/* roulang page: index */
:root {
  --primary-dark: #101A1C;
  --accent-gold: #C8A66B;
  --accent-gold-hover: #B89458;
  --accent-gold-light: rgba(200, 166, 107, 0.12);
  --bg-warm: #F5F3EF;
  --bg-white: #FFFFFF;
  --text-main: #223036;
  --text-secondary: #66777C;
  --border-color: #DCE2E2;
  --error-color: #B4554C;
  --success-color: #4C7B5E;
  --footer-bg: #0D1516;
  --footer-link: #C8D1D2;
  --radius-sm: 4px;
  --radius-md: 8px;
  --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.06);
  --transition-base: 0.3s ease;
  --font-family: -apple-system, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --container-width: 1200px;
  --spacing-section: 100px;
  --spacing-section-mobile: 56px;
}

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

html {
  scroll-behavior: smooth;
}

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

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

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

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

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

input {
  font-family: inherit;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  font-weight: 600;
  color: var(--text-main);
}

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

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

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

.section-head .overline {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: 12px;
}

.section-head h2 {
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 700;
  line-height: 1.3;
  position: relative;
  padding-left: 18px;
}

.section-head h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 4px;
  background: var(--accent-gold);
  border-radius: 2px;
}

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

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--accent-gold-hover);
  color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(200, 166, 107, 0.35);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--accent-gold);
  color: var(--accent-gold);
}

.btn-outline:hover {
  background: var(--accent-gold-light);
  color: var(--accent-gold);
}

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

.btn-light:hover {
  background: #F0EDE8;
  color: var(--primary-dark);
}

.btn-sm {
  height: 38px;
  padding: 0 18px;
  font-size: 14px;
}

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

/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 64px;
  transition: all var(--transition-base);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 1px 0 var(--border-color);
}

.site-header:not(.scrolled) {
  background: transparent;
}

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

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

.logo-mark {
  width: 34px;
  height: 34px;
  border: 1px solid var(--accent-gold);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  color: var(--accent-gold);
  background: linear-gradient(135deg, var(--accent-gold-light), transparent);
}

.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: 0.5px;
}

.site-header:not(.scrolled) .logo-text {
  color: #FFFFFF;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: 32px;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  height: 64px;
  padding: 0 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-main);
  position: relative;
  transition: color var(--transition-base);
}

.site-header:not(.scrolled) .nav-link {
  color: #E8EDEE;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 12px;
  height: 2px;
  background: var(--accent-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s ease;
}

.site-header:not(.scrolled) .nav-link::after {
  background: var(--accent-gold);
}

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

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

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

.site-header:not(.scrolled) .btn-primary {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  border-radius: var(--radius-sm);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-main);
  transition: all 0.3s ease;
}

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

.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);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  background: var(--primary-dark);
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 80px 24px 60px;
  position: relative;
  z-index: 2;
}

.hero-content {
  padding-right: 20px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: linear-gradient(135deg, rgba(200, 166, 107, 0.2), rgba(200, 166, 107, 0.05));
  border: 1px solid rgba(200, 166, 107, 0.4);
  border-radius: 30px;
  font-size: 13px;
  color: var(--accent-gold);
  margin-bottom: 28px;
}

.hero-badge .dot {
  width: 6px;
  height: 6px;
  background: var(--accent-gold);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  font-size: clamp(36px, 5vw, 52px);
  line-height: 1.2;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 20px;
}

.hero h1 .gold-text {
  color: var(--accent-gold);
  position: relative;
}

.hero-sub {
  font-size: 16px;
  line-height: 1.7;
  color: #B8C4C6;
  margin-bottom: 36px;
  max-width: 480px;
}

.hero-sub .sub-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-right: 20px;
}

.hero-sub .sub-item::before {
  content: "/";
  color: var(--accent-gold);
  font-weight: 600;
}

.hero-sub .sub-item:first-child::before {
  content: "";
}

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

.hero-trust {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 13px;
  color: #93A3A5;
}

.hero-trust .trust-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero-trust .trust-item::before {
  content: "●";
  color: var(--accent-gold);
  font-size: 8px;
}

.hero-visual {
  position: relative;
  height: 480px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(200, 166, 107, 0.25);
}

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

.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(16, 26, 28, 0.2), rgba(16, 26, 28, 0.6));
  pointer-events: none;
}

.hero-visual-decor {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 60px;
  height: 60px;
  border: 1px solid rgba(200, 166, 107, 0.6);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  color: var(--accent-gold);
  font-size: 20px;
}

.hero-visual-decor::after {
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px dashed rgba(200, 166, 107, 0.4);
  border-radius: 50%;
}

/* ===== 痛点区 ===== */
.pain-section {
  background: var(--bg-warm);
}

.pain-list {
  display: flex;
  flex-direction: column;
}

.pain-item {
  display: flex;
  align-items: baseline;
  gap: 40px;
  padding: 32px 0;
  border-bottom: 1px solid var(--border-color);
}

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

.pain-num {
  font-size: 15px;
  font-weight: 600;
  color: var(--accent-gold);
  font-family: Georgia, serif;
  flex-shrink: 0;
  width: 48px;
}

.pain-text {
  font-size: clamp(20px, 2.8vw, 28px);
  line-height: 1.4;
  font-weight: 500;
  color: var(--text-main);
}

.pain-text .highlight {
  color: var(--accent-gold);
  font-weight: 600;
}

/* ===== 解决方案区 ===== */
.solution-section {
  background: var(--bg-white);
  position: relative;
}

.solution-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 64px;
  align-items: center;
}

.solution-list {
  position: relative;
}

.solution-list::before {
  content: "";
  position: absolute;
  left: 27px;
  top: 40px;
  bottom: 40px;
  width: 1px;
  background: var(--border-color);
}

.solution-step {
  position: relative;
  padding: 32px 0 32px 88px;
}

.solution-step:last-child {
  padding-bottom: 0;
}

.step-num {
  position: absolute;
  left: 0;
  top: 36px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1px solid var(--accent-gold);
  background: var(--bg-warm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 600;
  color: var(--accent-gold);
  font-family: Georgia, serif;
  z-index: 1;
}

.solution-step h3 {
  font-size: 22px;
  margin-bottom: 8px;
}

.solution-step p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.solution-visual {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
}

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

/* ===== 成果数据区 ===== */
.stats-section {
  background: var(--primary-dark);
  padding: 80px 0;
}

