/* roulang page: index */
/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.75;
  letter-spacing: 0.2px;
  color: #1A1D21;
  background: #F6F7F8;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: #1A1D21; text-decoration: none; transition: color .2s ease; }
a:hover { color: #E85D2A; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input { font-family: inherit; }
ul, ol { list-style: none; }
:focus-visible { outline: 2px solid #E85D2A; outline-offset: 2px; }

/* ===== Variables ===== */
:root {
  --bg-body: #F6F7F8;
  --bg-white: #FFFFFF;
  --text-dark: #1A1D21;
  --text-med: #5A6068;
  --text-light: #9AA0A8;
  --brand-orange: #E85D2A;
  --brand-orange-hover: #C94A1D;
  --brand-orange-active: #B03E16;
  --signal-teal: #3D5A6C;
  --border-color: #E8EAEC;
  --input-border: #D8DBDE;
  --success: #2A7F5D;
  --warning: #B98A2F;
  --error: #BF4A3C;
  --dark-bg: #1A1D21;
  --dark-bg-2: #22272B;
  --dark-footer: #14171A;
  --text-on-dark: #C8CDD2;
  --radius: 4px;
  --radius-sm: 2px;
  --shadow-hover: 0 8px 24px rgba(26, 29, 33, 0.06);
  --shadow-float: 0 12px 32px rgba(26, 29, 33, 0.1);
  --container: 1200px;
  --spacing-section: 88px;
  --spacing-section-mb: 52px;
}

/* ===== Utility ===== */
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section-pad { padding: var(--spacing-section) 0; }
@media (max-width: 768px) {
  .section-pad { padding: var(--spacing-section-mb) 0; }
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: box-shadow .3s ease;
}
.site-header.scrolled { box-shadow: 0 4px 20px rgba(0,0,0,.06); }
.brand-row {
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  transition: max-height .3s ease, opacity .3s ease;
  overflow: hidden;
  padding: 0 24px;
  max-width: 100%;
}
.site-header.scrolled .brand-row { max-height: 0; opacity: 0; border-bottom: none; padding: 0 24px; }
.brand-left {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--dark-bg);
  border-radius: 4px;
  flex-shrink: 0;
}
.brand-icon svg { width: 14px; height: 14px; }
.brand-text {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-dark);
  letter-spacing: -.2px;
  white-space: nowrap;
}
.brand-text sup {
  font-size: 10px;
  font-weight: 500;
  color: var(--text-light);
  margin-left: 4px;
  letter-spacing: .5px;
}
.brand-right {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--text-med);
}
.brand-right a { color: var(--text-med); font-weight: 500; }
.brand-right a:hover { color: var(--brand-orange); }
.lang-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 20px;
  padding: 0 4px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-med);
  background: #F0F2F4;
  border: 1px solid var(--border-color);
  border-radius: 2px;
  cursor: default;
}

.nav-row {
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  max-width: 100%;
}
.nav-left {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 52px;
}
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-med);
  line-height: 52px;
  position: relative;
  white-space: nowrap;
  transition: color .2s;
}
.nav-links a:hover { color: var(--text-dark); }
.nav-links a.active {
  color: var(--text-dark);
  font-weight: 600;
}
.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--brand-orange);
}
.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}
.nav-search {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-light);
  cursor: pointer;
  padding: 6px 8px;
  border-radius: 4px;
  border: 1px solid transparent;
  transition: all .2s;
}
.nav-search:hover { color: var(--text-dark); background: #F0F2F4; }
.nav-search svg { width: 14px; height: 14px; flex-shrink: 0; }
.trend-entry {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-light);
  padding-left: 16px;
  border-left: 1px solid var(--border-color);
}
.trend-entry .trend-label {
  display: flex;
  align-items: center;
  gap: 4px;
  font-weight: 500;
  white-space: nowrap;
}
.trend-entry .trend-label svg { width: 12px; height: 12px; }
.trend-entry a {
  color: var(--text-med);
  font-weight: 500;
  font-size: 12px;
  white-space: nowrap;
}
.trend-entry a:hover { color: var(--brand-orange); }
.mobile-btns {
  display: none;
  align-items: center;
  gap: 12px;
}
.mobile-btns button {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  color: var(--text-dark);
  background: transparent;
  transition: background .2s;
}
.mobile-btns button:hover { background: #F0F2F4; }

/* Search expand */
.search-expand {
  position: fixed;
  top: 52px;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--border-color);
  padding: 16px 24px;
  display: none;
  z-index: 999;
  box-shadow: 0 8px 24px rgba(0,0,0,.08);
}
.search-expand.open { display: block; }
.search-expand .search-box {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  align-items: center;
}
.search-expand input {
  flex: 1;
  height: 40px;
  border: 1px solid var(--input-border);
  border-right: none;
  border-radius: 4px 0 0 4px;
  padding: 0 16px;
  font-size: 14px;
  color: var(--text-dark);
  background: #fff;
  outline: none;
  transition: border-color .2s;
}
.search-expand input:focus { border-color: var(--brand-orange); }
.search-expand .search-btn {
  height: 40px;
  padding: 0 20px;
  background: var(--brand-orange);
  color: #fff;
  border-radius: 0 4px 4px 0;
  font-size: 14px;
  font-weight: 500;
  transition: background .2s;
}
.search-expand .search-btn:hover { background: var(--brand-orange-hover); }

/* Mobile menu drawer */
.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background: rgba(26,29,33,.4);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s, visibility .3s;
}
.mobile-menu-overlay.open { opacity: 1; visibility: visible; }
.mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 320px;
  max-width: 85vw;
  height: 100vh;
  background: #fff;
  z-index: 1001;
  overflow-y: auto;
  padding: 24px;
  transition: right .35s ease;
  box-shadow: -12px 0 32px rgba(0,0,0,.1);
}
.mobile-menu.open { right: 0; }
.mobile-menu .menu-close {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 16px;
}
.mobile-menu .menu-close button {
  width: 32px;
  height: 32px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-med);
  background: #F0F2F4;
  font-size: 16px;
}
.mobile-menu .menu-brand {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.mobile-menu .menu-nav { margin-bottom: 24px; }
.mobile-menu .menu-nav a {
  display: block;
  padding: 12px 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-dark);
  border-bottom: 1px solid #F0F2F4;
  transition: color .2s;
}
.mobile-menu .menu-nav a:hover { color: var(--brand-orange); }
.mobile-menu .menu-nav a.active { color: var(--brand-orange); }
.mobile-menu .menu-trends {
  padding: 16px;
  background: #F6F7F8;
  border-radius: 4px;
  margin-bottom: 24px;
}
.mobile-menu .menu-trends h4 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-med);
  margin-bottom: 8px;
}
.mobile-menu .menu-trends a {
  display: inline-block;
  font-size: 13px;
  color: var(--text-med);
  background: #fff;
  padding: 4px 10px;
  border-radius: 2px;
  border: 1px solid var(--border-color);
  margin-right: 8px;
  margin-top: 4px;
  transition: all .2s;
}
.mobile-menu .menu-trends a:hover { color: var(--brand-orange); border-color: var(--brand-orange); }
.mobile-menu .menu-contact {
  font-size: 13px;
  color: var(--text-med);
  line-height: 2;
}
.mobile-menu .menu-contact strong { color: var(--text-dark); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 24px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 4px;
  transition: all .2s ease;
  white-space: nowrap;
  border: none;
  cursor: pointer;
}
.btn-primary {
  background: var(--brand-orange);
  color: #fff !important;
}
.btn-primary:hover {
  background: var(--brand-orange-hover);
  color: #fff !important;
  box-shadow: 0 4px 12px rgba(232, 93, 42, 0.25);
}
.btn-primary:active { background: var(--brand-orange-active); }
.btn-outline {
  background: transparent;
  border: 1px solid var(--signal-teal);
  color: var(--text-dark);
}
.btn-outline:hover {
  background: rgba(61, 90, 108, 0.05);
  color: var(--text-dark);
  border-color: var(--signal-teal);
  box-shadow: none;
}
.btn-outline-light {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.6);
  color: #fff !important;
}
.btn-outline-light:hover {
  background: #fff;
  color: var(--text-dark) !important;
  border-color: #fff;
}
.btn-lg { height: 46px; padding: 0 32px; font-size: 15px; }
.btn-block { width: 100%; }

/* ===== Section Header ===== */
.sec-header { margin-bottom: 40px; }
.sec-header .sec-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--brand-orange);
  text-transform: uppercase;
  display: block;
  margin-bottom: 8px;
}
.sec-header h2 {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.5px;
  color: var(--text-dark);
  position: relative;
  padding-left: 16px;
}
.sec-header h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: var(--brand-orange);
}
.sec-header .sec-desc {
  font-size: 15px;
  color: var(--text-med);
  margin-top: 12px;
  max-width: 720px;
  line-height: 1.7;
}
@media (max-width: 768px) {
  .sec-header h2 { font-size: 22px; }
}

/* ===== Hero ===== */
.hero {
  background: var(--dark-bg);
  position: relative;
  overflow: hidden;
}
.hero .container {
  display: flex;
  align-items: center;
  gap: 60px;
  min-height: 520px;
  padding-top: 64px;
  padding-bottom: 64px;
}
.hero-left { flex: 0 0 55%; max-width: 55%; }
.hero-right { flex: 0 0 42%; max-width: 42%; }
.hero h1 {
  font-size: 40px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.5px;
  color: #ffffff;
  margin-bottom: 20px;
}
.hero-sub {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-on-dark);
  margin-bottom: 32px;
  max-width: 540px;
}
.hero-ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 44px;
}
.hero-tags {
  display: flex;
  align-items: center;
  gap: 0;
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: 20px;
}
.hero-tag {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,0.7);
  padding: 0 24px;
  border-right: 1px solid rgba(255,255,255,0.15);
}
.hero-tag:first-child { padding-left: 0; }
.hero-tag:last-child { border-right: none; }
.hero-tag svg { width: 14px; height: 14px; color: var(--brand-orange); flex-shrink: 0; }
.hero-visual {
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.15);
  aspect-ratio: 4 / 3;
  background: #2A2E33;
}
.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  animation: heroFade 12s ease-in-out infinite;
}
@keyframes heroFade {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.85; }
}
@media (max-width: 1024px) {
  .hero .container { gap: 32px; min-height: 460px; }
  .hero h1 { font-size: 32px; }
}
@media (max-width: 768px) {
  .hero .container { flex-direction: column; padding-top: 40px; padding-bottom: 40px; gap: 24px; }
  .hero-left, .hero-right { flex: none; max-width: 100%; width: 100%; }
  .hero h1 { font-size: 28px; }
  .hero-sub { font-size: 15px; }
  .hero-tags { flex-wrap: wrap; gap: 12px 0; }
  .hero-tag { padding: 0 16px; }
}

/* ===== Stats ===== */
.stats-band {
  background: var(--dark-bg);
  padding: 48px 0;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.stat-item {
  text-align: left;
  padding: 0 24px;
  border-left: 2px solid rgba(232, 93, 42, 0.6);
}
.stat-item .stat-num {
  font-size: 34px;
  font-weight: 700;
  color: var(--brand-orange);
  font-feature-settings: "tnum";
  line-height: 1.2;
}
.stat-item .stat-label {
  font-size: 13px;
  color: rgba(255,255,255,0.65);
  margin-top: 6px;
}
@media (max-width: 768px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .stat-item { padding: 0 12px; }
  .stat-item .stat-num { font-size: 26px; }
}
@media (max-width: 520px) {
  .stats-grid { grid-template-columns: 1fr; }
}

