 64px 1fr; }
  .scene:first-child { grid-row: auto; }
}
@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .hero { padding: 40px 0 48px; }
  .brand { font-size: 36px; letter-spacing: .06em; }
  .hero-title { font-size: 34px; }
  .section-title, .contact-copy h2 { font-size: 26px; }
  .container { width: min(var(--container), calc(100% - 28px)); }
  .digest, .entry-card, .partner-list li, .editor li, .band, .list-rows a, .list-rows .row { grid-template-columns: 1fr; }
  .entry-card .swatch { min-height: 120px; }
  .band .copy { padding: 0 16px 16px; }
  .news-item { grid-template-columns: 1fr; gap: 4px; }
  .footer-grid { grid-template-columns: 1fr; }
  .channel-nav { gap: 18px; }
}
@media (max-width: 480px) {
  .brand { font-size: 30px; }
  .hero-title { font-size: 30px; }
  .stats, .flow, .badge-row, .masonry { grid-template-columns: 1fr; columns: 1; }
  .hero-meta { flex-direction: column; }
  .longcard { flex-basis: 82vw; }
  .tile h3 { font-size: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .tile, .shot, .scene, .entry-card, .btn { transition: none; }
}

/* roulang page: category2 */
:root {
 --paper: #F4F7F8;
 --alt: #E7EEF2;
 --card: #FFFFFF;
 --ink: #1B2830;
 --muted: #5D6C76;
 --primary: #4E7E9C;
 --primary-deep: #2E5C74;
 --line: #D4E0E7;
 --shadow: 0 12px 32px rgba(46, 92, 116, .08);
 --shadow-hover: 0 18px 36px rgba(46, 92, 116, .16);
 --radius: 12px;
 --radius-btn: 8px;
 --container: 1160px;
 --swatch-a: #4E7E9C;
 --swatch-b: #2E5C74;
 --swatch-c: #8AAABB;
 --swatch-d: #C5D5DE;
 --swatch-e: #6E97B0;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
 margin: 0;
 background: var(--paper);
 color: var(--ink);
 font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
 font-size: 16px;
 line-height: 1.75;
}
h1, h2, h3, p, ul, ol, dl, dd, figure { margin: 0; }
ul { padding: 0; list-style: none; }
img { max-width: 100%; display: block; border: 0; }
a { color: var(--primary-deep); text-decoration: none; }
a:visited { color: var(--primary-deep); }
button, input, select, textarea { font: inherit; color: inherit; }
.container { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; }
.masthead {
 background: #fff;
 border-bottom: 1px solid var(--line);
 padding-top: 18px;
}
.kicker {
 text-align: center;
 color: var(--muted);
 font-size: 12px;
 letter-spacing: .28em;
 margin: 0;
}
.brand {
 display: block;
 text-align: center;
 color: var(--ink);
 font-family: "Songti SC", "STSong", "SimSun", "Noto Serif SC", serif;
 font-size: 60px;
 line-height: 1.15;
 letter-spacing: .12em;
 padding: 10px 0 16px;
}
.brand:hover, .brand:focus-visible { color: var(--primary-deep); }
.channel-nav {
 display: flex;
 gap: 6px 28px;
 overflow-x: auto;
 border-top: 1px solid var(--line);
 padding: 0;
 scrollbar-width: thin;
}
.channel-nav a {
 flex: 0 0 auto;
 color: var(--ink);
 padding: 14px 0 12px;
 border-bottom: 2px solid transparent;
 font-size: 15px;
}
.channel-nav a:hover,
.channel-nav a:focus-visible,
.channel-nav a.is-current {
 color: var(--primary-deep);
 border-bottom-color: var(--primary);
 outline: none;
}
.channel-nav a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.section { padding: 96px 0; background: var(--paper); }
.section-alt { background: var(--alt); }
.section-head { max-width: 760px; margin-bottom: 28px; }
.section-title {
 font-family: "Songti SC", "STSong", "SimSun", "Noto Serif SC", serif;
 font-size: 32px;
 line-height: 1.35;
 font-weight: 600;
 margin-bottom: 10px;
}
.section-desc { color: var(--muted); font-size: 16px; }
.btn {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 min-height: 46px;
 padding: 0 20px;
 border-radius: var(--radius-btn);
 border: 1px solid var(--primary);
 background: var(--primary);
 color: #fff;
 cursor: pointer;
 transition: background .2s ease, border-color .2s ease, transform .15s ease, box-shadow .2s ease;