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

.stat-item {
  text-align: center;
  padding: 24px 16px;
  position: relative;
}

.stat-item:not(:last-child)::after {
  content: "";
  position: absolute;
  right: 0;
  top: 15%;
  bottom: 15%;
  width: 1px;
  background: rgba(255, 255, 255, 0.12);
}

.stat-num {
  font-size: clamp(36px, 4vw, 48px);
  font-weight: 700;
  color: var(--accent-gold);
  line-height: 1.2;
  font-family: Georgia, "PingFang SC", sans-serif;
}

.stat-label {
  margin-top: 8px;
  font-size: 14px;
  color: #93A3A5;
  letter-spacing: 1px;
}

/* ===== 资讯列表 ===== */
.latest-section {
  background: var(--bg-warm);
}

.info-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.info-card {
  display: flex;
  align-items: center;
  gap: 32px;
  background: var(--bg-warm);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 24px 28px;
  transition: all var(--transition-base);
  position: relative;
}

.info-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--accent-gold);
  border-radius: 4px 0 0 4px;
  opacity: 0;
  transform: scaleY(0.5);
  transition: all var(--transition-base);
}

.info-card:hover {
  background: var(--bg-white);
  border-color: var(--accent-gold);
  transform: translateX(4px);
  box-shadow: var(--shadow-card);
}

.info-card:hover::before {
  opacity: 1;
  transform: scaleY(1);
}

.info-card-left {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex-shrink: 0;
  min-width: 130px;
}

.badge {
  display: inline-block;
  padding: 3px 12px;
  font-size: 12px;
  font-weight: 500;
  color: var(--accent-gold);
  border: 1px solid var(--accent-gold);
  border-radius: 4px;
  background: transparent;
  line-height: 1.5;
}

.info-date {
  font-size: 13px;
  color: var(--text-secondary);
}

.info-card-main {
  flex: 1;
  min-width: 0;
}

.info-card-main h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
  line-height: 1.4;
}

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

.info-link {
  flex-shrink: 0;
  font-size: 14px;
  font-weight: 500;
  color: var(--accent-gold);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition-base);
}

.info-link:hover {
  gap: 8px;
}

.empty-state {
  padding: 60px 24px;
  text-align: center;
  background: var(--bg-white);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
}

.empty-state p {
  font-size: 16px;
}

/* ===== 客户证言 ===== */
.testimonial-section {
  background: var(--bg-white);
  position: relative;
  overflow: hidden;
}

.testimonial-section::before {
  content: "";
  position: absolute;
  right: -120px;
  top: -120px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: url("/assets/images/coverpic/cover-2.png") center/cover no-repeat;
  opacity: 0.08;
  pointer-events: none;
}

.testimonial-list {
  display: flex;
  flex-direction: column;
  gap: 40px;
  max-width: 900px;
}

.testimonial-item {
  padding: 16px 0 16px 32px;
  border-left: 3px solid var(--accent-gold);
  position: relative;
}

.testimonial-item .quote-mark {
  font-size: 48px;
  color: var(--accent-gold);
  font-family: Georgia, serif;
  line-height: 0.8;
  margin-bottom: 8px;
}

.testimonial-item blockquote {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-main);
  font-style: normal;
}

.testimonial-meta {
  margin-top: 16px;
  font-size: 14px;
  color: var(--text-secondary);
}

.testimonial-meta .name {
  font-weight: 600;
  color: var(--text-main);
}

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

.faq-list {
  max-width: 860px;
  margin: 0 auto;
}

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

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

.faq-question {
  display: flex;
  align-items: center;
  gap: 20px;
  width: 100%;
  padding: 28px 8px;
  font-size: 18px;
  font-weight: 500;
  color: var(--text-main);
  transition: color var(--transition-base);
  text-align: left;
}

.faq-question .q-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--accent-gold);
  border-radius: 50%;
  color: var(--accent-gold);
  font-size: 14px;
  font-weight: 600;
  flex-shrink: 0;
}

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

.faq-question .qa-arrow {
  margin-left: auto;
  font-size: 18px;
  color: var(--text-secondary);
  transition: transform var(--transition-base);
  flex-shrink: 0;
}

.faq-item.open .faq-question {
  color: var(--accent-gold);
}

.faq-item.open .faq-question .qa-arrow {
  transform: rotate(45deg);
  color: var(--accent-gold);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, opacity 0.3s ease;
  opacity: 0;
}

.faq-item.open .faq-answer {
  max-height: 400px;
  opacity: 1;
}

.faq-answer-inner {
  padding: 0 60px 28px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* ===== 最终CTA ===== */
.final-cta {
  position: relative;
  background: var(--primary-dark);
  padding: 100px 0;
  overflow: hidden;
  text-align: center;
}

.final-cta.bg-image {
  background-image: url("/assets/images/backpic/back-2.png");
  background-size: cover;
  background-position: center;
}

.final-cta .overlay {
  position: absolute;
  inset: 0;
  background: rgba(16, 26, 28, 0.88);
  pointer-events: none;
}

.final-cta .cta-inner {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}

.final-cta h2 {
  font-size: clamp(30px, 4vw, 42px);
  color: #FFFFFF;
  margin-bottom: 20px;
  font-weight: 700;
}

.final-cta p {
  color: #B8C4C6;
  font-size: 16px;
  margin-bottom: 40px;
  line-height: 1.7;
}

.final-cta .btn {
  font-size: 17px;
  height: 54px;
  padding: 0 40px;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--footer-bg);
  padding-top: 60px;
}

.footer-main {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr 0.8fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

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

.footer-brand p {
  margin-top: 16px;
  font-size: 14px;
  color: #93A3A5;
  line-height: 1.7;
  max-width: 260px;
}

.footer-col h4 {
  color: #FFFFFF;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 1px;
}

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

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

.footer-col ul a {
  font-size: 14px;
  color: var(--footer-link);
  transition: color var(--transition-base);
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  font-size: 13px;
  color: #66777C;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom a {
  color: #93A3A5;
}

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

/* ===== 滚动 ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .hero-inner {
    gap: 40px;
    padding-left: 24px;
    padding-right: 24px;
  }

  .hero-visual {
    height: 380px;
  }

  .solution-grid {
    gap: 40px;
  }

  .info-card {
    flex-wrap: wrap;
  }

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

@media (max-width: 768px) {
  .section {
    padding: var(--spacing-section-mobile) 0;
  }