/* ===== Capabilities (Products) ===== */
.capabilities { background: var(--bg-body); }
.cap-grid {
  display: flex;
  gap: 48px;
  align-items: flex-start;
}
.cap-dir {
  flex: 0 0 33.333%;
  max-width: 33.333%;
  position: sticky;
  top: 72px;
}
.cap-dir-title {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--text-light);
  margin-bottom: 16px;
  text-transform: uppercase;
}
.cap-dir-list li { margin-bottom: 4px; }
.cap-dir-list a {
  display: block;
  padding: 10px 12px;
  font-size: 14px;
  color: var(--text-med);
  border-left: 2px solid transparent;
  border-radius: 0 4px 4px 0;
  transition: all .2s;
}
.cap-dir-list a:hover { color: var(--text-dark); background: #fff; border-left-color: var(--brand-orange); }
.cap-items { flex: 1; }
.cap-item {
  display: flex;
  gap: 20px;
  padding: 32px 0;
  border-bottom: 1px solid var(--border-color);
  transition: background .2s, transform .25s ease;
  background: transparent;
}
.cap-item:hover {
  background: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}
@media (max-width: 1024px) {
  .cap-grid { flex-direction: column; gap: 32px; }
  .cap-dir { position: static; flex: none; max-width: 100%; width: 100%; }
  .cap-dir-list { display: flex; flex-wrap: wrap; gap: 8px; }
  .cap-dir-list a { border-left: none; border-bottom: 2px solid transparent; border-radius: 0; padding: 6px 10px; font-size: 13px; }
  .cap-dir-list a:hover { background: transparent; border-bottom-color: var(--brand-orange); }
  .cap-dir-title { margin-bottom: 8px; }
}
@media (max-width: 768px) {
  .cap-item { flex-direction: column; gap: 12px; padding: 24px 0; }
}
.cap-icon {
  flex: 0 0 48px;
  width: 48px;
  height: 48px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--signal-teal);
}
.cap-icon svg { width: 20px; height: 20px; }
@media (max-width: 768px) {
  .cap-icon { flex: 0 0 40px; width: 40px; height: 40px; }
  .cap-icon svg { width: 18px; height: 18px; }
}
.cap-body h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 6px;
}
.cap-body p {
  font-size: 14px;
  color: var(--text-med);
  line-height: 1.7;
}

/* ===== Scenarios ===== */
.scenarios { background: #fff; }
.scen-main {
  width: 100%;
  margin-bottom: 24px;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  position: relative;
  aspect-ratio: 16/5;
  min-height: 240px;
  display: block;
}
.scen-main img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.scen-main:hover img { transform: scale(1.03); }
.scen-main .scen-label {
  position: absolute;
  left: 20px;
  bottom: 16px;
  background: rgba(26,29,33,0.78);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 4px;
  backdrop-filter: blur(4px);
}
.scen-grid2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.scen-card {
  border: 1px solid var(--border-color);
  border-radius: 4px;
  overflow: hidden;
  background: #fff;
  transition: box-shadow .25s ease, transform .25s ease;
  display: block;
}
.scen-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.scen-card .scen-img {
  aspect-ratio: 16/7;
  overflow: hidden;
}
.scen-card .scen-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.scen-card:hover .scen-img img { transform: scale(1.03); }
.scen-card .scen-info { padding: 16px 20px 20px; }
.scen-card .scen-info h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 4px;
}
.scen-card .scen-info p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.6;
}
@media (max-width: 768px) {
  .scen-grid2 { grid-template-columns: 1fr; }
  .scen-main { aspect-ratio: 16/9; }
}

/* ===== Cases ===== */
.cases {
  background: var(--dark-bg);
  position: relative;
  overflow: hidden;
}
.cases .sec-header h2 { color: #fff; }
.cases .sec-header .sec-desc { color: rgba(255,255,255,0.6); }
.cases .sec-header h2::before { background: var(--brand-orange); }
.case-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 32px;
  align-items: stretch;
}
.case-main {
  background: var(--dark-bg-2);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 4px;
  overflow: hidden;
  display: block;
  transition: border-color .25s ease;
}
.case-main:hover { border-color: rgba(232,93,42,0.5); }
.case-main .case-img { aspect-ratio: 4/3; overflow: hidden; }
.case-main .case-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.case-main:hover .case-img img { transform: scale(1.03); }
.case-main .case-body { padding: 24px; }
.case-main .case-body h3 { font-size: 18px; font-weight: 600; color: #fff; margin-bottom: 8px; transition: color .2s; }
.case-main:hover .case-body h3 { color: var(--brand-orange); }
.case-main .case-body p { font-size: 13px; color: rgba(255,255,255,0.6); line-height: 1.7; }
.case-side { display: flex; flex-direction: column; gap: 32px; }
.case-side-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.case-side-item:last-child { border-bottom: none; }
.case-side-item .thumb {
  flex: 0 0 120px;
  width: 120px;
  aspect-ratio: 4/3;
  border-radius: 4px;
  overflow: hidden;
}
.case-side-item .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.case-side-item:hover .thumb img { transform: scale(1.03); }
.case-side-item .info h3 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  line-height: 1.5;
  margin-bottom: 6px;
  transition: color .2s;
}
.case-side-item:hover .info h3 { color: var(--brand-orange); }
.case-side-item .info p { font-size: 13px; color: rgba(255,255,255,0.5); line-height: 1.6; }
.case-side-item .info .tag {
  display: inline-block;
  font-size: 12px;
  color: var(--brand-orange);
  background: rgba(232,93,42,0.12);
  padding: 2px 8px;
  border-radius: 2px;
  margin-bottom: 8px;
}
@media (max-width: 1024px) {
  .case-grid { grid-template-columns: 1fr; }
  .case-side { flex-direction: row; flex-wrap: wrap; gap: 16px; }
  .case-side-item { flex: 1 1 45%; }
}
@media (max-width: 768px) {
  .case-side { flex-direction: column; }
  .case-side-item { flex: none; }
}

/* ===== News / CMS ===== */
.news-section { background: var(--bg-body); }
.news-wrap {
  display: flex;
  gap: 32px;
}
.news-main {
  flex: 0 0 58.333%;
  max-width: 58.333%;
}
.news-right {
  flex: 1;
  max-width: 41.667%;
}
.news-card-large {
  display: block;
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  overflow: hidden;
  transition: box-shadow .25s ease, transform .25s ease;
}
.news-card-large:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.news-card-large .news-img { aspect-ratio: 16/8; overflow: hidden; }
.news-card-large .news-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.news-card-large:hover .news-img img { transform: scale(1.03); }
.news-card-large .news-body { padding: 20px 24px 24px; }
.news-card-large .news-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-dark);
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color .2s;
}
.news-card-large:hover .news-body h3 { color: var(--brand-orange); }
.news-card-large .news-body > p {
  font-size: 14px;
  color: var(--text-med);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}
.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-light);
  flex-wrap: wrap;
}
.news-meta .cate-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-med);
  background: #EEF0F2;
  padding: 2px 10px;
  border-radius: 2px;
}
.news-meta time { font-feature-settings: "tnum"; }
.news-meta .read-more {
  color: var(--brand-orange);
  font-weight: 500;
  font-size: 13px;
  margin-left: auto;
}
.news-list {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  overflow: hidden;
}
.news-list-item {
  display: block;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  transition: background .2s;
}
.news-list-item:last-child { border-bottom: none; }
.news-list-item:hover { background: #FAFBFC; }
.news-list-item h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-dark);
  line-height: 1.5;
  margin-bottom: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color .2s;
}
.news-list-item:hover h4 { color: var(--brand-orange); }
.news-list-item p {
  font-size: 13px;
  color: var(--text-med);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
}
.news-list-item .news-meta .cate-tag { font-size: 11px; padding: 1px 8px; }
.news-list-item .news-meta time { font-size: 12px; }
.news-more-btn {
  display: flex;
  justify-content: center;
  margin-top: 32px;
}
.news-empty {
  background: #fff;
  border: 1px dashed var(--border-color);
  border-radius: 4px;
  padding: 48px 24px;
  text-align: center;
}
.news-empty svg { width: 32px; height: 32px; color: var(--text-light); margin: 0 auto 12px; display: block; }
.news-empty p { font-size: 13px; color: var(--text-light); }
@media (max-width: 1024px) {
  .news-wrap { flex-direction: column; }
  .news-main, .news-right { flex: none; max-width: 100%; width: 100%; }
}

/* ===== Pricing ===== */
.pricing { background: var(--bg-body); }
.price-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
  align-items: stretch;
}
.price-card {
  background: #ECEEF0;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 32px 28px;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: box-shadow .25s ease, transform .25s ease;
}
.price-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.price-card .price-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 12px;
}
.price-card .price-amount {
  font-size: 30px;
  font-weight: 700;
  color: var(--text-dark);
  font-feature-settings: "tnum";
  line-height: 1.2;
  margin-bottom: 4px;
}
.price-card .price-amount span {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-light);
  margin-left: 4px;
}
.price-card .price-desc {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 20px;
  line-height: 1.6;
}
.price-card .price-list {
  flex: 1;
  margin-bottom: 24px;
}
.price-card .price-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  color: var(--text-med);
  line-height: 1.6;
  padding: 6px 0;
}
.price-card .price-list li svg {
  width: 14px;
  height: 14px;
  color: var(--success);
  flex-shrink: 0;
  margin-top: 4px;
}
.price-card.featured {
  background: #fff;
  border-top: 2px solid var(--brand-orange);
  box-shadow: 0 4px 20px rgba(26,29,33,0.05);
}
.price-card.featured .price-name { color: var(--brand-orange); }
.price-card .featured-badge {
  position: absolute;
  top: 0;
  left: 28px;
  transform: translateY(-50%);
  background: var(--brand-orange);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 2px;
  letter-spacing: .5px;
}
@media (max-width: 1024px) {
  .price-grid { grid-template-columns: 1fr; max-width: 520px; margin: 0 auto; }
}

/* ===== FAQ ===== */
.faq-section { background: #fff; }
.faq-wrap { max-width: 800px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--border-color);
  padding: 0;
}
.faq-item:first-child { border-top: 1px solid var(--border-color); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 4px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-dark);
  background: transparent;
  width: 100%;
  text-align: left;
  transition: color .2s;
}
.faq-q:hover { color: var(--brand-orange); }
.faq-q .faq-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.faq-q .faq-icon::before,
.faq-q .faq-icon::after {
  content: "";
  position: absolute;
  background: var(--text-med);
  border-radius: 1px;
  transition: all .3s ease;
}
.faq-q .faq-icon::before { width: 12px; height: 2px; }
.faq-q .faq-icon::after { width: 2px; height: 12px; }
.faq-item.open .faq-q .faq-icon::before,
.faq-item.open .faq-q .faq-icon::after { transform: rotate(45deg); background: var(--brand-orange); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
  border-left: 2px solid var(--brand-orange);
  margin-left: 4px;
}
.faq-a-inner {
  padding: 0 16px 20px;
  font-size: 14px;
  color: var(--text-med);
  line-height: 1.7;
}

/* ===== CTA ===== */
.cta-section {
  background: var(--dark-bg);
  position: relative;
  overflow: hidden;
  padding: 80px 0;
  text-align: center;
}
.cta-section::before {
  content: "S";
  position: absolute;
  right: 4%;
  top: 50%;
  transform: translateY(-50%);
  font-size: 360px;
  font-weight: 700;
  color: rgba(255,255,255,0.04);
  line-height: 1;
  pointer-events: none;
  user-select: none;
}
.cta-inner { position: relative; z-index: 1; max-width: 640px; margin: 0 auto; }
.cta-inner h2 {
  font-size: 26px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: -.3px;
}
.cta-inner p {
  font-size: 15px;
  color: var(--text-on-dark);
  margin-bottom: 28px;
  line-height: 1.7;
}
@media (max-width: 768px) {
  .cta-section { padding: 56px 0; }
  .cta-inner h2 { font-size: 22px; }
}

