/* roulang page: index */
:root {
  --paper: #F5F3EE;
  --ink: #17161A;
  --panel: #121116;
  --body: #23222A;
  --mut: #68646E;
  --line: #E2DDD2;
  --accent: #DF4A2A;
  --accent-hover: #C53E1E;
  --gold: #C9B37A;
  --white: #FFFFFF;
  --radius: 10px;
  --shadow: 0 12px 36px rgba(23, 22, 26, .06);
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--body);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { background: none; border: 0; cursor: pointer; font-family: inherit; }
input, textarea, select { font-family: inherit; }

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  height: 72px;
  background: rgba(245, 243, 238, .92);
  border-bottom: 1px solid rgba(226, 221, 210, .78);
  backdrop-filter: blur(8px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.1;
  letter-spacing: .02em;
}

.brand span {
  display: block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .18em;
  color: var(--accent);
  text-transform: uppercase;
  margin-top: 3px;
}

.primary-nav {
  display: flex;
  align-items: center;
}

.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 28px;
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 8px 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  transition: color .2s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 100%;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .25s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

.nav-cta {
  margin-left: 8px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  padding: 14px 24px;
  min-height: 44px;
  transition: color .2s ease, background .2s ease, transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  text-align: center;
  border: 1px solid transparent;
}

.btn:focus-visible,
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 10px 22px rgba(223, 74, 42, .16);
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 14px 26px rgba(197, 62, 30, .2);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-ghost {
  border-color: rgba(255, 255, 255, .6);
  color: #fff;
  background: transparent;
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, .08);
  border-color: #fff;
}

.btn-dark {
  background: var(--ink);
  color: #fff;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  position: relative;
  z-index: 65;
  border-radius: 8px;
}

.menu-toggle span,
.menu-toggle span::before,
.menu-toggle span::after {
  content: "";
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  position: absolute;
  left: 12px;
  transition: transform .3s ease, opacity .3s ease;
}

.menu-toggle span { top: 21px; }
.menu-toggle span::before { top: -6px; }
.menu-toggle span::after { top: 6px; }

.menu-open .menu-toggle span {
  background: transparent;

}

.menu-open .menu-toggle span::before {
  transform: rotate(45deg) translate(4px, 4px);
}

.menu-open .menu-toggle span::after {
  transform: rotate(-45deg) translate(4px, -4px);
}

.menu-toggle[aria-expanded="true"] span {
  background: transparent;
}

.hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  background:
    linear-gradient(rgba(20, 18, 23, .78), rgba(20, 18, 23, .84)),
    url('/assets/images/backpic/back-1.png') center center / cover;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 64px;
  align-items: center;
  min-height: 640px;
  padding-top: 80px;
  padding-bottom: 80px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .16em;
  color: rgba(255, 255, 255, .72);
  text-transform: uppercase;
  margin-bottom: 20px;
}

.hero-eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--gold);
}

.hero h1 {
  margin: 0 0 18px;
  font-size: clamp(36px, 5vw, 60px);
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: -.02em;
  color: #fff;
}

.hero-lead {
  font-size: 18px;
  line-height: 1.7;
  color: rgba(255, 255, 255, .86);
  max-width: 480px;
  margin: 0 0 12px;
}

.hero-note {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, .6);
  max-width: 460px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.metric-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.metric-card {
  position: relative;
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .13);
  border-radius: 10px;
  padding: 24px 22px 20px;
  overflow: hidden;
  transition: background .25s ease, transform .25s ease;
}

.metric-card:hover {
  background: rgba(255, 255, 255, .1);
  transform: translateY(-2px);
}

.metric-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.metric-label {
  font-size: 13px;
  color: rgba(255, 255, 255, .72);
  margin: 0;
}

.metric-pill {
  font-size: 11px;
  font-weight: 600;
  color: #ffe9d8;
  background: rgba(223, 74, 42, .22);
  border-radius: 999px;
  padding: 3px 8px;
  white-space: nowrap;
}

.metric-number {
  display: block;
  font-family: var(--font-mono);
  font-size: 42px;
  line-height: 1;
  font-weight: 600;
  color: #fff;
  font-variant-numeric: tabular-nums;
  margin-bottom: 10px;
  letter-spacing: -.02em;
}

.metric-desc {
  display: block;
  font-size: 12px;
  line-height: 1.55;
  color: rgba(255, 255, 255, .55);
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, .1);
}

.metric-accent {
  color: var(--gold);
}

.section {
  padding: 96px 0;
}

.section-head {
  max-width: 680px;
  margin-bottom: 56px;
}

.section-kicker {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(24px, 3.4vw, 42px);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--ink);
  margin: 0 0 16px;
}

.section-copy {
  font-size: 16px;
  color: var(--mut);
  line-height: 1.8;
  margin: 0;
}

.services {
  background: var(--paper);
}

.matrix {
  border-top: 1px solid var(--line);
}

.matrix-row {
  display: grid;
  grid-template-columns: 84px 1.4fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 34px 24px 34px 8px;
  border-bottom: 1px solid var(--line);
  position: relative;
  border-radius: 4px;
  transition: background .25s ease, padding-left .25s ease;
}

.matrix-row::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18%;
  width: 3px;
  height: 64%;
  border-radius: 4px;
  background: var(--gold);
  opacity: 0;
  transform: scaleY(.5);
  transition: opacity .2s, transform .25s ease;
}

.matrix-row:hover {
  background: #FAF8F2;
  padding-left: 18px;
}

.matrix-row:hover::before {
  opacity: 1;
  transform: scaleY(1);
}

.matrix-index {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 500;
  color: var(--gold);
  letter-spacing: .04em;
}

.matrix-title {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 650;
  color: var(--ink);
  line-height: 1.35;
}

.matrix-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mut);
  max-width: 540px;
}

.matrix-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.tag {
  display: inline-block;
  background: rgba(201, 179, 122, .14);
  color: #7c642c;
  font-size: 12px;
  font-weight: 500;
  padding: 5px 12px;
  border-radius: 999px;
  line-height: 1.3;
  white-space: nowrap;
}

.news-section {
  background: var(--ink);
  color: #fff;
  padding: 96px 0;
}

.news-section .section-title { color: #fff; }
.news-section .section-copy { color: rgba(255, 255, 255, .62); }

.news-list {
  display: grid;
  gap: 14px;
  margin-top: 40px;
}

.news-card {
  display: grid;
  grid-template-columns: 148px 1fr;
  gap: 20px;
  align-items: center;
  padding: 18px;
  background: rgba(255, 255, 255, .045);
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: 12px;
  transition: background .25s ease, transform .25s ease, border-color .25s ease;
}

.news-card:hover {
  background: rgba(255, 255, 255, .08);
  border-color: rgba(255, 255, 255, .15);
  transform: translateY(-2px);
}

.news-thumb {
  overflow: hidden;
  border-radius: 8px;
  aspect-ratio: 16 / 10;
  background: rgba(255, 255, 255, .04);
}

.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}

.news-card:hover .news-thumb img {
  transform: scale(1.04);
}

.news-copy { min-width: 0; }

.news-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 6px;
  font-size: 12px;
  color: rgba(255, 255, 255, .48);
}

.news-meta time {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.news-tag {
  color: var(--gold);
  background: rgba(201, 179, 122, .12);
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
}

.news-copy h3 {
  margin: 0 0 6px;
  font-size: 17px;
  line-height: 1.45;
  font-weight: 600;
  color: #fff;
  transition: color .2s ease;
}

.news-copy h3 a { color: inherit; }

.news-card:hover .news-copy h3 {
  color: #fff;
}

.news-copy p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, .62);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.read-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
}

.read-link::after {
  content: "→";
  transition: transform .2s ease;
}

.news-card:hover .read-link::after {
  transform: translateX(4px);
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 64px 20px;
  background: rgba(255, 255, 255, .035);
  border: 1px dashed rgba(255, 255, 255, .16);
  border-radius: 12px;
  color: rgba(255, 255, 255, .55);
  margin-top: 32px;
}

.empty-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(223, 74, 42, .14);
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 300;
  margin-bottom: 14px;
}

.compare-section {
  background: #FCFAF6;
}

.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.compare-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 34px;
  background: #fff;
  box-shadow: var(--shadow);
}

.compare-card h3 {
  margin: 0 0 4px;
  font-size: 20px;
  font-weight: 650;
  color: var(--ink);
}

.compare-sub {
  font-size: 13px;
  color: var(--mut);
  margin-bottom: 28px;
}

.compare-item {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.6;
}

.compare-item:last-child {
  border-bottom: 0;
}

.compare-item .left {
  color: var(--mut);
}

.compare-item .right {
  color: var(--ink);
  font-weight: 600;
  text-align: right;
}

.compare-result {
  color: var(--accent) !important;
}

.faq-section {
  background: #EFEBE3;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid #D8D3C7;
}

.faq-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: 100%;
  min-height: 56px;
  text-align: left;
  padding: 16px 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.45;
}

.faq-toggle:hover {
  color: var(--accent);
}

.faq-icon {
  position: relative;
  flex: 0 0 22px;
  height: 22px;
  display: inline-block;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transform: translate(-50%, -50%);
  transition: transform .3s ease;
}

.faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-item.open .faq-icon::after {
  transform: translate(-50%, -50%) rotate(45deg);
}

.faq-item.open .faq-icon::before {
  transform: translate(-50%, -50%) rotate(45deg);
}

.faq-panel {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height .35s ease, opacity .3s ease, margin .3s ease;
}

.faq-panel p {
  margin: 0;
  padding: 0 42px 20px 0;
  font-size: 14px;
  line-height: 1.8;
  color: #555057;
}

.contact-section {
  background: var(--panel);
  color: #fff;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.contact-section .section-title {
  color: #fff;
}

.contact-section .section-kicker {
  color: var(--gold);
}

.contact-copy {
  color: rgba(255, 255, 255, .7);
  font-size: 15px;
  line-height: 1.85;
  margin: 0 0 28px;
}

.contact-meta {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 12px;
}

.contact-meta li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, .68);
}

.contact-meta li span {
  color: #fff;
  font-weight: 500;
}

.form-card {
  background: #fff;
  color: var(--body);
  border-radius: 12px;
  padding: 38px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, .18);
}

.form-title {
  margin: 0 0 22px;
  font-size: 20px;
  font-weight: 650;
  color: var(--ink);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--mut);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  border: 1px solid #DCD6CB;
  background: #FAF9F6;
  border-radius: 8px;
  padding: 11px 14px;
  font-size: 14px;
  color: var(--body);
  transition: border-color .2s, box-shadow .2s, background .2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(223, 74, 42, .12);
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

.form-btn {
  width: 100%;
  margin-top: 6px;
}

.form-feedback {
  margin: 12px 0 0;
  font-size: 13px;
  color: var(--accent);
  text-align: center;
  min-height: 20px;
}