}
.btn:visited { color: #fff; }
.btn:hover { background: var(--primary-deep); border-color: var(--primary-deep); color: #fff; }
.btn:active { transform: scale(.98); }
.btn:focus-visible { outline: 2px solid var(--primary-deep); outline-offset: 3px; }
.badge {
 display: inline-block;
 padding: 2px 8px;
 border-radius: 999px;
 border: 1px solid var(--line);
 color: var(--primary-deep);
 background: var(--paper);
 font-size: 12px;
 letter-spacing: .04em;
}
.swatch-a { background: var(--swatch-a); }
.swatch-b { background: var(--swatch-b); }
.swatch-c { background: var(--swatch-c); }
.swatch-d { background: var(--swatch-d); }
.swatch-e { background: var(--swatch-e); }
.ratio-34 { aspect-ratio: 3 / 4; }
.ratio-169 { aspect-ratio: 16 / 9; }
.cat-hero { padding: 88px 0 72px; background: #fff; border-bottom: 1px solid var(--line); }
.narrow { max-width: 720px; margin: 0 auto; text-align: center; }
.cat-kicker {
 color: var(--primary);
 letter-spacing: .18em;
 font-size: 13px;
 margin-bottom: 14px;
}
.cat-hero h1 {
 font-family: "Songti SC", "STSong", "SimSun", "Noto Serif SC", serif;
 font-size: 46px;
 line-height: 1.28;
 font-weight: 600;
 margin-bottom: 14px;
}
.cat-sub { font-size: 18px; margin-bottom: 12px; }
.cat-lead { color: var(--muted); }
.batch-line {
 display: flex;
 justify-content: center;
 gap: 14px;
 margin-top: 26px;
 flex-wrap: wrap;
}
.batch-line li {
 min-width: 120px;
 padding: 12px 14px;
 background: var(--paper);
 border: 1px solid var(--line);
 border-radius: var(--radius-btn);
}
.batch-line strong {
 display: block;
 font-size: 22px;
 color: var(--primary-deep);
 line-height: 1.2;
}
.batch-line span { color: var(--muted); font-size: 13px; }
.stack-block { margin-bottom: 28px; }
.stack-block:last-child { margin-bottom: 0; }
.stack-head {
 display: flex;
 justify-content: space-between;
 gap: 16px;
 align-items: flex-end;
 margin-bottom: 14px;
}
.stack-head p { color: var(--muted); font-size: 14px; }
.guo-list, .san-list, .ou-list {
 background: var(--card);
 border: 1px solid var(--line);
 border-radius: var(--radius);
 box-shadow: var(--shadow);
}
.guo-row, .san-row {
 display: grid;
 gap: 16px;
 align-items: center;
 padding: 16px 18px;
 border-bottom: 1px solid var(--line);
 color: var(--ink);
}
.guo-list .guo-row:last-child,
.san-list .san-row:last-child { border-bottom: 0; }
.guo-row { grid-template-columns: 72px 1fr auto; }
.san-row { grid-template-columns: 92px 1fr auto; }
.guo-row:hover, .san-row:hover { background: var(--paper); }
a.guo-row:focus-visible, a.san-row:focus-visible, a.ou-card:focus-visible {
 outline: 2px solid var(--primary);
 outline-offset: -2px;
}
.thumb {
 width: 72px;
 border-radius: 8px;
}
.row-title { font-size: 18px; margin-bottom: 4px; }
.row-note { color: var(--muted); font-size: 14px; }
.row-meta { color: var(--primary-deep); font-size: 13px; font-style: normal; white-space: nowrap; }
.san-index {
 font-family: "Songti SC", "STSong", "SimSun", serif;
 font-size: 28px;
 color: var(--primary);
 line-height: 1;
}
.ou-list {
 display: grid;
 grid-template-columns: 1fr 1fr;
 gap: 16px;
 background: transparent;
 border: 0;
 box-shadow: none;
}
.ou-card {
 display: block;
 background: var(--card);
 border: 1px solid var(--line);
 border-radius: var(--radius);
 box-shadow: var(--shadow);
 overflow: hidden;
 color: var(--ink);
 transition: transform .2s ease, box-shadow .2s ease;
}
.ou-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); color: var(--ink); }
.ou-card .ratio-169 { border-radius: 0; }
.ou-card div { padding: 16px 16px 18px; }
.ou-card h3 { font-size: 18px; margin: 8px 0; }
.ou-card p { color: var(--muted); font-size: 14px; }
.compare {
 background: var(--card);
 border: 1px solid var(--line);
 border-radius: var(--radius);
 box-shadow: var(--shadow);
}
.compare-line {