/* ===== Footer ===== */
.site-footer {
  background: var(--dark-footer);
  color: rgba(255,255,255,0.6);
  padding-top: 56px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .footer-logo {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}
.footer-brand .footer-logo sup {
  font-size: 10px;
  font-weight: 500;
  color: rgba(255,255,255,0.4);
  letter-spacing: .5px;
}
.footer-brand p {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255,255,255,0.5);
  max-width: 260px;
}
.footer-brand .footer-lang {
  display: inline-block;
  margin-top: 16px;
  font-size: 11px;
  color: rgba(255,255,255,0.4);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 2px;
  padding: 2px 8px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul a {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  line-height: 1.5;
  transition: color .2s;
}
.footer-col ul a:hover { color: var(--brand-orange); }
.footer-contact {
  font-size: 13px;
  line-height: 2;
  color: rgba(255,255,255,0.5);
}
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.footer-contact li svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  margin-top: 5px;
  color: rgba(255,255,255,0.3);
}
.footer-bottom {
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12px;
  color: rgba(255,255,255,0.35);
}
.footer-bottom .domain { font-family: monospace; letter-spacing: .3px; }
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: #F6F7F8; }
::-webkit-scrollbar-thumb { background: #C2C7CD; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #9AA0A8; }

/* ===== Animations ===== */
.fade-up {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .4s ease-out, transform .4s ease-out;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ===== Responsive Nav ===== */
@media (max-width: 768px) {
  .brand-row { padding: 0 16px; }
  .nav-row { padding: 0 16px; }
  .brand-right .brand-contact { display: none; }
  .nav-left { flex: 1; }
  .nav-links { display: none; }
  .nav-right .trend-entry { display: none; }
  .nav-right .nav-search span { display: none; }
  .mobile-btns { display: flex; }
  .nav-right { gap: 8px; }
}
@media (min-width: 769px) {
  .mobile-btns { display: none; }
}

/* roulang page: article */
:root {
  --bg-body: #F6F7F8;
  --bg-white: #FFFFFF;
  --bg-dark: #1A1D21;
  --bg-dark-deep: #14171A;
  --bg-soft: #EEF0F2;
  --text-primary: #1A1D21;
  --text-secondary: #5A6068;
  --text-muted: #9AA0A8;
  --text-light: #C8CDD2;
  --text-white: #FFFFFF;
  --accent: #E85D2A;
  --accent-hover: #C94A1D;
  --accent-active: #B03E16;
  --aux: #3D5A6C;
  --border: #E8EAEC;
  --border-strong: #D8DBDE;
  --success: #2A7F5D;
  --warning: #B98A2F;
  --error: #BF4A3C;
  --radius: 4px;
  --radius-sm: 2px;
  --shadow-hover: 0 8px 24px rgba(26,29,33,0.06);
  --shadow-float: 0 12px 32px rgba(26,29,33,0.1);
  --container: 1200px;
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --transition: 0.2s ease;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-main);
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-primary);
  background: var(--bg-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font-family: inherit;
  cursor: pointer;
  background: none;
  border: none;
}
input {
  font-family: inherit;
}
ul, ol {
  list-style: none;
}
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-body);
}
::-webkit-scrollbar-thumb {
  background: #C2C7CD;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #A8ADB3;
}
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 24px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 4px 12px rgba(232,93,42,0.25);
}
.btn-primary:active {
  background: var(--accent-active);
}
.btn-outline {
  background: transparent;
  border-color: var(--aux);
  color: var(--text-primary);
}
.btn-outline:hover {
  background: rgba(61,90,108,0.06);
  border-left: 2px solid var(--accent);
}
.site-header {
  position: relative;
  z-index: 100;
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
}
.header-top {
  height: 44px;
  border-bottom: 1px solid var(--border);
}
.header-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.2px;
}
.brand-mark {
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid var(--accent);
  border-radius: 3px;
  position: relative;
}
.brand-mark::before {
  content: "";
  position: absolute;
  left: 4px;
  right: 4px;
  top: 50%;
  height: 1.5px;
  background: var(--accent);
  transform: translateY(-50%);
}
.brand-mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 4px;
  bottom: 4px;
  width: 1.5px;
  background: var(--accent);
  transform: translateX(-50%);
}
.brand sup {
  font-size: 10px;
  font-weight: 500;
  color: var(--text-muted);
  margin-left: 2px;
  letter-spacing: 0.5px;
}
.header-top-right {
  display: flex;
  align-items: center;
  gap: 14px;
}
.top-contact {
  font-size: 13px;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color var(--transition);
}
.top-contact:hover {
  color: var(--accent);
}
.top-contact svg {
  width: 14px;
  height: 14px;
}
.top-divider {
  width: 1px;
  height: 14px;
  background: var(--border-strong);
}
.top-lang {
  font-size: 12px;
  color: var(--text-secondary);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 2px 6px;
  line-height: 1.4;
}
.header-nav {
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.92);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 99;
}
.header-nav-inner {
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 100%;
}
.nav-links a {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  height: 100%;
  transition: color var(--transition);
}
.nav-links a:hover {
  color: var(--text-primary);
}
.nav-links a.active {
  color: var(--text-primary);
  font-weight: 600;
}
.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 0;
  height: 2px;
  background: var(--accent);
}
.nav-tools {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.search-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 6px 12px;
  transition: all var(--transition);
}
.search-btn:hover {
  border-color: var(--aux);
  color: var(--text-primary);
}
.search-btn svg {
  width: 14px;
  height: 14px;
}
.hot-trends {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
}
.trend-icon {
  display: inline-flex;
  align-items: center;
  margin-right: 2px;
}
.trend-icon svg {
  width: 13px;
  height: 13px;
}
.hot-trends a {
  color: var(--text-secondary);
  transition: color var(--transition);
}
.hot-trends a:hover {
  color: var(--accent);
}
.hot-trends .trend-sep {
  color: var(--border-strong);
}
.menu-toggle {
  display: none;
  width: 36px;
  height: 36px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
}
.menu-toggle svg {
  width: 18px;
  height: 18px;
}
.search-panel {
  display: none;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  background: var(--bg-white);
}
.search-panel.open {
  display: block;
}
.search-panel-inner {
  display: flex;
  gap: 12px;
  max-width: 720px;
}
.search-panel-inner input {
  flex: 1;
  height: 40px;
  padding: 0 16px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  font-size: 14px;
  color: var(--text-primary);
  background: var(--bg-body);
  transition: border-color var(--transition);
}
.search-panel-inner input:focus {
  outline: none;
  border-color: var(--accent);
}
.search-panel-inner .btn {
  flex-shrink: 0;
}
.mobile-drawer {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: var(--bg-white);
  transform: translateX(100%);
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
  padding: 24px;
  visibility: hidden;
}
.mobile-drawer.open {
  transform: translateX(0);
  visibility: visible;
}
.mobile-drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}
.menu-close {
  width: 36px;
  height: 36px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text-primary);
}
.mobile-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}
.mobile-links a {
  display: block;
  padding: 14px 0;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  transition: color var(--transition);
}
.mobile-links a.active {
  color: var(--accent);
  font-weight: 600;
}
.mobile-links a:hover {
  color: var(--accent);
}
.mobile-contact {
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.8;
}
.mobile-contact strong {
  color: var(--text-primary);
  font-weight: 600;
}
.article-wrapper {
  padding: 48px 0 0;
  min-height: calc(100vh - 300px);
}
.container-narrow {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 24px;
}
.article-main {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px 56px;
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition);
}
.breadcrumb a:hover {
  color: var(--accent);
}
.breadcrumb .sep {
  color: var(--text-muted);
}
.breadcrumb .current {
  color: var(--text-primary);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 420px;
}
.article-header {
  margin-bottom: 24px;
}
.article-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}
.article-meta .meta-cat {
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding: 0 10px;
  background: var(--bg-soft);
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
}
.article-meta .meta-date {
  display: inline-flex;
  align-items: center;
}
.article-meta .meta-date::before {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--border-strong);
  margin: 0 8px;
}
.article-meta .meta-source {
  display: inline-flex;
  align-items: center;
}
.article-meta .meta-source::before {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--border-strong);
  margin: 0 8px;
}
.article-hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0 0 32px;
}
.article-body {
  max-width: 720px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-primary);
  letter-spacing: 0.2px;
}
.article-body p {
  margin: 1.5em 0;
}
.article-body h3 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  margin: 1.6em 0 0.8em;
  padding-left: 12px;
  border-left: 2px solid var(--accent);
}
.article-body h4 {
  font-size: 16px;
  font-weight: 600;
  margin: 1.4em 0 0.6em;
}
.article-body img {
  width: 100%;
  border-radius: var(--radius);
  margin: 24px 0;
}
.article-body figure {
  margin: 24px 0;
}
.article-body figcaption {
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
  margin-top: 8px;
}
.article-body blockquote {
  border-left: 2px solid var(--aux);
  background: #F0F2F3;
  padding: 16px 20px;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 24px 0;
  color: var(--text-secondary);
  font-size: 15px;
}
.article-body blockquote p {
  margin: 0;
}
.article-body a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.article-body a:hover {
  color: var(--accent-hover);
}
.article-body ul,
.article-body ol {
  margin: 1.5em 0;
  padding-left: 1.5em;
}
.article-body ul {
  list-style: disc;
}
.article-body ol {
  list-style: decimal;
}
.article-body li {
  margin: 0.5em 0;
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}
.article-body th,
.article-body td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
}
.article-body th {
  background: var(--bg-body);
  font-weight: 600;
}
.article-body .toc {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-body);
  padding: 16px 20px;
  margin: 24px 0;
  font-size: 13px;
}
.article-body .toc-title {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.article-body .toc li {
  margin: 4px 0;
}
.article-body .toc a {
  color: var(--text-secondary);
  text-decoration: none;
}
.article-body .toc a:hover {
  color: var(--accent);
}
.article-empty {
  text-align: center;
  padding: 80px 24px;
}
.article-empty .empty-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 20px;
  color: var(--text-muted);
  opacity: 0.4;
}
.article-empty .empty-icon svg {
  width: 48px;
  height: 48px;
}
.article-empty h1 {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.article-empty p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}
.related-section {
  padding: 64px 0;
  background: var(--bg-white);
  border-top: 1px solid var(--border);
  margin-top: 48px;
}
.related-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 24px;
}
.related-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 24px;
  padding-left: 12px;
  border-left: 2px solid var(--accent);
}
.related-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.related-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), padding var(--transition);
}
.related-item:last-child {
  border-bottom: none;
}
.related-item:hover {
  background: var(--bg-body);
  padding-left: 8px;
  padding-right: 8px;
}
.related-item h4 {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
  transition: color var(--transition);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.related-item:hover h4 {
  color: var(--accent);
}
.related-date {
  font-size: 12px;
  color: var(--text-muted);
  flex-shrink: 0;
}
.related-empty {
  padding: 32px 0;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
}
.cta-section {
  background: var(--bg-dark);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "S";
  position: absolute;
  right: -20px;
  bottom: -60px;
  font-size: 260px;
  font-weight: 700;
  color: rgba(255,255,255,0.04);
  line-height: 1;
  pointer-events: none;
}
.cta-container {
  position: relative;
  text-align: center;
  z-index: 1;
}
.cta-container h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-light);
  margin-bottom: 12px;
  letter-spacing: -0.3px;
}
.cta-container p {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 28px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}
.site-footer {
  background: var(--bg-dark-deep);
  padding: 56px 0 0;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .footer-logo {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: -0.2px;
}
.footer-brand .footer-logo sup {
  font-size: 10px;
  font-weight: 500;
  color: var(--text-muted);
  margin-left: 4px;
}
.footer-brand p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
  max-width: 300px;
}
.footer-lang {
  display: inline-block;
  font-size: 12px;
  color: var(--text-muted);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-sm);
  padding: 3px 8px;
  background: rgba(255,255,255,0.03);
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col ul li a {
  font-size: 13px;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-col ul li a:hover {
  color: var(--accent);
}
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}
.footer-contact li svg {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--text-secondary);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 20px 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
}
.footer-bottom .domain {
  color: var(--text-secondary);
  font-weight: 500;
}
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .hot-trends {
    display: none;
  }
  .nav-links a {
    padding: 0 12px;
  }
}
@media (max-width: 768px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .header-top-inner {
    height: 48px;
  }
  .header-top-right .top-contact,
  .header-top-right .top-divider,
  .header-top-right .top-lang {
    display: none;
  }
  .menu-toggle {
    display: inline-flex;
  }
  .header-nav {
    position: relative;
  }
  .header-nav-inner {
    height: 48px;
  }
  .nav-links {
    display: none;
  }
  .search-btn span {
    display: none;
  }
  .search-btn {
    width: 36px;
    height: 36px;
    padding: 0;
    justify-content: center;
  }
  .article-wrapper {
    padding-top: 24px;
  }
  .article-main {
    padding: 28px 20px;
    border-radius: 0;
    border-left: none;
    border-right: none;
  }
  .article-title {
    font-size: 26px;
  }
  .breadcrumb .current {
    max-width: 220px;
  }
  .container-narrow {
    padding: 0 16px;
  }
  .related-container {
    padding: 0 16px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-bottom: 32px;
  }
  .cta-section {
    padding: 56px 0;
  }
  .cta-container h2 {
    font-size: 22px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
  .search-panel-inner {
    flex-direction: column;
  }
  .article-meta {
    gap: 4px;
  }
  .article-meta .meta-source {
    display: none;
  }
}
@media (max-width: 520px) {
  .article-title {
    font-size: 22px;
  }
  .article-main {
    padding: 20px 16px;
  }
  .related-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
  .related-item h4 {
    white-space: normal;
  }
  .breadcrumb .current {
    max-width: 180px;
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

