/* roulang page: index */
:root {
  --c-primary: #2C5F8A;
  --c-primary-deep: #234E72;
  --c-accent: #3E8E7E;
  --c-hot: #C46B4A;
  --c-bg: #F3F6F8;
  --c-white: #FFFFFF;
  --c-text: #1C2833;
  --c-muted: #5C6B7A;
  --c-line: #D5DEE6;
  --c-soft: #E7EEF5;
  --c-mint: #E5F3EF;
  --radius-card: 16px;
  --radius-btn: 10px;
  --shadow: 0 8px 24px rgba(22, 58, 95, 0.08);
  --shadow-hover: 0 14px 32px rgba(22, 58, 95, 0.16);
  --container: 1120px;
  --header-gap: 12px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--c-text);
  background: var(--c-bg);
  font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.75;
}
img { max-width: 100%; display: block; }
a { color: var(--c-primary); text-decoration: none; }
button, input, select, textarea { font-family: inherit; font-size: 16px; color: inherit; }
h1, h2, h3, p { margin: 0; }
h1 { font-size: 36px; line-height: 1.3; letter-spacing: 0; font-weight: 700; }
h2 { font-size: 26px; line-height: 1.35; font-weight: 700; }
h3 { font-size: 18px; line-height: 1.5; font-weight: 700; }
.container { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--c-white);
  border-bottom: 1px solid var(--c-line);
  box-shadow: 0 1px 0 rgba(22, 58, 95, 0.04);
}
.age-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 42px;
  background: var(--c-soft);
  color: var(--c-text);
  font-size: 13px;
}
.age-bar .container { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; padding: 6px 0; }
.age-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 24px;
  padding: 0 8px;
  border-radius: 999px;
  background: var(--c-primary);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.age-btn {
  margin-left: auto;
  border: 0;
  background: var(--c-white);
  color: var(--c-primary);
  border-radius: 999px;
  padding: 4px 12px;
  cursor: pointer;
  border: 1px solid var(--c-primary);
}
.age-btn[disabled] { cursor: default; color: var(--c-accent); border-color: var(--c-accent); }
.nav-top {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 72px;
  padding: 10px 0;
}
.logo {
  color: var(--c-primary);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.35;
  flex: 1 1 280px;
}
.logo:hover { color: var(--c-primary-deep); }
.search {
  flex: 1 1 240px;
  max-width: 360px;
  margin: 0;
}
.search input {
  width: 100%;
  height: 42px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  padding: 0 16px;
  background: var(--c-white);
}
.search input:focus {
  outline: 2px solid var(--c-primary);
  outline-offset: 1px;
  border-color: var(--c-primary);
}
.channel-wrap { border-top: 1px solid var(--c-line); }
.channel {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 48px;
  overflow-x: auto;
  scrollbar-width: thin;
}
.tab {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  height: 34px;
  padding: 0 14px;
  border-radius: 999px;
  color: var(--c-text);
  font-size: 14px;
  white-space: nowrap;
}
.tab:hover { background: var(--c-soft); color: var(--c-primary); }
.tab.active, .tab:active {
  background: var(--c-soft);
  color: var(--c-primary);
  font-weight: 700;
}
.section { padding: 72px 0; background: var(--c-white); }
.section:nth-child(even) { background: var(--c-bg); }
.section-head { max-width: 760px; margin-bottom: 28px; }
.section-head p, .lead { color: var(--c-text); margin-top: 12px; }
.kicker {
  display: inline-flex;
  align-items: center;
  height: 28px;
  padding: 0 12px;
  border-radius: 999px;
  background: var(--c-soft);
  color: var(--c-primary);
  font-size: 13px;
  font-weight: 700;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border-radius: var(--radius-btn);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .2s ease, transform .2s ease, box-shadow .2s ease, color .2s ease;
  font-weight: 700;
  white-space: nowrap;
}
.btn:focus-visible, .tab:focus-visible, .pill:focus-visible, .tag:focus-visible, summary:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 2px;
}
.btn-primary { background: var(--c-primary); color: #fff; }
.btn-primary:hover { background: var(--c-primary-deep); color: #fff; transform: translateY(-1px); }
.btn-primary:active { background: #1B415F; transform: translateY(0); }
.btn-ghost { background: var(--c-white); color: var(--c-primary); border-color: var(--c-primary); }
