/* roulang page: index */
:root {
  --primary: #C6A664;
  --primary-dark: #A8873F;
  --accent: #1E3D2B;
  --bg-warm: #F7F5F1;
  --bg-dark: #1C1C1C;
  --card-bg: #FFFFFF;
  --card-warm: #FCFAF6;
  --text-main: #2A2A2A;
  --text-secondary: #6B6B6B;
  --text-muted: #8C8C8C;
  --border: #E5E0D8;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-hover: 0 8px 24px rgba(28, 28, 28, 0.08);
  --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', serif;
  --font-sans: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --transition: 0.3s cubic-bezier(0.22, 0.61, 0.36, 1);
}

*,
*::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: 1.6;
  color: var(--text-main);
  background: var(--bg-warm);
  -webkit-font-smoothing: antialiased;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition);
}

ul,
ol {
  list-style: none;
}

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

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

.section-header {
  margin-bottom: 56px;
}

.section-header .eyebrow {
  display: inline-block;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.4em;
  color: var(--primary);
  margin-bottom: 12px;
  text-transform: uppercase;
}

.section-header h2 {
  font-family: var(--font-serif);
  font-size: 38px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.3;
}

.section-header p {
  margin-top: 12px;
  color: var(--text-secondary);
  font-size: 15px;
  max-width: 600px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 32px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--primary);
  color: var(--text-main);
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.btn-primary .arrow {
  transition: transform var(--transition);
}

.btn-primary:hover .arrow {
  transform: translateX(4px);
}

.btn-outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.6);
  color: #fff;
}

.btn-outline:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-2px);
}

.btn-submit {
  width: 100%;
  background: var(--primary);
  color: var(--text-main);
  height: 48px;
}

.btn-submit:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 64px;
  transition: background var(--transition), box-shadow var(--transition), border-color var(--transition);
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  background: var(--bg-warm);
  border-color: rgba(0, 0, 0, 0.08);
  box-shadow: 0 2px 12px rgba(28, 28, 28, 0.04);
}

.header-inner {
  height: 64px;
  display: flex;
  align-items: center;
}

.header-left {
  width: 55%;
  display: flex;
  align-items: center;
  gap: 36px;
}

.header-right {
  width: 45%;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-text {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.02em;
}

.logo-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--text-muted);
}

.logo-domain {
  font-size: 12px;
  color: var(--text-muted);
}

.site-header:not(.scrolled) .logo-domain {
  color: rgba(255, 255, 255, 0.5);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

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

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

.site-header:not(.scrolled) .nav-link {
  color: rgba(255, 255, 255, 0.9);
}

.site-header:not(.scrolled) .nav-link.active {
  color: var(--primary);
}

.header-search {
  position: relative;
}

.search-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition);
}

.search-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
}

.site-header.scrolled .search-toggle:hover {
  background: rgba(0, 0, 0, 0.05);
}

.search-toggle svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
}

.site-header:not(.scrolled) .search-toggle {
  color: rgba(255, 255, 255, 0.9);
}

.site-header.scrolled .search-toggle {
  color: var(--text-main);
}

.header-search input {
  position: absolute;
  right: 0;
  top: 100%;
  width: 0;
  height: 44px;
  padding: 0;
  border: none;
  border-bottom: 1px solid var(--primary);
  background: var(--bg-warm);
  font-size: 14px;
  color: var(--text-main);
  opacity: 0;
  transition: width var(--transition), opacity var(--transition), padding var(--transition);
  border-radius: 0;
}

.header-search.open input {
  width: 220px;
  padding: 0 12px;
  opacity: 1;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 24px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  background: var(--primary);
  color: var(--text-main);
  transition: all var(--transition);
}

.header-cta:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-1px);
}

.header-cta.secondary {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.5);
  color: #fff;
}

.header-cta.secondary:hover {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.site-header.scrolled .header-cta.secondary {
  border-color: var(--text-main);
  color: var(--text-main);
}

.site-header.scrolled .header-cta.secondary:hover {
  border-color: var(--accent);
  color: #fff;
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-main);
  transition: all var(--transition);
}

.site-header:not(.scrolled) .menu-toggle span {
  background: #fff;
}

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

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

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

.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-warm);
  z-index: 999;
  padding: 80px 40px 40px;
  flex-direction: column;
  gap: 24px;
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.mobile-menu.open {
  transform: translateX(0);
}

.mobile-menu .nav-link {
  font-family: var(--font-serif);
  font-size: 24px;
  color: var(--text-main);
  padding: 8px 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.mobile-menu .btn {
  margin-top: 16px;
}

/* ===== Hero ===== */
.hero {
  background: var(--bg-dark);
  min-height: 90vh;
  display: flex;
}

.hero-inner {
  display: flex;
  width: 100%;
  min-height: 90vh;
}

.hero-content {
  width: 45%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 80px 48px 60px;
  position: relative;
  border-right: 1px solid var(--primary);
}

.hero-eyebrow {
  font-family: var(--font-serif);
  font-size: 14px;
  letter-spacing: 0.4em;
  color: var(--primary);
  margin-bottom: 20px;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 52px;
  font-weight: 600;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
  max-width: 380px;
  margin-bottom: 36px;
}

.hero-ctas {
  display: flex;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.hero-badges {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.hero-badges span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
}

.hero-badges svg {
  width: 14px;
  height: 14px;
  fill: var(--primary);
}

.hero-visual {
  width: 55%;
  position: relative;
  overflow: hidden;
}

.hero-bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(135deg, rgba(28, 28, 28, 0.35) 0%, rgba(28, 28, 28, 0.1) 100%);
}

.hero-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: rgba(255, 255, 255, 0.02);
}

.floating-card {
  position: absolute;
  right: 48px;
  bottom: 80px;
  z-index: 2;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid var(--primary);
  border-radius: var(--radius-md);
  padding: 20px 28px;
  box-shadow: var(--shadow-hover);
  min-width: 180px;
}

.floating-card .fc-label {
  font-size: 13px;
  color: var(--text-secondary);
}

.floating-card .fc-value {
  font-family: var(--font-serif);
  font-size: 32px;
  color: var(--primary);
  font-weight: 600;
  margin-top: 4px;
}

/* ===== Stats ===== */
.stats-section {
  background: var(--bg-warm);
  border-top: 1px solid var(--border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.stat-item {
  padding: 40px 32px;
  border-right: 0.5px solid var(--border);
  text-align: center;
}

.stat-item:last-child {
  border-right: none;
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.stat-number {
  font-family: var(--font-serif);
  font-size: 56px;
  font-weight: 600;
  color: var(--primary);
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.stat-number .suffix {
  font-size: 24px;
}

.stat-desc {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ===== Services ===== */
.services-section {
  background: var(--bg-warm);
}

.services-list {
  border-top: 0.5px solid var(--border);
}

.service-row {
  display: flex;
  align-items: center;
  gap: 40px;
  padding: 48px 24px;
  border-bottom: 0.5px solid var(--border);
  transition: background var(--transition);
  position: relative;
}

.service-row:hover {
  background: var(--card-warm);
}

.service-index {
  font-family: var(--font-serif);
  font-size: 44px;
  font-weight: 600;
  color: var(--primary);
  width: 72px;
  flex-shrink: 0;
  line-height: 1;
}

.service-info {
  flex: 1;
}

.service-name {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 6px;
}

.service-desc {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.6;
}

.service-link {
  opacity: 0;
  transform: translateX(-8px);
  transition: all var(--transition);
  font-size: 14px;
  color: var(--primary-dark);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.service-row:hover .service-link {
  opacity: 1;
  transform: translateX(0);
}

.service-link .arrow {
  transition: transform var(--transition);
}

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

/* ===== Compare ===== */
.compare-section {
  background: var(--bg-warm);
}

.compare-wrapper {
  display: flex;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.compare-col {
  flex: 1;
  padding: 56px 48px;
}

.compare-col.divider {
  border-right: 1px solid var(--primary);
}

.compare-col.left {
  background: var(--card-warm);
}

.compare-col.right {
  background: var(--accent);
}

.compare-title {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 600;
  margin-bottom: 8px;
}

.compare-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.compare-col.right .compare-title {
  color: #fff;
}

.compare-col.right .compare-subtitle {
  color: rgba(255, 255, 255, 0.6);
}

.compare-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.compare-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 0.5px dashed rgba(0, 0, 0, 0.1);
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-main);
}

