/* roulang page: index */
:root {
  --primary: #14342B;
  --primary-dark: #0A1A15;
  --accent: #A8844C;
  --accent-light: #C09A5E;
  --accent-bg: rgba(168,132,76,0.12);
  --bg: #FAF7F2;
  --card-bg: #FFFFFF;
  --text: #1F2622;
  --text-secondary: #6E7A74;
  --text-light: #8A938D;
  --border: rgba(20,52,43,0.12);
  --card-border: rgba(20,52,43,0.08);
  --shadow: 0 12px 24px rgba(20,52,43,0.08);
  --shadow-sm: 0 4px 12px rgba(20,52,43,0.05);
  --radius: 12px;
  --radius-sm: 6px;
  --radius-pill: 999px;
  --section-padding: 96px;
  --font-serif: 'Noto Serif SC', 'Songti SC', serif;
  --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --max-width: 1200px;
  --header-h: 64px;
}
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
button,
input {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
  background: none;
}
ul,
ol {
  list-style: none;
}
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 48px;
}
.section {
  padding: var(--section-padding) 0;
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 48px;
}
.section-title {
  font-family: var(--font-serif);
  font-size: 34px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text);
}
.section-sub {
  font-size: 16px;
  font-weight: 400;
  color: var(--text-secondary);
  margin-top: 10px;
  max-width: 460px;
}
.section-more {
  font-size: 15px;
  font-weight: 500;
  color: var(--primary);
  white-space: nowrap;
  transition: color .3s;
}
.section-more i {
  font-style: normal;
  display: inline-block;
  transition: transform .3s;
}
.section-more:hover {
  color: var(--accent);
}
.section-more:hover i {
  transform: translateX(4px);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  cursor: pointer;
  transition: all .3s;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(168,132,76,0.25);
}
.btn-outline {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.5);
  color: #fff;
}
.btn-outline:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.8);
}
.btn-dark {
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-sm);
}
.btn-dark:hover {
  background: #1E4A3C;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(20,52,43,0.2);
}
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  background: var(--accent-bg);
  color: var(--primary);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.4;
}
/* ===== Header ===== */
.site-header {
  background: var(--bg);
}
.brand-bar {
  height: var(--header-h);
  border-bottom: 1px solid var(--border);
  transition: transform .35s ease;
}
.brand-bar .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  background: var(--primary);
  color: #fff;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  border-radius: 8px;
  letter-spacing: .5px;
}
.logo-text {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 1px;
}
.brand-right {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 1;
  justify-content: flex-end;
}
.search-box {
  position: relative;
  display: flex;
  align-items: center;
  height: 40px;
  width: 360px;
  border-radius: var(--radius-pill);
  background: #F0EDE7;
  transition: box-shadow .3s, background .3s, width .3s;
}
.search-box:focus-within {
  background: #fff;
  box-shadow: 0 0 0 1px var(--primary), 0 0 0 4px rgba(20,52,43,0.08);
}
.search-box .search-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  color: var(--text-secondary);
  flex-shrink: 0;
}
.search-box input {
  width: 100%;
  height: 100%;
  background: transparent;
  font-size: 14px;
  color: var(--text);
}
.search-box input::placeholder {
  color: var(--text-light);
}
.search-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 20px;
  border-radius: 50%;
  cursor: pointer;
}
.search-toggle:hover {
  background: rgba(20,52,43,0.06);
}
.nav-cta {
  height: 44px;
  padding: 0 24px;
  flex-shrink: 0;
}
.channel-bar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(250,247,242,0.92);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow .3s;
}
.channel-bar.scrolled {
  box-shadow: 0 4px 16px rgba(20,52,43,0.06);
}
.channel-bar .container {
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  white-space: nowrap;
}
.channel-bar .container::-webkit-scrollbar {
  display: none;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 12px 20px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-pill);
  position: relative;
  transition: color .3s, background .3s;
  flex-shrink: 0;
}
.nav-link:hover {
  color: var(--primary);
  background: rgba(20,52,43,0.04);
}
.nav-link.active {
  color: var(--primary);
  background: rgba(20,52,43,0.06);
}
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 6px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
/* ===== Hero ===== */
.hero {
  position: relative;
  background:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(135deg, #102A24 0%, #0A1A15 100%);
  background-size: 32px 32px, 32px 32px, 100% 100%;
  padding: 88px 0 0;
  color: #fff;
  overflow: hidden;
}
.hero .container {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 64px;
  align-items: center;
}
.hero-content {
  padding-bottom: 72px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border: 1px solid rgba(168,132,76,0.4);
  border-radius: var(--radius-pill);
  background: rgba(168,132,76,0.12);
  color: var(--accent-light);
  font-size: 13px;
  letter-spacing: .5px;
  margin-bottom: 28px;
}
.hero-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}
.hero h1 {
  font-family: var(--font-serif);
  font-size: 52px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 1px;
  margin-bottom: 22px;
}
.hero h1 .accent {
  color: var(--accent-light);
}
.hero-lead {
  font-size: 18px;
  line-height: 1.7;
  color: rgba(255,255,255,0.75);
  max-width: 460px;
  margin-bottom: 38px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-visual {
  position: relative;
  padding-bottom: 48px;
}
.hero-visual .frame {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 24px 48px rgba(0,0,0,0.3);
}
.hero-visual .frame::before {
  content: "";
  position: absolute;
  top: -8px;
  left: -8px;
  width: 60%;
  height: 60%;
  border-top: 1px solid var(--accent);
  border-left: 1px solid var(--accent);
  border-radius: 4px 0 0 0;
  z-index: 2;
  pointer-events: none;
}
.hero-visual .frame img {
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
  border-radius: var(--radius);
}
.hero-stats {
  border-top: 1px solid rgba(255,255,255,0.1);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}
.stat-item {
  padding: 24px 16px;
  text-align: center;
  border-right: 1px solid rgba(255,255,255,0.08);
}
.stat-item:first-child {
  padding-left: 0;
  text-align: left;
}
.stat-item:last-child {
  border-right: none;
  padding-right: 0;
  text-align: right;
}
.stat-number {
  display: inline-flex;
  align-items: baseline;
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}
.stat-badge {
  display: inline-block;
  width: auto;
  padding: 3px 10px;
  margin-left: 6px;
  background: var(--accent);
  color: #fff;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 500;
  vertical-align: middle;
  line-height: 1.6;
}
.stat-label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: rgba(255,255,255,0.6);
}
/* ===== Steps ===== */
.steps {
  background: var(--bg);
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--border);
}
.step-item {
  position: relative;
  padding: 40px 48px 40px 0;
  margin-top: 24px;
}
.step-item:nth-child(2) {
  margin-top: 48px;
}
.step-item:nth-child(3) {
  margin-top: 72px;
}
.step-item::before {
  content: "";
  position: absolute;
  top: 36px;
  right: 0;
  width: 1px;
  height: calc(100% - 40px);
  background: var(--border);
}
.step-item:last-child::before {
  display: none;
}
.step-number {
  font-family: var(--font-serif);
  font-size: 40px;
  font-weight: 600;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  display: block;
  transition: transform .4s ease, color .4s ease;
}
.step-item:hover .step-number {
  transform: translateY(-4px);
}
.step-title {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin: 18px 0 12px;
  position: relative;
  transition: padding-left .3s;
}
.step-item:hover .step-title {
  padding-left: 16px;
}
.step-item:hover .step-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 12px;
  height: 2px;
  background: var(--accent);
}
.step-desc {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
}
.step-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 32px;
  font-size: 15px;
  font-weight: 500;
  color: var(--primary);
}
.step-more i {
  font-style: normal;
  transition: transform .3s;
}
.step-more:hover {
  color: var(--accent);
}
.step-more:hover i {
  transform: translateX(4px);
}
/* ===== Cases ===== */
.cases {
  background:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(135deg, #0C1F19 0%, #0A1A15 100%);
  background-size: 40px 40px, 40px 40px, 100% 100%;
  color: #fff;
}
.cases .section-title {
  color: #fff;
}
.cases .section-sub {
  color: rgba(255,255,255,0.6);
}
.cases-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.case-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
  transition: transform .4s ease, box-shadow .4s ease;
  position: relative;
}
.case-card:nth-child(1) {
  margin-top: 0;
}
.case-card:nth-child(2) {
  margin-top: 32px;
}
.case-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0,0,0,0.25);
}
.case-card-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
}
.case-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.case-card:hover .case-card-image img {
  transform: scale(1.03);
}
.case-card-image::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s ease;
}
.case-card:hover .case-card-image::after {
  transform: scaleX(1);
}
.case-card-body {
  padding: 28px 28px 32px;
}
.case-card .badge {
  margin-bottom: 16px;
}
.case-card-title {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 8px;
}
.case-card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 18px;
}
.case-result {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.case-result-label {
  font-size: 13px;
  color: var(--text-light);
  margin-left: 6px;
  font-weight: 400;
}
/* ===== FAQ ===== */
.faq-section {
  background: var(--bg);
}
.faq-wrap {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-item:first-child {
  border-top: 1px solid var(--border);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 4px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  transition: color .3s;
}
.faq-question:hover {
  color: var(--primary);
}
.faq-icon {
  position: relative;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  transition: transform .3s ease;
}
.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  background: var(--accent);
  border-radius: 2px;
}
.faq-icon::before {
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 2px;
}
.faq-icon::after {
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 18px;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease;
}
.faq-answer-inner {
  padding: 0 4px 24px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
}
/* ===== News / CMS ===== */
.news-section {
  background: var(--bg);
  border-top: 1px solid var(--border);
}
.news-grid {
  display: grid;
  grid-template-columns: 8fr 4fr;
  gap: 48px;
  align-items: start;
}
.news-list {
  border-top: 1px solid var(--border);
}
.news-row {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 26px 0;
  border-bottom: 1px solid var(--border);
  transition: background .3s;
}
.news-row-info {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}
.news-row-title {
  font-size: 18px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.5;
  transition: color .3s;
  position: relative;
}
.news-row-title::after {
  content: "→";
  display: inline-block;
  margin-left: 8px;
  color: var(--accent);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity .3s, transform .3s;
}
.news-row:hover .news-row-title {
  color: var(--accent);
}
.news-row:hover .news-row-title::after {
  opacity: 1;
  transform: translateX(0);
}
.news-row-excerpt {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-row-time {
  font-size: 13px;
  color: var(--text-light);
  font-variant-numeric: tabular-nums;
}
.news-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 64px 24px;
  border-bottom: 1px solid var(--border);
  text-align: center;
}
.news-empty-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(20,52,43,0.06);
  color: var(--text-light);
  font-size: 24px;
  margin-bottom: 16px;
}
.news-empty p {
  font-size: 14px;
  color: var(--text-light);
}
.news-sidebar {
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.side-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}
.side-card-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}
.recommend-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.recommend-item {
  display: flex;
  align-items: center;
  gap: 14px;
  text-align: left;
}
.recommend-thumb {
  width: 56px;
  height: 56px;
  border-radius: 8px;
  overflow: hidden;
  flex-shrink: 0;
}
.recommend-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.recommend-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color .3s;
}
.recommend-item:hover .recommend-title {
  color: var(--accent);
}
.recommend-meta {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 4px;
}
.quick-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.quick-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--primary);
  border-bottom: 1px solid var(--border);
  transition: color .3s, padding-left .3s;
}
.quick-nav a:last-child {
  border-bottom: none;
}
.quick-nav a::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 4px;
  background: var(--accent);
  flex-shrink: 0;
}
.quick-nav a:hover {
  color: var(--accent);
  padding-left: 6px;
}
/* ===== CTA ===== */
.cta-section {
  position: relative;
  background: linear-gradient(135deg, #14342B 0%, #0A1A15 100%);
  color: #fff;
  text-align: center;
  overflow: hidden;
  padding: 96px 0;
}
.cta-section::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 300px;
  height: 300px;
  border: 1px solid rgba(168,132,76,0.3);
  border-radius: 50%;
  pointer-events: none;
}
.cta-section::after {
  content: "";
  position: absolute;
  bottom: -120px;
  left: -80px;
  width: 240px;
  height: 240px;
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: 50%;
  pointer-events: none;
}
.cta-inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto;
}
.cta-title {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 16px;
}
.cta-lead {
  font-size: 16px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 36px;
  line-height: 1.7;
}
.cta-inner .btn-primary {
  height: 52px;
  padding: 0 40px;
  font-size: 16px;
}
.cta-note {
  margin-top: 18px;
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}
/* ===== Footer ===== */
.site-footer {
  background: #0A1A15;
  color: #8A938D;
  padding-top: 72px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 56px;
}
.footer-brand .logo {
  margin-bottom: 18px;
}
.footer-brand .logo-mark {
  background: var(--accent);
}
.footer-brand .logo-text {
  color: #fff;
}
.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: #8A938D;
  max-width: 280px;
  margin-bottom: 24px;
}
.footer-social {
  display: flex;
  gap: 10px;
}
.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,0.06);
  color: #8A938D;
  transition: background .3s, color .3s;
}
.footer-social a:hover {
  background: var(--accent);
  color: #fff;
}
.footer-social a svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}
.footer-title {
  font-size: 14px;
  font-weight: 500;
  color: rgba(255,255,255,0.9);
  margin-bottom: 18px;
  letter-spacing: .5px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 14px;
  color: #8A938D;
  transition: color .3s;
}
.footer-links a:hover {
  color: var(--accent);
}
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: #8A938D;
}
.footer-contact-item svg {
  width: 14px;
  height: 14px;
  fill: var(--accent);
  flex-shrink: 0;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  color: #8A938D;
}
/* ===== Back to top ===== */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all .35s ease;
  z-index: 999;
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  background: var(--accent);
}
.back-to-top svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}
/* ===== Mobile Search Layer ===== */
.mobile-search-layer {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s ease;
}
.mobile-search-layer.open {
  opacity: 1;
  visibility: visible;
}
.mobile-search-layer .search-inner {
  width: 100%;
  max-width: 480px;
  text-align: center;
}
.mobile-search-layer .search-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(20,52,43,0.06);
  color: var(--text);
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.mobile-search-layer input {
  width: 100%;
  height: 52px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0 20px;
  font-size: 16px;
  background: #fff;
  color: var(--text);
}
.mobile-search-layer input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(20,52,43,0.08);
}
.mobile-search-layer input::placeholder {
  color: var(--text-light);
}
/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .container {
    padding: 0 32px;
  }
  .hero .container {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .hero-content {
    padding-bottom: 0;
  }
  .hero-visual {
    padding-bottom: 56px;
  }
  .hero h1 {
    font-size: 42px;
  }
  .steps-grid {
    grid-template-columns: 1fr 1fr;
  }
  .step-item:nth-child(3) {
    margin-top: 24px;
  }
  .step-item:nth-child(3)::before {
    display: none;
  }
  .cases-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .case-card:nth-child(2) {
    margin-top: 0;
  }
  .news-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .news-sidebar {
    flex-direction: row;
    align-items: stretch;
  }
  .side-card {
    flex: 1;
  }
  .search-box {
    width: 280px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}
@media (max-width: 767px) {
  :root {
    --section-padding: 56px;
  }
  .container {
    padding: 0 24px;
  }
  .brand-bar {
    height: 58px;
  }
  .logo-mark {
    width: 36px;
    height: 36px;
    font-size: 15px;
  }
  .logo-text {
    font-size: 16px;
  }
  .search-box {
    display: none;
  }
  .search-toggle {
    display: flex;
  }
  .nav-cta {
    display: none;
  }
  .channel-bar .container {
    gap: 2px;
  }
  .nav-link {
    padding: 10px 14px;
    font-size: 14px;
  }
  .hero {
    padding: 56px 0 0;
  }
  .hero h1 {
    font-size: 32px;
    line-height: 1.25;
  }
  .hero-lead {
    font-size: 16px;
    margin-bottom: 28px;
  }
  .hero-actions {
    flex-direction: column;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-visual {
    padding-bottom: 48px;
  }
  .hero-stats {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .stat-item,
  .stat-item:first-child,
  .stat-item:last-child {
    padding: 18px 0;
    text-align: center;
    border-right: none;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .stat-item:last-child {
    border-bottom: none;
  }
  .section-title {
    font-size: 26px;
  }
  .section-sub {
    font-size: 15px;
  }
  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 32px;
  }
  .steps-grid {
    grid-template-columns: 1fr;
  }
  .step-item,
  .step-item:nth-child(2),
  .step-item:nth-child(3) {
    margin-top: 0;
    padding: 28px 0;
    border-bottom: 1px solid var(--border);
  }
  .step-item::before {
    display: none;
  }
  .step-item:last-child {
    border-bottom: none;
  }
  .cases-grid {
    grid-template-columns: 1fr;
  }
  .case-card-body {
    padding: 22px;
  }
  .faq-question {
    font-size: 15px;
    padding: 20px 0;
  }
  .news-sidebar {
    flex-direction: column;
  }
  .news-row {
    gap: 14px;
    padding: 20px 0;
  }
  .news-row-title {
    font-size: 16px;
  }
  .cta-section {
    padding: 64px 0;
  }
  .cta-title {
    font-size: 28px;
  }
  .cta-lead {
    font-size: 15px;
  }
  .cta-inner .btn-primary {
    width: 100%;
    height: 50px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    padding: 20px 24px;
    font-size: 12px;
  }
  .back-to-top {
    right: 16px;
    bottom: 16px;
    width: 40px;
    height: 40px;
  }
}
@media (max-width: 520px) {
  .container {
    padding: 0 20px;
  }
  .hero h1 {
    font-size: 28px;
  }
  .hero-lead {
    font-size: 15px;
  }
  .section-title {
    font-size: 24px;
  }
  .case-result {
    font-size: 22px;
  }
  .recommend-thumb {
    width: 48px;
    height: 48px;
  }
  .side-card {
    padding: 20px;
  }
}