.btn-ghost:hover { background: var(--c-soft); color: var(--c-primary-deep); transform: translateY(-1px); }
.btn-ghost:active { transform: translateY(0); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 20px 0 28px; }
.badge-row, .pill-row, .tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
.pill, .tag {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 14px;
  border-radius: 999px;
  background: var(--c-white);
  color: var(--c-primary);
  border: 1px solid var(--c-line);
  font-size: 14px;
}
.pill:hover, .tag:hover { border-color: var(--c-primary); box-shadow: var(--shadow); color: var(--c-primary-deep); }
.metric-grid, .stack, .scene-list, .compare-list, .floor-grid, .guard-list, .qa-grid, .excerpt-grid, .faq-list, .form-grid {
  display: grid;
  gap: 16px;
}
.metric-grid { grid-template-columns: 1fr 1fr; }
.metric-card, .post-card, .floor-card, .excerpt-card, .main-floor, .form-card, .faq-item, .qa-item, .news-row, .guard-bar, .scene-row, .compare-band {
  background: var(--c-white);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
}
.metric-card, .post-card, .floor-card, .excerpt-card, .qa-item { padding: 18px 18px 16px; }
.metric-card:hover, .post-card:hover, .floor-card:hover, .excerpt-card:hover, .main-floor:hover, .news-row:hover, .scene-row:hover, .compare-band:hover, .guard-bar:hover {
  box-shadow: var(--shadow-hover);
}
.metric-card strong { display: block; font-size: 32px; line-height: 1.2; color: var(--c-primary); }
.metric-card span, .meta { color: var(--c-muted); font-size: 13px; }
.matrix { display: grid; gap: 20px; align-items: start; }
.main-floor { padding: 22px; }
.cover {
  position: relative;
  height: 92px;
  border-radius: 12px;
  background: var(--c-soft);
  overflow: hidden;
  margin-bottom: 16px;
}
.cover b { position: absolute; left: 0; top: 0; bottom: 0; width: 30%; background: var(--c-primary); }
.cover i { position: absolute; right: 16px; bottom: 14px; width: 42px; height: 42px; border-radius: 10px; background: var(--c-accent); }
.mini-post {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
  border-top: 1px solid var(--c-line);
  color: var(--c-text);
}
.mini-post:hover { color: var(--c-primary); }
.stack { grid-template-columns: 1fr; }
.post-card { display: block; color: var(--c-text); }
.post-card h3 { margin-bottom: 8px; }
.post-card p { color: var(--c-muted); font-size: 14px; line-height: 1.7; }
.post-card .more { display: inline-block; margin-top: 12px; color: var(--c-primary); font-weight: 700; }
.card-a { min-height: 168px; }
.card-b { min-height: 236px; }
.card-f { min-height: 132px; }
.scene-row, .compare-band, .guard-bar { padding: 18px 20px; display: grid; grid-template-columns: 132px 1fr; gap: 16px; align-items: center; color: var(--c-text); }
.scene-row:nth-child(2) { margin-left: 36px; }
.scene-row:nth-child(3) { margin-left: 72px; }
.scene-label, .band-label {
  font-weight: 700;
  color: var(--c-primary);
}
.compare-band { border-left: 6px solid var(--c-primary); }
.compare-band.band-b { border-left-color: var(--c-accent); }
.compare-band.band-f { border-left-color: #7FA3C4; }
.floor-grid { grid-template-columns: 1fr; }
.floor-no { font-size: 13px; color: var(--c-accent); font-weight: 700; }
.timeline { display: flex; gap: 14px; overflow-x: auto; padding-bottom: 6px; }
.milestone {
  position: relative;
  flex: 1 0 200px;
  background: var(--c-white);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
  padding: 28px 16px 16px;
}
.milestone::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 14px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-primary);
  box-shadow: 0 0 0 4px var(--c-soft);
}
.news-list { display: grid; gap: 12px; }
.news-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto auto;
  gap: 12px;
  align-items: center;
  padding: 14px 16px;
  color: var(--c-text);
}
.news-row h3 { font-size: 16px; font-weight: 700; }
.badge {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 8px;
  border-radius: 999px;
  background: var(--c-soft);
  color: var(--c-primary);
  font-size: 12px;
  font-weight: 700;
}
.badge-b { background: var(--c-mint); color: #24685A; }
.badge-f { background: #EEF3F7; color: #3D5E78; }
.badge-hot { background: var(--c-hot); color: #fff; }
.more-wrap { margin-top: 18px; }
