/* roulang page: index */
:root {
  --primary: #0D1F1C;
  --primary-hover: #16352F;
  --accent: #C29B5A;
  --accent-hover: #D4AF73;
  --bg: #FBFAF7;
  --bg-alt: #F7F6F2;
  --surface: #FFFFFF;
  --surface-alt: #F1EFEA;
  --text: #1D2624;
  --text-secondary: #5D6C68;
  --text-muted: #9AA6A2;
  --border: #E8E3D9;
  --border-dark: rgba(255, 255, 255, .14);
  --success: #2E7D5B;
  --warning: #B47B2A;
  --error: #B03A2E;
  --info: #2F6B7A;
  --radius-card: 12px;
  --radius-btn: 4px;
  --radius-pill: 999px;
  --shadow: 0 8px 30px rgba(13, 31, 28, .08);
  --shadow-hover: 0 12px 36px rgba(13, 31, 28, .14);
  --container: 1200px;
  --transition: .25s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--text); text-decoration: none; transition: color var(--transition); }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 32px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: .02em;
  line-height: 1;
}
.btn-primary { background: var(--accent); color: var(--primary); border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); box-shadow: 0 8px 20px rgba(13, 31, 28, .18); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(1px); }
.btn-outline-light { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .5); }
.btn-outline-light:hover { background: rgba(255, 255, 255, .08); border-color: rgba(255, 255, 255, .8); }
.btn-outline-dark { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline-dark:hover { background: rgba(13, 31, 28, .05); }
.eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--accent);
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 12px;
}
.section { padding: 88px 0; }
.section-head { margin-bottom: 48px; max-width: 640px; }
.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--text);
}
.section-head p { margin-top: 12px; color: var(--text-secondary); font-size: 15px; }
.badge {
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding: 0 10px;
  font-size: 12px;
  color: var(--primary);
  border: 1px solid rgba(13, 31, 28, .3);
  border-radius: var(--radius-pill);
  line-height: 1;
  white-space: nowrap;
  transition: all var(--transition);
}
.badge:hover { border-color: var(--accent); color: var(--accent); }
/* TopBar */
.topbar {
  background: var(--primary);
  color: rgba(255, 255, 255, .72);
  font-size: 12px;
  height: 36px;
  display: flex;
  align-items: center;
}
.topbar-inner { display: flex; justify-content: space-between; align-items: center; width: 100%; }
.topbar-inner .tb-left { display: flex; align-items: center; gap: 8px; }
.topbar-inner .tb-right { display: flex; align-items: center; gap: 20px; }
.topbar-inner a { color: rgba(255, 255, 255, .72); font-size: 12px; }
.topbar-inner a:hover { color: var(--accent); }
/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 31, 28, .9);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  transition: background .2s ease;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-mark {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.brand-mark svg { width: 30px; height: 30px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text .brand-name { font-size: 20px; font-weight: 700; color: #fff; letter-spacing: .01em; }
.brand-text .brand-sub { font-size: 10px; letter-spacing: .2em; color: var(--accent); margin-top: 2px; text-transform: uppercase; }
.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav ul { display: flex; align-items: center; gap: 6px; }
.main-nav a {
  display: block;
  padding: 24px 14px;
  font-size: 15px;
  letter-spacing: .02em;
  color: rgba(255, 255, 255, .9);
  position: relative;
  transition: color var(--transition);
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform .25s ease;
  transform-origin: center;
}
.main-nav a:hover::after { transform: scaleX(1); }
.main-nav a.active { color: #fff; }
.main-nav a.active::after { transform: scaleX(1); }
.header-cta {
  display: inline-flex;
  align-items: center;
  height: 38px;
  padding: 0 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  background: var(--accent);
  border-radius: var(--radius-btn);
  margin-left: 12px;
  transition: all var(--transition);
}
.header-cta:hover { background: var(--accent-hover); box-shadow: 0 4px 14px rgba(194, 155, 90, .35); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; width: 40px; height: 40px; position: relative; }
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
  margin: 5px auto;
  transition: all .3s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
/* Hero */
.hero {
  position: relative;
  min-height: 86vh;
  display: flex;
  align-items: center;
  background: var(--primary);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  animation: heroBreath 6s ease-in-out infinite alternate;
}
@keyframes heroBreath {
  0% { transform: scale(1); }
  100% { transform: scale(1.04); }
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--primary) 0%, rgba(13, 31, 28, .74) 42%, rgba(13, 31, 28, .2) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  padding: 80px 32px;
}
.hero-copy { max-width: 560px; }
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--accent);
  border: 1px solid rgba(194, 155, 90, .4);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 24px;
  background: rgba(13, 31, 28, .4);
}
.hero-copy h1 {
  font-size: 48px;
  font-weight: 700;
  line-height: 1.25;
  color: #fff;
  letter-spacing: -.01em;
  margin-bottom: 20px;
}
.hero-copy h1 .hl { color: var(--accent); position: relative; }
.hero-sub {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .72);
  margin-bottom: 32px;
  max-width: 460px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 40px; }
.hero-meta { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }
.hero-meta .meta-item {
  display: flex;
  flex-direction: column;
  border-left: 1px solid rgba(255, 255, 255, .25);
  padding-left: 16px;
}
.hero-meta .meta-item .num { font-size: 28px; font-weight: 200; color: var(--accent); line-height: 1.2; font-family: "Inter", "Helvetica Neue", sans-serif; }
.hero-meta .meta-item .label { font-size: 12px; color: rgba(255, 255, 255, .6); }
.hero-scroll {
  position: absolute;
  right: 32px;
  bottom: 40px;
  writing-mode: vertical-rl;
  font-size: 11px;
  letter-spacing: .3em;
  color: rgba(255, 255, 255, .4);
  display: flex;
  align-items: center;
  gap: 12px;
}
.hero-scroll::after {
  content: "";
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}
/* Quick Entrance */
.quick-section { padding: 0 0 64px; background: var(--bg); }
.quick-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: -32px;
  position: relative;
  z-index: 3;
}
.quick-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 96px;
  transition: all var(--transition);
  box-shadow: var(--shadow);
}
.quick-card:hover { background: rgba(194, 155, 90, .06); border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.quick-card .qc-left { display: flex; align-items: center; gap: 16px; }
.quick-card .qc-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
  transition: all var(--transition);
}
.quick-card:hover .qc-icon { background: var(--accent); color: var(--primary); }
.quick-card .qc-icon svg { width: 22px; height: 22px; }
.quick-card .qc-title { font-size: 16px; font-weight: 600; color: var(--text); }
.quick-card .qc-arrow { color: var(--text-muted); transition: all var(--transition); font-size: 20px; }
.quick-card:hover .qc-arrow { transform: translateX(4px); color: var(--accent); }
/* Services */
.services { background: var(--bg); padding: 88px 0; }
.services-header { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 48px; gap: 40px; flex-wrap: wrap; }
.services-header .section-head { margin-bottom: 0; }
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--border); }
.service-item {
  padding: 32px 24px 24px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  transition: all var(--transition);
  position: relative;
}
.service-item:first-child { border-left: 1px solid var(--border); }
.service-item:hover { background: rgba(13, 31, 28, .03); }
.service-item:hover .service-num { color: var(--accent); }
.service-num { font-size: 44px; font-weight: 200; color: var(--text-muted); line-height: 1.1; transition: color var(--transition); font-family: "Inter", "Helvetica Neue", sans-serif; letter-spacing: -.02em; }
.service-item h3 { font-size: 20px; font-weight: 600; margin: 20px 0 8px; }
.service-item p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.service-item .service-link {
  display: inline-flex;
  align-items: center;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 2px;
  transition: all var(--transition);
}
.service-item .service-link:hover { color: var(--accent); }
.service-item .service-link:hover::after { transform: translateX(4px); }
.service-item .service-link::after { content: "→"; margin-left: 4px; transition: transform var(--transition); }
/* Stats Band */
.stats-band { background: var(--primary); padding: 64px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.stat-item {
  text-align: center;
  padding: 0 24px;
  border-left: 1px solid var(--border-dark);
}
.stat-item:first-child { border-left: none; }
.stat-num { font-size: 64px; font-weight: 200; color: var(--accent); line-height: 1.1; font-family: "Inter", "Helvetica Neue", sans-serif; letter-spacing: -.02em; }
.stat-label { font-size: 15px; color: rgba(255, 255, 255, .7); margin-top: 8px; }
/* Cases */
.cases { background: var(--bg); padding: 88px 0; overflow: hidden; }
.cases-header { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 40px; flex-wrap: wrap; gap: 20px; }
.cases-header .section-head { margin-bottom: 0; }
.cases-link { font-size: 15px; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 6px; border-bottom: 1px solid var(--accent); padding-bottom: 2px; transition: all var(--transition); }
.cases-link:hover { color: var(--accent); gap: 10px; }
.cases-scroll { display: flex; gap: 24px; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 16px; scrollbar-width: thin; scrollbar-color: var(--border) transparent; }
.cases-scroll::-webkit-scrollbar { height: 6px; }
.cases-scroll::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
.case-card {
  flex-shrink: 0;
  scroll-snap-align: start;
  border-radius: var(--radius-card);
  overflow: hidden;
  position: relative;
  background: var(--surface);
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition);
}
.case-card.large { width: 480px; }
.case-card.medium { width: 360px; }
.case-card:hover { box-shadow: var(--shadow-hover); }
.case-card-img { position: relative; height: 260px; overflow: hidden; }
.case-card.large .case-card-img { height: 320px; }
.case-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.case-card:hover img { transform: scale(1.04); }
.case-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(13, 31, 28, .88) 0%, rgba(13, 31, 28, .1) 60%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  transition: background var(--transition);
}
.case-card:hover .case-card-overlay { background: linear-gradient(to top, rgba(13, 31, 28, .92) 0%, rgba(13, 31, 28, .2) 60%, transparent 100%); }
.case-card .badge { background: rgba(255, 255, 255, .15); border-color: rgba(255, 255, 255, .4); color: #fff; align-self: flex-start; margin-bottom: 12px; }
.case-card h3 { font-size: 20px; color: #fff; font-weight: 600; margin-bottom: 6px; }
.case-card p { font-size: 13px; color: rgba(255, 255, 255, .72); line-height: 1.6; }
.case-card .view-detail {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--accent);
  margin-top: 12px;
  opacity: 0;
  transform: translateY(8px);
  transition: all .3s ease;
}
.case-card:hover .view-detail { opacity: 1; transform: translateY(0); }
/* Solutions */
.solutions { padding: 0; background: var(--bg); }
.solutions-wrap { display: grid; grid-template-columns: 55% 45%; }
.solutions-left { background: var(--bg-alt); padding: 88px 48px 88px 32px; }
.solutions-left .section-head { margin-bottom: 40px; }
.solution-list { border-top: 1px solid var(--border); }
.solution-row {
  display: flex;
  align-items: center;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}
.solution-row:hover { background: rgba(255, 255, 255, .6); }
.solution-row .sr-index { font-size: 14px; font-weight: 200; color: var(--accent); width: 60px; font-family: "Inter", sans-serif; }
.solution-row .sr-title { font-size: 18px; font-weight: 600; color: var(--text); flex: 1; }
.solution-row .sr-desc { font-size: 13px; color: var(--text-secondary); flex: 2; margin: 0 24px; line-height: 1.6; }
.solution-row .sr-link { color: var(--text-muted); font-size: 20px; transition: all var(--transition); }
.solution-row:hover .sr-link { color: var(--accent); transform: translateX(4px); }
.solutions-right {
  background: var(--primary);
  padding: 88px 48px;
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.solutions-right::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 240px;
  height: 240px;
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: 50%;
}
.solutions-right .eyebrow { color: var(--accent); }
.solutions-right h2 { font-size: 28px; font-weight: 700; line-height: 1.4; margin-bottom: 32px; color: #fff; }
.solution-menu { display: flex; flex-direction: column; gap: 16px; }
.solution-menu a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border: 1px solid rgba(255, 255, 255, .15);
  border-radius: var(--radius-btn);
  color: rgba(255, 255, 255, .85);
  font-size: 15px;
  transition: all var(--transition);
}
.solution-menu a:hover { border-color: var(--accent); color: var(--accent); background: rgba(194, 155, 90, .08); }
.solution-menu a .sm-arrow { font-size: 18px; }
.solutions-cta {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, .14);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.solutions-cta span { font-size: 14px; color: rgba(255, 255, 255, .7); }
.solutions-cta a { display: inline-flex; align-items: center; gap: 6px; color: var(--accent); font-size: 14px; font-weight: 600; border-bottom: 1px solid var(--accent); padding-bottom: 2px; transition: all var(--transition); }
.solutions-cta a:hover { gap: 10px; }
/* Updates */
.updates { padding: 88px 0; background: var(--bg); }
.updates-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: stretch; }
.update-featured {
  background: var(--surface);
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: box-shadow var(--transition);
  display: block;
}
.update-featured:hover { box-shadow: var(--shadow-hover); }
.update-featured-img { position: relative; height: 240px; overflow: hidden; }
.update-featured-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.update-featured:hover .update-featured-img img { transform: scale(1.04); }
.update-featured .uf-body { padding: 24px; }
.update-featured .uf-body .badge { margin-bottom: 12px; }
.update-featured h3 { font-size: 20px; font-weight: 600; line-height: 1.5; margin-bottom: 8px; color: var(--text); }
.update-featured p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 16px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.update-featured .uf-meta { display: flex; align-items: center; gap: 16px; font-size: 13px; color: var(--text-muted); }
.update-featured .uf-readmore { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--primary); border-bottom: 1px solid var(--accent); padding-bottom: 2px; transition: all var(--transition); }
.update-featured .uf-readmore:hover { color: var(--accent); gap: 10px; }
.update-list { display: flex; flex-direction: column; }
.update-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px dashed rgba(13, 31, 28, .15);
  min-height: 80px;
  transition: all var(--transition);
}
.update-item:hover { background: rgba(13, 31, 28, .02); padding-left: 8px; }
.update-item:last-child { border-bottom: none; }
.update-date { font-size: 12px; font-family: "Inter", "Helvetica Neue", monospace; color: var(--text-muted); white-space: nowrap; width: 90px; flex-shrink: 0; }
.update-item .badge { flex-shrink: 0; }
.update-item h4 { font-size: 15px; font-weight: 500; flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--text); transition: color var(--transition); }
.update-item:hover h4 { color: var(--accent); }
.update-item .arrow { color: var(--text-muted); flex-shrink: 0; transition: all var(--transition); }
.update-item:hover .arrow { color: var(--accent); transform: translateX(4px); }
.empty-state {
  border: 1px dashed var(--border);
  border-radius: var(--radius-card);
  background: var(--surface-alt);
  padding: 40px;
  text-align: center;
  width: 100%;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
}
.empty-state .empty-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}
.empty-state p { color: var(--text-muted); font-size: 15px; }
/* FAQ */
.faq-section { padding: 88px 0; background: var(--bg-alt); }
.faq-layout { display: grid; grid-template-columns: 1fr 1.4fr; gap: 48px; align-items: start; }
.faq-left .section-head { margin-bottom: 24px; }
.faq-contact {
  border: 1px solid var(--accent);
  border-radius: var(--radius-card);
  background: var(--surface);
  padding: 28px;
}
.faq-contact h4 { font-size: 18px; font-weight: 600; margin-bottom: 12px; }
.faq-contact p { font-size: 14px; color: var(--text-secondary); margin-bottom: 8px; }
.faq-contact .contact-item { display: flex; align-items: center; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--border); }
.faq-contact .contact-item:last-child { border-bottom: none; }
.faq-contact .contact-item .ci-label { font-size: 13px; color: var(--text-muted); width: 90px; }
.faq-contact .contact-item .ci-value { font-size: 14px; font-weight: 500; color: var(--text); }
.faq-right .faq-item {
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
}
.faq-right .faq-item:first-child { border-top: 1px solid var(--border); }
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  transition: color var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--accent); }
.faq-item summary .faq-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  position: relative;
  border-radius: 50%;
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.faq-item summary .faq-icon::before,
.faq-item summary .faq-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--text);
  transition: all var(--transition);
}
.faq-item summary .faq-icon::before { width: 10px; height: 1.5px; }
.faq-item summary .faq-icon::after { width: 1.5px; height: 10px; }
.faq-item[open] summary { color: var(--primary); font-weight: 600; }
.faq-item[open] summary .faq-icon { border-color: var(--accent); }
.faq-item[open] summary .faq-icon::before { background: var(--accent); }
.faq-item[open] summary .faq-icon::after { transform: translate(-50%, -50%) rotate(90deg); background: var(--accent); }
.faq-item .faq-answer { padding: 16px 0 0; font-size: 14px; color: var(--text-secondary); line-height: 1.8; }
/* CTA */
.cta-band {
  padding: 88px 0;
  background: var(--primary);
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute;
  right: -100px;
  bottom: -100px;
  width: 400px;
  height: 400px;
  border: 1px solid rgba(255, 255, 255, .06);
  border-radius: 50%;
}
.cta-inner { position: relative; z-index: 2; text-align: center; max-width: 720px; margin: 0 auto; }
.cta-inner .eyebrow { color: var(--accent); }
.cta-inner h2 { font-size: 36px; font-weight: 700; color: #fff; line-height: 1.3; margin-bottom: 16px; }
.cta-inner p { font-size: 15px; color: rgba(255, 255, 255, .7); margin-bottom: 32px; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.cta-note { margin-top: 20px; font-size: 12px; color: rgba(255, 255, 255, .4); }
/* Footer */
.site-footer { background: var(--primary); color: rgba(255, 255, 255, .7); padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 48px; padding-bottom: 48px; }
.footer-brand .brand { margin-bottom: 16px; }
.footer-brand .brand-text .brand-name { font-size: 18px; }
.footer-brand p { font-size: 14px; line-height: 1.8; color: rgba(255, 255, 255, .5); }
.footer-col h4 { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 20px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { font-size: 14px; color: rgba(255, 255, 255, .55); transition: all var(--transition); }
.footer-col ul a:hover { color: var(--accent); padding-left: 4px; }
.footer-contact .contact-row { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 14px; font-size: 14px; color: rgba(255, 255, 255, .55); }
.footer-contact .contact-row .icon { color: var(--accent); flex-shrink: 0; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, .4);
}
.footer-bottom .fb-right { display: flex; align-items: center; gap: 20px; }
/* Focus */
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 2px;
}
/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}
/* Responsive */
@media (max-width: 1199px) {
  .container { padding: 0 24px; }
  .case-card.large { width: 400px; }
  .case-card.medium { width: 320px; }
}
@media (max-width: 1023px) {
  .section { padding: 64px 0; }
  .hero { min-height: 78vh; }
  .hero-copy h1 { font-size: 36px; }
  .quick-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .service-item:nth-child(2) { border-right: none; }
  .service-item:nth-child(1), .service-item:nth-child(2) { border-bottom: 1px solid var(--border); }
  .service-item:nth-child(3) { border-left: 1px solid var(--border); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px 0; }
  .stat-item:nth-child(3) { border-left: none; }
  .solutions-wrap { grid-template-columns: 1fr; }
  .solutions-left { padding: 64px 24px; }
  .solutions-right { padding: 64px 24px; }
  .updates-layout { grid-template-columns: 1fr; gap: 32px; }
  .faq-layout { grid-template-columns: 1fr; gap: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .nav-toggle { display: block; }
  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--primary);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px 24px;
    transform: translateY(-120%);
    transition: transform .3s ease;
    box-shadow: 0 8px 30px rgba(0, 0, 0, .2);
    border-bottom: 1px solid rgba(255, 255, 255, .08);
  }
  .main-nav.open { transform: translateY(0); }
  .main-nav ul { flex-direction: column; align-items: stretch; gap: 0; }
  .main-nav a { padding: 14px 0; border-bottom: 1px solid rgba(255, 255, 255, .08); font-size: 16px; }
  .main-nav a::after { display: none; }
  .header-cta { margin-left: 0; }
}
@media (max-width: 767px) {
  .container { padding: 0 16px; }
  .topbar { display: none; }
  .hero { min-height: 520px; }
  .hero-copy h1 { font-size: 30px; }
  .hero-sub { font-size: 15px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .hero-meta { gap: 16px; }
  .hero-meta .meta-item .num { font-size: 22px; }
  .quick-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .quick-card { padding: 16px; min-height: 80px; }
  .quick-card .qc-title { font-size: 14px; }
  .services-grid { grid-template-columns: 1fr; }
  .service-item { border-left: 1px solid var(--border) !important; border-right: 1px solid var(--border) !important; border-bottom: 1px solid var(--border) !important; }
  .service-item:nth-child(2) { border-right: 1px solid var(--border) !important; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-num { font-size: 40px; }
  .cases-scroll { gap: 16px; }
  .case-card.large, .case-card.medium { width: 280px; }
  .case-card-img, .case-card.large .case-card-img { height: 200px; }
  .solution-row { flex-direction: column; align-items: flex-start; gap: 8px; }
  .solution-row .sr-index { width: auto; }
  .solution-row .sr-desc { margin: 0; }
  .cta-inner h2 { font-size: 28px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .section-head h2 { font-size: 24px; }
  .updates-layout { gap: 24px; }
  .update-featured-img { height: 180px; }
}

