/* roulang page: index */
:root {
  --bg: #F3F6FB;
  --paper: #FFFFFF;
  --ink: #1E2A3A;
  --muted: #5C6B80;
  --primary: #3D5A80;
  --primary-deep: #2C4463;
  --line: #D5E0EE;
  --stroke: #E3EAF3;
  --note: #E7F0C9;
  --shadow: 0 10px 28px rgba(61, 90, 128, .10);
  --shadow-soft: 0 8px 20px rgba(61, 90, 128, .08);
  --radius: 12px;
  --radius-btn: 8px;
  --radius-demo: 10px;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --serif: "Songti SC", "SimSun", "Noto Serif SC", "STSong", serif;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 28px;
}
h1, h2, h3, p, ul, ol, figure, blockquote { margin: 0; padding: 0; }
ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }
button, input { font-family: inherit; font-size: inherit; color: inherit; }
button { cursor: pointer; }
img, svg { display: block; max-width: 100%; }
::selection { background: rgba(61, 90, 128, .16); }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.container { width: min(1120px, calc(100% - 48px)); margin: 0 auto; }
.section { padding: 88px 0; scroll-margin-top: 92px; }
main > .section:nth-child(even) { background: var(--paper); }
main > .section:nth-child(odd) { background: transparent; }
#hero, #open { background: var(--bg); }
h1 { font-family: var(--serif); font-size: 40px; line-height: 52px; font-weight: 600; margin: 0 0 12px; }
h2 { font-family: var(--serif); font-size: 28px; line-height: 40px; font-weight: 600; margin: 0 0 14px; }
h3 { font-family: var(--serif); font-size: 20px; line-height: 30px; font-weight: 600; margin: 0 0 8px; }
.lead, .prose { max-width: 760px; margin-bottom: 28px; }
.sub { max-width: 760px; margin: 0 0 16px; color: var(--ink); font-size: 18px; line-height: 30px; }
.muted { color: var(--muted); font-size: 13px; line-height: 20px; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: #fff;
  border-bottom: 1px solid var(--line);
  transition: box-shadow .2s ease;
}
.site-header.is-stuck { box-shadow: 0 6px 18px rgba(61, 90, 128, .08); }
.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.logo { display: flex; align-items: center; gap: 10px; min-height: 44px; }
.logo-mark {
  width: 28px;
  height: 32px;
  border: 1px solid var(--line);
  background: #fff;
  position: relative;
  flex: 0 0 auto;
  box-shadow: var(--shadow-soft);
}
.logo-mark::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  border-top: 10px solid var(--note);
  border-left: 10px solid transparent;
}
.logo-text { font-family: var(--serif); font-size: 18px; line-height: 26px; white-space: normal; }
.logo:hover .logo-text { color: var(--primary-deep); }
.nav-cluster { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.main-nav { display: flex; align-items: center; flex-wrap: wrap; gap: 4px; }
.main-nav a {
  min-height: 44px;
  padding: 0 12px;
  display: inline-flex;
  align-items: center;
  color: var(--ink);
  border-bottom: 2px solid transparent;
}
.main-nav a:hover { color: var(--primary-deep); }
.main-nav a[aria-current="page"] { border-bottom-color: var(--primary); color: var(--primary); font-weight: 600; }
.chips { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.chip {
  min-height: 44px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid var(--primary);
  background: transparent;
  color: var(--primary);
  transition: background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
}
.chip:hover { transform: translateY(-1px); }
.chip.is-live { background: var(--note); color: var(--ink); border-color: var(--primary); }
.chip.is-replay { background: #F7FAFE; color: var(--ink); border-color: var(--line); }
.chip.is-on { border-color: var(--primary-deep); font-weight: 600; }
.paper {
  background: var(--paper);
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.hero-paper { position: relative; padding: 36px 36px 32px; }
.hero-paper::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  border-top: 22px solid var(--note);
  border-left: 22px solid transparent;
  border-top-right-radius: 12px;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--primary);
  font-size: 13px;
  line-height: 20px;
  margin-bottom: 14px;
}
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.7fr) minmax(180px, .55fr); gap: 36px; align-items: stretch; }
.hero-actions { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; margin-top: 8px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: var(--radius-btn);
  border: 1px solid transparent;
  text-decoration: none;
  transition: background .18s ease, color .18s ease, transform .18s ease, box-shadow .18s ease, opacity .18s ease;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-deep); transform: translateY(-1px); box-shadow: 0 8px 18px rgba(61, 90, 128, .16); }
.btn-line { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-line:hover { background: #fff; color: var(--primary-deep); border-color: var(--primary-deep); transform: translateY(-1px); }
.btn:disabled, .is-disabled { opacity: .45; cursor: not-allowed; transform: none; box-shadow: none; }
