/* roulang page: index */
:root {
  --paper: #f3f6f8;
  --paper-2: #e7eef3;
  --white: #ffffff;
  --ink: #2c3338;
  --muted: #5c6770;
  --line: #d5dee6;
  --line-strong: #c5d3de;
  --blue: #3d7ea6;
  --blue-deep: #2c6488;
  --blue-press: #245272;
  --blue-soft: #e7f2f8;
  --teal: #3e8f86;
  --teal-deep: #1f6b63;
  --teal-soft: #e5f4f1;
  --shadow: 0 10px 24px rgba(70, 104, 130, 0.08);
  --shadow-hover: 0 14px 28px rgba(61, 100, 130, 0.14);
  --radius-nav: 22px;
  --radius-card: 14px;
  --radius-btn: 10px;
  --radius-badge: 999px;
  --ring: 0 0 0 1px #d7e2ea, 0 0 0 3px #ffffff, 0 0 0 4px #c9d7e1;
  --space: 18px;
  --max: 1120px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; border: 0; }
button, input, textarea, select { font-family: inherit; font-size: 16px; color: inherit; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { font-weight: 700; line-height: 1.35; color: var(--ink); letter-spacing: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--blue-deep); }
:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}
::selection { background: #d5ebf5; color: #1d3340; }
.wrap {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}
.wrap > .row { max-width: none; }
.site-header {
  position: sticky;
  top: 16px;
  z-index: 50;
  padding: 0 16px;
  margin-top: 16px;
}
.site-header.is-stuck { top: 8px; }
.nav-shell {
  position: relative;
  max-width: var(--max);
  margin: 0 auto;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-nav);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 12px 8px 16px;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}
.site-header.is-stuck .nav-shell { box-shadow: var(--shadow-hover); }
.logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  font-weight: 700;
  font-size: 16px;
  color: var(--ink);
  flex: 0 1 auto;
}
.logo:hover { color: var(--blue-deep); }
.logo-mark {
  width: 22px;
  height: 14px;
  border-radius: 4px;
  background: var(--ink);
  position: relative;
  flex: 0 0 auto;
}
.logo-mark::after {
  content: "";
  position: absolute;
  left: 3px;
  right: 3px;
  top: 5px;
  height: 3px;
  border-radius: 2px;
  background: #d7f3ee;
}
.nav-toggle {
  display: none;
  min-height: 44px;
  min-width: 44px;
  padding: 0 14px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--blue);
  background: var(--white);
  color: var(--blue-deep);
  cursor: pointer;
}
.nav-toggle:hover { background: var(--blue-soft); }
.nav-toggle:active { background: #d5e7f2; }
.nav-list { display: flex; align-items: center; gap: 4px; }
.nav-list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  border-radius: 12px;
  color: var(--ink);
  font-size: 15px;
}
.nav-list a:hover { background: var(--blue-soft); color: var(--blue-deep); }
.nav-list a:active { background: #d5e7f2; }
.nav-list a.is-active { background: var(--blue-soft); color: var(--blue-deep); font-weight: 700; }
.sec { padding: 76px 0; }
.sec-a { background: var(--paper); }
.sec-b { background: var(--white); }
.sec-c { background: var(--paper-2); }
.sec-head { max-width: 760px; margin-bottom: 28px; }
.sec-no {
  color: var(--blue);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}
.sec h2 { font-size: 28px; }
.sec-lead { margin-top: 10px; color: var(--muted); font-size: 16px; line-height: 1.85; }
.hero-copy { max-width: 760px; }
.hero h1 { font-size: 40px; line-height: 1.25; margin: 8px 0 12px; }
.hero-sub { font-size: 18px; color: var(--ink); margin-bottom: 12px; }
.hero-lead { color: var(--muted); line-height: 1.85; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }
.metric-row { margin-top: 28px; }
.play-card {
  position: relative;
  background: var(--white);
  border-radius: var(--radius-card);
  box-shadow: var(--ring), var(--shadow);
  padding: 48px 18px 18px;
  height: 100%;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
a.play-card { display: block; color: var(--ink); }
a.play-card:hover { color: var(--ink); transform: translateY(-2px); box-shadow: var(--ring), var(--shadow-hover); }
.play-card:active { transform: translateY(0); }
.serial {
  position: absolute;
  top: 12px;
  left: 14px;
  color: var(--blue);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.04em;
}
.badge {
  position: absolute;
  top: 10px;
  right: 12px;
  background: var(--teal-soft);
  color: var(--teal-deep);
  border-radius: var(--radius-badge);
  padding: 4px 10px;
  font-size: 12px;
  line-height: 1.4;
}
.metric-num { font-size: 42px; line-height: 1; color: var(--blue); font-weight: 700; }
.metric-label { margin-top: 8px; font-size: 16px; font-weight: 700; }
