/* roulang page: index */
/* ========== Design Tokens ========== */
:root {
  --bg: #F5F1E9;
  --surface: #FFFFFF;
  --surface-2: #EFE9DF;
  --text: #111820;
  --text-2: #5A5E66;
  --text-3: #8C8F96;
  --primary: #1E5A4F;
  --primary-hover: #153C36;
  --primary-soft: rgba(30, 90, 79, 0.12);
  --accent: #C9975C;
  --accent-hover: #B0804A;
  --accent-soft: rgba(201, 151, 92, 0.18);
  --line: #E3DAC9;
  --shadow: 0 10px 30px rgba(17, 24, 32, 0.06);
  --shadow-lg: 0 18px 44px rgba(17, 24, 32, 0.12);
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'STZhongsong', serif;
  --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  --space: 8px;
  --transition: 0.3s ease;
}

/* ========== Reset & Base ========== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}
img {
  max-width: 100%;
  display: block;
  height: auto;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}
button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}
ul, ol {
  list-style: none;
}
::selection {
  background: var(--accent);
  color: var(--text);
}
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ========== Typography ========== */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  line-height: 1.2;
  color: var(--text);
}
.eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-soft);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  margin-bottom: 20px;
}
.section-head {
  max-width: 720px;
  margin-bottom: 56px;
}
.section-head h2 {
  font-size: clamp(24px, 4vw, 40px);
  margin-bottom: 14px;
}
.section-head p {
  font-size: 16px;
  color: var(--text-2);
  max-width: 42em;
  line-height: 1.75;
}

/* ========== Container ========== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== Section ========== */
.section {
  padding: clamp(64px, 8vw, 112px) 0;
}
.section-alt {
  background: var(--surface);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  transition: all var(--transition);
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #FFFFFF;
  box-shadow: 0 4px 16px rgba(30, 90, 79, 0.25);
}
.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(30, 90, 79, 0.32);
  color: #FFFFFF;
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(30, 90, 79, 0.2);
}
.btn-outline {
  background: transparent;
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, 0.6);
}
.btn-outline:hover {
  border-color: #FFFFFF;
  background: rgba(255, 255, 255, 0.1);
  color: #FFFFFF;
  transform: translateY(-1px);
}
.btn-outline-dark {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline-dark:hover {
  background: var(--primary);
  color: #FFFFFF;
  transform: translateY(-1px);
}
.btn-sm {
  padding: 8px 20px;
  font-size: 14px;
}
.btn-block {
  width: 100%;
}

/* ========== Header / Nav ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 72px;
  z-index: 1000;
  background: rgba(17, 24, 32, 0.25);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.site-header.scrolled {
  background: rgba(245, 241, 233, 0.92);
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--primary);
  color: #FFFFFF;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(30, 90, 79, 0.3);
}
.brand-text {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #FFFFFF;
  transition: color var(--transition);
}
.site-header.scrolled .brand-text {
  color: var(--text);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-link {
  position: relative;
  display: inline-block;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}
.nav-link:hover {
  color: #FFFFFF;
  background: rgba(255, 255, 255, 0.1);
}
.nav-link.active {
  color: #FFFFFF;
  font-weight: 600;
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 14px;
  right: 14px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.site-header.scrolled .nav-link {
  color: var(--text);
}
.site-header.scrolled .nav-link:hover {
  color: var(--primary);
  background: var(--primary-soft);
}
.site-header.scrolled .nav-link.active {
  color: var(--primary);
}
.site-header.scrolled .nav-link.active::after {
  background: var(--accent);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: #FFFFFF;
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.site-header.scrolled .nav-toggle span {
  background: var(--text);
}
.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
.site-header.scrolled .nav-toggle:hover {
  background: var(--surface-2);
}

/* ========== Mobile Menu ========== */
.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(17, 24, 32, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
}
.mobile-menu.open {
  opacity: 1;
  visibility: visible;
}
.mobile-menu-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  padding: 32px;
  text-align: center;
}
.mobile-link {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 600;
  color: #FFFFFF;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: color var(--transition);
}
.mobile-link:hover {
  color: var(--accent);
}
.mobile-cta {
  margin-top: 16px;
}

/* ========== Hero ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
}
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, rgba(17, 24, 32, 0.85), rgba(17, 24, 32, 0.35) 60%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
  padding: 120px 0 80px;
}
.hero-eyebrow {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--accent);
  background: rgba(201, 151, 92, 0.16);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 24px;
  font-weight: 600;
}
.hero h1 {
  color: #FFFFFF;
  font-size: clamp(28px, 5vw, 64px);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 24px;
}
.hero-sub {
  font-size: 18px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 40px;
  max-width: 36em;
}
.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.hero-scroll-indicator {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 46px;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-radius: 14px;
  z-index: 2;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}
.hero-scroll-indicator::after {
  content: '';
  width: 4px;
  height: 8px;
  background: var(--accent);
  border-radius: 4px;
  animation: scroll-dot 2s ease infinite;
}
@keyframes scroll-dot {
  0% { transform: translateY(0); opacity: 1; }
  70% { transform: translateY(12px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}

/* ========== Features / Edit List ========== */
.features-section {
  background: var(--bg);
}
.features-layout {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 64px;
  align-items: start;
}
.features-head {
  position: sticky;
  top: 120px;
}
.features-head h2 {
  font-size: clamp(24px, 4vw, 40px);
  margin-bottom: 16px;
}
.features-head p {
  color: var(--text-2);
  max-width: 30em;
}
.feature-list {
  border-top: 1px solid var(--line);
}
.feature-row {
  display: grid;
  grid-template-columns: 72px 1fr 44px;
  gap: 16px;
  align-items: center;
  padding: 28px 20px;
  border-bottom: 1px solid var(--line);
  transition: background var(--transition), padding-left var(--transition);
}
.feature-row:hover {
  background: var(--surface);
  padding-left: 28px;
  box-shadow: var(--shadow);
  border-radius: var(--radius);
}
.feature-row .num {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
}
.feature-row .feature-title {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 6px;
}
.feature-row .feature-desc {
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.7;
  max-width: 36em;
}
.feature-row .feature-arrow {
  font-size: 22px;
  color: var(--text-3);
  transition: color var(--transition), transform var(--transition);
}
.feature-row:hover .feature-arrow {
  color: var(--accent);
  transform: translateX(4px);
}

/* ========== Demo ========== */
.demo-layout {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 72px;
  align-items: center;
}
.demo-visual {
  position: relative;
  margin-top: 20px;
}
.browser-frame {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--line);
  overflow: hidden;
}
.browser-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--line);
}
.browser-bar .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.browser-bar .dot:nth-child(1) { background: #E57A77; }
.browser-bar .dot:nth-child(2) { background: #E0B368; }
.browser-bar .dot:nth-child(3) { background: #6FBF8A; }
.browser-frame img {
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 16 / 10;
}
.demo-steps {
  display: flex;
  flex-direction: column;
  gap: 36px;
  margin-top: 28px;
}
.demo-step {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}
.demo-step .step-num {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.demo-step h3 {
  font-size: 18px;
  margin-bottom: 6px;
}
.demo-step p {
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.7;
}