/* roulang page: category1 */
:root{
  --primary:#0D1F1C;
  --primary-hover:#16352F;
  --accent:#C29B5A;
  --accent-hover:#D4AF73;
  --bg:#FBFAF7;
  --bg-alt:#F7F6F2;
  --surface:#FFFFFF;
  --surface-alt:#F1EFEA;
  --text:#1D2624;
  --text-medium:#5D6C68;
  --text-light:#9AA6A2;
  --border:#E8E3D9;
  --dark-border:rgba(255,255,255,.14);
  --radius:12px;
  --radius-btn:4px;
  --radius-sm:6px;
  --shadow:0 8px 30px rgba(13,31,28,.08);
  --shadow-hover:0 12px 36px rgba(13,31,28,.14);
  --container:1200px;
  --font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  --font-number:"Inter","Helvetica Neue",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-family);
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;transition:color .25s ease,border-color .25s ease,background-color .25s ease}
img{max-width:100%;height:auto;display:block}
button,input,select{font-family:inherit;font-size:inherit}
.container{max-width:var(--container);margin:0 auto;padding:0 32px}
.section-tag{
  display:inline-block;
  font-size:12px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--accent);
  font-weight:600;
  margin-bottom:12px;
}
.btn-primary{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:var(--accent);
  color:var(--primary);
  border:1px solid var(--accent);
  height:46px;
  padding:0 28px;
  font-weight:600;
  border-radius:var(--radius-btn);
  transition:all .25s ease;
  font-size:15px;
  cursor:pointer;
  gap:8px;
  white-space:nowrap;
}
.btn-primary:hover{
  background:var(--accent-hover);
  box-shadow:0 8px 20px rgba(13,31,28,.18);
  transform:translateY(-1px);
  color:var(--primary);
}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:transparent;
  color:#fff;
  border:1px solid rgba(255,255,255,.5);
  height:46px;
  padding:0 28px;
  font-weight:500;
  border-radius:var(--radius-btn);
  transition:all .25s ease;
  font-size:15px;
  gap:8px;
  white-space:nowrap;
  cursor:pointer;
}
.btn-outline:hover{background:rgba(255,255,255,.08);border-color:#fff;color:#fff}
.btn-outline-dark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:transparent;
  color:var(--primary);
  border:1px solid var(--primary);
  height:44px;
  padding:0 24px;
  font-weight:500;
  border-radius:var(--radius-btn);
  transition:all .25s ease;
  font-size:14px;
  gap:6px;
  white-space:nowrap;
}
.btn-outline-dark:hover{background:rgba(13,31,28,.05);color:var(--primary)}
.btn-arrow{transition:transform .25s ease}
.btn-primary:hover .btn-arrow,.btn-outline:hover .btn-arrow,.btn-outline-dark:hover .btn-arrow{transform:translateX(4px)}
a:focus-visible,button:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
}
::selection{background:rgba(194,155,90,.25)}