  .site-header.scrolled {
    background: rgba(255, 255, 255, 0.98);
  }

  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg-white);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px 24px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    display: none;
    margin-left: 0;
    max-height: calc(100vh - 64px);
    overflow-y: auto;
    border-bottom: 1px solid var(--border-color);
  }

  .main-nav.open {
    display: flex;
  }

  .nav-link {
    height: auto;
    padding: 14px 8px;
    font-size: 16px;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
  }

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

  .nav-toggle {
    display: flex;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-top: 100px;
    padding-bottom: 48px;
  }

  .hero-content {
    padding-right: 0;
  }

  .hero h1 {
    font-size: clamp(30px, 6vw, 40px);
  }

  .hero-visual {
    height: 320px;
  }

  .pain-item {
    flex-direction: column;
    gap: 8px;
    padding: 24px 0;
  }

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

  .solution-visual img {
    height: 260px;
  }

  .solution-list::before {
    left: 23px;
  }

  .solution-step {
    padding-left: 76px;
  }

  .step-num {
    width: 48px;
    height: 48px;
    font-size: 16px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
  }

  .stat-item:nth-child(2)::after {
    display: none;
  }

  .stat-item {
    padding: 20px 12px;
  }

  .info-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .info-card-left {
    flex-direction: row;
    align-items: center;
    min-width: auto;
  }

  .info-card:hover {
    transform: translateX(2px);
  }

  .faq-question {
    font-size: 16px;
    padding: 20px 4px;
  }

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

  .footer-main {
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

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

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

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

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

  .hero-trust {
    flex-wrap: wrap;
    gap: 12px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 20px;
  }

  .hero-visual {
    height: 240px;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0;
  }

  .stat-num {
    font-size: 30px;
  }

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

  .testimonial-item {
    padding-left: 20px;
  }

  .testimonial-item blockquote {
    font-size: 16px;
  }

  .solution-step h3 {
    font-size: 19px;
  }

  .pain-text {
    font-size: 18px;
  }
}

/* roulang page: category1 */
:root {
  --primary: #101A1C;
  --accent: #C8A66B;
  --accent-hover: #B89458;
  --bg: #F5F3EF;
  --text: #223036;
  --muted: #66777C;
  --line: #DCE2E2;
  --card-bg: #FFFFFF;
  --radius: 6px;
  --shadow: 0 4px 16px rgba(0,0,0,0.06);
  --transition: 0.3s ease;
  --container: 1200px;
  --gap: 24px;
  --font-family: -apple-system, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

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

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

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  padding-top: 64px;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease;
}

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

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

ul, ol {
  list-style: none;
}

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

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 28px;
  border-radius: 4px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: all 0.25s ease;
  background: transparent;
  border: 1px solid transparent;
}

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

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

.btn-outline {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
}

.btn-outline:hover {
  background-color: rgba(200, 166, 107, 0.1);
  color: var(--accent);
}

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

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 64px;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  z-index: 1000;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

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

.logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background-color: var(--primary);
  color: var(--accent);
  font-size: 13px;
  border-radius: 4px;
  line-height: 1;
}

.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 40px;
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 400;
  color: var(--text);
  white-space: nowrap;
  transition: color 0.25s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  background-color: var(--accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.3s ease;
}

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

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

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: auto;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.2s ease;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background-color: var(--text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

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

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

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

/* ===== Page Hero Banner ===== */
.page-hero {
  position: relative;
  height: 300px;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(16, 26, 28, 0.85) 0%, rgba(16, 26, 28, 0.55) 65%, rgba(16, 26, 28, 0.25) 100%);
}

.page-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 180px;
  height: 100%;
  border-right: 1px solid rgba(200, 166, 107, 0.3);
  border-left: 1px solid rgba(200, 166, 107, 0.15);
  pointer-events: none;
}

.page-hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
  padding: 40px 0;
}

.page-hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--accent);
  border: 1px solid rgba(200, 166, 107, 0.5);
  padding: 4px 14px;
  border-radius: 4px;
  margin-bottom: 20px;
  background: rgba(16, 26, 28, 0.3);
}

.page-hero h1 {
  color: #FFFFFF;
  font-size: clamp(32px, 5vw, 44px);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 14px;
  letter-spacing: 0.01em;
}

.page-hero p {
  color: #D8DCDA;
  font-size: 16px;
  line-height: 1.7;
  max-width: 560px;
}

/* ===== Guide Section ===== */
.guide-section {
  padding: 80px 0 60px;
}

.guide-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 60px;
  align-items: start;
}

.guide-main {
  min-width: 0;
}

.guide-intro {
  margin-bottom: 48px;
}

.guide-intro h2 {
  font-size: clamp(26px, 3vw, 32px);
  font-weight: 600;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 16px;
  position: relative;
  padding-left: 20px;
}

.guide-intro h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.2em;
  width: 4px;
  height: 1em;
  background-color: var(--accent);
  border-radius: 2px;
}

.guide-intro p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
  max-width: 640px;
}

/* Steps */
.steps-list {
  border-top: 1px solid var(--line);
}

.step-item {
  display: flex;
  gap: 28px;
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 84px;
  transition: background 0.3s ease;
}

.step-item:hover {
  background: rgba(255, 255, 255, 0.5);
}

.step-num {
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
  color: var(--accent);
  min-width: 64px;
  font-variant-numeric: tabular-nums;
}

.step-content {
  flex: 1;
}

.step-content h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
  line-height: 1.4;
}

.step-content p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 10px;
}

.step-content ul li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 8px;
  font-size: 15px;
  color: var(--text);
  line-height: 1.7;
}

.step-content ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent);
}

.step-content ul li:last-child {
  margin-bottom: 0;
}

/* Guide cover image */
.guide-cover {
  margin: 48px 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
}

.guide-cover img {
  width: 100%;
  height: auto;
  transition: transform 0.6s ease;
}

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

/* FAQ block */
.faq-block {
  margin-top: 48px;
}

.faq-block h2 {
  font-size: clamp(24px, 3vw, 30px);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 24px;
  position: relative;
  padding-left: 20px;
}

.faq-block h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.2em;
  width: 4px;
  height: 1em;
  background-color: var(--accent);
  border-radius: 2px;
}

