/* roulang page: index */
:root {
  --paper: #F4F7FB;
  --pale: #E7F0F7;
  --ink: #2C5F8A;
  --ink-hover: #1E4668;
  --film: #A68456;
  --text: #1C2430;
  --muted: #5C6B7A;
  --card: #FFFFFF;
  --line: #D5DEE8;
  --shadow: 0 10px 28px rgba(28,36,48,.08);
  --radius: 16px;
  --radius-img: 12px;
  --pill: 999px;
  --wide: 1120px;
  --read: 720px;
  --pad: 88px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 17px;
  line-height: 1.75;
}
img, svg { display: block; max-width: 100%; }
button, input { font: inherit; color: inherit; }
a { color: var(--ink); text-underline-offset: 3px; }
a:hover { color: var(--ink-hover); }
:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}
.container { width: min(var(--wide), calc(100% - 40px)); margin: 0 auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(244,247,251,.96);
  border-bottom: 1px solid var(--line);
}
.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 16px;
  position: relative;
}
.logo {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 44px;
  text-decoration: none;
  color: var(--text);
}
.logo small {
  color: var(--film);
  font-size: 12px;
  letter-spacing: .12em;
  line-height: 1.2;
}
.logo strong { font-size: 18px; font-weight: 700; line-height: 1.3; }
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border-radius: var(--pill);
  text-decoration: none;
  color: var(--text);
}
.nav-links a:hover, .nav-links a:focus-visible { background: var(--pale); color: var(--ink-hover); }
.nav-links a:active { background: #d5e4f0; }
.nav-links a[aria-current="page"] { background: var(--ink); color: #fff; }
.nav-toggle {
  display: none;
  min-width: 44px;
  min-height: 44px;
  border: 1px solid var(--ink);
  background: transparent;
  border-radius: 12px;
  padding: 8px;
  cursor: pointer;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  position: relative;
}
.nav-toggle span::before, .nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
.progress-wrap { border-top: 1px solid var(--line); }
.progress {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 10px 0;
  scrollbar-width: thin;
}
.step {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 16px;
  border-radius: var(--pill);
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  text-decoration: none;
  font-size: 15px;
}
.step:hover, .step:focus-visible { background: var(--pale); color: var(--ink-hover); }
.step:active { transform: translateY(1px); }
.step.is-current { background: var(--ink); color: #fff; border-color: var(--ink); }
.step i {
  font-style: normal;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid currentColor;
  font-size: 12px;
}
main section { padding: var(--pad) 0; }
main section:nth-of-type(even) { background: var(--pale); }
.eyebrow {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  margin: 0 0 12px;
  color: var(--film);
  font-size: 13px;
  letter-spacing: .08em;
}
h1 { margin: 0 0 16px; font-size: 40px; line-height: 1.25; font-weight: 700; }
h2 { margin: 0 0 14px; font-size: 28px; line-height: 1.35; font-weight: 700; }
.lead, .section-copy { max-width: var(--read); margin: 0 0 22px; color: var(--muted); }
.hero-grid, .guide, .scene, .channels, .compare {
  display: grid;
  gap: 28px;
  align-items: center;
}
.hero-grid { grid-template-columns: 1.12fr .88fr; }
.guide { grid-template-columns: 1.35fr .75fr; align-items: start; }
.scene { grid-template-columns: 1.25fr .75fr; align-items: start; }
.channels { grid-template-columns: 1.65fr .9fr; align-items: stretch; }
.compare { grid-template-columns: 1fr 1fr; align-items: stretch; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: var(--pill);
  text-decoration: none;
  border: 1px solid var(--ink);
  transition: background .2s ease, color .2s ease, transform .2s ease, box-shadow .2s ease;
  cursor: pointer;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover, .btn-primary:focus-visible { background: var(--ink-hover); color: #fff; }
.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover, .btn-ghost:focus-visible { background: #fff; color: var(--ink-hover); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
.badge-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0; }
.badge {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: var(--pill);
  background: #fff;
  border: 1px solid var(--line);
  color: var(--ink);
  font-size: 14px;
  box-shadow: var(--shadow);
}