/* roulang page: category1 */
:root {
  --c-primary: #14342B;
  --c-accent: #A8844C;
  --c-page-bg: #FAF7F2;
  --c-dark: #0A1A15;
  --c-dark-2: #102A24;
  --c-text: #1F2622;
  --c-text-2: #6E7A74;
  --c-border: rgba(20, 52, 43, 0.12);
  --c-border-light: rgba(255, 255, 255, 0.08);
  --c-white: #FFFFFF;
  --c-success: #3E7B5A;
  --r-lg: 12px;
  --r-sm: 6px;
  --shadow: 0 12px 24px rgba(20, 52, 43, 0.08);
  --shadow-sm: 0 4px 12px rgba(20, 52, 43, 0.06);
  --container-w: 1200px;
  --space: 96px;
  --space-mobile: 56px;
  --font-serif: 'Noto Serif SC', serif;
  --font-sans: 'Noto Sans SC', system-ui, -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-text);
  background: var(--c-page-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

button {
  font-family: var(--font-sans);
  cursor: pointer;
}

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 48px;
}

.section-head {
  margin-bottom: 48px;
  max-width: 640px;
}

.section-head .section-overline {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .08em;
  color: var(--c-accent);
  text-transform: uppercase;
  margin-bottom: 12px;
  border-left: 3px solid var(--c-accent);
  padding-left: 12px;
}

