/* roulang page: index */
:root {
  --primary: #2B4C7E;
  --primary-hover: #1E3A5F;
  --primary-soft: #E8EDF5;
  --accent: #B23A48;
  --bg: #F5F8FB;
  --surface: #FFFFFF;
  --text: #1C2B3A;
  --text-secondary: #5C6B7A;
  --border: #DDE6EE;
  --shadow-sm: 0 2px 8px rgba(28, 43, 58, 0.06);
  --shadow-md: 0 10px 30px rgba(28, 43, 58, 0.06);
  --shadow-lg: 0 16px 36px rgba(28, 43, 58, 0.10);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --container-w: 1200px;
  --transition: all 0.25s ease;
}
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}
input,
textarea {
  font-family: inherit;
}
ul,
ol {
  list-style: none;
}
.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: 84px 0;
}
.section-head {
  text-align: center;
  margin-bottom: 52px;
}
.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  letter-spacing: -0.02em;
}
.section-head p {
  margin-top: 12px;
  color: var(--text-secondary);
  font-size: 16px;
}
/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  transition: var(--transition);
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn--primary {
  background: var(--primary);
  color: #fff;
}
.btn--primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.btn--outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.7);
  color: #fff;
}
.btn--outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
}
.btn--accent {
  background: var(--accent);
  color: #fff;
}
.btn--accent:hover {
  background: #8f2e3a;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.btn:focus-visible {
  outline: 3px solid rgba(43, 76, 126, 0.3);
  outline-offset: 2px;
}
/* Navigation */
.site-nav {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  width: calc(100% - 32px);
  max-width: 1160px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  box-shadow: 0 8px 30px rgba(28, 43, 58, 0.08);
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
}
.logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}
.logo i {
  font-size: 20px;
  color: var(--accent);
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  transition: var(--transition);
}
.nav-link:hover {
  background: var(--primary-soft);
  color: var(--primary);
}
.nav-link.active {
  background: var(--primary);
  color: #fff;
}
.nav-btn {
  margin-left: 8px;
  padding: 9px 22px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}
.nav-btn:hover {
  background: #8f2e3a;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 20px;
  background: var(--primary-soft);
}
/* Hero */
.hero {
  min-height: 560px;
  display: flex;
  align-items: center;
  background: linear-gradient(to bottom, rgba(43, 76, 126, 0.82) 0%, rgba(43, 76, 126, 0.0) 100%), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  padding: 150px 0 90px;
  position: relative;
}
.hero-content {
  max-width: 680px;
}
.hero-tagline {
  display: inline-block;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #fff;
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 24px;
  backdrop-filter: blur(4px);
}
.hero-title {
  font-size: 44px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.hero-subtitle {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.95);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 500px;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-note {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  margin-top: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.hero-note i {
  color: #ffd166;
}
/* Pain Points */
.pain-section {
  background: var(--bg);
}
.pain-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.pain-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}
.pain-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}
.pain-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 18px;
}
.pain-question {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
  line-height: 1.45;
}
.pain-text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
}
/* Solutions */
.solutions-section {
  background: var(--surface);
}
.solution-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.solution-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 36px 30px;
  transition: var(--transition);
  position: relative;
}
.solution-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}
.solution-card--featured {
  background: var(--surface);
  border-top: 3px solid var(--accent);
  box-shadow: var(--shadow-md);
}
.solution-badge {
  position: absolute;
  top: -12px;
  left: 24px;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 999px;
}
.solution-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
}
.solution-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}
.solution-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}
.solution-link {
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.solution-link:hover {
  color: var(--primary-hover);
  gap: 10px;
}
/* Stats */
.stats-section {
  background: var(--bg);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 40px 20px;
  transition: var(--transition);
}
.stat-item:hover {
  box-shadow: var(--shadow-md);
}
.stat-number {
  font-size: 44px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 8px;
}
/* Latest */
.latest-section {
  background: var(--surface);
}
.latest-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 32px;
  align-items: stretch;
}
.latest-feature {
  display: flex;
  flex-direction: column;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}
.latest-feature:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: var(--primary);
}
.latest-feature__img {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--primary-soft);
}
.latest-feature__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.latest-feature__body {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}
.latest-feature__body h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.45;
}
.latest-feature__body p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
}
.latest-feature__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
  color: var(--text-secondary);
  border-top: 1px solid var(--border);
  padding-top: 14px;
}
.read-more {
  color: var(--primary);
  font-weight: 600;
}
.latest-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.latest-item {
  display: block;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px 22px;
  transition: var(--transition);
}
.latest-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
  transform: translateX(4px);
}
.latest-item h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin: 8px 0 6px;
  line-height: 1.5;
}
.latest-item .latest-item__meta {
  font-size: 13px;
  color: var(--text-secondary);
}
/* Tag / Badge */
.tag {
  display: inline-block;