/* ========== Proof ========== */
.proof-layout {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 72px;
  align-items: center;
}
.stats-column {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.stat-item {
  padding: 36px 8px;
  border-bottom: 1px solid var(--line);
  transition: background var(--transition);
}
.stat-item:last-child {
  border-bottom: none;
}
.stat-item:hover {
  background: var(--surface);
}
.stat-num {
  display: block;
  font-family: var(--font-serif);
  font-size: clamp(40px, 6vw, 80px);
  font-weight: 700;
  color: var(--primary);
  line-height: 1.1;
}
.stat-label {
  font-size: 14px;
  color: var(--text-2);
  margin-top: 8px;
  letter-spacing: 0.04em;
}
.quotes-column {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.quote-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 36px;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}
.quote-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.quote-card::before {
  content: '\201C';
  font-family: var(--font-serif);
  font-size: 64px;
  color: var(--accent);
  line-height: 0.4;
  display: block;
  margin-bottom: 18px;
  margin-top: 12px;
}
.quote-card p {
  font-size: 15px;
  color: var(--text);
  line-height: 1.8;
  margin-bottom: 20px;
}
.quote-card footer {
  display: flex;
  align-items: center;
  gap: 14px;
}
.quote-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  border: 2px solid var(--accent);
}
.quote-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.quote-card cite {
  font-style: normal;
  font-weight: 600;
  font-size: 14px;
}
.quote-card cite span {
  display: block;
  font-weight: 400;
  font-size: 13px;
  color: var(--text-3);
  margin-top: 2px;
}

/* ========== Pricing / Membership ========== */
.pricing-grid {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 48px;
  align-items: stretch;
}
.pricing-compare {
  background: var(--surface-2);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.pricing-compare h3 {
  font-size: 20px;
  margin-bottom: 28px;
}
.compare-list {
  display: flex;
  flex-direction: column;
}
.compare-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 4px;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}
.compare-list li:last-child {
  border-bottom: none;
}
.compare-list .check {
  color: var(--primary);
  font-size: 18px;
  font-weight: 700;
}
.compare-list .dash {
  color: var(--text-3);
  font-size: 18px;
}
.pricing-card {
  background: var(--surface);
  border: 1px solid var(--primary);
  border-top: 4px solid var(--accent);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-lg);
  position: relative;
  display: flex;
  flex-direction: column;
}
.pricing-tag {
  position: absolute;
  top: -16px;
  left: 32px;
  background: var(--accent);
  color: var(--text);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 10px rgba(201, 151, 92, 0.35);
}
.pricing-card h3 {
  font-size: 22px;
  margin-bottom: 8px;
}
.pricing-card .pricing-desc {
  font-size: 14px;
  color: var(--text-2);
  margin-bottom: 24px;
}
.pricing-price {
  font-family: var(--font-serif);
  font-size: 34px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 24px;
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.pricing-price small {
  font-size: 14px;
  color: var(--text-3);
  font-weight: 400;
}
.pricing-card ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
}
.pricing-card ul li {
  position: relative;
  padding-left: 24px;
  font-size: 14px;
  color: var(--text-2);
}
.pricing-card ul li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
}
.pricing-card .btn {
  margin-top: auto;
}

/* ========== News ========== */
.news-section {
  background: var(--surface);
}
.news-list {
  border-top: 1px solid var(--line);
  margin-top: 8px;
}
.news-item {
  display: grid;
  grid-template-columns: 140px 7fr 44px;
  gap: 24px;
  align-items: center;
  padding: 24px 16px;
  border-bottom: 1px solid var(--line);
  transition: background var(--transition), padding-left var(--transition);
}
.news-item:hover {
  background: var(--bg);
  padding-left: 24px;
}
.news-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.news-date {
  font-size: 14px;
  color: var(--text-3);
  font-variant-numeric: tabular-nums;
}
.news-category {
  display: inline-block;
  width: fit-content;
  font-size: 12px;
  color: var(--primary);
  background: var(--primary-soft);
  padding: 2px 10px;
  border-radius: var(--radius-pill);
}
.news-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--transition);
}
.news-item:hover .news-title {
  color: var(--primary);
}
.news-summary {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.6;
  margin-top: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-arrow {
  font-size: 22px;
  color: var(--text-3);
  transition: color var(--transition), transform var(--transition);
}
.news-item:hover .news-arrow {
  color: var(--accent);
  transform: translateX(4px);
}
.news-empty {
  padding: 64px 24px;
  text-align: center;
  color: var(--text-3);
  font-size: 15px;
  border-bottom: 1px solid var(--line);
  background: var(--surface-2);
  border-radius: var(--radius);
  margin-top: 24px;
}

/* ========== FAQ ========== */
.faq-section {
  background: var(--bg);
}
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition);
}
.faq-item.open {
  box-shadow: var(--shadow);
  border-color: rgba(201, 151, 92, 0.4);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 28px;
  text-align: left;
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  transition: color var(--transition);
}
.faq-question:hover {
  color: var(--primary);
}
.faq-icon {
  position: relative;
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--accent-soft);
  transition: background var(--transition), transform var(--transition);
}
.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
  transform: translate(-50%, -50%);
  transition: transform var(--transition);
}
.faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}
.faq-item.open .faq-icon {
  background: var(--accent);
}
.faq-item.open .faq-icon::before {
  transform: translate(-50%, -50%) rotate(45deg);
}
.faq-item.open .faq-icon::after {
  transform: translate(-50%, -50%) rotate(-45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 28px 24px;
}
.faq-answer p {
  color: var(--text-2);
  font-size: 15px;
  line-height: 1.75;
  border-top: 1px dashed var(--line);
  padding-top: 16px;
}

/* ========== CTA ========== */
.cta-section {
  background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
  position: relative;
  text-align: center;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(17, 24, 32, 0.78);
}
.cta-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
  margin: 0 auto;
  padding: 96px 24px;
}
.cta-content h2 {
  color: #FFFFFF;
  font-size: clamp(24px, 4vw, 40px);
  margin-bottom: 16px;
}
.cta-content p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 16px;
  margin-bottom: 36px;
  line-height: 1.75;
}
.cta-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}

/* ========== Footer ========== */
.site-footer {
  background: #111820;
  color: #C9C4BB;
  padding: 72px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 56px;
}
.footer-brand .brand-icon {
  background: var(--accent);
  color: var(--text);
}
.footer-brand .brand-text {
  color: #FFFFFF;
  font-size: 18px;
}
.footer-brand p {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: #A5A096;
  max-width: 28em;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #FFFFFF;
  margin-bottom: 20px;
  letter-spacing: 0.04em;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col ul a {
  font-size: 14px;
  color: #C9C4BB;
  transition: color var(--transition);
}
.footer-col ul a:hover {
  color: var(--accent);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: #8C8F96;
}
.footer-bottom a {
  color: #C9C4BB;
}
.footer-bottom a:hover {
  color: var(--accent);
}