.site-footer {
  background: var(--panel);
  color: rgba(255, 255, 255, .68);
  padding: 64px 0 0;
  border-top: 4px solid var(--accent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.3fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-brand .brand {
  color: #fff;
  margin-bottom: 14px;
}

.footer-about {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .6);
  margin: 12px 0 0;
  max-width: 260px;
}

.footer-title {
  color: #fff;
  font-size: 15px;
  font-weight: 650;
  margin: 0 0 18px;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, .6);
  transition: color .2s, padding-left .2s;
}

.footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}

.footer-copyright {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.footer-copyright p {
  font-size: 12px;
  color: rgba(255, 255, 255, .44);
  margin: 0;
}

/* reveal animation */
.js .reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .45s ease, transform .45s ease;
}

.js .reveal.in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
  html { scroll-behavior: auto; }
}

@media (max-width: 992px) {
  .menu-toggle { display: block; }

  .primary-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #FBF9F4;
    border-bottom: 1px solid var(--line);
    padding: 10px 24px 24px;
    box-shadow: 0 22px 40px rgba(0, 0, 0, .08);
  }

  .primary-nav.show { display: block; }

  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .nav-links li {
    border-bottom: 1px solid rgba(226, 221, 210, .6);
  }

  .nav-links li:last-child {
    border-bottom: 0;
  }

  .nav-link {
    display: block;
    padding: 12px 2px;
    font-size: 15px;
  }

  .nav-link::after { display: none; }

  .nav-link.active,
  .nav-link:hover {
    color: var(--accent);
  }

  .nav-cta {
    width: 100%;
    margin: 16px 0 0;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
    padding-top: 64px;
    padding-bottom: 64px;
  }

  .section {
    padding: 64px 0;
  }

  .news-section {
    padding: 64px 0;
  }

  .contact-grid,
  .compare-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 768px) {
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }

  .matrix-row {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 28px 16px 28px 6px;
  }

  .matrix-row:hover {
    padding-left: 12px;
  }

  .matrix-tags {
    justify-content: flex-start;
  }

  .matrix-tags .tag {
    white-space: nowrap;
  }

  .news-card {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .news-thumb {
    aspect-ratio: 16 / 9;
    width: 100%;
  }

  .section-title {
    font-size: 26px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-brand {
    max-width: none;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .hero-inner {
    min-height: 0;
    padding-top: 48px;
    padding-bottom: 48px;
  }

  .hero h1 {
    font-size: 36px;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .metric-card {
    padding: 18px 16px;
  }

  .metric-number {
    font-size: 32px;
  }

  .form-card {
    padding: 26px 20px;
  }

  .compare-card {
    padding: 24px 18px;
  }
}

/* roulang page: article */
:root{
  --paper:#F5F3EE;
  --ink:#17161A;
  --panel:#121116;
  --text:#23222A;
  --muted:#68646E;
  --line:#E2DDD2;
  --accent:#DF4A2A;
  --accent-dark:#C53E1E;
  --gold:#C9B37A;
  --radius:10px;
  --shadow:0 6px 20px rgba(0,0,0,.06);
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{font-weight:600;line-height:1.2;color:var(--ink)}
ul,ol{list-style:none}

.footer-inner,
.page-container{
  max-width:1180px;
  margin-inline:auto;
  padding-inline:24px;
}
.page-container{width:100%}

.page-article .content-main{
  background:var(--paper);
}

/* header */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(245,243,238,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.site-header::before{
  content:"";
  display:block;
  height:4px;
  background:var(--accent);
}
.header-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:72px;
}
.brand{
  display:inline-flex;
  align-items:baseline;
  gap:12px;
  color:var(--ink);
  font-size:22px;
  font-weight:700;
  letter-spacing:.01em;
  white-space:nowrap;
}
.brand span{
  display:block;
  font-size:10px;
  color:var(--accent);
  letter-spacing:.3em;
  font-weight:600;
  text-transform:uppercase;
}
.primary-nav .nav-links{
  display:flex;
  align-items:center;
  gap:28px;
}
.primary-nav .nav-link{
  position:relative;
  display:inline-block;
  padding:12px 0 10px;
  font-size:15px;
  color:var(--text);
  transition:color .2s ease;
}
.primary-nav .nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:4px;
  height:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .25s ease;
}
.primary-nav .nav-link:hover,
.primary-nav .nav-link.active{
  color:var(--accent);
}
.primary-nav .nav-link:hover::after,
.primary-nav .nav-link.active::after{
  transform:scaleX(1);
}
.primary-nav .nav-cta-wrap{
  margin-left:10px;
}
.nav-cta{
  height:44px;
  padding:0 24px;
  border-radius:8px;
}
.menu-toggle{
  display:none;
  width:44px;
  height:44px;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  gap:6px;
  border-radius:8px;
  background:transparent;
}
.menu-toggle span{
  display:block;
  width:24px;
  height:2px;
  background:var(--ink);
  border-radius:4px;
  transition:transform .25s ease,opacity .2s ease;
}
.menu-toggle.open span:first-child{transform:translateY(4px) rotate(45deg)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:last-child{transform:translateY(-4px) rotate(-45deg)}
.menu-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

@media(max-width:992px){
  .menu-toggle{display:flex}
  .primary-nav{
    position:fixed;
    top:0;right:0;bottom:0;
    width:min(78vw,340px);
    background:var(--paper);
    border-left:1px solid var(--line);
    box-shadow:-12px 0 40px rgba(0,0,0,.08);
    padding:100px 28px 28px;
    transform:translateX(100%);
    transition:transform .3s ease;
    overflow-y:auto;
    z-index:70;
  }
  .primary-nav.open{transform:translateX(0)}
  .primary-nav .nav-links{
    flex-direction:column;
    align-items:stretch;
    gap:12px;
  }
  .primary-nav .nav-link{
    padding:8px 0;
    font-size:16px;
  }
  .primary-nav .nav-cta-wrap{margin-top:14px}
  .primary-nav .nav-cta{width:100%}
}

/* buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:8px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  padding:13px 26px;
  transition:background-color .25s ease,color .25s ease,transform .2s ease,border-color .25s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
}
.btn:active{
  transform:translateY(0);
}
.btn-primary{
  background:var(--accent);
  border:1px solid var(--accent);
  color:#fff;
}
.btn-primary:hover{
  background:var(--accent-dark);
  border-color:var(--accent-dark);
  transform:translateY(-2px);
  box-shadow:0 12px 24px rgba(223,74,42,.16);
}
.btn-outline{
  background:transparent;
  border:1px solid rgba(255,255,255,.25);
  color:#fff;
}
.btn-outline:hover{
  border-color:var(--accent);
  color:#fff;
}

/* article lead */
.article-lead{
  background:var(--paper);
  padding:72px 0 38px;
  border-bottom:1px solid var(--line);
}
.breadcrumb{
  margin-bottom:28px;
}
.breadcrumb ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:12px;
  color:var(--muted);
}
.breadcrumb li{
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.breadcrumb li+li::before{
  content:"/";
  color:var(--line);
  font-size:12px;
}
.breadcrumb a:hover{
  color:var(--accent);
}
.breadcrumb .current{
  color:var(--text);
}
.article-title{
  max-width:900px;
  font-size:clamp(32px,4vw,52px);
  line-height:1.14;
  letter-spacing:-.02em;
  color:var(--ink);
  margin-top:30px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 0;
  margin-top:24px;
  font-size:13px;
  color:var(--muted);
}
.article-meta .meta-item{
  display:inline-flex;
  align-items:center;
}
.article-meta .meta-sep{
  color:var(--line);
  padding:0 12px;
}
.article-meta a:hover{
  color:var(--accent);
}

/* article copy */
.article-copy-wrap{
  background:#fff;
  padding:56px 0 40px;
}
.article-copy{
  max-width:760px;
  margin-inline:auto;
  font-size:16px;
  line-height:1.9;
  color:var(--text);
}
.article-copy h2{
  font-size:24px;
  margin-top:48px;
  margin-bottom:18px;
  padding-bottom:10px;
  border-bottom:1px solid var(--line);
}
.article-copy h3{
  font-size:20px;
  margin-top:36px;
  margin-bottom:14px;
  color:var(--ink);
}
.article-copy p{
  margin-bottom:1.6em;
}
.article-copy ul,
.article-copy ol{
  margin:1.2em 0 1.6em;
  padding-left:1.4em;
}
.article-copy ul{
  list-style:disc;
}
.article-copy ol{
  list-style:decimal;
}
.article-copy li{
  margin-bottom:.6em;
}
.article-copy blockquote{
  background:var(--paper);
  border-left:4px solid var(--accent);
  color:var(--text);
  padding:18px 24px;
  border-radius:0 10px 10px 0;
  margin:34px 0;
}
.article-copy blockquote p{
  margin-bottom:0;
}
.article-copy img{
  border-radius:10px;
  margin:30px 0;
  box-shadow:0 10px 24px rgba(0,0,0,.07);
}
.article-copy a{
  color:var(--accent);
  border-bottom:1px solid rgba(223,74,42,.3);
  transition:border-color .2s ease,color .2s ease;
}
.article-copy a:hover{
  color:var(--accent-dark);
  border-color:var(--accent-dark);
}
.article-copy table{
  width:100%;
  border-collapse:collapse;
  margin:30px 0;
  font-size:14px;
}
.article-copy th,
.article-copy td{
  border:1px solid var(--line);
  padding:10px 14px;
  text-align:left;
}
.article-copy th{
  background:var(--paper);
  font-weight:600;
}
.article-copy code{
  background:var(--paper);
  padding:2px 8px;
  border-radius:6px;
  font-size:.92em;
  font-family:SFMono-Regular,Consolas,monospace;
}
.article-copy hr{
  border:0;
  height:1px;
  background:var(--line);
  margin:48px 0;
}

/* article empty */
.empty-state{
  text-align:center;
  padding:80px 20px;
  border:1px dashed var(--line);
  border-radius:10px;
  background:#fff;
}
.empty-state .empty-icon{
  display:flex;
  align-items:center;
  justify-content:center;
  width:56px;
  height:56px;
  margin:0 auto 22px;
  border-radius:50%;
  background:var(--paper);
  color:var(--muted);
  font-size:22px;
}
.empty-state p{
  font-size:18px;
  color:var(--text);
  margin-bottom:20px;
}

/* article end actions */
.article-end{
  background:var(--paper);
  padding:32px 0;
  border-bottom:1px solid var(--line);
}
.article-action-row{
  display:flex;
  flex-wrap:wrap;
  gap:16px;
  justify-content:space-between;
  align-items:center;
  max-width:760px;
  margin-inline:auto;
}
.article-action-row .btn-primary{
  background:var(--accent);
  color:#fff;
  border:1px solid transparent;
}
.article-action-row .btn-primary:hover{
  background:var(--accent-dark);
}
.article-action-row .back-link{
  color:var(--muted);
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  transition:color .2s ease;
}
.article-action-row .back-link:hover{
  color:var(--accent);
}