.text-link {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 4px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.text-link:hover { color: var(--primary-deep); }
.vindex {
  writing-mode: vertical-rl;
  border-left: 1px solid var(--line);
  padding: 8px 0 8px 18px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
  justify-content: flex-start;
}
.vindex a, .vindex span {
  min-height: 44px;
  letter-spacing: .12em;
  color: var(--ink);
}
.vindex a { border-bottom: 1px solid var(--note); }
.vindex a:hover { color: var(--primary-deep); }
.vindex-label { color: var(--muted); font-size: 13px; letter-spacing: .2em; }
.feat-list { display: flex; flex-direction: column; }
.feat-row {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 22px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
}
.feat-row:nth-child(even) { margin-left: 36px; }
.feat-name {
  font-family: var(--serif);
  font-size: 20px;
  line-height: 30px;
  border-left: 4px solid var(--note);
  padding-left: 12px;
}
.scene-list { display: flex; flex-direction: column; gap: 12px; }
.scene-bar {
  display: grid;
  grid-template-columns: 168px minmax(0, 1fr);
  gap: 16px;
  align-items: center;
  background: #fff;
  border: 1px solid var(--stroke);
  border-left: 4px solid var(--note);
  border-radius: var(--radius);
  padding: 18px 22px;
}
.scene-bar:nth-child(2) { margin-left: 28px; }
.scene-bar:nth-child(3) { margin-left: 56px; }
.scene-bar h3 { margin: 0; }
.demo-layout { display: grid; grid-template-columns: minmax(0, 1fr) 230px; gap: 22px; align-items: center; }
.demo-frame {
  display: grid;
  grid-template-columns: 1.25fr .75fr;
  grid-template-rows: 1fr 1fr;
  min-height: 300px;
  border: 1px solid var(--stroke);
  border-radius: var(--radius-demo);
  background: #F7FAFE;
  overflow: hidden;
}
.zone { padding: 22px; border: 1px solid transparent; display: flex; flex-direction: column; justify-content: flex-end; gap: 4px; transition: opacity .18s ease, background .18s ease; }
.zone span { font-family: var(--serif); font-size: 20px; line-height: 30px; }
.zone small { color: var(--muted); font-size: 13px; line-height: 20px; }
.zone-entry { grid-column: 1; grid-row: 1; border-bottom: 1px dashed var(--line); }
.zone-update { grid-column: 1; grid-row: 2; }
.zone-replay { grid-column: 2; grid-row: 1 / span 2; border-left: 1px dashed var(--line); }
.demo-frame[data-view="preheat"] .zone-entry,
.demo-frame[data-view="live"] .zone-update,
.demo-frame[data-view="replay"] .zone-replay { background: #fff; box-shadow: inset 4px 0 0 var(--note); }
.js-state.is-dim { opacity: .38; }
.callouts { display: flex; flex-direction: column; gap: 14px; }
.callouts li {
  background: #fff;
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  padding: 14px 16px 14px 18px;
  position: relative;
  transition: opacity .18s ease;
}
.callouts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 18px;
  height: 1px;
  background: var(--primary);
}
.timeline { margin-left: 8px; border-left: 1px solid var(--line); }
.timeline li { position: relative; padding: 0 0 26px 28px; }
.timeline li::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
  position: absolute;
  left: -5px;
  top: 18px;
}
.case-card {
  background: #fff;
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px 26px;
}
.case-card time, .date, .price-num { font-family: var(--mono); letter-spacing: 0; }
.price-stack { max-width: 880px; }
.price-card {
  width: min(520px, 92%);
  background: #fff;
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 26px 28px;
  position: relative;
}
.price-card.alt { margin-left: auto; margin-top: -68px; z-index: 1; }
.price-card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 18px;
  width: 18px;
  height: 10px;
  background: var(--note);
}
.price-num { font-size: 32px; line-height: 40px; color: var(--primary); margin: 8px 0 14px; }
.price-card ul li { padding: 6px 0 6px 14px; border-left: 4px solid var(--note); margin: 8px 0; }
.review-board { display: grid; grid-template-columns: 1.35fr .85fr; gap: 16px 18px; align-items: start; }
.note {
  background: #fff;
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  padding: 22px 24px;
  transition: box-shadow .18s ease, transform .18s ease;
}
.note:hover { box-shadow: var(--shadow-soft); transform: translateY(-1px); }
.note:nth-child(2) { margin-top: 42px; }
.note:nth-child(3) { margin-top: -8px; }
.note footer { margin-top: 10px; color: var(--muted); font-size: 13px; line-height: 20px; }
.quote-band {
  max-width: 820px;
  background: var(--bg);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  border-left: 4px solid var(--note);
  padding: 28px 28px 24px 32px;
}
.quote-band p { font-family: var(--serif); font-size: 20px; line-height: 34px; }
.quote-band footer { margin-top: 14px; color: var(--muted); font-size: 13px; line-height: 20px; }
.news-list { display: flex; flex-direction: column; }
.news-row {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr);
  gap: 16px;
  padding: 16px 14px;