/* ========== Floating CTA ========== */
.floating-cta {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 999;
  padding: 14px 28px;
  background: var(--primary);
  color: #FFFFFF;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 15px;
  box-shadow: 0 8px 24px rgba(30, 90, 79, 0.35);
  opacity: 0;
  transform: translateY(24px);
  visibility: hidden;
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
}
.floating-cta:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  color: #FFFFFF;
}
.floating-cta.visible {
  opacity: 1;
  transform: translateY(0);
  visibility: visible;
}

/* ========== Reveal Animation ========== */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .features-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .features-head {
    position: static;
  }
  .demo-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .proof-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 768px) {
  .site-header {
    height: 60px;
  }
  .main-nav {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .header-actions .btn {
    display: none;
  }
  .hero {
    min-height: 90vh;
  }
  .hero-content {
    padding: 100px 0 60px;
  }
  .hero-sub {
    font-size: 16px;
  }
  .feature-row {
    grid-template-columns: 56px 1fr 32px;
    padding: 22px 12px;
  }
  .feature-row:hover {
    padding-left: 18px;
  }
  .quote-card {
    padding: 24px;
  }
  .news-item {
    grid-template-columns: 110px 1fr 34px;
    gap: 16px;
    padding: 20px 12px;
  }
  .news-item:hover {
    padding-left: 16px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    justify-content: center;
  }
  .floating-cta {
    right: 16px;
    bottom: 16px;
    padding: 12px 22px;
    font-size: 14px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .brand-text {
    font-size: 15px;
  }
  .hero-buttons .btn {
    width: 100%;
  }
  .features-layout {
    gap: 32px;
  }
  .feature-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .feature-row .feature-arrow {
    display: none;
  }
  .demo-layout {
    gap: 36px;
  }
  .demo-step {
    flex-direction: column;
    gap: 12px;
  }
  .stats-column {
    border-top: none;
  }
  .stat-item {
    padding: 24px 4px;
  }
  .pricing-compare,
  .pricing-card {
    padding: 28px 20px;
  }
  .news-item {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .news-arrow {
    display: none;
  }
  .news-meta {
    flex-direction: row;
    align-items: center;
  }
  .faq-question {
    padding: 18px 20px;
    font-size: 15px;
  }
  .faq-item.open .faq-answer {
    padding: 0 20px 20px;
  }
  .cta-content {
    padding: 72px 16px;
  }
  .floating-cta {
    left: 16px;
    right: 16px;
    bottom: 16px;
    border-radius: var(--radius-pill);
    text-align: center;
    justify-content: center;
  }
  body {
    padding-bottom: 0;
  }
}

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

/* roulang page: category1 */
:root {
  --bg: #F5F1E9;
  --surface: #FFFFFF;
  --surface-2: #EFE9DF;
  --ink: #111820;
  --ink-2: #5A5E66;
  --ink-3: #8C8F96;
  --primary: #1E5A4F;
  --primary-hover: #153C36;
  --primary-soft: rgba(30, 90, 79, 0.12);
  --accent: #C9975C;
  --accent-hover: #B0804A;
  --accent-soft: rgba(201, 151, 92, 0.18);
  --line: #E3DAC9;
  --shadow: 0 10px 30px rgba(17, 24, 32, 0.06);
  --shadow-lg: 0 18px 44px rgba(17, 24, 32, 0.12);
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 24px;
  --radius-full: 999px;
  --container: 1200px;
  --space-section: clamp(64px, 8vw, 112px);
  --header-h: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--accent);
  color: var(--ink);
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

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

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

section {
  padding: var(--space-section) 0;
}

/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(17, 24, 32, 0.25);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.site-header.scrolled {
  background: rgba(245, 241, 233, 0.92);
  border-bottom-color: var(--line);
  box-shadow: var(--shadow);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  background: var(--primary);
  color: #fff;
  font-family: "Noto Serif SC", "Source Han Serif SC", STZhongsong, serif;
  font-size: 18px;
  font-weight: 700;
  border-radius: 9px;
  box-shadow: 0 4px 12px rgba(30, 90, 79, 0.25);
}

.brand-text {
  font-family: "Noto Serif SC", "Source Han Serif SC", STZhongsong, serif;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
  transition: color 0.3s ease;
}

.site-header.scrolled .brand-text {
  color: var(--ink);
}

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

.main-nav .nav-link {
  font-size: 15px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  padding: 6px 2px;
  position: relative;
  transition: color 0.3s ease;
}

.site-header.scrolled .main-nav .nav-link {
  color: var(--ink-2);
}

.main-nav .nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

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

.main-nav .nav-link.active {
  color: #fff;
  font-weight: 600;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  transition: all 0.25s ease;
  border: 1px solid transparent;
}

.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

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

.btn-primary:hover {
  background: var(--primary-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(30, 90, 79, 0.25);
}

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

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

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
  color: #fff;
}

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

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

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

.btn-accent:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(201, 151, 92, 0.3);
}

.btn-sm {
  padding: 9px 18px;
  font-size: 14px;
}

.btn-lg {
  padding: 15px 32px;
  font-size: 16px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: var(--radius-sm);
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all 0.3s ease;
}

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

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

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

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

/* ===== Page Banner ===== */
.page-banner {
  min-height: 320px;
  display: flex;
  align-items: center;
  background: linear-gradient(90deg, rgba(17, 24, 32, 0.88), rgba(17, 24, 32, 0.45) 62%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding: calc(var(--header-h) + 48px) 0 64px;
  color: #fff;
}

.banner-inner {
  max-width: 640px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 18px;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.8);
}

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

.breadcrumb .sep {
  opacity: 0.5;
}

.page-banner h1 {
  font-family: "Noto Serif SC", "Source Han Serif SC", STZhongsong, serif;
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 16px;
  letter-spacing: 0.01em;
}

.banner-lead {
  font-size: 17px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.85);
  max-width: 540px;
}

/* ===== Eyebrow & Section Title ===== */
.eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 12px;
  background: var(--primary-soft);
  padding: 4px 14px;
  border-radius: var(--radius-full);
}

.section-head {
  margin-bottom: 48px;
  max-width: 680px;
}

.section-head h2 {
  font-family: "Noto Serif SC", "Source Han Serif SC", STZhongsong, serif;
  font-size: clamp(24px, 4vw, 38px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--ink);
  margin-bottom: 14px;
}

.section-head p {
  color: var(--ink-2);
  font-size: 16px;
  max-width: 42em;
}

.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

/* ===== Intro Section ===== */
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.intro-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.intro-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 320px;
}

.intro-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 70%, rgba(17, 24, 32, 0.25));
  pointer-events: none;
}

.intro-text .eyebrow {
  margin-bottom: 16px;
}

.intro-text h2 {
  font-family: "Noto Serif SC", "Source Han Serif SC", STZhongsong, serif;
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1.3;
  margin-bottom: 18px;
}

.intro-text p {
  color: var(--ink-2);
  margin-bottom: 16px;
  max-width: 46em;
}