/* roulang page: category1 */
:root {
  --bg-body: #F6F7F8;
  --bg-white: #FFFFFF;
  --bg-dark: #1A1D21;
  --bg-darker: #14171A;
  --text-primary: #1A1D21;
  --text-secondary: #5A6068;
  --text-muted: #9AA0A8;
  --text-inverse: #FFFFFF;
  --text-inverse-sub: #C8CDD2;
  --primary: #E85D2A;
  --primary-hover: #C94A1D;
  --primary-active: #B03E16;
  --accent: #3D5A6C;
  --border: #E8EAEC;
  --border-dark: #D8DBDE;
  --success: #2A7F5D;
  --warning: #B98A2F;
  --error: #BF4A3C;
  --radius: 4px;
  --radius-sm: 2px;
  --shadow-hover: 0 8px 24px rgba(26,29,33,0.06);
  --shadow-pop: 0 12px 32px rgba(26,29,33,0.1);
  --container: 1200px;
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font-main); font-size: 16px; line-height: 1.75; color: var(--text-primary); background: var(--bg-body); letter-spacing: 0.2px; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, select, textarea { font: inherit; }
sup { font-size: 10px; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
section { scroll-margin-top: 90px; }

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-body); }
::-webkit-scrollbar-thumb { background: #C2C7CD; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #9AA0A8; }

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

.btn-primary {
  display: inline-flex; align-items: center; justify-content: center;
  height: 40px; padding: 0 24px; background: var(--primary); color: #fff;
  border: 1px solid transparent; border-radius: var(--radius); font-size: 14px; font-weight: 500;
  cursor: pointer; transition: background .2s ease, box-shadow .2s ease;
}
.btn-primary:hover { background: var(--primary-hover); box-shadow: 0 4px 12px rgba(232,93,42,0.25); }
.btn-primary:active { background: var(--primary-active); }
.btn-primary:disabled { background: #C9CDD2; box-shadow: none; cursor: not-allowed; }

.btn-outline {
  display: inline-flex; align-items: center; justify-content: center;
  height: 40px; padding: 0 24px; background: transparent; color: var(--text-secondary);
  border: 1px solid var(--accent); border-radius: var(--radius); font-size: 14px; font-weight: 500; cursor: pointer;
  transition: background .2s ease, color .2s ease, box-shadow .2s ease;
}
.btn-outline:hover { background: rgba(61,90,108,0.05); color: var(--text-primary); box-shadow: inset 2px 0 0 var(--primary); }
.btn-outline:active { background: rgba(61,90,108,0.1); }
.btn-large { height: 48px; padding: 0 32px; font-size: 15px; }

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.header-top {
  background: #fff;
  border-bottom: 1px solid var(--border);
  transition: max-height .3s ease, opacity .3s ease;
  max-height: 60px; overflow: hidden;
}
.site-header.scrolled .header-top { max-height: 0; opacity: 0; }
.header-top-inner { display: flex; align-items: center; justify-content: space-between; height: 44px; }
.brand { display: inline-flex; align-items: center; gap: 8px; font-size: 16px; font-weight: 700; color: var(--text-primary); letter-spacing: .2px; }
.brand sup { font-weight: 500; color: var(--text-muted); }
.brand-symbol { width: 22px; height: 22px; color: var(--primary); flex-shrink: 0; }
.header-top-right { display: flex; align-items: center; gap: 16px; }
.header-link { font-size: 13px; color: var(--text-secondary); transition: color .2s ease; }
.header-link:hover { color: var(--primary); }
.lang-badge { font-size: 11px; border: 1px solid var(--border-dark); border-radius: var(--radius-sm); padding: 2px 6px; color: var(--text-secondary); }

.header-nav { border-bottom: 1px solid var(--border); background: rgba(255,255,255,0.92); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); }
.header-nav-inner { display: flex; align-items: center; justify-content: space-between; height: 52px; gap: 20px; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { font-size: 14px; color: var(--text-secondary); font-weight: 500; padding: 14px 0; border-bottom: 2px solid transparent; transition: color .2s ease, border-color .2s ease; white-space: nowrap; }
.nav-links a:hover { color: var(--text-primary); }
.nav-links a.active { color: var(--text-primary); border-bottom-color: var(--primary); }

.nav-tools { display: flex; align-items: center; gap: 16px; }
.search-box { display: flex; height: 36px; width: 220px; border: 1px solid var(--border-dark); border-radius: var(--radius); overflow: hidden; background: #fff; transition: border-color .2s ease; }
.search-box:focus-within { border-color: var(--primary); box-shadow: 0 0 0 1px var(--primary); }
.search-box input { flex: 1; min-width: 0; border: none; outline: none; padding: 0 12px; font-size: 13px; background: transparent; color: var(--text-primary); }
.search-box input::placeholder { color: var(--text-muted); }
.search-box button { width: 40px; border: none; background: var(--bg-dark); color: #fff; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: background .2s ease; flex-shrink: 0; }
.search-box button:hover { background: var(--primary); }
.search-box button svg { width: 15px; height: 15px; }
.trend-links { display: flex; align-items: center; gap: 8px; }
.trend-links a { font-size: 12px; color: var(--text-muted); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 4px 8px; transition: all .2s ease; white-space: nowrap; }
.trend-links a:hover { color: var(--primary); border-color: var(--primary); }

.menu-toggle { display: none; width: 40px; height: 40px; align-items: center; justify-content: center; background: none; border: 1px solid var(--border); border-radius: var(--radius); cursor: pointer; flex-direction: column; gap: 4px; padding: 0; }
.menu-toggle span { display: block; width: 18px; height: 2px; background: var(--text-primary); transition: transform .25s ease, opacity .25s ease; }
.menu-toggle:hover { border-color: var(--primary); }
.menu-toggle:hover span { background: var(--primary); }

/* ===== Mobile drawer ===== */
.drawer-overlay {
  position: fixed; inset: 0; background: rgba(26,29,33,0.4);
  opacity: 0; visibility: hidden; transition: opacity .3s ease; z-index: 1040;
}
.drawer-overlay.show { opacity: 1; visibility: visible; }
.mobile-drawer {
  position: fixed; top: 0; right: -300px; width: 300px; height: 100vh;
  background: #fff; z-index: 1050; transition: right .3s ease;
  display: flex; flex-direction: column; padding: 20px 24px;
  box-shadow: var(--shadow-pop);
}
.mobile-drawer.open { right: 0; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 28px; }
.drawer-brand { font-size: 16px; font-weight: 700; color: var(--text-primary); }
.drawer-close { width: 32px; height: 32px; border: 1px solid var(--border); background: none; border-radius: var(--radius); font-size: 18px; cursor: pointer; color: var(--text-secondary); display: flex; align-items: center; justify-content: center; transition: all .2s ease; }
.drawer-close:hover { color: var(--primary); border-color: var(--primary); }
.drawer-nav { display: flex; flex-direction: column; gap: 4px; margin-bottom: 24px; }
.drawer-nav a { padding: 12px 0; font-size: 15px; font-weight: 500; color: var(--text-primary); border-bottom: 1px solid var(--border); transition: color .2s ease, padding-left .2s ease; }
.drawer-nav a:hover { color: var(--primary); padding-left: 8px; }
.drawer-trend { margin-bottom: 24px; }
.drawer-trend span { display: block; font-size: 13px; color: var(--text-muted); font-weight: 600; letter-spacing: .5px; margin-bottom: 10px; }
.drawer-trend a { display: inline-block; font-size: 13px; color: var(--text-secondary); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 5px 10px; margin: 0 8px 8px 0; transition: all .2s ease; }
.drawer-trend a:hover { color: var(--primary); border-color: var(--primary); }
.drawer-contact { margin-top: auto; display: block; text-align: center; padding: 12px 0; font-size: 14px; font-weight: 500; color: #fff; background: var(--bg-dark); border-radius: var(--radius); transition: background .2s ease; }
.drawer-contact:hover { background: var(--primary); }

/* ===== Page Hero (H1 区) ===== */
.page-hero { background: var(--bg-body); border-bottom: 1px solid var(--border); padding: 60px 0 52px; }
.page-hero-inner { display: flex; align-items: center; gap: 56px; }
.page-hero-content { flex: 1; min-width: 0; }
.page-hero-tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; font-weight: 500; letter-spacing: .5px; color: var(--primary);
  border: 1px solid rgba(232,93,42,0.3); border-radius: var(--radius-sm);
  padding: 4px 10px; margin-bottom: 20px;
}
.page-hero h1 {
  font-size: 34px; font-weight: 700; line-height: 1.25; letter-spacing: -0.5px;
  color: var(--text-primary); margin-bottom: 16px; padding-top: 20px; position: relative;
}
.page-hero h1::before { content: ''; position: absolute; top: 0; left: 0; width: 40px; height: 2px; background: var(--primary); }
.page-hero-content p { font-size: 15px; line-height: 1.75; color: var(--text-secondary); margin-bottom: 28px; max-width: 600px; }
.page-hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.page-hero-visual { flex: 0 0 440px; position: relative; }
.page-hero-visual img { width: 100%; height: 260px; object-fit: cover; border-radius: var(--radius); border: 1px solid var(--border); box-shadow: var(--shadow-pop); }
.hero-visual-caption {
  position: absolute; bottom: 14px; left: 14px; background: rgba(26,29,33,0.82);
  color: #fff; border-radius: var(--radius-sm); padding: 10px 16px; max-width: 300px;
}
.hero-visual-caption span { display: block; font-size: 11px; letter-spacing: .5px; color: var(--text-inverse-sub); margin-bottom: 2px; }
.hero-visual-caption strong { font-size: 13px; font-weight: 600; line-height: 1.5; }

/* ===== Category body layout ===== */
.category-body { padding: 48px 0 64px; }
.category-layout { display: flex; gap: 32px; align-items: flex-start; }
.category-main { flex: 1; min-width: 0; }