  background: var(--primary-soft);
  color: var(--primary);
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.tag--primary {
  background: var(--primary);
  color: #fff;
}
/* Empty State */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 80px 20px;
  background: var(--bg);
  border: 1px dashed var(--border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
}
.empty-state__icon {
  font-size: 42px;
  color: var(--border);
  margin-bottom: 16px;
}
/* CTA */
.cta-section {
  background: var(--bg);
}
.cta-box {
  background: var(--primary);
  border-radius: var(--radius-lg);
  padding: 54px 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 240px;
  height: 240px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 50%;
  transform: translate(60px, -60px);
}
.cta-text h2 {
  font-size: 26px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}
.cta-text p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.85);
}
.cta-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}
.cta-privacy {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  display: flex;
  align-items: center;
  gap: 6px;
}
.cta-privacy i {
  color: #2a9d8f;
}
/* FAQ */
.faq-section {
  background: var(--surface);
}
.faq-wrap {
  max-width: 840px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-item:first-child {
  border-top: 1px solid var(--border);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 8px;
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  transition: var(--transition);
}
.faq-question:hover {
  color: var(--primary);
}
.faq-toggle {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  transition: var(--transition);
}
.faq-item.active .faq-toggle {
  background: var(--accent);
  color: #fff;
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
  padding: 0 8px;
}
.faq-item.active .faq-answer {
  max-height: 300px;
  padding-bottom: 22px;
}
.faq-answer p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-secondary);
}
/* Footer */
.site-footer {
  background: #16283A;
  color: rgba(255, 255, 255, 0.7);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand .logo {
  color: #fff;
  font-size: 22px;
  margin-bottom: 14px;
}
.footer-brand .logo i {
  color: var(--accent);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}
.footer-links li {
  margin-bottom: 12px;
}
.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
}
.footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  margin-bottom: 12px;
  color: rgba(255, 255, 255, 0.6);
}
.footer-contact i {
  color: var(--accent);
  width: 16px;
  text-align: center;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}
/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(20, 30, 45, 0.5);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}
.modal-overlay.modal--open {
  opacity: 1;
  visibility: visible;
}
.modal {
  background: var(--surface);
  border-radius: 20px;
  box-shadow: 0 24px 60px rgba(20, 30, 45, 0.2);
  max-width: 480px;
  width: 100%;
  padding: 40px;
  position: relative;
  transform: translateY(20px) scale(0.97);
  transition: all 0.3s ease;
}
.modal-overlay.modal--open .modal {
  transform: translateY(0) scale(1);
}
.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--bg);
  color: var(--text-secondary);
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.modal-close:hover {
  background: var(--primary-soft);
  color: var(--primary);
}
.modal h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
}
.modal .modal-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}
.form-group {
  margin-bottom: 18px;
}
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}
.form-group input,
.form-group textarea {
  width: 100%;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0 14px;
  font-size: 14px;
  color: var(--text);
  background: var(--surface);
  transition: var(--transition);
}
.form-group textarea {
  height: 100px;
  padding: 12px 14px;
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(43, 76, 126, 0.15);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #9aa7b4;
}
.form-btn {
  width: 100%;
  margin-top: 6px;
}
.form-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}
.modal-privacy {
  font-size: 13px;
  color: var(--text-secondary);
  text-align: center;
  margin-top: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.modal-privacy i {
  color: #2a9d8f;
}
.form-success {
  display: none;
  text-align: center;
  padding: 20px 0;
}
.form-success i {
  font-size: 48px;
  color: #2a9d8f;
  margin-bottom: 12px;
}
.form-success h4 {
  font-size: 18px;
  color: var(--text);
  margin-bottom: 6px;
}
.form-success p {
  font-size: 14px;
  color: var(--text-secondary);
}
/* Responsive */
@media (max-width: 1024px) {
  .hero {
    padding: 130px 0 70px;
  }
  .hero-title {
    font-size: 36px;
  }
  .pain-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .solution-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .latest-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 768px) {
  .site-nav {
    border-radius: 18px;
    top: 12px;
    width: calc(100% - 24px);
  }
  .nav-toggle {
    display: flex;
  }
  .nav-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: #fff;
    border-radius: 18px;
    box-shadow: var(--shadow-lg);
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    gap: 4px;
    display: none;
    border: 1px solid var(--border);
  }
  .nav-menu.nav-open {
    display: flex;
  }
  .nav-link {
    padding: 12px 16px;
    border-radius: 10px;
    text-align: center;
  }
  .nav-btn {
    margin-left: 0;
    text-align: center;
    padding: 12px 16px;
  }
  .section {
    padding: 48px 0;
  }
  .pain-grid,
  .solution-grid,
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .cta-box {
    flex-direction: column;
    text-align: center;
    padding: 40px 24px;
  }
  .cta-actions {
    align-items: center;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .modal {
    border-radius: 0;
    max-width: 100%;
    height: 100%;
    padding: 60px 24px 30px;
  }
  .modal-overlay {
    padding: 0;
  }
  .hero-title {
    font-size: 30px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .section-head h2 {
    font-size: 26px;
  }
}
@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
  .hero {
    padding: 110px 0 50px;
    min-height: auto;
  }
  .hero-title {
    font-size: 28px;
  }
  .hero-subtitle {
    font-size: 16px;
  }
  .section-head {
    margin-bottom: 32px;
  }
  .btn {
    padding: 12px 20px;
    width: 100%;
  }
  .stat-number {
    font-size: 36px;
  }
  .solution-card {
    padding: 28px 20px;
  }
  .latest-feature__body {
    padding: 20px;
  }
}