/* related */
.related-section{
  background:var(--panel);
  padding:82px 0 70px;
  position:relative;
}
.related-section::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--gold),transparent);
}
.related-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:36px;
  flex-wrap:wrap;
}
.eyebrow{
  font-size:12px;
  letter-spacing:.32em;
  color:var(--gold);
  text-transform:uppercase;
  margin-bottom:8px;
}
.related-head h2{
  color:#fff;
  font-size:clamp(24px,3vw,34px);
  margin:0;
}
.related-head .view-all{
  color:rgba(255,255,255,.6);
  font-size:14px;
  transition:color .2s ease;
}
.related-head .view-all:hover{
  color:var(--gold);
}

.related-list{
  display:flex;
  flex-direction:column;
  gap:18px;
}
.related-item{
  display:flex;
  align-items:stretch;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius);
  overflow:hidden;
  transition:background-color .25s ease,border-color .25s ease,transform .25s ease;
}
.related-item:hover{
  background:rgba(255,255,255,.07);
  border-color:rgba(255,255,255,.18);
  transform:translateY(-2px);
}
.related-thumb{
  flex:none;
  width:220px;
  max-width:32%;
  position:relative;
  overflow:hidden;
  min-height:150px;
}
.media-frame{
  position:relative;
  overflow:hidden;
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background:rgba(23,22,26,.16);
  pointer-events:none;
}
.media-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.related-item:hover .media-frame img{
  transform:scale(1.04);
}
.related-thumb .media-frame{
  width:100%;
  height:100%;
}
.related-thumb .media-frame img{
  width:220px;
  max-width:none;
  height:100%;
}

.related-body{
  flex:1;
  display:flex;
  flex-direction:column;
  justify-content:center;
  padding:26px 28px;
}
.related-tags{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-bottom:10px;
}
.related-tags .tag{
  display:inline-block;
  background:rgba(223,74,42,.18);
  color:#F3B19D;
  font-size:12px;
  line-height:1;
  padding:7px 10px;
  border-radius:6px;
  font-weight:600;
}
.related-tags .date{
  font-size:13px;
  color:rgba(255,255,255,.42);
  font-variant-numeric:tabular-nums;
}
.related-body h3{
  font-size:20px;
  color:#fff;
  line-height:1.35;
  margin-bottom:10px;
  font-weight:600;
  transition:color .25s ease;
}
.related-item:hover .related-body h3{
  color:var(--gold);
}
.related-desc{
  font-size:14px;
  line-height:1.7;
  color:rgba(255,255,255,.62);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:14px;
}
.more-link{
  font-size:14px;
  color:var(--gold);
  display:inline-flex;
  align-items:center;
  gap:6px;
  transition:gap .25s ease,color .2s ease;
}
.more-link:hover{
  color:#fff;
  gap:10px;
}

/* cta */
.cta-panel{
  background:var(--paper);
  border-bottom:1px solid var(--line);
  padding:72px 0;
}
.cta-grid{
  display:grid;
  grid-template-columns:1.2fr .8fr;
  gap:48px;
  align-items:center;
}
.cta-panel h2{
  font-size:clamp(26px,2.6vw,38px);
  margin-bottom:16px;
  letter-spacing:-.02em;
}
.cta-panel p{
  color:var(--muted);
  font-size:16px;
  line-height:1.8;
  margin-bottom:28px;
  max-width:560px;
}
.cta-panel .btn-primary{
  padding:15px 32px;
}
.cta-note{
  font-size:14px;
  color:var(--muted);
  margin-top:14px;
}
.cta-visual{
  background:var(--panel);
  border-radius:var(--radius);
  padding:28px;
  position:relative;
  overflow:hidden;
}
.cta-visual::after{
  content:"";
  position:absolute;
  right:-40px;
  bottom:-40px;
  width:140px;
  height:140px;
  border-radius:50%;
  background:rgba(223,74,42,.16);
}
.cta-visual span{
  display:block;
  font-size:13px;
  color:rgba(255,255,255,.48);
  letter-spacing:.12em;
  margin-bottom:20px;
}
.cta-visual strong{
  display:block;
  color:#fff;
  font-size:22px;
  line-height:1.4;
  font-weight:600;
}
.cta-visual .number-list{
  margin-top:26px;
  display:grid;
  grid-template-columns:1fr;
  gap:12px;
}
.cta-visual .number-list li{
  display:flex;
  align-items:center;
  gap:12px;
  color:rgba(255,255,255,.66);
  font-size:14px;
}
.cta-visual .number-list li::before{
  content:attr(data-num);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:30px;
  height:30px;
  border-radius:50%;
  background:rgba(201,179,122,.14);
  color:var(--gold);
  font-weight:600;
  font-size:13px;
  font-variant-numeric:tabular-nums;
}

/* footer */
.site-footer{
  background:var(--panel);
  border-top:4px solid var(--accent);
}
footer .footer-inner{
  max-width:1180px;
  margin-inline:auto;
  padding-inline:24px;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr .9fr .9fr 1.2fr;
  gap:44px;
  padding:68px 0 44px;
}
.footer-brand .brand{
  color:#fff;
  font-size:24px;
  display:inline-flex;
  align-items:baseline;
  gap:10px;
  margin-bottom:18px;
}
.footer-brand .brand span{
  display:inline;
  color:var(--gold);
  font-size:10px;
  letter-spacing:.24em;
}
.footer-about{
  font-size:14px;
  line-height:1.9;
  color:rgba(255,255,255,.5);
  max-width:320px;
}
.footer-title{
  color:#fff;
  font-size:16px;
  font-weight:600;
  padding-bottom:12px;
  margin-bottom:18px;
  position:relative;
}
.footer-title::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:28px;
  height:2px;
  background:var(--gold);
}
.footer-links li{
  margin-bottom:10px;
}
.footer-links a{
  color:rgba(255,255,255,.56);
  font-size:14px;
  transition:color .2s ease,padding-left .2s ease;
}
.footer-links a:hover{
  color:var(--gold);
  padding-left:4px;
}
.footer-extra p{
  font-size:14px;
  color:rgba(255,255,255,.56);
  line-height:1.9;
  margin-top:0;
}
.footer-copyright{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  align-items:center;
  gap:8px;
  padding:22px 0 26px;
  border-top:1px solid rgba(255,255,255,.1);
}
.footer-copyright p{
  font-size:12px;
  color:rgba(255,255,255,.5);
}
.footer-copyright a{
  color:rgba(255,255,255,.6);
}
.footer-copyright a:hover{
  color:var(--gold);
}

/* responsive */
@media(max-width:992px){
  .footer-grid{
    grid-template-columns:1fr 1fr;
    gap:40px;
    padding:54px 0 36px;
  }
  .cta-grid{
    grid-template-columns:1fr;
    gap:32px;
  }
  .related-thumb{
    width:190px;
    max-width:34%;
  }
  .related-thumb .media-frame img{
    width:190px;
  }
}
@media(max-width:768px){
  .article-lead{
    padding:42px 0 28px;
  }
  .article-title{
    font-size:clamp(24px,7vw,36px);
  }
  .article-copy-wrap{
    padding:36px 0 24px;
  }
  .article-copy{
    font-size:15px;
  }
  .related-section{
    padding:58px 0 46px;
  }
  .related-head{
    align-items:flex-start;
    flex-direction:column;
    margin-bottom:24px;
  }
  .related-item{
    flex-direction:column;
  }
  .related-thumb{
    width:100%;
    max-width:100%;
    height:190px;
  }
  .related-thumb .media-frame img{
    width:100%;
  }
  .related-body{
    padding:22px;
  }
  .cta-panel{
    padding:54px 0;
  }
  .footer-grid{
    grid-template-columns:1fr;
    gap:30px;
    padding:44px 0 28px;
  }
  .footer-copyright{
    flex-direction:column;
    align-items:flex-start;
  }
}
@media(max-width:520px){
  .header-bar{
    height:66px;
  }
  .footer-inner,
  .page-container{
    padding-inline:18px;
  }
  .nav-cta{
    height:48px;
    padding:0 18px;
  }
  .article-meta{
    gap:0;
    font-size:12px;
  }
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms!important;
    transition-duration:.01ms!important;
    scroll-behavior:auto!important;
  }
}

.animate-on-scroll.will-reveal{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .5s ease,transform .5s ease;
}
.animate-on-scroll.in-view{
  opacity:1;
  transform:none;
}
@media(prefers-reduced-motion:reduce){
  .animate-on-scroll.will-reveal{
    opacity:1;
    transform:none;
  }
}

/* roulang page: category1 */
:root{
  --bg:#F5F3EE;
  --paper:#FFFFFF;
  --ink:#17161A;
  --ink-deep:#121116;
  --text:#23222A;
  --muted:#68646E;
  --line:#E2DDD2;
  --accent:#DF4A2A;
  --accent-hover:#C53E1E;
  --gold:#C9B37A;
  --radius:10px;
  --shadow:0 12px 28px rgba(0,0,0,.05);
  --space:96px;
}
*,
*::before,
*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{color:var(--ink);margin:0;font-weight:700;}
h1{font-size:clamp(36px,5vw,64px);line-height:1.15;}
h2{font-size:clamp(24px,3.4vw,42px);line-height:1.2;}
h3{font-size:20px;line-height:1.4;}
p{margin:0 0 16px;}
ul{padding:0;margin:0;list-style:none;}
img{display:block;max-width:100%;}
table{width:100%;border-collapse:collapse;}
a{color:var(--text);text-decoration:none;transition:color .2s ease,border-color .2s ease,background .2s ease;}
a:hover{color:var(--accent);}
button,input,select,textarea{font-family:inherit;}

.container{max-width:1180px;margin:0 auto;padding:0 24px;}
.section{padding:var(--space) 0;}
.section-white{background:var(--paper);}
.section-paper{background:var(--bg);}
.section-dark{background:var(--ink-deep);color:rgba(255,255,255,.82);}
.section-dark h2{color:#fff;}
.section-kicker{font-size:12px;letter-spacing:.2em;color:var(--accent);font-weight:700;margin-bottom:10px;text-transform:uppercase;}
.section-dark .section-kicker{color:var(--gold);}
.section-head{max-width:820px;margin-bottom:48px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head p{margin-top:14px;margin-bottom:0;color:var(--muted);}
.section-dark .section-head p{color:rgba(255,255,255,.68);}

.site-header{
  position:sticky;
  top:0;
  z-index:100;
  height:72px;
  display:flex;
  align-items:center;
  background:rgba(245,243,238,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;height:72px;}
.brand{display:flex;align-items:baseline;gap:9px;font-size:20px;font-weight:800;color:var(--ink);letter-spacing:.2px;line-height:1;white-space:nowrap;}
.brand-mark{font-size:11px;font-weight:800;color:#fff;background:var(--accent);border-radius:6px;padding:5px 7px;letter-spacing:.1em;}
.brand-sub{font-size:10px;font-weight:500;color:var(--muted);letter-spacing:.18em;text-transform:uppercase;}