/* Product entry list */
.product-entry-list { display: flex; flex-direction: column; gap: 20px; }
.product-entry {
  display: flex; background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: box-shadow .3s ease, transform .3s ease;
}
.product-entry:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.product-entry.featured { border-top: 2px solid var(--primary); }
.product-entry-thumb { flex: 0 0 200px; min-height: 130px; overflow: hidden; background: #F0F2F3; }
.product-entry-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s ease; }
.product-entry:hover .product-entry-thumb img { transform: scale(1.03); }
.product-entry.featured .product-entry-thumb { flex-basis: 280px; }
.product-entry-content { flex: 1; min-width: 0; padding: 24px 28px; display: flex; flex-direction: column; }
.entry-tag { align-self: flex-start; }
.product-entry-content h3 { font-size: 18px; font-weight: 600; line-height: 1.4; margin: 12px 0 8px; transition: color .2s ease; }
.product-entry:hover .product-entry-content h3 { color: var(--primary); }
.product-entry-content p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.entry-meta { display: flex; gap: 8px; flex-wrap: wrap; margin: 14px 0 16px; }
.entry-meta li { font-size: 12px; color: var(--text-muted); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 2px 8px; }
.entry-link { margin-top: auto; font-size: 14px; color: var(--primary); font-weight: 500; display: inline-flex; align-items: center; gap: 4px; transition: gap .2s ease; }
.entry-link:hover { text-decoration: underline; gap: 7px; }

/* Tech stats */
.tech-stats { background: var(--bg-dark); border-radius: var(--radius); padding: 40px 36px; margin: 40px 0; color: #fff; position: relative; overflow: hidden; }
.tech-stats::after { content: 'S'; position: absolute; font-size: 220px; font-weight: 800; color: rgba(255,255,255,0.03); top: -40px; right: -20px; pointer-events: none; line-height: 1; }
.tech-stats-head { margin-bottom: 32px; position: relative; }
.tech-stats-head .section-kicker { color: #E8926A; }
.tech-stats h2 { font-size: 26px; font-weight: 700; color: #fff; line-height: 1.3; letter-spacing: -0.3px; margin: 8px 0 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.stat-item { border-top: 2px solid var(--primary); padding-top: 16px; position: relative; }
.stat-item strong { display: block; font-size: 30px; font-weight: 700; color: var(--primary); font-feature-settings: 'tnum'; line-height: 1.2; }
.stat-item span { display: block; font-size: 13px; color: var(--text-inverse-sub); margin-top: 6px; }

/* Tech flow */
.tech-flow { margin: 0 0 8px; padding: 4px 2px; }
.section-kicker { display: inline-block; font-size: 12px; font-weight: 500; letter-spacing: .5px; color: var(--primary); text-transform: uppercase; margin-bottom: 8px; position: relative; padding-left: 14px; }
.section-kicker::before { content: ''; position: absolute; left: 0; top: 2px; width: 2px; height: 14px; background: var(--primary); }
.tech-flow h2 { font-size: 26px; font-weight: 700; line-height: 1.3; letter-spacing: -0.3px; margin: 8px 0 28px; }
.flow-list { border-left: 1px solid var(--border); margin-left: 10px; padding-left: 28px; }
.flow-item { position: relative; padding-bottom: 30px; }
.flow-item:last-child { padding-bottom: 0; }
.flow-item::before {
  content: ''; position: absolute; left: -33px; top: 6px; width: 9px; height: 9px;
  border-radius: 50%; background: var(--primary); border: 2px solid #fff; box-shadow: 0 0 0 1px var(--primary);
}
.flow-item em { font-style: normal; font-size: 13px; font-weight: 600; color: var(--primary); letter-spacing: 1px; }
.flow-item h3 { font-size: 17px; font-weight: 600; margin: 6px 0 4px; }
.flow-item p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* FAQ */
.faq-section { margin-top: 48px; }
.faq-section h2 { font-size: 26px; font-weight: 700; line-height: 1.3; letter-spacing: -0.3px; margin: 8px 0 24px; }
.faq-list { border-top: 1px solid var(--border); }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item summary {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  cursor: pointer; padding: 18px 4px; font-size: 15px; font-weight: 500; line-height: 1.5;
  list-style: none; transition: color .2s ease, padding-left .2s ease;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--primary); }
.faq-item summary::after {
  content: '+'; font-size: 22px; color: var(--primary); transition: transform .25s ease; line-height: 1; flex-shrink: 0;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item[open] summary { border-left: 2px solid var(--primary); padding-left: 14px; }
.faq-item[open] summary:hover { color: var(--text-primary); }
.faq-item p { padding: 0 0 18px 16px; font-size: 14px; line-height: 1.65; color: var(--text-secondary); max-width: 640px; }

/* Sidebar */
.category-sidebar { width: 320px; flex-shrink: 0; display: flex; flex-direction: column; gap: 20px; }
.sidebar-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.sidebar-card h3 { font-size: 16px; font-weight: 600; margin-bottom: 16px; position: relative; padding-bottom: 12px; }
.sidebar-card h3::after { content: ''; position: absolute; left: 0; bottom: 0; width: 32px; height: 2px; background: var(--primary); }
.hot-list { counter-reset: hot; }
.hot-list li { display: flex; align-items: center; gap: 12px; padding: 11px 0; border-bottom: 1px solid #F0F2F3; }
.hot-list li:last-child { border-bottom: none; padding-bottom: 0; }
.hot-list li:first-child { padding-top: 4px; }
.hot-list li::before {
  counter-increment: hot; content: counter(hot);
  font-size: 16px; font-weight: 700; color: var(--primary); font-feature-settings: 'tnum'; flex-shrink: 0; width: 18px;
}
.hot-list a { font-size: 14px; font-weight: 500; color: var(--text-primary); transition: color .2s ease; }
.hot-list a:hover { color: var(--primary); }
.hot-list li span { margin-left: auto; font-size: 12px; color: var(--text-muted); flex-shrink: 0; }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-cloud a {
  height: 28px; padding: 0 14px; display: inline-flex; align-items: center;
  background: #EEF0F2; color: var(--text-secondary); font-size: 13px; border-radius: var(--radius-sm);
  border: 1px solid transparent; transition: all .2s ease;
}
.tag-cloud a:hover { border-color: var(--primary); color: var(--primary); background: #FFF6F2; }
.sidebar-cta {
  background: var(--bg-dark); border-radius: var(--radius); padding: 28px 24px; color: #fff;
  text-align: center; position: relative; overflow: hidden;
}
.sidebar-cta::before { content: 'S'; position: absolute; font-size: 130px; font-weight: 800; color: rgba(255,255,255,0.04); top: -30px; right: -10px; line-height: 1; pointer-events: none; }
.sidebar-cta h3 { font-size: 17px; font-weight: 600; margin-bottom: 10px; position: relative; }
.sidebar-cta p { font-size: 13px; color: var(--text-inverse-sub); line-height: 1.6; margin-bottom: 18px; position: relative; }
.sidebar-cta .btn-primary { width: 100%; position: relative; }

/* CTA */
.cta-section {
  background: var(--bg-dark); padding: 72px 0; text-align: center;
  position: relative; overflow: hidden; border-top: 1px solid rgba(255,255,255,0.06);
}
.cta-section::before { content: 'S'; position: absolute; font-size: 320px; font-weight: 800; color: rgba(255,255,255,0.03); top: 50%; left: 50%; transform: translate(-50%, -50%); pointer-events: none; line-height: 1; }
.cta-section h2 { color: #fff; font-size: 28px; font-weight: 700; margin-bottom: 12px; position: relative; letter-spacing: -0.3px; }
.cta-section p { color: var(--text-inverse-sub); font-size: 15px; margin-bottom: 30px; position: relative; }

/* Footer */
.site-footer { background: var(--bg-darker); color: var(--text-inverse-sub); padding: 56px 0 0; font-size: 13px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.footer-logo { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.footer-logo sup { font-size: 10px; font-weight: 500; color: var(--text-muted); margin-left: 4px; }
.footer-brand p { font-size: 13px; line-height: 1.7; color: var(--text-inverse-sub); max-width: 280px; margin-bottom: 16px; }
.footer-lang { display: inline-block; font-size: 11px; border: 1px solid rgba(255,255,255,0.2); border-radius: var(--radius-sm); padding: 3px 8px; color: var(--text-inverse-sub); }
.footer-col h4 { font-size: 14px; font-weight: 600; color: #fff; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col a { color: var(--text-inverse-sub); transition: color .2s ease; }
.footer-col a:hover { color: var(--primary); }
.footer-contact li { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 12px; color: var(--text-inverse-sub); line-height: 1.5; }
.footer-contact svg { width: 16px; height: 16px; flex-shrink: 0; margin-top: 2px; color: var(--text-muted); }
.footer-bottom {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 20px 0; font-size: 12px; color: var(--text-muted); flex-wrap: wrap;
}
.footer-bottom .domain { color: var(--text-muted); letter-spacing: .5px; }

/* Animations */
.js .fade-up { opacity: 0; transform: translateY(12px); transition: opacity .4s ease-out, transform .4s ease-out; }
.js .fade-up.visible { opacity: 1; transform: translateY(0); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .page-hero { padding: 44px 0 40px; }
  .page-hero-inner { gap: 32px; }
  .page-hero-visual { flex-basis: 360px; }
  .page-hero-visual img { height: 220px; }
  .category-layout { flex-direction: column; }
  .category-sidebar { width: 100%; flex-direction: row; flex-wrap: wrap; gap: 16px; }
  .sidebar-card { flex: 1 1 240px; }
  .sidebar-cta { flex: 1 1 240px; }
  .nav-tools { gap: 10px; }
  .search-box { width: 180px; }
  .trend-links a:last-child { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .container { padding: 0 16px; }
  .header-top-inner { height: 52px; }
  .header-top-right .header-link { display: none; }
  .nav-links, .nav-tools { display: none; }
  .menu-toggle { display: flex; }
  .page-hero { padding: 36px 0 32px; }
  .page-hero-inner { flex-direction: column; gap: 24px; }
  .page-hero-visual { flex-basis: auto; width: 100%; }
  .page-hero-visual img { height: 200px; width: 100%; }
  .page-hero h1 { font-size: 27px; }
  .page-hero-content p { font-size: 14px; }
  .category-body { padding: 32px 0 48px; }
  .product-entry { flex-direction: column; }
  .product-entry-thumb { flex-basis: auto; height: 180px; }
  .product-entry.featured .product-entry-thumb { flex-basis: auto; }
  .product-entry-content { padding: 20px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .tech-stats { padding: 32px 24px; }
  .tech-stats h2 { font-size: 22px; }
  .flow-item { padding-bottom: 24px; }
  .flow-item p { font-size: 13px; }
  .faq-section h2 { font-size: 22px; }
  .cta-section { padding: 56px 0; }
  .cta-section h2 { font-size: 22px; }
  .cta-section p { font-size: 14px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; justify-content: center; text-align: center; }
}

@media (max-width: 520px) {
  .page-hero h1 { font-size: 25px; }
  .page-hero-actions .btn-primary, .page-hero-actions .btn-outline { width: 100%; }
  .stats-grid { grid-template-columns: 1fr; }
  .product-entry-thumb { height: 170px; }
  .entry-meta li { font-size: 11px; }
  .sidebar-card { flex-basis: 100%; }
  .sidebar-cta { flex-basis: 100%; }
  .footer-bottom span { font-size: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}