.section-head h2 {
  font-family: var(--font-serif);
  font-size: 34px;
  font-weight: 600;
  color: var(--c-primary);
  line-height: 1.3;
  margin-bottom: 12px;
}

.section-head p {
  font-size: 16px;
  color: var(--c-text-2);
  line-height: 1.75;
}

.section-overline.light {
  color: var(--c-accent);
  border-left-color: var(--c-accent);
}

/* ========== Header / Navigation ========== */
.site-header {
  position: relative;
  z-index: 1000;
}

.brand-bar {
  background: var(--c-page-bg);
  border-bottom: 1px solid var(--c-border);
  transition: margin-top .35s cubic-bezier(.4, 0, .2, 1);
  will-change: margin-top;
}

.brand-bar.brand-hidden {
  margin-top: -65px;
}

.brand-bar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-mark {
  background: var(--c-primary);
  color: #fff;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 17px;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: .03em;
}

.logo-text {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  color: var(--c-primary);
  letter-spacing: .02em;
}

.brand-right {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 1;
  justify-content: flex-end;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #F0EDE7;
  border-radius: 999px;
  height: 40px;
  padding: 0 16px;
  width: 300px;
  border: 1px solid transparent;
  transition: all .3s ease;
}

.search-box:focus-within {
  background: #fff;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(20, 52, 43, 0.08);
  width: 380px;
}

.search-box .search-icon {
  display: flex;
  color: var(--c-text-2);
}

.search-box input {
  background: none;
  border: none;
  outline: none;
  font-size: 14px;
  color: var(--c-text);
  width: 100%;
  font-family: var(--font-sans);
}

.search-box input::placeholder {
  color: #9BA39E;
}

.search-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  border: 1px solid var(--c-border);
  background: #fff;
  align-items: center;
  justify-content: center;
  color: var(--c-primary);
  transition: all .25s;
}

.search-toggle:hover {
  border-color: var(--c-primary);
  background: rgba(20, 52, 43, 0.04);
}

.channel-bar {
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(250, 247, 242, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-border);
}

.channel-bar .container {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 52px;
  overflow-x: auto;
  scrollbar-width: none;
}

.channel-bar .container::-webkit-scrollbar {
  display: none;
}

.nav-link {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--c-text-2);
  padding: 14px 4px 10px;
  white-space: nowrap;
  transition: color .25s;
}

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

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

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

.nav-link.active::after {
  right: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--r-sm);
  height: 44px;
  padding: 0 28px;
  border: 1px solid transparent;
  transition: all .3s ease;
  white-space: nowrap;
}

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

.btn-dark:hover {
  background: var(--c-dark-2);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

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

.btn-accent:hover {
  background: #B89458;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(168, 132, 76, 0.28);
}

.btn-outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.5);
  color: #fff;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.8);
}

.btn-lg {
  height: 50px;
  padding: 0 36px;
  font-size: 16px;
}

.nav-cta {
  height: 40px;
  padding: 0 22px;
  font-size: 14px;
}

/* ========== Breadcrumb ========== */
.breadcrumb {
  margin-bottom: 28px;
  font-size: 14px;
  color: var(--c-text-2);
}

.breadcrumb a {
  color: var(--c-text-2);
  transition: color .25s;
}

.breadcrumb a:hover {
  color: var(--c-primary);
}

.breadcrumb .sep {
  margin: 0 10px;
  color: rgba(20, 52, 43, 0.35);
}

.breadcrumb .current {
  color: var(--c-primary);
  font-weight: 500;
}

/* ========== Page Head ========== */
.page-head {
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--c-border);
  background: var(--c-page-bg);
}

.page-head h1 {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 700;
  color: var(--c-primary);
  line-height: 1.3;
  margin-bottom: 16px;
}

.page-head .page-lead {
  font-size: 16px;
  color: var(--c-text-2);
  max-width: 680px;
  line-height: 1.8;
}

/* ========== Topic Cards ========== */
.topic-grid {
  padding: var(--space) 0;
  background: var(--c-page-bg);
}

.topic-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  align-items: start;
}

.topic-card {
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: all .4s cubic-bezier(.25, .8, .25, 1);
  display: flex;
  flex-direction: column;
}

.topic-card.offset {
  margin-top: 28px;
}

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

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

.topic-media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--c-dark);
}

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

.topic-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.topic-tag {
  display: inline-block;
  align-self: flex-start;
  background: rgba(168, 132, 76, 0.12);
  color: var(--c-primary);
  font-size: 12px;
  font-weight: 500;
  border-radius: 999px;
  padding: 4px 12px;
  margin-bottom: 14px;
}

.topic-body h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--c-primary);
  margin-bottom: 10px;
  line-height: 1.4;
}

.topic-body p {
  font-size: 14px;
  color: var(--c-text-2);
  line-height: 1.75;
  flex: 1;
  margin-bottom: 18px;
}

.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--c-primary);
  transition: gap .3s ease, color .25s;
}

.arrow-link span {
  font-size: 16px;
  line-height: 1;
  transition: transform .3s ease;
}

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

.arrow-link:hover span {
  transform: translateX(2px);
}

/* ========== Key Points ========== */
.key-points {
  padding: var(--space) 0;
  background: linear-gradient(135deg, var(--c-dark-2) 0%, var(--c-dark) 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.key-points::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 320px;
  height: 320px;
  border: 1px solid rgba(168, 132, 76, 0.3);
  border-radius: 50%;
  pointer-events: none;
}

.points-inner {
  max-width: 760px;
}

.points-inner .section-overline {
  color: var(--c-accent);
  border-left-color: var(--c-accent);
}

.points-inner h2 {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 600;
  margin-bottom: 32px;
  color: #fff;
}

.point-list {
  list-style: none;
  display: grid;
  gap: 0;
}

.point-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 15px;
  font-weight: 500;
  color: #E8EEE9;
  line-height: 1.6;
}

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

.point-list .check-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 2px;
}

/* ========== Process ========== */
.process {
  padding: var(--space) 0;
  background: var(--c-page-bg);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  position: relative;
}

.process-step {
  position: relative;
  padding-top: 20px;
  border-top: 1px solid var(--c-border);
  transition: padding-top .3s ease;
}

.process-step:hover {
  padding-top: 14px;
}

.process-step:hover .step-num {
  transform: translateY(-4px);
}

.step-num {
  display: block;
  font-family: var(--font-serif);
  font-size: 40px;
  font-weight: 700;
  color: var(--c-accent);
  line-height: 1;
  margin-bottom: 20px;
  transition: transform .3s ease;
}

.process-step h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--c-primary);
  margin-bottom: 10px;
}

.process-step p {
  font-size: 14px;
  color: var(--c-text-2);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ========== FAQ ========== */
.faq-section {
  padding: var(--space) 0 80px;
  background: var(--c-page-bg);
  border-top: 1px solid var(--c-border);
}

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

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

.faq-item:first-of-type {
  border-top: 1px solid var(--c-border);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  background: none;
  border: none;
  font-size: 16px;
  font-weight: 500;
  color: var(--c-text);
  text-align: left;
  font-family: var(--font-sans);
  transition: color .25s;
}

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

.faq-icon {
  position: relative;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--c-accent);
  border-radius: 1px;
  transition: transform .35s ease;
}

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

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

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease;
}

.faq-item.open .faq-answer {
  max-height: 320px;
}

.faq-answer p {
  padding-bottom: 20px;
  color: var(--c-text-2);
  font-size: 15px;
  line-height: 1.8;
  padding-right: 32px;
}

/* ========== CTA Banner ========== */
.cta-banner {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--c-dark-2) 0%, var(--c-dark) 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  right: -60px;
  top: -60px;
  width: 300px;
  height: 300px;
  border: 1px solid rgba(168, 132, 76, 0.35);
  border-radius: 50%;
  pointer-events: none;
}