/* roulang page: article */
:root {
  --primary: #2B4C7E;
  --primary-hover: #1E3A5F;
  --primary-light: #E8EDF5;
  --accent: #B23A48;
  --bg: #F5F8FB;
  --surface: #FFFFFF;
  --text: #1C2B3A;
  --text-secondary: #5C6B7A;
  --border: #DDE6EE;
  --shadow-sm: 0 2px 8px rgba(28,43,58,0.05);
  --shadow-md: 0 10px 30px rgba(28,43,58,0.06);
  --shadow-lg: 0 16px 36px rgba(28,43,58,0.10);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-pill: 999px;
  --container: 1200px;
  --space-section: 80px;
}

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

html { scroll-behavior: smooth; }

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

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
input, textarea { font-family: inherit; }

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: all 0.25s ease;
  gap: 8px;
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(43,76,126,0.25);
}
.btn-primary:focus-visible,
.btn-accent:focus-visible {
  outline: 3px solid rgba(43,76,126,0.3);
  outline-offset: 2px;
}
.btn-accent {
  background: var(--accent);
  color: #fff;
}
.btn-accent:hover {
  background: #9a2f3d;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(178,58,72,0.25);
}
.btn-cta {
  background: #fff;
  color: var(--primary);
}
.btn-cta:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}
.btn-outline {
  background: transparent;
  border-color: var(--primary);
  color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary-light);
}

/* Site Nav */
.site-nav {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  width: calc(100% - 48px);
  max-width: 1180px;
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.7);
  border-radius: var(--radius-pill);
  box-shadow: 0 8px 30px rgba(28,43,58,0.08);
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px 10px 24px;
  gap: 16px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  white-space: nowrap;
}
.logo i {
  color: var(--primary);
  font-size: 22px;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-link {
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}
.nav-link:hover {
  background: var(--primary-light);
  color: var(--primary);
}
.nav-link.active {
  background: var(--primary);
  color: #fff;
}
.nav-btn {
  padding: 9px 22px;
  border-radius: var(--radius-pill);
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.2s ease;
}
.nav-btn:hover {
  background: #9a2f3d;
  transform: translateY(-1px);
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  color: var(--text);
  padding: 6px;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 18px;
  padding: 0;
  overflow: hidden;
  white-space: nowrap;
}
.breadcrumb a {
  color: var(--text-secondary);
  transition: color 0.2s;
}
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .crumb-category { color: var(--primary); font-weight: 600; }
.breadcrumb .crumb-current {
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
}
.breadcrumb i.chevron {
  font-size: 10px;
  color: #B0BFCF;
  flex-shrink: 0;
}

/* Article Section */
.article-section {
  padding: 130px 0 60px;
}
.container-narrow {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
}
.article-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 64px;
  box-shadow: var(--shadow-md);
}
.article-header {
  padding-bottom: 32px;
  margin-bottom: 36px;
  border-bottom: 1px solid var(--border);
}
.article-header h1 {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 16px;
  word-break: break-word;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 14px;
  color: var(--text-secondary);
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.meta-item i {
  color: var(--primary);
  font-size: 13px;
}