.frame { margin: 0; }
.art {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-img);
  overflow: hidden;
  background: #d7e3ee;
  box-shadow: var(--shadow);
}
.art svg { width: 100%; height: 100%; }
.art-copy {
  position: absolute;
  left: 20px;
  bottom: 18px;
  color: #fff;
}
.art-copy span { display: block; color: #f3e2c8; font-size: 13px; }
.art-copy strong { font-size: 26px; line-height: 1.3; }
figcaption { margin-top: 8px; color: var(--muted); font-size: 14px; }
.path { list-style: none; margin: 0; padding: 0; border-left: 2px solid #c5d5e4; }
.path li {
  position: relative;
  padding: 0 0 26px 28px;
}
.path li:last-child { padding-bottom: 0; }
.path b {
  position: absolute;
  left: -15px;
  top: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--film);
  color: #fff;
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.path h3 { margin: 0 0 4px; font-size: 20px; }
.path p { margin: 0; color: var(--muted); }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.step-card, .card, .note, .cover, .qa-item, .news-item, .person, .quote {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.step-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 180px;
  padding: 20px;
  text-decoration: none;
  color: var(--text);
}
.step-card:hover, .cover:hover, .news-item:hover, .card:hover {
  transform: translateY(-2px);
  border-color: #b7c9da;
}
.step-card:active, .cover:active { transform: translateY(0); }
.step-card em { font-style: normal; color: var(--film); font-size: 13px; }
.step-card strong { font-size: 18px; }
.step-card span { color: var(--muted); font-size: 15px; }
.side-note h3, .note h3, .card h3 { margin: 12px 0 6px; font-size: 20px; }
.side-note p, .note p, .card p { margin: 0; color: var(--muted); }
.note, .card { padding: 20px; }
.note + .note { margin-top: 14px; }
.result-prose {
  max-width: 860px;
  margin: 0;
  font-size: 20px;
}
.result-prose strong {
  display: inline-block;
  margin: 0 4px;
  color: var(--ink);
  font-size: 42px;
  line-height: 1;
  vertical-align: -6px;
}
.quotes { display: flex; flex-direction: column; gap: 16px; }
.quote { padding: 22px 24px; max-width: 760px; }
.quote:nth-child(2) { margin-left: 88px; }
.quote p { margin: 0 0 10px; font-size: 18px; }
.quote cite { color: var(--muted); font-style: normal; font-size: 14px; }
.people { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.person {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 16px;
  padding: 16px 18px;
  align-items: center;
}
.person b { color: var(--ink); }
.person span { color: var(--muted); }
.news { display: flex; flex-direction: column; gap: 14px; }
.news-item {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 18px;
  padding: 14px;
  text-decoration: none;
  color: var(--text);
}
.news-item h3 { margin: 6px 0; font-size: 20px; }
.news-item p { margin: 0; color: var(--muted); }
.meta-line { display: flex; gap: 8px; align-items: center; color: var(--muted); font-size: 13px; }
.tag {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 8px;
  border-radius: var(--pill);
  background: #f7f1e8;
  color: #7c6238;
}
.more-wrap { margin-top: 16px; }
.cover {
  display: flex;
  flex-direction: column;
  padding: 14px;
  text-decoration: none;
  color: var(--text);
  min-height: 100%;
}
.cover h3 { margin: 12px 0 6px; font-size: 24px; }
.cover p { margin: 0; color: var(--muted); }
.metric-bar {
  display: flex;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: #fff;
  box-shadow: var(--shadow);
  overflow-x: auto;
}
.metric-bar div {
  flex: 1 0 150px;
  min-height: 64px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 8px 18px;
  border-right: 1px solid var(--line);
}
.metric-bar div:last-child { border-right: 0; }
.metric-bar b { color: var(--ink); font-size: 18px; line-height: 1.2; }
.metric-bar span { color: var(--muted); font-size: 13px; }
.qa { display: flex; flex-direction: column; gap: 10px; max-width: 860px; }
.qa-item { padding: 0 18px; }
.qa-item summary {
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}
.qa-item summary::-webkit-details-marker { display: none; }
.qa-item summary::after { content: "+"; color: var(--film); font-size: 22px; line-height: 1; }
.qa-item[open] summary::after { content: "–"; }
.qa-item p { margin: 0 0 16px; color: var(--muted); }