.compare-item:last-child {
  border-bottom: none;
}

.compare-item .icon {
  font-size: 16px;
  font-weight: 700;
  flex-shrink: 0;
  width: 20px;
  text-align: center;
  line-height: 1.6;
}

.compare-item .icon.x {
  color: #B0A89C;
}

.compare-item .icon.check {
  color: var(--primary);
}

.compare-col.right .compare-item {
  color: rgba(255, 255, 255, 0.9);
  border-bottom-color: rgba(255, 255, 255, 0.1);
}

.compare-banner {
  margin-top: 40px;
  background: var(--primary);
  border-radius: var(--radius-md);
  padding: 24px 40px;
  text-align: center;
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--text-main);
  font-weight: 600;
  letter-spacing: 0.02em;
  box-shadow: 0 4px 16px rgba(198, 166, 100, 0.2);
}

/* ===== News ===== */
.news-section {
  background: var(--bg-warm);
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.news-card {
  display: flex;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}

.news-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.news-thumb {
  width: 220px;
  flex-shrink: 0;
  overflow: hidden;
}

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

.news-card:hover .news-thumb img {
  transform: scale(1.03);
}

.news-info {
  padding: 24px 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.news-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--primary-dark);
  border: 1px solid var(--primary);
  border-radius: 999px;
  padding: 2px 12px;
  margin-bottom: 12px;
  align-self: flex-start;
}

.news-title {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.4;
  margin-bottom: 8px;
  transition: color var(--transition);
}

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

.news-excerpt {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-muted);
}

.news-meta a {
  color: var(--primary-dark);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition);
}

.news-meta a:hover {
  gap: 8px;
}

.news-empty {
  text-align: center;
  padding: 80px 24px;
  color: var(--text-muted);
}

.news-empty svg {
  width: 48px;
  height: 48px;
  stroke: var(--text-muted);
  margin: 0 auto 16px;
  display: block;
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--bg-warm);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
}

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

.faq-question {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 28px 0;
  cursor: pointer;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--text-main);
  transition: color var(--transition);
}

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

.faq-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  position: relative;
  transition: transform var(--transition);
}

.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--primary);
  transition: all var(--transition);
}

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

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

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

.faq-answer {
  display: none;
  padding: 0 0 28px 38px;
  border-left: 2px solid var(--primary);
  margin-left: 0;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
}

.faq-item.active .faq-answer {
  display: block;
}

/* ===== CTA / Form ===== */
.cta-section {
  background: var(--bg-warm);
  border-top: 1px solid var(--border);
}

.cta-wrapper {
  display: flex;
  gap: 80px;
  align-items: flex-start;
}

.cta-left {
  flex: 1;
}

.cta-left h2 {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 16px;
  line-height: 1.3;
}

.cta-left p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
}

.cta-contact {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 2;
}

.cta-contact strong {
  color: var(--text-main);
  font-weight: 500;
}

.cta-right {
  width: 440px;
  flex-shrink: 0;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px;
}

.form-group {
  position: relative;
  margin-bottom: 28px;
}

.form-group label {
  position: absolute;
  left: 0;
  top: 12px;
  font-size: 14px;
  color: var(--text-muted);
  pointer-events: none;
  transition: all var(--transition);
}

.form-group input,
.form-group textarea {
  width: 100%;
  height: 44px;
  border-bottom: 1px solid var(--border);
  background: transparent;
  font-size: 15px;
  color: var(--text-main);
  padding: 20px 0 4px;
  transition: border-color var(--transition);
  resize: none;
}

.form-group textarea {
  height: 80px;
}

.form-group input:focus,
.form-group textarea:focus {
  border-bottom-color: var(--primary);
}

.form-group input:focus ~ label,
.form-group input:not(:placeholder-shown) ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:not(:placeholder-shown) ~ label {
  top: -12px;
  font-size: 12px;
  color: var(--primary);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: transparent;
}

.form-privacy {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 16px;
  text-align: center;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-dark);
  border-top: 1px solid var(--primary);
  color: #B0B0B0;
}

.footer-top {
  padding: 56px 0 32px;
  border-bottom: 0.5px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-logo .logo-text {
  font-size: 26px;
}

.footer-logo .logo-domain {
  color: rgba(255, 255, 255, 0.4);
}

.footer-desc {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  max-width: 400px;
}

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

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

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

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

.footer-middle {
  padding: 40px 0;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
}

.footer-col h4 {
  font-family: var(--font-serif);
  font-size: 16px;
  color: #fff;
  margin-bottom: 16px;
  font-weight: 600;
}

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

.footer-col ul a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--transition);
}

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

.footer-col.contact li {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  line-height: 2;
}

.footer-bottom {
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.3);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.3);
}

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

/* ===== Reveal animation ===== */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s cubic-bezier(0.22, 0.61, 0.36, 1), transform 0.6s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ===== Responsive ===== */
@media (max-width: 1023px) {
  .nav-links,
  .header-cta.secondary {
    display: none;
  }
  .menu-toggle {
    display: flex;
  }
  .mobile-menu {
    display: flex;
  }
  .header-left {
    width: auto;
    flex: 1;
  }
  .header-right {
    width: auto;
  }
  .hero-title {
    font-size: 40px;
  }
  .hero-subtitle {
    font-size: 15px;
  }
  .hero-visual {
    width: 50%;
  }
  .hero-content {
    width: 50%;
    padding: 80px 32px 40px;
  }
  .cta-wrapper {
    flex-direction: column;
    gap: 48px;
  }
  .cta-right {
    width: 100%;
  }
  .footer-middle {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 767px) {
  .section {
    padding: 48px 0;
  }
  .section-header {
    margin-bottom: 32px;
  }
  .section-header h2 {
    font-size: 30px;
  }
  .hero {
    min-height: 100vh;
  }
  .hero-inner {
    flex-direction: column;
    min-height: 100vh;
  }
  .hero-content {
    width: 100%;
    padding: 96px 20px 40px;
    border-right: none;
    border-bottom: 1px solid var(--primary);
    justify-content: flex-start;
  }
  .hero-title {
    font-size: 36px;
  }
  .hero-subtitle {
    max-width: 100%;
  }
  .hero-visual {
    width: 100%;
    height: 50vh;
    min-height: 320px;
    order: -1;
  }
  .hero-content {
    order: 1;
  }
  .floating-card {
    right: 20px;
    bottom: 20px;
    padding: 14px 20px;
    min-width: 140px;
  }
  .floating-card .fc-value {
    font-size: 24px;
  }
  .hero-badges {
    gap: 16px;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat-item {
    padding: 24px 16px;
    border-bottom: 0.5px solid var(--border);
  }
  .stat-item:nth-child(2) {
    border-right: none;
  }
  .stat-item:nth-child(3),
  .stat-item:nth-child(4) {
    border-bottom: none;
  }
  .stat-number {
    font-size: 40px;
  }
  .services-list {
    border-top: none;
  }
  .service-row {
    flex-wrap: wrap;
    gap: 16px;
    padding: 32px 16px;
  }
  .service-index {
    width: 48px;
    font-size: 36px;
  }
  .service-name {
    font-size: 20px;
  }
  .service-desc {
    font-size: 14px;
  }
  .service-link {
    opacity: 1;
    transform: none;
    margin-left: 64px;
  }
  .compare-wrapper {
    flex-direction: column;
  }
  .compare-col {
    padding: 32px 20px;
  }
  .compare-col.divider {
    border-right: none;
    border-bottom: 1px solid var(--primary);
  }
  .compare-banner {
    font-size: 18px;
    padding: 20px 24px;
  }
  .news-card {
    flex-direction: column;
  }
  .news-thumb {
    width: 100%;
    height: 160px;
  }
  .news-info {
    padding: 20px;
  }
  .news-title {
    font-size: 18px;
  }
  .cta-wrapper {
    gap: 32px;
  }
  .cta-right {
    padding: 24px;
  }
  .footer-top {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-middle {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .header-search.open input {
    width: 160px;
  }
  .hero-ctas {
    flex-direction: column;
    width: 100%;
  }
  .hero-ctas .btn {
    width: 100%;
  }
}

/* roulang page: article */
:root {
  --primary: #C6A664;
  --primary-dark: #A8873F;
  --green-dark: #1E3D2B;
  --bg-warm: #F7F5F1;
  --bg-dark: #1C1C1C;
  --card-bg: #FFFFFF;
  --card-warm: #FCFAF6;
  --text-main: #2A2A2A;
  --text-secondary: #6B6B6B;
  --text-muted: #8C8C8C;
  --border: #E5E0D8;
  --border-gold: #C6A664;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 8px 24px rgba(28, 28, 28, 0.08);
  --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', 'SimSun', serif;
  --font-sans: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --container-w: 1280px;
  --spacer: 96px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-main);
  background: var(--bg-warm);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease, background 0.25s ease, border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