  border-bottom: 1px solid var(--line);
  min-height: 72px;
  align-items: center;
  transition: box-shadow .18s ease, background .18s ease;
}
.news-row:hover { background: #fff; box-shadow: var(--shadow-soft); }
.news-row time { font-family: var(--mono); color: var(--muted); font-size: 13px; }
.news-title { font-family: var(--serif); font-size: 20px; line-height: 30px; }
.news-row:hover .news-title { color: var(--primary-deep); }
.entry-grid { display: grid; grid-template-columns: 1.35fr .9fr; gap: 20px; }
.entry {
  display: block;
  background: #fff;
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  padding: 26px 28px;
  min-height: 160px;
  transition: box-shadow .18s ease, transform .18s ease;
}
.entry:hover { box-shadow: var(--shadow-soft); transform: translateY(-1px); }
.entry span { color: var(--primary); display: inline-flex; min-height: 44px; align-items: center; }
.week { display: grid; grid-template-columns: repeat(7, 1fr); gap: 10px; margin-bottom: 18px; }
.cell {
  background: #fff;
  border: 1px solid var(--stroke);
  border-radius: 10px;
  min-height: 92px;
  padding: 12px 10px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: opacity .18s ease;
}
.cell strong { font-size: 13px; line-height: 20px; font-weight: 600; }
.tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
  padding: 0 8px;
  border-radius: 999px;
  font-size: 13px;
  line-height: 20px;
  border: 1px solid var(--primary);
  color: var(--primary);
  background: transparent;
}
.tag.live { background: var(--note); color: var(--ink); }
.tag.replay { background: #F7FAFE; border-color: var(--line); color: var(--ink); }
.state-list { display: flex; flex-direction: column; }
.state-item {
  display: grid;
  grid-template-columns: 132px 88px minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  align-items: center;
  transition: opacity .18s ease;
}
.empty-note {
  margin-top: 12px;
  padding: 14px 16px;
  border: 1px dashed var(--line);
  border-radius: 10px;
  background: #fff;
}
.device-list { display: flex; flex-direction: column; }
.device-row {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.device-row h3 { margin: 0; border-bottom: 2px solid var(--note); display: inline-block; }
.index-list { max-width: 760px; }
.index-row {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 8px;
  border-bottom: 1px solid var(--line);
  min-height: 52px;
  align-items: center;
}
.index-row:hover { background: #fff; box-shadow: var(--shadow-soft); }
.index-row b { font-family: var(--serif); font-weight: 600; }
.faq-list { max-width: 760px; display: flex; flex-direction: column; gap: 10px; }
.faq-item { background: #fff; border: 1px solid var(--stroke); border-left: 4px solid var(--note); border-radius: 10px; }
.faq-item button {
  width: 100%;
  text-align: left;
  background: transparent;
  border: 0;
  min-height: 52px;
  padding: 12px 16px;
  font-family: var(--serif);
  font-size: 18px;
  line-height: 30px;
}
.faq-item button[aria-expanded="true"] { color: var(--primary-deep); }
.faq-a { padding: 0 18px 16px 28px; }
.rule-list { display: flex; flex-direction: column; gap: 10px; max-width: 760px; }
.rule-list li {
  background: #fff;
  border: 1px solid var(--stroke);
  border-left: 4px solid var(--note);
  border-radius: 10px;
  padding: 14px 16px;
}
.cta-paper { padding: 32px 32px 28px; position: relative; }
.cta-paper::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  border-top: 18px solid var(--note);
  border-left: 18px solid transparent;
}
.cta-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr); gap: 28px; align-items: start; }
.form-grid { display: grid; gap: 12px; }
label { display: grid; gap: 6px; font-size: 13px; line-height: 20px; color: var(--muted); }
input[type="text"] {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius-btn);
  background: #fff;
  padding: 0 12px;
  color: var(--ink);
}
input[type="text"]:focus { border-color: var(--primary); outline: none; box-shadow: 0 0 0 3px rgba(61, 90, 128, .12); }
.check { display: flex; align-items: center; gap: 8px; min-height: 44px; color: var(--ink); font-size: 16px; line-height: 28px; }
.check input { width: 18px; height: 18px; accent-color: var(--primary); }
.form-actions { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin-top: 8px; }
.site-footer { background: #fff; border-top: 1px solid var(--line); padding: 36px 0 28px; }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(220px, .6fr); gap: 24px; }
.footer-brand { font-family: var(--serif); font-size: 22px; line-height: 32px; margin-bottom: 8px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.footer-links a { min-height: 44px; display: inline-flex; align-items: center; color: var(--primary); }
.footer-links a:hover { color: var(--primary-deep); }
.footer-copy { margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; line-height: 20px; }
@media (max-width: 1200px) {
  .container { width: min(1040px, calc(100% - 40px)); }
}
@media (max-width: 992px) {