.guard-bar { grid-template-columns: 92px 1fr; }
.guard-mark {
  width: 72px;
  height: 48px;
  border-radius: 12px;
  background: var(--c-primary);
}
.guard-mark.m2 { background: var(--c-accent); }
.guard-mark.m3 { background: #7FA3C4; }
.guard-mark.m4 { background: #4E7596; }
.notice-list { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.notice-list li {
  background: var(--c-white);
  border-radius: 12px;
  padding: 12px 16px 12px 18px;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--c-accent);
}
.qa-grid { grid-template-columns: 1fr; }
.qa-item h3 { margin-bottom: 8px; }
.excerpt-grid { grid-template-columns: 1fr; }
.faq-item { padding: 0; overflow: hidden; }
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 48px 18px 18px;
  font-weight: 700;
  position: relative;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 16px;
  color: var(--c-primary);
  font-size: 22px;
}
.faq-item[open] summary::after { content: "–"; }
.faq-a { padding: 0 18px 18px; color: var(--c-muted); }
.form-card { padding: 22px; }
.form-grid { grid-template-columns: 1fr; }
label { display: block; font-weight: 700; margin-bottom: 6px; }
.field, select.field, textarea.field {
  width: 100%;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-btn);
  background: #fff;
  padding: 12px 14px;
}
textarea.field { min-height: 110px; resize: vertical; }
.field:focus { outline: 2px solid var(--c-primary); border-color: var(--c-primary); }
.form-status { min-height: 28px; margin-top: 12px; font-size: 14px; color: var(--c-accent); font-weight: 700; }
.site-footer { background: var(--c-white); border-top: 1px solid var(--c-line); padding: 36px 0 28px; }
.footer-grid { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer-links { display: flex; flex-wrap: wrap; gap: 14px; }
.footer-links a { color: var(--c-muted); }
.footer-links a:hover { color: var(--c-primary); }
.copy { color: var(--c-muted); font-size: 13px; margin-top: 18px; }
@media (min-width: 640px) {
  .metric-grid { grid-template-columns: repeat(3, 1fr); }
  .floor-grid, .qa-grid, .form-grid { grid-template-columns: 1fr 1fr; }
  .excerpt-grid { grid-template-columns: 1fr 1fr; }
  .form-grid .full { grid-column: 1 / -1; }
}
@media (min-width: 1024px) {
  .metric-grid { grid-template-columns: repeat(5, 1fr); }
  .matrix { grid-template-columns: 1.45fr .82fr; }
  .excerpt-grid, .qa-grid { grid-template-columns: repeat(3, 1fr); }
  .floor-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 1023px) {
  .section { padding: 40px 0; }
  h1 { font-size: 32px; }
  h2 { font-size: 24px; }
  .scene-row, .scene-row:nth-child(2), .scene-row:nth-child(3) { margin-left: 0; }
}
@media (max-width: 639px) {
  .container { width: min(var(--container), calc(100% - 28px)); }
  .nav-top { align-items: stretch; }
  .logo { flex-basis: 100%; font-size: 16px; }
  .search { max-width: none; }
  .metric-card:last-child { grid-column: 1 / -1; }
  .scene-row, .compare-band, .guard-bar, .news-row { grid-template-columns: 1fr; }
  .news-row { gap: 6px; }
  .age-btn { margin-left: 0; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn, .metric-card, .post-card, .news-row { transition: none; }
}

/* roulang page: category1 */
:root {
 --c-primary: #2C5F8A;
 --c-primary-deep: #234E72;
 --c-accent: #3E8E7E;
 --c-hot: #C46B4A;
 --c-bg: #F3F6F8;
 --c-white: #FFFFFF;
 --c-text: #1C2833;
 --c-muted: #5C6B7A;
 --c-line: #D5DEE6;
 --c-soft: #E7EEF5;
 --c-mint: #E5F3EF;
 --radius-card: 16px;
 --radius-btn: 10px;
 --shadow: 0 8px 24px rgba(22, 58, 95, 0.08);
 --shadow-hover: 0 14px 32px rgba(22, 58, 95, 0.16);
 --container: 1120px;
 --header-gap: 12px;
}
/* roulang page: category1 */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
 margin: 0;
 color: var(--c-text);
 background: var(--c-bg);
 font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
 font-size: 16px;
 line-height: 1.75;
}
img { max-width: 100%; display: block; }
a { color: var(--c-primary); text-decoration: none; }
button, input, select, textarea { font-family: inherit; font-size: 16px; color: inherit; }
p { margin: 0; }
h1, h2, h3 { color: var(--c-text); }
h1 { font-size: 36px; line-height: 1.3; margin: 8px 0 0; font-weight: 700; }
h2 { font-size: 26px; line-height: 1.35; margin: 0; font-weight: 700; }