/* roulang page: category2 */
:root{
  --bg:#F6F7F8;
  --bg-white:#FFFFFF;
  --text:#1A1D21;
  --text-secondary:#5A6068;
  --text-muted:#9AA0A8;
  --primary:#E85D2A;
  --primary-hover:#C94A1D;
  --primary-active:#B03E16;
  --accent:#3D5A6C;
  --border:#E8EAEC;
  --border-strong:#D8DBDE;
  --success:#2A7F5D;
  --dark:#1A1D21;
  --dark-secondary:#2A2E33;
  --dark-footer:#14171A;
  --radius:4px;
  --radius-sm:2px;
  --shadow-sm:0 2px 8px rgba(26,29,33,0.04);
  --shadow-md:0 8px 24px rgba(26,29,33,0.06);
  --shadow-lg:0 12px 32px rgba(26,29,33,0.1);
  --container:1200px;
  --space-section:88px;
  --space-section-sm:48px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
  font-size:15px;line-height:1.75;letter-spacing:0.2px;color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
input{font-family:inherit}
ul,ol{list-style:none}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.section-tag{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:1px;color:var(--primary);
  padding:0 12px;height:22px;line-height:22px;background:rgba(232,93,42,0.08);
  border-radius:2px;margin-bottom:14px;
}
.section-heading h2{
  font-size:30px;font-weight:700;line-height:1.3;letter-spacing:-0.3px;margin-bottom:16px;
  position:relative;padding-left:16px;
}
.section-heading h2::before{
  content:'';position:absolute;left:0;top:6px;bottom:6px;width:2px;background:var(--primary);
}
.section-heading .section-desc{
  font-size:14px;color:var(--text-secondary);max-width:640px;line-height:1.7;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;height:40px;padding:0 24px;
  border-radius:4px;font-size:14px;font-weight:600;letter-spacing:0.3px;border:1px solid transparent;
  transition:background-color .2s,border-color .2s,color .2s,box-shadow .2s,transform .2s;
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-hover);box-shadow:0 4px 12px rgba(232,93,42,0.25)}
.btn-primary:active{background:var(--primary-active);transform:translateY(1px)}
.btn-outline{background:transparent;border-color:var(--accent);color:var(--text)}
.btn-outline:hover{background:rgba(61,90,108,0.05);border-left:2px solid var(--primary)}
.btn-outline:active{transform:translateY(1px)}
.btn-lg{height:48px;padding:0 36px;font-size:15px}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,0.6);color:#fff}
.btn-ghost-light:hover{background:#fff;color:#1A1D21}

::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:#F6F7F8}
::-webkit-scrollbar-thumb{background:#C2C7CD;border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:#9AA0A8}

/* ======= Header ======= */
.site-header{
  position:relative;background:#fff;z-index:150;
}
.header-top{border-bottom:1px solid var(--border);height:44px}
.header-top-inner{height:44px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center}
.brand-logo{display:flex;align-items:center;gap:8px}
.brand-mark{
  width:26px;height:26px;display:flex;align-items:center;justify-content:center;
  color:var(--primary);border:1px solid var(--border);border-radius:4px;
}
.brand-name{font-size:16px;font-weight:700;letter-spacing:0.2px;color:var(--text)}
.header-top-right{display:flex;align-items:center;gap:16px}
.contact-link{font-size:13px;color:var(--text-secondary);transition:color .2s}
.contact-link:hover{color:var(--primary)}
.lang-badge{
  display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;
  border:1px solid var(--border-strong);border-radius:2px;font-size:12px;color:var(--text-secondary);
}
.header-nav{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,0.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}
.header-nav-inner{height:52px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.nav-links{display:flex;align-items:center;gap:28px;height:100%}
.nav-links a{
  position:relative;display:flex;align-items:center;height:100%;
  font-size:14px;font-weight:500;color:var(--text-secondary);
  transition:color .2s;white-space:nowrap;
}
.nav-links a::after{
  content:'';position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--primary);
  transform:scaleX(0);transition:transform .2s;border-radius:2px 2px 0 0;
}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--text);font-weight:600}
.nav-links a.active::after{transform:scaleX(1)}
.nav-tools{display:flex;align-items:center;gap:20px;flex-shrink:0}
.search-area{position:relative;display:flex;align-items:center}
.search-toggle{
  display:flex;align-items:center;gap:8px;background:none;border:none;
  font-size:13px;color:var(--text-muted);padding:6px 10px;border-radius:4px;
  transition:background-color .2s,color .2s;
}
.search-toggle:hover{background:var(--bg);color:var(--text)}
.search-form{
  position:absolute;top:calc(100% + 8px);right:0;z-index:50;
  display:flex;align-items:center;background:#fff;border:1px solid var(--border-strong);
  border-radius:4px;box-shadow:var(--shadow-lg);overflow:hidden;width:300px;
}
.search-form input{
  flex:1;height:40px;border:none;outline:none;padding:0 14px;font-size:14px;color:var(--text);
  background:transparent;
}
.search-form input:focus{border:2px solid var(--primary)}
.search-form button{
  height:40px;padding:0 18px;background:var(--primary);border:none;color:#fff;font-size:13px;font-weight:600;
  transition:background-color .2s;
}
.search-form button:hover{background:var(--primary-hover)}
.trend-area{display:flex;align-items:center;gap:10px}
.trend-label{display:flex;align-items:center;gap:5px;font-size:12px;color:var(--text-muted);transition:color .2s}
.trend-label:hover{color:var(--text)}
.trend-word{
  font-size:12px;color:var(--text-secondary);background:#F0F2F3;border-radius:2px;
  padding:2px 10px;transition:background-color .2s,color .2s;
}
.trend-word:hover{background:rgba(232,93,42,0.1);color:var(--primary)}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:4px;
  width:38px;height:38px;background:none;border:none;align-items:center;border-radius:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:all .2s}

/* mobile drawer */
.mobile-drawer{
  position:fixed;inset:0;background:#fff;z-index:300;padding:24px 28px;
  transform:translateX(100%);transition:transform .35s ease;overflow-y:auto;
  box-shadow:var(--shadow-lg);
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px}
.drawer-header .brand-name{font-size:18px;font-weight:700}
.drawer-close{
  width:36px;height:36px;border:1px solid var(--border);background:none;border-radius:4px;
  font-size:20px;color:var(--text);display:flex;align-items:center;justify-content:center;transition:background-color .2s;
}
.drawer-close:hover{background:var(--bg)}
.drawer-nav{display:flex;flex-direction:column;border-top:1px solid var(--border)}
.drawer-nav a{
  padding:16px 0;font-size:16px;font-weight:500;color:var(--text);border-bottom:1px solid var(--border);
  transition:color .2s;position:relative;
}
.drawer-nav a.active{color:var(--primary)}
.drawer-nav a:hover{color:var(--primary)}
.drawer-trend{margin-top:28px}
.drawer-trend span{display:block;font-size:12px;color:var(--text-muted);margin-bottom:12px;letter-spacing:1px}
.drawer-trend .trend-words{display:flex;gap:10px;flex-wrap:wrap}
.drawer-trend .trend-words a{
  font-size:13px;color:var(--text-secondary);background:#F0F2F3;padding:4px 14px;border-radius:2px;transition:background-color .2s,color .2s;
}
.drawer-trend .trend-words a:hover{background:rgba(232,93,42,0.1);color:var(--primary)}
.drawer-contact{
  display:block;margin-top:32px;text-align:center;height:44px;line-height:44px;
  background:var(--primary);color:#fff;border-radius:4px;font-size:14px;font-weight:600;
  transition:background-color .2s;
}
.drawer-contact:hover{background:var(--primary-hover)}
.drawer-overlay{
  position:fixed;inset:0;background:rgba(26,29,33,0.4);z-index:250;
  opacity:0;pointer-events:none;transition:opacity .3s;
}
.drawer-overlay.open{opacity:1;pointer-events:auto}

/* ======= Category Hero ======= */
.category-hero{background:var(--bg);border-bottom:1px solid var(--border);padding:72px 0 80px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-muted);margin-bottom:24px}
.breadcrumb a{color:var(--text-muted);transition:color .2s}
.breadcrumb a:hover{color:var(--primary)}
.category-hero .eyebrow{
  display:block;font-size:12px;font-weight:600;letter-spacing:2px;color:var(--primary);
  text-transform:uppercase;margin-bottom:12px;
}
.category-hero h1{
  font-size:36px;font-weight:700;line-height:1.25;letter-spacing:-0.5px;color:var(--text);
  margin-bottom:16px;max-width:760px;
}
.category-hero .category-desc{
  font-size:16px;line-height:1.75;color:var(--text-secondary);max-width:720px;margin-bottom:28px;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-metrics{
  display:flex;gap:56px;margin-top:48px;padding-top:32px;border-top:1px solid var(--border);
}
.metric-item{position:relative;padding-top:8px}
.metric-item::before{
  content:'';position:absolute;top:0;left:0;width:24px;height:2px;background:var(--primary);
}
.metric-value{font-size:32px;font-weight:700;color:var(--primary);font-feature-settings:'tnum';line-height:1.2}
.metric-value .unit{font-size:16px;font-weight:600;margin-left:2px}
.metric-label{font-size:13px;color:var(--text-muted);margin-top:4px}

/* ======= Capabilities ======= */
.section-capabilities{background:#fff;padding:96px 0}
.capabilities-grid{display:grid;grid-template-columns:4fr 8fr;gap:64px}
.cap-left{padding-right:40px}
.cap-left h2{font-size:30px;font-weight:700;line-height:1.3;margin-bottom:16px}
.cap-left > p{font-size:15px;color:var(--text-secondary);line-height:1.75}
.cap-list{margin-top:8px}
.cap-item{
  display:grid;grid-template-columns:48px 1fr;gap:16px;padding:20px 8px;
  border-top:1px solid var(--border);transition:background-color .2s,transform .2s;
}
.cap-item:first-child{border-top:none}
.cap-item:hover{background:var(--bg);border-radius:4px;transform:translateY(-2px)}
.cap-icon{
  width:40px;height:40px;border:1px solid var(--border);border-radius:4px;
  display:flex;align-items:center;justify-content:center;color:var(--accent);
  background:#fff;
}
.cap-item h3{font-size:16px;font-weight:600;margin-bottom:6px}
.cap-item p{font-size:14px;color:var(--text-secondary);line-height:1.6;margin:0}

/* ======= Solutions ======= */
.section-solutions{background:var(--bg);padding:96px 0}
.sections-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px}
.sections-head h2{font-size:30px;font-weight:700;margin-bottom:0;position:relative;padding-left:16px}
.sections-head h2::before{content:'';position:absolute;left:0;top:6px;bottom:6px;width:2px;background:var(--primary)}
.solution-layout{display:grid;grid-template-columns:5fr 4fr;gap:24px}
.solution-right{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.solution-card{
  background:#fff;border:1px solid var(--border);border-radius:4px;padding:32px;
  display:flex;flex-direction:column;transition:box-shadow .2s,transform .2s;
}
.solution-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.solution-card-sm{padding:24px}
.solution-img{border-radius:4px;overflow:hidden;margin-bottom:20px;aspect-ratio:16/8}
.solution-card-lg .solution-img{aspect-ratio:16/7}
.solution-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.solution-card:hover .solution-img img{transform:scale(1.03)}
.solution-card h3{font-size:20px;font-weight:600;margin-bottom:10px;line-height:1.4}
.solution-card-sm h3{font-size:17px}
.solution-card p{font-size:14px;color:var(--text-secondary);line-height:1.7;margin-bottom:20px;flex:1}
.solution-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}
.solution-tags span{
  height:22px;line-height:22px;padding:0 10px;font-size:12px;background:#F0F2F3;
  color:var(--text-secondary);border-radius:2px;
}
.solution-link{font-size:14px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:4px;transition:gap .2s}
.solution-link:hover{gap:8px}
.solution-link svg{transition:transform .2s}
.solution-link:hover svg{transform:translateX(2px)}

/* ======= Scenarios ======= */
.section-scenarios{background:#fff;padding:96px 0}
.scenario-wide{
  display:grid;grid-template-columns:7fr 5fr;gap:24px;margin-bottom:24px;
}
.scenario-img{border-radius:4px;overflow:hidden;background:var(--bg)}
.scenario-img img{width:100%;height:100%;min-height:340px;object-fit:cover}
.scenario-info{
  background:var(--dark);border-radius:4px;padding:40px;
  display:flex;flex-direction:column;justify-content:center;position:relative;overflow:hidden;
}
.scenario-info::after{
  content:'S';position:absolute;right:-20px;bottom:-30px;font-size:120px;font-weight:700;
  color:rgba(255,255,255,0.05);pointer-events:none;line-height:1;
}
.scenario-info .scenario-label{
  display:inline-block;width:fit-content;font-size:11px;font-weight:600;letter-spacing:1px;
  color:var(--primary);border:1px solid rgba(232,93,42,0.4);border-radius:2px;padding:2px 10px;margin-bottom:16px;
}
.scenario-info h3{font-size:22px;font-weight:600;color:#fff;margin-bottom:12px;line-height:1.4}
.scenario-info p{font-size:15px;line-height:1.75;color:#C8CDD2;margin:0}
.scenario-row{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.scenario-card{
  border:1px solid var(--border);border-radius:4px;overflow:hidden;background:#fff;
  display:flex;transition:box-shadow .2s,transform .2s;
}
.scenario-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.scenario-card-img{width:40%;overflow:hidden;flex-shrink:0}
.scenario-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.scenario-card:hover .scenario-card-img img{transform:scale(1.03)}
.scenario-card-body{padding:20px 24px}
.scenario-card-body h3{font-size:16px;font-weight:600;margin-bottom:6px}
.scenario-card-body p{font-size:13px;color:var(--text-secondary);line-height:1.6;margin:0}