.cta-banner .container {
  position: relative;
  z-index: 1;
}

.cta-banner h2 {
  font-family: var(--font-serif);
  font-size: 34px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
}

.cta-banner .cta-sub {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 36px;
  max-width: 460px;
  margin-left: auto;
  margin-right: auto;
}

.cta-note {
  margin-top: 20px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

/* ========== Footer ========== */
.site-footer {
  background: var(--c-dark);
  color: #fff;
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand .logo .logo-mark {
  background: var(--c-accent);
  color: var(--c-dark);
}

.footer-brand .logo .logo-text {
  color: #fff;
}

.footer-desc {
  font-size: 14px;
  color: #8A938D;
  line-height: 1.8;
  max-width: 260px;
  margin-bottom: 24px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #a7b0ab;
  transition: all .3s ease;
}

.footer-social a:hover {
  color: var(--c-accent);
  border-color: var(--c-accent);
  background: rgba(168, 132, 76, 0.08);
}

.footer-social svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.footer-title {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: .02em;
}

.footer-links {
  list-style: none;
  display: grid;
  gap: 10px;
}

.footer-links a {
  font-size: 14px;
  color: #8A938D;
  line-height: 1.5;
  transition: color .25s;
}

.footer-links a:hover {
  color: var(--c-accent);
}

.footer-contact {
  list-style: none;
  display: grid;
  gap: 14px;
}

.footer-contact li {
  display: flex;
  gap: 12px;
  font-size: 14px;
  color: #8A938D;
  line-height: 1.6;
}

.footer-contact svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  margin-top: 4px;
  stroke: var(--c-accent);
  fill: none;
  stroke-width: 1.8;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 14px;
  color: #8A938D;
}

/* ========== Back to Top ========== */
.back-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--c-primary);
  color: #fff;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all .4s ease;
  z-index: 900;
  box-shadow: 0 8px 20px rgba(20, 52, 43, 0.2);
}

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

.back-top:hover {
  background: var(--c-accent);
}

.back-top svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ========== Mobile Search Overlay ========== */
.mobile-search-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10, 26, 21, 0.97);
  z-index: 2000;
  align-items: flex-start;
  justify-content: center;
  padding: 120px 24px;
  opacity: 0;
  transition: opacity .3s ease;
}

.mobile-search-overlay.open {
  display: flex;
  opacity: 1;
}

.mobile-search-overlay .search-inner {
  width: 100%;
  max-width: 480px;
  display: flex;
  gap: 10px;
}

.mobile-search-overlay input {
  flex: 1;
  height: 48px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  padding: 0 20px;
  font-size: 16px;
  outline: none;
  font-family: var(--font-sans);
}

.mobile-search-overlay input::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

.mobile-search-overlay input:focus {
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(168, 132, 76, 0.2);
}

.mobile-search-overlay .btn-close-search {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  transition: background .25s;
}

.mobile-search-overlay .btn-close-search:hover {
  background: rgba(255, 255, 255, 0.18);
}

/* ========== Responsive ========== */
@media (max-width: 1023px) {
  .container {
    padding: 0 32px;
  }

  .brand-bar .container {
    height: 60px;
  }

  .search-box {
    width: 240px;
  }

  .search-box:focus-within {
    width: 300px;
  }

  .topic-cards {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .topic-card.offset {
    margin-top: 0;
  }

  .topic-card:nth-child(3) {
    grid-column: 1 / -1;
    max-width: 520px;
    margin: 0 auto;
  }

  .process-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 767px) {
  .container {
    padding: 0 24px;
  }

  .brand-bar .container {
    height: 56px;
  }

  .brand-right {
    gap: 10px;
  }

  .search-box {
    display: none;
  }

  .search-toggle {
    display: flex;
  }

  .nav-cta {
    display: none;
  }

  .channel-bar .container {
    gap: 20px;
  }

  .nav-link {
    font-size: 14px;
    padding: 14px 2px 10px;
  }

  .page-head {
    padding: 44px 0 32px;
  }

  .page-head h1 {
    font-size: 26px;
  }

  .page-head .page-lead {
    font-size: 15px;
  }

  .section-head h2 {
    font-size: 24px;
  }

  .section-head p {
    font-size: 15px;
  }

  .topic-grid {
    padding: var(--space-mobile) 0;
  }

  .topic-cards {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .topic-card:nth-child(3) {
    grid-column: auto;
    max-width: none;
  }

  .topic-body {
    padding: 20px;
  }

  .key-points {
    padding: var(--space-mobile) 0;
  }

  .points-inner h2 {
    font-size: 24px;
  }

  .point-list li {
    font-size: 14px;
  }

  .process {
    padding: var(--space-mobile) 0;
  }

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

  .faq-section {
    padding: var(--space-mobile) 0 48px;
  }

  .faq-question {
    font-size: 15px;
  }

  .faq-answer p {
    font-size: 14px;
  }

  .cta-banner {
    padding: 56px 0;
  }

  .cta-banner h2 {
    font-size: 26px;
  }

  .btn-lg {
    width: 100%;
  }

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

  .back-top {
    bottom: 20px;
    right: 20px;
  }
}

/* roulang page: article */
:root {
  --primary: #14342B;
  --primary-deep: #102A24;
  --primary-dark: #0A1A15;
  --accent: #A8844C;
  --accent-light: #B8915A;
  --bg: #FAF7F2;
  --text: #1F2622;
  --text-weak: #6E7A74;
  --line: rgba(20, 52, 43, 0.12);
  --card: #FFFFFF;
  --ok: #3E7B5A;
  --warn: #C07D3E;
  --err: #B5503F;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 12px 24px rgba(20, 52, 43, 0.08);
  --max-w: 1200px;
  --font-serif: "Noto Serif SC", Georgia, "Songti SC", serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", 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-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color .25s;
}

a:hover {
  color: var(--accent);
}

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

input, textarea {
  font-family: inherit;
}

ul, ol {
  list-style-position: inside;
}

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

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 48px;
}

/* Header */
.site-header {
  position: relative;
  z-index: 200;
  background: var(--bg);
}

.brand-bar {
  height: 64px;
  border-bottom: 1px solid var(--line);
  background: rgba(250, 247, 242, 0.95);
  transition: transform .35s ease, opacity .35s ease;
}

.brand-bar.hide {
  transform: translateY(-100%);
}

.brand-bar .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: inline-flex;
  align-items: flex-end;
  gap: 6px;
}

.logo-mark {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: .5px;
  line-height: 1;
}

.logo-text {
  font-size: 13px;
  color: var(--primary);
  letter-spacing: 4px;
  padding-bottom: 2px;
}

.brand-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 360px;
  height: 40px;
  padding: 0 16px;
  background: #F0EDE7;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: border-color .3s, box-shadow .3s, background .3s, width .3s;
}

.search-box:focus-within {
  background: #fff;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(20, 52, 43, 0.08);
  width: 400px;
}

.search-icon {
  color: var(--text-weak);
  display: flex;
}

.search-box input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-size: 14px;
  color: var(--text);
  min-width: 0;
}

.search-box input::placeholder {
  color: #9AA39E;
}

.search-toggle {
  display: none;
  width: 44px;
  height: 44px;
  color: var(--primary);
  align-items: center;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 6px;
  font-weight: 500;
  transition: transform .25s, background .25s, color .25s, border-color .25s, box-shadow .25s;
}

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

.btn-dark:hover {
  background: #1A4237;
  color: #fff;
  transform: translateY(-1px);
}

.nav-cta {
  height: 44px;
  padding: 0 24px;
  font-size: 14px;
}

.channel-bar {
  position: sticky;
  top: 0;
  background: rgba(250, 247, 242, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  z-index: 150;
}

.channel-bar .container {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 56px;
  overflow-x: auto;
  scrollbar-width: none;
}

.channel-bar .container::-webkit-scrollbar {
  display: none;
}

.nav-link {
  position: relative;
  flex-shrink: 0;
  padding: 16px 18px 12px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-weak);
  letter-spacing: .5px;
}

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

.nav-link.active {
  color: var(--primary);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 6px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

/* Article Hero */
.article-hero {
  background: linear-gradient(rgba(16, 42, 36, 0.88), rgba(10, 26, 21, 0.94)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  padding: 72px 0 64px;
  min-height: 240px;
  color: #fff;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 28px;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.75);
}

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

.breadcrumb .crumb-cat {
  color: rgba(255, 255, 255, 0.75);
}

.breadcrumb .sep {
  opacity: .5;
}

.breadcrumb .current {
  color: rgba(255, 255, 255, 0.85);
  max-width: 600px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.article-hero h1 {
  font-family: var(--font-serif);
  font-size: 40px;
  line-height: 1.3;
  font-weight: 700;
  max-width: 760px;
  margin-bottom: 24px;
  color: #fff;
  word-break: break-word;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
}

.meta-cat {
  display: inline-flex;
  background: rgba(168, 132, 76, 0.18);
  color: #D4B27F;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
}