h3 { font-size: 18px; line-height: 1.45; margin: 0; font-weight: 700; }
.container { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; }
.site-header {
 position: sticky;
 top: 0;
 z-index: 40;
 background: var(--c-white);
 border-bottom: 1px solid var(--c-line);
 box-shadow: 0 1px 0 rgba(22, 58, 95, 0.04);
}
.age-bar { background: #F7FBFD; color: var(--c-muted); font-size: 13px; border-bottom: 1px solid var(--c-line); }
.age-bar .container { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; padding: 6px 0; }
.age-mark {
 display: inline-flex;
 align-items: center;
 height: 22px;
 padding: 0 8px;
 border-radius: 999px;
 background: var(--c-hot);
 color: #fff;
 font-size: 12px;
 font-weight: 700;
}
.age-btn {
 margin-left: auto;
 background: var(--c-white);
 color: var(--c-primary);
 border-radius: 999px;
 padding: 4px 12px;
 cursor: pointer;
 border: 1px solid var(--c-primary);
}
.age-btn:hover { background: var(--c-soft); }
.age-btn:focus-visible { outline: 2px solid var(--c-primary); outline-offset: 2px; }
.age-btn[disabled] { cursor: default; color: var(--c-accent); border-color: var(--c-accent); background: var(--c-mint); }
.nav-top {
 display: flex;
 align-items: center;
 gap: 16px;
 min-height: 72px;
 padding: 10px 0;
}
.logo {
 color: var(--c-primary);
 font-weight: 700;
 font-size: 18px;
 line-height: 1.35;
 flex: 1 1 280px;
}
.logo:hover { color: var(--c-primary-deep); }
.search { flex: 1 1 240px; max-width: 360px; margin: 0; }
.search input {
 width: 100%;
 height: 42px;
 border: 1px solid var(--c-line);
 border-radius: 999px;
 padding: 0 16px;
 background: var(--c-white);
}
.search input:focus {
 outline: 2px solid var(--c-primary);
 outline-offset: 1px;
 border-color: var(--c-primary);
}
.channel-wrap { border-top: 1px solid var(--c-line); background: var(--c-white); }
.channel {
 display: flex;
 gap: 8px;
 overflow-x: auto;
 height: 52px;
 align-items: center;
 scrollbar-width: none;
}
.channel::-webkit-scrollbar { display: none; }
.tab {
 display: inline-flex;
 align-items: center;
 height: 34px;
 padding: 0 14px;
 border-radius: 999px;
 color: var(--c-muted);
 white-space: nowrap;
 border: 1px solid transparent;
 font-weight: 600;
}
.tab:hover { color: var(--c-primary); background: var(--c-soft); }
.tab:active { background: #D9E6F1; }
.tab.active { background: var(--c-soft); color: var(--c-primary); font-weight: 700; border-color: #C5D5E4; }
.section { padding: 72px 0; background: var(--c-white); }
main > .section:nth-child(even) { background: var(--c-bg); }
.section-head { max-width: 760px; margin-bottom: 28px; }
.section-head p, .lead { color: var(--c-text); margin-top: 12px; }
.btn {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 min-height: 42px;
 padding: 0 16px;
 border-radius: var(--radius-btn);
 border: 1px solid transparent;
 cursor: pointer;
 transition: background .2s ease, transform .2s ease, box-shadow .2s ease, color .2s ease;
 font-weight: 700;
 white-space: nowrap;
 text-decoration: none;
}
.btn:focus-visible, .tab:focus-visible, .pill:focus-visible, .tag:focus-visible, summary:focus-visible, .sort-btn:focus-visible {
 outline: 2px solid var(--c-primary);
 outline-offset: 2px;
}
.btn-primary { background: var(--c-primary); color: #fff; }
.btn-primary:hover { background: var(--c-primary-deep); color: #fff; transform: translateY(-1px); }
.btn-primary:active { background: #1B415F; transform: translateY(0); }
.btn-ghost { background: var(--c-white); color: var(--c-primary); border-color: var(--c-primary); }
.btn-ghost:hover { background: var(--c-soft); color: var(--c-primary-deep); transform: translateY(-1px); }
.btn-ghost:active { transform: translateY(0); }
.badge-row, .pill-row, .tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
.pill, .tag {
 display: inline-flex;
 align-items: center;
 min-height: 34px;
 padding: 0 14px;
 border-radius: 999px;
 background: var(--c-white);
 color: var(--c-primary);
 border: 1px solid var(--c-line);
 font-size: 14px;
}
.pill:hover, .tag:hover { border-color: var(--c-primary); box-shadow: var(--shadow); color: var(--c-primary-deep); }
.metric-grid, .stack, .scene-list, .compare-list, .floor-grid, .guard-list, .qa-grid, .excerpt-grid, .faq-list, .form-grid {