/* ======= Process ======= */
.section-process{background:var(--bg);padding:96px 0}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:8px}
.process-step{
  background:#fff;border:1px solid var(--border);border-radius:4px;padding:28px;
  position:relative;transition:box-shadow .2s,transform .2s;
}
.process-step:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.step-num{display:block;font-size:13px;font-weight:700;color:var(--primary);letter-spacing:1px;margin-bottom:12px}
.process-step h3{font-size:17px;font-weight:600;margin-bottom:8px}
.process-step p{font-size:14px;color:var(--text-secondary);line-height:1.7;margin:0}
.process-arrow{
  position:absolute;right:12px;top:16px;color:var(--border-strong);
}

/* ======= FAQ ======= */
.section-faq{background:#fff;padding:96px 0}
.faq-container{max-width:800px;margin:0 auto}
.faq-list{margin-top:36px;border-top:1px solid var(--border)}
.faq-item{border-bottom:1px solid var(--border)}
.faq-question{
  width:100%;display:flex;justify-content:space-between;align-items:center;gap:16px;
  padding:22px 0;background:none;border:none;text-align:left;cursor:pointer;
  font-size:15px;font-weight:600;color:var(--text);transition:color .2s;position:relative;padding-left:16px;
}
.faq-question::before{
  content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:0;background:var(--primary);transition:height .2s;
}
.faq-item.active .faq-question::before{height:20px}
.faq-question:hover{color:var(--primary)}
.faq-icon{width:16px;height:16px;position:relative;flex-shrink:0}
.faq-icon::before,.faq-icon::after{
  content:'';position:absolute;background:var(--text-secondary);transition:transform .2s,background-color .2s;
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item.active .faq-icon::after{transform:rotate(90deg)}
.faq-item.active .faq-icon::before,.faq-item.active .faq-icon::after{background:var(--primary)}
.faq-answer{padding:0 0 24px 16px}
.faq-answer p{font-size:14px;line-height:1.75;color:var(--text-secondary);margin:0}

/* ======= CTA ======= */
.section-cta{
  background:var(--dark);color:#fff;text-align:center;padding:88px 0;position:relative;overflow:hidden;
}
.section-cta::before{
  content:'S';position:absolute;right:-40px;bottom:-80px;font-size:320px;font-weight:700;
  color:rgba(255,255,255,0.04);pointer-events:none;line-height:1;
}
.section-cta h2{font-size:30px;font-weight:700;margin-bottom:12px;position:relative;z-index:1}
.section-cta p{font-size:15px;color:#C8CDD2;margin-bottom:32px;position:relative;z-index:1}
.section-cta .btn{position:relative;z-index:1}

/* ======= Footer ======= */
.site-footer{background:var(--dark-footer);color:#9AA0A8;padding:64px 0 0;font-size:13px}
.footer-grid{
  display:grid;grid-template-columns:3fr 2fr 2fr 3fr;gap:40px;padding-bottom:48px;
  border-bottom:1px solid rgba(255,255,255,0.08);
}
.footer-brand .footer-logo{font-size:18px;font-weight:700;color:#fff;margin-bottom:12px;display:flex;align-items:center;gap:6px}
.footer-brand .footer-logo sup{font-size:11px;color:var(--primary);font-weight:600}
.footer-brand p{font-size:13px;line-height:1.75;color:#9AA0A8;margin-bottom:16px;max-width:280px}
.footer-lang{
  display:inline-block;font-size:12px;color:var(--text-muted);border:1px solid rgba(255,255,255,0.15);
  border-radius:2px;padding:2px 10px;
}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{color:#9AA0A8;transition:color .2s}
.footer-col ul li a:hover{color:var(--primary)}
.footer-contact li{display:flex;align-items:center;gap:10px;margin-bottom:12px;color:#9AA0A8}
.footer-contact svg{width:16px;height:16px;color:var(--text-muted);flex-shrink:0}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;
  padding:20px 0 24px;color:var(--text-muted);font-size:12px;
} 
.footer-bottom .domain{color:var(--text-muted);letter-spacing:0.5px}

/* ======= Animations ======= */
.fade-up{opacity:0;transform:translateY(12px);transition:opacity .4s ease-out,transform .4s ease-out}
.fade-up.in-view{opacity:1;transform:translateY(0)}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .fade-up{opacity:1;transform:none}
}

/* ======= Responsive ======= */
@media (max-width:1200px){
  .trend-word{display:none}
}
@media (max-width:1024px){
  .nav-links{gap:20px}
  .nav-links a{font-size:13px}
  .search-text{display:none}
  .search-toggle{padding:6px}
  .capabilities-grid{grid-template-columns:1fr;gap:40px}
  .cap-left{padding-right:0}
  .solution-layout{grid-template-columns:1fr}
  .solution-right{grid-template-rows:none;grid-template-columns:1fr 1fr}
  .process-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .nav-links{display:none}
  .nav-tools{display:none}
  .nav-toggle{display:flex}
  .header-nav-inner{justify-content:flex-end}
  .header-nav-inner .nav-links{display:none}
  .category-hero{padding:48px 0 56px}
  .category-hero h1{font-size:28px}
  .hero-metrics{gap:32px;flex-wrap:wrap}
  .metric-item{width:calc(50% - 16px)}
  .section-capabilities,.section-solutions,.section-scenarios,.section-process,.section-faq{padding:56px 0}
  .solution-right{grid-template-columns:1fr}
  .scenario-wide{grid-template-columns:1fr}
  .scenario-img img{min-height:220px}
  .scenario-row{grid-template-columns:1fr;gap:16px}
  .scenario-card{flex-direction:column}
  .scenario-card-img{width:100%;aspect-ratio:16/9}
  .process-grid{grid-template-columns:1fr}
  .section-cta{padding:64px 0}
  .section-cta h2{font-size:24px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .container{padding:0 16px}
}
@media (max-width:520px){
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .category-hero h1{font-size:26px}
  .sections-head h2,.section-heading h2{font-size:24px}
  .solution-card-lg{padding:24px}
}

/* roulang page: category3 */
:root {
  --bg-page: #F6F7F8;
  --bg-white: #FFFFFF;
  --ink: #1A1D21;
  --ink-gray: #5A6068;
  --ink-weak: #9AA0A8;
  --brand: #E85D2A;
  --brand-dark: #C94A1D;
  --brand-darker: #B03E16;
  --accent: #3D5A6C;
  --line: #E8EAEC;
  --dark-bg: #1A1D21;
  --dark-bg-2: #14171A;
  --radius: 4px;
  --radius-sm: 2px;
  --shadow-card: 0 8px 24px rgba(26,29,33,0.06);
  --shadow-float: 0 12px 32px rgba(26,29,33,0.10);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { font-family: var(--font-sans); background: var(--bg-page); color: var(--ink); font-size: 15px; line-height: 1.75; font-feature-settings: "tnum"; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
input, button, textarea, select { font: inherit; }
button { border: none; background: none; cursor: pointer; }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #F6F7F8; }
::-webkit-scrollbar-thumb { background: #C2C7CD; border-radius: 4px; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-head { max-width: 720px; margin-bottom: 44px; }
.section-line { display: inline-block; width: 40px; height: 2px; background: var(--brand); margin-bottom: 16px; }
.section-kicker { font-size: 13px; font-weight: 500; color: var(--accent); letter-spacing: 0.5px; margin-bottom: 10px; }
.section-head h2 { font-size: 28px; line-height: 1.3; font-weight: 700; margin-bottom: 12px; }
.section-desc { font-size: 15px; color: var(--ink-gray); line-height: 1.75; }

/* ===== Header ===== */
.site-header { position: relative; z-index: 100; background: var(--bg-white); }
.header-top { height: 44px; border-bottom: 1px solid var(--line); display: flex; align-items: center; }
.header-top-inner { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 8px; }
.brand-mark { display: inline-flex; align-items: center; justify-content: center; width: 24px; height: 24px; color: var(--brand); }
.brand-name { font-size: 16px; font-weight: 700; color: var(--ink); letter-spacing: 0.2px; }
.brand-en { font-size: 12px; font-weight: 600; color: var(--ink-weak); margin-left: 2px; padding-top: 4px; }
.header-top-right { display: flex; align-items: center; gap: 16px; }
.lang-badge { display: inline-flex; align-items: center; justify-content: center; width: 22px; height: 22px; background: #EEF0F2; border: 1px solid var(--line); border-radius: 2px; font-size: 12px; font-weight: 500; color: var(--ink-gray); }
.top-contact { font-size: 13px; font-weight: 500; color: var(--ink-gray); transition: color 0.2s; }
.top-contact:hover { color: var(--brand); }
.header-nav { position: sticky; top: 0; z-index: 90; background: rgba(255,255,255,0.92); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); height: 52px; }
.header-nav-inner { max-width: 1200px; margin: 0 auto; padding: 0 24px; height: 52px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.nav-links { display: flex; align-items: stretch; height: 52px; }
.nav-links a { position: relative; display: inline-flex; align-items: center; padding: 0 16px; font-size: 14px; font-weight: 500; color: var(--ink); transition: color 0.2s; white-space: nowrap; }
.nav-links a:hover { color: var(--brand); }
.nav-links a.active { color: var(--brand); }
.nav-links a.active::after { content: ""; position: absolute; left: 16px; right: 16px; bottom: 0; height: 2px; background: var(--brand); }
.nav-tools { display: flex; align-items: center; gap: 16px; }
.search-box { display: flex; align-items: center; height: 36px; border: 1px solid #D8DBDE; border-radius: 4px; overflow: hidden; background: var(--bg-white); transition: border-color 0.2s; }
.search-box:focus-within { border-color: var(--brand); outline: 2px solid rgba(232,93,42,0.15); outline-offset: 0; }
.search-box svg { width: 16px; height: 16px; color: var(--ink-weak); margin-left: 10px; flex: none; }
.search-box input { border: none; outline: none; background: transparent; height: 34px; padding: 0 8px; width: 144px; font-size: 13px; color: var(--ink); }
.trend-links { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--ink-weak); white-space: nowrap; }
.trend-links span { margin-left: 4px; color: var(--ink-weak); }
.trend-links a { padding: 2px 10px; height: 22px; border-radius: 2px; background: #F0F2F3; color: var(--ink-gray); font-weight: 500; display: inline-flex; align-items: center; transition: background-color 0.2s, color 0.2s; }
.trend-links a:hover { background: var(--brand); color: #fff; }
.nav-toggle { display: none; width: 36px; height: 36px; flex-direction: column; align-items: center; justify-content: center; gap: 3px; }
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--ink); border-radius: 1px; transition: transform 0.2s, opacity 0.2s; }
.nav-toggle.active span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }
.mobile-search-trigger { display: none; width: 36px; height: 36px; align-items: center; justify-content: center; color: var(--ink); }