.cta-band {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 28px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.site-footer { background: #fff; border-top: 1px solid var(--line); padding: 36px 0; }
.footer-row { display: flex; justify-content: space-between; gap: 18px; align-items: end; }
.site-footer p { margin: 6px 0 0; color: var(--muted); font-size: 14px; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
@media (max-width: 1024px) {
  :root { --pad: 64px; }
  h1 { font-size: 34px; }
  h2 { font-size: 26px; }
  .hero-grid, .guide, .scene, .channels, .compare, .steps { grid-template-columns: 1fr 1fr; }
  .hero-grid, .guide, .scene, .channels { grid-template-columns: 1fr; }
  .quote:nth-child(2) { margin-left: 36px; }
}
@media (max-width: 768px) {
  :root { --pad: 40px; }
  body { font-size: 16px; }
  h1 { font-size: 30px; }
  h2 { font-size: 24px; }
  .container { width: min(var(--wide), calc(100% - 28px)); }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav-links {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    left: 0;
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
  }
  .nav-links.is-open { display: flex; }
  .steps, .news-item, .person, .compare { grid-template-columns: 1fr; }
  .result-prose { font-size: 18px; }
  .result-prose strong { font-size: 32px; }
  .cta-band, .footer-row { flex-direction: column; align-items: flex-start; }
  .quote:nth-child(2) { margin-left: 0; }
}
@media (max-width: 520px) {
  h1 { font-size: 28px; }
  h2 { font-size: 22px; }
  .steps { grid-template-columns: 1fr; }
  .art-copy strong { font-size: 20px; }
  .actions .btn { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}

.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.nav-toggle { position: relative; }

/* roulang page: category2 */
:root {
  --paper: #F4F7FB;
  --pale: #E7F0F7;
  --ink: #2C5F8A;
  --ink-hover: #1E4668;
  --film: #A68456;
  --text: #1C2430;
  --muted: #5C6B7A;
  --card: #FFFFFF;
  --line: #D5DEE8;
  --shadow: 0 10px 28px rgba(28,36,48,.08);
  --radius: 16px;
  --radius-img: 12px;
  --pill: 999px;
  --wide: 1120px;
  --read: 720px;
  --pad: 88px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 17px;
  line-height: 1.75;
}
img, svg { display: block; max-width: 100%; }
button, input { font: inherit; color: inherit; }
a { color: var(--ink); text-underline-offset: 3px; }
a:hover { color: var(--ink-hover); }
h1, h2, h3, p { overflow-wrap: break-word; }
h1 { margin: 0 0 12px; font-size: 40px; line-height: 1.25; font-weight: 700; }
h2 { margin: 0 0 18px; font-size: 28px; line-height: 1.35; font-weight: 700; }
h3 { margin: 0; font-size: 20px; line-height: 1.45; }
.container { width: min(var(--wide), calc(100% - 40px)); margin: 0 auto; }
.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(244,247,251,.96);
  border-bottom: 1px solid var(--line);
}
.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 16px;
  position: relative;
}
.logo {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 44px;
  text-decoration: none;
  color: var(--text);
}
.logo small {
  color: var(--film);
  font-size: 12px;
  letter-spacing: .12em;
  line-height: 1.2;
}
.logo strong { font-size: 18px; font-weight: 700; line-height: 1.3; }
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border-radius: var(--pill);
  text-decoration: none;
  color: var(--text);
}
.nav-links a:hover, .nav-links a:focus-visible { background: var(--pale); color: var(--ink-hover); }
.nav-links a:active { background: #d5e4f0; }
.nav-links a[aria-current="page"] { background: var(--ink); color: #fff; }
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  border: 1px solid var(--ink);
  background: transparent;
  border-radius: 12px;
  padding: 8px;
  cursor: pointer;
  position: relative;
}
.nav-toggle > span:first-child,
.nav-toggle > span:first-child::before,
.nav-toggle > span:first-child::after {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  position: relative;
}
.nav-toggle > span:first-child::before,
.nav-toggle > span:first-child::after {
  content: "";
  position: absolute;
  left: 0;
}
.nav-toggle > span:first-child::before { top: -6px; }
.nav-toggle > span:first-child::after { top: 6px; }
.nav-toggle:hover, .nav-toggle:focus-visible { background: var(--pale); }
.nav-toggle:active { background: #d5e4f0; }
.progress-wrap { border-top: 1px solid var(--line); background: #fff; }
.progress {
  display: flex;
  gap: 8px;
  padding: 10px 0;
  overflow-x: auto;
}