 display: grid;
 gap: 16px;
}
.metric-card, .post-card, .floor-card, .excerpt-card, .main-floor, .form-card, .faq-item, .qa-item, .news-row, .guard-bar, .scene-row, .compare-band {
 background: var(--c-white);
 border-radius: var(--radius-card);
 box-shadow: var(--shadow);
}
.metric-card, .post-card, .floor-card, .excerpt-card, .qa-item { padding: 18px 18px 16px; }
.metric-card:hover, .post-card:hover, .floor-card:hover, .excerpt-card:hover, .main-floor:hover, .news-row:hover, .scene-row:hover, .compare-band:hover, .guard-bar:hover, .time-node:hover, .related-card:hover {
 box-shadow: var(--shadow-hover);
}
.meta { color: var(--c-muted); font-size: 13px; }
.news-list { display: grid; gap: 12px; }
.news-row {
 display: grid;
 grid-template-columns: minmax(0, 1fr) auto auto auto;
 gap: 12px;
 align-items: center;
 padding: 14px 16px;
 color: var(--c-text);
}
.news-row h3 { font-size: 16px; font-weight: 700; }
.badge {
 display: inline-flex;
 align-items: center;
 height: 24px;
 padding: 0 8px;
 border-radius: 999px;
 background: var(--c-soft);
 color: var(--c-primary);
 font-size: 12px;
 font-weight: 700;
}
.badge-b { background: var(--c-mint); color: #24685A; }
.badge-f { background: #EEF3F7; color: #3D5E78; }
.badge-hot { background: var(--c-hot); color: #fff; }
.qa-grid { grid-template-columns: 1fr 1fr; }
.qa-item h3 { margin-bottom: 8px; font-size: 16px; }
.qa-item p { color: var(--c-muted); font-size: 15px; }
.faq-item { padding: 0 18px; border: 1px solid var(--c-line); }
.faq-item summary { cursor: pointer; min-height: 52px; display: flex; align-items: center; font-weight: 700; }
.faq-item p { color: var(--c-muted); padding-bottom: 14px; }
.crumb { display: flex; gap: 8px; align-items: center; color: var(--c-muted); font-size: 13px; }
.crumb a { color: var(--c-muted); }
.crumb a:hover { color: var(--c-primary); }
.page-head { text-align: left; }
.page-kicker { margin-top: 14px; color: var(--c-muted); font-size: 13px; }
.filter-bar { display: flex; gap: 10px; overflow-x: auto; align-items: center; }
.sort-btn {
 border: 1px solid var(--c-line);
 background: var(--c-white);
 border-radius: 999px;
 height: 36px;
 padding: 0 14px;
 cursor: pointer;
 color: var(--c-text);
 white-space: nowrap;
}
.sort-btn:hover { border-color: var(--c-primary); color: var(--c-primary); }
.sort-btn[aria-pressed="true"] { background: var(--c-primary); color: #fff; border-color: var(--c-primary); }
.list-foot { margin-top: 16px; }
.scene-list { display: grid; gap: 14px; }
.scene-row { padding: 18px 20px; display: grid; grid-template-columns: 132px 1fr; gap: 16px; align-items: center; color: var(--c-text); }
.scene-row:nth-child(2) { margin-left: 36px; }
.scene-row:nth-child(3) { margin-left: 72px; }
.scene-label { font-weight: 700; color: var(--c-primary); }
.timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; position: relative; }
.time-node { background: var(--c-white); border-radius: var(--radius-card); box-shadow: var(--shadow); padding: 18px; }
.time-node strong { display: block; color: var(--c-accent); font-size: 13px; margin-bottom: 8px; }
.related-strip { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 16px; }
.related-card { display: block; background: var(--c-white); border-radius: var(--radius-card); box-shadow: var(--shadow); overflow: hidden; color: var(--c-text); }
.cover { height: 92px; position: relative; }
.cover span { position: absolute; left: 16px; bottom: 12px; width: 46px; height: 8px; border-radius: 999px; background: rgba(255,255,255,.85); }
.cover i { position: absolute; right: 16px; top: 16px; width: 28px; height: 28px; border-radius: 8px; background: rgba(255,255,255,.35); }
.cover-a { background: #2C5F8A; }
.cover-b { background: #3E8E7E; }
.cover-c { background: #6E8EAB; }
.cover-d { background: #C46B4A; }
.related-card div.body { padding: 14px 16px 16px; }
.related-card p { color: var(--c-muted); font-size: 13px; margin-top: 6px; }
.form-card { padding: 22px; }
.form-grid { grid-template-columns: 1fr 1fr; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field.full { grid-column: 1 / -1; }
.field span { font-size: 14px; color: var(--c-muted); }
.field input, .field select, .field textarea {
 border: 1px solid var(--c-line);
 border-radius: 10px;