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

ul,
ol {
  list-style: none;
}

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 28px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.22, 0.61, 0.36, 1);
  white-space: nowrap;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--primary);
  color: #1C1C1C;
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(198, 166, 100, 0.3);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: none;
}

.btn-outline {
  background: transparent;
  border-color: rgba(44, 44, 44, 0.5);
  color: #2A2A2A;
}

.btn-outline:hover {
  background: var(--green-dark);
  border-color: var(--green-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

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

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
  color: #fff;
  transform: translateY(-2px);
}

.btn-sm {
  height: 38px;
  padding: 0 20px;
  font-size: 14px;
  border-radius: 6px;
}

.btn-block {
  width: 100%;
}

/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 64px;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

.site-header.header-scrolled {
  background: rgba(247, 245, 241, 0.97);
  border-bottom-color: var(--border);
  box-shadow: 0 1px 12px rgba(28, 28, 28, 0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 40px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-serif);
}

.logo-text {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.06em;
}

.logo-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  display: inline-block;
  margin: 0 2px;
}

.logo-domain {
  font-size: 12px;
  font-weight: 400;
  color: #B0B0B0;
  letter-spacing: 0.02em;
}

.site-header.header-scrolled .logo-text {
  color: var(--primary-dark);
}

.site-header.header-scrolled .logo-domain {
  color: var(--text-muted);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  position: relative;
  font-size: 15px;
  color: #fff;
  font-weight: 500;
  padding: 6px 0;
  transition: color 0.25s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s ease;
}

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

.nav-link:hover::after {
  width: 100%;
}

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

.nav-link.active::after {
  width: 100%;
}

.site-header.header-scrolled .nav-link {
  color: var(--text-main);
}

.site-header.header-scrolled .nav-link:hover,
.site-header.header-scrolled .nav-link.active {
  color: var(--primary-dark);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.search-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.search-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: 50%;
  transition: background 0.25s ease;
}

.search-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
}

.site-header.header-scrolled .search-toggle:hover {
  background: rgba(28, 28, 28, 0.06);
}

.search-toggle svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: #fff;
  stroke-width: 2;
  stroke-linecap: round;
  transition: stroke 0.25s ease;
}

.site-header.header-scrolled .search-toggle svg {
  stroke: var(--text-main);
}

.search-input {
  width: 0;
  opacity: 0;
  padding: 0;
  border-bottom: 1px solid var(--primary);
  font-size: 14px;
  color: #fff;
  transition: width 0.35s ease, opacity 0.35s ease, padding 0.35s ease;
}

.site-header.header-scrolled .search-input {
  color: var(--text-main);
}

.search-input.open {
  width: 200px;
  opacity: 1;
  padding: 6px 0;
  margin-left: 8px;
}

.search-input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.site-header.header-scrolled .search-input::placeholder {
  color: var(--text-muted);
}

.site-header.header-scrolled .search-input {
  border-bottom-color: var(--primary-dark);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: 6px;
}

.hamburger span {
  width: 20px;
  height: 2px;
  background: #fff;
  transition: all 0.3s ease;
}

.site-header.header-scrolled .hamburger span {
  background: var(--text-main);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-warm);
  z-index: 999;
  padding: 48px 32px;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.mobile-menu.open {
  display: flex;
  opacity: 1;
  pointer-events: auto;
}

.mobile-menu a.nav-link {
  color: var(--text-main);
  font-size: 24px;
  line-height: 2.4;
  font-family: var(--font-serif);
  font-weight: 600;
  padding-left: 0;
}

.mobile-menu a.nav-link::after {
  display: none;
}

.mobile-menu a.nav-link.active {
  color: var(--primary-dark);
}

.mobile-menu .btn {
  width: 100%;
  margin-top: 16px;
}

.mobile-menu .btn-outline {
  border-color: var(--text-main);
}

/* ===== Article Banner ===== */
.article-banner {
  background: linear-gradient(135deg, rgba(28, 28, 28, 0.78), rgba(30, 61, 43, 0.55)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  padding: 160px 0 72px;
  color: #fff;
  position: relative;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 32px;
}

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

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

.breadcrumb-sep {
  color: rgba(255, 255, 255, 0.4);
}

.breadcrumb .current {
  color: rgba(255, 255, 255, 0.8);
  max-width: 520px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.article-title {
  font-family: var(--font-serif);
  font-size: 44px;
  line-height: 1.3;
  font-weight: 600;
  max-width: 900px;
  letter-spacing: 0.02em;
  margin-bottom: 28px;
  color: #fff;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 28px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.meta-item svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: var(--primary);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ===== Article Body ===== */
.article-body {
  max-width: 872px;
  margin: 0 auto;
  padding: 64px 24px 72px;
}

.article-content {
  max-width: 720px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-main);
}

.article-content > p {
  margin-bottom: 24px;
}

.article-content h2 {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  margin: 48px 0 16px;
  line-height: 1.4;
}

.article-content h3 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  margin: 36px 0 12px;
  line-height: 1.4;
}

.article-content h4 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  margin: 28px 0 10px;
}

.article-content ul,
.article-content ol {
  margin: 20px 0 24px;
  padding-left: 24px;
}

.article-content ul li {
  list-style: disc;
  margin-bottom: 8px;
}

.article-content ol li {
  list-style: decimal;
  margin-bottom: 8px;
}

.article-content a {
  color: var(--primary-dark);
  text-decoration: underline;
  text-underline-offset: 4px;
}

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

.article-content img {
  border-radius: var(--radius);
  margin: 32px 0;
  box-shadow: var(--shadow);
}

.article-content blockquote {
  border-left: 3px solid var(--primary);
  background: var(--card-warm);
  padding: 20px 24px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
  margin: 28px 0;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.article-content pre {
  background: #1C1C1C;
  color: #E8E8E8;
  padding: 24px;
  border-radius: var(--radius);
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.7;
  margin: 28px 0;
}

.article-content code {
  font-family: 'SFMono-Regular', Menlo, Consolas, monospace;
  font-size: 0.9em;
}

.article-content pre code {
  background: none;
  padding: 0;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 15px;
}

.article-content table th,
.article-content table td {
  border: 1px solid var(--border);
  padding: 12px 16px;
  text-align: left;
}

.article-content table th {
  background: var(--card-warm);
  font-family: var(--font-serif);
  font-weight: 600;
}

.article-empty {
  text-align: center;
  padding: 80px 24px;
}

.article-empty svg {
  width: 64px;
  height: 64px;
  fill: none;
  stroke: var(--text-muted);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  margin: 0 auto 24px;
}

.article-empty h2 {
  font-family: var(--font-serif);
  font-size: 28px;
  color: var(--text-main);
  margin-bottom: 12px;
}

.article-empty p {
  color: var(--text-secondary);
  margin-bottom: 32px;
}

/* ===== Related ===== */
.related-section {
  background: var(--bg-warm);
  padding: 72px 0 88px;
  border-top: 1px solid var(--border);
}

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

.section-head h2 {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text-main);
}

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

.related-card {
  position: relative;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.35s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(198, 166, 100, 0.4);
}

.related-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  transition: transform 0.4s ease;
}

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

.related-card-body {
  padding: 24px;
}

.related-card-body .tag {
  display: inline-block;
  font-size: 12px;
  color: var(--primary-dark);
  border: 1px solid var(--border-gold);
  border-radius: 4px;
  padding: 3px 10px;
  margin-bottom: 12px;
  background: rgba(198, 166, 100, 0.06);
  letter-spacing: 0.04em;
}

.related-card h3 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text-main);
  margin-bottom: 10px;
  transition: color 0.25s ease;
}

.related-card:hover h3 {
  color: var(--primary-dark);
}

.related-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== Back Entry ===== */
.back-entry {
  padding: 56px 24px 80px;
  text-align: center;
  border-top: 1px solid var(--border);
  background: var(--bg-warm);
}

.back-entry .btn + .btn {
  margin-left: 16px;
}

.back-entry .btn svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform 0.25s ease;
}

.back-entry .btn:hover svg {
  transform: translateX(4px);
}

/* ===== CTA ===== */
.cta-section {
  background: var(--green-dark);
  padding: 88px 0;
  color: #fff;
}