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

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

.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
  padding: 20px 0;
  cursor: pointer;
  background: none;
  text-align: left;
  font-size: 18px;
  font-weight: 500;
  color: var(--text);
  transition: color 0.25s ease;
}

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

.faq-q .q-label {
  color: var(--accent);
  font-weight: 700;
  margin-right: 8px;
  font-size: 20px;
}

.faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  font-size: 16px;
  color: var(--accent);
  transition: transform 0.25s ease, background 0.25s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background-color: rgba(200, 166, 107, 0.1);
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease, padding 0.25s ease;
  padding: 0 40px 0 36px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
}

.faq-a-inner {
  padding-bottom: 20px;
}

.faq-item.active .faq-a {
  max-height: 300px;
}

/* Sidebar */
.guide-side {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: 88px;
}

.side-card {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
}

.side-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  position: relative;
}

.side-card h3::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 32px;
  height: 2px;
  background-color: var(--accent);
}

.anchor-nav li {
  margin-bottom: 6px;
}

.anchor-nav a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text);
  padding: 6px 0;
  transition: color 0.2s ease, transform 0.2s ease;
}

.anchor-nav a::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  border: 1px solid var(--accent);
  transition: background 0.2s ease;
}

.anchor-nav a:hover {
  color: var(--accent);
  transform: translateX(3px);
}

.anchor-nav a:hover::before {
  background-color: var(--accent);
}

.side-tip {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
}

.side-tip ul {
  margin-top: 10px;
}

.side-tip ul li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 8px;
  line-height: 1.6;
}

.side-tip ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: var(--accent);
}

.side-note {
  padding: 20px;
  background: rgba(200, 166, 107, 0.08);
  border-radius: 4px;
  font-size: 14px;
  color: var(--text);
  line-height: 1.7;
}

.side-note .note-icon {
  color: var(--accent);
  font-size: 20px;
  margin-bottom: 8px;
  display: block;
}

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

.cta-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(200, 166, 107, 0.6), transparent);
}

.cta-section h2 {
  color: #FFFFFF;
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 14px;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.65);
  font-size: 16px;
  line-height: 1.7;
  max-width: 560px;
  margin: 0 auto 36px;
}

.cta-section .btn-primary {
  height: 48px;
  padding: 0 40px;
  font-size: 16px;
}

/* ===== Footer ===== */
.site-footer {
  background: #0D1516;
  color: #C8D1D2;
  padding: 64px 0 0;
}

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

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

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

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

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
  max-width: 280px;
  margin-top: 12px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #FFFFFF;
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
}

.footer-col h4::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 24px;
  height: 2px;
  background-color: var(--accent);
}

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

.footer-col ul a {
  font-size: 14px;
  color: #C8D1D2;
  transition: color 0.25s ease;
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 24px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.5);
  transition: color 0.25s ease;
}

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

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .guide-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }

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

  .guize-side .side-card {
    width: 100%;
  }

  .side-card:last-child {
    grid-column: span 2;
  }

  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 768px) {
  body {
    padding-top: 56px;
  }

  .header-inner {
    height: 56px;
  }

  .site-header {
    height: 56px;
  }

  .main-nav {
    display: none;
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 16px 24px 24px;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    z-index: 999;
  }

  .main-nav.open {
    display: flex;
  }

  .nav-link {
    display: block;
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
    font-size: 16px;
  }

  .nav-link:last-child {
    border-bottom: none;
  }

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

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

  .nav-toggle {
    display: flex;
  }

  .page-hero {
    height: 260px;
  }

  .page-hero-content {
    padding: 20px 0;
  }

  .guide-section {
    padding: 56px 0 40px;
  }

  .guize-section .guide-layout {
    gap: 36px;
  }

  .step-item {
    gap: 16px;
    padding: 32px 0;
  }

  .step-num {
    font-size: 30px;
    min-width: 44px;
  }

  .step-content h3 {
    font-size: 18px;
  }

  .faq-q {
    font-size: 16px;
    padding: 16px 0;
  }

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

@media (max-width: 520px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .page-hero {
    height: 240px;
  }

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

  .page-hero p {
    font-size: 14px;
  }

  .page-hero-tag {
    font-size: 12px;
    margin-bottom: 14px;
  }

  .guide-side {
    grid-template-columns: 1fr;
  }

  .side-card:last-child {
    grid-column: auto;
  }

  .step-item {
    flex-direction: column;
    gap: 12px;
  }

  .step-num {
    font-size: 28px;
  }

  .faq-icon {
    width: 20px;
    height: 20px;
    font-size: 14px;
  }

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

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* roulang page: article */
:root {
  --color-dark: #101A1C;
  --color-gold: #C8A66B;
  --color-gold-dark: #B89458;
  --color-bg: #F5F3EF;
  --color-card: #FFFFFF;
  --color-text: #223036;
  --color-muted: #66777C;
  --color-border: #DCE2E2;
  --color-footer: #0D1516;
  --color-footer-text: #C8D1D2;
  --color-error: #B4554C;
  --color-success: #4C7B5E;
  --radius: 6px;
  --radius-lg: 8px;
  --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.06);
  --container: 1200px;
  --reading: 720px;
  --header-h: 64px;
  --font: -apple-system, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a:hover, a:focus-visible {
  color: var(--color-gold);
}

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

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

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

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

.container--article {
  max-width: 960px;
}

.container--reading {
  max-width: var(--reading);
  margin: 0 auto;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(245, 243, 239, 0.95);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-h);
}

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

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: var(--color-dark);
  white-space: nowrap;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 1.5px solid var(--color-gold);
  color: var(--color-gold);
  border-radius: 4px;
  font-size: 14px;
  transform: rotate(45deg);
  transition: transform 0.3s ease;
}

.logo:hover .logo-mark {
  transform: rotate(135deg);
}

.logo-text {
  letter-spacing: 0.5px;
}

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

.nav-link {
  position: relative;
  display: inline-block;
  padding: 6px 2px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  white-space: nowrap;
}

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

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

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

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
}

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

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

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

.btn-outline:hover {
  background: rgba(200, 166, 107, 0.12);
  border-color: var(--color-gold);
  color: var(--color-dark);
}

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

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

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  cursor: pointer;
  padding: 10px 8px;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

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

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

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

/* ===== Article Page ===== */
.article-page {
  background: var(--color-bg);
  padding: 48px 0 96px;
  min-height: 70vh;
}