.card-text { margin-top: 8px; color: var(--muted); font-size: 15px; line-height: 1.75; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--blue);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
  font-weight: 700;
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-deep); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-primary:active { background: var(--blue-press); color: #fff; transform: translateY(0); box-shadow: none; }
.btn-secondary { background: var(--white); color: var(--blue-deep); }
.btn-secondary:hover { background: var(--blue-soft); color: var(--blue-deep); transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-secondary:active { background: #d5e7f2; color: var(--blue-press); transform: translateY(0); }
.matrix {
  display: grid;
  grid-template-columns: 1.35fr 0.9fr;
  gap: 18px;
}
.span-2 { grid-column: span 1; }
.card-title { font-size: 18px; }
.scene-rail {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding: 4px 2px 12px;
  scroll-snap-type: x mandatory;
}
.scene-card { flex: 0 0 300px; scroll-snap-align: start; }
.frame {
  aspect-ratio: 16 / 9;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--paper-2);
  margin-bottom: 12px;
}
.frame img { width: 100%; height: 100%; object-fit: cover; }
.point-list li {
  position: relative;
  padding-left: 16px;
  margin: 10px 0;
  color: var(--muted);
  line-height: 1.75;
}
.point-list li::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal);
  position: absolute;
  left: 0;
  top: 0.7em;
}
.compare-kicker { color: var(--teal-deep); font-size: 13px; font-weight: 700; margin-bottom: 6px; }
.mile-row { position: relative; }
.mile-row::before {
  content: "";
  position: absolute;
  top: 36px;
  left: 6%;
  right: 6%;
  height: 2px;
  background: var(--line-strong);
}
.news-feature {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 22px;
  align-items: center;
  margin-bottom: 18px;
}
.news-meta { color: var(--blue); font-size: 13px; font-weight: 700; margin-bottom: 6px; }
.news-feature h3, .news-mini h3, .entry-copy h3, .topic-card h3 { font-size: 20px; }
.news-feature h3 a:hover, .news-mini h3 a:hover { color: var(--blue-deep); }
.news-more { margin-top: 18px; }
.entry-list { display: flex; flex-direction: column; gap: 16px; }
.entry-band {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 18px;
  align-items: center;
  background: var(--white);
  border-radius: 18px;
  box-shadow: var(--ring), var(--shadow);
  padding: 22px;
  color: var(--ink);
}
.entry-band:hover { color: var(--ink); transform: translateY(-2px); box-shadow: var(--ring), var(--shadow-hover); }
.entry-index { font-size: 40px; font-weight: 700; color: var(--blue); line-height: 1; }
.topic-card .card-title { padding-right: 52px; }
.assure-list { display: flex; flex-direction: column; gap: 12px; }
.assure-bar {
  display: grid;
  grid-template-columns: 88px 180px 1fr;
  gap: 16px;
  align-items: center;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px 18px;
  box-shadow: var(--shadow);
}
.assure-no { color: var(--blue); font-weight: 700; }
.assure-bar h3 { font-size: 18px; }
.quick-grid .play-card { min-height: 100%; }
.faq-list { max-width: 860px; display: flex; flex-direction: column; gap: 10px; }
.faq-item {
  background: var(--white);
  border-radius: var(--radius-card);
  box-shadow: var(--ring), var(--shadow);
}
.faq-q {
  width: 100%;
  text-align: left;
  background: transparent;
  border: 0;
  min-height: 52px;
  padding: 14px 16px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  cursor: pointer;
  border-radius: var(--radius-card);
  font-weight: 700;
}
.faq-q:hover { background: var(--blue-soft); }
.faq-item.is-open .faq-q { background: var(--blue-soft); }
.faq-mark { color: var(--blue); font-size: 13px; flex: 0 0 auto; }
.faq-mark::before { content: "展开"; }
.faq-item.is-open .faq-mark::before { content: "收起"; }
.faq-a { padding: 0 16px 16px; color: var(--muted); }
.faq-a[hidden] { display: none; }
.rhythm { display: flex; flex-direction: column; gap: 14px; margin-left: 8px; border-left: 2px solid var(--line-strong); padding-left: 8px; }
.rhythm-item { position: relative; }
.rhythm-item::before {
  content: "";
  position: absolute;
  left: -15px;
  top: 26px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 0 4px var(--white);
}
.chip-list { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border-radius: var(--radius-badge);
  background: var(--white);
  border: 1px solid var(--line-strong);
  color: var(--ink);
  box-shadow: var(--shadow);
}