.cta-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 64px;
  align-items: center;
}

.cta-left h2 {
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 16px;
}

.cta-left p {
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.7;
  margin-bottom: 28px;
}

.cta-meta {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
}

.cta-meta span {
  display: flex;
  align-items: center;
  gap: 8px;
}

.cta-meta svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: var(--primary);
  stroke-width: 1.8;
  stroke-linecap: round;
}

.cta-right {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: stretch;
}

.cta-right .btn {
  justify-content: center;
  width: 100%;
}

/* ===== Footer ===== */
.site-footer {
  background: #1C1C1C;
  color: #B0B0B0;
  border-top: 1px solid var(--primary);
  padding: 64px 0 32px;
  font-size: 14px;
  line-height: 1.7;
}

.site-footer .container {
  max-width: 1280px;
}

.footer-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-serif);
}

.footer-logo .logo-text {
  font-size: 26px;
  font-weight: 700;
  color: var(--primary);
}

.footer-logo .logo-dot {
  background: rgba(255, 255, 255, 0.4);
}

.footer-logo .logo-domain {
  color: rgba(255, 255, 255, 0.5);
}

.footer-desc {
  max-width: 420px;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.8;
}

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

.footer-social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  transition: all 0.3s ease;
}

.footer-social a:hover {
  border-color: var(--primary);
  background: rgba(198, 166, 100, 0.1);
  transform: translateY(-2px);
}

.footer-social svg {
  width: 18px;
  height: 18px;
  fill: #fff;
  opacity: 0.7;
  transition: opacity 0.3s ease;
}

.footer-social a:hover svg {
  opacity: 1;
}

.footer-middle {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  padding: 40px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-col h4 {
  color: #fff;
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 0.04em;
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.65);
  transition: color 0.25s ease;
}

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

.footer-col.contact li {
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.8;
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding-top: 32px;
  color: rgba(255, 255, 255, 0.4);
  font-size: 13px;
  text-align: center;
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.45);
}

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

/* ===== Reveal Animation ===== */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s cubic-bezier(0.22, 0.61, 0.36, 1), transform 0.6s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 1023px) {
  .nav-links {
    display: none;
  }

  .header-right .btn {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .article-title {
    font-size: 34px;
  }

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

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

@media (max-width: 767px) {
  :root {
    --spacer: 56px;
  }

  .article-banner {
    padding: 120px 0 48px;
  }

  .article-title {
    font-size: 28px;
  }

  .article-meta {
    gap: 16px;
    font-size: 13px;
    flex-wrap: wrap;
  }

  .article-body {
    padding: 40px 20px 56px;
  }

  .article-content {
    font-size: 15px;
    line-height: 1.75;
  }

  .article-content h2 {
    font-size: 24px;
  }

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

  .back-entry {
    padding: 40px 16px 56px;
  }

  .back-entry .btn {
    width: 100%;
    margin: 8px 0;
  }

  .back-entry .btn + .btn {
    margin-left: 0;
  }

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

  .footer-top {
    flex-direction: column;
    gap: 24px;
  }

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

  .cta-left h2 {
    font-size: 24px;
  }

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

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

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

  html {
    scroll-behavior: auto;
  }

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

/* roulang page: category1 */
:root {
      --gold: #C6A664;
      --gold-deep: #A8873F;
      --green: #1E3D2B;
      --warm: #F7F5F1;
      --dark: #1C1C1C;
      --card: #FFFFFF;
      --card-alt: #FCFAF6;
      --text: #2A2A2A;
      --text-secondary: #6B6B6B;
      --text-light: #8C8C8C;
      --line: #E5E0D8;
      --radius: 8px;
      --radius-lg: 12px;
      --radius-sm: 4px;
      --shadow: 0 8px 24px rgba(28,28,28,0.08);
      --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', 'SimSun', serif;
      --font-sans: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
      --font-num: 'DIN Alternate', 'Barlow Condensed', var(--font-sans);
      --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
    }

    *,
    *::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: 1.7;
      color: var(--text);
      background: var(--warm);
    }

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

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

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

    ul,
    ol {
      list-style: none;
    }

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      height: 44px;
      padding: 0 32px;
      border-radius: var(--radius);
      font-size: 15px;
      font-weight: 500;
      cursor: pointer;
      transition: all 0.3s var(--ease);
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--gold);
      color: #1f1a10;
    }

    .btn-primary:hover {
      background: var(--gold-deep);
      transform: translateY(-2px);
      box-shadow: var(--shadow);
    }

    .btn-outline {
      background: transparent;
      border: 1px solid rgba(255, 255, 255, 0.65);
      color: #fff;
    }

    .btn-outline:hover {
      background: var(--green);
      border-color: var(--green);
      color: #fff;
    }

    .btn-dark-outline {
      background: transparent;
      border: 1px solid rgba(42, 42, 42, 0.5);
      color: var(--text);
    }

    .btn-dark-outline:hover {
      background: var(--green);
      border-color: var(--green);
      color: #fff;
    }

    .btn .arrow {
      transition: transform 0.3s var(--ease);
    }

    .btn:hover .arrow {
      transform: translateX(4px);
    }

    .section-pad {
      padding: 100px 0;
    }

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

    .section-head .kicker {
      font-family: var(--font-serif);
      color: var(--gold-deep);
      font-size: 14px;
      letter-spacing: 0.4em;
      text-transform: uppercase;
      margin-bottom: 12px;
    }

    .section-head h2 {
      font-family: var(--font-serif);
      font-size: 36px;
      font-weight: 600;
      line-height: 1.3;
      color: var(--text);
    }

    .section-head p {
      margin-top: 16px;
      max-width: 640px;
      color: var(--text-secondary);
      font-size: 15px;
    }

    /* ===== Header / Nav ===== */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 64px;
      z-index: 100;
      background: transparent;
      transition: background 0.4s var(--ease), box-shadow 0.4s var(--ease), border-color 0.4s var(--ease);
      border-bottom: 0.5px solid rgba(255, 255, 255, 0.10);
    }

    .site-header.scrolled {
      background: var(--warm);
      border-bottom: 0.5px solid var(--line);
      box-shadow: 0 4px 20px rgba(28, 28, 28, 0.04);
    }

    .header-inner {
      height: 64px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 32px;
    }

    .header-brand {
      flex-shrink: 0;
      display: flex;
      align-items: center;
    }

    .brand-link {
      display: inline-flex;
      align-items: center;
      gap: 10px;
    }

    .logo-text {
      font-family: var(--font-serif);
      font-size: 24px;
      font-weight: 700;
      color: var(--gold);
      letter-spacing: 0.06em;
    }

    .logo-dot {
      width: 4px;
      height: 4px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.4);
      display: inline-block;
    }

    .site-header.scrolled .logo-dot {
      background: rgba(42, 42, 42, 0.3);
    }

    .logo-domain {
      font-size: 12px;
      color: rgba(255, 255, 255, 0.5);
      letter-spacing: 0.02em;
    }

    .site-header.scrolled .logo-domain {
      color: var(--text-light);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 36px;
      margin-left: auto;
    }

    .nav-link {
      position: relative;
      font-size: 15px;
      color: rgba(255, 255, 255, 0.82);
      padding: 6px 0;
      transition: color 0.3s var(--ease);
    }

    .site-header.scrolled .nav-link {
      color: var(--text);
    }

    .nav-link::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: 0;
      width: 100%;
      height: 2px;
      background: var(--gold);
      transform: scaleX(0);
      transform-origin: left;
      transition: transform 0.4s var(--ease);
    }

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

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

    .header-actions {
      display: flex;
      align-items: center;
      gap: 14px;
      flex-shrink: 0;
    }

    .header-actions .btn {
      height: 38px;
      padding: 0 20px;
      font-size: 14px;
    }

    .header-actions .btn-ghost-header {
      background: transparent;
      border: 1px solid rgba(255, 255, 255, 0.45);
      color: #fff;
    }

    .site-header.scrolled .btn-ghost-header {
      border-color: rgba(42, 42, 42, 0.35);
      color: var(--text);
    }

    .header-actions .btn-ghost-header:hover {
      border-color: var(--green);
      background: var(--green);
      color: #fff;
    }

    .nav-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      width: 44px;
      height: 44px;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      background: transparent;
      border: none;
      padding: 0;
    }

    .nav-toggle span {
      display: block;
      width: 22px;
      height: 2px;
      background: #fff;
      transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
    }