.article-shell {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 56px 56px 48px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--color-muted);
  margin-bottom: 28px;
}

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

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

.breadcrumb-sep {
  color: var(--color-border);
}

.article-header {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 32px;
  margin-bottom: 8px;
}

.article-category {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 18px;
}

.badge {
  display: inline-block;
  padding: 3px 12px;
  border: 1px solid var(--color-gold);
  border-radius: 4px;
  font-size: 13px;
  color: var(--color-gold-dark);
  background: rgba(200, 166, 107, 0.06);
  font-weight: 500;
  line-height: 1.5;
}

.article-title {
  font-size: clamp(1.8rem, 3.2vw, 2.5rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-dark);
  letter-spacing: 0.5px;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px 24px;
  margin-top: 18px;
  font-size: 14px;
  color: var(--color-muted);
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.meta-item::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-gold);
}

.meta-item:first-child::before {
  display: none;
}

.article-content {
  max-width: var(--reading);
  margin: 32px auto 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
}

.article-content p {
  margin: 0 0 1.5em;
}

.article-content h2 {
  font-size: 24px;
  font-weight: 600;
  line-height: 1.4;
  margin: 2em 0 1em;
  padding-left: 14px;
  border-left: 3px solid var(--color-gold);
  color: var(--color-dark);
}

.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 1.6em 0 0.8em;
  color: var(--color-dark);
}

.article-content ul,
.article-content ol {
  margin: 0 0 1.5em 1.1em;
  padding: 0;
}

.article-content li {
  margin-bottom: 0.5em;
  padding-left: 4px;
}

.article-content ul li {
  list-style: disc;
}

.article-content ol li {
  list-style: decimal;
}

.article-content blockquote {
  border-left: 3px solid var(--color-gold);
  background: var(--color-bg);
  padding: 18px 22px;
  margin: 1.5em 0;
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--color-muted);
  font-size: 15px;
}

.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  margin: 24px 0;
  border: 1px solid var(--color-border);
}

.article-content a {
  color: var(--color-gold-dark);
  border-bottom: 1px solid transparent;
}

.article-content a:hover {
  border-bottom-color: var(--color-gold);
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
  line-height: 1.6;
}

.article-content th,
.article-content td {
  border: 1px solid var(--color-border);
  padding: 10px 14px;
  text-align: left;
}

.article-content th {
  background: var(--color-bg);
  font-weight: 600;
}

.article-content hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2em 0;
}

.article-pager {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
}

.pager-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding: 4px 0;
}

.pager-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1.5px;
  background: var(--color-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.pager-link:hover::after {
  transform: scaleX(1);
}

.pager-prev::before {
  content: '← ';
}

.pager-next::after {
  content: ' →';
}

.article-empty {
  max-width: var(--reading);
  margin: 48px auto 0;
  padding: 64px 32px;
  text-align: center;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg);
}

.article-empty p {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-muted);
  margin-bottom: 24px;
}

/* ===== Related ===== */
.related-section {
  margin-top: 56px;
}

.section-title-wrap {
  margin-bottom: 32px;
}

.section-title {
  font-size: clamp(1.3rem, 2.2vw, 1.65rem);
  font-weight: 600;
  color: var(--color-dark);
  position: relative;
  padding-left: 16px;
}

.section-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  background: var(--color-gold);
  border-radius: 2px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.related-card {
  display: flex;
  flex-direction: column;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
  border-left: 4px solid transparent;
}

.related-card:hover {
  border-color: var(--color-gold);
  border-left-color: var(--color-gold);
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.related-thumb {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.related-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.related-card:hover .related-thumb img {
  transform: scale(1.05);
}

.related-body {
  padding: 20px 20px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.related-body h3 {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-dark);
}

.related-body p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
  flex: 1;
}

.related-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-gold-dark);
}

.back-home {
  margin-top: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 15px;
  font-weight: 500;
}

.back-home a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 0;
  color: var(--color-text);
  border-bottom: 1px solid transparent;
}

.back-home a:hover {
  color: var(--color-gold);
  border-bottom-color: var(--color-gold);
}

.back-home .divider {
  color: var(--color-border);
}

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

.footer-main {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-brand .logo {
  color: #fff;
  margin-bottom: 18px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-footer-text);
  max-width: 300px;
  margin-top: 4px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul a {
  font-size: 14px;
  color: var(--color-footer-text);
  display: inline-flex;
  align-items: center;
}

.footer-col ul a::before {
  content: '›';
  margin-right: 6px;
  color: var(--color-gold);
}

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

.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: rgba(200, 209, 210, 0.7);
}

.footer-bottom a {
  color: rgba(200, 209, 210, 0.7);
}

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

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

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

  .footer-brand {
    grid-column: span 3;
  }

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

@media (max-width: 768px) {
  .header-inner {
    gap: 12px;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    padding: 12px 24px 16px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.04);
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav .nav-link {
    display: block;
    padding: 13px 0;
    border-bottom: 1px solid #EDF0F0;
    font-size: 16px;
  }

  .main-nav .nav-link:last-child {
    border-bottom: none;
  }

  .nav-toggle {
    display: flex;
  }

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

  .header-actions {
    margin-left: auto;
  }

  .article-page {
    padding: 32px 0 64px;
  }

  .article-shell {
    padding: 36px 24px 32px;
    border-radius: var(--radius);
  }

  .article-title {
    font-size: 1.6rem;
  }

  .article-meta {
    gap: 10px 18px;
    font-size: 13px;
  }

  .article-content {
    font-size: 15px;
    margin-top: 24px;
  }

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

  .article-content h3 {
    font-size: 18px;
  }

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

  .back-home {
    flex-direction: column;
    gap: 10px;
  }

  .back-home .divider {
    display: none;
  }

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

  .footer-brand {
    grid-column: span 2;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }

  .logo-text {
    font-size: 16px;
  }

  .logo-mark {
    width: 26px;
    height: 26px;
    font-size: 12px;
  }

  .article-page {
    padding: 24px 0 48px;
  }

  .article-shell {
    padding: 28px 18px 24px;
  }

  .breadcrumb {
    font-size: 12px;
    margin-bottom: 20px;
  }

  .article-title {
    font-size: 1.4rem;
  }

  .article-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .meta-item::before {
    display: none;
  }