.chip:hover { background: var(--blue-soft); color: var(--blue-deep); border-color: var(--blue); }
.chip:active { background: #d5e7f2; }
.form-panel {
  background: var(--white);
  border-radius: 16px;
  box-shadow: var(--ring), var(--shadow);
  padding: 22px;
}
.field { margin-bottom: 14px; }
.field label { display: block; font-weight: 700; margin-bottom: 6px; }
.field-input {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-btn);
  background: #fff;
  padding: 8px 12px;
}
textarea.field-input { min-height: 120px; resize: vertical; }
.field-input:hover { border-color: var(--blue); }
.field-input:focus { border-color: var(--blue); outline: 2px solid var(--teal); outline-offset: 2px; }
.req { color: var(--teal-deep); font-weight: 700; }
.form-note { margin-top: 12px; color: var(--muted); min-height: 1.5em; }
.form-note.is-error { color: var(--blue-press); }
.site-footer { background: #fff; border-top: 1px solid var(--line); padding: 36px 0 28px; }
.footer-grid { display: flex; justify-content: space-between; gap: 24px; align-items: flex-start; }
.footer-brand { font-size: 18px; font-weight: 700; }
.footer-note { color: var(--muted); margin-top: 8px; max-width: 420px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.footer-links a { display: inline-flex; align-items: center; min-height: 44px; }
.copy { margin-top: 22px; color: var(--muted); font-size: 14px; }
@media (max-width: 1024px) {
  .hero h1 { font-size: 34px; }
  .sec h2 { font-size: 26px; }
  .matrix { grid-template-columns: 1fr 1fr; }
  .entry-band { grid-template-columns: 72px 1fr; }
  .entry-band .btn { grid-column: 2; justify-self: start; }
  .assure-bar { grid-template-columns: 64px 1fr; }
  .assure-bar p { grid-column: 1 / -1; }
  .logo { font-size: 15px; }
}
@media (max-width: 768px) {
  .sec { padding: 48px 0; }
  .nav-toggle { display: inline-flex; }
  .nav-links {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: calc(100% + 8px);
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 16px;
    box-shadow: var(--shadow-hover);
    padding: 8px;
    z-index: 60;
  }
  .nav-links.is-open { display: block; }
  .nav-list { flex-direction: column; align-items: stretch; }
  .nav-list a { width: 100%; }
  .matrix, .news-feature { grid-template-columns: 1fr; }
  .mile-row::before { display: none; }
  .hero h1 { font-size: 30px; }
  .entry-band { grid-template-columns: 1fr; }
  .entry-band .btn { grid-column: auto; }
}
@media (max-width: 520px) {
  .wrap { width: calc(100% - 28px); }
  .sec { padding: 40px 0; }
  .hero h1 { font-size: 28px; }
  .sec h2 { font-size: 22px; }
  .metric-num { font-size: 34px; }
  .scene-card { flex-basis: 86%; width: 86%; }
  .hero-actions .btn, .news-more .btn, .form-panel .btn { width: 100%; }
  .footer-grid { flex-direction: column; }
  .assure-bar { grid-template-columns: 1fr; }
}
@media (min-width: 1024px) {
  .matrix { grid-template-columns: 1.2fr 0.8fr 1fr; }
  .span-2 { grid-column: span 2; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}

/* roulang page: category2 */
:root {
 --paper: #f3f6f8;
 --paper-2: #e7eef3;
 --white: #ffffff;
 --ink: #2c3338;
 --muted: #5c6770;
 --line: #d5dee6;
 --line-strong: #c5d3de;
 --blue: #3d7ea6;
 --blue-deep: #2c6488;
 --blue-press: #245272;
 --blue-soft: #e7f2f8;
 --teal: #3e8f86;
 --teal-deep: #1f6b63;
 --teal-soft: #e5f4f1;
 --shadow: 0 10px 24px rgba(70, 104, 130, 0.08);
 --shadow-hover: 0 14px 28px rgba(61, 100, 130, 0.14);
 --radius-nav: 22px;
 --radius-card: 14px;
 --radius-btn: 10px;
 --radius-badge: 999px;
 --ring: 0 0 0 1px #d7e2ea, 0 0 0 3px #ffffff, 0 0 0 4px #c9d7e1;
 --space: 18px;
 --max: 1120px;
}
html { scroll-behavior: smooth; }
*, *::before, *::after { box-sizing: border-box; }
body {
 margin: 0;
 background: var(--paper);
 color: var(--ink);
 font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
 font-size: 16px;
 line-height: 1.75;
 text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; border: 0; }
button, input, textarea, select { font-family: inherit; font-size: 16px; color: inherit; }
a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--blue-deep); }
p { margin: 0 0 0.6em; }
h1, h2, h3 { margin: 0; font-weight: 700; color: var(--ink); line-height: 1.35; }
ul { margin: 0; padding: 0; list-style: none; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.wrap > .row { max-width: none; }
.site-header {
 position: sticky;
 top: 16px;
 z-index: 50;
 padding: 0 16px;
 margin-top: 16px;
}
.site-header.is-stuck { top: 8px; }
.nav-shell {
 position: relative;
 max-width: var(--max);
 margin: 0 auto;