.nav-toggle{display:none;width:44px;height:44px;border:0;background:transparent;border-radius:8px;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);transition:transform .25s ease,opacity .25s ease;}
.nav-toggle.is-active span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-active span:nth-child(2){opacity:0;}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.nav-links{display:flex;align-items:center;gap:2px;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:10px 12px;
  font-size:15px;
  font-weight:500;
  color:var(--ink);
  line-height:1.2;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:2px;
  height:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease;
}
.nav-link:hover,.nav-link.active{color:var(--accent);}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
.nav-cta-wrap{margin-left:8px;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:10px 20px;
  border-radius:8px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn:active{transform:translateY(1px);}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-hover);color:#fff;transform:translateY(-1px);}
.btn-outline-light{border-color:rgba(255,255,255,.65);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.1);border-color:#fff;color:#fff;transform:translateY(-1px);}
.nav-cta{
  height:40px;
  padding:0 16px;
  border-radius:6px;
  background:var(--accent);
  color:#fff;
  font-size:14px;
}
.nav-cta:hover{background:var(--accent-hover);color:#fff;}

.page-hero{
  position:relative;
  display:flex;
  align-items:center;
  min-height:400px;
  padding:64px 0;
  background:linear-gradient(75deg,rgba(18,17,22,.94) 0%,rgba(23,22,26,.8) 45%,rgba(18,17,22,.42) 100%),url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(18,17,22,.24) 0%,rgba(18,17,22,.08) 60%,rgba(18,17,22,.72) 100%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:860px;}
.eyebrow{font-size:13px;letter-spacing:.2em;color:var(--gold);font-weight:700;margin-bottom:14px;}
.page-hero h1{color:#fff;margin:0 0 22px;}
.hero-lead{color:rgba(255,255,255,.88);font-size:18px;line-height:1.8;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px;}
.hero-chip{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:6px 12px;
  border-radius:999px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.14);
  color:rgba(255,255,255,.85);
  font-size:13px;
}

.reveal{
  transition:opacity .5s ease,transform .5s ease;
}
.js .reveal:not(.is-visible){
  opacity:0;
  transform:translateY(12px);
}
.is-visible{opacity:1;transform:none;}

.split-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;}
.split-content h2{margin-bottom:22px;}
.split-content p{color:var(--muted);font-size:16px;}
.bullet-list li{
  position:relative;
  padding-left:28px;
  margin-bottom:12px;
  color:var(--muted);
}
.bullet-list li::before{
  content:"";
  position:absolute;
  left:2px;
  top:.62em;
  width:9px;
  height:9px;
  border-radius:50%;
  background:var(--accent);
}
.media-frame{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  aspect-ratio:16/10;
  box-shadow:0 18px 36px rgba(18,17,22,.12);
}
.media-frame img{width:100%;height:100%;object-fit:cover;transform:scale(1);transition:transform .6s ease;}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background:rgba(23,22,26,.22);
  pointer-events:none;
}
.media-frame:hover img{transform:scale(1.03);}

.matrix-list{border-top:1px solid var(--line);}
.section-dark .matrix-list{border-top:1px solid rgba(255,255,255,.14);}
.matrix-row{
  display:grid;
  grid-template-columns:80px minmax(0,1fr) auto;
  gap:26px;
  align-items:center;
  padding:28px 14px;
  border-bottom:1px solid var(--line);
  transition:background .2s ease;
}
.section-dark .matrix-row{border-bottom:1px solid rgba(255,255,255,.14);}
.matrix-row:hover{background:#FAF8F2;}
.section-dark .matrix-row:hover{background:rgba(255,255,255,.05);}
.matrix-index{font-size:15px;font-weight:800;color:var(--accent);letter-spacing:.04em;}
.section-dark .matrix-index{color:var(--gold);}
.matrix-title{font-weight:700;margin-bottom:6px;}
.matrix-desc{color:var(--muted);font-size:15px;margin:0;line-height:1.7;}
.section-dark .matrix-desc{color:rgba(255,255,255,.66);}
.matrix-tags{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end;}
.tag{
  display:inline-flex;
  align-items:center;
  padding:5px 12px;
  border-radius:999px;
  background:rgba(245,243,238,.86);
  border:1px solid var(--line);
  color:var(--muted);
  font-size:13px;
  white-space:nowrap;
}
.section-dark .tag{
  background:rgba(255,255,255,.08);
  border-color:rgba(255,255,255,.14);
  color:rgba(255,255,255,.8);
}

.audience-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.audience-card{
  height:100%;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:30px 26px;
  box-shadow:0 1px 2px rgba(0,0,0,.02);
  transition:transform .25s ease,box-shadow .25s ease;
}
.audience-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.audience-icon{
  width:44px;
  height:44px;
  border-radius:9px;
  background:rgba(223,74,42,.1);
  color:var(--accent);
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:800;
  margin-bottom:20px;
}
.audience-card h3{margin-bottom:10px;}
.audience-card p{margin:0;color:var(--muted);font-size:15px;line-height:1.8;}

.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.step-card{
  position:relative;
  height:100%;
  background:#F5F3EE;
  border-radius:var(--radius);
  padding:28px 22px 24px;
  border:1px solid var(--line);
}
.step-num{font-size:13px;font-weight:800;color:var(--accent);letter-spacing:.08em;margin-bottom:14px;display:block;}
.step-card h3{font-size:17px;margin-bottom:10px;}
.step-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.8;}

.table-wrap{
  overflow-x:auto;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--paper);
}
.param-table{min-width:620px;}
.param-table th,.param-table td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--line);font-size:15px;line-height:1.7;}
.param-table th{background:rgba(245,243,238,.8);font-weight:700;color:var(--ink);}
.param-table td{color:var(--muted);}
.param-table tr:last-child th,.param-table tr:last-child td{border-bottom:0;}
.param-table td:first-child{color:var(--text);font-weight:600;}

.faq-container{max-width:860px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);padding:2px 0;}
.faq-toggle{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  width:100%;
  padding:20px 4px;
  background:transparent;
  border:0;
  text-align:left;
  cursor:pointer;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  line-height:1.5;
  transition:color .2s ease;
}
.faq-toggle:hover,.faq-item.open .faq-toggle{color:var(--accent);}
.faq-icon{
  position:relative;
  width:18px;
  height:18px;
  flex:0 0 auto;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:currentColor;
  transition:transform .25s ease;
}
.faq-icon::before{left:0;right:0;top:8px;height:2px;}
.faq-icon::after{top:0;bottom:0;left:8px;width:2px;}
.faq-item.open .faq-icon::after{transform:scaleY(0);}
.faq-panel{overflow:hidden;max-height:0;opacity:0;transition:max-height .3s ease,opacity .3s ease;}
.faq-panel-inner{padding:0 4px 22px;}
.faq-panel p{margin:0;color:var(--muted);font-size:15px;line-height:1.9;}

.cta-section{
  background:var(--ink-deep);
  color:rgba(255,255,255,.85);
}
.cta-card{
  max-width:920px;
  margin:0 auto;
  text-align:center;
  padding:70px 32px;
  border-radius:16px;
  background:linear-gradient(135deg,rgba(223,74,42,.18) 0%,rgba(18,17,22,.2) 50%,rgba(201,179,122,.12) 100%);
  border:1px solid rgba(255,255,255,.1);
}
.cta-card h2{color:#fff;margin-bottom:16px;}
.cta-card p{color:rgba(255,255,255,.7);font-size:17px;margin-bottom:30px;}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;}

.site-footer{
  background:var(--ink-deep);
  color:rgba(255,255,255,.75);
  border-top:4px solid var(--accent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.35fr 1fr 1fr 1.2fr;
  gap:36px;
  padding:56px 0 34px;
}
.footer-brand .brand{color:#fff;}
.footer-brand-sub{color:var(--gold);}
.footer-about{font-size:14px;color:rgba(255,255,255,.55);line-height:1.85;margin:16px 0 0;}
.footer-title{color:#fff;font-size:14px;letter-spacing:.08em;font-weight:700;margin:0 0 16px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:rgba(255,255,255,.6);font-size:14px;line-height:1.6;}
.footer-links a:hover{color:#fff;}
.footer-extra p{font-size:14px;color:rgba(255,255,255,.55);line-height:1.8;margin-top:0;}
.footer-copyright{
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  border-top:1px solid rgba(255,255,255,.12);
  padding:18px 0;
  color:rgba(255,255,255,.45);
  font-size:12px;
}
.footer-copyright p{margin:0;}

@media (max-width:1200px){
  .container{max-width:100%;}
  .nav-link{padding:10px 9px;font-size:14px;}
  .matrix-row{grid-template-columns:64px minmax(0,1fr);}
  .matrix-tags{grid-column:2;justify-content:flex-start;}
}

@media (max-width:991.98px){
  .section{padding:64px 0;}
  .nav-toggle{display:flex;}
  .primary-nav{
    display:none;
    position:fixed;
    top:72px;
    left:0;
    right:0;
    z-index:99;
    background:rgba(245,243,238,.98);
    border-bottom:1px solid var(--line);
    padding:16px 24px 22px;
    box-shadow:0 16px 30px rgba(18,17,22,.08);
  }
  .primary-nav.is-open{display:block;}
  .nav-links{flex-direction:column;align-items:stretch;gap:2px;}
  .nav-link{display:block;padding:13px 8px;font-size:15px;}
  .nav-link::after{left:8px;right:auto;width:28px;}
  .nav-cta-wrap{margin:12px 0 0;}
  .nav-cta{width:100%;justify-content:center;height:44px;}
  .split-grid{grid-template-columns:1fr;gap:40px;}
  .audience-grid{grid-template-columns:1fr 1fr;}
  .steps-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}

@media (max-width:767.98px){
  body{font-size:15px;}
  .section{padding:56px 0;}
  .container{padding:0 20px;}
  .brand{font-size:17px;gap:6px;}
  .brand-mark{font-size:10px;padding:4px 5px;}
  .hero-inner{max-width:100%;}
  .page-hero{min-height:380px;padding:48px 0;}
  .hero-lead{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .matrix-row{grid-template-columns:1fr;gap:12px;padding:22px 10px;}
  .matrix-tags{grid-column:1;}
  .audience-grid{grid-template-columns:1fr;}
  .steps-grid{grid-template-columns:1fr;}
  .cta-card{padding:48px 20px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;padding-top:44px;gap:28px;}
  .footer-copyright{flex-direction:column;align-items:flex-start;}
}

@media (prefers-reduced-motion:reduce){
  *,
  *::before,
  *::after{
    animation:none !important;
    transition:none !important;
  }
  html{scroll-behavior:auto;}
  .js .reveal:not(.is-visible){opacity:1;transform:none;}
}

/* roulang page: category3 */
:root {
    --paper: #F5F3EE;
    --paper-light: #FAF8F2;
    --ink: #17161A;
    --ink-panel: #121116;
    --ink-soft: #23222A;
    --text-secondary: #68646E;
    --text-tertiary: #8B868D;
    --hairline: #E2DDD2;
    --accent: #DF4A2A;
    --accent-hover: #C53E1E;
    --gold: #C9B37A;
    --ink-deep: #0f0e12;
    --radius-card: 10px;
    --shadow-soft: 0 8px 30px rgba(0,0,0,.05);
  }