.step {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 14px;
  border-radius: var(--pill);
  border: 1px solid var(--ink);
  text-decoration: none;
  color: var(--ink);
  white-space: nowrap;
  background: transparent;
  transition: background .2s ease, color .2s ease, transform .2s ease;
}
.step i {
  font-style: normal;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid currentColor;
  font-size: 12px;
}
.step:hover, .step:focus-visible { background: var(--pale); color: var(--ink-hover); transform: translateY(-1px); }
.step:active { transform: translateY(0); }
.step.is-current, .step.is-current:hover { background: var(--ink); color: #fff; }
a:focus-visible, button:focus-visible, .step:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}
main section { padding: var(--pad) 0; }
main section:nth-of-type(even) { background: var(--pale); }
.eyebrow {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  margin: 18px 0 12px;
  color: var(--film);
  font-size: 13px;
  letter-spacing: .08em;
}
.lead, .section-copy { max-width: var(--read); margin: 0 0 22px; color: var(--muted); }
.meta-line { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; color: var(--muted); font-size: 13px; }
.tag {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 8px;
  border-radius: var(--pill);
  background: #f7f1e8;
  color: #7c6238;
}
.frame {
  margin: 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.frame svg, .shot {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  background: #e7eef5;
  border-radius: var(--radius-img);
}
.frame figcaption, .shot-note {
  margin: 0;
  padding: 10px 14px 12px;
  color: var(--muted);
  font-size: 14px;
}
.masthead-copy { max-width: var(--read); }
.timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 8px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  position: relative;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 86px;
  top: 18px;
  bottom: 18px;
  width: 2px;
  background: #c5d3e0;
}
.timeline li {
  display: grid;
  grid-template-columns: 108px minmax(220px, 320px) 1fr;
  gap: 16px;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px;
  position: relative;
  transition: transform .2s ease, border-color .2s ease;
}
.timeline li:hover { transform: translateY(-2px); border-color: #b7c9da; }
.timeline time {
  color: var(--film);
  font-size: 14px;
  font-weight: 700;
}
.timeline h3 { margin-bottom: 6px; }
.timeline p { margin: 0 0 8px; color: var(--muted); }
.timeline .frame { box-shadow: none; }
.text-link { font-weight: 700; }
.more-row { margin-top: 18px; }
.wide-stack { display: flex; flex-direction: column; gap: 28px; }
.wide-row {
  display: grid;
  grid-template-columns: 1.25fr .75fr;
  gap: 28px;
  align-items: center;
}
.wide-row.reverse { grid-template-columns: .75fr 1.25fr; }
.wide-row .copy h2, .wide-row .copy h3 { margin-bottom: 8px; }
.wide-row .copy p { margin: 0; color: var(--muted); }
.h-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  position: relative;
}
.h-steps li {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  min-height: 180px;
  transition: transform .2s ease, border-color .2s ease;
}
.h-steps li:hover { transform: translateY(-2px); border-color: #b7c9da; }
.h-steps li:active { transform: translateY(0); }
.h-steps span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 32px;
  margin-bottom: 10px;
  border-radius: var(--pill);
  background: #f7f1e8;
  color: var(--film);
  font-size: 13px;
  font-weight: 700;
}
.h-steps p { margin: 8px 0 0; color: var(--muted); }
.pullquote {
  margin: 0;
  padding: 32px 36px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  border-left: 6px solid var(--film);
  box-shadow: var(--shadow);
}
.pullquote p { margin: 0; font-size: 24px; line-height: 1.6; }
.pullquote footer { margin-top: 14px; color: var(--muted); font-size: 15px; }
.article-list { display: flex; flex-direction: column; gap: 14px; }
.news-item {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 18px;
  padding: 14px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-decoration: none;
  color: var(--text);
  transition: transform .2s ease, border-color .2s ease;
}
.news-item:hover { transform: translateY(-2px); border-color: #b7c9da; color: var(--text); }
.news-item:active { transform: translateY(0); }
.news-item h3 { margin: 6px 0; font-size: 20px; }
.news-item p { margin: 0; color: var(--muted); }