 background: var(--white);
 border: 1px solid var(--line);
 border-radius: var(--radius-nav);
 box-shadow: var(--shadow);
 display: flex;
 align-items: center;
 justify-content: space-between;
 gap: 12px;
 padding: 8px 12px 8px 16px;
 transition: box-shadow 0.2s ease, border-color 0.2s ease;
}
.site-header.is-stuck .nav-shell { box-shadow: var(--shadow-hover); }
.logo {
 display: inline-flex;
 align-items: center;
 gap: 8px;
 min-height: 44px;
 font-weight: 700;
 font-size: 16px;
 color: var(--ink);
 flex: 0 1 auto;
}
.logo:hover { color: var(--blue-deep); }
.logo-mark {
 width: 22px;
 height: 14px;
 border-radius: 4px;
 background: var(--ink);
 position: relative;
 flex: 0 0 auto;
}
.logo-mark::after {
 content: "";
 position: absolute;
 left: 3px;
 right: 3px;
 top: 5px;
 height: 3px;
 border-radius: 2px;
 background: #d7f3ee;
}
.nav-toggle {
 display: none;
 min-height: 44px;
 min-width: 44px;
 padding: 0 14px;
 border-radius: var(--radius-btn);
 border: 1px solid var(--blue);
 background: var(--white);
 color: var(--blue-deep);
 cursor: pointer;
}
.nav-toggle:hover { background: var(--blue-soft); }
.nav-toggle:active { background: #d5e7f2; }
.nav-toggle:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.nav-list { display: flex; align-items: center; gap: 4px; margin: 0; }
.nav-list a {
 display: inline-flex;
 align-items: center;
 min-height: 44px;
 padding: 0 12px;
 border-radius: 12px;
 color: var(--ink);
 font-size: 15px;
}
.nav-list a:hover { background: var(--blue-soft); color: var(--blue-deep); }
.nav-list a:active { background: #d5e7f2; }
.nav-list a:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.nav-list a.is-active { background: var(--blue-soft); color: var(--blue-deep); font-weight: 700; }
.sec-a { background: var(--paper); }
.sec-b { background: var(--paper-2); }
.section { padding: 72px 0; }
.sec-lead { margin-top: 8px; margin-bottom: 0; color: var(--muted); font-size: 16px; line-height: 1.85; }
.play-card {
 position: relative;
 background: var(--white);
 border-radius: var(--radius-card);
 box-shadow: var(--ring), var(--shadow);
 padding: 48px 18px 18px;
 height: 100%;
 transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.play-card:hover { transform: translateY(-2px); box-shadow: var(--ring), var(--shadow-hover); }
.serial {
 position: absolute;
 top: 12px;
 left: 14px;
 color: var(--blue);
 font-weight: 700;
 font-size: 13px;
 letter-spacing: 0.06em;
}
.badge {
 position: absolute;
 top: 10px;
 right: 12px;
 background: var(--teal-soft);
 color: var(--teal-deep);
 border-radius: var(--radius-badge);
 padding: 4px 10px;
 font-size: 12px;
 line-height: 1.4;
}
.card-text { margin-top: 8px; color: var(--muted); font-size: 15px; line-height: 1.75; }
.btn {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 min-height: 44px;
 padding: 0 18px;
 border-radius: var(--radius-btn);
 border: 1px solid var(--blue);
 cursor: pointer;
 transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
 font-weight: 700;
 text-decoration: none;
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-deep); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-primary:active { background: var(--blue-press); color: #fff; transform: translateY(0); box-shadow: none; }
.btn-secondary { background: var(--white); color: var(--blue-deep); }
.btn-secondary:hover { background: var(--blue-soft); color: var(--blue-deep); transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-secondary:active { background: #d5e7f2; color: var(--blue-press); transform: translateY(0); }
.btn:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }
.card-title { font-size: 18px; padding-right: 48px; }
.point-list li {
 position: relative;
 padding-left: 16px;
 margin: 8px 0;
 color: var(--muted);
 line-height: 1.75;
}
.point-list li::before {
 content: "";
 width: 7px;
 height: 7px;
 border-radius: 50%;
 background: var(--teal);
 position: absolute;
 left: 0;
 top: 0.7em;
}
.news-meta { color: var(--blue); font-size: 13px; font-weight: 700; margin-bottom: 6px; }
.site-footer { background: #e9f0f4; border-top: 1px solid var(--line); padding: 36px 0 22px; }
.footer-grid { display: flex; justify-content: space-between; gap: 24px; align-items: flex-start; }
.footer-brand { font-weight: 700; font-size: 18px; margin-bottom: 8px; }
.footer-note { color: var(--muted); max-width: 460px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.footer-links a { display: inline-flex; align-items: center; min-height: 44px; color: var(--ink); }
.footer-links a:hover { color: var(--blue-deep); }