  .font-cn { font-family: "PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif; }
  .font-data { font-family: "SF Mono","Roboto Mono",Consolas,"Liberation Mono",monospace; font-variant-numeric: tabular-nums; }
  .text-balance { text-wrap: balance; }

  ::selection { background: rgba(223,74,42,.15); }

  body {
    background: var(--paper);
    color: var(--ink-soft);
    font-family: "PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
    -webkit-font-smoothing: antialiased;
  }

  .container-wide { max-width: 1180px; margin-right: auto; margin-left: auto; padding-right: 24px; padding-left: 24px; }

  /* 顶部导航 */
  .site-header {
    position: sticky; top: 0; z-index: 80;
    background: rgba(245,243,238,.92);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    height: 72px;
    border-bottom: 1px solid rgba(226,221,210,.8);
  }
  .site-header .header-row { display: flex; align-items: center; height: 72px; gap: 32px; }
  .brand-primary { font-size: 21px; font-weight: 700; letter-spacing: .02em; color: var(--ink); line-height: 1.2; text-decoration: none; display: inline-flex; align-items: baseline; gap: 8px; }
  .brand-primary:hover { color: var(--accent); }
  .brand-primary .brand-tag { font-size: 10px; letter-spacing: .18em; color: var(--text-secondary); font-weight: 400; }

  .primary-nav { flex: 1; display: flex; justify-content: flex-end; }
  .nav-links { display: flex; align-items: center; list-style: none; margin: 0; padding: 0; gap: 0; }
  .nav-links li { margin: 0 4px; }
  .nav-link {
    display: inline-block; padding: 12px 14px; margin: 0 4px; font-size: 15px; color: var(--ink-soft);
    text-decoration: none; position: relative; font-weight: 400; transition: color .18s ease; letter-spacing: .02em;
  }
  .nav-link::after {
    content: ""; position: absolute; left: 12px; right: 12px; bottom: 2px; height: 2px;
    background: var(--accent); transform: scaleX(0); transform-origin: center; transition: transform .2s ease; border-radius: 2px;
  }
  .nav-link:hover { color: var(--accent); }
  .nav-link:hover::after { transform: scaleX(1); }
  .nav-link.active { color: var(--accent); font-weight: 600; }
  .nav-link.active::after { transform: scaleX(1); }

  .nav-cta {
    margin-left: 12px;
  }
  .btn-primary {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    background: var(--accent); color: #ffffff; font-weight: 600; font-size: 15px;
    padding: 10px 22px; border-radius: 6px; border: none; cursor: pointer;
    text-decoration: none; line-height: 1; transition: all .18s ease; position: relative;
  }
  .btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(223,74,42,.2); }
  .btn-primary:active { transform: translateY(0); }
  .btn-primary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
  .btn-primary .btn-arrow { font-size: 16px; transition: transform .2s ease; }
  .btn-primary:hover .btn-arrow { transform: translateX(3px); }

  .nav-cta.btn-primary { background: var(--accent); padding: 12px 24px; border-radius: 8px; font-size: 15px; }
  .nav-cta.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); }
  .nav-cta.btn-primary:active { transform: translateY(0) scale(.99); }

  /* 汉堡按钮 */
  .hamburger { display: none; background: none; border: 0; width: 44px; height: 44px; position: relative; cursor: pointer; border-radius: 6px; }
  .hamburger .line { position: absolute; left: 12px; right: 12px; height: 2px; background: var(--ink); border-radius: 1px; transition: all .25s ease; }
  .hamburger .line:nth-child(1) { top: 16px; }
  .hamburger .line:nth-child(2) { top: 25px; }
  .mobile-header-cta { display: none; }
  
  /* 页脚 */
  .site-footer { background: var(--ink-deep); color: rgba(255,255,255,.85); }
  .site-footer .footer-top-line { height: 4px; background: var(--accent); }
  .footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; padding: 64px 0 44px; }
  .footer-brand .brand { font-size: 22px; font-weight: 700; color: #fff; text-decoration: none; display: flex; flex-direction: column; gap: 6px; letter-spacing: .02em; }
  .footer-brand .brand span { font-size: 10px; font-weight: 400; letter-spacing: .22em; color: rgba(255,255,255,.4); }
  .footer-about { font-size: 14px; color: rgba(255,255,255,.52); line-height: 1.75; margin-top: 18px; }
  .footer-title { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 20px; letter-spacing: .03em; }
  .footer-links { list-style: none; margin: 0; padding: 0; }
  .footer-links li { margin-bottom: 11px; }
  .footer-links a { color: rgba(255,255,255,.58); font-size: 14px; text-decoration: none; transition: color .2s ease; line-height: 1.7; }
  .footer-links a:hover { color: var(--accent); }
  .footer-copyright { padding: 22px 0 36px; border-top: 1px solid rgba(255,255,255,.08); display: flex; flex-direction: column; gap: 6px; }
  .footer-copyright p { font-size: 12px; color: rgba(255,255,255,.42); margin: 0; }

  /* 分类页 hero */
  .cate-hero {
    position: relative;
    min-height: 380px;
    display: flex; align-items: flex-end;
    background: #17161A;
    overflow: hidden;
    padding-top: 60px;
  }
  .cate-hero .backdrop {
    position: absolute; inset: 0;
    background-image: url("/assets/images/backpic/back-2.png");
    background-size: cover; background-position: center;
    opacity: .5;
  }
  .cate-hero .hero-mask {
    position: absolute; inset: 0;
    background: linear-gradient(75deg, rgba(13,12,15,.94) 10%, rgba(18,17,22,.78) 45%, rgba(18,17,22,.5) 100%);
  }
  .cate-hero .hero-content { position: relative; z-index: 2; width: 100%; padding: 40px 0 55px; }
  .cate-hero .crumb { display: flex; gap: 8px; font-size: 12px; color: rgba(255,255,255,.5); align-items: center; margin: 0 0 18px; padding: 0; list-style: none; }
  .cate-hero .crumb a { color: rgba(255,255,255,.55); text-decoration: none; }
  .cate-hero .crumb a:hover { color: #fff; }
  .cate-hero .crumb .sep { color: rgba(255,255,255,.35); }
  .cate-hero .crumb .current { color: rgba(255,255,255,.8); }
  .cate-hero h1 { font-size: clamp(34px, 4.5vw, 54px); font-weight: 700; line-height: 1.15; color: #fff; margin-top: 0; margin-bottom: 14px; text-wrap: balance; }
  .cate-hero .hero-lead { font-size: clamp(16px, 1.5vw, 19px); line-height: 1.7; color: rgba(255,255,255,.72); max-width: 620px; margin-bottom: 24px; }
  .cate-hero .hero-tags { display: flex; flex-wrap: wrap; gap: 10px; }
  .hero-tag { display: inline-block; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.12); border-radius: 999px; padding: 6px 16px; font-size: 12px; color: rgba(255,255,255,.8); letter-spacing: .04em; }

  /* 图文交替块 */
  .alt-section { padding: 90px 0; background: transparent; }
  .alt-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
  .alt-grid.reverse .alt-media { order: 2; }
  .alt-grid.reverse .alt-text { order: 1; }
  .alt-media { position: relative; border-radius: 10px; overflow: atuto; aspect-ratio: 4/3; background: #17161A; box-shadow: var(--shadow-soft); }
  .alt-media img { width: 100%; height: 100%; object-fit: cover; display: block; }
  .alt-media .overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(16,16,20,.08) 0%, rgba(16,16,20,.4) 100%); }
  .alt-text { padding: 20px 0; }
  .section-eyebrow { font-size: 12px; display: flex; align-items: center; gap: 12px; letter-spacing: .22em; color: var(--accent); font-weight: 600; margin-bottom: 16px; text-transform: uppercase; }
  .section-eyebrow::before { content: ""; display: block; width: 28px; height: 1px; background: var(--accent); }
  .alt-text h2 { font-size: clamp(26px, 3vw, 38px); line-height: 1.2; margin: 0 0 18px; color: var(--ink); font-weight: 700; letter-spacing: -.01em; }
  .alt-text p { font-size: 16px; line-height: 1.8; color: var(--text-secondary); margin-bottom: 14px; }
  .alt-text .stat-badge { display: inline-flex; align-items: center; background: var(--paper-light); padding: 10px 18px; border-radius: 6px; border: 1px solid var(--hairline); margin-top: 12px; gap: 12px; }

  .alt-para { border-left: 3px solid var(--gold); padding: 8px 0 8px 22px; margin: 22px 0 0; }

  /* 参数面板 */
  .param-section { background: var(--ink); padding: 88px 0; color: #fff; }
  .param-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.12); border-radius: 10px; overflow: hidden; }
  .param-cell { background: #17161A; padding: 28px 20px; }
  .param-cell .param-key { font-size: 13px; color: rgba(255,255,255,.5); letter-spacing: .05em; margin-bottom: 14px; }
  .param-cell .param-val { font-size: 16px; font-weight: 600; color: #fff; line-height: 1.5; }
  .param-highlight { font-size: 34px; color: var(--gold); font-weight: 700; font-family: "SF Mono","Roboto Mono",Consolas,monospace; }

  .param-caption { margin-top: 18px; font-size: 14px; color: rgba(255,255,255,.5); line-height: 1.7; }

  /* 流程条 */
  .flow-steps { counter-reset: flow; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 25px; }
  .flow-step { position: relative; padding: 24px 16px 16px; background: var(--paper-light); border-radius: 8px; border: 1px solid var(--hairline); }
  .flow-step .num { font-family: "SF Mono","Roboto Mono",Consolas,monospace; display: block; font-size: 28px; font-weight: 700; color: var(--hairline); letter-spacing: -.02em; margin-bottom: 10px; —webkit-text-stroke: 1px #17161a; }
  .flow-step h4 { font-size: 16px; font-weight: 600; color: var(--ink); margin: 0 0 8px; }
  .flow-step p { font-size: 14px; color: #6a666e; line-height: 1.7; margin: 0; }

  /* FAQ */
  .faq-section { padding: 88px 0; background: rgba(243,241,235,.55); }
  .faq-list { max-width: 900px; }
  .faq-item { border-bottom: 1px solid var(--hairline); padding: 8px 0; }
  .faq-item summary { list-style: none; display: flex; justify-content: space-between; align-items: center; cursor: pointer; padding: 18px 8px; font-size: 17px; font-weight: 600; gap: 24px; transition: color .18s ease; }
  .faq-item summary::-webkit-details-marker { display: none; }
  .faq-item summary:hover { color: var(--accent); }
  .faq-item .faq-icon { display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 28px; flex: 0 0 28px; transition: transform .24s ease; }
  .faq-item .faq-icon::before { content: "+"; font-size: 23px; font-weight: 300; color: var(--accent); line-height: 1; }
  .faq-item[open] .faq-icon { transform: rotate(45deg); }
  .faq-item .answer { padding: 0 8px 22px; line-height: 1.8; color: var(--text-secondary); font-size: 15px; }