.news-item .frame { box-shadow: none; border: 0; }
.metric-strip {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin: 0;
  padding: 8px 8px;
  list-style: none;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  box-shadow: var(--shadow);
}
.metric-strip li {
  flex: 1;
  min-height: 44px;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 8px;
  padding: 8px 12px;
}
.metric-strip span { color: var(--muted); font-size: 14px; }
.metric-strip strong { color: var(--ink); font-size: 22px; font-weight: 700; }
.cta-band {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 28px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.cta-band p { margin: 0; color: var(--muted); max-width: var(--read); }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: var(--pill);
  text-decoration: none;
  border: 1px solid var(--ink);
  transition: background .2s ease, color .2s ease, transform .2s ease, box-shadow .2s ease;
  cursor: pointer;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover, .btn-primary:focus-visible { background: var(--ink-hover); color: #fff; }
.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover, .btn-ghost:focus-visible { background: #fff; color: var(--ink-hover); }
.site-footer { background: #fff; border-top: 1px solid var(--line); padding: 36px 0; }
.footer-row { display: flex; justify-content: space-between; gap: 18px; align-items: end; }
.site-footer p { margin: 6px 0 0; color: var(--muted); font-size: 14px; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
@media (max-width: 1024px) {
  :root { --pad: 64px; }
  .nav-toggle { display: inline-flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    border-bottom: 1px solid var(--line);
    padding: 8px 20px 16px;
    box-shadow: var(--shadow);
  }
  .nav-links.is-open { display: flex; }
  .timeline li { grid-template-columns: 92px minmax(180px, 240px) 1fr; }
  .timeline::before { left: 72px; }
  .wide-row, .wide-row.reverse { grid-template-columns: 1fr; }
  .h-steps { grid-template-columns: 1fr; }
  .news-item { grid-template-columns: 200px 1fr; }
}
@media (max-width: 768px) {
  :root { --pad: 40px; }
  h1 { font-size: 32px; }
  h2 { font-size: 24px; }
  .container { width: min(var(--wide), calc(100% - 32px)); }
  .timeline::before { display: none; }
  .timeline li, .news-item { grid-template-columns: 1fr; }
  .metric-strip { flex-direction: column; border-radius: var(--radius); }
  .metric-strip li { justify-content: space-between; }
  .cta-band, .footer-row { flex-direction: column; align-items: flex-start; }
  .pullquote p { font-size: 20px; }
}
@media (max-width: 520px) {
  body { font-size: 16px; }
  h1 { font-size: 28px; }
  .logo strong { font-size: 16px; }
  .pullquote { padding: 22px 18px; }
  .cta-band, .h-steps li, .timeline li { padding: 16px; }
}

/* roulang page: category1 */
:root {
  --paper: #F4F7FB;
  --pale: #E7F0F7;
  --ink: #2C5F8A;
  --ink-hover: #1E4668;
  --film: #A68456;
  --text: #1C2430;
  --muted: #5C6B7A;
  --card: #FFFFFF;
  --line: #D5DEE8;
  --shadow: 0 10px 28px rgba(28,36,48,.08);
  --radius: 16px;
  --radius-img: 12px;
  --pill: 999px;
  --wide: 1120px;
  --read: 720px;
  --pad: 88px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 17px;
  line-height: 1.75;
}
img, svg { display: block; max-width: 100%; }
button, input { font: inherit; color: inherit; }
h1, h2, h3, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: var(--ink); text-underline-offset: 3px; }
a:hover { color: var(--ink-hover); }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }
.container { width: min(var(--wide), calc(100% - 40px)); margin: 0 auto; }
.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(244,247,251,.96);
  border-bottom: 1px solid var(--line);
}
.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 16px;
  position: relative;
}
.logo {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 44px;
  text-decoration: none;
  color: var(--text);
}
.logo small {
  color: var(--film);
  font-size: 12px;
  letter-spacing: .12em;
  line-height: 1.2;
}
.logo strong { font-size: 18px; font-weight: 700; line-height: 1.3; }
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border-radius: var(--pill);
  text-decoration: none;
  color: var(--text);
}
.nav-links a:hover, .nav-links a:focus-visible { background: var(--pale); color: var(--ink-hover); }
.nav-links a:active { background: #d5e4f0; }