 min-height: 42px;
 padding: 8px 12px;
 background: #fff;
 width: 100%;
}
.field textarea { min-height: 110px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
 outline: 2px solid var(--c-primary);
 outline-offset: 1px;
 border-color: var(--c-primary);
}
.form-note { min-height: 24px; color: var(--c-accent); font-size: 14px; margin-top: 12px; }
.site-footer { background: #fff; border-top: 1px solid var(--c-line); padding: 36px 0 20px; }
.footer-grid { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; align-items: flex-start; }
.footer-links { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }
.footer-links a { color: var(--c-muted); }
.footer-links a:hover { color: var(--c-primary); }
.copy { color: var(--c-muted); font-size: 13px; margin-top: 18px; }
.empty-note { display: none; color: var(--c-muted); }
.empty-note.show { display: block; }
@media (max-width: 1023px) {
 .related-strip { grid-template-columns: 1fr 1fr; }
 .timeline { grid-template-columns: 1fr 1fr; }
 .scene-row:nth-child(2), .scene-row:nth-child(3) { margin-left: 0; }
 .qa-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 639px) {
 .section { padding: 40px 0; }
 h1 { font-size: 32px; }
 h2 { font-size: 24px; }
 .container { width: min(var(--container), calc(100% - 32px)); }
 .nav-top { flex-wrap: wrap; min-height: 0; }
 .logo { flex: 1 1 100%; }
 .search { max-width: none; flex: 1 1 100%; }
 .age-btn { margin-left: 0; }
 .news-row { grid-template-columns: 1fr; gap: 6px; }
 .scene-row { grid-template-columns: 1fr; }
 .timeline, .related-strip, .qa-grid, .form-grid { grid-template-columns: 1fr; }
 .field.full { grid-column: auto; }
}

/* roulang page: category2 */
:root {
 --c-primary: #2C5F8A;
 --c-primary-deep: #234E72;
 --c-accent: #3E8E7E;
 --c-hot: #C46B4A;
 --c-bg: #F3F6F8;
 --c-white: #FFFFFF;
 --c-text: #1C2833;
 --c-muted: #5C6B7A;
 --c-line: #D5DEE6;
 --c-soft: #E7EEF5;
 --c-mint: #E5F3EF;
 --radius-card: 16px;
 --radius-btn: 10px;
 --shadow: 0 8px 24px rgba(22, 58, 95, 0.08);
 --shadow-hover: 0 14px 32px rgba(22, 58, 95, 0.16);
 --container: 1120px;
 --header-gap: 12px;
}
/* roulang page: category2 */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
 margin: 0;
 color: var(--c-text);
 background: var(--c-bg);
 font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
 font-size: 16px;
 line-height: 1.75;
}
img { max-width: 100%; display: block; }
a { color: var(--c-primary); text-decoration: none; }
button, input, select, textarea { font-family: inherit; font-size: 16px; color: inherit; }
p { margin: 0; }
h1, h2, h3 { margin: 0; font-weight: 700; line-height: 1.35; color: var(--c-text); }
h1 { font-size: 36px; }
h2 { font-size: 26px; }
h3 { font-size: 18px; }
.container { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; }
.site-header {
 position: sticky;
 top: 0;
 z-index: 40;
 background: var(--c-white);
 border-bottom: 1px solid var(--c-line);
 box-shadow: 0 1px 0 rgba(22, 58, 95, 0.04);
}
.age-bar { background: var(--c-soft); color: var(--c-text); font-size: 13px; }
.age-bar .container { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; padding: 6px 0; }
.age-mark {
 display: inline-flex;
 align-items: center;
 height: 22px;
 padding: 0 8px;
 border-radius: 999px;
 background: var(--c-primary);
 color: #fff;
 font-size: 12px;
 font-weight: 700;
}
.age-btn {
 margin-left: auto;
 background: var(--c-white);
 color: var(--c-primary);
 border-radius: 999px;
 padding: 4px 12px;
 cursor: pointer;
 border: 1px solid var(--c-primary);
}
.age-btn:hover { background: var(--c-soft); }
.age-btn:focus-visible { outline: 2px solid var(--c-primary); outline-offset: 2px; }
.age-btn[disabled] { cursor: default; color: var(--c-accent); border-color: var(--c-accent); }
.nav-top {
 display: flex;
 align-items: center;
 gap: 16px;
 min-height: 72px;
 padding: 10px 0;
}
.logo {
 color: var(--c-primary);
 font-weight: 700;
 font-size: 18px;
 line-height: 1.35;
 flex: 1 1 280px;
}
.logo:hover { color: var(--c-primary-deep); }
.search { flex: 1 1 240px; max-width: 360px; margin: 0; }
.search input {
 width: 100%;
 height: 42px;
 border: 1px solid var(--c-line);
 border-radius: 999px;
 padding: 0 16px;
 background: var(--c-white);
}
.search input:focus {
 outline: 2px solid var(--c-primary);