  /* CTA */
  .cta-block { position: relative; background: #121116; padding: 90px 0; color: #fff; }
  .cta-inner { display: grid; grid-template-columns: 1.2fr .9fr; gap: 64px; align-items: center; }
  .cta-copy h2 { font-size: clamp(26px, 3vw, 38px); margin: 0 0 20px; line-height: 1.25; }
  .cta-copy p { font-size: 16px; color: rgba(255,255,255,.62); line-height: 1.8; margin: 0 0 22px; }
  .cta-btn-wrap { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 20px; }
  .btn-outline-white { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 13px 26px; border-radius: 6px; border: 1px solid rgba(255,255,255,.3); color: #fff; font-size: 15px; text-decoration: none; font-weight: 500; transition: all .18s ease; }
  .btn-outline-white:hover { border-color: var(--accent); color: var(--accent); }

  /* 基础复位 */
  @layer base {
    *, *::before, *::after { box-sizing: border-box; }
    body { margin: 0; }
    img { display: block; max-width: 100%; }
    a { transition: color .18s ease; }
    button:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
  }

  @media (max-width: 1024px) {
    .nav-links li { margin: 0; }
    .nav-link { padding: 12px 9px; font-size: 14px; margin: 0; }
    .nav-cta { padding: 11px 14px !important; font-size: 14px !important; }
    .primary-nav { gap: 4px; }
    .footer-grid { grid-template-columns: 1fr 1fr 1fr; gap: 30px; }
  }

  @media (max-width: 768px) {
    .site-header .header-row { justify-content: space-between; gap: 8px; }
    .hamburger { display: block; margin-left: auto; z-index: 100; }
    .hamburger.open .line:nth-child(1) { top: 21px; transform: rotate(45deg); }
    .hamburger.open .line:nth-child(2) { top: 21px; transform: rotate(-45deg); }
    .primary-nav { position: fixed; top: 0; left: 0; width: 100%; height: 100vh; height: 100dvh; background: #faf8f3; z-index: 90; margin: 0; padding: 88px 28px 36px; transform: translateX(102%); transition: transform .3s ease-in-out; justify-content: flex-start; overflow-y: auto; }
    .primary-nav.open-nav { transform: translateX(0); }
    .nav-links { flex-direction: column; list-style: none; padding: 0; margin: 0; gap: 6px; width: 100%; }
    .nav-links li { width: 100%; margin-bottom: 4px; }
    .nav-link { width: 100%; padding: 13px 10px; font-size: 16px; border-bottom: 1px solid rgba(226,221,210,.6); display: block; }
    .nav-link::after { display: none; }
    .nav-link.active { color: var(--accent); font-weight: 700; background: rgba(223,74,42,.04); }
    .nav-cta-wrap { position: relative; padding: 16px 0 0; }
    .nav-cta { display: block; width: 100%; margin-left: 0; text-align: center; }

    .mobile-header-cta { display: block; margin-left: 12px; }
    .mobile-header-cta .btn-primary { padding: 9px 14px; font-size: 13px; border-radius: 5px; }
    .site-header .desktop-nav-c { display: none; }

    .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px 28px; padding: 44px 0 36px; }
    .footer-copyright { margin-top: 12px; }

    .alt-grid { grid-template-columns: 1fr; gap: 28px; }
    .alt-grid.reverse .alt-media, .alt-grid.reverse .alt-text { order: 0; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 26px 30px; padding: 40px 0; }
  }

  @media (min-width: 769px) {
    .desktop-nav-c { display: flex; align-items: center; width: 100%; }
    .primary-nav .nav-links { flex-wrap: nowrap; }
    .nav-cta-wrap { display: list-item; }
  }

  @media (max-width: 768px) {
    /* 移动下横版导航收进抽屉 */
    .site-header .desktop-nav-c { display: none; }
    .site-header .mobile-header-cta { display: block; margin-left: auto; margin-right: 8px; }
    .site-header .mobile-header-cta .btn-primary { display: none; }
    .site-header.hide-mobile-cta .mobile-header-cta { display: none; }
    /* 调整抽屉 */
    .primary-nav { display: flex; }
    .nav-links .nav-cta-wrap { list-style: none; position: static; }
  }
  @media (min-width: 769px) {
    .mobile-header-cta { display: none !important; }
  }

  /* 导航不显示汉堡时没有第二 CTA */
  .site-header.has-no-mobile-cta .mobile-header-cta { display: none; }

  /* 桌面导航左侧离 logo 远一点 */
  @media (min-width: 1100px) {
    .site-header .header-row { gap: 25px; }
    .brand-primary { margin-right: 14px; }
  }

/* roulang page: category2 */
:root {
            --paper: #F5F3EE;
            --paper-light: #FAF8F2;
            --ink: #17161A;
            --panel: #121116;
            --text: #23222A;
            --muted: #68646E;
            --line: #E2DDD2;
            --accent: #DF4A2A;
            --accent-dark: #C53E1E;
            --gold: #C9B37A;
            --radius: 10px;
            --shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            --font-num: "SF Mono", "Roboto Mono", "JetBrains Mono", Consolas, monospace;
        }

        *, *::before, *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-sans);
            background: var(--paper);
            color: var(--text);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        h1, h2, h3, h4, p, ul, ol, figure {
            margin: 0;
        }

        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            width: 100%;
            max-width: 1180px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-weight: 600;
            border-radius: 999px;
            padding: 12px 26px;
            border: 1px solid transparent;
            cursor: pointer;
            transition: background .3s ease, transform .2s ease, box-shadow .3s ease;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }

        .btn-primary:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: translateY(1px);
        }

        .btn-ghost {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, .6);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, .12);
            color: #fff;
            border-color: #fff;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(245, 243, 238, .95);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--line);
            min-height: 72px;
            display: flex;
            align-items: center;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            width: 100%;
        }

        .brand {
            display: inline-flex;
            flex-direction: column;
            line-height: 1.2;
            font-size: 21px;
            font-weight: 700;
            letter-spacing: .2px;
            color: var(--text);
        }

        .brand span {
            font-size: 10px;
            font-weight: 500;
            letter-spacing: 2.4px;
            color: var(--muted);
            text-transform: uppercase;
            margin-top: 2px;
        }

        .primary-nav .nav-links {
            display: flex;
            align-items: center;
            gap: 22px;
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            padding: 6px 0;
            transition: color .2s;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--accent);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .3s ease;
        }

        .nav-link:hover {
            color: var(--accent);
        }

        .nav-link:hover::after {
            transform: scaleX(1);
        }

        .nav-link.active {
            color: var(--accent);
            font-weight: 600;
        }

        .nav-link.active::after {
            transform: scaleX(1);
        }

        .nav-cta {
            height: 44px;
            padding: 0 24px;
            line-height: 44px;
            font-size: 15px;
            background: var(--accent);
            color: #fff;
            border-radius: 8px;
        }

        .nav-cta:hover {
            background: var(--accent-dark);
        }

        .menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border: none;
            background: transparent;
            padding: 8px;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            cursor: pointer;
        }

        .menu-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: transform .3s, opacity .3s;
        }

        .menu-toggle[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .menu-toggle[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }

        .menu-toggle[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .page-hero {
            position: relative;
            min-height: 380px;
            background: var(--panel);
            color: #fff;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: .45;
        }

        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(18, 17, 22, .92) 0%, rgba(18, 17, 22, .68) 48%, rgba(18, 17, 22, .45) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            padding-top: 64px;
            padding-bottom: 64px;
        }

        .hero-breadcrumb {
            font-size: 12px;
            color: rgba(255, 255, 255, .64);
            margin-bottom: 20px;
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .hero-breadcrumb a:hover {
            color: #fff;
        }

        .hero-kicker {
            font-size: 12px;
            letter-spacing: 3.2px;
            text-transform: uppercase;
            color: var(--gold);
            margin-bottom: 18px;
            display: block;
            font-weight: 600;
        }

        .page-hero h1 {
            font-size: clamp(38px, 5.2vw, 60px);
            line-height: 1.1;
            font-weight: 700;
            margin-bottom: 18px;
            max-width: 720px;
        }

        .hero-desc {
            max-width: 640px;
            font-size: 17px;
            color: rgba(255, 255, 255, .86);
            line-height: 1.8;
            margin-bottom: 32px;
        }

        .hero-ctas {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .section {
            padding: 96px 0;
        }

        .paper-bg {
            background: var(--paper);
        }

        .light-bg {
            background: var(--paper-light);
        }

        .dark-bg {
            background: var(--panel);
            color: #fff;
        }

        .split-grid {
            display: grid;
            grid-template-columns: 1.02fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .split-grid.reverse .split-media {
            order: 2;
        }

        .split-content .section-kicker {
            font-size: 12px;
            letter-spacing: 3px;
            text-transform: uppercase;
            color: var(--accent);
            font-weight: 600;
            display: block;
            margin-bottom: 12px;
        }

        .split-content h2 {
            font-size: clamp(24px, 3.4vw, 40px);
            line-height: 1.24;
            font-weight: 700;
            color: var(--text);
            margin: 12px 0 18px;
            letter-spacing: .2px;
        }

        .split-content p {
            color: var(--muted);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .feature-list {
            list-style: none;
            padding: 0;
            margin: 18px 0 0;
        }

        .feature-list li {
            position: relative;
            padding: 12px 0 12px 34px;
            border-bottom: 1px solid var(--line);
            font-size: 15px;
            color: var(--text);
            line-height: 1.7;
        }

        .feature-list li:last-child {
            border-bottom: 0;
        }

        .feature-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 22px;
            width: 18px;
            height: 2px;
            background: var(--gold);
            border-radius: 2px;
        }

        .split-media {
            position: relative;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
            aspect-ratio: 4 / 3;
            background: #ddd;
        }

        .split-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .split-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(145deg, rgba(23, 22, 26, .12), rgba(23, 22, 26, .25) 90%);
            pointer-events: none;
            border-radius: 10px;
        }

        .split-media:hover img {
            transform: scale(1.03);
        }

        .table-section {
            border-top: 1px solid var(--line);
        }

        .section-head {
            max-width: 680px;
            margin-bottom: 42px;
        }

        .section-head .section-kicker {
            font-size: 12px;
            letter-spacing: 3px;
            text-transform: uppercase;
            color: var(--accent);
            font-weight: 600;
            display: block;
            margin-bottom: 12px;
        }

        .section-head h2 {
            font-size: clamp(24px, 3.4vw, 40px);
            line-height: 1.22;
            font-weight: 700;
            color: var(--text);
            letter-spacing: .2px;
            margin: 10px 0 12px;
        }

        .section-head p {
            color: var(--muted);
            font-size: 16px;
            line-height: 1.8;
        }