 display: grid;
 grid-template-columns: 88px 1fr;
 gap: 18px;
 padding: 22px 24px;
 border-bottom: 1px solid var(--line);
}
.compare-line:last-child { border-bottom: 0; }
.compare-line strong {
 font-family: "Songti SC", "STSong", "SimSun", serif;
 font-size: 20px;
 color: var(--primary-deep);
}
.compare-line p { color: var(--ink); }
.duo {
 display: grid;
 grid-template-columns: 1.25fr .75fr;
 gap: 18px;
}
.duo-card {
 background: var(--card);
 border: 1px solid var(--line);
 border-radius: var(--radius);
 box-shadow: var(--shadow);
 overflow: hidden;
 color: var(--ink);
 transition: transform .2s ease, box-shadow .2s ease;
}
.duo-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); color: var(--ink); }
.duo-card:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
.duo-copy { padding: 20px 22px 22px; }
.duo-copy h3 { font-size: 22px; margin: 8px 0; }
.duo-copy p { color: var(--muted); }
.news-list {
 background: var(--card);
 border: 1px solid var(--line);
 border-radius: var(--radius);
 box-shadow: var(--shadow);
}
.news-item {
 display: grid;
 grid-template-columns: 110px 72px 1fr;
 gap: 14px;
 padding: 18px 20px;
 border-bottom: 1px solid var(--line);
 color: var(--ink);
}
.news-item:last-child { border-bottom: 0; }
.news-item:hover { background: var(--paper); }
.news-item:focus-visible { outline: 2px solid var(--primary); outline-offset: -2px; }
.news-item time, .news-item .col { color: var(--primary-deep); font-size: 14px; }
.news-item h3 { font-size: 18px; margin-bottom: 4px; }
.news-item p { color: var(--muted); font-size: 14px; }
.qa-list { display: grid; gap: 12px; }
.qa {
 background: var(--card);
 border: 1px solid var(--line);
 border-radius: var(--radius);
 box-shadow: var(--shadow);
 padding: 18px 20px;
}
.qa h3 { font-size: 18px; margin-bottom: 6px; }
.qa p { color: var(--muted); }
.more-band { padding: 28px 0; background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.more-row {
 display: flex;
 justify-content: space-between;
 align-items: center;
 gap: 16px;
}
.more-row p {
 font-family: "Songti SC", "STSong", "SimSun", serif;
 font-size: 22px;
}
.contact-slim { padding: 52px 0; }
.contact-row {
 display: grid;
 grid-template-columns: 1.4fr auto;
 gap: 24px;
 align-items: center;
 background: var(--card);
 border: 1px solid var(--line);
 border-radius: var(--radius);
 box-shadow: var(--shadow);
 padding: 28px 32px;
}
.contact-row h2 {
 font-family: "Songti SC", "STSong", "SimSun", serif;
 font-size: 28px;
 line-height: 1.35;
 margin-bottom: 8px;
}
.contact-row p { color: var(--muted); }
.site-footer {
 background: #fff;
 border-top: 1px solid var(--line);
 padding: 48px 0 36px;
 color: var(--muted);
}
.footer-grid {
 display: grid;
 grid-template-columns: 1.4fr .8fr .8fr;
 gap: 24px;
 align-items: start;
}
.footer-brand {
 display: inline-block;
 font-family: "Songti SC", "STSong", "SimSun", "Noto Serif SC", serif;
 font-size: 28px;
 letter-spacing: .08em;
 color: var(--ink);
 margin-bottom: 8px;
}
.footer-brand:hover, .footer-brand:focus-visible { color: var(--primary-deep); }
.footer-links { display: flex; flex-direction: column; gap: 8px; }
.footer-links a:hover, .footer-links a:focus-visible { color: var(--primary); }
.site-footer p { margin: 0; }
@media (max-width: 1200px) {
 .cat-hero h1 { font-size: 42px; }
 .brand { font-size: 52px; }
}
@media (max-width: 992px) {
 .brand { font-size: 44px; letter-spacing: .08em; }
 .section { padding: 72px 0; }
 .duo, .ou-list, .footer-grid, .contact-row { grid-template-columns: 1fr; }
 .news-item { grid-template-columns: 92px 64px 1fr; }
 .cat-hero h1 { font-size: 38px; }
}
@media (max-width: 768px) {
 .container { width: min(var(--container), calc(100% - 28px)); }
 .brand { font-size: 34px; letter-spacing: .06em; padding: 8px 0 12px; }
 .section { padding: 56px 0; }