.copy { margin: 18px 0 0; padding-top: 14px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.band-row { display: flex; align-items: center; gap: 18px; }
.band-no {
 flex: 0 0 auto;
 width: 64px;
 height: 64px;
 border-radius: 16px;
 display: inline-flex;
 align-items: center;
 justify-content: center;
 color: var(--blue);
 font-weight: 700;
 font-size: 22px;
 background: var(--white);
 box-shadow: var(--ring), var(--shadow);
}
.band-copy { flex: 1 1 auto; }
.band h1 { font-size: 34px; line-height: 1.3; }
.band-count {
 flex: 0 0 auto;
 min-width: 92px;
 background: var(--white);
 border-radius: var(--radius-card);
 box-shadow: var(--ring);
 padding: 10px 14px;
 text-align: right;
}
.band-count strong { display: block; font-size: 28px; line-height: 1.1; color: var(--blue-deep); }
.band-count span { color: var(--muted); font-size: 13px; }
.rail {
 display: flex;
 gap: 16px;
 overflow-x: auto;
 scroll-snap-type: x mandatory;
 padding: 8px 2px 18px;
}
.scene-card { flex: 0 0 300px; scroll-snap-align: start; }
.frame {
 position: relative;
 aspect-ratio: 16 / 9;
 border-radius: 10px;
 border: 1px solid var(--line);
 background: #e4edf2;
 margin: 6px 0 12px;
 overflow: hidden;
}
.frame::before {
 content: "";
 position: absolute;
 left: 0;
 right: 0;
 bottom: 0;
 height: 30%;
 background: rgba(44, 51, 56, 0.82);
}
.frame::after {
 content: "";
 position: absolute;
 left: 10%;
 right: 22%;
 bottom: 11%;
 height: 6px;
 border-radius: 3px;
 background: #d7f3ee;
}
.frame-pad::after { left: 8%; right: 14%; height: 7px; }
.frame-desk { background: #dce8ef; }
.frame-desk::after { left: 16%; right: 28%; bottom: 12%; }
.frame-tv::before { height: 24%; }
.frame-tv::after { left: 18%; right: 18%; height: 8px; bottom: 8%; }
.frame-mini { aspect-ratio: 16 / 10; margin: 0; min-height: 96px; }
.compare-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 18px; }
.compare-card { padding-top: 22px; }
.compare-kicker { color: var(--teal-deep); font-size: 13px; font-weight: 700; margin-bottom: 8px; }
.compare-card h3 { font-size: 22px; margin-bottom: 8px; }
.compare-soft { background: #f7fbfb; }
.step-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.step-card { padding-top: 46px; }
.step-card h3 { font-size: 18px; margin-bottom: 8px; }
.news-stack { display: flex; flex-direction: column; gap: 14px; }
.news-line {
 display: grid;
 grid-template-columns: 1.3fr 220px;
 gap: 18px;
 align-items: center;
 background: var(--white);
 border-radius: var(--radius-card);
 box-shadow: var(--ring), var(--shadow);
 padding: 16px;
}
.news-line h3 { font-size: 20px; margin-bottom: 6px; }
.news-line h3 a { color: var(--ink); }
.news-line h3 a:hover { color: var(--blue-deep); }
.news-line p { color: var(--muted); margin: 0; }
.assure-strip {
 display: flex;
 flex-wrap: wrap;
 gap: 10px;
 background: var(--white);
 border-radius: var(--radius-card);
 box-shadow: var(--ring);
 padding: 12px;
}
.assure-strip span {
 flex: 1 1 180px;
 min-height: 44px;
 display: flex;
 align-items: center;
 gap: 8px;
 padding: 8px 12px;
 border-radius: 12px;
 background: var(--paper);
 color: var(--ink);
}
.assure-strip b {
 color: var(--teal-deep);
 font-weight: 700;
 background: var(--teal-soft);
 border-radius: var(--radius-badge);
 padding: 2px 8px;
 font-size: 12px;
}
.qa-list { display: flex; flex-direction: column; gap: 10px; max-width: 860px; }
.qa {
 background: var(--white);
 border-radius: var(--radius-card);
 box-shadow: var(--ring);
 padding: 4px 16px;
}
.qa summary {
 min-height: 48px;
 display: flex;
 align-items: center;
 cursor: pointer;
 font-weight: 700;
 list-style: none;
}
.qa summary::-webkit-details-marker { display: none; }
.qa summary::after { content: "＋"; margin-left: auto; color: var(--blue); font-weight: 700; }
.qa[open] summary::after { content: "－"; }
.qa[open] { background: var(--blue-soft); }
.qa p { color: var(--muted); padding-bottom: 12px; }
.qa:focus-within { box-shadow: 0 0 0 2px var(--blue); }
.cta-row {
 display: flex;
 justify-content: space-between;
 align-items: center;
 gap: 18px;
 background: var(--white);
 border-radius: var(--radius-card);
 box-shadow: var(--ring), var(--shadow);
 padding: 22px;
}
.cta-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.head-line { margin-bottom: 16px; max-width: 760px; }
@media (max-width: 1024px) {
 .band h1 { font-size: 30px; }
 .step-grid { grid-template-columns: repeat(2, 1fr); }
 .scene-card { flex-basis: 280px; }
}
@media (max-width: 768px) {
 .section { padding: 48px 0; }