  .hero-grid, .demo-layout, .cta-grid, .footer-grid, .entry-grid { grid-template-columns: 1fr; }
  .vindex { writing-mode: horizontal-tb; border-left: 0; border-top: 1px solid var(--line); padding: 16px 0 0; flex-wrap: wrap; }
  .header-inner { flex-wrap: wrap; align-items: flex-start; padding: 10px 0 12px; height: auto; }
  .nav-cluster { width: 100%; }
  .week { grid-template-columns: repeat(4, 1fr); }
  .scene-bar:nth-child(2), .scene-bar:nth-child(3) { margin-left: 20px; }
}
@media (max-width: 768px) {
  h1 { font-size: 28px; line-height: 38px; }
  h2 { font-size: 24px; line-height: 34px; }
  .section { padding: 44px 0; }
  .hero-paper, .cta-paper, .case-card, .price-card, .entry { padding: 22px 18px; }
  .feat-row, .scene-bar, .news-row, .device-row, .index-row, .state-item, .review-board { display: grid; grid-template-columns: 1fr; }
  .feat-row:nth-child(even), .scene-bar:nth-child(2), .scene-bar:nth-child(3), .note:nth-child(2), .note:nth-child(3) { margin-left: 0; margin-top: 0; }
  .price-card, .price-card.alt { width: 100%; margin-left: 0; margin-top: 0; }
  .price-card + .price-card { margin-top: 16px; }
  .demo-frame { display: flex; flex-direction: column; aspect-ratio: 16 / 9; min-height: 0; }
  .zone { flex: 1; }
  .zone-replay { border-left: 0; border-top: 1px dashed var(--line); }
  .quote-band p { font-size: 18px; line-height: 30px; }
}
@media (max-width: 520px) {
  .week { grid-template-columns: repeat(2, 1fr); }
  .container { width: calc(100% - 28px); }
}
@media (max-width: 480px) {
  .container { width: calc(100% - 24px); }
  .main-nav a, .chip { padding-left: 10px; padding-right: 10px; }
  .logo-text { font-size: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}

/* roulang page: category1 */
:root {
 --bg: #F3F6FB;
 --paper: #FFFFFF;
 --ink: #1E2A3A;
 --muted: #5C6B80;
 --primary: #3D5A80;
 --primary-deep: #2C4463;
 --line: #D5E0EE;
 --stroke: #E3EAF3;
 --note: #E7F0C9;
 --shadow: 0 10px 28px rgba(61, 90, 128, .10);
 --shadow-soft: 0 8px 20px rgba(61, 90, 128, .08);
 --radius: 12px;
 --radius-btn: 8px;
 --radius-demo: 10px;
 --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
 --serif: "Songti SC", "SimSun", "Noto Serif SC", "STSong", serif;
 --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}
/* roulang page: category1 */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
 margin: 0;
 background: var(--bg);
 color: var(--ink);
 font-family: var(--sans);
 font-size: 16px;
 line-height: 28px;
}
a { color: inherit; text-decoration: none; }
button, input { font-family: inherit; font-size: inherit; color: inherit; }
button { cursor: pointer; }
img, svg { display: block; max-width: 100%; }
h1, h2, h3, p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
.container { width: min(1120px, calc(100% - 48px)); margin: 0 auto; }
.section { padding: 88px 0; scroll-margin-top: 92px; }
main > .section:nth-child(even) { background: var(--paper); }
main > .section:nth-child(odd) { background: transparent; }
.muted { color: var(--muted); font-size: 13px; line-height: 20px; }
.prose { max-width: 760px; }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; color: var(--ink); }
h1 { font-size: 40px; line-height: 52px; letter-spacing: 0; }
h2 { font-size: 28px; line-height: 40px; margin-bottom: 16px; }
h3 { font-size: 20px; line-height: 30px; }
.site-header {
 position: sticky;
 top: 0;
 z-index: 40;
 background: #fff;
 border-bottom: 1px solid var(--line);
 transition: box-shadow .2s ease;
}
.site-header.is-stuck { box-shadow: 0 6px 18px rgba(61, 90, 128, .08); }
.header-inner {
 min-height: 72px;
 display: flex;
 align-items: center;
 justify-content: space-between;
 gap: 20px;
}
.logo { display: flex; align-items: center; gap: 10px; min-height: 44px; }
.logo-mark {
 width: 28px;
 height: 32px;
 border: 1px solid var(--line);
 background: #fff;
 position: relative;
 flex: 0 0 auto;
 box-shadow: var(--shadow-soft);
}
.logo-mark::after {
 content: "";
 position: absolute;
 top: 0;
 right: 0;
 border-top: 10px solid var(--note);
 border-left: 10px solid transparent;
}
.logo-text { font-family: var(--serif); font-size: 18px; line-height: 26px; white-space: normal; }
.logo:hover .logo-text { color: var(--primary-deep); }
.nav-cluster { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.main-nav { display: flex; align-items: center; flex-wrap: wrap; gap: 4px; }
.main-nav a {
 min-height: 44px;
 padding: 0 12px;
 display: inline-flex;
 align-items: center;
 color: var(--ink);
 border-bottom: 2px solid transparent;
 transition: color .18s ease, border-color .18s ease;
}
.main-nav a:hover { color: var(--primary-deep); }
.main-nav a[aria-current="page"] { border-bottom-color: var(--primary); color: var(--primary); font-weight: 600; }
.chips { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.chip {
 min-height: 44px;
 padding: 0 16px;
 border-radius: 999px;
 border: 1px solid var(--primary);
 background: transparent;
 color: var(--primary);
 transition: background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease, box-shadow .18s ease;