.nav-links a[aria-current="page"] { background: var(--ink); color: #fff; }
.nav-toggle {
  display: none;
  min-width: 44px;
  min-height: 44px;
  border: 1px solid var(--ink);
  background: transparent;
  border-radius: 12px;
  padding: 8px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.nav-toggle:hover, .nav-toggle:focus-visible { background: var(--pale); }
.nav-toggle:active { background: #d5e4f0; }
.nav-toggle > span:first-child {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  position: relative;
}
.nav-toggle > span:first-child::before,
.nav-toggle > span:first-child::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--ink);
}
.nav-toggle > span:first-child::before { top: -6px; }
.nav-toggle > span:first-child::after { top: 6px; }
.progress-wrap { overflow-x: auto; }
.progress {
  display: flex;
  gap: 8px;
  padding: 8px 0 12px;
  min-width: max-content;
}
.step {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border-radius: var(--pill);
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
  transition: background .2s ease, color .2s ease, transform .2s ease;
}
.step i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  margin-right: 8px;
  border-radius: 50%;
  border: 1px solid currentColor;
  font-style: normal;
  font-size: 12px;
}
.step:hover, .step:focus-visible { background: #fff; color: var(--ink-hover); }
.step:active { transform: translateY(1px); }
.step.is-current { background: var(--ink); color: #fff; }
.step.is-current i { background: #fff; color: var(--ink); border-color: #fff; }
main section { padding: var(--pad) 0; }
main section:nth-of-type(even) { background: var(--pale); }
.masthead { border-top: 4px solid var(--film); }
h1 { font-size: 40px; line-height: 1.25; font-weight: 700; margin: 0 0 12px; }
h2 { font-size: 28px; line-height: 1.35; font-weight: 700; margin: 0 0 12px; }
h3 { font-size: 20px; line-height: 1.45; font-weight: 700; margin: 0 0 8px; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  margin: 0 0 12px;
  color: var(--film);
  font-size: 13px;
  letter-spacing: .08em;
}
.lead, .section-copy { max-width: var(--read); margin: 0 0 8px; color: var(--muted); }
.section-head { max-width: var(--read); margin-bottom: 28px; }
.meta-line { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; color: var(--muted); font-size: 13px; margin-bottom: 14px; }
.badge-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 0; }
.badge, .tag {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: var(--pill);
  background: #fff;
  border: 1px solid var(--line);
  color: var(--ink);
  font-size: 14px;
}
.tag {
  min-height: 24px;
  background: #f7f1e8;
  color: #7c6238;
  border-color: transparent;
  font-size: 13px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: var(--pill);
  text-decoration: none;
  border: 1px solid var(--ink);
  transition: background .2s ease, color .2s ease, transform .2s ease, box-shadow .2s ease;
  cursor: pointer;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover, .btn-primary:focus-visible { background: var(--ink-hover); color: #fff; }
.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover, .btn-ghost:focus-visible { background: #fff; color: var(--ink-hover); }
.entry-list { display: flex; flex-direction: column; gap: 16px; }
.entry-link {
  display: grid;
  grid-template-columns: minmax(240px, 360px) minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  padding: 14px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-decoration: none;
  color: var(--text);
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.entry-link:hover { transform: translateY(-2px); border-color: #b7c9da; color: var(--text); }
.entry-link:active { transform: translateY(0); }
.entry-link p { margin: 0; color: var(--muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.entry-go { display: inline-block; margin-top: 10px; color: var(--ink); font-weight: 700; }
.frame { margin: 0; }
.frame svg {
  width: 100%;
  aspect-ratio: 16 / 9;
  height: auto;
  border-radius: var(--radius-img);
  background: var(--pale);
}
.frame figcaption { margin-top: 8px; color: var(--muted); font-size: 13px; }
.more-row { margin: 18px 0 0; }
.flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  counter-reset: flow;
}
.flow li {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  min-height: 180px;
}