/* ===== Mobile drawer ===== */
.drawer-overlay { position: fixed; inset: 0; background: rgba(26,29,33,0.3); z-index: 190; opacity: 0; visibility: hidden; transition: opacity 0.25s ease; }
.drawer-overlay.open { opacity: 1; visibility: visible; }
.mobile-drawer { position: fixed; top: 0; right: 0; bottom: 0; width: min(330px, 88vw); background: var(--bg-white); z-index: 200; transform: translateX(100%); transition: transform 0.3s ease; box-shadow: var(--shadow-float); display: flex; flex-direction: column; }
.mobile-drawer.open { transform: translateX(0); }
.drawer-inner { padding: 24px; display: flex; flex-direction: column; gap: 24px; height: 100%; overflow-y: auto; }
.drawer-head { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--line); padding-bottom: 16px; }
.drawer-head .brand { gap: 6px; }
.drawer-close { width: 36px; height: 36px; display: inline-flex; align-items: center; justify-content: center; color: var(--ink-gray); font-size: 20px; }
.drawer-nav { display: flex; flex-direction: column; gap: 4px; }
.drawer-nav a { display: block; padding: 13px 8px; font-size: 15px; font-weight: 500; color: var(--ink); border-bottom: 1px solid var(--line); transition: color 0.2s; }
.drawer-nav a:hover { color: var(--brand); }
.drawer-nav a.active { color: var(--brand); }
.drawer-search .search-box { width: 100%; }
.drawer-search .search-box input { width: 100%; }
.drawer-contact { display: inline-flex; align-items: center; justify-content: center; height: 40px; border: 1px solid var(--accent); border-radius: 4px; color: var(--accent); font-size: 14px; font-weight: 500; transition: background-color 0.2s; }
.drawer-contact:hover { background: rgba(61,90,108,0.06); }

/* ===== Category Hero ===== */
.category-hero { background: var(--bg-page); border-bottom: 1px solid var(--line); padding: 56px 0 48px; }
.category-hero-inner { max-width: 780px; }
.category-hero-line { display: block; width: 40px; height: 2px; background: var(--brand); margin-bottom: 24px; }
.category-hero h1 { font-size: 32px; line-height: 1.25; font-weight: 700; letter-spacing: -0.5px; margin-bottom: 16px; }
.category-desc { font-size: 15px; color: var(--ink-gray); line-height: 1.75; max-width: 680px; }
.category-hero-meta { display: flex; flex-wrap: wrap; gap: 12px 28px; margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 13px; font-weight: 500; color: var(--ink-weak); }

/* ===== Topic section ===== */
.topic-section { background: var(--bg-white); }
.topic-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.topic-card { background: var(--bg-white); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; transition: box-shadow 0.2s ease, transform 0.2s ease; }
.topic-card:first-child { grid-row: span 2; }
.topic-card:hover { box-shadow: var(--shadow-card); transform: translateY(-2px); }
.topic-card:hover .topic-title { color: var(--brand); }
.topic-icon { width: 40px; height: 40px; border-radius: 4px; background: #F2F3F5; display: inline-flex; align-items: center; justify-content: center; color: var(--accent); margin-bottom: 20px; }
.topic-title { font-size: 17px; font-weight: 600; margin-bottom: 10px; transition: color 0.2s; }
.topic-desc { font-size: 14px; line-height: 1.75; color: var(--ink-gray); margin-bottom: 18px; }
.topic-link { font-size: 13px; font-weight: 500; color: var(--brand); display: inline-flex; align-items: center; gap: 4px; }
.topic-link:hover { text-decoration: underline; }
.topic-card--main .topic-title { font-size: 20px; }
.topic-card--main .topic-desc { font-size: 15px; }

/* ===== Stats band ===== */
.stats-band { background: var(--dark-bg); padding: 56px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.stats-item { padding-top: 16px; border-top: 2px solid var(--brand); }
.stats-num { display: block; font-size: 32px; font-weight: 700; color: var(--brand); line-height: 1.2; font-feature-settings: "tnum"; }
.stats-label { display: block; font-size: 13px; color: #C8CDD2; margin-top: 8px; line-height: 1.5; }

/* ===== Focus section ===== */
.focus-section { background: var(--bg-page); }
.focus-list { border-top: 1px solid var(--line); }
.focus-item { display: grid; grid-template-columns: 80px 1fr auto; gap: 24px; padding: 32px 0; border-bottom: 1px solid var(--line); align-items: start; transition: background-color 0.2s; }
.focus-item:hover { background: var(--bg-white); }
.focus-item:hover .focus-title { color: var(--brand); }
.focus-index { font-size: 20px; font-weight: 700; color: var(--brand); font-feature-settings: "tnum"; line-height: 1.4; }
.focus-title { font-size: 18px; font-weight: 600; margin-bottom: 8px; transition: color 0.2s; }
.focus-text { font-size: 14px; color: var(--ink-gray); line-height: 1.7; max-width: 720px; }
.focus-tag { display: inline-flex; align-items: center; height: 22px; padding: 0 10px; background: #EEF0F2; color: var(--ink-gray); font-size: 12px; border-radius: 2px; font-weight: 500; white-space: nowrap; }

/* ===== Value section ===== */
.value-section { background: var(--bg-white); }
.value-block { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.value-visual { position: relative; border-radius: var(--radius); overflow: hidden; }
.value-visual img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: var(--radius); }
.value-visual-tag { position: absolute; left: 16px; bottom: 16px; display: inline-flex; align-items: center; height: 26px; padding: 0 12px; background: rgba(26,29,33,0.72); color: #fff; font-size: 12px; border-radius: 2px; letter-spacing: 0.3px; }
.value-list { margin-top: 28px; }
.value-list li { display: grid; grid-template-columns: 86px 1fr; gap: 16px; padding: 16px 0; border-top: 1px solid var(--line); }
.value-list li:last-child { border-bottom: 1px solid var(--line); }
.value-list strong { font-size: 15px; font-weight: 600; color: var(--ink); }
.value-list span { font-size: 14px; color: var(--ink-gray); line-height: 1.65; }

/* ===== Approach section ===== */
.approach-section { background: var(--bg-page); }
.approach-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.approach-step { background: #F0F2F3; border: 1px solid transparent; border-radius: var(--radius); padding: 32px 26px; transition: background-color 0.2s, box-shadow 0.2s; }
.approach-step--featured { background: var(--bg-white); border-top: 2px solid var(--brand); border-left: 1px solid var(--line); border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.approach-step:hover { background: var(--bg-white); box-shadow: var(--shadow-card); }
.step-num { font-size: 13px; font-weight: 600; color: var(--brand); display: block; margin-bottom: 18px; letter-spacing: 0.4px; }
.approach-step h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.approach-step p { font-size: 14px; color: var(--ink-gray); line-height: 1.7; }

/* ===== FAQ section ===== */
.faq-section { background: var(--bg-white); }
.faq-container { max-width: 800px; margin: 0 auto; }
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 4px; text-align: left; font-size: 15px; font-weight: 600; color: var(--ink); transition: color 0.2s; }
.faq-q:hover { color: var(--brand); }
.faq-icon { position: relative; width: 16px; height: 16px; flex: none; color: var(--ink-weak); }
.faq-icon::before, .faq-icon::after { content: ""; position: absolute; background: currentColor; transition: transform 0.2s ease; border-radius: 1px; }
.faq-icon::before { top: 50%; left: 0; right: 0; height: 2px; transform: translateY(-50%); }
.faq-icon::after { left: 50%; top: 0; bottom: 0; width: 2px; transform: translateX(-50%); }
.faq-item.open .faq-icon::after { transform: translateX(-50%) rotate(90deg); opacity: 0; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-a p { padding: 0 4px 20px; font-size: 14px; color: var(--ink-gray); line-height: 1.7; max-width: 680px; }
.faq-item.open .faq-q { color: var(--brand); }

/* ===== CTA section ===== */
.cta-section { background: var(--dark-bg); padding: 76px 0; position: relative; overflow: hidden; }
.cta-section::before { content: "S"; position: absolute; top: 50%; right: 4%; transform: translateY(-50%); font-size: 280px; font-weight: 700; color: rgba(255,255,255,0.04); line-height: 1; pointer-events: none; }
.cta-inner { position: relative; z-index: 1; text-align: center; max-width: 660px; margin: 0 auto; }
.cta-inner h2 { color: #fff; font-size: 26px; line-height: 1.3; margin-bottom: 16px; }
.cta-inner p { color: #C8CDD2; font-size: 15px; line-height: 1.75; margin-bottom: 32px; }
.btn-primary { display: inline-flex; align-items: center; justify-content: center; height: 40px; padding: 0 28px; background: var(--brand); color: #fff; font-size: 14px; font-weight: 500; border-radius: var(--radius); transition: background-color 0.2s, box-shadow 0.2s; }
.btn-primary:hover { background: var(--brand-dark); box-shadow: 0 4px 12px rgba(232,93,42,0.25); }
.btn-primary:active { background: var(--brand-darker); }

/* ===== Footer ===== */
.site-footer { background: var(--dark-bg-2); color: #9AA0A8; padding: 56px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.footer-logo { font-size: 18px; font-weight: 700; color: #fff; display: flex; align-items: baseline; gap: 6px; }
.footer-logo sup { font-size: 11px; font-weight: 600; color: #9AA0A8; }
.footer-brand p { font-size: 13px; line-height: 1.7; color: #8B9199; margin: 14px 0 18px; max-width: 280px; }
.footer-lang { display: inline-flex; align-items: center; height: 24px; padding: 0 12px; border: 1px solid rgba(255,255,255,0.18); border-radius: 2px; font-size: 12px; color: #C8CDD2; }
.footer-col h4, .site-footer h4[style] { font-size: 14px; font-weight: 600; color: #fff; margin-bottom: 16px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a { font-size: 13px; color: #8B9199; transition: color 0.2s; }
.footer-col ul a:hover { color: var(--brand); }
.footer-contact { display: flex; flex-direction: column; gap: 12px; }
.footer-contact li { display: flex; align-items: flex-start; gap: 10px; font-size: 13px; color: #8B9199; line-height: 1.5; }
.footer-contact svg { width: 16px; height: 16px; flex: none; margin-top: 2px; color: #C2C7CD; }
.footer-bottom { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; padding-top: 24px; font-size: 12px; color: #6B7278; }
.footer-bottom .domain { color: #8B9199; }

/* ===== Reveal animation ===== */
.reveal { opacity: 0; transform: translateY(12px); transition: opacity 0.4s ease-out, transform 0.4s ease-out; }
.reveal.visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .section { padding: 64px 0; }
  .topic-grid { grid-template-columns: 1fr 1fr; }
  .topic-card:first-child { grid-row: auto; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-links a { padding: 0 12px; }
  .trend-links { display: none; }
  .value-block { grid-template-columns: 1fr; gap: 32px; }
  .approach-grid { grid-template-columns: 1fr; gap: 20px; }
}
@media (max-width: 768px) {
  .section { padding: 52px 0; }
  .container { padding: 0 16px; }
  .header-top { height: auto; padding: 10px 0; border-bottom: 1px solid var(--line); }
  .header-top-inner { padding: 0 16px; }
  .header-nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .mobile-search-trigger { display: inline-flex; }
  .top-contact { display: none; }
  .lang-badge { display: none; }
  .category-hero h1 { font-size: 28px; }
  .category-hero { padding: 40px 0 32px; }
  .category-hero-meta { gap: 8px 16px; font-size: 12px; }
  .topic-grid { grid-template-columns: 1fr; }
  .focus-item { grid-template-columns: 48px 1fr; gap: 16px; padding: 24px 0; }
  .focus-tag { grid-column: 2; }
  .stats-band { padding: 44px 0; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stats-item { padding-top: 14px; }
  .stats-num { font-size: 26px; }
  .stats-label { font-size: 12px; }
  .section-head h2 { font-size: 24px; }
  .section-desc { font-size: 14px; }
  .cta-inner h2 { font-size: 22px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .date-inline { display: block; }
}
@media (max-width: 520px) {
  .topic-card { padding: 24px 20px; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .stats-num { font-size: 24px; }
  .category-hero-line { margin-bottom: 16px; }
  .category-desc { font-size: 14px; }
  .focus-index { font-size: 18px; }
  .value-list li { grid-template-columns: 1fr; gap: 4px; }
  .footer-contact li { font-size: 12px; }
}