.meta-date {
  font-variant-numeric: tabular-nums;
  display: inline-flex;
  align-items: center;
}

.meta-date::before {
  content: "";
  display: inline-block;
  width: 12px;
  height: 1px;
  background: var(--accent);
  vertical-align: middle;
  margin-right: 8px;
}

/* Article Body */
.article-body-wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 64px 0 24px;
}

.article-body {
  font-size: 16px;
  line-height: 1.9;
  color: var(--text);
}

.article-body p {
  margin-bottom: 28px;
}

.article-body h2 {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 600;
  color: var(--primary);
  margin: 48px 0 20px;
  line-height: 1.4;
}

.article-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin: 36px 0 16px;
}

.article-body h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  margin: 28px 0 12px;
}

.article-body a {
  color: var(--accent);
  border-bottom: 1px solid rgba(168, 132, 76, 0.4);
}

.article-body a:hover {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.article-body blockquote {
  margin: 32px 0;
  padding: 16px 20px;
  background: #F0EDE7;
  border-left: 3px solid var(--accent);
  color: var(--text-weak);
  border-radius: 0 8px 8px 0;
}

.article-body blockquote p {
  margin-bottom: 0;
}

.article-body img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 32px 0;
}

.article-body figure {
  margin: 32px 0;
}

.article-body figcaption {
  font-size: 13px;
  color: var(--text-weak);
  text-align: center;
  margin-top: 12px;
}

.article-body ul,
.article-body ol {
  margin: 0 0 28px;
  padding-left: 24px;
}

.article-body li {
  margin-bottom: 8px;
}

.article-body ul li::marker {
  color: var(--accent);
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  font-size: 14px;
}

.article-body th,
.article-body td {
  border: 1px solid var(--line);
  padding: 12px 14px;
  text-align: left;
}

.article-body th {
  background: rgba(20, 52, 43, 0.04);
  font-weight: 500;
  color: var(--primary);
}

.article-body code {
  background: #F0EDE7;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 14px;
}

.article-body pre {
  background: var(--primary-dark);
  color: #D8E0DB;
  padding: 20px;
  border-radius: 8px;
  overflow-x: auto;
  margin: 32px 0;
}

.article-body pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

.article-body hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 40px 0;
}

.article-body iframe {
  max-width: 100%;
  margin: 32px 0;
  aspect-ratio: 16 / 9;
  border-radius: 8px;
  border: none;
}

/* Tags */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 24px 0 16px;
  border-top: 1px solid var(--line);
  margin-top: 40px;
}

.tag-pill {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  background: #F0EDE7;
  color: var(--text-weak);
  border-radius: 999px;
  font-size: 13px;
  transition: background .25s, color .25s;
}

.tag-pill:hover {
  background: rgba(168, 132, 76, 0.12);
  color: var(--accent);
}

a.tag-pill {
  color: var(--text-weak);
}

a.tag-pill:hover {
  color: var(--accent);
}

/* Back */
.article-back {
  padding: 8px 0 40px;
}

.article-back a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-weak);
}

.article-back a:hover {
  color: var(--accent);
}

.article-back .arrow {
  font-size: 16px;
  transition: transform .25s;
}

.article-back a:hover .arrow {
  transform: translateX(-4px);
}

/* Article Empty */
.article-empty {
  max-width: 720px;
  margin: 0 auto;
  padding: 80px 0 96px;
  text-align: center;
}

.article-empty h1 {
  font-family: var(--font-serif);
  font-size: 28px;
  color: var(--primary);
  margin-bottom: 20px;
}

.article-empty .empty-icon {
  width: 56px;
  height: 56px;
  background: rgba(20, 52, 43, 0.05);
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-weak);
  margin-bottom: 20px;
}

.article-empty p {
  color: var(--text-weak);
  margin-bottom: 24px;
}

/* Related */
.related-section {
  background: #fff;
  padding: 80px 0;
  border-top: 1px solid var(--line);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 48px;
}

.related-section h2 {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 600;
  color: var(--primary);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--primary);
  flex-shrink: 0;
}

.text-link .arrow {
  transition: transform .25s;
}

.text-link:hover .arrow {
  transform: translateX(4px);
}

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

.related-card {
  display: block;
  background: var(--bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(20, 52, 43, 0.08);
  transition: transform .4s, box-shadow .4s;
}

.related-card:nth-child(2) {
  margin-top: 24px;
}

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

.related-cover {
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: #E8E4DC;
}

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

.related-card:hover .related-cover img {
  transform: scale(1.03);
}

.related-info {
  padding: 20px 22px 24px;
}

.related-info h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  margin-bottom: 10px;
  transition: color .25s;
}

.related-card:hover .related-info h3 {
  color: var(--accent);
}

.related-info p {
  font-size: 14px;
  color: var(--text-weak);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 14px;
}

.related-date {
  font-size: 13px;
  color: #9AA39E;
  font-variant-numeric: tabular-nums;
}

/* CTA */
.site-cta {
  position: relative;
  background: linear-gradient(rgba(16, 42, 36, 0.92), rgba(10, 26, 21, 0.96)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  color: #fff;
  padding: 88px 0;
  text-align: center;
  overflow: hidden;
}

.cta-ring {
  position: absolute;
  right: -80px;
  top: -120px;
  width: 300px;
  height: 300px;
  border: 1px solid rgba(168, 132, 76, 0.5);
  border-radius: 50%;
  pointer-events: none;
}

.site-cta .cta-inner {
  position: relative;
  z-index: 1;
}

.site-cta h2 {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 600;
  margin-bottom: 16px;
}

.site-cta p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 16px;
  margin-bottom: 32px;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

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

.btn-accent:hover {
  background: var(--accent-light);
  color: #fff;
  transform: translateY(-1px);
}

.btn-large {
  height: 50px;
  padding: 0 32px;
  font-size: 16px;
}

.btn-outline-light {
  border: 1px solid rgba(255, 255, 255, 0.5);
  color: #fff;
  height: 50px;
  padding: 0 32px;
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.cta-note {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 0;
}

/* Footer */
.site-footer {
  background: #0A1A15;
  color: #8A938D;
  padding: 72px 0 32px;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .logo .logo-mark {
  color: #fff;
}

.footer-brand .logo .logo-text {
  color: #fff;
}

.footer-desc {
  margin-top: 16px;
  line-height: 1.7;
  max-width: 320px;
}

.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.footer-social a {
  width: 38px;
  height: 38px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #C6CCC8;
  transition: border-color .25s, color .25s;
}

.footer-social svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.footer-social a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 500;
  margin-bottom: 18px;
}

.footer-col a {
  display: block;
  color: #8A938D;
  padding: 6px 0;
  transition: color .25s;
}

.footer-col a:hover {
  color: var(--accent);
}

.footer-contact li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 6px 0;
  list-style: none;
}

.footer-contact svg {
  width: 15px;
  height: 15px;
  stroke: currentColor;
  flex-shrink: 0;
  margin-top: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
}

/* Back to top */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity .3s, transform .3s, background .3s, visibility .3s;
  z-index: 180;
}

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

.back-to-top:hover {
  background: var(--accent);
}

.back-to-top svg {
  width: 18px;
  height: 18px;
}

/* Responsive */
@media (max-width: 1023px) {
  .container {
    padding: 0 32px;
  }

  .search-box {
    width: 280px;
  }

  .search-box:focus-within {
    width: 320px;
  }

  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .related-card:nth-child(2) {
    margin-top: 0;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 767px) {
  .container {
    padding: 0 20px;
  }

  .brand-bar .container {
    padding-right: 12px;
  }

  .search-box {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(250, 247, 242, 0.98);
    border-radius: 0;
    align-items: center;
    justify-content: center;
    padding: 0 24px;
    z-index: 500;
  }

  .search-box.mobile-open {
    display: flex;
  }

  .search-box input {
    height: 48px;
    background: #fff;
    border-radius: 24px;
    padding: 0 20px;
    border: 1px solid var(--line);
  }