.intro-list {
  margin-top: 24px;
  display: grid;
  gap: 12px;
}

.intro-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  list-style: none;
  font-size: 15px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.intro-list li:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
}

.intro-list .check {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  margin-top: 2px;
}

/* ===== Steps Section ===== */
.steps-section {
  background: var(--surface-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.steps-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

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

.steps-visual img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.steps-list {
  display: grid;
  gap: 0;
}

.step-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 20px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
  transition: padding-left 0.3s ease;
}

.step-item:first-child {
  padding-top: 0;
}

.step-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.step-item:hover {
  padding-left: 8px;
}

.step-num {
  font-family: "Noto Serif SC", "Source Han Serif SC", STZhongsong, serif;
  font-size: 40px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  padding-top: 4px;
}

.step-body h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}

.step-body p {
  color: var(--ink-2);
  font-size: 15px;
}

/* ===== Scenario Cards ===== */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

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

.scenario-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.scenario-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.scenario-body {
  padding: 24px;
}

.scenario-body .tag {
  display: inline-block;
  font-size: 12px;
  color: var(--primary);
  background: var(--primary-soft);
  border-radius: var(--radius-full);
  padding: 3px 12px;
  margin-bottom: 12px;
  font-weight: 500;
}

.scenario-body h3 {
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 8px;
}

.scenario-body p {
  color: var(--ink-2);
  font-size: 15px;
}

/* ===== Quote / Testimonial ===== */
.quote-section {
  background: var(--surface);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.quote-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 56px;
  align-items: center;
}

.quote-stats {
  display: grid;
  gap: 8px;
}

.stat-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.stat-row:last-child {
  border-bottom: none;
}

.stat-num {
  font-family: "Noto Serif SC", "Source Han Serif SC", STZhongsong, serif;
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  color: var(--primary);
  line-height: 1.1;
}

.stat-label {
  color: var(--ink-2);
  font-size: 14px;
  text-align: right;
}

.quote-card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 36px;
  position: relative;
}

.quote-mark {
  font-family: "Noto Serif SC", "Source Han Serif SC", STZhongsong, serif;
  font-size: 72px;
  color: var(--accent);
  line-height: 0.6;
  display: block;
  margin-bottom: 20px;
  opacity: 0.6;
}

.quote-card blockquote {
  font-size: 17px;
  line-height: 1.8;
  color: var(--ink);
  margin-bottom: 24px;
}

.quote-card figcaption {
  display: flex;
  align-items: center;
  gap: 14px;
}

.quote-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--accent);
  flex-shrink: 0;
}

.quote-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.quote-card cite {
  font-style: normal;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.quote-card cite span {
  display: block;
  font-size: 13px;
  font-weight: 400;
  color: var(--ink-3);
}

/* ===== Safety Section ===== */
.safety-section {
  background: linear-gradient(135deg, #111820 0%, #1e2b33 100%);
  color: #fff;
}

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

.safety-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: background 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}

.safety-card:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(201, 151, 92, 0.45);
  transform: translateY(-3px);
}

.safety-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
}

.safety-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
}

.safety-card p {
  color: rgba(255, 255, 255, 0.72);
  font-size: 15px;
}

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

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

.safety-section .eyebrow {
  background: rgba(255, 255, 255, 0.1);
  color: var(--accent);
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: grid;
  gap: 16px;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.faq-item:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
}

.faq-item.active {
  border-color: var(--primary);
  box-shadow: var(--shadow);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 24px;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  background: transparent;
  transition: color 0.2s ease;
}

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

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 400;
  transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--accent);
  color: #fff;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-answer-inner {
  padding: 0 24px 22px;
  font-size: 15px;
  color: var(--ink-2);
  line-height: 1.75;
}

/* ===== CTA Section ===== */
.cta-section {
  background: var(--surface);
  border-top: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}

.cta-card {
  background: linear-gradient(120deg, var(--primary) 0%, #265347 100%);
  border-radius: var(--radius-lg);
  padding: clamp(40px, 6vw, 72px);
  color: #fff;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  align-items: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.cta-card::before {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: rgba(201, 151, 92, 0.18);
  pointer-events: none;
}

.cta-card::after {
  content: "";
  position: absolute;
  right: 40px;
  bottom: -80px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  pointer-events: none;
}

.cta-text h2 {
  font-family: "Noto Serif SC", "Source Han Serif SC", STZhongsong, serif;
  font-size: clamp(22px, 3.2vw, 34px);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 12px;
}

.cta-text p {
  color: rgba(255, 255, 255, 0.82);
  font-size: 16px;
  max-width: 36em;
}

.cta-actions {
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: flex-start;
  position: relative;
  z-index: 1;
}

.cta-actions .btn {
  min-width: 220px;
}

/* ===== Footer ===== */
.site-footer {
  background: #111820;
  color: #C9C4BB;
  padding: 64px 0 0;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

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

.footer-brand .brand-text {
  color: #fff;
  font-size: 20px;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.62);
  line-height: 1.7;
  margin-top: 12px;
  max-width: 28em;
}

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

.footer-col a {
  display: block;
  color: rgba(255, 255, 255, 0.66);
  padding: 5px 0;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.footer-col a:hover {
  color: var(--accent);
  padding-left: 6px;
}

.footer-col p {
  color: rgba(255, 255, 255, 0.66);
  margin: 5px 0;
}

.footer-bottom {
  padding: 22px 0;
  text-align: center;
  color: rgba(255, 255, 255, 0.42);
  font-size: 13px;
}

/* ===== Reveal Animation ===== */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

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

/* ===== Focus / Accessibility ===== */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .intro-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .intro-media img {
    min-height: 260px;
  }

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

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

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

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

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

  .cta-card {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  :root {
    --header-h: 60px;
  }

  .main-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    background: rgba(17, 24, 32, 0.96);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    gap: 12px;
    padding: 60px 24px;
    transform: translateX(100%);
    transition: transform 0.35s ease;
    z-index: 998;
  }

  .main-nav.open {
    transform: translateX(0);
  }

  .main-nav .nav-link {
    font-family: "Noto Serif SC", "Source Han Serif SC", STZhongsong, serif;
    font-size: 26px;
    color: #fff !important;
    padding: 14px 0;
  }

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

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

  .nav-toggle {
    display: flex;
    z-index: 999;
    position: relative;
  }

  .site-header .header-inner {
    position: relative;
  }

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

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

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

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

  .page-banner {
    min-height: 280px;
  }
}

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

  .step-item {
    grid-template-columns: 48px 1fr;
    gap: 14px;
  }

  .step-num {
    font-size: 32px;
  }

  .quote-card {
    padding: 24px;
  }

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

  .stat-row {
    flex-direction: column;
    gap: 4px;
  }

  .stat-label {
    text-align: left;
  }
}

/* ===== Reduced Motion ===== */
@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;
  }