 .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
 .nav-links {
 display: none;
 position: absolute;
 left: 10px;
 right: 10px;
 top: calc(100% + 8px);
 background: var(--white);
 border: 1px solid var(--line);
 border-radius: 18px;
 box-shadow: var(--shadow-hover);
 padding: 8px;
 }
 .nav-links.is-open { display: block; }
 .nav-list { flex-direction: column; align-items: stretch; }
 .nav-list a { width: 100%; }
 .compare-grid, .news-line, .cta-row, .footer-grid { grid-template-columns: 1fr; display: flex; flex-direction: column; }
 .band-row { align-items: flex-start; }
 .logo span { max-width: 11em; }
}
@media (max-width: 520px) {
 .section { padding: 36px 0; }
 .band h1 { font-size: 26px; }
 .band-row { flex-direction: column; }
 .band-count { text-align: left; }
 .step-grid { grid-template-columns: 1fr; }
 .scene-card { flex-basis: 86%; }
 .cta-actions .btn { width: 100%; }
}

/* roulang page: category1 */
:root {
 --paper: #f3f6f8;
 --paper-2: #e7eef3;
 --white: #ffffff;
 --ink: #2c3338;
 --muted: #5c6770;
 --line: #d5dee6;
 --line-strong: #c5d3de;
 --blue: #3d7ea6;
 --blue-deep: #2c6488;
 --blue-press: #245272;
 --blue-soft: #e7f2f8;
 --teal: #3e8f86;
 --teal-deep: #1f6b63;
 --teal-soft: #e5f4f1;
 --shadow: 0 10px 24px rgba(70, 104, 130, 0.08);
 --shadow-hover: 0 14px 28px rgba(61, 100, 130, 0.14);
 --radius-nav: 22px;
 --radius-card: 14px;
 --radius-btn: 10px;
 --radius-badge: 999px;
 --ring: 0 0 0 1px #d7e2ea, 0 0 0 3px #ffffff, 0 0 0 4px #c9d7e1;
 --space: 18px;
 --max: 1120px;
}
html { scroll-behavior: smooth; }
*, *::before, *::after { box-sizing: border-box; }
body {
 margin: 0;
 background: var(--paper);
 color: var(--ink);
 font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
 font-size: 16px;
 line-height: 1.75;
 text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; border: 0; }
button, input, textarea, select { font-family: inherit; font-size: 16px; color: inherit; }
a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--blue-deep); }
p { margin: 0 0 10px; }
h1, h2, h3, h4 { font-family: inherit; color: var(--ink); letter-spacing: 0; }
h1, h2, h3 { font-weight: 700; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 16px; }
.wrap > .row, .wrap .row { max-width: none; }
.site-header {
 position: sticky;
 top: 16px;
 z-index: 50;
 padding: 0 16px;
 margin-top: 16px;
}
.site-header.is-stuck { top: 8px; }
.nav-shell {
 position: relative;
 max-width: var(--max);
 margin: 0 auto;
 background: var(--white);
 border: 1px solid var(--line);
 border-radius: var(--radius-nav);
 box-shadow: var(--shadow);
 display: flex;
 align-items: center;
 justify-content: space-between;
 gap: 12px;
 padding: 8px 12px 8px 16px;
 transition: box-shadow 0.2s ease, border-color 0.2s ease;
}
.site-header.is-stuck .nav-shell { box-shadow: var(--shadow-hover); }
.logo {
 display: inline-flex;
 align-items: center;
 gap: 8px;
 min-height: 44px;
 font-weight: 700;
 font-size: 16px;
 color: var(--ink);
 flex: 0 1 auto;
}
.logo:hover { color: var(--blue-deep); }
.logo-mark {
 width: 22px;
 height: 14px;
 border-radius: 4px;
 background: var(--ink);
 position: relative;
 flex: 0 0 auto;
}
.logo-mark::after {
 content: "";
 position: absolute;
 left: 3px;
 right: 3px;
 top: 5px;
 height: 3px;
 border-radius: 2px;
 background: #d7f3ee;
}
.nav-toggle {
 display: none;
 min-height: 44px;
 min-width: 44px;
 padding: 0 14px;
 border-radius: var(--radius-btn);
 border: 1px solid var(--blue);
 background: var(--white);
 color: var(--blue-deep);
 cursor: pointer;
}
.nav-toggle:hover { background: var(--blue-soft); }
.nav-toggle:active { background: #d5e7f2; }
.nav-toggle:focus-visible, .logo:focus-visible, .nav-list a:focus-visible, .btn:focus-visible, .chip:focus-visible, .news-row:focus-visible, .rel-row:focus-visible, summary:focus-visible {
 outline: 2px solid var(--blue);
 outline-offset: 2px;
}
.nav-links { display: block; }
.nav-list { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav-list a {
 display: inline-flex;
 align-items: center;
 min-height: 44px;
 padding: 0 12px;
 border-radius: 12px;
 color: var(--ink);
 font-size: 15px;
}
.nav-list a:hover { background: var(--blue-soft); color: var(--blue-deep); }
.nav-list a:active { background: #d5e7f2; }
.nav-list a.is-active { background: var(--blue-soft); color: var(--blue-deep); font-weight: 700; }
.section { padding: 72px 0; }
.sec-a { background: var(--paper); }
.sec-b { background: var(--white); }
.sec-c { background: var(--paper-2); }
.sec-lead { margin-top: 8px; color: var(--muted); font-size: 16px; line-height: 1.85; }