 .cat-hero { padding: 56px 0 48px; }
 .cat-hero h1 { font-size: 32px; }
 .section-title, .contact-row h2 { font-size: 26px; }
 .guo-row, .san-row { grid-template-columns: 64px 1fr; }
 .row-meta { grid-column: 2; white-space: normal; }
 .news-item { grid-template-columns: 1fr; gap: 4px; }
 .compare-line { grid-template-columns: 1fr; gap: 6px; }
 .more-row, .stack-head { flex-direction: column; align-items: flex-start; }
 .guo-list, .san-list, .ou-card, .duo-card, .news-list, .qa, .compare, .contact-row {
  box-shadow: 0 6px 16px rgba(46, 92, 116, .06);
 }
 .contact-slim { padding: 56px 0; }
 .contact-row { padding: 22px; }
}
@media (max-width: 480px) {
 .brand { font-size: 28px; letter-spacing: .04em; }
 .kicker { letter-spacing: .14em; }
 .channel-nav { gap: 0 18px; }
 .cat-hero h1 { font-size: 28px; }
 .batch-line li { min-width: 0; flex: 1 1 30%; }
 .ou-list { grid-template-columns: 1fr; }
}

/* roulang page: category1 */
:root {
  --paper: #F4F7F8;
  --alt: #E7EEF2;
  --card: #FFFFFF;
  --ink: #1B2830;
  --muted: #5D6C76;
  --primary: #4E7E9C;
  --primary-deep: #2E5C74;
  --line: #D4E0E7;
  --shadow: 0 12px 32px rgba(46, 92, 116, .08);
  --shadow-hover: 0 18px 36px rgba(46, 92, 116, .16);
  --radius: 12px;
  --radius-btn: 8px;
  --container: 1160px;
  --swatch-a: #4E7E9C;
  --swatch-b: #2E5C74;
  --swatch-c: #8AAABB;
  --swatch-d: #C5D5DE;
  --swatch-e: #6E97B0;
}
/* roulang page: category1 */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
}
img { max-width: 100%; display: block; border: 0; }
a { color: var(--primary-deep); text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
h1, h2, h3, p, ol, ul { margin: 0; padding: 0; }
ol, ul { list-style: none; }
.container { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; }
.masthead { background: #fff; border-bottom: 1px solid var(--line); }
.kicker {
  margin: 0;
  padding-top: 18px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: .22em;
}
.brand {
  display: block;
  text-align: center;
  color: var(--ink);
  font-family: "Songti SC", "STSong", "SimSun", "Noto Serif SC", serif;
  font-size: 60px;
  line-height: 1.15;
  letter-spacing: .12em;
  padding: 10px 0 16px;
}
.brand:hover, .brand:focus-visible { color: var(--primary-deep); }
.channel-nav {
  display: flex;
  gap: 6px 28px;
  overflow-x: auto;
  border-top: 1px solid var(--line);
  padding: 0;
  scrollbar-width: thin;
}
.channel-nav a {
  flex: 0 0 auto;
  color: var(--ink);
  padding: 14px 0 12px;
  border-bottom: 2px solid transparent;
  font-size: 15px;
}
.channel-nav a:hover,
.channel-nav a:focus-visible,
.channel-nav a.is-current {
  color: var(--primary-deep);
  border-bottom-color: var(--primary);
  outline: none;
}
.section { padding: 96px 0; background: var(--paper); }
.section-alt { background: var(--alt); }
.section-white { background: #fff; }
.section-head { max-width: 760px; margin-bottom: 28px; }
.section-title {
  font-family: "Songti SC", "STSong", "SimSun", "Noto Serif SC", serif;
  font-size: 32px;
  line-height: 1.35;
  font-weight: 600;
  margin-bottom: 10px;
}
.section-desc { color: var(--muted); font-size: 16px; }
.cat-hero {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 42px;
  align-items: start;
}
.cat-kicker {
  color: var(--primary);
  letter-spacing: .18em;
  font-size: 13px;
  margin-bottom: 14px;
}
.cat-title {
  font-family: "Songti SC", "STSong", "SimSun", "Noto Serif SC", serif;
  font-size: 46px;
  line-height: 1.22;
  font-weight: 600;
  margin-bottom: 14px;
}
.cat-sub { font-size: 18px; margin-bottom: 12px; }
.cat-lead { color: var(--muted); margin-bottom: 20px; }
.status-line { display: flex; flex-wrap: wrap; gap: 8px; }
.status-line span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  color: var(--primary-deep);
  font-size: 13px;
}
.toc {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 18px 8px;