  .search-toggle {
    display: inline-flex;
  }

  .nav-cta {
    display: none;
  }

  .channel-bar .container {
    gap: 0;
    height: 48px;
  }

  .nav-link {
    padding: 14px 12px 10px;
    font-size: 14px;
  }

  .article-hero {
    padding: 48px 0 44px;
    min-height: 0;
  }

  .breadcrumb {
    margin-bottom: 20px;
    font-size: 13px;
  }

  .breadcrumb .current {
    max-width: 100%;
    white-space: normal;
  }

  .article-hero h1 {
    font-size: 30px;
  }

  .article-meta {
    gap: 12px;
  }

  .article-body-wrap {
    padding-top: 40px;
  }

  .article-body {
    font-size: 15px;
  }

  .article-body h2 {
    font-size: 21px;
  }

  .related-section {
    padding: 56px 0;
  }

  .section-head {
    margin-bottom: 32px;
  }

  .related-section h2 {
    font-size: 26px;
  }

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

  .related-card:nth-child(2) {
    margin-top: 0;
  }

  .site-cta {
    padding: 64px 0;
  }

  .site-cta h2 {
    font-size: 28px;
  }

  .cta-actions {
    flex-direction: column;
    align-items: center;
  }

  .btn-large,
  .btn-outline-light {
    width: 100%;
    max-width: 320px;
  }

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

  .footer-bottom {
    flex-direction: column;
  }

  .back-to-top {
    right: 16px;
    bottom: 16px;
  }
}

/* roulang page: category2 */
:root{
  --primary:#14342B;
  --primary-deep:#102A24;
  --primary-dark:#0A1A15;
  --accent:#A8844C;
  --accent-hover:#B8955F;
  --bg:#FAF7F2;
  --card-bg:#FFFFFF;
  --text:#1F2622;
  --muted:#6E7A74;
  --line:rgba(20,52,43,0.12);
  --radius:12px;
  --shadow:0 12px 24px rgba(20,52,43,0.08);
  --font-serif:"Noto Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-sans);background:var(--bg);color:var(--text);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button,input{font:inherit;color:inherit}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 48px}
.container-narrow{max-width:960px;margin:0 auto;padding:0 48px}
.section{padding:96px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:56px}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;color:var(--accent);font-weight:600;margin-bottom:10px}
.section-head .eyebrow::before{content:'';width:12px;height:2px;background:var(--accent)}
.section-head h2{font-family:var(--font-serif);font-size:36px;line-height:1.3;color:var(--primary)}
.section-head p{max-width:440px;color:var(--muted);font-size:15px;line-height:1.8}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 28px;border-radius:6px;font-size:15px;font-weight:500;letter-spacing:.02em;border:1px solid transparent;cursor:pointer;white-space:nowrap;transition:background .25s,box-shadow .25s,transform .25s,border-color .25s}
.btn-dark{background:var(--accent);color:#fff;height:44px;padding:0 26px}
.btn-dark:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 8px 20px rgba(168,132,76,.28)}
.btn-accent{background:var(--accent);color:#fff;height:50px;padding:0 36px}
.btn-accent:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 10px 24px rgba(168,132,76,.32)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.55);height:50px;padding:0 36px}
.btn-outline-light:hover{background:rgba(255,255,255,.08);border-color:#fff}
.btn:focus-visible,.logo:focus-visible,.nav-link:focus-visible,.search-box:focus-within{outline:2px solid var(--accent);outline-offset:2px}

/* Header */
.site-header{position:relative;z-index:50;background:var(--bg)}
.brand-bar{height:64px;border-bottom:1px solid var(--line);transition:transform .35s ease,box-shadow .35s ease}
.brand-bar.hidden{transform:translateY(-100%)}
.brand-bar .container{display:flex;align-items:center;justify-content:space-between;height:100%}
.logo{display:inline-flex;align-items:center;gap:9px;flex-shrink:0}
.logo-mark{width:36px;height:36px;border-radius:8px;background:var(--primary);color:#fff;font-family:var(--font-serif);font-weight:700;font-size:15px;display:flex;align-items:center;justify-content:center;letter-spacing:-.02em}
.logo-text{font-size:17px;font-weight:600;color:var(--primary);letter-spacing:.04em}
.brand-right{display:flex;align-items:center;gap:16px}
.search-box{display:flex;align-items:center;gap:8px;width:400px;max-width:40vw;height:40px;padding:0 16px;border-radius:999px;background:#F0EDE7;border:1px solid transparent;transition:background .2s,border-color .2s,box-shadow .2s}
.search-box:focus-within{background:#fff;border-color:var(--primary);box-shadow:0 0 0 3px rgba(20,52,43,.08)}
.search-icon{display:flex;color:var(--muted);flex-shrink:0}
.search-box input{flex:1;min-width:0;border:none;background:transparent;outline:none;font-size:14px;color:var(--text)}
.search-box input::placeholder{color:#9AA39E}
.search-toggle{display:none;width:40px;height:40px;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:999px;background:#F0EDE7;cursor:pointer;transition:background .2s,border-color .2s}
.search-toggle:hover{border-color:var(--primary)}
.search-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.nav-cta{flex-shrink:0}
.channel-bar{position:sticky;top:0;z-index:40;background:rgba(250,247,242,.92);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.channel-bar .container{display:flex;align-items:stretch;gap:6px;height:56px;overflow-x:auto;scrollbar-width:none}
.channel-bar .container::-webkit-scrollbar{display:none}
.nav-link{position:relative;display:inline-flex;align-items:center;padding:0 20px;color:var(--muted);font-size:15px;font-weight:500;white-space:nowrap;transition:color .2s}
.nav-link:hover{color:var(--primary)}
.nav-link.active{color:var(--primary);font-weight:600}
.nav-link.active::after{content:'';position:absolute;left:20px;right:20px;bottom:0;height:2px;background:var(--accent);border-radius:2px 2px 0 0}

/* Page intro */
.page-intro{padding:72px 0 48px;border-bottom:1px solid var(--line)}
.page-intro .container-narrow{text-align:center}
.breadcrumb{display:flex;align-items:center;justify-content:center;gap:8px;font-size:14px;color:var(--muted)}
.breadcrumb a{color:var(--muted);transition:color .2s}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .bc-sep{color:var(--accent)}
.breadcrumb .current{color:var(--primary);font-weight:500}
.page-intro h1{font-family:var(--font-serif);font-size:38px;line-height:1.3;color:var(--primary);margin-top:28px;margin-bottom:14px}
.intro-lead{max-width:720px;margin:0 auto;font-size:16px;color:var(--muted);line-height:1.85}

/* Cases grid */
.cases-section{padding-top:88px}
.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;align-items:start}
.case-card{background:var(--card-bg);border:1px solid rgba(20,52,43,.08);border-radius:var(--radius);overflow:hidden;box-shadow:0 4px 16px rgba(20,52,43,.04);transition:transform .4s,box-shadow .4s}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.case-card:nth-child(2){margin-top:32px}
.case-media{aspect-ratio:16/9;overflow:hidden;position:relative;display:block}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s}
.case-card:hover .case-media img{transform:scale(1.03)}
.case-body{padding:28px}
.case-topline{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.badge{display:inline-flex;align-items:center;padding:4px 14px;border-radius:999px;background:rgba(168,132,76,.12);color:var(--primary);font-size:13px;font-weight:500}
.case-index{font-family:var(--font-serif);font-size:22px;color:var(--line);letter-spacing:.02em}
.case-body h3{font-size:21px;font-weight:600;color:var(--primary);line-height:1.4;margin-bottom:12px}
.case-desc{font-size:14px;color:var(--muted);line-height:1.8;margin-bottom:20px}
.case-metric{display:flex;align-items:baseline;gap:10px;border-top:1px solid var(--line);padding-top:16px}
.metric-num{font-family:var(--font-serif);font-size:32px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums}
.metric-text{font-size:13px;color:var(--muted)}

/* Stats band */
.stats-band{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--primary-deep),var(--primary-dark));color:#fff;padding:88px 0}
.stats-band::before{content:'';position:absolute;top:-120px;right:-80px;width:300px;height:300px;border:1px solid rgba(168,132,76,.35);border-radius:50%}
.stats-band .container{position:relative;z-index:1}
.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;text-align:center}
.stat-item{display:flex;flex-direction:column;align-items:center;gap:6px}
.stat-num{font-family:var(--font-serif);font-size:48px;font-weight:700;color:#fff;font-variant-numeric:tabular-nums;line-height:1}
.stat-plus{font-family:var(--font-serif);font-size:32px;color:var(--accent);margin-left:4px}
.stat-item .stat-label{font-size:14px;color:rgba(255,255,255,.65);letter-spacing:.04em}
.stat-num-row{display:flex;align-items:baseline}

/* Key points */
.keypoints-section{background:var(--bg)}
.keypoints-head{display:flex;flex-direction:column;align-items:center;text-align:center;margin-bottom:48px}
.keypoints-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;color:var(--accent);font-weight:600;margin-bottom:10px}
.keypoints-head .eyebrow::before{content:'';width:12px;height:2px;background:var(--accent)}
.keypoints-head h2{font-family:var(--font-serif);font-size:32px;color:var(--primary);line-height:1.3}
.keypoints-head p{color:var(--muted);font-size:15px;margin-top:10px}
.keypoints-list{display:grid;grid-template-columns:1fr 1fr;gap:4px 56px;max-width:960px;margin:0 auto}
.keypoint-item{display:flex;align-items:flex-start;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);font-size:15px;font-weight:500;color:var(--primary)}
.keypoint-item svg{width:20px;height:20px;flex-shrink:0;color:var(--accent);margin-top:4px}