 outline-offset: 1px;
 border-color: var(--c-primary);
}
.channel-wrap { border-top: 1px solid var(--c-line); background: var(--c-white); }
.channel {
 display: flex;
 align-items: center;
 gap: 8px;
 height: 52px;
 overflow-x: auto;
 white-space: nowrap;
}
.tab {
 display: inline-flex;
 align-items: center;
 height: 36px;
 padding: 0 14px;
 border-radius: 999px;
 color: var(--c-text);
 font-weight: 700;
 flex: 0 0 auto;
}
.tab:hover { background: var(--c-soft); color: var(--c-primary-deep); }
.tab.active { background: var(--c-primary); color: #fff; }
.tab:focus-visible, .pill:focus-visible, .tag:focus-visible, summary:focus-visible, .btn:focus-visible {
 outline: 2px solid var(--c-primary);
 outline-offset: 2px;
}
.section { padding: 72px 0; background: var(--c-white); }
.section:nth-child(even) { background: var(--c-bg); }
.section-head { max-width: 760px; margin-bottom: 28px; }
.section-head p, .lead { color: var(--c-text); margin-top: 12px; }
.kicker { color: var(--c-primary); font-size: 13px; font-weight: 700; letter-spacing: 0; }
.meta { color: var(--c-muted); font-size: 13px; }
.btn {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 min-height: 42px;
 padding: 0 16px;
 border-radius: var(--radius-btn);
 border: 1px solid transparent;
 cursor: pointer;
 transition: background .2s ease, transform .2s ease, box-shadow .2s ease, color .2s ease;
 font-weight: 700;
 white-space: nowrap;
 text-decoration: none;
}
.btn-primary { background: var(--c-primary); color: #fff; }
.btn-primary:hover { background: var(--c-primary-deep); color: #fff; transform: translateY(-1px); }
.btn-primary:active { background: #1B415F; transform: translateY(0); }
.btn-ghost { background: var(--c-white); color: var(--c-primary); border-color: var(--c-primary); }
.btn-ghost:hover { background: var(--c-soft); color: var(--c-primary-deep); transform: translateY(-1px); }
.btn-ghost:active { transform: translateY(0); }
.badge-row, .pill-row, .tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
.pill, .tag {
 display: inline-flex;
 align-items: center;
 min-height: 34px;
 padding: 0 14px;
 border-radius: 999px;
 background: var(--c-white);
 color: var(--c-primary);
 border: 1px solid var(--c-line);
 font-size: 14px;
}
.pill:hover, .tag:hover { border-color: var(--c-primary); box-shadow: var(--shadow); color: var(--c-primary-deep); }
.badge {
 display: inline-flex;
 align-items: center;
 height: 24px;
 padding: 0 8px;
 border-radius: 999px;
 background: var(--c-soft);
 color: var(--c-primary);
 font-size: 12px;
 font-weight: 700;
}
.badge-b { background: var(--c-mint); color: #24685A; }
.badge-f { background: #EEF3F7; color: #3D5E78; }
.badge-hot { background: var(--c-hot); color: #fff; }
.cover-card {
 display: grid;
 grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
 gap: 0;
 background: var(--c-white);
 border-radius: var(--radius-card);
 box-shadow: var(--shadow);
 overflow: hidden;
}
.cover-copy { padding: 36px 36px 32px; }
.cover-copy .lead { max-width: 560px; }
.cover-meta { display: flex; flex-wrap: wrap; gap: 10px 18px; margin-top: 18px; }
.cover-art {
 position: relative;
 min-height: 280px;
 background: #E7EEF5;
}
.shape { position: absolute; border-radius: 18px; }
.shape-a { width: 58%; height: 46%; left: 12%; top: 16%; background: #2C5F8A; }
.shape-b { width: 34%; height: 28%; right: 10%; top: 22%; background: #3E8E7E; border-radius: 999px; }
.shape-c { width: 42%; height: 22%; left: 18%; bottom: 16%; background: #fff; box-shadow: var(--shadow); }
.shape-d { width: 18px; height: 18px; right: 18%; bottom: 28%; background: #C46B4A; border-radius: 999px; }
.pick-grid {
 display: grid;
 grid-template-columns: 1.35fr 1fr 0.9fr;
 grid-template-areas:
  "tall wide wide"
  "tall mid short";
 gap: 16px;
}
.pick-tall { grid-area: tall; min-height: 320px; }
.pick-wide { grid-area: wide; min-height: 148px; }
.pick-mid { grid-area: mid; min-height: 168px; }
.pick-short { grid-area: short; min-height: 168px; }
.post-card, .excerpt-card, .form-card, .faq-item, .qa-item, .news-row, .compare-band {
 background: var(--c-white);
 border-radius: var(--radius-card);
 box-shadow: var(--shadow);
}
.post-card, .excerpt-card { padding: 18px 18px 16px; color: var(--c-text); display: block; }