  .main-nav {
    transition: none;
  }
}

/* roulang page: article */
:root {
  --bg: #F5F1E9;
  --surface: #FFFFFF;
  --surface-2: #EFE9DF;
  --text: #111820;
  --text-2: #5A5E66;
  --text-3: #8C8F96;
  --primary: #1E5A4F;
  --primary-hover: #153C36;
  --primary-soft: rgba(30, 90, 79, 0.12);
  --accent: #C9975C;
  --accent-hover: #B0804A;
  --accent-soft: rgba(201, 151, 92, 0.18);
  --line: #E3DAC9;
  --shadow: 0 10px 30px rgba(17, 24, 32, 0.06);
  --shadow-lg: 0 18px 44px rgba(17, 24, 32, 0.12);
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'STZhongsong', serif;
  --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'sans-serif';
  --container: 1200px;
  --spacer-section: clamp(72px, 9vw, 120px);
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  background-color: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease, background-color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
  color: inherit;
}
::selection {
  background: var(--accent);
  color: var(--text);
}
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
section {
  scroll-margin-top: 90px;
}
.eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 16px;
}
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  line-height: 1.25;
  font-weight: 700;
}
.section-head {
  max-width: 42em;
  margin-bottom: 48px;
}
.section-head h2 {
  font-size: clamp(24px, 4vw, 40px);
  margin-bottom: 16px;
}
.section-head p {
  color: var(--text-2);
  max-width: 38em;
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 72px;
  z-index: 1000;
  display: flex;
  align-items: center;
  background: rgba(17, 24, 32, 0.22);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.site-header.scrolled {
  background: rgba(245, 241, 233, 0.92);
  border-bottom-color: var(--line);
  box-shadow: 0 6px 24px rgba(17, 24, 32, 0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  color: #FFFFFF;
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.02em;
  transition: color 0.3s ease;
}
.site-header.scrolled .brand {
  color: var(--text);
}
.brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--primary);
  color: #FFFFFF;
  font-size: 18px;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(30, 90, 79, 0.24);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-link {
  position: relative;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.85);
  padding: 8px 2px;
  letter-spacing: 0.01em;
  white-space: nowrap;
  transition: color 0.25s ease;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  border-radius: 999px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.28s ease;
}
.nav-link:hover {
  color: #FFFFFF;
}
.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}
.nav-link.active {
  color: #FFFFFF;
}
.site-header.scrolled .nav-link {
  color: var(--text-2);
}
.site-header.scrolled .nav-link:hover,
.site-header.scrolled .nav-link.active {
  color: var(--primary);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  max-width: 100%;
  border-radius: var(--radius-pill);
  padding: 12px 28px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease, transform 0.2s ease, box-shadow 0.25s ease;
}
.btn:active {
  transform: translateY(0);
}
.btn-primary {
  background: var(--primary);
  color: #FFFFFF;
  box-shadow: 0 6px 18px rgba(30, 90, 79, 0.22);
}
.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(30, 90, 79, 0.28);
}
.btn-accent {
  background: var(--accent);
  color: #FFFFFF;
  box-shadow: 0 6px 18px rgba(201, 151, 92, 0.25);
}
.btn-accent:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(201, 151, 92, 0.3);
}
.btn-outline-light {
  border-color: rgba(255, 255, 255, 0.6);
  color: #FFFFFF;
  background: transparent;
}
.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #FFFFFF;
}
.btn-sm {
  padding: 8px 20px;
  font-size: 14px;
}
.btn-lg {
  padding: 15px 40px;
  font-size: 17px;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  align-items: center;
  background: rgba(255, 255, 255, 0.1);
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: #FFFFFF;
  border-radius: 999px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.site-header.scrolled .nav-toggle span {
  background: var(--text);
}

/* ---------- Page Hero ---------- */
.page-hero {
  position: relative;
  min-height: 300px;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
  padding-top: 120px;
  padding-bottom: 56px;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(17, 24, 32, 0.82), rgba(17, 24, 32, 0.45) 65%, rgba(17, 24, 32, 0.2));
  z-index: 1;
}
.page-hero-inner {
  position: relative;
  z-index: 2;
  max-width: 900px;
  width: 100%;
  padding-top: 24px;
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 18px;
}
.breadcrumb a {
  color: rgba(255, 255, 255, 0.82);
}
.breadcrumb a:hover {
  color: #FFFFFF;
}
.breadcrumb .divider {
  color: rgba(255, 255, 255, 0.4);
}
.breadcrumb .current {
  color: rgba(255, 255, 255, 0.95);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 360px;
}
.page-hero h1 {
  color: #FFFFFF;
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1.22;
  margin-bottom: 16px;
  max-width: 760px;
  text-shadow: 0 2px 16px rgba(17, 24, 32, 0.2);
}
.page-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
}
.page-hero-meta i {
  margin-right: 6px;
  color: var(--accent);
}

/* ---------- Article Main ---------- */
.article-main {
  padding-top: 56px;
  padding-bottom: 32px;
}
.article-wrap {
  max-width: 860px;
}
.article-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow);
  margin-bottom: 56px;
}
.article-prose {
  color: var(--text);
  font-size: 16px;
  line-height: 1.85;
}
.article-prose > * + * {
  margin-top: 1.4em;
}
.article-prose h1,
.article-prose h2 {
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.3;
  margin-top: 1.6em;
  margin-bottom: 0.6em;
  color: var(--text);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.article-prose h3 {
  font-size: clamp(18px, 2.4vw, 24px);
  margin-top: 1.5em;
  margin-bottom: 0.5em;
  color: var(--text);
}
.article-prose h4 {
  font-size: 18px;
  margin-top: 1.4em;
  margin-bottom: 0.4em;
  color: var(--text);
}
.article-prose p {
  color: var(--text-2);
  line-height: 1.9;
}
.article-prose ul,
.article-prose ol {
  padding-left: 1.5em;
  color: var(--text-2);
}
.article-prose li {
  margin-top: 0.5em;
}
.article-prose li::marker {
  color: var(--accent);
}
.article-prose blockquote {
  border-left: 4px solid var(--accent);
  background: var(--surface-2);
  padding: 20px 24px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-2);
  font-size: 16px;
  line-height: 1.8;
}
.article-prose a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.article-prose a:hover {
  color: var(--primary-hover);
}
.article-prose code {
  background: var(--surface-2);
  border-radius: 6px;
  padding: 2px 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 14px;
}
.article-prose pre {
  background: var(--text);
  color: #F5F1E9;
  border-radius: var(--radius);
  padding: 24px;
  overflow-x: auto;
  line-height: 1.7;
  font-size: 14px;
}
.article-prose pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}
.article-prose img {
  border-radius: var(--radius);
  margin: 32px 0;
}
.article-prose table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1.4em;
  font-size: 15px;
}
.article-prose th {
  background: var(--surface-2);
  text-align: left;
  padding: 12px 16px;
  font-weight: 600;
}
.article-prose td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  color: var(--text-2);
}
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 13px;
  font-weight: 500;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
}
.tag:hover {
  background: var(--primary);
  color: #FFFFFF;
}
.article-empty {
  text-align: center;
  padding: 48px 24px;
}
.article-empty i {
  font-size: 44px;
  color: var(--text-3);
  margin-bottom: 16px;
}
.article-empty h2 {
  font-size: 24px;
  margin-bottom: 8px;
}
.article-empty p {
  color: var(--text-2);
  margin-bottom: 24px;
}