.cat-head { padding: 32px 0 12px; }
.head-row {
 display: flex;
 align-items: flex-end;
 justify-content: space-between;
 gap: 24px;
}
.cat-head h1 { font-size: 34px; line-height: 1.3; margin: 0 0 8px; }
.count-box {
 min-width: 112px;
 background: var(--white);
 border: 1px solid var(--line);
 border-radius: var(--radius-card);
 box-shadow: var(--shadow);
 padding: 10px 16px;
 text-align: right;
}
.count-box strong {
 display: block;
 font-size: 30px;
 line-height: 1.1;
 color: var(--blue);
 font-weight: 700;
}
.count-box span { color: var(--muted); font-size: 13px; }
.block-head { margin-bottom: 18px; max-width: 760px; }
.block-head h2 { font-size: 28px; line-height: 1.35; margin: 0 0 8px; }
.list-grid { margin-top: 6px; }
.wrap .row.list-grid, .wrap .row.cond-grid {
 display: flex;
 flex-wrap: wrap;
 margin-left: -10px;
 margin-right: -10px;
}
.wrap .list-grid > .columns, .wrap .cond-grid > .columns {
 float: none;
 padding-left: 10px;
 padding-right: 10px;
 margin-bottom: 20px;
}
.play-card {
 position: relative;
 background: var(--white);
 border: 1px solid var(--line-strong);
 border-radius: var(--radius-card);
 box-shadow: 0 0 0 1px #fff, 0 0 0 3px #d7e3ec, var(--shadow);
 padding: 48px 16px 16px;
 height: 100%;
 transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.play-card:hover { transform: translateY(-2px); box-shadow: 0 0 0 1px #fff, 0 0 0 3px #c5d6e2, var(--shadow-hover); }
.idx {
 position: absolute;
 top: 12px;
 left: 14px;
 color: var(--blue);
 font-weight: 700;
 font-size: 14px;
 line-height: 1;
 letter-spacing: 0.04em;
}
.badge {
 position: absolute;
 top: 10px;
 right: 12px;
 background: var(--teal-soft);
 color: var(--teal-deep);
 border-radius: var(--radius-badge);
 padding: 4px 10px;
 font-size: 12px;
 line-height: 1.4;
}
.frame {
 aspect-ratio: 16 / 9;
 border-radius: 10px;
 overflow: hidden;
 background: var(--paper-2);
 border: 1px solid var(--line);
 margin-bottom: 12px;
}
.frame img { width: 100%; height: 100%; object-fit: cover; }
.card-title { font-size: 18px; line-height: 1.45; margin: 0 0 6px; padding-right: 8px; }
.card-title a:hover { color: var(--blue-deep); }
.card-text, .status, .updated { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.7; }
.status { margin-top: 4px; }
.chip-row { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 min-height: 44px;
 padding: 0 16px;
 border-radius: var(--radius-badge);
 border: 1px solid var(--line-strong);
 background: var(--white);
 color: var(--ink);
 cursor: pointer;
 transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.chip:hover { background: var(--blue-soft); color: var(--blue-deep); border-color: var(--blue); }
.chip:active { background: #d5e7f2; }
.chip.is-on { background: var(--blue); border-color: var(--blue); color: #fff; }
.chip.is-on:hover { background: var(--blue-deep); color: #fff; }
.empty-note {
 display: none;
 margin-top: 16px;
 color: var(--muted);
 background: var(--white);
 border: 1px dashed var(--line-strong);
 border-radius: var(--radius-card);
 padding: 14px 16px;
}
.empty-note.is-show { display: block; }
.news-list, .rel-list { display: flex; flex-direction: column; gap: 12px; }
.news-row, .rel-row {
 display: grid;
 grid-template-columns: 92px 1fr auto;
 gap: 16px;
 align-items: center;
 background: var(--white);
 border: 1px solid var(--line);
 border-radius: var(--radius-card);
 box-shadow: var(--shadow);
 padding: 14px 16px;
 min-height: 72px;
 color: var(--ink);
 transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.sec-b .news-row { background: var(--paper); }
.news-row:hover, .rel-row:hover {
 color: var(--ink);
 transform: translateY(-2px);
 box-shadow: var(--shadow-hover);
 border-color: var(--line-strong);
}
.news-row:active, .rel-row:active { transform: translateY(0); }
.news-meta { color: var(--blue); font-size: 13px; font-weight: 700; margin: 0; }
.news-row h3, .rel-row h3 { font-size: 18px; margin: 0 0 4px; }
.news-row p, .rel-row p { margin: 0; color: var(--muted); font-size: 14px; }
.inline-badge {
 justify-self: end;
 background: var(--teal-soft);
 color: var(--teal-deep);
 border-radius: var(--radius-badge);
 padding: 4px 10px;
 font-size: 12px;
 line-height: 1.4;
 white-space: nowrap;
}
.cond-card {
 background: var(--white);
 border: 1px solid var(--line);
 border-top: 3px solid var(--blue);
 border-radius: var(--radius-card);
 box-shadow: var(--shadow);
 padding: 16px 14px 14px;
 height: 100%;
}
.cond-card h3 { font-size: 17px; margin: 8px 0; }
.cond-no { color: var(--blue); font-weight: 700; font-size: 13px; }