  .article-pager {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    text-align: center;
  }

  .pager-link {
    text-align: center;
  }

  .pager-prev::before,
  .pager-next::after {
    content: none;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-bottom: 36px;
  }

  .footer-brand {
    grid-column: span 1;
  }

  .footer-col h4 {
    margin-bottom: 14px;
  }
}

/* roulang page: category2 */
/* ===== Design Variables ===== */
:root {
  --ink: #101A1C;
  --gold: #C8A66B;
  --gold-dark: #B89458;
  --paper: #F5F3EF;
  --white: #FFFFFF;
  --text: #223036;
  --muted: #66777C;
  --line: #DCE2E2;
  --error: #B4554C;
  --success: #4C7B5E;
  --footer-bg: #0D1516;
  --footer-text: #C8D1D2;
  --radius: 6px;
  --shadow: 0 4px 16px rgba(0,0,0,0.06);
  --container: 1200px;
  --header-h: 64px;
  --space-section: 96px;
  --font-stack: -apple-system, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

/* ===== Reset / Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-stack);
  background-color: var(--paper);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover,
a:focus-visible {
  color: var(--gold-dark);
}

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

input {
  font-family: inherit;
}

ul,
ol {
  list-style: none;
}

h1, h2, h3, h4 {
  line-height: 1.3;
  color: var(--ink);
  font-weight: 600;
}

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

/* ===== Container ===== */
.container {
  max-width: var(--container);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 28px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease, transform 0.2s ease;
}

.btn-gold {
  background-color: var(--gold);
  color: var(--ink);
}

.btn-gold:hover {
  background-color: var(--gold-dark);
  color: var(--ink);
  transform: translateY(-1px);
}

.btn-outline {
  border: 1px solid var(--gold);
  color: var(--gold);
}

.btn-outline:hover {
  background-color: rgba(200, 166, 107, 0.1);
  color: var(--gold-dark);
  border-color: var(--gold-dark);
}

.btn-sm {
  height: 40px;
  padding: 0 20px;
  font-size: 14px;
}

/* ===== Header / Navigation ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-h);
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.97);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: 16px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 20px;
  color: var(--ink);
  white-space: nowrap;
}

.logo-mark {
  color: var(--gold);
  font-size: 16px;
  line-height: 1;
}

.logo-text {
  letter-spacing: 0.01em;
}

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

.nav-link {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  padding: 6px 2px;
  line-height: 1.4;
}

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

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

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

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

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background-color: var(--ink);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Page Banner ===== */
.page-banner {
  position: relative;
  padding-top: calc(var(--header-h) + 60px);
  padding-bottom: 60px;
  background: linear-gradient(135deg, rgba(16, 26, 28, 0.88), rgba(16, 26, 28, 0.72)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color: var(--white);
  text-align: center;
}

.page-banner h1 {
  font-size: clamp(32px, 5vw, 46px);
  color: var(--white);
  letter-spacing: 0.02em;
  margin-bottom: 14px;
}

.page-banner p {
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  color: #C8D1D2;
  font-size: 16px;
  line-height: 1.8;
}

.page-banner .banner-tag {
  display: inline-block;
  margin-bottom: 18px;
  font-size: 13px;
  color: var(--gold);
  border: 1px solid rgba(200, 166, 107, 0.5);
  border-radius: 4px;
  padding: 4px 14px;
  letter-spacing: 0.08em;
}

/* ===== Intro Section ===== */
.faq-intro {
  padding: var(--space-section) 0;
}

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

.faq-intro-content h2 {
  font-size: clamp(24px, 3vw, 30px);
  margin-bottom: 16px;
  position: relative;
  padding-left: 18px;
}

.faq-intro-content h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 4px;
  height: 22px;
  background-color: var(--gold);
  border-radius: 2px;
}

.faq-intro-content p {
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 20px;
}

.faq-intro-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-intro-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  color: var(--text);
}

.faq-intro-list li::before {
  content: "◆";
  color: var(--gold);
  font-size: 12px;
  line-height: 1.8;
  flex-shrink: 0;
}

.faq-intro-media img {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

/* ===== FAQ Section ===== */
.faq-section {
  padding: 0 0 var(--space-section);
}

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

.faq-title-row {
  margin-bottom: 48px;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  color: var(--gold);
  border: 1px solid var(--gold);
  border-radius: 4px;
  padding: 3px 12px;
  margin-bottom: 14px;
  letter-spacing: 0.08em;
}

.faq-title-row h2 {
  font-size: clamp(26px, 3.5vw, 34px);
  position: relative;
  padding-left: 18px;
}

.faq-title-row h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 4px;
  height: 24px;
  background-color: var(--gold);
  border-radius: 2px;
}

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

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

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px 0;
  text-align: left;
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  transition: color 0.25s ease;
}

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

.faq-q-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 4px;
  background-color: rgba(200, 166, 107, 0.12);
  color: var(--gold);
  font-weight: 700;
  font-size: 15px;
  flex-shrink: 0;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer-inner {
  padding: 0 0 24px 48px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

/* ===== Note Section ===== */
.faq-note {
  padding: 0 0 var(--space-section);
}

.faq-note-inner {
  background-color: var(--ink);
  border-radius: var(--radius);
  padding: 40px 48px;
  display: flex;
  align-items: center;
  gap: 32px;
  justify-content: space-between;
  flex-wrap: wrap;
}

.faq-note-inner p {
  color: #C8D1D2;
  font-size: 16px;
  line-height: 1.7;
  max-width: 620px;
}

.faq-note-inner p strong {
  color: var(--gold);
  font-weight: 600;
}

.faq-note-inner .btn {
  flex-shrink: 0;
}

/* ===== CTA Section ===== */
.cta-section {
  background-color: var(--ink);
  padding: 80px 0;
  text-align: center;
}

.cta-section h2 {
  color: var(--white);
  font-size: clamp(26px, 3.5vw, 36px);
  margin-bottom: 14px;
}

.cta-section p {
  color: #C8D1D2;
  font-size: 16px;
  margin-bottom: 32px;
}

/* ===== Footer ===== */
.site-footer {
  background-color: var(--footer-bg);
  color: var(--footer-text);
  padding-top: 64px;
}

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

.footer-brand .logo {
  color: var(--white);
  margin-bottom: 16px;
}

.footer-brand .logo .logo-mark {
  color: var(--gold);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: #8A9A9E;
  max-width: 320px;
  margin-top: 12px;
}