    .site-header.scrolled .nav-toggle span {
      background: var(--text);
    }

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

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

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

    /* ===== Hero ===== */
    .page-hero {
      background: linear-gradient(rgba(28, 28, 28, 0.86), rgba(28, 28, 28, 0.72)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
      min-height: 90vh;
      display: flex;
      align-items: center;
      padding: 120px 0 80px;
      position: relative;
    }

    .hero-inner {
      max-width: 820px;
    }

    .hero-kicker {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-family: var(--font-serif);
      color: var(--gold);
      font-size: 14px;
      letter-spacing: 0.4em;
      margin-bottom: 24px;
      text-transform: uppercase;
    }

    .hero-kicker::before {
      content: '';
      width: 36px;
      height: 1px;
      background: var(--gold);
      display: inline-block;
    }

    .hero-title {
      font-family: var(--font-serif);
      font-size: 50px;
      font-weight: 600;
      line-height: 1.26;
      color: #fff;
      margin-bottom: 24px;
      letter-spacing: 0.02em;
    }

    .hero-title span {
      color: var(--gold);
      display: block;
    }

    .hero-sub {
      max-width: 620px;
      font-size: 16px;
      line-height: 1.8;
      color: rgba(255, 255, 255, 0.78);
      margin-bottom: 36px;
    }

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

    .hero-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      margin-top: 40px;
      padding-top: 28px;
      border-top: 1px solid rgba(255, 255, 255, 0.12);
    }

    .hero-badges span {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.7);
    }

    .hero-badges svg {
      width: 15px;
      height: 15px;
      fill: var(--gold);
      flex-shrink: 0;
    }

    /* ===== Metrics ===== */
    .metrics-section {
      background: var(--warm);
      border-top: 1px solid var(--line);
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      border-bottom: 1px solid var(--line);
    }

    .metric-item {
      padding: 56px 32px;
      border-right: 0.5px solid var(--line);
      text-align: center;
    }

    .metric-item:first-child {
      border-left: 0.5px solid var(--line);
    }

    .metric-label {
      font-size: 13px;
      letter-spacing: 0.1em;
      color: var(--text-secondary);
      margin-bottom: 12px;
    }

    .metric-num {
      font-family: var(--font-num);
      font-size: 52px;
      font-weight: 600;
      color: var(--gold);
      line-height: 1.2;
      letter-spacing: 0.02em;
      margin-bottom: 8px;
    }

    .metric-num small {
      font-size: 22px;
      margin-left: 2px;
    }

    .metric-desc {
      font-size: 13px;
      color: var(--text-light);
    }

    /* ===== Guide Services ===== */
    .guide-services {
      background: var(--card);
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }

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

    .service-row {
      display: grid;
      grid-template-columns: 120px 260px 1fr auto;
      align-items: center;
      gap: 32px;
      padding: 36px 24px;
      border-bottom: 0.5px solid var(--line);
      transition: background 0.3s var(--ease), padding-left 0.3s var(--ease);
      cursor: default;
    }

    .service-row:hover {
      background: var(--card-alt);
      padding-left: 32px;
    }

    .service-index {
      font-family: var(--font-serif);
      font-size: 34px;
      color: var(--gold);
      font-weight: 400;
      line-height: 1;
    }

    .service-title {
      font-family: var(--font-serif);
      font-size: 22px;
      font-weight: 600;
      color: var(--text);
      line-height: 1.4;
    }

    .service-desc {
      font-size: 15px;
      color: var(--text-secondary);
      line-height: 1.7;
      max-width: 420px;
    }

    .service-link {
      font-size: 14px;
      color: var(--gold-deep);
      white-space: nowrap;
      opacity: 0;
      transform: translateX(-6px);
      transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .service-row:hover .service-link {
      opacity: 1;
      transform: translateX(0);
    }

    /* ===== Scenarios ===== */
    .scenarios-section {
      background: var(--warm);
    }

    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .scenario-card {
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 32px;
      transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
    }

    .scenario-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow);
      border-color: rgba(198, 166, 100, 0.35);
    }

    .scenario-icon {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: var(--card-alt);
      border: 1px solid var(--line);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--gold-deep);
    }

    .scenario-icon svg {
      width: 22px;
      height: 22px;
    }

    .scenario-card h3 {
      font-family: var(--font-serif);
      font-size: 18px;
      font-weight: 600;
      color: var(--text);
      margin-bottom: 10px;
    }

    .scenario-card p {
      font-size: 14px;
      line-height: 1.75;
      color: var(--text-secondary);
    }

    /* ===== Steps ===== */
    .steps-section {
      background: var(--dark);
      color: #fff;
    }

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

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

    .steps-section .section-head p {
      color: rgba(255, 255, 255, 0.6);
    }

    .steps-wrap {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 60px;
      align-items: center;
    }

    .steps-list {
      position: relative;
      padding-left: 36px;
    }

    .steps-list::before {
      content: '';
      position: absolute;
      left: 10px;
      top: 16px;
      bottom: 16px;
      width: 1px;
      background: rgba(255, 255, 255, 0.14);
    }

    .step-item {
      position: relative;
      padding: 24px 24px 24px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      margin-bottom: 0;
    }

    .step-item:last-child {
      border-bottom: none;
    }

    .step-dot {
      position: absolute;
      left: -36px;
      top: 28px;
      width: 21px;
      height: 21px;
      border-radius: 50%;
      background: var(--dark);
      border: 2px solid var(--gold);
      z-index: 1;
    }

    .step-item:first-child .step-dot {
      background: var(--gold);
    }

    .step-num {
      font-family: var(--font-num);
      font-size: 13px;
      letter-spacing: 0.2em;
      color: var(--gold);
      text-transform: uppercase;
      margin-bottom: 6px;
    }

    .step-item h3 {
      font-family: var(--font-serif);
      font-size: 20px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 8px;
    }

    .step-item p {
      font-size: 14px;
      line-height: 1.75;
      color: rgba(255, 255, 255, 0.62);
      max-width: 420px;
    }

    .steps-visual {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
    }

    .steps-visual img {
      width: 100%;
      height: 460px;
      object-fit: cover;
      border-radius: var(--radius-lg);
    }

    .steps-visual::after {
      content: '';
      position: absolute;
      inset: 0;
      border: 1px solid rgba(198, 166, 100, 0.3);
      border-radius: var(--radius-lg);
      pointer-events: none;
    }

    /* ===== FAQ ===== */
    .faq-section {
      background: var(--warm);
      border-top: 1px solid var(--line);
    }

    .faq-wrap {
      max-width: 860px;
    }

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

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

    .faq-q {
      display: flex;
      align-items: center;
      gap: 20px;
      padding: 26px 8px;
      cursor: pointer;
      user-select: none;
    }

    .faq-icon {
      width: 22px;
      height: 22px;
      flex-shrink: 0;
      position: relative;
      border: 1px solid var(--line);
      border-radius: 50%;
      transition: transform 0.4s var(--ease), border-color 0.3s var(--ease);
    }

    .faq-icon::before,
    .faq-icon::after {
      content: '';
      position: absolute;
      top: 50%;
      left: 50%;
      width: 10px;
      height: 1px;
      background: var(--text-secondary);
      transform: translate(-50%, -50%);
      transition: background 0.3s var(--ease);
    }

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

    .faq-item.active .faq-icon {
      border-color: var(--gold);
      transform: rotate(45deg);
    }

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

    .faq-q h3 {
      font-family: var(--font-serif);
      font-size: 18px;
      font-weight: 600;
      color: var(--text);
      line-height: 1.5;
    }

    .faq-a {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.45s var(--ease);
    }

    .faq-a-inner {
      padding: 0 24px 28px 50px;
      font-size: 15px;
      line-height: 1.8;
      color: var(--text-secondary);
      border-left: 2px solid var(--gold);
      margin-left: 10px;
    }

    .faq-item.active .faq-a {
      max-height: 360px;
    }

    /* ===== CTA Contact ===== */
    .cta-contact {
      background: var(--dark);
      color: #fff;
    }

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

    .cta-left h2 {
      font-family: var(--font-serif);
      font-size: 32px;
      font-weight: 600;
      color: #fff;
      line-height: 1.4;
      margin-bottom: 18px;
    }

    .cta-left p {
      font-size: 15px;
      line-height: 1.8;
      color: rgba(255, 255, 255, 0.68);
      margin-bottom: 28px;
      max-width: 440px;
    }

    .contact-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .contact-list li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 14px;
      color: rgba(255, 255, 255, 0.75);
      line-height: 1.6;
    }