/* Process */
.process-section{background:#F3EFE8}
.process-head{display:flex;flex-direction:column;align-items:center;text-align:center;margin-bottom:48px}
.process-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;color:var(--accent);font-weight:600;margin-bottom:10px}
.process-head .eyebrow::before{content:'';width:12px;height:2px;background:var(--accent)}
.process-head h2{font-family:var(--font-serif);font-size:32px;color:var(--primary);line-height:1.3}
.process-head p{color:var(--muted);font-size:15px;margin-top:10px}
.process-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:40px 32px;margin-top:24px}
.step{position:relative;padding-top:24px}
.step::before{content:'';position:absolute;top:0;left:0;width:100%;height:1px;background:rgba(20,52,43,.16)}
.step:nth-child(even){margin-top:32px}
.step-num{font-family:var(--font-serif);font-size:42px;font-weight:700;color:var(--accent);line-height:1;font-variant-numeric:tabular-nums}
.step h3{font-size:18px;font-weight:600;color:var(--primary);margin-top:18px;margin-bottom:8px}
.step p{font-size:14px;color:var(--muted);line-height:1.8}

/* FAQ */
.faq-section .container-narrow{max-width:820px}
.faq-head{text-align:center;margin-bottom:24px}
.faq-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;color:var(--accent);font-weight:600;margin-bottom:10px}
.faq-head .eyebrow::before{content:'';width:12px;height:2px;background:var(--accent)}
.faq-head h2{font-family:var(--font-serif);font-size:32px;color:var(--primary);line-height:1.3}
.faq-head p{color:var(--muted);font-size:15px;margin-top:10px}
.faq-list{max-width:800px;margin:32px auto 0}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;background:transparent;border:none;cursor:pointer;text-align:left;padding:22px 0;font-size:16px;font-weight:500;color:var(--primary);line-height:1.5}
.faq-q:hover{color:var(--accent)}
.faq-icon{position:relative;width:14px;height:14px;flex-shrink:0;transition:transform .3s}
.faq-icon::before,.faq-icon::after{content:'';position:absolute;background:var(--accent);border-radius:2px;transition:opacity .3s}
.faq-icon::before{left:0;top:6px;width:14px;height:2px}
.faq-icon::after{left:6px;top:0;width:2px;height:14px}
.faq-item.active .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease}
.faq-item.active .faq-a{max-height:320px}
.faq-a p{padding-bottom:24px;font-size:15px;color:var(--muted);line-height:1.85}

/* CTA */
.cta-section{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--primary-deep),var(--primary-dark));padding:96px 0;text-align:center}
.cta-section::before{content:'';position:absolute;top:-140px;right:-80px;width:320px;height:320px;border:1px solid rgba(168,132,76,.35);border-radius:50%}
.cta-inner{max-width:680px;margin:0 auto;position:relative;z-index:1}
.cta-inner h2{font-family:var(--font-serif);font-size:38px;color:#fff;line-height:1.3;margin-bottom:16px}
.cta-inner p{color:rgba(255,255,255,.7);font-size:16px;line-height:1.8;margin-bottom:32px}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.cta-note{font-size:13px;color:rgba(255,255,255,.5);margin-top:20px}

/* Footer */
.site-footer{background:var(--primary-dark);color:rgba(255,255,255,.72);padding:72px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:48px;margin-bottom:40px}
.footer-brand .logo{color:#fff}
.footer-brand .logo-mark{background:rgba(255,255,255,.08);color:#fff}
.footer-brand .logo-text{color:#fff}
.footer-desc{font-size:14px;line-height:1.9;color:rgba(255,255,255,.5);max-width:280px;margin-top:18px}
.footer-social{display:flex;gap:10px;margin-top:22px}
.footer-social a{width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.14);border-radius:50%;color:rgba(255,255,255,.75);transition:color .2s,border-color .2s,background .2s}
.footer-social a:hover{color:#fff;border-color:var(--accent);background:var(--accent)}
.footer-social a i{font-size:15px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;letter-spacing:.02em}
.footer-col a{display:block;color:rgba(255,255,255,.52);font-size:14px;padding:5px 0;transition:color .2s}
.footer-col a:hover{color:var(--accent)}
.footer-col p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.52);margin:6px 0}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:24px;display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:#8A938D}
.footer-bottom a{color:#8A938D;transition:color .2s}
.footer-bottom a:hover{color:var(--accent)}

/* Back to top */
.back-top{position:fixed;right:28px;bottom:28px;width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;border:none;cursor:pointer;opacity:0;pointer-events:none;transition:opacity .3s,background .3s,transform .3s;z-index:60;box-shadow:0 8px 20px rgba(20,52,43,.24)}
.back-top.show{opacity:1;pointer-events:auto}
.back-top:hover{background:var(--accent);transform:translateY(-3px)}
.back-top:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.back-top svg{width:18px;height:18px}

/* Responsive */
@media (max-width:1023px){
  .container{padding:0 32px}
  .section{padding:72px 0}
  .cases-grid{grid-template-columns:1fr 1fr}
  .case-card:nth-child(2){margin-top:0}
  .process-steps{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .search-box{width:320px}
}
@media (max-width:767px){
  .container{padding:0 24px}
  .section{padding:56px 0}
  .brand-bar .container{padding:0 20px}
  .search-box{display:none}
  .search-toggle{display:inline-flex}
  .search-box.is-open{display:flex;position:fixed;left:0;right:0;top:0;width:100%;max-width:100%;height:60px;border-radius:0;border-bottom:1px solid var(--line);box-shadow:0 8px 24px rgba(0,0,0,.08);z-index:80;background:#fff;align-items:center;padding:0 24px}
  .nav-cta{padding:0 16px;font-size:14px;height:40px}
  .channel-bar .container{height:52px}
  .nav-link{padding:0 16px}
  .page-intro{padding:56px 0 36px}
  .page-intro h1{font-size:30px}
  .page-intro .container-narrow,.container-narrow{padding:0 24px}
  .cases-grid{grid-template-columns:1fr;gap:24px}
  .case-card:nth-child(2){margin-top:0}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:32px}
  .section-head h2{font-size:26px}
  .keypoints-list{grid-template-columns:1fr}
  .process-steps{grid-template-columns:1fr}
  .step:nth-child(even){margin-top:0}
  .stats-band{padding:56px 0}
  .stat-num{font-size:36px}
  .footer-grid{grid-template-columns:1fr}
  .cta-section{padding:56px 0}
  .cta-inner h2{font-size:28px}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .footer-bottom{flex-direction:column;text-align:center}
  .back-top{right:16px;bottom:16px}
}
@media (max-width:520px){
  .container{padding:0 20px}
  .brand-right{gap:10px}
  .nav-cta{display:inline-flex;padding:0 14px;font-size:13px}
  .search-toggle{width:38px;height:38px}
  .logo-text{font-size:15px}
  .logo-mark{width:32px;height:32px;font-size:13px}
  .page-intro h1{font-size:28px}
  .hero-title,.section-head h2{font-size:24px}
  .case-body{padding:20px}
  .case-body h3{font-size:18px}
  .process-steps{gap:24px}
}

/* roulang page: category3 */
:root {
  --primary: #14342B;
  --primary-dark: #102A24;
  --primary-deep: #0A1A15;
  --accent: #A8844C;
  --accent-light: rgba(168, 132, 76, 0.12);
  --bg: #FAF7F2;
  --card-bg: #FFFFFF;
  --text: #1F2622;
  --text-muted: #6E7A74;
  --border: rgba(20, 52, 43, 0.12);
  --radius: 12px;
  --radius-sm: 6px;
  --shadow: 0 12px 24px rgba(20, 52, 43, 0.08);
  --font-serif: 'Noto Serif SC', serif;
  --font-sans: 'Noto Sans SC', sans-serif;
  --container: 1200px;
  --space: 96px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

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

button,
input {
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
  outline: none;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 48px;
}

/* ===== Header ===== */
.site-header {
  background: var(--bg);
}

.brand-bar {
  border-bottom: 1px solid var(--border);
  transition: transform 0.4s ease, opacity 0.3s ease;
}

.brand-bar.hide {
  transform: translateY(-100%);
  opacity: 0;
}

.brand-bar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 24px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-mark {
  width: 40px;
  height: 40px;
  background: var(--primary);
  color: #fff;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
}

.logo-text {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 20px;
  color: var(--primary);
  letter-spacing: 0.02em;
}

.brand-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #F0EDE7;
  border-radius: 999px;
  height: 40px;
  padding: 0 20px;
  width: 400px;
  transition: background 0.3s, box-shadow 0.3s, border-color 0.3s;
  border: 1px solid transparent;
}

.search-box:focus-within {
  background: #fff;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(20, 52, 43, 0.08);
}

.search-icon {
  display: flex;
  color: var(--text-muted);
}

.search-box input {
  width: 100%;
  height: 100%;
  background: transparent;
  font-size: 14px;
  color: var(--text);
}

.search-box input::placeholder {
  color: #A3ACA7;
}

.search-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #F0EDE7;
  color: var(--primary);
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.btn-dark {
  background: var(--primary);
  color: #fff;
  height: 44px;
  padding: 0 28px;
  font-size: 15px;
}

.btn-dark:hover {
  background: #1B4438;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(20, 52, 43, 0.18);
}

.btn-accent {
  background: var(--accent);
  color: #fff;
  height: 50px;
  padding: 0 34px;
  font-size: 16px;
}

.btn-accent:hover {
  background: #BC9558;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(168, 132, 76, 0.25);
}