.footer-col h4 {
  color: var(--white);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 18px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col a {
  font-size: 14px;
  color: var(--footer-text);
  transition: color 0.25s ease;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: #6E7D80;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-bottom a {
  color: #8A9A9E;
}

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

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .main-nav {
    gap: 20px;
  }

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

@media (max-width: 768px) {
  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    width: 100%;
    background-color: var(--white);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px 24px 32px;
    gap: 20px;
    border-bottom: 1px solid var(--line);
    transform: translateX(100%);
    transition: transform 0.3s ease;
  }

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

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

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

  .page-banner {
    padding-top: calc(var(--header-h) + 40px);
    padding-bottom: 40px;
  }

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

  .faq-note-inner {
    padding: 32px 24px;
    flex-direction: column;
    text-align: center;
  }

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

  :root {
    --space-section: 64px;
  }
}

@media (max-width: 520px) {
  .footer-main {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .faq-answer-inner {
    padding-left: 0;
  }

  .faq-question {
    font-size: 16px;
    gap: 12px;
  }

  .faq-q-mark {
    width: 28px;
    height: 28px;
    font-size: 13px;
  }
}

/* roulang page: category3 */
/* =========================================
   设计变量
   ========================================= */
:root {
  --primary: #101A1C;
  --primary-deep: #0D1516;
  --gold: #C8A66B;
  --gold-dark: #B89458;
  --bg: #F5F3EF;
  --white: #ffffff;
  --text: #223036;
  --text-light: #66777C;
  --border: #DCE2E2;
  --error: #B4554C;
  --success: #4C7B5E;
  --radius: 6px;
  --shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
  --container: 1200px;
  --font: -apple-system, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --transition: all 0.25s ease;
}

/* =========================================
   基础 Reset
   ========================================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease;
}
a:hover,
a:focus-visible {
  color: var(--gold);
}
img {
  max-width: 100%;
  display: block;
}
button,
input {
  font-family: inherit;
}
ul,
ol {
  list-style: none;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
  border-radius: 2px;
}

/* =========================================
   按钮
   ========================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--gold);
  color: var(--primary);
  border-color: var(--gold);
}
.btn-primary:hover {
  background: var(--gold-dark);
  border-color: var(--gold-dark);
  color: var(--primary);
}
.btn-outline {
  background: transparent;
  color: var(--gold);
  border-color: var(--gold);
}
.btn-outline:hover {
  background: rgba(200, 166, 107, 0.12);
  color: var(--gold);
}
.btn-sm {
  height: 38px;
  padding: 0 20px;
  font-size: 14px;
}

/* =========================================
   顶部导航
   ========================================= */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 64px;
  transition: var(--transition);
}
.site-header-solid {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 20px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--primary);
  color: var(--gold);
  font-size: 14px;
  border-radius: 4px;
}
.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.02em;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}
.main-nav .nav-link {
  position: relative;
  padding: 8px 14px;
  font-size: 15px;
  color: var(--text);
  font-weight: 500;
  border-radius: 4px;
  transition: var(--transition);
}
.main-nav .nav-link:after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 0;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.3s ease;
}
.main-nav .nav-link:hover {
  color: var(--gold);
}
.main-nav .nav-link:hover:after {
  transform: scaleX(1);
}
.main-nav .nav-link.active {
  color: var(--gold);
}
.main-nav .nav-link.active:after {
  transform: scaleX(1);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: var(--transition);
}
.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);
}

/* =========================================
   页面 Hero 横幅
   ========================================= */
.page-hero {
  position: relative;
  height: 280px;
  display: flex;
  align-items: center;
  padding-top: 64px;
  background: var(--primary);
  overflow: hidden;
}
.page-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.45;
}
.page-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(16, 26, 28, 0.9) 0%, rgba(16, 26, 28, 0.55) 100%);
}
.page-hero-inner {
  position: relative;
  z-index: 2;
  color: var(--white);
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 16px;
}
.breadcrumb a {
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
}
.breadcrumb a:hover {
  color: var(--gold);
}
.breadcrumb-sep {
  color: rgba(255, 255, 255, 0.3);
}
.page-hero h1 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--white);
  letter-spacing: 0.01em;
}
.page-hero-sub {
  margin-top: 14px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.75);
  letter-spacing: 0.04em;
}

/* =========================================
   板块标题
   ========================================= */
.section-head {
  text-align: center;
  margin-bottom: 56px;
}
.section-eyebrow {
  font-size: 13px;
  font-weight: 600;
  color: var(--gold);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.section-head h2 {
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 600;
  line-height: 1.3;
  color: var(--text);
}
.section-head h2:before {
  content: "";
  display: block;
  width: 40px;
  height: 3px;
  background: var(--gold);
  margin: 0 auto 18px;
  border-radius: 2px;
}
.section-intro {
  max-width: 640px;
  margin: 16px auto 0;
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.7;
}

/* =========================================
   功能矩阵区（两列非对称交替）
   ========================================= */
.matrix-section {
  padding: 80px 0 60px;
}
.feature-list {
  max-width: 1080px;
  margin: 0 auto;
}
.feature-row {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 32px;
  padding: 48px 0;
  border-bottom: 1px solid var(--border);
  align-items: center;
}
.feature-row:first-child {
  border-top: 1px solid var(--border);
}
.feature-row.reverse .feature-desc {
  order: -1;
}
.feature-side {
  position: relative;
}
.feature-num {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}
.feature-side h3 {
  font-size: 24px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
  line-height: 1.3;
}
.feature-points {
  margin-bottom: 18px;
}
.feature-points li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.8;
}
.feature-points li:before {
  content: "";
  position: absolute;
  left: 2px;
  top: 12px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
  opacity: 0.7;
}
.feature-tag {
  display: inline-block;
  padding: 3px 14px;
  border: 1px solid var(--gold);
  border-radius: 4px;
  font-size: 13px;
  color: var(--gold);
  font-weight: 500;
}
.feature-desc {
  position: relative;
  padding-left: 40px;
}
.feature-desc:before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: var(--gold);
  opacity: 0.35;
  border-radius: 2px;
}
.feature-row.reverse .feature-desc {
  padding-left: 0;
  padding-right: 40px;
}
.feature-row.reverse .feature-desc:before {
  left: auto;
  right: 0;
}
.feature-desc p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
}