}
.chip:hover { transform: translateY(-1px); }
.chip.is-live { background: var(--note); color: var(--ink); border-color: var(--primary); }
.chip.is-replay { background: #F7FAFE; color: var(--ink); border-color: var(--line); }
.chip.is-on { border-color: var(--primary-deep); font-weight: 600; box-shadow: inset 0 0 0 1px var(--primary-deep); }
.chip:disabled, .is-disabled { opacity: .45; cursor: not-allowed; transform: none; box-shadow: none; }
a:focus-visible, button:focus-visible, summary:focus-visible {
 outline: 2px solid var(--primary);
 outline-offset: 3px;
}
.page-head { padding-top: 48px; padding-bottom: 36px; }
.head-block { max-width: 760px; }
.scope { margin-top: 12px; max-width: 640px; color: var(--ink); }
.count-line {
 margin-top: 18px;
 display: inline-flex;
 align-items: baseline;
 gap: 8px;
 min-height: 44px;
 padding: 0 14px;
 border: 1px solid var(--stroke);
 border-left: 4px solid var(--note);
 border-radius: var(--radius-btn);
 background: var(--paper);
}
.count-line .num {
 font-family: var(--mono);
 font-size: 28px;
 line-height: 1;
 color: var(--primary);
}
.stage-bar {
 display: flex;
 align-items: center;
 justify-content: space-between;
 gap: 18px;
 flex-wrap: wrap;
 padding-bottom: 8px;
 border-bottom: 1px solid var(--line);
}
.stage-meta { font-family: var(--mono); font-size: 13px; line-height: 20px; color: var(--muted); }
.catalog { display: flex; flex-direction: column; }
.note-row {
 display: grid;
 grid-template-columns: 148px minmax(0, 1fr) auto;
 gap: 18px;
 align-items: center;
 padding: 16px 12px;
 border-bottom: 1px solid var(--line);
 background: transparent;
 transition: background .18s ease, box-shadow .18s ease, transform .18s ease;
}
.note-row:hover {
 background: var(--paper);
 box-shadow: var(--shadow-soft);
 transform: translateY(-1px);
}
.note-row time {
 font-family: var(--mono);
 font-size: 14px;
 line-height: 22px;
 color: var(--primary-deep);
}
.note-row h3 { font-size: 18px; line-height: 28px; }
.note-row p { color: var(--muted); font-size: 14px; line-height: 22px; margin-top: 2px; }
.state-tag {
 min-height: 28px;
 padding: 0 10px;
 display: inline-flex;
 align-items: center;
 border-radius: 999px;
 border: 1px solid var(--primary);
 font-size: 13px;
 line-height: 20px;
 color: var(--primary);
 background: transparent;
 white-space: nowrap;
}
.state-tag.is-live { background: var(--note); color: var(--ink); border-color: var(--primary); }
.state-tag.is-replay { background: #F7FAFE; color: var(--ink); border-color: var(--line); }
.empty-note {
 display: none;
 margin-top: 18px;
 padding: 22px 24px;
 border: 1px dashed var(--line);
 border-radius: var(--radius);
 background: var(--paper);
 color: var(--muted);
}
.empty-note.is-show { display: block; }
.more-line {
 display: flex;
 align-items: center;
 justify-content: space-between;
 gap: 18px;
 flex-wrap: wrap;
 max-width: 760px;
}
.text-link {
 color: var(--primary);
 text-decoration: underline;
 text-underline-offset: 4px;
 min-height: 44px;
 display: inline-flex;
 align-items: center;
}
.text-link:hover { color: var(--primary-deep); }
.btn {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 min-height: 44px;
 padding: 0 18px;
 border-radius: var(--radius-btn);
 border: 1px solid transparent;
 text-decoration: none;
 transition: background .18s ease, color .18s ease, transform .18s ease, box-shadow .18s ease, opacity .18s ease;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-deep); transform: translateY(-1px); box-shadow: 0 8px 18px rgba(61, 90, 128, .16); }
.btn-line { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-line:hover { background: #fff; color: var(--primary-deep); border-color: var(--primary-deep); transform: translateY(-1px); }
.rule-list { display: flex; flex-direction: column; max-width: 760px; }
.rule-item {
 padding: 18px 18px 18px 22px;
 border-bottom: 1px solid var(--line);
 border-left: 4px solid var(--note);
 background: transparent;
}
.rule-item strong { display: block; font-family: var(--serif); font-size: 20px; line-height: 30px; font-weight: 600; margin-bottom: 4px; }
.split {
 display: grid;
 grid-template-columns: minmax(0, 8fr) minmax(220px, 4fr);
 gap: 28px;
 align-items: start;
}
.device-row {
 display: grid;
 grid-template-columns: 96px minmax(0, 1fr);
 gap: 16px;
 padding: 18px 0;
 border-bottom: 1px solid var(--line);
}
.device-row a {
 color: var(--primary);
 text-decoration: underline;
 text-underline-offset: 3px;
}
.device-row a:hover { color: var(--primary-deep); }
.side-note {
 background: var(--paper);
 border: 1px solid var(--stroke);
 border-radius: var(--radius);
 box-shadow: var(--shadow);
 padding: 24px 26px;
}
main > .section:nth-child(even) .side-note { background: var(--bg); }
.side-note p + p { margin-top: 10px; }
.faq-list { max-width: 760px; display: flex; flex-direction: column; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary {
 min-height: 52px;
 display: flex;
 align-items: center;