/* ---------- Related Section ---------- */
.related-section {
  padding: 64px 0 72px;
  background: var(--bg);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}
.related-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: block;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.related-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.related-card-img {
  height: 170px;
  overflow: hidden;
  background: var(--surface-2);
}
.related-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.related-card:hover .related-card-img img {
  transform: scale(1.04);
}
.related-card-body {
  padding: 20px 22px 24px;
}
.related-card-body h3 {
  font-size: 17px;
  line-height: 1.45;
  margin-bottom: 8px;
  color: var(--text);
  font-family: var(--font-serif);
}
.related-card-body p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card-body .meta {
  margin-top: 14px;
  font-size: 13px;
  color: var(--text-3);
  display: flex;
  align-items: center;
  gap: 10px;
}
.related-back {
  text-align: center;
}

/* ---------- CTA Band ---------- */
.cta-band {
  position: relative;
  background-size: cover;
  background-position: center;
  padding: 72px 0;
  overflow: hidden;
}
.cta-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(17, 24, 32, 0.88), rgba(30, 90, 79, 0.8));
  z-index: 1;
}
.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  color: #FFFFFF;
  max-width: 680px;
  margin: 0 auto;
}
.cta-inner .eyebrow {
  color: var(--accent);
}
.cta-inner h2 {
  font-size: clamp(24px, 4vw, 40px);
  margin-bottom: 14px;
  color: #FFFFFF;
}
.cta-inner p {
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 28px;
}

/* ---------- Footer ---------- */
.site-footer {
  background: #111820;
  color: #C9C4BB;
  padding-top: 72px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 0.8fr 0.8fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .brand {
  color: #FFFFFF;
  font-size: 22px;
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: #A8A39A;
  margin-bottom: 20px;
  max-width: 30em;
}
.footer-quote {
  display: flex;
  align-items: center;
  gap: 14px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius);
  padding: 14px 18px;
  max-width: 300px;
}
.quote-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--accent);
  flex-shrink: 0;
}
.quote-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.footer-quote cite {
  font-style: normal;
  font-size: 14px;
  color: #FFFFFF;
  font-weight: 600;
}
.footer-quote cite span {
  display: block;
  font-size: 12px;
  color: #8C8F96;
  font-weight: 400;
  margin-top: 2px;
}
.footer-col h4 {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  color: #FFFFFF;
  margin-bottom: 20px;
  letter-spacing: 0.04em;
}
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-links a {
  font-size: 14px;
  color: #C9C4BB;
  transition: color 0.2s ease;
}
.footer-links a:hover {
  color: var(--accent);
}
.footer-contact {
  font-size: 14px;
  line-height: 2;
}
.footer-contact i {
  color: var(--accent);
  width: 20px;
  margin-right: 6px;
}
.footer-contact a {
  color: #C9C4BB;
}
.footer-contact a:hover {
  color: var(--accent);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 24px 0;
}
.footer-bottom .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: #8C8F96;
}
.footer-bottom a {
  color: #C9C4BB;
}
.footer-bottom a:hover {
  color: var(--accent);
}

/* ---------- Floating CTA ---------- */
.float-cta {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 999;
  opacity: 0;
  transform: translateY(24px);
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.float-cta.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* ---------- Motion & Media ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}
@media (max-width: 1024px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
  .main-nav {
    gap: 18px;
  }
}
@media (max-width: 768px) {
  .site-header {
    height: 60px;
  }
  .nav-toggle {
    display: flex;
  }
  .main-nav {
    position: fixed;
    inset: 0;
    background: rgba(17, 24, 32, 0.72);
    backdrop-filter: blur(22px);
    -webkit-backdrop-filter: blur(22px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 8px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    padding-bottom: 40px;
  }
  body.nav-open .main-nav {
    opacity: 1;
    pointer-events: auto;
  }
  .main-nav .nav-link {
    font-family: var(--font-serif);
    font-size: 28px;
    color: #FFFFFF;
    padding: 12px 8px;
  }
  .main-nav .nav-link::after {
    background: var(--accent);
  }
  .site-header.scrolled .main-nav .nav-link {
    color: #FFFFFF;
  }
  .site-header.scrolled .nav-link:hover,
  .site-header.scrolled .nav-link.active {
    color: #FFFFFF;
  }
  body.nav-open .nav-toggle span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  body.nav-open .nav-toggle span:nth-child(2) {
    opacity: 0;
  }
  body.nav-open .nav-toggle span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
  .page-hero {
    min-height: 260px;
    padding-top: 96px;
    padding-bottom: 40px;
  }
  .page-hero h1 {
    font-size: 26px;
  }
  .article-card {
    padding: 28px 24px;
  }
  .related-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .related-card-img {
    height: 200px;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .footer-bottom .container {
    justify-content: center;
    text-align: center;
  }
  .float-cta {
    right: 16px;
    bottom: 16px;
  }
}
@media (max-width: 520px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .brand-text {
    font-size: 18px;
  }
  .header-actions .btn {
    padding: 8px 16px;
    font-size: 13px;
  }
  .page-hero {
    min-height: 240px;
  }
  .page-hero-meta {
    gap: 12px;
  }
  .article-card {
    padding: 24px 16px;
  }
  .float-cta {
    left: 16px;
    right: 16px;
    bottom: 16px;
    transform: translateY(0);
    border-radius: var(--radius-pill);
  }
  .float-cta .btn {
    width: 100%;
  }
  body {
    padding-bottom: 0;
  }
}

/* roulang page: category2 */
:root {
            --bg: #F5F1E9;
            --surface: #FFFFFF;
            --surface-2: #EFE9DF;
            --text: #111820;
            --text-secondary: #5A5E66;
            --text-weak: #8C8F96;
            --primary: #1E5A4F;
            --primary-hover: #153C36;
            --primary-soft: rgba(30, 90, 79, 0.12);
            --accent: #C9975C;
            --accent-hover: #B0804A;
            --accent-soft: rgba(201, 151, 92, 0.18);
            --line: #E3DAC9;
            --shadow: 0 10px 30px rgba(17, 24, 32, 0.06);
            --shadow-lg: 0 18px 44px rgba(17, 24, 32, 0.12);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --radius-pill: 999px;
            --font-display: "Noto Serif SC", "Source Han Serif SC", "STZhongsong", serif;
            --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --container: 1200px;
            --spacer: clamp(64px, 8vw, 112px);
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s;
        }

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

        p {
            color: var(--text-secondary);
            line-height: 1.75;
        }

        h1,
        h2,
        h3,
        h4 {
            font-family: var(--font-display);
            line-height: 1.2;
            font-weight: 700;
            color: var(--text);
        }