/* Header */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(13,31,28,.9);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.06);
  transition:background .3s ease,box-shadow .3s ease;
}
.site-header.scrolled{background:rgba(13,31,28,.96);box-shadow:0 4px 24px rgba(0,0,0,.2)}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:72px;
  gap:24px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:34px;
  height:34px;
  display:flex;
  align-items:center;
  justify-content:center;
}
.brand-mark svg{width:30px;height:30px}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{
  font-size:16px;
  font-weight:700;
  color:#fff;
  letter-spacing:.02em;
}
.brand-sub{
  font-size:10px;
  letter-spacing:.2em;
  color:rgba(194,155,90,.9);
  margin-top:2px;
}
.main-nav ul{
  display:flex;
  align-items:center;
  gap:4px;
  list-style:none;
}
.main-nav a{
  display:block;
  padding:10px 16px;
  font-size:15px;
  color:rgba(255,255,255,.88);
  border-radius:4px;
  position:relative;
  letter-spacing:.02em;
  transition:color .25s ease;
}
.main-nav a::after{
  content:'';
  position:absolute;
  left:16px;
  right:16px;
  bottom:2px;
  height:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .3s ease;
  border-radius:1px;
}
.main-nav a:hover{color:#fff}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:#fff}
.main-nav a.active::after{transform:scaleX(1)}
.header-cta{
  flex-shrink:0;
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 20px;
  background:var(--accent);
  color:var(--primary);
  font-size:14px;
  font-weight:600;
  border-radius:var(--radius-btn);
  transition:all .25s ease;
}
.header-cta:hover{background:var(--accent-hover)}
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:40px;
  height:40px;
  background:transparent;
  border:1px solid rgba(255,255,255,.2);
  border-radius:6px;
  cursor:pointer;
  padding:10px;
}
.nav-toggle span{
  display:block;
  height:1.5px;
  background:#fff;
  border-radius:2px;
  transition:all .3s ease;
}
.nav-toggle.active span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

/* Page Hero */
.page-hero{
  position:relative;
  background-size:cover;
  background-position:center;
  min-height:300px;
  display:flex;
  align-items:center;
  color:#fff;
  overflow:hidden;
}
.page-hero::before{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(13,31,28,.92) 0%,rgba(13,31,28,.68) 55%,rgba(13,31,28,.35) 100%);
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  color:rgba(255,255,255,.6);
  margin-bottom:16px;
  letter-spacing:.02em;
}
.breadcrumb a{color:rgba(255,255,255,.6);transition:color .25s}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:rgba(255,255,255,.9)}
.page-hero h1{
  font-size:36px;
  font-weight:700;
  letter-spacing:-.01em;
  line-height:1.3;
  margin-bottom:14px;
}
.page-hero .hero-sub{
  font-size:15px;
  color:rgba(255,255,255,.75);
  max-width:620px;
  line-height:1.8;
  margin-bottom:24px;
}
.hero-actions{
  display:flex;
  gap:16px;
  flex-wrap:wrap;
}
.hero-address{
  font-size:13px;
  color:rgba(255,255,255,.5);
  margin-top:18px;
  font-family:var(--font-number);
  letter-spacing:.04em;
}
.hero-address a{color:var(--accent);border-bottom:1px solid rgba(194,155,90,.4);transition:border-color .25s}
.hero-address a:hover{border-color:transparent}

/* Section Base */
.section-pad{padding:88px 0}
.overview-section{background:var(--bg);padding:88px 0}
.capabilities-section{background:var(--bg-alt);padding:88px 0}
.stats-band{background:var(--primary);padding:56px 0;position:relative;overflow:hidden}
.scenarios-section{background:var(--bg);padding:88px 0}
.process-section{background:var(--bg-alt);padding:88px 0}
.faq-section{background:var(--bg);padding:88px 0}
.cta-section{background:var(--primary);padding:64px 0;position:relative;overflow:hidden}
.cta-section::before{
  content:'';
  position:absolute;
  width:600px;
  height:600px;
  border-radius:50%;
  background:rgba(194,155,90,.06);
  top:-200px;
  right:-200px;
}
.cta-section .container{position:relative;z-index:2;text-align:center}
.cta-section .section-tag{color:var(--accent)}
.cta-section h2{
  color:#fff;
  font-size:32px;
  font-weight:700;
  letter-spacing:-.01em;
  margin-bottom:14px;
}
.cta-section p{
  color:rgba(255,255,255,.6);
  font-size:15px;
  max-width:640px;
  margin:0 auto 32px;
  line-height:1.8;
}
.cta-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.cta-note{
  margin-top:20px;
  font-size:12px;
  color:rgba(255,255,255,.4);
  letter-spacing:.04em;
}

/* Overview */
.overview-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:64px;
  align-items:start;
}
.overview-text p{
  color:var(--text-medium);
  font-size:16px;
  line-height:1.9;
  margin-bottom:16px;
}
.overview-text .section-tag{color:var(--accent)}
.overview-text h2{
  font-size:32px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--text);
  margin-bottom:20px;
  line-height:1.35;
}
.overview-card{
  background:var(--primary);
  border-radius:var(--radius);
  padding:36px 32px;
  color:#fff;
  box-shadow:var(--shadow);
}
.overview-card h3{
  font-size:18px;
  font-weight:600;
  margin-bottom:24px;
  color:#fff;
}
.overview-card ul{
  list-style:none;
  margin-bottom:28px;
}
.overview-card li{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:14px 0;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.overview-card li:last-child{border-bottom:none}
.overview-card .ov-num{
  font-family:var(--font-number);
  font-size:26px;
  font-weight:200;
  color:var(--accent);
}
.overview-card .ov-label{
  font-size:14px;
  color:rgba(255,255,255,.68);
}
.overview-card .btn-primary{width:100%}

/* Capabilities */
.capabilities-section .section-head{text-align:left;margin-bottom:48px;max-width:560px}
.capabilities-section .section-head h2{
  font-size:32px;
  font-weight:700;
  color:var(--text);
  letter-spacing:-.01em;
  line-height:1.35;
  margin-bottom:12px;
}
.capabilities-section .section-head p{
  color:var(--text-medium);
  font-size:15px;
  line-height:1.8;
}
.capability-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:32px;
}
.cap-item{
  border-top:1px solid var(--border);
  padding-top:28px;
  transition:background-color .3s ease;
  position:relative;
}
.cap-item:hover{background:rgba(13,31,28,.03)}
.cap-item:hover .cap-num{color:var(--accent)}
.cap-item::after{
  content:'→';
  position:absolute;
  bottom:16px;
  right:0;
  opacity:0;
  transform:translateX(-8px);
  transition:all .3s ease;
  color:var(--accent);
  font-size:20px;
}
.cap-item:hover::after{opacity:1;transform:translateX(0)}
.cap-num{
  font-family:var(--font-number);
  font-size:44px;
  font-weight:200;
  color:var(--text-light);
  line-height:1;
  display:block;
  margin-bottom:20px;
  transition:color .3s ease;
}
.cap-item h3{
  font-size:20px;
  font-weight:600;
  color:var(--text);
  margin-bottom:10px;
}
.cap-item p{
  font-size:14px;
  color:var(--text-medium);
  line-height:1.75;
  padding-bottom:48px;
}

/* Stats */
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
}
.stat{
  text-align:center;
  padding:20px 24px;
  border-left:1px solid rgba(255,255,255,.12);
}
.stat:first-child{border-left:none}
.stat-num{
  font-family:var(--font-number);
  font-size:56px;
  font-weight:200;
  color:var(--accent);
  line-height:1.2;
  display:block;
  letter-spacing:-.02em;
}
.stat-label{
  font-size:14px;
  color:rgba(255,255,255,.6);
  display:block;
  margin-top:6px;
  letter-spacing:.06em;
}

/* Scenarios */
.scenarios-section .section-head{
  text-align:center;
  margin-bottom:48px;
}
.scenarios-section .section-head h2{
  font-size:32px;
  font-weight:700;
  color:var(--text);
  letter-spacing:-.01em;
  margin-bottom:12px;
}
.scenarios-section .section-head p{
  color:var(--text-medium);
  font-size:15px;
  max-width:600px;
  margin:0 auto;
}
.scenario-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.scenario-card{
  background:var(--surface);
  border-radius:var(--radius);
  border:1px solid var(--border);
  overflow:hidden;
  transition:box-shadow .3s ease,transform .3s ease,border-color .3s ease;
}
.scenario-card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-3px);
  border-color:rgba(194,155,90,.3);
}
.scenario-card .img-wrap{
  aspect-ratio:16/10;
  overflow:hidden;
  position:relative;
}
.scenario-card .img-wrap img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.scenario-card:hover .img-wrap img{transform:scale(1.05)}
.scenario-card-body{padding:20px}
.scenario-card-body h3{
  font-size:18px;
  font-weight:600;
  color:var(--text);
  margin-bottom:8px;
}
.scenario-card-body p{
  font-size:14px;
  color:var(--text-medium);
  line-height:1.7;
}