 gap: 12px;
 cursor: pointer;
 list-style: none;
 padding: 8px 8px 8px 14px;
 border-left: 4px solid var(--note);
 font-family: var(--serif);
 font-size: 18px;
 line-height: 28px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--primary-deep); }
.faq-item[open] summary { color: var(--primary); }
.faq-item .answer {
 padding: 4px 12px 16px 18px;
 color: var(--ink);
 max-width: 680px;
}
.close-bar {
 background: var(--paper);
 border: 1px solid var(--stroke);
 border-radius: var(--radius);
 box-shadow: var(--shadow);
 padding: 28px;
 display: flex;
 align-items: center;
 justify-content: space-between;
 gap: 18px;
 flex-wrap: wrap;
 position: relative;
}
.close-bar::before {
 content: "";
 position: absolute;
 left: 0;
 top: 12px;
 bottom: 12px;
 width: 4px;
 background: var(--note);
 border-radius: 4px;
}
.close-copy { padding-left: 12px; max-width: 680px; }
.close-copy h2 { margin-bottom: 8px; }
.site-footer {
 background: #fff;
 border-top: 1px solid var(--line);
 padding: 36px 0 22px;
}
.footer-grid {
 display: flex;
 justify-content: space-between;
 gap: 24px;
 flex-wrap: wrap;
 align-items: flex-start;
}
.footer-brand { font-family: var(--serif); font-size: 20px; line-height: 30px; margin-bottom: 8px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.footer-links a {
 min-height: 44px;
 display: inline-flex;
 align-items: center;
 color: var(--primary);
 border-bottom: 1px solid transparent;
}
.footer-links a:hover { color: var(--primary-deep); border-bottom-color: var(--primary); }
.footer-copy {
 margin-top: 18px;
 padding-top: 14px;
 border-top: 1px solid var(--line);
 color: var(--muted);
 font-size: 13px;
 line-height: 20px;
}
@media (max-width: 1200px) {
 .container { width: min(1040px, calc(100% - 40px)); }
}
@media (max-width: 1024px) {
 h1 { font-size: 34px; line-height: 46px; }
 .split { grid-template-columns: minmax(0, 1fr) 240px; }
}
@media (max-width: 992px) {
 .header-inner { align-items: flex-start; padding: 12px 0; }
 .note-row { grid-template-columns: 120px minmax(0, 1fr); }
 .state-tag { grid-column: 2; justify-self: start; }
}
@media (max-width: 768px) {
 .container { width: calc(100% - 32px); }
 .section { padding: 44px 0; }
 h1 { font-size: 28px; line-height: 38px; }
 h2 { font-size: 24px; line-height: 34px; }
 .nav-cluster, .main-nav, .chips { width: 100%; }
 .split, .note-row, .device-row { grid-template-columns: 1fr; }
 .state-tag { grid-column: auto; }
 .close-bar { align-items: flex-start; }
 .page-head { padding-top: 28px; }
}
@media (max-width: 520px) {
 .logo-text { font-size: 16px; line-height: 24px; }
 .chip, .main-nav a, .btn, .text-link { min-height: 44px; }
 .note-row { padding: 14px 0; }
 .close-bar, .side-note { padding: 20px 18px; }
}
@media (max-width: 480px) {
 .section { padding: 40px 0; }
 .count-line { width: 100%; }
 .stage-bar { align-items: flex-start; }
}

/* roulang page: category2 */
:root {
 --bg: #F3F6FB;
 --paper: #FFFFFF;
 --ink: #1E2A3A;
 --muted: #5C6B80;
 --primary: #3D5A80;
 --primary-deep: #2C4463;
 --line: #D5E0EE;
 --stroke: #E3EAF3;
 --note: #E7F0C9;
 --shadow: 0 10px 28px rgba(61, 90, 128, .10);
 --shadow-soft: 0 8px 20px rgba(61, 90, 128, .08);
 --radius: 12px;
 --radius-btn: 8px;
 --radius-demo: 10px;
 --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
 --serif: "Songti SC", "SimSun", "Noto Serif SC", "STSong", serif;
 --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
 margin: 0;
 background: var(--bg);
 color: var(--ink);
 font-family: var(--sans);
 font-size: 16px;
 line-height: 28px;
}
a { color: inherit; text-decoration: none; }
button, input { font-family: inherit; font-size: inherit; color: inherit; }
button { cursor: pointer; }
img, svg { display: block; max-width: 100%; }
h1, h2, h3, p, ul, ol { margin: 0; }
ul { padding: 0; list-style: none; }
h1 {
 font-family: var(--serif);
 font-size: 40px;
 line-height: 52px;
 font-weight: 600;
}
h2 {
 font-family: var(--serif);
 font-size: 28px;
 line-height: 40px;
 font-weight: 600;
 margin-bottom: 16px;
}
h3 {
 font-family: var(--serif);
 font-size: 20px;
 line-height: 30px;
 font-weight: 600;
}
a:focus-visible, button:focus-visible {
 outline: 2px solid var(--primary);
 outline-offset: 3px;
}
.container { width: min(1120px, calc(100% - 48px)); margin: 0 auto; }
.section { padding: 88px 0; scroll-margin-top: 92px; }
main > .section:nth-child(even) { background: var(--paper); }
main > .section:nth-child(odd) { background: transparent; }
.lead { max-width: 760px; margin-bottom: 28px; }
.muted { color: var(--muted); font-size: 13px; line-height: 20px; }
.site-header {
 position: sticky;
 top: 0;
 z-index: 40;
 background: #fff;
 border-bottom: 1px solid var(--line);
 transition: box-shadow .2s ease;
}
.site-header.is-stuck { box-shadow: 0 6px 18px rgba(61, 90, 128, .08); }
.header-inner {
 min-height: 72px;
 display: flex;
 align-items: center;
 justify-content: space-between;
 gap: 20px;
}
.logo { display: flex; align-items: center; gap: 10px; min-height: 44px; }