/* =========================================
   数据统计带
   ========================================= */
.stats-section {
  background: var(--primary);
  padding: 72px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.stat-item {
  text-align: center;
  padding: 20px 16px;
  border-right: 1px solid rgba(255, 255, 255, 0.12);
  position: relative;
}
.stat-item:last-child {
  border-right: none;
}
.stat-item .stat-num {
  font-size: 44px;
  font-weight: 700;
  color: var(--gold);
  line-height: 1.2;
  font-family: var(--font);
}
.stat-item .stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 8px;
  letter-spacing: 0.03em;
}

/* =========================================
   适合人群 / 图文区块
   ========================================= */
.audience-section {
  padding: 80px 0;
  background: var(--white);
}
.audience-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.audience-image {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.audience-image img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.audience-image:hover img {
  transform: scale(1.05);
}
.audience-content h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
  margin-bottom: 20px;
  position: relative;
  padding-left: 18px;
}
.audience-content h2:before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  background: var(--gold);
  border-radius: 2px;
}
.audience-content p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 24px;
}
.audience-list li {
  position: relative;
  padding: 10px 0 10px 28px;
  font-size: 15px;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  line-height: 1.6;
}
.audience-list li:last-child {
  border-bottom: none;
}
.audience-list li:before {
  content: "◆";
  position: absolute;
  left: 2px;
  top: 11px;
  font-size: 12px;
  color: var(--gold);
}

/* =========================================
   FAQ 手风琴
   ========================================= */
.faq-section {
  padding: 80px 0;
}
.faq-list {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-item:first-child {
  border-top: 1px solid var(--border);
}
.faq-item-header {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 22px 0;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  transition: var(--transition);
}
.faq-item-header:hover {
  color: var(--gold);
}
.faq-q {
  font-size: 14px;
  font-weight: 700;
  color: var(--gold);
  border: 1px solid var(--gold);
  border-radius: 4px;
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.faq-item-header .faq-icon {
  margin-left: auto;
  width: 18px;
  height: 18px;
  position: relative;
  flex-shrink: 0;
}
.faq-item-header .faq-icon:before,
.faq-item-header .faq-icon:after {
  content: "";
  position: absolute;
  background: var(--gold);
  border-radius: 2px;
  transition: transform 0.25s ease;
}
.faq-item-header .faq-icon:before {
  top: 8px;
  left: 2px;
  width: 14px;
  height: 2px;
}
.faq-item-header .faq-icon:after {
  top: 2px;
  left: 8px;
  width: 2px;
  height: 14px;
}
.faq-item.open .faq-item-header .faq-icon:after {
  transform: scaleY(0);
}
.faq-item-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, opacity 0.25s ease, padding 0.25s ease;
  opacity: 0;
  padding: 0;
}
.faq-item.open .faq-item-body {
  max-height: 400px;
  opacity: 1;
  padding: 4px 0 22px 42px;
}
.faq-item-body p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-light);
}

/* =========================================
   最终 CTA
   ========================================= */
.cta-section {
  background: var(--primary-deep);
  padding: 72px 0;
  text-align: center;
}
.cta-section h2 {
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 600;
  color: var(--white);
  line-height: 1.3;
  margin-bottom: 14px;
}
.cta-section p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 32px;
}

/* =========================================
   页脚
   ========================================= */
.site-footer {
  background: var(--primary-deep);
  padding: 64px 0 0;
  color: rgba(255, 255, 255, 0.7);
}
.footer-main {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand .logo-text {
  color: var(--white);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.55);
  margin-top: 16px;
  max-width: 320px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  transition: var(--transition);
}
.footer-col ul a:hover {
  color: var(--gold);
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0 28px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.35);
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom a {
  color: rgba(255, 255, 255, 0.45);
  transition: var(--transition);
}
.footer-bottom a:hover {
  color: var(--gold);
}

/* =========================================
   响应式断点
   ========================================= */
@media (max-width: 1024px) {
  .audience-grid {
    gap: 40px;
  }
  .feature-row {
    gap: 24px;
  }
}

@media (max-width: 768px) {
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
    padding: 12px 24px 20px;
    gap: 4px;
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    margin-left: 0;
  }
  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .main-nav .nav-link {
    padding: 12px 8px;
    font-size: 16px;
    border-bottom: 1px solid var(--border);
    border-radius: 0;
  }
  .main-nav .nav-link:last-child {
    border-bottom: none;
  }
  .main-nav .nav-link:after {
    display: none;
  }
  .main-nav .nav-link.active {
    color: var(--gold);
    background: rgba(200, 166, 107, 0.06);
    border-radius: 4px;
  }
  .nav-toggle {
    display: flex;
  }
  .header-actions .btn-sm {
    display: none;
  }
  .page-hero {
    height: 240px;
  }
  .feature-row {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 36px 0;
  }
  .feature-row.reverse .feature-desc {
    order: 0;
  }
  .feature-desc,
  .feature-row.reverse .feature-desc {
    padding-left: 20px;
    padding-right: 0;
  }
  .feature-row.reverse .feature-desc:before {
    left: 0;
    right: auto;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat-item {
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }
  .stat-item:nth-child(odd) {
    border-right: 1px solid rgba(255, 255, 255, 0.08);
  }
  .stat-item:last-child,
  .stat-item:nth-last-child(2) {
    border-bottom: none;
  }
  .audience-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .audience-image img {
    height: 240px;
  }
  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 520px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .logo-text {
    font-size: 16px;
  }
  .logo-mark {
    width: 26px;
    height: 26px;
    font-size: 13px;
  }
  .page-hero {
    height: 220px;
    padding-top: 64px;
  }
  .page-hero h1 {
    font-size: 28px;
  }
  .page-hero-sub {
    font-size: 14px;
  }
  .matrix-section,
  .audience-section,
  .faq-section {
    padding: 56px 0;
  }
  .stats-section {
    padding: 48px 0;
  }
  .stat-item .stat-num {
    font-size: 36px;
  }
  .feature-side h3 {
    font-size: 20px;
  }
  .faq-item-header {
    font-size: 16px;
    padding: 18px 0;
  }
  .faq-item.open .faq-item-body {
    padding-left: 0;
  }
  .footer-main {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-brand {
    grid-column: auto;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .cta-section {
    padding: 56px 0;
  }
}