    .contact-list svg {
      width: 18px;
      height: 18px;
      fill: var(--gold);
      flex-shrink: 0;
      margin-top: 2px;
    }

    .cta-form-card {
      background: var(--card);
      border-radius: var(--radius-lg);
      padding: 36px;
      border: 1px solid var(--line);
    }

    .form-group {
      margin-bottom: 22px;
      position: relative;
    }

    .form-group input,
    .form-group textarea {
      width: 100%;
      height: 46px;
      border-bottom: 1px solid var(--line);
      background: transparent;
      padding: 8px 0;
      font-size: 15px;
      color: var(--text);
      border-radius: 0;
      transition: border-color 0.3s var(--ease);
    }

    .form-group textarea {
      height: auto;
      min-height: 80px;
      resize: vertical;
    }

    .form-group input:focus,
    .form-group textarea:focus {
      border-bottom-color: var(--gold);
    }

    .form-group input::placeholder,
    .form-group textarea::placeholder {
      color: var(--text-light);
    }

    .form-submit {
      width: 100%;
      margin-top: 8px;
    }

    .form-privacy {
      margin-top: 14px;
      font-size: 12px;
      color: var(--text-light);
      line-height: 1.6;
      text-align: center;
    }

    /* ===== Footer ===== */
    .site-footer {
      background: #1C1C1C;
      border-top: 1px solid var(--gold);
      color: #B0B0B0;
      padding: 64px 0 32px;
      font-size: 14px;
    }

    .footer-top {
      display: flex;
      flex-wrap: wrap;
      gap: 32px;
      align-items: flex-start;
      justify-content: space-between;
      padding-bottom: 40px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

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

    .footer-logo .logo-text {
      font-size: 26px;
    }

    .footer-logo .logo-domain {
      color: rgba(255, 255, 255, 0.4);
    }

    .footer-desc {
      max-width: 420px;
      font-size: 13px;
      line-height: 1.8;
      color: #B0B0B0;
    }

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

    .footer-social a {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 36px;
      height: 36px;
      border-radius: 50%;
      border: 1px solid rgba(255, 255, 255, 0.15);
      transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
    }

    .footer-social a:hover {
      border-color: var(--gold);
      background: rgba(198, 166, 100, 0.1);
    }

    .footer-social svg {
      width: 16px;
      height: 16px;
      fill: rgba(255, 255, 255, 0.6);
      transition: fill 0.3s var(--ease);
    }

    .footer-social a:hover svg {
      fill: var(--gold);
    }

    .footer-middle {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 40px;
      padding: 40px 0;
    }

    .footer-col h4 {
      color: #fff;
      font-family: var(--font-serif);
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 16px;
    }

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

    .footer-col a {
      color: #B0B0B0;
      transition: color 0.3s var(--ease);
    }

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

    .footer-col.contact ul li {
      line-height: 1.7;
      color: #B0B0B0;
    }

    .footer-bottom {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      justify-content: space-between;
      align-items: center;
      padding-top: 28px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 13px;
      color: rgba(255, 255, 255, 0.4);
    }

    .footer-bottom a {
      color: rgba(255, 255, 255, 0.5);
      transition: color 0.3s var(--ease);
    }

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

    /* ===== Reveal Animation ===== */
    [data-reveal] {
      opacity: 0;
      transform: translateY(16px);
      transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
    }

    [data-reveal].revealed {
      opacity: 1;
      transform: translateY(0);
    }

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

      [data-reveal] {
        opacity: 1;
        transform: none;
      }
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
      .service-row {
        grid-template-columns: 80px 1fr 1.2fr;
        gap: 20px;
      }

      .service-link {
        display: none;
      }

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

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

      .steps-visual img {
        height: 320px;
      }

      .header-actions .btn:not(.btn-primary) {
        display: none;
      }
    }

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

      .section-head {
        margin-bottom: 36px;
      }

      .section-head h2 {
        font-size: 28px;
      }

      .nav-links {
        position: fixed;
        top: 64px;
        left: 0;
        width: 100%;
        background: var(--warm);
        flex-direction: column;
        align-items: flex-start;
        gap: 24px;
        padding: 40px 32px 48px;
        transform: translateY(-130%);
        transition: transform 0.45s var(--ease);
        z-index: 99;
        border-bottom: 1px solid var(--line);
        box-shadow: var(--shadow);
      }

      .nav-links.open {
        transform: translateY(0);
      }

      .nav-link {
        font-size: 22px;
        color: var(--text) !important;
      }

      .nav-link.active {
        color: var(--gold-deep) !important;
      }

      .nav-links .btn {
        display: flex;
        width: 100%;
        margin-top: 8px;
      }

      .nav-toggle {
        display: flex;
      }

      .header-actions .btn {
        display: none;
      }

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

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

      .metric-item {
        padding: 32px 16px;
        border-bottom: 0.5px solid var(--line);
      }

      .metric-item:nth-child(odd) {
        border-left: none;
      }
      
      .metric-item:nth-child(1),
      .metric-item:nth-child(2) {
        border-top: 0.5px solid var(--line);
      }

      .service-row {
        display: block;
        padding: 28px 16px;
      }

      .service-row:hover {
        padding-left: 16px;
      }

      .service-index {
        font-size: 24px;
        margin-bottom: 10px;
      }

      .service-title {
        font-size: 19px;
        margin-bottom: 8px;
      }

      .service-desc {
        font-size: 14px;
      }

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

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

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

      .footer-top {
        flex-direction: column;
        gap: 24px;
      }

      .page-hero {
        min-height: 70vh;
        padding: 100px 0 56px;
      }

      .hero-sub {
        font-size: 15px;
      }

      .faq-a-inner {
        padding-left: 20px;
        margin-left: 0;
      }
    }

    @media (max-width: 520px) {
      .container {
        padding: 0 18px;
      }

      .hero-kicker {
        font-size: 12px;
      }

      .hero-title {
        font-size: 30px;
      }

      .metric-num {
        font-size: 38px;
      }

      .metric-desc {
        font-size: 12px;
      }

      .form-group input,
      .form-group textarea {
        font-size: 14px;
      }

      .cta-form-card {
        padding: 24px;
      }

      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }

/* roulang page: category2 */
:root {
  --gold: #C6A664;
  --gold-dark: #A8873F;
  --green-deep: #1E3D2B;
  --bg-warm: #F7F5F1;
  --bg-dark: #1C1C1C;
  --card-white: #FFFFFF;
  --card-warm: #FCFAF6;
  --text-main: #2A2A2A;
  --text-sub: #6B6B6B;
  --text-weak: #8C8C8C;
  --line: #E5E0D8;
  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 8px 24px rgba(28,28,28,0.08);
  --container: 1280px;
  --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', 'SimSun', serif;
  --font-sans: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

*,
*::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);
  background: var(--bg-warm);
  color: var(--text-main);
  line-height: 1.6;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color .3s var(--ease), border-color .3s var(--ease), background .3s var(--ease), box-shadow .3s var(--ease), transform .3s var(--ease);
}

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

ul,
ol {
  list-style: none;
}

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

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 32px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: all .3s var(--ease);
  white-space: nowrap;
  border: 1px solid transparent;
  line-height: 1;
}

.btn-primary {
  background: var(--gold);
  color: #1C1C1C;
  border-color: var(--gold);
}

.btn-primary:hover {
  background: var(--gold-dark);
  border-color: var(--gold-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(198, 166, 100, 0.28);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: none;
}

.btn-outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.8);
  color: #fff;
}

.btn-outline:hover {
  background: var(--green-deep);
  border-color: var(--green-deep);
  color: #fff;
  transform: translateY(-2px);
}

.btn-outline-dark {
  background: transparent;
  border-color: #2A2A2A;
  color: #2A2A2A;
}

.btn-outline-dark:hover {
  background: var(--green-deep);
  border-color: var(--green-deep);
  color: #fff;
}

.btn-sm {
  height: 36px;
  padding: 0 18px;
  font-size: 14px;
}

.btn-block {
  width: 100%;
}

.btn .arrow {
  transition: transform .3s var(--ease);
}

.btn:hover .arrow {
  transform: translateX(4px);
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 64px;
  background: transparent;
  transition: background .4s var(--ease), box-shadow .4s var(--ease), border-color .4s var(--ease);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.site-header.scrolled {
  background: var(--bg-warm);
  border-bottom: 0.5px solid var(--line);
  box-shadow: 0 2px 12px rgba(28, 28, 28, 0.04);
}