.logo-mark {
 width: 28px;
 height: 32px;
 border: 1px solid var(--line);
 background: #fff;
 position: relative;
 flex: 0 0 auto;
 box-shadow: var(--shadow-soft);
}
.logo-mark::after {
 content: "";
 position: absolute;
 top: 0;
 right: 0;
 border-top: 10px solid var(--note);
 border-left: 10px solid transparent;
}
.logo-text { font-family: var(--serif); font-size: 18px; line-height: 26px; }
.logo:hover .logo-text { color: var(--primary-deep); }
.nav-cluster { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.main-nav { display: flex; align-items: center; flex-wrap: wrap; gap: 4px; }
.main-nav a {
 min-height: 44px;
 padding: 0 12px;
 display: inline-flex;
 align-items: center;
 color: var(--ink);
 border-bottom: 2px solid transparent;
}
.main-nav a:hover { color: var(--primary-deep); }
.main-nav a[aria-current="page"] { border-bottom-color: var(--primary); color: var(--primary); font-weight: 600; }
.chips { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.chip {
 min-height: 44px;
 padding: 0 16px;
 border-radius: 999px;
 border: 1px solid var(--primary);
 background: transparent;
 color: var(--primary);
 transition: background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
}
.chip:hover { transform: translateY(-1px); }
.chip.is-live { background: var(--note); color: var(--ink); border-color: var(--primary); }
.chip.is-replay { background: #F7FAFE; color: var(--ink); border-color: var(--line); }
.chip.is-on { border-color: var(--primary-deep); font-weight: 600; }
.btn {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 min-height: 44px;
 padding: 0 18px;
 border-radius: var(--radius-btn);
 border: 1px solid transparent;
 transition: background .18s ease, color .18s ease, transform .18s ease, box-shadow .18s ease, opacity .18s ease;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-deep); transform: translateY(-1px); box-shadow: 0 8px 18px rgba(61, 90, 128, .16); }
.btn-line { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-line:hover { background: #fff; color: var(--primary-deep); border-color: var(--primary-deep); transform: translateY(-1px); }
.btn:disabled, .is-disabled { opacity: .45; cursor: not-allowed; transform: none; box-shadow: none; }
.text-link {
 color: var(--primary);
 text-decoration: underline;
 text-underline-offset: 4px;
 min-height: 44px;
 display: inline-flex;
 align-items: center;
}
.text-link:hover { color: var(--primary-deep); }
.page-head-grid {
 display: grid;
 grid-template-columns: minmax(0, 1fr) 240px;
 gap: 32px;
 align-items: end;
 background: var(--paper);
 border: 1px solid var(--stroke);
 border-radius: var(--radius);
 box-shadow: var(--shadow);
 padding: 28px;
 position: relative;
}
.page-head-grid::after {
 content: "";
 position: absolute;
 top: 0;
 right: 0;
 border-top: 16px solid var(--note);
 border-left: 16px solid transparent;
 border-top-right-radius: 12px;
}
.head-copy { max-width: 760px; }
.head-copy p { margin-top: 12px; }
.head-status {
 border-left: 4px solid var(--note);
 padding: 8px 0 8px 16px;
}
.status-note {
 font-family: var(--mono);
 font-size: 18px;
 line-height: 28px;
 margin: 6px 0;
}
.timeline {
 position: relative;
 margin: 8px 0 0 8px;
 padding-left: 36px;
}
.timeline::before {
 content: "";
 position: absolute;
 left: 0;
 top: 8px;
 bottom: 8px;
 width: 1px;
 background: var(--line);
}
.node { position: relative; margin: 0 0 18px; }
.node:last-child { margin-bottom: 0; }
.node::before {
 content: "";
 position: absolute;
 left: -41px;
 top: 28px;
 width: 11px;
 height: 11px;
 border-radius: 50%;
 background: #fff;
 border: 2px solid var(--primary);
}
.node[data-state="live"]::before { background: var(--note); }
.node[data-state="replay"]::before { background: #F7FAFE; }
.node-card {
 background: #fff;
 border: 1px solid var(--stroke);
 border-radius: var(--radius);
 box-shadow: var(--shadow);
 padding: 24px 26px;
}
.node-top {
 display: flex;
 justify-content: space-between;
 gap: 16px;
 align-items: baseline;
 margin-bottom: 8px;
}
.node time, .date, .price-num { font-family: var(--mono); letter-spacing: 0; }
.node time { color: var(--muted); font-size: 13px; line-height: 20px; }
.path-line { margin-top: 8px; color: var(--ink); }
.result-line { margin-top: 4px; color: var(--muted); font-size: 16px; line-height: 28px; }
.tag {
 display: inline-flex;
 align-items: center;
 min-height: 28px;
 padding: 0 10px;
 border-radius: 999px;
 border: 1px solid var(--line);
 font-size: 13px;
 line-height: 20px;
 color: var(--primary);
 background: #fff;
}
.tag-live { background: var(--note); color: var(--ink); border-color: var(--primary); }
.tag-replay { background: #F7FAFE; color: var(--ink); }
.empty-note {
 margin-top: 16px;
 padding: 24px 26px;
 background: #fff;
 border: 1px dashed var(--line);
 border-radius: var(--radius);
}
.demo-wrap { max-width: 920px; }
.demo-caption { margin-bottom: 14px; }
.demo-frame {
 position: relative;
 background: #fff;
 border: 1px solid var(--stroke);
 border-radius: var(--radius-demo);