.flow em { display: block; font-style: normal; color: var(--film); font-size: 13px; letter-spacing: .08em; margin-bottom: 8px; }
.flow p { color: var(--muted); }
.compare-grid, .article-layout {
  display: grid;
  gap: 22px;
  align-items: start;
}
.compare-grid { grid-template-columns: 1fr 1fr; }
.article-layout { grid-template-columns: minmax(0, 720px) minmax(240px, 300px); justify-content: space-between; }
.note, .card, .side, .cta-band {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.note, .card, .side { padding: 22px; }
.note p, .card p, .prose p { color: var(--muted); }
.note ul, .card ul { display: flex; flex-direction: column; gap: 10px; }
.note li, .card li {
  position: relative;
  padding-left: 16px;
  color: var(--text);
}
.note li::before, .card li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--film);
  position: absolute;
  left: 0;
  top: .75em;
}
.prose { max-width: var(--read); }
.prose p + p { margin-top: 16px; }
.prose .frame { margin: 20px 0; }
.side-links { display: flex; flex-direction: column; gap: 12px; }
.side-links a {
  display: block;
  min-height: 44px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  text-decoration: none;
  color: var(--text);
  background: var(--paper);
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}
.side-links a:hover, .side-links a:focus-visible { transform: translateY(-1px); border-color: #b7c9da; background: #fff; color: var(--text); }
.side-links a:active { transform: translateY(0); }
.side-links strong { display: block; }
.side-links span { display: block; color: var(--muted); font-size: 14px; }
.scene-list { display: flex; flex-direction: column; gap: 12px; }
.scene-list li {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 16px;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px 18px;
}
.scene-list b {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  border-radius: 50%;
  background: var(--pale);
  color: var(--ink);
}
.scene-list p { color: var(--muted); }
.timeline {
  margin-left: 8px;
  padding-left: 28px;
  border-left: 1px solid var(--line);
}
.timeline li { position: relative; padding: 0 0 26px; max-width: 760px; }
.timeline li::before {
  content: "";
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--film);
  position: absolute;
  left: -35px;
  top: 8px;
  box-shadow: 0 0 0 4px var(--paper);
}
main section:nth-of-type(even) .timeline li::before { box-shadow: 0 0 0 4px var(--pale); }
.timeline time { display: block; color: var(--film); font-weight: 700; margin-bottom: 4px; }
.timeline p { color: var(--muted); }
.cta-band {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 28px;
}
.cta-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.site-footer { background: #fff; border-top: 1px solid var(--line); padding: 36px 0; }
.footer-row { display: flex; justify-content: space-between; gap: 18px; align-items: end; }
.site-footer p { margin: 6px 0 0; color: var(--muted); font-size: 14px; }
.site-footer a { text-decoration: none; }
.footer-row > a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: var(--pill);
  border: 1px solid var(--ink);
  color: var(--ink);
}
.footer-row > a:hover, .footer-row > a:focus-visible { background: var(--pale); color: var(--ink-hover); text-decoration: none; }
.footer-row > a:active { background: #d5e4f0; }
.step-card, .quote, .news-item, .person {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
@media (max-width: 1024px) {
  :root { --pad: 64px; }
  h1 { font-size: 34px; }
  h2 { font-size: 26px; }
  .article-layout { grid-template-columns: 1fr; }
  .flow { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  :root { --pad: 40px; }
  body { font-size: 16px; }
  h1 { font-size: 32px; }
  h2 { font-size: 24px; }
  .nav-toggle { display: inline-flex; }
  .nav-links {
    display: none;
    position: absolute;
    z-index: 40;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    border-bottom: 1px solid var(--line);
    padding: 8px 16px 12px;
    box-shadow: var(--shadow);
  }
  .nav-links.is-open { display: flex; }
  .nav-links a { width: 100%; }
  .compare-grid, .flow, .entry-link, .scene-list li { grid-template-columns: 1fr; }
  .cta-band, .footer-row { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 520px) {
  h1 { font-size: 28px; }
  .container { width: min(var(--wide), calc(100% - 28px)); }
  .note, .card, .side, .cta-band, .flow li { padding: 16px; }
}