.btn-outline-light {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.5);
  height: 48px;
  padding: 0 28px;
  font-size: 15px;
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.08);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
  height: 48px;
  padding: 0 28px;
  font-size: 15px;
}

.btn-outline:hover {
  background: rgba(20, 52, 43, 0.04);
}

.nav-cta {
  height: 40px;
  padding: 0 20px;
  font-size: 14px;
}

.channel-bar {
  border-bottom: 1px solid var(--border);
  background: rgba(250, 247, 242, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.channel-bar .container {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 52px;
  overflow-x: auto;
  scrollbar-width: none;
}

.channel-bar .container::-webkit-scrollbar {
  display: none;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0 18px;
  height: 52px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: 999px;
  transition: color 0.25s;
  flex-shrink: 0;
}

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

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

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 18px;
  right: 18px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

/* ===== 页面临时搜索层 ===== */
.mobile-search-layer {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10, 26, 21, 0.96);
  z-index: 999;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.mobile-search-layer.open {
  display: flex;
}

.mobile-search-layer .search-box {
  width: 100%;
  max-width: 480px;
  background: #fff;
}

.mobile-search-layer .search-close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 22px;
}

/* ===== 面包屑 + 页面 Hero ===== */
.page-hero {
  padding: 72px 0 48px;
  background: var(--bg);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.breadcrumb a {
  color: var(--text-muted);
  transition: color 0.2s;
}

.breadcrumb a:hover {
  color: var(--primary);
}

.breadcrumb .sep {
  color: #C4CEC8;
}

.page-hero h1 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 36px;
  line-height: 1.3;
  color: var(--primary);
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.page-hero .lead {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 760px;
}

/* ===== 板块通用 ===== */
.section {
  padding: 96px 0;
}

.section-head {
  margin-bottom: 56px;
  max-width: 720px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  background: var(--accent-light);
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
}

.section-head h2 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 34px;
  line-height: 1.3;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-head p {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ===== 方案卡片 ===== */
.solutions-section {
  background: var(--bg);
  padding-bottom: 96px;
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  align-items: start;
}

.solution-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  display: flex;
  flex-direction: column;
}

.solution-card:nth-child(2) {
  margin-top: 32px;
}

.solution-card:nth-child(3) {
  margin-top: 8px;
}

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

.card-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--primary-dark);
}

.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.card-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(10, 26, 21, 0.35));
  pointer-events: none;
}

.card-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--primary);
  font-size: 12px;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 999px;
  z-index: 2;
  backdrop-filter: blur(4px);
}

.card-body {
  padding: 28px 28px 32px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-body h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 22px;
  line-height: 1.4;
  color: var(--primary);
  margin-bottom: 12px;
}

.card-body p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.8;
  flex: 1;
}

.card-data {
  margin-top: 20px;
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.data-num {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 28px;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.data-label {
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== 核心要点 ===== */
.highlights-section {
  background: var(--primary-dark);
  padding: 96px 0;
  position: relative;
  overflow: hidden;
}

.highlights-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, transparent 60%, rgba(255, 255, 255, 0.03));
  pointer-events: none;
}

.highlights-section .section-head h2 {
  color: #fff;
}

.highlights-section .section-head p {
  color: rgba(255, 255, 255, 0.65);
}

.highlights-section .section-tag {
  color: #D8BC8E;
  background: rgba(168, 132, 76, 0.18);
}

.highlights-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.highlight-item {
  display: flex;
  gap: 16px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  transition: background 0.3s, border-color 0.3s;
}

.highlight-item:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(168, 132, 76, 0.4);
}

.highlight-check {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(168, 132, 76, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.highlight-check svg {
  width: 14px;
  height: 14px;
  color: var(--accent);
}

.highlight-item h3 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
  line-height: 1.5;
}

.highlight-item p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  line-height: 1.7;
}

/* ===== 适用场景 ===== */
.scenarios-section {
  background: var(--bg);
  padding: 96px 0;
}

.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.scenario-cell {
  background: var(--card-bg);
  padding: 32px 32px 36px;
  transition: background 0.3s;
}

.scenario-cell:hover {
  background: #FCFAF6;
}

.scenario-index {
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 12px;
  display: block;
  font-variant-numeric: tabular-nums;
}

.scenario-cell h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 10px;
  line-height: 1.4;
}

.scenario-cell p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ===== 流程 ===== */
.process-section {
  background: var(--card-bg);
  padding: 96px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.process-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  counter-reset: process;
}

.process-item {
  position: relative;
  padding-top: 8px;
}

.process-num {
  font-family: var(--font-serif);
  font-size: 40px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
  margin-bottom: 16px;
  display: block;
  font-variant-numeric: tabular-nums;
}

.process-item h3 {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--primary);
  margin-bottom: 8px;
}

.process-item p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

.process-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 24px;
  height: 1px;
  background: var(--accent);
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--bg);
  padding: 96px 0;
}

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

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

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

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0;
  cursor: pointer;
  font-size: 17px;
  font-weight: 500;
  color: var(--text);
  transition: color 0.2s;
}

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

.faq-icon {
  position: relative;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  background: var(--accent);
  border-radius: 1px;
  transition: transform 0.3s ease;
}

.faq-icon::before {
  width: 20px;
  height: 2px;
  top: 9px;
  left: 0;
}

.faq-icon::after {
  width: 2px;
  height: 20px;
  top: 0;
  left: 9px;
}

.faq-item.open .faq-icon::after {
  transform: scaleY(0);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.8;
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding-bottom: 24px;
}

/* ===== CTA ===== */
.cta-section {
  background: var(--primary-dark);
  padding: 96px 0;
  position: relative;
  overflow: hidden;
  text-align: center;
}

.cta-section::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 420px;
  height: 420px;
  border: 1px solid rgba(168, 132, 76, 0.35);
  border-radius: 50%;
  pointer-events: none;
}

.cta-section::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 620px;
  height: 620px;
  border: 1px solid rgba(168, 132, 76, 0.15);
  border-radius: 50%;
  pointer-events: none;
}

.cta-inner {
  position: relative;
  z-index: 2;
}

.cta-section h2 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 36px;
  color: #fff;
  margin-bottom: 12px;
}

.cta-section .cta-lead {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 36px;
}

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

.cta-note {
  margin-top: 20px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-deep);
  color: rgba(255, 255, 255, 0.7);
  padding: 72px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 48px;
  margin-bottom: 56px;
}

.footer-brand .logo .logo-mark {
  background: rgba(255, 255, 255, 0.12);
}

.footer-brand .logo .logo-text {
  color: #fff;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.55);
  margin: 16px 0 20px;
  max-width: 280px;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.6);
  transition: all 0.25s;
}

.footer-social a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.footer-social svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.footer-col ul {
  list-style: none;
}

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

.footer-col ul a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  transition: color 0.2s;
}

.footer-col ul a:hover {
  color: var(--accent);
}

.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 12px;
}

.footer-contact svg {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  text-align: center;
  font-size: 14px;
  color: #8A938D;
}

/* ===== 回到顶部 ===== */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: all 0.35s ease;
  box-shadow: 0 8px 20px rgba(20, 52, 43, 0.25);
  z-index: 98;
}

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

.back-to-top:hover {
  background: var(--accent);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
}

/* ===== 响应式 ===== */
@media (max-width: 1023px) {
  .container {
    padding: 0 32px;
  }

  .search-box {
    width: 280px;
  }

  .solutions-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .solutions-grid .solution-card:nth-child(3) {
    grid-column: 1 / -1;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    width: 100%;
  }

  .process-list {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 767px) {
  .container {
    padding: 0 24px;
  }

  .brand-bar .container {
    min-height: 60px;
  }

  .search-box {
    display: none;
  }

  .search-toggle {
    display: flex;
  }

  .nav-cta {
    display: none;
  }

  .channel-bar .container {
    height: 48px;
  }

  .nav-link {
    height: 48px;
    font-size: 14px;
    padding: 0 14px;
  }

  .page-hero {
    padding: 48px 0 32px;
  }

  .page-hero h1 {
    font-size: 28px;
  }

  .section,
  .solutions-section,
  .highlights-section,
  .scenarios-section,
  .process-section,
  .faq-section,
  .cta-section {
    padding: 56px 0;
  }

  .section-head {
    margin-bottom: 32px;
  }

  .section-head h2 {
    font-size: 24px;
  }

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

  .solutions-grid .solution-card:nth-child(2) {
    margin-top: 0;
  }

  .solutions-grid .solution-card:nth-child(3) {
    grid-column: auto;
    max-width: 100%;
  }

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

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

  .scenario-cell {
    padding: 24px;
  }

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

  .process-num {
    font-size: 34px;
  }

  .faq-question {
    font-size: 16px;
  }

  .cta-section h2 {
    font-size: 26px;
  }

  .cta-buttons .btn {
    width: 100%;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
    margin-bottom: 40px;
  }

  .back-to-top {
    right: 16px;
    bottom: 20px;
  }
}

@media (min-width: 520px) and (max-width: 767px) {
  .solutions-grid {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .container {
    padding: 0 32px;
  }
}