/* Process */
.process-section .section-head{
  text-align:center;
  margin-bottom:56px;
}
.process-section .section-head h2{
  font-size:32px;
  font-weight:700;
  color:var(--text);
  letter-spacing:-.01em;
  margin-bottom:12px;
}
.process-section .section-head p{
  color:var(--text-medium);
  font-size:15px;
  max-width:600px;
  margin:0 auto;
}
.process-steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:32px;
  position:relative;
}
.process-steps::before{
  content:'';
  position:absolute;
  top:32px;
  left:6%;
  right:6%;
  height:1px;
  background:var(--border);
}
.step{
  position:relative;
  padding-top:72px;
  text-align:center;
}
.step .step-num{
  position:absolute;
  top:0;
  left:50%;
  transform:translateX(-50%);
  width:64px;
  height:64px;
  border-radius:50%;
  background:var(--surface);
  border:1px solid var(--border);
  display:flex;
  align-items:center;
  justify-content:center;
  font-family:var(--font-number);
  font-size:22px;
  font-weight:300;
  color:var(--primary);
  z-index:2;
  transition:all .3s ease;
  box-shadow:0 4px 16px rgba(13,31,28,.05);
}
.step:hover .step-num{
  border-color:var(--accent);
  color:var(--accent);
  box-shadow:0 8px 24px rgba(194,155,90,.15);
}
.step h3{
  font-size:18px;
  font-weight:600;
  color:var(--text);
  margin-bottom:8px;
}
.step p{
  font-size:14px;
  color:var(--text-medium);
  line-height:1.7;
  max-width:240px;
  margin:0 auto;
}

/* FAQ */
.faq-section .section-head{
  text-align:center;
  margin-bottom:48px;
}
.faq-section .section-head h2{
  font-size:32px;
  font-weight:700;
  color:var(--text);
  letter-spacing:-.01em;
  margin-bottom:12px;
}
.faq-section .section-head p{
  color:var(--text-medium);
  font-size:15px;
  max-width:600px;
  margin:0 auto;
}
.faq-list{
  max-width:820px;
  margin:0 auto;
}
.faq-item{
  border-bottom:1px solid var(--border);
}
.faq-item:first-child{border-top:1px solid var(--border)}
.faq-question{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 8px;
  cursor:pointer;
  font-size:16px;
  font-weight:500;
  color:var(--text);
  transition:color .25s;
  background:transparent;
  border:none;
  width:100%;
  text-align:left;
}
.faq-question:hover{color:var(--primary)}
.faq-item.active .faq-question{
  color:var(--primary);
  font-weight:600;
}
.faq-icon{
  position:relative;
  width:20px;
  height:20px;
  flex-shrink:0;
}
.faq-icon::before,.faq-icon::after{
  content:'';
  position:absolute;
  background:var(--accent);
  transition:transform .3s ease;
}
.faq-icon::before{width:14px;height:2px;top:9px;left:3px}
.faq-icon::after{width:2px;height:14px;top:3px;left:9px}
.faq-item.active .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-answer{
  max-height:0;
  overflow:hidden;
  transition:max-height .35s ease;
}
.faq-item.active .faq-answer{max-height:360px}
.faq-answer-inner{
  padding:0 8px 24px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-medium);
}

/* Footer */
.site-footer{
  background:var(--primary);
  color:rgba(255,255,255,.68);
  padding:64px 0 0;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1.2fr;
  gap:48px;
  padding-bottom:48px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.5);
  max-width:340px;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:#fff;
  margin-bottom:20px;
  letter-spacing:.04em;
}
.footer-col ul{list-style:none}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{
  color:rgba(255,255,255,.55);
  font-size:14px;
  transition:color .25s,padding-left .25s;
}
.footer-col ul a:hover{color:var(--accent);padding-left:4px}
.contact-row{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:12px;
  font-size:14px;
  color:rgba(255,255,255,.55);
}
.contact-row .icon{
  width:28px;
  height:28px;
  border-radius:6px;
  background:rgba(255,255,255,.06);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:12px;
  color:var(--accent);
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:20px 0;
  font-size:13px;
  color:rgba(255,255,255,.35);
  flex-wrap:wrap;
  gap:8px;
}
.fb-right{display:flex;gap:20px}
.fb-right span{color:rgba(255,255,255,.3)}

/* Reveal animation */
.reveal{
  opacity:0;
  transform:translateY(24px);
  transition:opacity .6s ease,transform .6s ease;
}
.reveal.visible{opacity:1;transform:translateY(0)}