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

        ::selection {
            background: var(--accent);
            color: var(--text);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-pill);
            font-size: 15px;
            font-weight: 600;
            border: 2px solid transparent;
            cursor: pointer;
            transition: all 0.3s ease;
            font-family: var(--font-body);
            white-space: nowrap;
        }

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

        .btn-primary:hover {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow);
        }

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

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

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

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

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

        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
        }

        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }

        /* 标签 */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 500;
            background: var(--primary-soft);
            color: var(--primary);
            letter-spacing: 0.02em;
        }

        .badge-accent {
            background: var(--accent-soft);
            color: var(--accent-hover);
        }

        /* ===== Header 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 72px;
            background: rgba(17, 24, 32, 0.25);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
            transition: all 0.3s ease;
        }

        .site-header .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 24px;
        }

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

        .brand-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--accent);
            color: var(--text);
            font-family: var(--font-display);
            font-size: 20px;
            font-weight: 700;
        }

        .brand-text {
            font-family: var(--font-display);
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.02em;
            transition: color 0.3s;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-link {
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
            border-radius: var(--radius-pill);
            transition: background 0.25s, color 0.25s;
            position: relative;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }

        .nav-link.active {
            color: #fff;
            background: rgba(255, 255, 255, 0.14);
        }

        .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

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

        .header-actions .btn:hover {
            background: var(--primary-hover);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 42px;
            height: 42px;
            padding: 10px;
            background: transparent;
            border: none;
            cursor: pointer;
            border-radius: 8px;
            transition: background 0.2s;
        }

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

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

        .site-header.scrolled {
            background: rgba(245, 241, 233, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom-color: var(--line);
            box-shadow: var(--shadow);
        }

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

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

        .site-header.scrolled .nav-link:hover {
            color: var(--text);
            background: rgba(30, 90, 79, 0.08);
        }

        .site-header.scrolled .nav-link.active {
            color: var(--primary);
            background: var(--primary-soft);
        }

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

        .site-header.open {
            background: rgba(17, 24, 32, 0.95) !important;
        }

        .site-header.open .brand-text {
            color: #fff !important;
        }

        .site-header.open .nav-toggle span {
            background: #fff !important;
        }

        /* 移动端全屏菜单 */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 999;
            background: rgba(17, 24, 32, 0.97);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 20px;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s;
        }

        .mobile-menu.active {
            opacity: 1;
            visibility: visible;
        }

        .mobile-menu a {
            font-family: var(--font-display);
            font-size: 28px;
            color: rgba(255, 255, 255, 0.85);
            padding: 8px 24px;
            border-radius: 12px;
            transition: background 0.25s, color 0.25s;
        }

        .mobile-menu a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        .mobile-menu a.active {
            color: var(--accent);
        }

        .mobile-menu .btn {
            margin-top: 18px;
            background: var(--primary);
            color: #fff;
            font-size: 16px;
        }

        /* ===== 页面Banner ===== */
        .page-hero {
            position: relative;
            min-height: 300px;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            padding: 120px 0 64px;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(17, 24, 32, 0.88), rgba(17, 24, 32, 0.45) 65%, rgba(17, 24, 32, 0.2));
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
            max-width: 720px;
            margin-left: min(calc((100vw - var(--container)) / 2 + 24px), 24px);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: color 0.25s;
        }

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

        .breadcrumb .sep {
            opacity: 0.5;
        }

        .page-hero h1 {
            font-size: clamp(32px, 6vw, 54px);
            color: #fff;
            margin-bottom: 16px;
            font-weight: 700;
        }

        .page-hero .lead {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 540px;
            line-height: 1.7;
        }

        /* ===== Section 通用 ===== */
        .section {
            padding: var(--spacer) 0;
        }

        .section-alt {
            background: var(--surface-2);
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 32px;
            margin-bottom: 48px;
            flex-wrap: wrap;
        }

        .section-head .left {
            max-width: 560px;
        }

        .eyebrow {
            display: inline-block;
            font-size: 12px;
            letter-spacing: 0.16em;
            text-transform: uppercase;
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 12px;
        }

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

        .section-head h2 {
            font-size: clamp(24px, 4vw, 40px);
            line-height: 1.2;
            margin-bottom: 12px;
        }

        .section-head .desc {
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.7;
            max-width: 42em;
        }

        /* ===== 分类介绍 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
        }

        .intro-content .eyebrow {
            margin-bottom: 16px;
        }

        .intro-content h2 {
            font-size: clamp(24px, 4vw, 38px);
            margin-bottom: 20px;
            line-height: 1.25;
        }

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

        .intro-content .feature-list {
            list-style: none;
            margin-top: 24px;
        }

        .intro-content .feature-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 0;
            font-size: 15px;
            color: var(--text);
            border-bottom: 1px solid var(--line);
        }

        .intro-content .feature-list li:last-child {
            border-bottom: none;
        }

        .intro-content .feature-list li .check {
            color: var(--primary);
            font-weight: 700;
            font-size: 14px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: var(--primary-soft);
        }

        .intro-media {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .intro-media img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }

        .intro-media .media-caption {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 32px 24px 20px;
            background: linear-gradient(transparent, rgba(17, 24, 32, 0.75));
            color: #fff;
            font-size: 14px;
            font-weight: 500;
        }

        /* ===== 安全体系 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 24px;
        }

        .feature-card {
            grid-column: span 6;
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: 32px;
            border: 1px solid var(--line);
            box-shadow: var(--shadow);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--accent);
            opacity: 0;
            transition: opacity 0.3s;
        }

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

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-card:first-child {
            grid-column: span 7;
        }

        .feature-card:nth-child(2) {
            grid-column: span 5;
        }

        .feature-card:nth-child(3) {
            grid-column: span 5;
        }

        .feature-card:nth-child(4) {
            grid-column: span 7;
        }

        .feature-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--primary-soft);
            color: var(--primary);
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .feature-card h3 {
            font-size: 20px;
            margin-bottom: 8px;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .feature-card .tag-row {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-top: 16px;
        }

        .feature-card .tag-row .tag {
            background: var(--accent-soft);
            color: var(--accent-hover);
            font-size: 12px;
            padding: 3px 10px;
            border-radius: var(--radius-pill);
        }

        /* ===== 精选内容 ===== */
        .content-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .content-card {
            display: grid;
            grid-template-columns: 200px 1fr auto;
            gap: 32px;
            align-items: center;
            padding: 24px 0;
            border-bottom: 1px solid var(--line);
            transition: background 0.3s;
            border-radius: var(--radius-sm);
            padding-left: 12px;
            padding-right: 12px;
        }

        .content-card:last-child {
            border-bottom: none;
        }

        .content-card:hover {
            background: var(--surface);
            padding-left: 20px;
            padding-right: 20px;
            box-shadow: var(--shadow);
            border-color: transparent;
            border-radius: var(--radius-md);
        }

        .content-card .cover-wrap {
            width: 200px;
            height: 130px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            position: relative;
            flex-shrink: 0;
        }

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

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

        .content-card .card-body {
            min-width: 0;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-weak);
            margin-bottom: 6px;
        }

        .card-meta .badge {
            font-size: 12px;
            padding: 2px 10px;
        }