.header-inner {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin: 0 auto;
  max-width: var(--container);
  padding-left: 24px;
  padding-right: 24px;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 36px;
  flex: 1;
}

.logo {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.logo-text {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.02em;
}

.logo-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(28, 28, 28, 0.4);
}

.logo-domain {
  font-size: 12px;
  color: var(--text-weak);
  letter-spacing: 0.04em;
  font-weight: 400;
}

.site-header:not(.scrolled) .logo-dot {
  background: rgba(255, 255, 255, 0.4);
}

.site-header:not(.scrolled) .logo-domain {
  color: rgba(255, 255, 255, 0.55);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  position: relative;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  letter-spacing: 0.02em;
  padding: 6px 0;
  transition: color .3s var(--ease);
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--gold);
  transition: width .35s var(--ease);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

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

.site-header.scrolled .nav-link {
  color: var(--text-main);
}

.site-header.scrolled .nav-link:hover,
.site-header.scrolled .nav-link.active {
  color: var(--gold);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.search-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  color: #fff;
  cursor: pointer;
  transition: background .3s var(--ease), color .3s var(--ease);
}

.search-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
}

.site-header.scrolled .search-toggle {
  color: var(--text-main);
}

.site-header.scrolled .search-toggle:hover {
  background: rgba(28, 28, 28, 0.04);
}

.search-toggle svg {
  width: 18px;
  height: 18px;
}

.search-box {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--bg-warm);
  border-radius: 0 0 8px 8px;
  box-shadow: var(--shadow);
  padding: 12px 16px;
  width: 220px;
  border: 1px solid var(--line);
  border-top: none;
}

.search-box.open {
  display: block;
}

.search-box input {
  width: 100%;
  height: 38px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  padding: 0 4px;
  transition: border-color .3s var(--ease);
}

.search-box input:focus {
  border-bottom-color: var(--gold);
}

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

.menu-toggle span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: #fff;
  transition: transform .3s var(--ease), opacity .3s var(--ease), background .3s var(--ease);
}

.scrolled .menu-toggle span {
  background: var(--text-main);
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* 移动端抽屉导航 */
.mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-warm);
  z-index: 99;
  flex-direction: column;
  padding: 40px 32px 32px;
  transform: translateY(-16px);
  opacity: 0;
  pointer-events: none;
  transition: all .4s var(--ease);
}

.mobile-menu.open {
  display: flex;
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.mobile-menu .nav-link {
  font-family: var(--font-serif);
  font-size: 24px;
  color: var(--text-main);
  padding: 16px 0;
  border-bottom: 0.5px solid var(--line);
}

.mobile-menu .nav-link.active {
  color: var(--gold);
}

.mobile-menu-btns {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 32px;
}

/* Hero */
.category-hero {
  position: relative;
  min-height: 90vh;
  background: var(--bg-dark);
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-split {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
  width: 100%;
  display: grid;
  grid-template-columns: 45% 55%;
  min-height: 90vh;
  position: relative;
}

.hero-split::before {
  content: '';
  position: absolute;
  left: 45%;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, rgba(198, 166, 100, 0.15), rgba(198, 166, 100, 0.7), rgba(198, 166, 100, 0.15));
  z-index: 2;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 120px 48px 80px 0;
  position: relative;
  z-index: 3;
}

.eyebrow {
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.4em;
  color: var(--gold);
  margin-bottom: 20px;
  text-transform: uppercase;
}

.hero-copy h1 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 50px;
  line-height: 1.22;
  color: #fff;
  margin-bottom: 24px;
  letter-spacing: 0.01em;
}

.hero-sub {
  font-size: 16px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.72);
  max-width: 440px;
  margin-bottom: 38px;
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.trust-badges {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
}

.trust-badges span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.trust-badges span::before {
  content: '';
  width: 14px;
  height: 14px;
  border: 1px solid var(--gold);
  border-radius: 50%;
  background: rgba(198, 166, 100, 0.12);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 14 14' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M4 7.2 6.1 9.4 10 4.8' fill='none' stroke='%23C6A664' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 10px;
}

.hero-visual {
  position: relative;
  overflow: hidden;
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 90vh;
}

.hero-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(28, 28, 28, 0.65) 0%, rgba(28, 28, 28, 0.2) 60%, rgba(28, 28, 28, 0.35) 100%);
}

.hero-float-card {
  position: absolute;
  right: 36px;
  bottom: 80px;
  background: var(--card-white);
  border: 1px solid var(--gold);
  border-radius: var(--radius);
  padding: 18px 24px;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.18);
  z-index: 4;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 150px;
}

.hero-float-card strong {
  font-family: var(--font-serif);
  font-size: 28px;
  color: var(--gold-dark);
  line-height: 1.2;
}

.hero-float-card span {
  font-size: 13px;
  color: var(--text-sub);
}

/* 指标看板 */
.metrics {
  background: var(--bg-warm);
  border-top: 1px solid var(--line);
  padding: 72px 0;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.metric-item {
  padding: 24px 32px;
  text-align: center;
  border-right: 0.5px solid var(--line);
}

.metric-item:last-child {
  border-right: none;
}

.metric-label {
  display: block;
  font-size: 13px;
  color: var(--text-weak);
  margin-bottom: 10px;
  letter-spacing: 0.04em;
}

.metric-value {
  display: block;
  font-family: var(--font-serif);
  font-size: 54px;
  font-weight: 600;
  color: var(--gold);
  line-height: 1.1;
  letter-spacing: 0.02em;
}

.metric-note {
  display: block;
  font-size: 13px;
  color: var(--text-sub);
  margin-top: 10px;
}

/* 服务体系 */
.service-matrix {
  background: var(--card-white);
  padding: 96px 0;
}

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

.section-lead {
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.7;
  max-width: 560px;
  margin-bottom: 48px;
}

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

.service-row {
  display: grid;
  grid-template-columns: 80px 1fr 1.4fr;
  align-items: center;
  gap: 32px;
  padding: 32px 24px;
  border-bottom: 0.5px solid var(--line);
  transition: background .3s var(--ease);
  position: relative;
}

.service-row:hover {
  background: var(--card-warm);
}

.service-row .row-arrow {
  position: absolute;
  right: 24px;
  opacity: 0;
  transform: translateX(-8px);
  transition: all .3s var(--ease);
  color: var(--gold-dark);
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.service-row:hover .row-arrow {
  opacity: 1;
  transform: translateX(0);
}

.service-num {
  font-family: var(--font-serif);
  font-size: 32px;
  color: var(--gold);
  font-weight: 600;
}

.service-row:hover .service-num {
  color: var(--gold-dark);
}

.service-row h3 {
  font-family: var(--font-serif);
  font-size: 23px;
  font-weight: 600;
  color: var(--text-main);
}

.service-row p {
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.6;
  max-width: 520px;
}

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

.scenario-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.scenario-card {
  background: var(--card-white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all .3s var(--ease);
}

.scenario-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
  border-color: rgba(198, 166, 100, 0.4);
}

.scenario-card .cover {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.scenario-card .cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s var(--ease);
}

.scenario-card:hover .cover img {
  transform: scale(1.05);
}

.scenario-body {
  padding: 24px 24px 28px;
}

.scenario-body h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 10px;
}

.scenario-body p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.65;
}

/* 方案对比 */
.comparison {
  padding: 96px 0;
  background: var(--bg-warm);
}

.comparison-wrap {
  display: grid;
  grid-template-columns: 1fr 1px 1fr;
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.compare-col {
  padding: 48px 48px;
}

.compare-new {
  background: var(--green-deep);
}

.compare-col h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 28px;
}

.compare-old h3 {
  font-family: var(--font-sans);
  color: var(--text-main);
}

.compare-new h3 {
  font-family: var(--font-serif);
  color: #fff;
}

.compare-col ul li {
  padding: 14px 0;
  border-bottom: 0.5px dashed rgba(0, 0, 0, 0.15);
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-sub);
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.compare-new ul li {
  border-bottom: 0.5px dashed rgba(255, 255, 255, 0.15);
  color: rgba(255, 255, 255, 0.85);
}

.compare-col ul li:last-child {
  border-bottom: none;
}

.compare-col .icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  margin-top: 2px;
}

.compare-old .icon {
  background: rgba(107, 107, 107, 0.1);
  color: var(--text-weak);
}

.compare-new .icon {
  background: rgba(198, 166, 100, 0.16);
  color: var(--gold);
}