.point-list { list-style: none; margin: 8px 0 0; padding: 0; }
.point-list li {
 position: relative;
 padding-left: 16px;
 margin: 8px 0;
 color: var(--muted);
 line-height: 1.7;
 font-size: 14px;
}
.point-list li::before {
 content: "";
 width: 7px;
 height: 7px;
 border-radius: 50%;
 background: var(--teal);
 position: absolute;
 left: 0;
 top: 0.65em;
}
.rel-row { grid-template-columns: 92px 1fr; background: var(--white); }
.more-bar {
 display: flex;
 align-items: center;
 justify-content: space-between;
 gap: 18px;
 background: var(--white);
 border: 1px solid var(--line-strong);
 border-radius: var(--radius-card);
 box-shadow: 0 0 0 1px #fff, 0 0 0 3px #d7e3ec, var(--shadow);
 padding: 18px 20px;
}
.more-bar h2 { font-size: 22px; margin: 0 0 6px; }
.more-bar p { margin: 0; color: var(--muted); }
.btn {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 min-height: 44px;
 padding: 0 18px;
 border-radius: var(--radius-btn);
 border: 1px solid var(--blue);
 cursor: pointer;
 transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
 font-weight: 700;
 line-height: 1.2;
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-deep); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-primary:active { background: var(--blue-press); color: #fff; transform: translateY(0); box-shadow: none; }
.btn-secondary { background: var(--white); color: var(--blue-deep); }
.btn-secondary:hover { background: var(--blue-soft); color: var(--blue-deep); transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-secondary:active { background: #d5e7f2; color: var(--blue-press); transform: translateY(0); }
.faq-list { display: flex; flex-direction: column; gap: 10px; }
.faq-item {
 background: var(--white);
 border: 1px solid var(--line);
 border-radius: var(--radius-card);
 box-shadow: var(--shadow);
 overflow: hidden;
}
.faq-item[open] { border-color: #b7cddd; box-shadow: var(--shadow-hover); }
.faq-item summary {
 display: flex;
 align-items: center;
 justify-content: space-between;
 gap: 12px;
 min-height: 52px;
 padding: 12px 16px;
 cursor: pointer;
 font-weight: 700;
 list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
 content: "";
 width: 10px;
 height: 10px;
 border-right: 2px solid var(--blue);
 border-bottom: 2px solid var(--blue);
 transform: rotate(45deg);
 flex: 0 0 auto;
 margin-top: -4px;
 transition: transform 0.2s ease;
}
.faq-item[open] summary { background: var(--blue-soft); color: var(--blue-deep); }
.faq-item[open] summary::after { transform: rotate(225deg); margin-top: 4px; }
.faq-item p { margin: 0; padding: 0 16px 14px; color: var(--muted); }
.site-footer {
 background: var(--paper-2);
 border-top: 1px solid var(--line);
 padding: 36px 0 22px;
}
.footer-grid { display: flex; justify-content: space-between; gap: 24px; align-items: flex-start; }
.footer-brand { font-weight: 700; font-size: 18px; margin: 0 0 8px; }
.footer-note { color: var(--muted); margin: 0; max-width: 540px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; list-style: none; margin: 0; padding: 0; }
.footer-links a {
 min-height: 44px;
 display: inline-flex;
 align-items: center;
 color: var(--blue-deep);
 font-weight: 700;
}
.footer-links a:hover { color: var(--blue-press); }
.copy { color: var(--muted); font-size: 14px; margin: 18px 0 0; }
@media (max-width: 1024px) {
 .cat-head h1 { font-size: 30px; }
 .block-head h2 { font-size: 24px; }
 .section { padding: 56px 0; }
}
@media (max-width: 768px) {
 .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
 .nav-links {
  display: none;
  position: absolute;
  left: 8px;
  right: 8px;
  top: calc(100% + 8px);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-hover);
  padding: 8px;
 }
 .nav-links.is-open { display: block; }
 .nav-list { flex-direction: column; align-items: stretch; }
 .nav-list a { width: 100%; }
 .head-row, .more-bar, .footer-grid { flex-direction: column; align-items: flex-start; }
 .count-box { text-align: left; }
 .news-row, .rel-row { grid-template-columns: 1fr; gap: 6px; }
 .inline-badge { justify-self: start; }
 .section { padding: 44px 0; }
 .cat-head { padding-top: 24px; }
}
@media (max-width: 520px) {
 .logo { font-size: 14px; }
 .cat-head h1 { font-size: 26px; }
 .block-head h2, .more-bar h2 { font-size: 22px; }
 .section { padding: 36px 0; }
 .play-card { padding: 46px 14px 14px; }
 .site-header { padding: 0 10px; }
}
@media (prefers-reduced-motion: reduce) {
 html { scroll-behavior: auto; }
 .play-card, .news-row, .rel-row, .btn, .chip, .nav-shell { transition: none; }
}