/* Responsive */
@media(max-width:1024px){
  .capability-grid{grid-template-columns:repeat(2,1fr);gap:24px}
  .scenario-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .process-steps{grid-template-columns:repeat(2,1fr);gap:48px 32px}
  .process-steps::before{display:none}
  .step{padding-top:76px}
  .overview-grid{gap:40px;grid-template-columns:7fr 5fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:none}
  .stat:nth-child(3){border-left:none}
  .stat:nth-child(4){border-right:none}
  .stat{border-right:1px solid rgba(255,255,255,.12)}
  .cta-section h2{font-size:28px}
}
@media(max-width:768px){
  .header-inner{height:60px}
  .nav-toggle{display:flex}
  .main-nav{
    position:fixed;
    top:60px;
    left:0;
    right:0;
    background:rgba(13,31,28,.98);
    backdrop-filter:blur(14px);
    padding:16px 20px 24px;
    transform:translateY(-12px);
    opacity:0;
    pointer-events:none;
    transition:all .3s ease;
    border-bottom:1px solid rgba(255,255,255,.08);
    box-shadow:0 16px 32px rgba(0,0,0,.3);
  }
  .main-nav.open{
    transform:translateY(0);
    opacity:1;
    pointer-events:auto;
  }
  .main-nav ul{flex-direction:column;align-items:stretch;gap:4px}
  .main-nav a{
    padding:13px 8px;
    font-size:16px;
    border-radius:4px;
  }
  .main-nav a::after{display:none}
  .main-nav a.active{background:rgba(194,155,90,.12);color:var(--accent)}
  .header-cta{display:none}
  .page-hero{min-height:260px}
  .page-hero h1{font-size:28px}
  .page-hero .hero-sub{font-size:14px}
  .overview-grid{grid-template-columns:1fr}
  .overview-card{margin-top:8px}
  .section-pad{padding:64px 0}
  .overview-section,.capabilities-section,.scenarios-section,.process-section,.faq-section{padding:64px 0}
  .cta-section{padding:56px 0}
  .capability-grid{grid-template-columns:1fr 1fr;gap:16px}
  .cap-num{font-size:36px}
  .cap-item h3{font-size:18px}
  .cta-section h2{font-size:24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;text-align:center}
  .stat-num{font-size:40px}
  .btn-primary,.btn-outline{width:100%;max-width:none}
  .hero-actions{flex-direction:column;align-items:stretch}
  .overview-card .btn-primary{width:100%}
}
@media(max-width:520px){
  .container{padding:0 20px}
  .capability-grid{grid-template-columns:1fr}
  .scenario-grid{grid-template-columns:1fr}
  .process-steps{grid-template-columns:1fr;gap:36px}
  .stats-grid{grid-template-columns:1fr 1fr}
  .stat{padding:16px 12px}
  .stat-num{font-size:36px}
  .section-tag{font-size:11px}
  .page-hero h1{font-size:26px}
  .overview-text h2,.capabilities-section .section-head h2,.scenarios-section .section-head h2,.process-section .section-head h2,.faq-section .section-head h2{font-size:24px}
  .cta-section h2{font-size:22px}
  .cta-buttons{flex-direction:column}
  .footer-col h4{margin-bottom:14px}
  .contact-row{font-size:13px}
}
@media(max-width:480px){
  .container{padding:0 16px}
  .btn-primary,.btn-outline{width:100%}
  .hero-actions{width:100%}
  .overview-card{padding:28px 22px}
  .faq-question{font-size:15px;padding:18px 4px}
}
@media(prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --primary:#0D1F1C;
  --primary-hover:#16352F;
  --accent:#C29B5A;
  --accent-hover:#D4AF73;
  --bg:#FBFAF7;
  --bg-alt:#F7F6F2;
  --surface:#FFFFFF;
  --surface-alt:#F1EFEA;
  --text:#1D2624;
  --text-secondary:#5D6C68;
  --text-muted:#9AA6A2;
  --border:#E8E3D9;
  --radius:12px;
  --radius-sm:6px;
  --shadow:0 8px 30px rgba(13,31,28,.08);
  --shadow-hover:0 12px 36px rgba(13,31,28,.14);
  --transition:.25s ease;
  --font-main:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-main);
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--text);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--accent)}
ul,ol{list-style:none}
button,input,textarea{font-family:inherit;font-size:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 32px}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--accent);color:var(--primary);
  border:1px solid var(--accent);border-radius:4px;
  height:44px;padding:0 28px;font-size:15px;font-weight:600;
  cursor:pointer;transition:all var(--transition);white-space:nowrap;
}
.btn-primary:hover{background:var(--accent-hover);color:var(--primary);box-shadow:0 8px 20px rgba(13,31,28,.18)}
.btn-primary:active{transform:translateY(1px)}
.btn-secondary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:#fff;
  border:1px solid rgba(255,255,255,.5);border-radius:4px;
  height:44px;padding:0 28px;font-size:15px;font-weight:500;
  cursor:pointer;transition:all var(--transition);white-space:nowrap;
}
.btn-secondary:hover{background:rgba(255,255,255,.08);border-color:#fff;color:#fff}
.btn-secondary-dark{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--primary);
  border:1px solid var(--primary);border-radius:4px;
  height:44px;padding:0 28px;font-size:15px;font-weight:500;
  cursor:pointer;transition:all var(--transition);white-space:nowrap;
}
.btn-secondary-dark:hover{background:rgba(13,31,28,.05)}
.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--accent);color:var(--primary);
  border:1px solid var(--accent);border-radius:4px;
  height:44px;padding:0 24px;font-size:14px;font-weight:600;
  cursor:pointer;transition:all var(--transition);
}
.btn-accent:hover{background:var(--accent-hover);color:var(--primary);box-shadow:0 8px 20px rgba(13,31,28,.18)}
.breadcrumb-bar{
  background:var(--bg-alt);
  border-bottom:1px solid var(--border);
  padding:16px 0;
}
.breadcrumb{
  font-size:14px;color:var(--text-muted);
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
}
.breadcrumb a{color:var(--text-secondary);transition:color var(--transition)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:var(--text-muted);opacity:.6}
.breadcrumb .current{
  color:var(--text-secondary);max-width:320px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.site-header{
  position:sticky;top:0;z-index:100;
  background:var(--primary);
  height:72px;
  transition:background var(--transition),box-shadow var(--transition);
}
.site-header.scrolled{
  background:rgba(13,31,28,.85);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:0 4px 20px rgba(0,0,0,.2);
}
.header-inner{
  height:100%;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{
  display:flex;align-items:center;gap:12px;
  flex-shrink:0;
}
.brand-mark{
  width:38px;height:38px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
}
.brand-mark svg{width:100%;height:100%}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{
  font-size:19px;font-weight:700;color:#fff;
  letter-spacing:.02em;
}
.brand-sub{
  font-size:10px;color:var(--accent);
  letter-spacing:.24em;text-transform:uppercase;
  margin-top:2px;
}
.main-nav ul{
  display:flex;align-items:center;gap:6px;
}
.main-nav a{
  display:block;
  padding:24px 16px;
  font-size:15px;color:rgba(255,255,255,.9);
  letter-spacing:.02em;
  position:relative;
  transition:color var(--transition);
}
.main-nav a::after{
  content:'';position:absolute;left:16px;right:16px;bottom:0;
  height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;
  transition:transform var(--transition);
}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active::after{transform:scaleX(1)}
.header-cta{
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--accent);color:var(--primary);
  font-size:14px;font-weight:600;
  height:38px;padding:0 20px;border-radius:4px;
  transition:all var(--transition);white-space:nowrap;
}
.header-cta:hover{
  background:var(--accent-hover);color:var(--primary);
  box-shadow:0 6px 16px rgba(13,31,28,.3);
}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  background:transparent;border:none;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{
  display:block;width:22px;height:2px;
  background:#fff;border-radius:2px;
  transition:all .3s ease;
}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.article-main{
  padding:48px 0 64px;
}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:48px;
  align-items:start;
}
.article-content-col{
  background:var(--surface);
  border-radius:var(--radius);
  padding:48px;
  box-shadow:var(--shadow);
}
.article-category-badge{
  display:inline-block;
  font-size:12px;color:var(--primary);
  border:1px solid rgba(13,31,28,.3);
  border-radius:999px;
  padding:2px 14px;height:22px;line-height:18px;
  letter-spacing:.04em;
  background:var(--bg-alt);
  margin-bottom:20px;
}
.article-title{
  font-size:34px;font-weight:700;
  line-height:1.4;letter-spacing:-0.01em;
  color:var(--text);
  margin-bottom:16px;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;
  gap:0;font-size:13px;color:var(--text-muted);
  padding-bottom:20px;margin-bottom:24px;
  border-bottom:1px solid var(--border);
}
.article-meta span{
  padding:0 12px;
  display:inline-flex;align-items:center;
}
.article-meta span:first-child{padding-left:0}
.article-meta span+span{border-left:1px solid var(--border)}
.article-summary{
  font-size:17px;color:var(--text-secondary);
  font-style:italic;line-height:1.7;
  padding:20px 24px;
  background:var(--bg-alt);
  border-radius:8px;
  margin-bottom:32px;
}
.article-body{
  font-size:16px;line-height:1.9;
  color:var(--text);
  padding-bottom:32px;
}
.article-body h2{
  font-size:25px;font-weight:700;color:var(--text);
  line-height:1.4;
  margin:48px 0 16px;
  padding-left:16px;
  border-left:3px solid var(--primary);
}
.article-body h3{
  font-size:19px;font-weight:700;color:var(--text);
  margin:36px 0 12px;
}
.article-body p{
  margin-bottom:24px;
  line-height:1.9;
}
.article-body blockquote{
  background:#F4F1EA;
  border-left:2px solid var(--accent);
  padding:20px 24px;
  margin:28px 0;
  border-radius:0 8px 8px 0;
  color:var(--text-secondary);
  font-style:italic;
  line-height:1.8;
}
.article-body ul,
.article-body ol{
  margin:0 0 24px;
  padding-left:24px;
}
.article-body ul li{
  position:relative;
  padding-left:10px;
  margin-bottom:10px;
  line-height:1.8;
}
.article-body ul li::before{
  content:'';
  position:absolute;
  left:-14px;top:.7em;
  width:6px;height:6px;
  background:var(--accent);
}
.article-body ol{
  list-style:decimal;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:28px 0;
  font-size:14px;
}
.article-body th{
  background:var(--primary);
  color:#fff;
  padding:12px 16px;
  text-align:left;
  font-weight:600;
  border:1px solid var(--primary);
}
.article-body td{
  padding:12px 16px;
  border:1px solid var(--border);
}
.article-body img{
  max-width:100%;height:auto;
  border-radius:8px;
  margin:24px 0;
}
.article-body a{
  color:var(--accent);
  text-decoration:underline;
  text-underline-offset:3px;
}
.article-body a:hover{color:var(--accent-hover)}
.article-tags{
  display:flex;flex-wrap:wrap;gap:8px;
  padding:24px 0;
  border-top:1px solid var(--border);
}
.tag{
  font-size:12px;color:var(--text-secondary);
  background:var(--surface-alt);
  border-radius:4px;
  padding:4px 12px;
  transition:all var(--transition);
}
.tag:hover{background:var(--primary);color:#fff}
.article-share{
  display:flex;align-items:center;gap:12px;
  padding-top:20px;
  border-top:1px solid var(--border);
  font-size:14px;color:var(--text-muted);
}
.article-share a{
  display:inline-flex;align-items:center;gap:4px;
  color:var(--text-secondary);
  padding:6px 14px;
  border:1px solid var(--border);
  border-radius:999px;
  font-size:13px;
  transition:all var(--transition);
}
.article-share a:hover{
  border-color:var(--accent);color:var(--accent);
}
.article-sidebar{
  display:flex;flex-direction:column;gap:24px;
  position:sticky;top:96px;
}
.sidebar-card{
  background:var(--surface);
  border-radius:var(--radius);
  padding:24px;
  box-shadow:var(--shadow);
}
.sidebar-card h3{
  font-size:15px;font-weight:700;
  color:var(--text);
  margin-bottom:16px;
  padding-bottom:12px;
  border-bottom:1px solid var(--border);
}
.toc-list li{
  margin-bottom:6px;
}
.toc-list a{
  display:block;
  font-size:14px;
  color:var(--text-muted);
  line-height:1.5;
  padding:5px 10px;
  border-left:2px solid transparent;
  transition:all var(--transition);
}
.toc-list a:hover{
  color:var(--text);
  border-left-color:var(--accent);
  padding-left:14px;
}
.toc-list a.active{
  color:var(--primary);
  font-weight:600;
  border-left-color:var(--accent);
  background:rgba(194,155,90,.06);
}
.toc-list .toc-sub{
  padding-left:24px;
  font-size:13px;
}
.toc-empty{
  font-size:14px;color:var(--text-muted);
  padding:12px 0;
}
.related-list li{
  border-bottom:1px dashed var(--border);
}
.related-list li:last-child{border-bottom:none}
.related-list a{
  display:block;
  padding:14px 0;
  transition:background var(--transition);
}
.related-list a:hover{
  padding-left:6px;
  background:transparent;
}
.rel-cat{
  display:block;
  font-size:12px;color:var(--text-muted);
  margin-bottom:4px;
}
.rel-title{
  display:block;
  font-size:15px;font-weight:500;
  color:var(--text);
  line-height:1.4;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  transition:color var(--transition);
}
.related-list a:hover .rel-title{color:var(--primary)}
.rel-date{
  display:block;
  font-size:12px;color:var(--text-muted);
  margin-top:4px;
}
.service-card{
  background:var(--primary);
  background-image:url('/assets/images/coverpic/cover-2.png');
  background-size:cover;background-position:center;
  position:relative;
  border-radius:var(--radius);
  padding:0;
  overflow:hidden;
  min-height:180px;
}
.service-card-overlay{
  position:absolute;inset:0;
  background:var(--primary);
  opacity:.85;
}
.service-card-content{
  position:relative;
  z-index:1;
  padding:28px 24px;
  color:#fff;
}
.service-card-content h3{
  color:#fff;
  border-bottom:none;
  padding-bottom:0;
  margin-bottom:8px;
  font-size:17px;
}
.service-card-content p{
  font-size:13px;
  color:rgba(255,255,255,.7);
  margin-bottom:16px;
}
.sidebar-banner{
  display:block;
  border-radius:var(--radius);
  overflow:hidden;
  position:relative;
  box-shadow:var(--shadow);
  transition:box-shadow var(--transition);
}
.sidebar-banner:hover{
  box-shadow:var(--shadow-hover);
}
.sidebar-banner img{
  width:100%;
  height:120px;
  object-fit:cover;
}
.sidebar-banner span{
  position:absolute;left:16px;bottom:12px;
  color:#fff;
  font-size:15px;font-weight:600;
  text-shadow:0 2px 8px rgba(0,0,0,.4);
}
.post-navigation{
  padding:8px 0 64px;
}
.post-nav-inner{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}
.post-nav-item{
  display:block;
  background:var(--surface);
  border-radius:var(--radius);
  padding:24px 32px;
  border:1px solid var(--border);
  transition:all var(--transition);
}
.post-nav-item:hover{
  border-color:var(--accent);
  box-shadow:var(--shadow-hover);
  background:var(--bg-alt);
}
.post-nav-item.next{
  text-align:right;
}
.post-nav-label{
  display:block;
  font-size:12px;color:var(--text-muted);
  margin-bottom:8px;
}
.post-nav-title{
  display:block;
  font-size:16px;font-weight:600;
  color:var(--text);
  line-height:1.4;
  transition:color var(--transition);
}
.post-nav-item:hover .post-nav-title{color:var(--primary)}
.article-empty{
  max-width:640px;
  margin:0 auto;
  text-align:center;
  padding:100px 32px;
}
.empty-icon{
  width:72px;height:72px;
  border-radius:50%;
  background:var(--surface-alt);
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 24px;
}
.empty-icon svg{
  width:32px;height:32px;
  stroke:var(--text-muted);
  fill:none;
}
.article-empty h1{
  font-size:32px;
  margin-bottom:16px;
  color:var(--text);
}
.article-empty p{
  font-size:16px;
  color:var(--text-secondary);
  margin-bottom:32px;
  line-height:1.8;
}
.site-footer{
  background:var(--primary);
  color:rgba(255,255,255,.72);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:48px;
  padding-bottom:48px;
}
.footer-brand .brand{
  margin-bottom:16px;
}
.footer-brand .brand-name{
  color:#fff;
}
.footer-brand .brand-sub{
  color:var(--accent);
}
.footer-brand p{
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.6);
}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
}
.footer-col ul li{
  margin-bottom:10px;
}
.footer-col ul a{
  font-size:14px;
  color:rgba(255,255,255,.6);
  transition:color var(--transition);
}
.footer-col ul a:hover{
  color:var(--accent);
}
.footer-contact .contact-row{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  margin-bottom:12px;
  color:rgba(255,255,255,.6);
}
.footer-contact .icon{
  color:var(--accent);
  font-style:normal;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:24px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:rgba(255,255,255,.5);
}
.fb-right{
  display:flex;
  gap:24px;
  align-items:center;
}
.fb-right span{
  color:rgba(255,255,255,.5);
}
:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
}
@media (max-width:1024px){
  .container{padding:0 20px}
  .article-layout{
    grid-template-columns:1fr;
    gap:32px;
  }
  .article-sidebar{
    position:static;
    flex-direction:row;
    flex-wrap:wrap;
  }
  .sidebar-card{
    flex:1 1 calc(50% - 12px);
  }
  .sidebar-banner{
    flex:1 1 100%;
  }
}
@media (max-width:768px){
  .site-header{height:60px}
  .main-nav{
    position:fixed;
    top:60px;left:0;right:0;
    background:var(--primary);
    display:none;
    flex-direction:column;
    padding:0 20px 20px;
    box-shadow:0 8px 20px rgba(0,0,0,.3);
    max-height:calc(100vh - 60px);
    overflow-y:auto;
  }
  .main-nav.open{display:flex}
  .main-nav ul{
    flex-direction:column;
    align-items:stretch;
    gap:0;
  }
  .main-nav a{
    display:block;
    padding:16px 0;
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .main-nav a::after{display:none}
  .nav-toggle{display:flex}
  .header-cta{display:none}
  .article-content-col{
    padding:28px 20px;
  }
  .article-title{
    font-size:26px;
  }
  .article-meta{
    font-size:12px;
    gap:0;
  }
  .article-meta span{
    padding:0 8px;
  }
  .article-summary{
    font-size:15px;
    padding:16px 20px;
  }
  .article-body{
    font-size:15px;
  }
  .article-body h2{
    font-size:22px;
  }
  .article-body h3{
    font-size:18px;
  }
  .post-nav-inner{
    grid-template-columns:1fr;
    gap:16px;
  }
  .footer-grid{
    grid-template-columns:1fr 1fr;
    gap:32px;
  }
  .footer-bottom{
    flex-direction:column;
    gap:12px;
    text-align:center;
  }
}
@media (max-width:520px){
  .container{padding:0 16px}
  .breadcrumb{
    font-size:13px;
  }
  .breadcrumb .current{
    max-width:160px;
  }
  .article-content-col{
    padding:24px 16px;
    border-radius:8px;
  }
  .article-title{
    font-size:22px;
  }
  .article-meta{
    flex-wrap:wrap;
    gap:4px 0;
  }
  .article-meta span{
    border-left:none;
    padding:0 8px;
  }
  .article-meta span+span{
    border-left:1px solid var(--border);
  }
  .article-body table{
    display:block;
    overflow-x:auto;
    white-space:nowrap;
  }
  .article-sidebar{
    flex-direction:column;
  }
  .sidebar-card{
    flex:1 1 auto;
  }
  .footer-grid{
    grid-template-columns:1fr;
    gap:28px;
  }
  .footer-bottom{
    font-size:12px;
  }
  .fb-right{
    gap:12px;
  }
  .article-empty{
    padding:60px 20px;
  }
  .article-empty h1{
    font-size:26px;
  }
  .btn-primary,
  .btn-secondary,
  .btn-secondary-dark{
    width:100%;
  }
}
@media (prefers-reduced-motion: reduce){
  *{
    animation:none!important;
    transition:none!important;
    scroll-behavior:auto!important;
  }
}