 box-shadow: var(--shadow);
 min-height: 320px;
 padding: 28px;
}
.demo-frame::before {
 content: "";
 position: absolute;
 left: 48px;
 top: 22px;
 width: 18px;
 height: 18px;
 border-left: 2px solid var(--primary);
 border-bottom: 2px solid var(--primary);
 transform: rotate(-45deg);
}
.demo-screen { padding-top: 28px; }
.anno {
 display: inline-block;
 border-bottom: 2px solid var(--note);
 font-size: 13px;
 line-height: 20px;
 color: var(--primary-deep);
 margin-bottom: 10px;
}
.demo-role {
 font-family: var(--serif);
 font-size: 28px;
 line-height: 40px;
 margin-bottom: 18px;
}
.demo-marks { display: flex; flex-direction: column; gap: 10px; max-width: 520px; }
.demo-marks li {
 min-height: 44px;
 display: flex;
 align-items: center;
 padding: 0 16px;
 border: 1px solid var(--stroke);
 border-radius: 8px;
 background: var(--bg);
}
.demo-frame[data-view="preheat"] .mark-entry,
.demo-frame[data-view="live"] .mark-update,
.demo-frame[data-view="replay"] .mark-replay {
 background: #fff;
 box-shadow: inset 4px 0 0 var(--note);
}
.quote-list { max-width: 860px; }
.quote-bar {
 display: grid;
 grid-template-columns: 96px minmax(0, 1fr);
 gap: 18px;
 align-items: center;
 padding: 18px 4px;
 border-top: 1px solid var(--line);
}
.quote-bar:last-child { border-bottom: 1px solid var(--line); }
.quote-bar q { quotes: none; font-size: 16px; line-height: 28px; }
.compare {
 display: grid;
 grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
 gap: 22px;
 align-items: start;
}
.plan {
 background: #fff;
 border: 1px solid var(--stroke);
 border-radius: var(--radius);
 box-shadow: var(--shadow);
 padding: 26px 28px;
}
.plan.alt { margin-top: 36px; }
.price-num { font-size: 32px; line-height: 40px; color: var(--primary); margin: 8px 0 14px; }
.price-num span { font-size: 14px; color: var(--muted); margin-left: 4px; }
.plan ul li {
 position: relative;
 padding: 8px 0 8px 14px;
 border-top: 1px solid var(--line);
}
.plan ul li::before {
 content: "";
 position: absolute;
 left: 0;
 top: 18px;
 width: 6px;
 height: 6px;
 background: var(--note);
 border: 1px solid var(--primary);
}
.plan .btn { margin-top: 18px; }
.dir-list { max-width: 860px; }
.dir-row {
 display: grid;
 grid-template-columns: 128px minmax(0, 1fr);
 gap: 18px;
 align-items: center;
 min-height: 56px;
 padding: 8px 12px;
 border-bottom: 1px solid var(--line);
 transition: background .18s ease, box-shadow .18s ease;
}
.dir-row:hover { background: #fff; box-shadow: var(--shadow-soft); }
.dir-row .date { color: var(--muted); font-size: 13px; }
.more-bar {
 display: flex;
 justify-content: space-between;
 align-items: center;
 gap: 20px;
 background: #fff;
 border: 1px solid var(--stroke);
 border-radius: var(--radius);
 box-shadow: var(--shadow);
 padding: 26px 28px;
}
.more-bar p { max-width: 640px; }
.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-family: var(--serif);
 font-size: 18px;
 line-height: 28px;
 margin: 0 0 8px;
}
.footer-links { display: flex; flex-wrap: wrap; gap: 4px 8px; }
.footer-links a {
 min-height: 44px;
 padding: 0 8px;
 display: inline-flex;
 align-items: center;
 color: var(--primary);
}
.footer-links a:hover { color: var(--primary-deep); }
.footer-copy {
 margin-top: 18px;
 padding-top: 16px;
 border-top: 1px solid var(--line);
 color: var(--muted);
 font-size: 13px;
 line-height: 20px;
}
@media (max-width: 1200px) {
 .container { width: min(1040px, calc(100% - 40px)); }
}
@media (max-width: 1024px) {
 .page-head-grid { grid-template-columns: 1fr; }
 .head-status { border-left: 0; border-top: 4px solid var(--note); padding: 12px 0 0; }
 .compare { grid-template-columns: 1fr; }
 .plan.alt { margin-top: 0; }
}
@media (max-width: 992px) {
 h1 { font-size: 34px; line-height: 46px; }
 .section { padding: 72px 0; }
 .quote-bar { grid-template-columns: 72px minmax(0, 1fr); }
}
@media (max-width: 768px) {
 .header-inner { flex-wrap: wrap; align-items: flex-start; padding: 10px 0; }
 .nav-cluster { width: 100%; }
 .section { padding: 44px 0; }
 .container { width: calc(100% - 32px); }
 h1 { font-size: 28px; line-height: 38px; }
 h2 { font-size: 24px; line-height: 34px; }
 .timeline { margin-left: 0; padding-left: 28px; }
 .node::before { left: -33px; }
 .node-top { flex-direction: column; gap: 6px; }
 .demo-frame { aspect-ratio: 16 / 9; min-height: 0; padding: 16px; }
 .demo-role { font-size: 22px; line-height: 32px; }
 .quote-bar, .dir-row, .more-bar, .footer-grid { grid-template-columns: 1fr; display: flex; flex-direction: column; align-items: flex-start; }
 .more-bar { align-items: flex-start; }
 .plan { padding: 22px; }
}
@media (max-width: 520px) {
 .logo-text { font-size: 16px; line-height: 24px; }
 .main-nav a, .chip { padding-left: 10px; padding-right: 10px; }
 .page-head-grid, .node-card, .demo-frame, .more-bar { padding: 18px; }
 .price-num { font-size: 28px; }
}
@media (max-width: 480px) {
 .section { padding: 40px 0; }
 .container { width: calc(100% - 24px); }
 .footer-links a { padding: 0; }
}