.compare-divider {
  background: var(--gold);
  width: 1px;
}

.compare-banner {
  margin-top: 32px;
  background: var(--gold);
  border-radius: var(--radius);
  padding: 24px 40px;
  text-align: center;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: #1C1C1C;
  letter-spacing: 0.02em;
}

/* 服务流程 */
.process {
  padding: 96px 0;
  background: var(--card-white);
}

.timeline {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 32px;
  margin-top: 48px;
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 20px;
  left: 8%;
  right: 8%;
  height: 1px;
  background: var(--line);
}

.timeline-item {
  position: relative;
  padding-top: 60px;
}

.timeline-item .tl-dot {
  position: absolute;
  top: 12px;
  left: 0;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg-warm);
  border: 2px solid var(--gold);
  z-index: 2;
}

.timeline-item .tl-num {
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--gold-dark);
  letter-spacing: 0.08em;
  margin-bottom: 8px;
  display: block;
}

.timeline-item h3 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 10px;
}

.timeline-item p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.65;
}

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

.faq-list {
  max-width: 860px;
  margin: 48px auto 0;
  border-top: 1px solid var(--line);
}

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

.faq-question {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px 8px;
  cursor: pointer;
  transition: background .3s var(--ease);
}

.faq-question:hover {
  background: rgba(198, 166, 100, 0.03);
}

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

.faq-icon::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 0;
  width: 18px;
  height: 1.5px;
  background: var(--gold);
}

.faq-icon::after {
  content: '';
  position: absolute;
  top: 0;
  left: 8px;
  width: 1.5px;
  height: 18px;
  background: var(--gold);
  transition: transform .3s var(--ease);
}

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

.faq-question span {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  color: var(--text-main);
}

.faq-answer {
  display: none;
  padding: 0 40px 28px 42px;
  border-left: 2px solid var(--gold);
  margin-left: 8px;
  line-height: 1.8;
  font-size: 15px;
  color: var(--text-sub);
  background: var(--card-warm);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.faq-item.open .faq-answer {
  display: block;
}

/* CTA 表单 */
.cta-section {
  padding: 96px 0;
  background: var(--bg-dark);
  position: relative;
}

.cta-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.cta-copy h2 {
  font-family: var(--font-serif);
  font-size: 34px;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 16px;
}

.cta-copy p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 32px;
}

.cta-contact {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 24px;
}

.cta-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  padding: 6px 0;
}

.cta-contact li svg {
  width: 16px;
  height: 16px;
  color: var(--gold);
}

.cta-form-card {
  background: var(--card-white);
  border-radius: var(--radius-lg);
  padding: 40px;
  border: 1px solid var(--line);
}

.form-group {
  margin-bottom: 28px;
  position: relative;
}

.form-group label {
  display: block;
  font-size: 13px;
  color: var(--text-weak);
  margin-bottom: 6px;
  letter-spacing: 0.02em;
  transition: color .3s var(--ease);
}

.form-group input,
.form-group textarea {
  width: 100%;
  height: 44px;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  color: var(--text-main);
  padding: 4px 0;
  transition: border-color .3s var(--ease);
  border-radius: 0;
  background: transparent;
}

.form-group textarea {
  height: 72px;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  border-bottom-color: var(--gold);
}

.form-group input:focus + label,
.form-group textarea:focus + label {
  color: var(--gold);
}

.form-privacy {
  font-size: 12px;
  color: var(--text-weak);
  margin-top: 16px;
  text-align: center;
  line-height: 1.6;
}

/* 页脚 */
.site-footer {
  background: #1C1C1C;
  border-top: 1px solid var(--gold);
  padding-top: 56px;
  color: #B0B0B0;
}

.footer-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  padding-bottom: 40px;
  border-bottom: 0.5px solid rgba(255, 255, 255, 0.08);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 6px;
}

.footer-logo .logo-text {
  color: var(--gold);
  font-size: 22px;
}

.footer-logo .logo-domain {
  color: rgba(255, 255, 255, 0.4);
}

.footer-desc {
  font-size: 14px;
  max-width: 360px;
  line-height: 1.8;
  margin-top: 16px;
}

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

.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: #B0B0B0;
  transition: all .3s var(--ease);
}

.footer-social a:hover {
  border-color: var(--gold);
  color: var(--gold);
  transform: translateY(-2px);
}

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

.footer-middle {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  padding: 40px 0;
}

.footer-col h4 {
  font-size: 14px;
  color: #fff;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 0.04em;
}

.footer-col ul li {
  padding: 5px 0;
  font-size: 13px;
}

.footer-col ul li a {
  color: #B0B0B0;
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 24px 0 32px;
  border-top: 0.5px solid rgba(255, 255, 255, 0.08);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.5);
}

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

/* 滚动浮现 */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 焦点状态 */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

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

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

  .metric-value {
    opacity: 1 !important;
  }
}

/* 响应式 */
@media (max-width: 1024px) {
  .hero-copy h1 {
    font-size: 40px;
  }

  .service-row {
    grid-template-columns: 60px 1fr;
    gap: 16px;
  }

  .service-row p {
    grid-column: 2;
    margin-top: -12px;
  }

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

  .timeline {
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
  }

  .timeline::before {
    display: none;
  }

  .timeline-item {
    padding-top: 40px;
  }
}

@media (max-width: 768px) {
  body {
    font-size: 14px;
  }

  .container {
    padding-left: 20px;
    padding-right: 20px;
  }

  .header-left {
    gap: 16px;
  }

  .nav-links {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .header-right .btn {
    display: none;
  }

  .site-header:not(.scrolled) .menu-toggle span {
    background: #fff;
  }

  .site-header.scrolled .menu-toggle span {
    background: var(--text-main);
  }

  .hero-split {
    grid-template-columns: 1fr;
    min-height: 70vh;
  }

  .hero-split::before {
    display: none;
  }

  .hero-copy {
    padding: 100px 0 32px;
  }

  .hero-copy h1 {
    font-size: 34px;
  }

  .hero-sub {
    font-size: 15px;
  }

  .hero-visual {
    min-height: 300px;
  }

  .hero-visual img {
    min-height: 300px;
  }

  .hero-float-card {
    right: 20px;
    bottom: 24px;
    padding: 14px 20px;
    min-width: 130px;
  }

  .hero-float-card strong {
    font-size: 22px;
  }

  .hero-cta {
    flex-direction: column;
    align-items: stretch;
  }

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

  .metrics {
    padding: 48px 0;
  }

  .metrics-grid {
    grid-template-columns: 1fr 1fr;
    border-top: 1px solid var(--line);
    border-left: 1px solid var(--line);
  }

  .metric-item {
    padding: 32px 16px;
    border-bottom: 0.5px solid var(--line);
    border-right: 0.5px solid var(--line);
  }

  .metric-value {
    font-size: 42px;
  }

  .service-matrix {
    padding: 64px 0;
  }

  .section-title {
    font-size: 28px;
  }

  .service-row {
    display: block;
    padding: 24px 0;
    position: relative;
  }

  .service-row p {
    margin-top: 10px;
  }

  .service-num {
    font-size: 24px;
  }

  .service-row h3 {
    font-size: 19px;
    margin-top: 4px;
  }

  .scenarios {
    padding: 64px 0;
  }

  .scenario-cards {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-top: 32px;
  }

  .comparison {
    padding: 64px 0;
  }

  .comparison-wrap {
    grid-template-columns: 1fr;
  }

  .compare-divider {
    width: 100%;
    height: 1px;
  }

  .compare-col {
    padding: 32px 24px;
  }

  .compare-banner {
    font-size: 16px;
    padding: 18px 24px;
  }

  .process {
    padding: 64px 0;
  }

  .timeline {
    grid-template-columns: 1fr;
    gap: 24px;
    margin-top: 32px;
  }

  .timeline-item {
    padding-top: 0;
    padding-left: 32px;
  }

  .timeline-item .tl-dot {
    top: 4px;
    left: 0;
  }

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

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

  .faq-answer {
    padding: 0 20px 24px 28px;
  }

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

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

  .cta-form-card {
    padding: 28px 24px;
  }

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

  .footer-top {
    flex-direction: column;
    gap: 24px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}

@media (max-width: 520px) {
  .hero-copy h1 {
    font-size: 28px;
  }

  .metric-value {
    font-size: 36px;
  }

  .hero-cta .btn {
    font-size: 14px;
    padding: 0 20px;
  }

  .compare-col h3 {
    font-size: 16px;
  }
}