        .module-metrics {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 34px;
        }

        .mini-metric {
            background: var(--paper-light);
            border: 1px solid var(--line);
            border-radius: 10px;
            padding: 22px 26px;
            flex: 1 1 160px;
            min-width: 160px;
        }

        .mini-metric .num {
            font-family: var(--font-num);
            font-size: 34px;
            font-weight: 700;
            color: var(--text);
            line-height: 1;
        }

        .mini-metric .nu-gray {
            color: var(--muted);
            font-size: 15px;
            margin-top: 10px;
            line-height: 1.5;
        }

        .table-wrap {
            overflow-x: auto;
            border-radius: 10px;
            border: 1px solid var(--line);
            background: #fff;
            box-shadow: var(--shadow);
        }

        .table-wrap table {
            width: 100%;
            border-collapse: collapse;
            min-width: 680px;
            font-size: 14px;
        }

        .table-wrap th {
            background: var(--ink);
            color: #fff;
            text-align: left;
            padding: 16px 20px;
            font-weight: 600;
            letter-spacing: .3px;
        }

        .table-wrap td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--line);
            vertical-align: top;
            color: var(--text);
        }

        .table-wrap tr:nth-child(even) td {
            background: var(--paper-light);
        }

        .table-wrap tr:last-child td {
            border-bottom: 0;
        }

        .entry-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .entry-card {
            position: relative;
            display: block;
            padding: 30px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 10px;
            transition: transform .25s, box-shadow .25s;
        }

        .entry-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }

        .entry-card .card-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--accent);
            color: #fff;
            border-radius: 8px;
            margin-bottom: 20px;
            font-weight: 700;
        }

        .entry-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .entry-card p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
        }

        .entry-card .entry-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--accent);
        }

        .faq-section {
            background: var(--paper-light);
        }

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--line);
            transition: background .3s;
        }

        .faq-item:first-child {
            border-top: 1px solid var(--line);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            background: transparent;
            border: none;
            padding: 22px 50px 22px 0;
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            position: relative;
            line-height: 1.6;
            transition: color .2s;
        }

        .faq-question:hover {
            color: var(--accent);
        }

        .faq-icon {
            position: absolute;
            right: 4px;
            top: 50%;
            width: 18px;
            height: 18px;
            transform: translateY(-50%);
        }

        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            background: var(--accent);
            border-radius: 2px;
            transition: transform .3s ease;
        }

        .faq-icon::before {
            width: 18px;
            height: 2px;
            top: 8px;
            left: 0;
        }

        .faq-icon::after {
            width: 2px;
            height: 18px;
            left: 8px;
            top: 0;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .3s;
        }

        .faq-answer-inner {
            padding: 0 52px 24px 0;
            font-size: 15px;
            line-height: 1.8;
            color: var(--muted);
        }

        .faq-item.active .faq-icon::after {
            transform: rotate(90deg);
            opacity: 0;
        }

        .faq-item.active .faq-answer {
            max-height: 500px;
        }

        .cta-panel {
            background: var(--panel);
            color: #fff;
            border-radius: 14px;
            padding: 56px 58px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            position: relative;
            overflow: hidden;
        }

        .cta-panel::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            opacity: .18;
        }

        .cta-panel>* {
            position: relative;
            z-index: 1;
        }

        .cta-title {
            font-size: clamp(22px, 3vw, 32px);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 10px;
        }

        .cta-desc {
            color: rgba(255, 255, 255, .72);
            font-size: 15px;
            max-width: 560px;
        }

        .cta-panel .btn-primary {
            font-size: 16px;
            padding: 16px 34px;
        }

        .site-footer {
            background: var(--ink);
            color: rgba(255, 255, 255, .72);
            padding: 56px 0 0;
            margin-top: 0;
            border-top: 4px solid var(--accent);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.3fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 42px;
        }

        .footer-brand .brand {
            color: #fff;
            font-size: 22px;
        }

        .footer-brand .brand span {
            color: rgba(255, 255, 255, .45);
        }

        .footer-about {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .55);
            margin: 18px 0 0;
            max-width: 280px;
        }

        .footer-title {
            color: rgba(255, 255, 255, .9);
            font-size: 15px;
            font-weight: 600;
            margin: 0 0 16px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, .55);
            font-size: 14px;
            transition: color .2s;
        }

        .footer-links a:hover {
            color: #fff;
        }

        .footer-extra p {
            font-size: 14px;
            color: rgba(255, 255, 255, .55);
            line-height: 1.8;
            margin: 0;
        }

        .footer-copyright {
            border-top: 1px solid rgba(255, 255, 255, .12);
            padding: 18px 0 24px;
            display: flex;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
        }

        .footer-copyright p {
            font-size: 12px;
            color: rgba(255, 255, 255, .4);
            margin: 0;
        }

        .reveal {
            opacity: 0;
            transform: translateY(14px);
            transition: opacity .4s ease, transform .4s ease;
        }

        .reveal.in-view {
            opacity: 1;
            transform: translateY(0);
        }

        @media (max-width: 1023px) {
            .split-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .split-grid.reverse .split-media {
                order: 0;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }

            .entry-grid {
                grid-template-columns: 1fr 1fr;
            }

            .cta-panel {
                flex-direction: column;
                align-items: flex-start;
                padding: 36px 32px;
            }
        }

        @media (max-width: 891px) {
            .site-header {
                min-height: 64px;
            }

            .menu-toggle {
                display: flex;
            }

            .primary-nav {
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--paper);
                border-bottom: 1px solid var(--line);
                box-shadow: 0 14px 24px rgba(0, 0, 0, .08);
                opacity: 0;
                pointer-events: none;
                transform: translateY(-8px);
                transition: opacity .25s, transform .25s;
            }

            .primary-nav.open {
                opacity: 1;
                pointer-events: auto;
                transform: translateY(0);
            }

            .primary-nav .nav-links {
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 18px 20px 24px;
            }

            .nav-links li {
                width: 100%;
                border-bottom: 1px solid var(--line);
            }

            .nav-links li:last-child {
                border-bottom: none;
            }

            .nav-link {
                display: block;
                padding: 14px 4px;
                font-size: 14px;
            }

            .nav-link::after {
                display: none;
            }

            .nav-links .nav-cta-wrap {
                margin-top: 18px;
                border-bottom: none;
            }

            .nav-cta {
                display: block;
                width: 100%;
                text-align: center;
                line-height: 46px;
                height: 46px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }

            .page-hero {
                min-height: 340px;
            }

            .hero-content {
                padding-top: 44px;
                padding-bottom: 44px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-brand .footer-about {
                max-width: none;
            }
        }

        @media (max-width: 639px) {
            .entry-grid {
                grid-template-columns: 1fr;
            }

            .module-metrics {
                flex-direction: column;
            }

            .table-wrap {
                border-left: 0;
                border-right: 0;
                border-radius: 0;
            }

            .cta-panel {
                padding: 32px 22px;
                border-radius: 10px;
            }

            .container {
                padding-left: 18px;
                padding-right: 18px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *, *::before, *::after {
                animation-duration: .01ms !important;
                transition-duration: .01ms !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: category4 */
:root {
            --paper: #F5F3EE;
            --ink: #17161A;
            --panel: #121116;
            --body-text: #23222A;
            --muted: #68646E;
            --hairline: #E2DDD2;
            --vermilion: #DF4A2A;
            --vermilion-hover: #C53E1E;
            --gold: #C9B37A;
            --card-radius: 10px;
            --shadow-soft: 0 6px 24px rgba(0, 0, 0, 0.06);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            background-color: var(--paper);
            color: var(--body-text);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: 1180px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .primary-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 72px;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.04);
            transition: box-shadow 0.3s ease;
        }

        .nav-inner {
            max-width: 1280px;
            margin: 0 auto;
            height: 72px;
            padding: 0 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
        }

        .site-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: var(--ink);
            line-height: 1.2;
            letter-spacing: -0.3px;
            white-space: nowrap;
        }

        .site-brand .brand-mark {
            width: 34px;
            height: 34px;
            background: var(--ink);
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 13px;
            font-weight: 800;
            letter-spacing: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 2px;
        }

        .nav-links li {
            position: relative;
        }

        .nav-link {
            display: block;
            padding: 10px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--body-text);
            border-bottom: 2px solid transparent;
            transition: color 0.25s ease, border-color 0.25s ease;
            white-space: nowrap;
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--vermilion);
            border-bottom-color: var(--vermilion);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            font-size: 15px;
            border: 0;
            cursor: pointer;
            border-radius: 8px;
            transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
            white-space: nowrap;
        }

        .btn:active {
            transform: translateY(1px);
        }

        .btn:focus-visible {
            outline: 2px solid var(--vermilion);
            outline-offset: 2px;
        }

        .btn-primary {
            background-color: var(--vermilion);
            color: #fff;
            padding: 12px 26px;
            box-shadow: 0 3px 12px rgba(223, 74, 42, 0.18);
        }

        .btn-primary:hover {
            background-color: var(--vermilion-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(223, 74, 42, 0.22);
        }

        .nav-cta {
            height: 42px;
            padding: 0 22px;
            margin-left: 10px;
            font-size: 14px;
            border-radius: 7px;
            background: var(--vermilion);
            color: #fff;
            display: inline-flex;
            align-items: center;
            font-weight: 600;
        }

        .nav-cta:hover {
            background: var(--vermilion-hover);
            transform: translateY(-1px);
        }

        .hamburger {
            display: none;
            background: none;
            border: 0;
            cursor: pointer;
            padding: 10px;
            flex-direction: column;
            gap: 5px;
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--ink);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .page-hero {
            padding-top: 72px;
            min-height: 360px;
            background-color: #2a2725;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            position: relative;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg, rgba(18, 17, 22, 0.88) 20%, rgba(18, 17, 22, 0.62) 55%, rgba(18, 17, 22, 0.35) 100%);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 700px;
            padding: 64px 0 54px;
            color: #fff;
        }

        .hero-breadcrumb {
            font-size: 12px;
            letter-spacing: 0.6px;
            color: rgba(255, 255, 255, 0.66);
            margin-bottom: 18px;
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .hero-breadcrumb a {
            color: rgba(255, 255, 255, 0.66);
            border-bottom: 1px solid transparent;
            transition: color 0.25s, border-color 0.25s;
        }

        .hero-breadcrumb a:hover {
            color: #fff;
            border-color: rgba(255, 255, 255, 0.4);
        }

        .hero-breadcrumb .sep {
            opacity: 0.4;
        }

        .page-hero h1 {
            font-size: clamp(34px, 4.6vw, 56px);
            font-weight: 700;
            line-height: 1.15;
            letter-spacing: 0;
            color: #fff;
            margin-bottom: 18px;
        }

        .page-hero .hero-desc {
            font-size: 16px;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.82);
            max-width: 620px;
        }

        .section {
            padding: 90px 0;
        }

        .section-paper {
            background-color: var(--paper);
        }

        .section-white {
            background-color: #FCFBF8;
        }

        .section-dark {
            background-color: var(--panel);
            color: #fff;
        }