/* roulang page: category3 */
:root {
            --primary: #0D1F1C;
            --primary-hover: #16352F;
            --accent: #C29B5A;
            --accent-hover: #D4AF73;
            --bg: #FBFAF7;
            --bg-alt: #F7F6F2;
            --surface: #FFFFFF;
            --surface-alt: #F1EFEA;
            --text: #1D2624;
            --text-secondary: #5D6C68;
            --text-light: #9AA6A2;
            --border: #E8E3D9;
            --border-dark: rgba(255, 255, 255, .14);
            --success: #2E7D5B;
            --warning: #B47B2A;
            --error: #B03A2E;
            --info: #2F6B7A;
            --radius-card: 12px;
            --radius-btn: 4px;
            --shadow: 0 8px 30px rgba(13, 31, 28, .08);
            --shadow-hover: 0 12px 36px rgba(13, 31, 28, .14);
            --transition: all .25s ease;
            --font-display: 'Inter', 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--text);
            text-decoration: none;
            transition: color .25s ease;
        }
        a:hover {
            color: var(--accent);
        }
        ul, ol {
            list-style: none;
        }
        button {
            font-family: inherit;
            border: none;
            cursor: pointer;
            background: none;
        }
        input, textarea, select {
            font-family: inherit;
            font-size: 14px;
        }
        :focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 32px;
        }
        .section {
            padding: 88px 0;
        }
        .section-alt {
            background-color: var(--bg-alt);
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 46px;
            padding: 0 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: .02em;
            transition: var(--transition);
            cursor: pointer;
            line-height: 1;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary);
            border: 1px solid var(--accent);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            color: var(--primary);
            box-shadow: 0 8px 20px rgba(13, 31, 28, .18);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(1px);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, .5);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .08);
            color: #fff;
            border-color: rgba(255, 255, 255, .75);
        }
        .btn-outline-dark {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-outline-dark:hover {
            background: rgba(13, 31, 28, .05);
            color: var(--primary);
        }
        .btn-lg {
            height: 52px;
            padding: 0 36px;
            font-size: 16px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(13, 31, 28, .9);
            -webkit-backdrop-filter: blur(14px);
            backdrop-filter: blur(14px);
            transition: background .3s ease;
        }
        .site-header.scrolled {
            background: rgba(13, 31, 28, .85);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .brand-mark {
            display: flex;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
        }
        .brand-mark svg {
            width: 100%;
            height: 100%;
        }
        .brand-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }
        .brand-name {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            letter-spacing: .01em;
        }
        .brand-sub {
            font-size: 10px;
            color: var(--accent);
            letter-spacing: .24em;
            text-transform: uppercase;
            margin-top: 2px;
        }
        .main-nav ul {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .main-nav a {
            display: block;
            color: rgba(255, 255, 255, .9);
            font-size: 15px;
            font-weight: 400;
            letter-spacing: .02em;
            padding: 18px 0;
            position: relative;
            transition: color .25s ease;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width .3s ease;
        }
        .main-nav a:hover {
            color: #fff;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .main-nav a.active {
            color: #fff;
            font-weight: 500;
        }
        .main-nav a.active::after {
            width: 100%;
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 38px;
            padding: 0 20px;
            background: var(--accent);
            color: var(--primary);
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
            flex-shrink: 0;
            white-space: nowrap;
        }
        .header-cta:hover {
            background: var(--accent-hover);
            color: var(--primary);
            box-shadow: 0 4px 16px rgba(194, 155, 90, .3);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 42px;
            height: 42px;
            align-items: center;
            border-radius: 6px;
        }
        .nav-toggle span {
            width: 20px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: var(--transition);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ===== Hero ===== */
        .category-hero {
            position: relative;
            min-height: 240px;
            display: flex;
            align-items: center;
            background: linear-gradient(90deg, #0D1F1C 0%, rgba(13, 31, 28, .55) 60%, transparent 100%);
        }
        .category-hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center 30%;
            z-index: -2;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(13, 31, 28, .62);
            z-index: -1;
        }
        .category-hero .container {
            padding-top: 40px;
            padding-bottom: 40px;
        }
        .breadcrumb {
            font-size: 12px;
            color: rgba(255, 255, 255, .6);
            margin-bottom: 12px;
            letter-spacing: .04em;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, .6);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .sep {
            margin: 0 8px;
            opacity: .6;
        }
        .breadcrumb .current {
            color: rgba(255, 255, 255, .9);
        }
        .category-hero h1 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.01em;
            line-height: 1.3;
            margin-bottom: 8px;
        }
        .category-hero .lead {
            font-size: 15px;
            color: rgba(255, 255, 255, .72);
            max-width: 660px;
            line-height: 1.7;
        }

        /* ===== Category Intro & Overview ===== */
        .cat-overview {
            padding: 80px 0 0;
        }
        .cat-overview-grid {
            display: grid;
            grid-template-columns: 7fr 5fr;
            gap: 48px;
            align-items: start;
        }
        .cat-overview-content {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.9;
        }
        .cat-overview-content p + p {
            margin-top: 16px;
        }
        .cat-overview-content strong {
            color: var(--primary);
            font-weight: 600;
        }
        .cat-overview-card {
            background: var(--primary);
            border-radius: var(--radius-card);
            padding: 32px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cat-overview-card::after {
            content: '';
            position: absolute;
            top: -30px;
            right: -30px;
            width: 100px;
            height: 100px;
            border-radius: 50%;
            background: rgba(194, 155, 90, .15);
        }
        .cat-overview-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 20px;
            color: #fff;
            letter-spacing: .02em;
        }
        .overview-stats {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .overview-stat {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--border-dark);
        }
        .overview-stat:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .overview-stat .label {
            font-size: 13px;
            color: rgba(255, 255, 255, .6);
        }
        .overview-stat .value {
            font-size: 14px;
            color: var(--accent);
            font-weight: 600;
        }

        /* ===== Service Section ===== */
        .service-list {
            margin-top: 16px;
        }
        .service-item {
            display: grid;
            grid-template-columns: 64px 1fr 40px;
            gap: 24px;
            align-items: baseline;
            padding: 36px 16px;
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
            border-radius: 8px;
            cursor: default;
        }
        .service-item:hover {
            background: rgba(13, 31, 28, .03);
        }
        .service-item .service-num {
            font-family: var(--font-display);
            font-size: 44px;
            font-weight: 200;
            color: var(--text-light);
            letter-spacing: -0.02em;
            line-height: 1;
            transition: var(--transition);
        }
        .service-item:hover .service-num {
            color: var(--accent);
        }
        .service-item .service-body .service-title {
            font-size: 20px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 6px;
            letter-spacing: -0.01em;
        }
        .service-item .service-body .service-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }
        .service-item .service-arrow {
            font-size: 20px;
            color: var(--text-light);
            justify-self: end;
            transition: var(--transition);
        }
        .service-item:hover .service-arrow {
            color: var(--accent);
            transform: translateX(4px);
        }