}
.toc-label {
  color: var(--primary);
  font-size: 13px;
  letter-spacing: .14em;
  margin-bottom: 8px;
}
.toc li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 2px;
  border-top: 1px solid var(--line);
  font-size: 17px;
}
.toc em { font-style: normal; color: var(--muted); font-size: 14px; }
.toc-note {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  padding: 12px 2px 10px;
}
.list-layout {
  display: grid;
  grid-template-columns: 232px 1fr;
  gap: 28px;
  align-items: start;
}
.filter-box {
  position: sticky;
  top: 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
}
.filter-box h2 { font-size: 18px; margin-bottom: 12px; font-weight: 600; }
.filter-box p { color: var(--muted); font-size: 13px; margin-bottom: 12px; }
.filter-actions { display: grid; gap: 8px; }
.filter-btn {
  width: 100%;
  text-align: left;
  min-height: 42px;
  padding: 0 12px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  transition: background .2s ease, border-color .2s ease, color .2s ease, transform .15s ease;
}
.filter-btn:hover { border-color: var(--primary); color: var(--primary-deep); }
.filter-btn:active { transform: scale(.98); }
.filter-btn:focus-visible { outline: 2px solid var(--primary-deep); outline-offset: 2px; }
.filter-btn.is-on { background: var(--primary); border-color: var(--primary); color: #fff; }
.entry-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.entry {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform .2s ease, box-shadow .2s ease;
}
.entry:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.entry-body { padding: 14px 16px 16px; }
.entry-body h3 { font-size: 18px; line-height: 1.45; margin: 8px 0; }
.entry-body p { color: var(--muted); font-size: 14px; }
.entry-body time { display: inline-block; margin-top: 8px; color: var(--primary-deep); font-size: 13px; }
.ratio { width: 100%; overflow: hidden; }
.ratio-34 { aspect-ratio: 3 / 4; min-height: 210px; }
.ratio-169 { aspect-ratio: 16 / 9; min-height: 140px; }
.swatch-a { background: var(--swatch-a); }
.swatch-b { background: var(--swatch-b); }
.swatch-c { background: var(--swatch-c); }
.swatch-d { background: var(--swatch-d); }
.swatch-e { background: var(--swatch-e); }
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--primary-deep);
  background: var(--paper);
  font-size: 12px;
  letter-spacing: .04em;
}
.filter-empty {
  margin-top: 14px;
  color: var(--muted);
  background: var(--card);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 18px;
}
.badge-rail {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 6px;
  scrollbar-width: thin;
}
.badge-card {
  flex: 0 0 230px;
  scroll-snap-align: start;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px 16px 18px;
}
.badge-card strong { display: block; font-size: 18px; margin: 10px 0 6px; }
.badge-card span { color: var(--muted); font-size: 14px; }
.timeline { margin: 0; padding: 0; border-left: 1px solid var(--line); }
.timeline li {
  position: relative;
  padding: 0 0 26px 26px;
}
.timeline li::before {
  content: "";
  width: 11px;
  height: 11px;
  border: 2px solid var(--primary);
  background: #fff;
  border-radius: 50%;
  position: absolute;
  left: -7px;
  top: 7px;
}
.timeline time { display: block; color: var(--primary-deep); font-size: 14px; }
.timeline h3 { font-size: 18px; margin: 2px 0 4px; }
.timeline p { color: var(--muted); font-size: 15px; }
.review-list { display: grid; gap: 12px; }
.review {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--primary);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px 18px 16px 16px;
}
.review h3 { font-size: 17px; margin-bottom: 4px; }
.review p { color: var(--muted); }
.news-list {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.news-item {
  display: grid;
  grid-template-columns: 110px 72px 1fr;