        .section-header {
            margin-bottom: 48px;
        }

        .eyebrow {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 2.4px;
            text-transform: uppercase;
            color: var(--vermilion);
            margin-bottom: 12px;
        }

        .section-title {
            font-size: clamp(24px, 3.2vw, 40px);
            font-weight: 700;
            line-height: 1.25;
            color: var(--ink);
            letter-spacing: -0.4px;
        }

        .section-dark .section-title {
            color: #fff;
        }

        .section-dark .section-desc {
            color: rgba(255, 255, 255, 0.72);
        }

        .section-desc {
            font-size: 15px;
            line-height: 1.75;
            color: var(--muted);
            max-width: 760px;
            margin-top: 8px;
        }

        .feature-grid {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .feature-row {
            display: grid;
            grid-template-columns: 90px 1fr 1fr;
            gap: 28px;
            align-items: center;
            padding: 32px 12px 32px 0;
            border-bottom: 1px solid var(--hairline);
            transition: background-color 0.3s ease;
        }

        .feature-row:hover {
            background-color: var(--paper);
        }

        .feature-row:first-child {
            border-top: 1px solid var(--hairline);
        }

        .feature-order {
            font-family: "SF Mono", "Roboto Mono", Consolas, monospace;
            font-size: 15px;
            font-weight: 500;
            color: var(--gold);
            letter-spacing: 0.8px;
        }

        .feature-main h3 {
            font-size: 20px;
            font-weight: 650;
            color: var(--ink);
            margin-bottom: 8px;
        }

        .feature-main p {
            font-size: 14px;
            line-height: 1.72;
            color: var(--muted);
            max-width: 480px;
        }

        .feature-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            justify-content: flex-end;
        }

        .tag {
            display: inline-block;
            font-size: 12px;
            padding: 4px 13px;
            background: #ede8df;
            color: var(--body-text);
            border-radius: 20px;
            font-weight: 500;
            letter-spacing: 0.4px;
        }

        .tag-dark {
            background: rgba(255, 255, 255, 0.09);
            color: rgba(255, 255, 255, 0.85);
        }

        .tag-outline {
            background: transparent;
            border: 1px solid #d8d2c5;
        }

        .split-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 72px;
            align-items: center;
        }

        .split-block.reverse {
            direction: rtl;
        }

        .split-block.reverse>* {
            direction: ltr;
        }

        .split-media {
            border-radius: 10px;
            overflow: hidden;
            position: relative;
            box-shadow: var(--shadow-soft);
        }

        .split-media img {
            width: 100%;
            height: 360px;
            object-fit: cover;
        }

        .split-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(23, 22, 26, 0.08), rgba(23, 22, 26, 0.24));
            pointer-events: none;
        }

        .split-content h3 {
            font-size: 25px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.35;
            margin-bottom: 14px;
        }

        .split-content p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--muted);
            margin-bottom: 16px;
        }

        .check-list {
            margin-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .check-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--body-text);
            line-height: 1.65;
        }

        .check-list li i {
            display: inline-flex;
            width: 20px;
            height: 20px;
            background: rgba(201, 179, 122, 0.18);
            border-radius: 50%;
            color: #a4864a;
            font-weight: 700;
            font-size: 12px;
            align-items: center;
            justify-content: center;
            font-style: normal;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .params-block {
            border: 1px solid var(--hairline);
            border-radius: 10px;
            overflow: hidden;
            background: #fff;
        }

        .params-table {
            width: 100%;
            border-collapse: collapse;
        }

        .params-table th {
            background: var(--ink);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            text-align: left;
            padding: 16px 22px;
            letter-spacing: 0.5px;
        }

        .params-table td {
            padding: 20px 22px;
            font-size: 14px;
            border-bottom: 1px solid #ece7de;
            color: var(--body-text);
            vertical-align: top;
        }

        .params-table tr:last-child td {
            border-bottom: 0;
        }

        .params-table tr:nth-child(even) td {
            background: #FBF9F4;
        }

        .params-label {
            font-weight: 600;
            color: var(--ink);
            width: 32%;
            white-space: nowrap;
        }

        .card-scroll {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        .card-item {
            background: #fff;
            border-radius: 10px;
            border: 1px solid #ece7df;
            padding: 28px;
            transition: transform 0.35s ease, box-shadow 0.35s ease;
        }

        .card-item:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.07);
        }

        .card-icon {
            width: 42px;
            height: 42px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            background: rgba(223, 74, 42, 0.1);
            color: var(--vermilion);
            margin-bottom: 18px;
        }

        .card-item h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 10px;
        }

        .card-item p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.65;
        }

        .faq-section {
            background: #FBF9F4;
        }

        .faq-list {
            max-width: 850px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--hairline);
        }

        .faq-item+.faq-item {
            margin-top: 0;
        }

        .faq-q {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            text-align: left;
            background: none;
            border: 0;
            padding: 22px 4px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            transition: color 0.25s;
            gap: 20px;
        }

        .faq-q:hover {
            color: var(--vermilion);
        }

        .faq-q .plus-icon {
            font-size: 22px;
            font-weight: 300;
            color: var(--vermilion);
            transition: transform 0.35s ease;
            flex-shrink: 0;
            line-height: 1;
        }

        .faq-item.open .plus-icon {
            transform: rotate(45deg);
        }

        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            padding: 0 28px 0 4px;
        }

        .faq-a-inner {
            padding-bottom: 22px;
            font-size: 14.5px;
            line-height: 1.85;
            color: var(--muted);
        }

        .cta-block {
            background-color: var(--panel);
            padding: 84px 0;
            position: relative;
        }

        .cta-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .cta-copy h2 {
            color: #fff;
            font-size: clamp(22px, 2.8vw, 34px);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .cta-copy p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14.5px;
            line-height: 1.8;
        }

        .contact-info {
            margin-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .contact-info span {
            color: rgba(255, 255, 255, 0.65);
            font-size: 13px;
        }

        .form-card {
            background: #fff;
            border-radius: 12px;
            padding: 32px;
            box-shadow: 0 18px 40px rgba(0, 0, 0, 0.18);
        }

        .form-card label {
            display: block;
            font-size: 13px;
            color: var(--muted);
            margin-bottom: 4px;
            font-weight: 500;
        }

        .form-card input,
        .form-card select,
        .form-card textarea {
            width: 100%;
            border: 1px solid #e8e3da;
            border-radius: 6px;
            padding: 12px 14px;
            font-size: 14px;
            color: var(--ink);
            font-family: inherit;
            background: #fdfcf9;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
            margin-bottom: 18px;
            outline: none;
        }

        .form-card input:focus,
        .form-card select:focus,
        .form-card textarea:focus {
            border-color: var(--vermilion);
            box-shadow: 0 0 0 3px rgba(223, 74, 42, 0.1);
            background: #fff;
        }

        .form-card textarea {
            min-height: 90px;
            resize: vertical;
        }

        .form-card .btn-submit {
            width: 100%;
            height: 48px;
            background: var(--vermilion);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border: 0;
            border-radius: 7px;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
        }

        .form-card .btn-submit:hover {
            background: var(--vermilion-hover);
            transform: translateY(-1px);
        }

        .site-footer {
            background: #111014;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-topline {
            height: 4px;
            background: var(--vermilion);
        }

        .footer-inner {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 44px;
            padding: 58px 0 44px;
        }

        .footer-brand .brand {
            display: inline-flex;
            flex-direction: column;
            font-size: 20px;
            color: #fff;
            font-weight: 700;
            letter-spacing: 0;
            margin-bottom: 16px;
        }

        .footer-brand .brand span {
            font-size: 10px;
            color: rgba(255, 255, 255, 0.4);
            letter-spacing: 2.4px;
            margin-top: 3px;
        }

        .footer-about {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.45);
            margin-top: 14px;
        }

        .footer-title {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 18px;
        }

        .footer-column ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-column ul a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            transition: color 0.25s;
        }

        .footer-column ul a:hover {
            color: var(--gold);
        }

        .footer-note {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.35);
            line-height: 1.8;
            margin-top: 0;
        }

        .copyright-bar {
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            padding: 18px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }

        .copyright-bar p {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
        }

        @media (max-width: 992px) {
            .nav-links .nav-link {
                padding: 10px 9px;
                font-size: 13px;
            }
            .nav-cta {
                padding: 0 15px;
                font-size: 13px;
                margin-left: 4px;
            }
            .feature-row {
                grid-template-columns: 70px 1fr;
            }
            .feature-tags {
                justify-content: flex-start;
                grid-column: 2;
            }
            .card-scroll {
                grid-template-columns: repeat(2, 1fr);
            }
            .split-block {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .cta-inner {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .nav-inner {
                padding: 0 16px;
            }
        }

        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px 24px;
                box-shadow: 0 18px 30px rgba(0, 0, 0, 0.1);
                justify-content: flex-start;
                gap: 16px;
                transform: translateY(-12px);
                visibility: hidden;
                opacity: 0;
                transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
                border-bottom: 3px solid var(--vermilion);
            }
            .nav-links.open {
                transform: translateY(0);
                visibility: visible;
                opacity: 1;
            }
            .nav-links li {
                width: 100%;
            }
            .nav-link {
                padding: 8px 0;
                font-size: 15px;
                border-bottom: 0;
                display: block;
                border-left: 2px solid transparent;
                padding-left: 12px;
            }
            .nav-link:hover,
            .nav-link.active {
                border-left-color: var(--vermilion);
                border-bottom: 0;
                color: var(--vermilion);
            }
            .nav-cta {
                margin-top: 14px;
                width: 100%;
                height: 48px;
                justify-content: center;
                border-radius: 8px;
                background: var(--vermilion);
                color: #fff;
                margin-left: 0;
            }
            .page-hero {
                min-height: 340px;
                padding-top: 72px;
            }
            .section {
                padding: 64px 0;
            }
            .feature-row {
                grid-template-columns: 60px 1fr;
                padding: 28px 0;
            }
            .feature-order {
                font-size: 13px;
            }
            .feature-main h3 {
                font-size: 18px;
            }
            .card-scroll {
                grid-template-columns: 1fr;
            }
            .logo-iframe-wrap {
                overflow-x: auto;
            }
            .params-table th,
            .params-table td {
                padding: 14px;
            }
            .split-media img {
                height: 240px;
            }
            .cta-inner {
                gap: 28px;
            }
            .footer-inner {
                grid-template-columns: 1fr;
            }
            .footer-extra {
                grid-column: 1;
            }
            .copyright-bar {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 480px) {
            .container {
                padding: 0 18px;
            }
            .site-brand {
                font-size: 18px;
            }
            .feature-row {
                grid-template-columns: 1fr;
                gap: 6px;
            }
            .feature-tags {
                grid-column: 1;
            }
            .faq-q {
                font-size: 14.5px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                transition-duration: 0.01ms !important;
                animation-duration: 0.01ms !important;
            }
        }