        /* ===== Card / Grid ===== */
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 40px;
            gap: 24px;
            flex-wrap: wrap;
        }
        .section-meta {
            font-size: 12px;
            letter-spacing: .22em;
            color: var(--accent);
            text-transform: uppercase;
            font-weight: 500;
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.01em;
            line-height: 1.3;
            margin-top: 6px;
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 640px;
            margin-top: 8px;
            line-height: 1.7;
        }
        .grid-mixed {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .card {
            background: var(--surface);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: none;
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .card-img {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }
        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }
        .card:hover .card-img img {
            transform: scale(1.04);
        }
        .card-cat {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(13, 31, 28, .8);
            color: var(--accent);
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 999px;
            -webkit-backdrop-filter: blur(4px);
            backdrop-filter: blur(4px);
        }
        .card-body {
            padding: 22px 22px 26px;
        }
        .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--primary);
            line-height: 1.5;
            margin-bottom: 8px;
            letter-spacing: -0.01em;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-light);
        }
        .card-meta i {
            font-size: 11px;
            color: var(--accent);
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            margin-top: 12px;
        }
        .card-link i {
            font-size: 12px;
            transition: transform .25s ease;
        }
        .card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== Process / Timeline ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            margin-top: 24px;
            position: relative;
        }
        .process-step {
            padding: 28px 20px;
            text-align: center;
            position: relative;
            border-right: 1px solid var(--border);
        }
        .process-step:last-child {
            border-right: none;
        }
        .process-num {
            font-family: var(--font-display);
            font-size: 48px;
            font-weight: 200;
            color: var(--accent);
            line-height: 1;
            margin-bottom: 12px;
        }
        .process-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 6px;
        }
        .process-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== Dark Strip ===== */
        .strip-dark {
            background: var(--primary);
            padding: 64px 0;
        }
        .strip-grid {
            display: flex;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .strip-item {
            text-align: center;
            padding: 0 32px;
            position: relative;
            flex: 1;
        }
        .strip-item:not(:last-child)::after {
            content: '';
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 1px;
            height: 48px;
            background: var(--border-dark);
        }
        .strip-number {
            font-family: var(--font-display);
            font-size: 56px;
            font-weight: 200;
            color: var(--accent);
            line-height: 1;
            margin-bottom: 8px;
            letter-spacing: -0.02em;
        }
        .strip-label {
            font-size: 14px;
            color: rgba(255, 255, 255, .72);
            letter-spacing: .04em;
        }

        /* ===== Tags ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 18px;
            font-size: 13px;
            border: 1px solid rgba(13, 31, 28, .25);
            border-radius: 999px;
            color: var(--text-secondary);
            transition: var(--transition);
            cursor: default;
        }
        .tag:hover {
            border-color: var(--accent);
            background: var(--accent);
            color: var(--primary);
        }

        /* ===== FAQ ===== */
        .faq-grid {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 48px;
            align-items: start;
        }
        .faq-sidebar {
            background: var(--surface);
            border: 1px solid var(--accent);
            border-radius: var(--radius-card);
            padding: 28px;
        }
        .faq-sidebar h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 14px;
        }
        .faq-sidebar p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .faq-sidebar .btn {
            width: 100%;
        }
        .faq-list {
            border-top: 1px solid var(--border);
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 8px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text);
            cursor: pointer;
            transition: var(--transition);
            width: 100%;
            text-align: left;
            background: none;
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-question .faq-icon {
            position: relative;
            width: 16px;
            height: 16px;
            flex-shrink: 0;
        }
        .faq-question .faq-icon::before,
        .faq-question .faq-icon::after {
            content: '';
            position: absolute;
            background: var(--text-secondary);
            transition: var(--transition);
        }
        .faq-question .faq-icon::before {
            width: 16px;
            height: 1.5px;
            top: 50%;
            left: 0;
            transform: translateY(-50%);
        }
        .faq-question .faq-icon::after {
            width: 1.5px;
            height: 16px;
            left: 50%;
            top: 0;
            transform: translateX(-50%);
        }
        .faq-item.active .faq-question {
            color: var(--primary);
            font-weight: 600;
        }
        .faq-item.active .faq-icon::before {
            background: var(--accent);
        }
        .faq-item.active .faq-icon::after {
            background: var(--accent);
            transform: translateX(-50%) scaleY(0);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease;
        }
        .faq-answer-inner {
            padding: 0 8px 20px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary);
            padding: 88px 0;
            text-align: center;
        }
        .cta-content {
            max-width: 720px;
            margin: 0 auto;
        }
        .cta-meta {
            font-size: 12px;
            letter-spacing: .24em;
            color: var(--accent);
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .cta-title {
            font-size: 34px;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }
        .cta-desc {
            font-size: 15px;
            color: rgba(255, 255, 255, .72);
            margin-bottom: 30px;
        }
        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-note {
            font-size: 12px;
            color: rgba(255, 255, 255, .48);
            margin-top: 20px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary);
            padding: 64px 0 0;
            color: rgba(255, 255, 255, .7);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
        }
        .footer-brand .brand-name {
            font-size: 18px;
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.8;
            margin-top: 16px;
            color: rgba(255, 255, 255, .6);
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul a {
            font-size: 13px;
            color: rgba(255, 255, 255, .65);
            transition: var(--transition);
        }
        .footer-col ul a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-contact .contact-row {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 13px;
            margin-bottom: 12px;
            color: rgba(255, 255, 255, .65);
        }
        .footer-contact .contact-row .icon {
            color: var(--accent);
            font-size: 12px;
            margin-top: 4px;
            min-width: 18px;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, .1);
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-bottom span {
            font-size: 12px;
            color: rgba(255, 255, 255, .48);
        }
        .fb-right {
            display: flex;
            gap: 16px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .container {
                padding: 0 24px;
            }
            .section {
                padding: 72px 0;
            }
            .cat-overview-grid {
                grid-template-columns: 1fr;
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .process-step {
                border: 1px solid var(--border);
                border-radius: var(--radius-card);
            }
            .grid-mixed {
                grid-template-columns: 1fr;
                max-width: 720px;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                position: fixed;
                top: 60px;
                left: 0;
                width: 100%;
                background: var(--primary);
                padding: 16px 24px 24px;
                transform: translateY(-120%);
                transition: transform .3s ease;
                z-index: 99;
                box-shadow: 0 8px 30px rgba(13, 31, 28, .3);
                border-top: 1px solid rgba(255, 255, 255, .1);
            }
            .main-nav.open {
                transform: translateY(0);
            }
            .main-nav ul {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }
            .main-nav a {
                width: 100%;
                padding: 12px 0;
                font-size: 16px;
                border-bottom: 1px solid rgba(255, 255, 255, .06);
            }
            .nav-toggle {
                display: flex;
            }
            .header-cta {
                display: none;
            }
            .header-inner {
                height: 60px;
            }
            .category-hero {
                min-height: 210px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .section-title {
                font-size: 26px;
            }
            .service-item {
                grid-template-columns: 44px 1fr 24px;
                gap: 16px;
                padding: 28px 8px;
            }
            .service-item .service-num {
                font-size: 32px;
            }
            .strip-item {
                padding: 0 12px;
            }
            .strip-number {
                font-size: 40px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }
            .section {
                padding: 56px 0;
            }
            .category-hero h1 {
                font-size: 24px;
            }
            .category-hero .lead {
                font-size: 14px;
            }
            .section-title {
                font-size: 23px;
            }
            .grid-mixed {
                gap: 18px;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .cta-title {
                font-size: 26px;
            }
            .cta-buttons .btn {
                width: 100%;
            }
            .btn-lg {
                height: 48px;
                font-size: 15px;
            }
            .strip-grid {
                flex-direction: column;
                gap: 28px;
            }
            .strip-item:not(:last-child)::after {
                display: none;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            *, *::before, *::after {
                animation-duration: .01ms !important;
                transition-duration: .01ms !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: category2 */
:root {
  --primary: #0D1F1C;
  --primary-hover: #16352F;
  --accent: #C29B5A;
  --accent-hover: #D4AF73;
  --bg: #FBFAF7;
  --bg-alt: #F7F6F2;
  --surface: #FFFFFF;
  --surface-alt: #F1EFEA;
  --text: #1D2624;
  --text-secondary: #5D6C68;
  --text-muted: #9AA6A2;
  --border: #E8E3D9;
  --border-dark: rgba(255,255,255,.14);
  --success: #2E7D5B;
  --warning: #B47B2A;
  --error: #B03A2E;
  --info: #2F6B7A;
  --radius-card: 12px;
  --radius-btn: 4px;
  --radius-badge: 999px;
  --shadow: 0 8px 30px rgba(13,31,28,.08);
  --shadow-hover: 0 12px 36px rgba(13,31,28,.14);
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --container: 1200px;
  --spacing-section: 88px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border: 0;
}

a {
  color: var(--text);
  text-decoration: none;
  transition: color .25s ease, background .25s ease, border-color .25s ease, box-shadow .25s ease, transform .25s ease;
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
  cursor: pointer;
  color: inherit;
}

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

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

.section {
  padding: var(--spacing-section) 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  border: 1px solid transparent;
  line-height: 1;
  white-space: nowrap;
  transition: all .25s ease;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  box-shadow: 0 8px 20px rgba(13,31,28,.18);
  transform: translateY(-1px);
}

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

.btn-outline-light {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,.5);
}

.btn-outline-light:hover {
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.8);
}

.btn-outline-dark {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

.btn-outline-dark:hover {
  background: rgba(13,31,28,.05);
  border-color: var(--primary);
}

.btn-lg {
  height: 52px;
  padding: 0 36px;
  font-size: 16px;
}

.text-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 2px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap .25s ease;
}

.text-link:hover {
  gap: 10px;
  color: var(--accent);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13,31,28,.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,.08);
  transition: background .3s ease, box-shadow .3s ease;
}

.site-header.scrolled {
  background: rgba(13,31,28,.97);
  box-shadow: 0 6px 24px rgba(13,31,28,.25);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  flex-shrink: 0;
}

.brand-mark svg {
  width: 32px;
  height: 32px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name {
  font-size: 19px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
}

.brand-sub {
  font-size: 10px;
  color: var(--accent);
  letter-spacing: .2em;
  margin-top: 2px;
  font-weight: 400;
}

.main-nav {
  margin-left: auto;
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav ul li a {
  display: block;
  padding: 10px 16px;
  font-size: 15px;
  font-weight: 400;
  color: rgba(255,255,255,.88);
  border-radius: 6px;
  position: relative;
  letter-spacing: .02em;
  transition: color .25s ease, background .25s ease;
}

.main-nav ul li a::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 4px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s ease;
}

.main-nav ul li a:hover::after {
  transform: scaleX(1);
}

.main-nav ul li a.active {
  color: #fff;
  font-weight: 500;
}

.main-nav ul li a.active::after {
  transform: scaleX(1);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 38px;
  padding: 0 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  background: var(--accent);
  border-radius: var(--radius-btn);
  white-space: nowrap;
  transition: all .25s ease;
}

.header-cta:hover {
  background: var(--accent-hover);
  box-shadow: 0 6px 16px rgba(194,155,90,.28);
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  flex-shrink: 0;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all .3s ease;
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Page Hero */
.page-hero {
  position: relative;
  min-height: 220px;
  display: flex;
  align-items: center;
  padding: 64px 0;
  background: linear-gradient(90deg, rgba(13,31,28,.88) 0%, rgba(13,31,28,.62) 50%, rgba(13,31,28,.28) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color: #fff;
}