  gap: 14px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
}
.news-item:last-child { border-bottom: 0; }
.news-item:hover { background: var(--paper); }
.news-item:focus-visible { outline: 2px solid var(--primary); outline-offset: -2px; }
.news-item time, .news-item .col { color: var(--primary-deep); font-size: 14px; }
.news-item h3 { font-size: 18px; margin-bottom: 4px; }
.news-item p { color: var(--muted); font-size: 14px; }
.article-stack { display: grid; gap: 14px; margin-top: 16px; }
.piece {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px 20px;
}
.piece-meta { display: flex; gap: 10px; align-items: center; margin-bottom: 8px; }
.piece-meta time { color: var(--muted); font-size: 13px; }
.piece h3 { font-size: 20px; margin-bottom: 8px; }
.piece p { color: var(--ink); }
.qa-list { display: grid; gap: 10px; }
.qa {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 0 18px;
}
.qa summary {
  list-style: none;
  cursor: pointer;
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 17px;
}
.qa summary::-webkit-details-marker { display: none; }
.qa summary::after { content: "+"; color: var(--primary); font-size: 22px; line-height: 1; }
.qa[open] summary::after { content: "–"; }
.qa summary:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
.qa p { color: var(--muted); padding-bottom: 16px; }
.backbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 20px;
}
.backbar p { font-size: 17px; }
.backbar .actions { display: flex; gap: 10px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--primary);
  background: var(--primary);
  color: #fff;
  cursor: pointer;
  transition: background .2s ease, border-color .2s ease, transform .15s ease, box-shadow .2s ease;
}
.btn:hover { background: var(--primary-deep); border-color: var(--primary-deep); color: #fff; }
.btn:active { transform: scale(.98); }
.btn:focus-visible { outline: 2px solid var(--primary-deep); outline-offset: 3px; }
.btn-ghost { background: #fff; color: var(--primary-deep); }
.btn-ghost:hover { background: var(--primary-deep); color: #fff; }
.site-footer {
  background: var(--alt);
  border-top: 1px solid var(--line);
  padding: 40px 0 48px;
  color: var(--muted);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr .8fr .8fr;
  gap: 24px;
  align-items: start;
}
.footer-brand {
  display: inline-block;
  margin-bottom: 8px;
  font-family: "Songti SC", "STSong", "SimSun", "Noto Serif SC", serif;
  font-size: 28px;
  color: var(--ink);
  letter-spacing: .08em;
}
.footer-brand:hover, .footer-brand:focus-visible { color: var(--primary-deep); }
.footer-links { display: grid; gap: 6px; }
.footer-links a:hover, .footer-links a:focus-visible { color: var(--primary); }
@media (max-width: 1200px) {
  .cat-title { font-size: 42px; }
}
@media (max-width: 992px) {
  .cat-hero, .list-layout, .footer-grid { grid-template-columns: 1fr; }
  .filter-box { position: static; }
  .entry-grid { grid-template-columns: 1fr 1fr; }
  .brand { font-size: 46px; }
}
@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .brand { font-size: 36px; letter-spacing: .08em; }
  .cat-title { font-size: 34px; }
  .section-title { font-size: 26px; }
  .entry-grid, .news-item { grid-template-columns: 1fr; }
  .news-item { gap: 4px; }
  .backbar { flex-direction: column; align-items: flex-start; }
  .entry:hover { transform: none; box-shadow: var(--shadow); }
}
@media (max-width: 480px) {
  .container { width: min(var(--container), calc(100% - 28px)); }
  .section { padding: 52px 0; }
  .brand { font-size: 30px; letter-spacing: .04em; padding: 8px 0 12px; }
  .kicker { letter-spacing: .12em; }
  .cat-title { font-size: 30px; }
  .channel-nav { gap: 6px 18px; }
  .filter-box, .toc, .piece, .backbar { padding: 14px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .entry, .btn, .filter-btn { transition: none; }
}