.post-card h3, .excerpt-card h3 { margin-bottom: 8px; }
.post-card p, .excerpt-card p { color: var(--c-muted); font-size: 14px; line-height: 1.7; }
.post-card .more { display: inline-block; margin-top: 12px; color: var(--c-primary); font-weight: 700; }
.post-card:hover, .excerpt-card:hover, .news-row:hover, .compare-band:hover, .form-card:hover {
 box-shadow: var(--shadow-hover);
}
.edge-a { border-top: 4px solid var(--c-primary); }
.edge-b { border-top: 4px solid var(--c-accent); }
.edge-c { border-top: 4px solid #8FB0C9; }
.news-list { display: grid; gap: 12px; }
.news-row {
 display: grid;
 grid-template-columns: minmax(0, 1fr) auto auto auto;
 gap: 12px;
 align-items: center;
 padding: 14px 16px;
 color: var(--c-text);
}
.news-row h3 { font-size: 16px; font-weight: 700; }
.news-row.is-hidden { display: none; }
.list-more { margin-top: 18px; }
.compare-list, .point-list, .excerpt-grid, .faq-list { display: grid; gap: 16px; }
.compare-band { padding: 18px 20px; display: grid; grid-template-columns: 132px 1fr; gap: 16px; align-items: center; }
.compare-band strong { color: var(--c-primary); }
.point-list { list-style: none; margin: 0; padding: 0; }
.point-list li {
 background: var(--c-white);
 border-radius: 12px;
 padding: 12px 16px 12px 18px;
 box-shadow: var(--shadow);
 border-left: 4px solid var(--c-accent);
}
.excerpt-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.quote-mark { color: var(--c-accent); font-weight: 700; font-size: 13px; }
.faq-item { padding: 0; }
.faq-item summary {
 cursor: pointer;
 padding: 12px 16px;
 font-weight: 700;
 list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "＋"; float: right; color: var(--c-primary); }
.faq-item[open] summary::after { content: "－"; }
.faq-item p { padding: 0 16px 14px; color: var(--c-muted); font-size: 14px; }
.form-card { padding: 22px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: grid; gap: 6px; }
.field.full { grid-column: 1 / -1; }
.field span { font-size: 13px; color: var(--c-muted); }
.field input, .field select, .field textarea {
 width: 100%;
 border: 1px solid var(--c-line);
 border-radius: 10px;
 background: #fff;
 padding: 10px 12px;
 min-height: 42px;
}
.field textarea { min-height: 110px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
 outline: 2px solid var(--c-primary);
 outline-offset: 1px;
 border-color: var(--c-primary);
}
.form-note { margin-top: 12px; color: var(--c-muted); font-size: 13px; }
.form-result { margin-top: 12px; color: var(--c-accent); font-weight: 700; min-height: 1.5em; }
.site-footer { background: #fff; border-top: 1px solid var(--c-line); padding-top: 36px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 24px; padding-bottom: 18px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 12px 18px; align-content: start; justify-content: flex-end; }
.footer-links a { color: var(--c-primary); font-weight: 700; }
.footer-links a:hover { color: var(--c-primary-deep); }
.copy { color: var(--c-muted); font-size: 13px; padding: 12px 0 28px; border-top: 1px solid var(--c-line); }
.empty-tip { display: none; padding: 14px 16px; border-radius: 12px; background: var(--c-white); color: var(--c-muted); }
.empty-tip.show { display: block; }
@media (max-width: 1023px) {
 .section { padding: 40px 0; }
 h1 { font-size: 32px; }
 h2 { font-size: 24px; }
 .cover-card, .pick-grid, .excerpt-grid, .footer-grid, .form-grid { grid-template-columns: 1fr 1fr; }
 .pick-grid { grid-template-areas: "tall tall" "wide mid" "short short"; }
 .cover-card { grid-template-columns: 1fr; }
 .excerpt-grid { grid-template-columns: 1fr 1fr; }
 .footer-links { justify-content: flex-start; }
}
@media (max-width: 639px) {
 .container { width: min(var(--container), calc(100% - 28px)); }
 .nav-top { flex-wrap: wrap; min-height: 0; }
 .logo, .search { flex: 1 1 100%; max-width: none; }
 .age-btn { margin-left: 0; }
 .cover-copy { padding: 22px 18px; }
 .cover-art { min-height: 180px; }
 .pick-grid, .excerpt-grid, .footer-grid, .form-grid, .compare-band, .news-row {
  grid-template-columns: 1fr;
  grid-template-areas: none;
 }
 .pick-tall, .pick-wide, .pick-mid, .pick-short { grid-area: auto; min-height: 0; }
 .news-row { align-items: start; }
 .field.full { grid-column: auto; }
}