.page-hero .breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,.6);
  margin-bottom: 16px;
}

.page-hero .breadcrumb a {
  color: rgba(255,255,255,.72);
  transition: color .25s ease;
}

.page-hero .breadcrumb a:hover {
  color: var(--accent);
}

.page-hero .breadcrumb .sep {
  color: rgba(255,255,255,.35);
}

.page-hero h1 {
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
  line-height: 1.3;
  margin-bottom: 10px;
}

.page-hero .hero-desc {
  font-size: 14px;
  color: rgba(255,255,255,.7);
  max-width: 560px;
  line-height: 1.7;
}

/* Intro Grid */
.intro-grid {
  padding: var(--spacing-section) 0;
  background: var(--bg);
}

.intro-grid .grid-wrap {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 48px;
  align-items: start;
}

.intro-grid .intro-text .eyebrow {
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.intro-grid .intro-text h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

.intro-grid .intro-text p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}

.intro-grid .intro-text p:last-child {
  margin-bottom: 0;
}

.intro-grid .intro-text strong {
  color: var(--primary);
  font-weight: 600;
}

.speed-card {
  background: var(--primary);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.speed-card::after {
  content: "";
  position: absolute;
  right: -30px;
  bottom: -30px;
  width: 120px;
  height: 120px;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 50%;
}

.speed-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.speed-card h3 i {
  font-style: normal;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--accent);
  border-radius: 50%;
  color: var(--accent);
  font-size: 14px;
}

.speed-list {
  position: relative;
  z-index: 1;
}

.speed-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,.1);
}

.speed-list li:last-child {
  border-bottom: none;
}

.speed-list .s-num {
  font-size: 14px;
  font-weight: 200;
  font-family: "Inter", "Helvetica Neue", sans-serif;
  color: var(--accent);
  min-width: 28px;
  text-align: right;
}

.speed-list .s-content {
  font-size: 14px;
  color: rgba(255,255,255,.74);
  line-height: 1.5;
}

.speed-list .s-content strong {
  display: block;
  font-size: 15px;
  color: #fff;
  margin-bottom: 2px;
}

/* Case Cards */
.case-section {
  padding: var(--spacing-section) 0;
  background: var(--bg-alt);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.section-head .eyebrow {
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.case-mixed {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.case-card {
  background: var(--surface);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: box-shadow .3s ease, transform .3s ease;
  border: 1px solid rgba(232,227,217,.6);
  display: flex;
  flex-direction: column;
}

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

.case-card .cover {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--surface-alt);
}

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

.case-card:hover .cover img {
  transform: scale(1.04);
}

.case-card .cover .badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  background: rgba(13,31,28,.82);
  color: var(--accent);
  border: 1px solid rgba(255,255,255,.2);
  padding: 4px 12px;
  font-size: 12px;
  border-radius: var(--radius-badge);
  font-weight: 500;
  backdrop-filter: blur(6px);
}

.case-card .case-body {
  padding: 20px 22px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.case-card .case-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 8px;
  transition: color .25s ease;
}

.case-card:hover .case-body h3 {
  color: var(--primary);
}

.case-card .case-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.case-card .case-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.case-card .case-meta .time {
  font-size: 12px;
  color: var(--text-muted);
  font-family: "Inter", "Helvetica Neue", sans-serif;
  letter-spacing: .02em;
}

.case-card .case-meta .more {
  font-size: 13px;
  color: var(--primary);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.case-card .case-meta .more:hover {
  color: var(--accent);
  gap: 8px;
}

.case-card.case-horizontal {
  flex-direction: row;
}

.case-card.case-horizontal .cover {
  width: 46%;
  aspect-ratio: auto;
  height: auto;
  min-height: 200px;
}

.case-card.case-horizontal .case-body {
  width: 54%;
}

.case-card.case-horizontal .case-body h3 {
  font-size: 20px;
}

.case-card.case-horizontal .case-body p {
  -webkit-line-clamp: 3;
}

.case-card.case-small .cover {
  aspect-ratio: 16 / 10;
}

.case-card.case-small .case-body {
  padding: 16px 18px 18px;
}

.case-card.case-small .case-body h3 {
  font-size: 16px;
}

.case-card.case-small .case-body p {
  font-size: 13px;
  -webkit-line-clamp: 2;
}

.case-card.case-small .case-meta {
  margin-top: 12px;
  padding-top: 10px;
}

/* FAQ */
.faq-section {
  padding: var(--spacing-section) 0;
  background: var(--bg);
}

.faq-layout {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 48px;
  align-items: start;
}

.faq-left .faq-contact {
  background: var(--surface);
  border: 1px solid var(--accent);
  border-radius: var(--radius-card);
  padding: 28px;
  position: sticky;
  top: 96px;
}

.faq-left .faq-contact h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 8px;
}

.faq-left .faq-contact .sub {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.6;
}

.faq-left .contact-line {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
  padding: 8px 0;
  border-bottom: 1px dashed var(--border);
}

.faq-left .contact-line:last-of-type {
  border-bottom: none;
}

.faq-left .contact-line i {
  font-style: normal;
  font-size: 16px;
  color: var(--accent);
  min-width: 24px;
}

.faq-accordion {
  border-top: 1px solid var(--border);
}

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

.faq-item .faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 8px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
  transition: color .25s ease, font-weight .25s ease;
  text-align: left;
  width: 100%;
  background: none;
  border: none;
  font-family: inherit;
}

.faq-item .faq-q .icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.faq-item .faq-q .icon::before,
.faq-item .faq-q .icon::after {
  content: "";
  position: absolute;
  background: var(--text-muted);
  transition: transform .3s ease, background .3s ease;
}

.faq-item .faq-q .icon::before {
  width: 12px;
  height: 1.5px;
}

.faq-item .faq-q .icon::after {
  width: 1.5px;
  height: 12px;
}

.faq-item.active .faq-q .icon::before {
  transform: rotate(180deg);
}

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

.faq-item.active .faq-q {
  color: var(--primary);
  font-weight: 600;
}

.faq-item.active .faq-q .icon::before,
.faq-item.active .faq-q .icon::after {
  background: var(--accent);
}

.faq-item .faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}

.faq-item .faq-a-inner {
  padding: 0 8px 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-secondary);
}

/* Tags */
.tags-section {
  padding: var(--spacing-section) 0;
  background: var(--bg-alt);
}

.tags-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  max-width: 860px;
  margin: 0 auto;
}

.tag {
  display: inline-block;
  padding: 6px 16px;
  font-size: 13px;
  color: var(--text-secondary);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-badge);
  transition: all .25s ease;
  cursor: default;
}

.tag:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.tags-section .section-head {
  justify-content: center;
  text-align: center;
  margin-bottom: 32px;
}

/* CTA */
.cta-section {
  position: relative;
  padding: 88px 0;
  background: var(--primary);
  color: #fff;
  text-align: center;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at 30% 20%, rgba(194,155,90,.15) 0%, transparent 60%);
}

.cta-inner {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px;
}

.cta-inner .eyebrow {
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 14px;
  text-transform: uppercase;
}

.cta-inner h2 {
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  line-height: 1.35;
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}

.cta-inner p {
  font-size: 15px;
  color: rgba(255,255,255,.72);
  line-height: 1.7;
  margin-bottom: 28px;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.cta-note {
  margin-top: 16px;
  font-size: 12px;
  color: rgba(255,255,255,.5);
}

/* Footer */
.site-footer {
  background: var(--primary);
  color: rgba(255,255,255,.7);
  padding: 0;
}

.site-footer .container {
  padding-top: 64px;
  padding-bottom: 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}

.footer-brand .brand-name {
  font-size: 18px;
  color: #fff;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,.6);
  margin-top: 16px;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}

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

.footer-col ul li a {
  font-size: 14px;
  color: rgba(255,255,255,.6);
  transition: color .25s ease, padding-left .25s ease;
}

.footer-col ul li a:hover {
  color: var(--accent);
  padding-left: 4px;
}

.footer-contact .contact-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  margin-bottom: 12px;
  color: rgba(255,255,255,.6);
}

.footer-contact .contact-row .icon {
  font-style: normal;
  color: var(--accent);
  min-width: 20px;
  font-size: 15px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 24px;
  font-size: 13px;
  color: rgba(255,255,255,.4);
}

.footer-bottom .fb-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

/* Scroll top */
.scroll-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 99;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: var(--primary);
  border: none;
  border-radius: 50%;
  font-size: 18px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all .3s ease;
  box-shadow: 0 6px 20px rgba(13,31,28,.2);
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top:hover {
  background: var(--accent-hover);
  transform: translateY(-3px);
}

/* Responsive */
@media (max-width: 1024px) {
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  
  .case-mixed {
    grid-template-columns: 1fr 1fr;
  }
  
  .case-card.case-horizontal {
    flex-direction: column;
  }
  
  .case-card.case-horizontal .cover {
    width: 100%;
    aspect-ratio: 16 / 10;
  }
  
  .case-card.case-horizontal .case-body {
    width: 100%;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-section: 56px;
  }
  
  .header-inner {
    height: 60px;
  }
  
  .main-nav {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: rgba(13,31,28,.98);
    backdrop-filter: blur(12px);
    padding: 12px 20px 20px;
    transform: translateY(-120%);
    opacity: 0;
    transition: transform .35s ease, opacity .35s ease;
    border-bottom: 1px solid rgba(255,255,255,.1);
    box-shadow: 0 12px 30px rgba(0,0,0,.25);
    margin-left: 0;
  }
  
  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
  }
  
  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  
  .main-nav ul li a {
    padding: 14px 12px;
    font-size: 16px;
    border-radius: 0;
    border-bottom: 1px solid rgba(255,255,255,.06);
  }
  
  .main-nav ul li a::after {
    display: none;
  }
  
  .header-cta {
    display: none;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .page-hero {
    min-height: 180px;
    padding: 40px 0;
  }
  
  .page-hero h1 {
    font-size: 26px;
  }
  
  .intro-grid .grid-wrap {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .faq-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  
  .faq-left .faq-contact {
    position: static;
  }
  
  .case-mixed {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .cta-section {
    padding: 56px 0;
  }
  
  .cta-inner h2 {
    font-size: 24px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  
  .footer-bottom {
    flex-direction: column;
    justify-content: center;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  
  .btn-lg {
    width: 100%;
  }
  
  .cta-buttons {
    flex-direction: column;
    width: 100%;
  }
  
  .section-head h2 {
    font-size: 24px;
  }
  
  .page-hero h1 {
    font-size: 24px;
  }
  
  .case-card .cover {
    aspect-ratio: 16 / 10;
  }
  
  .case-card.case-horizontal .cover {
    aspect-ratio: 16 / 10;
  }
  
  .speed-card {
    padding: 24px 18px;
  }
  
  .faq-item .faq-q {
    font-size: 15px;
    padding: 16px 4px;
  }
}

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