        .content-card h3 {
            font-size: 18px;
            margin-bottom: 6px;
            color: var(--text);
            transition: color 0.25s;
            line-height: 1.4;
        }

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

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

        .card-arrow {
            font-size: 24px;
            color: var(--text-weak);
            transition: transform 0.3s, color 0.3s;
            flex-shrink: 0;
        }

        .content-card:hover .card-arrow {
            color: var(--accent);
            transform: translateX(4px);
        }

        /* ===== 用户评价 ===== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .testimonial-stats {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }

        .stat-item {
            padding: 24px 0;
            border-bottom: 1px solid var(--line);
        }

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

        .stat-number {
            font-family: var(--font-display);
            font-size: clamp(40px, 6vw, 56px);
            font-weight: 700;
            color: var(--primary);
            line-height: 1.1;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 6px;
        }

        .testimonial-card {
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--line);
            box-shadow: var(--shadow);
            padding: 36px;
            position: relative;
        }

        .testimonial-card::before {
            content: "\201C";
            font-family: var(--font-display);
            font-size: 80px;
            color: var(--accent);
            position: absolute;
            top: 6px;
            left: 24px;
            line-height: 1;
            opacity: 0.8;
        }

        .testimonial-card blockquote {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            margin: 16px 0 24px;
            font-style: normal;
            position: relative;
            z-index: 1;
        }

        .testimonial-card figcaption {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .testimonial-card .avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            overflow: hidden;
        }

        .testimonial-card .avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .testimonial-card cite {
            font-style: normal;
            font-weight: 600;
            font-size: 15px;
            color: var(--text);
        }

        .testimonial-card cite span {
            display: block;
            font-weight: 400;
            font-size: 13px;
            color: var(--text-weak);
            margin-top: 2px;
        }

        /* ===== 安全流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }

        .step-item {
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--line);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow);
            position: relative;
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        .step-number {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--text);
            font-family: var(--font-display);
            font-size: 20px;
            font-weight: 700;
            margin: 0 auto 20px;
        }

        .step-item h3 {
            font-size: 18px;
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--line);
            overflow: hidden;
            transition: box-shadow 0.3s;
        }

        .faq-item:hover {
            box-shadow: var(--shadow);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 20px 24px;
            background: transparent;
            border: none;
            cursor: pointer;
            font-size: 16px;
            font-weight: 500;
            color: var(--text);
            text-align: left;
            font-family: var(--font-body);
            transition: background 0.25s;
            border-radius: var(--radius-md);
        }

        .faq-question:hover {
            background: var(--surface-2);
        }

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

        .faq-icon {
            position: relative;
            width: 18px;
            height: 18px;
            flex-shrink: 0;
            transition: transform 0.3s;
        }

        .faq-icon::before,
        .faq-icon::after {
            content: "";
            position: absolute;
            background: var(--accent);
            border-radius: 2px;
            transition: transform 0.3s;
        }

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

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

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: clamp(80px, 10vw, 120px) 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            text-align: center;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(17, 24, 32, 0.75);
        }

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

        .cta-section h2 {
            color: #fff;
            font-size: clamp(28px, 5vw, 48px);
            margin-bottom: 16px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 17px;
            max-width: 560px;
            margin: 0 auto 32px;
        }

        .cta-section .btn-primary {
            background: var(--accent);
            color: var(--text);
            border-color: transparent;
            font-weight: 700;
        }

        .cta-section .btn-primary:hover {
            background: var(--accent-hover);
            color: var(--text);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #111820;
            color: #C9C4BB;
            padding: 64px 0 0;
            font-size: 14px;
            line-height: 1.7;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

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

        .footer-brand .brand-icon {
            background: var(--accent);
            color: var(--text);
        }

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

        .footer-brand p {
            color: #8C8F96;
            font-size: 14px;
            margin-top: 12px;
            max-width: 280px;
            line-height: 1.7;
        }

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

        .footer-col a {
            display: block;
            color: #8C8F96;
            padding: 6px 0;
            transition: color 0.25s;
        }

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

        .footer-col p {
            color: #8C8F96;
            font-size: 14px;
            line-height: 1.8;
        }

        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            color: #5A5E66;
            font-size: 13px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            margin-top: 0;
        }

        .footer-bottom p {
            color: #5A5E66;
            font-size: 13px;
        }

        /* ===== 浮动CTA ===== */
        .float-cta {
            position: fixed;
            right: 24px;
            bottom: 24px;
            z-index: 998;
            opacity: 0;
            visibility: hidden;
            transform: translateY(24px);
            transition: opacity 0.4s ease, transform 0.4s ease, visibility 0.4s;
        }

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

        .float-cta a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 14px 24px;
            border-radius: var(--radius-pill);
            box-shadow: var(--shadow-lg);
            font-size: 14px;
            font-weight: 600;
            transition: background 0.3s, transform 0.2s;
        }

        .float-cta a:hover {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 滚动动画 ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(16px);
            transition: opacity 0.5s ease-out, transform 0.5s ease-out;
        }

        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

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

            .fade-up {
                opacity: 1;
                transform: none;
            }
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

            .features-grid .feature-card,
            .features-grid .feature-card:first-child,
            .features-grid .feature-card:nth-child(2),
            .features-grid .feature-card:nth-child(3),
            .features-grid .feature-card:nth-child(4) {
                grid-column: span 6;
            }

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

        @media (max-width: 768px) {
            .site-header {
                height: 60px;
            }

            .main-nav {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

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

            .mobile-menu.active {
                display: flex;
            }

            .page-hero {
                padding: 96px 0 48px;
                min-height: 240px;
            }

            .page-hero .container {
                margin-left: 0;
                padding: 0 24px;
            }

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

            .intro-media img {
                height: 280px;
            }

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

            .features-grid .feature-card,
            .features-grid .feature-card:first-child,
            .features-grid .feature-card:nth-child(2),
            .features-grid .feature-card:nth-child(3),
            .features-grid .feature-card:nth-child(4) {
                grid-column: span 1;
            }

            .content-card {
                grid-template-columns: 1fr;
                gap: 16px;
                padding: 20px 12px;
            }

            .content-card .cover-wrap {
                width: 100%;
                height: 180px;
            }

            .content-card:hover {
                padding-left: 12px;
                padding-right: 12px;
            }

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

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

            .section-head {
                flex-direction: column;
                align-items: flex-start;
            }

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

            .float-cta {
                left: 16px;
                right: 16px;
                bottom: 16px;
                text-align: center;
            }

            .float-cta a {
                width: 100%;
                justify-content: center;
            }

            body {
                padding-bottom: 70px;
            }

            .faq-question {
                font-size: 15px;
                padding: 16px 18px;
            }

            .faq-answer-inner {
                padding: 0 18px 16px;
                font-size: 14px;
            }
        }

        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }

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

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

            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }

            .content-card .cover-wrap {
                height: 140px;
            }

            .step-item {
                padding: 24px 16px;
            }

            .feature-card {
                padding: 24px;
            }
        }