/* Article Content */
.article-content {
  font-size: 17px;
  line-height: 1.8;
  color: #2A3A4A;
}
.article-content p {
  margin-bottom: 1.5em;
}
.article-content h2 {
  font-size: 26px;
  font-weight: 700;
  margin: 2em 0 1em;
  color: var(--text);
  line-height: 1.3;
}
.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 1.8em 0 0.9em;
  color: var(--text);
}
.article-content h4 {
  font-size: 18px;
  font-weight: 600;
  margin: 1.5em 0 0.8em;
  color: var(--text);
}
.article-content ul,
.article-content ol {
  margin: 1em 0 1.5em;
  padding-left: 1.6em;
}
.article-content li {
  margin-bottom: 0.6em;
}
.article-content img {
  max-width: 100%;
  border-radius: 12px;
  margin: 1.8em 0;
  box-shadow: var(--shadow-sm);
}
.article-content blockquote {
  border-left: 4px solid var(--primary);
  background: var(--bg);
  padding: 18px 24px;
  border-radius: 0 12px 12px 0;
  margin: 1.8em 0;
  color: var(--text-secondary);
  font-style: normal;
}
.article-content blockquote p:last-child {
  margin-bottom: 0;
}
.article-content a {
  color: var(--primary);
  border-bottom: 1px solid transparent;
  transition: all 0.2s;
}
.article-content a:hover {
  border-bottom-color: var(--primary);
}
.article-content code {
  background: #EEF1F5;
  border-radius: 6px;
  padding: 3px 8px;
  font-size: 14px;
  color: var(--primary);
}
.article-content pre {
  background: #1C2B3A;
  color: #F5F8FB;
  padding: 20px 24px;
  border-radius: 12px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.6;
  margin: 1.8em 0;
}
.article-content pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.8em 0;
  font-size: 15px;
}
.article-content th {
  background: var(--bg);
  font-weight: 600;
  text-align: left;
  padding: 12px 16px;
  border: 1px solid var(--border);
}
.article-content td {
  padding: 12px 16px;
  border: 1px solid var(--border);
}

/* Article Tags */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 28px;
  margin-top: 36px;
  border-top: 1px solid var(--border);
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 6px 16px;
  font-size: 13px;
  color: var(--text-secondary);
  transition: all 0.2s;
}
.tag:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}
.tag i {
  font-size: 11px;
  color: var(--primary);
}

/* Article Empty */
.article-empty {
  text-align: center;
  padding: 80px 24px;
}
.article-empty i {
  font-size: 56px;
  color: #B0BFCF;
  margin-bottom: 24px;
}
.article-empty h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}
.article-empty p {
  color: var(--text-secondary);
  font-size: 15px;
  margin-bottom: 12px;
}
.article-empty .btn {
  margin-top: 20px;
}

/* Related Section */
.related-section {
  padding: 60px 0;
  background: var(--bg);
}
.section-head {
  text-align: center;
  margin-bottom: 44px;
}
.section-head h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.section-head p {
  font-size: 15px;
  color: var(--text-secondary);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}
.related-img {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #e8edf5;
}
.related-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.related-card:hover .related-img img {
  transform: scale(1.04);
}
.related-body {
  padding: 24px;
}
.related-body .badge {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-pill);
  padding: 4px 12px;
  margin-bottom: 10px;
}
.related-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.4;
}
.related-body p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 14px;
  line-height: 1.6;
}
.related-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.2s;
}
.related-link:hover {
  gap: 10px;
}

/* CTA Section */
.cta-section {
  padding: 72px 0;
  background: var(--primary);
  position: relative;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(28,43,58,0.15), rgba(28,43,58,0.05));
  pointer-events: none;
}
.cta-box {
  position: relative;
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
  color: #fff;
}
.cta-box h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 14px;
  line-height: 1.3;
}
.cta-box p {
  font-size: 16px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 28px;
  line-height: 1.7;
}
.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}
.cta-link {
  color: rgba(255,255,255,0.8);
  font-size: 15px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
}
.cta-link:hover {
  color: #fff;
  gap: 10px;
}
.privacy-note {
  margin-top: 20px;
  font-size: 13px;
  color: rgba(255,255,255,0.6);
}

/* Footer */
.site-footer {
  background: #16283A;
  color: rgba(255,255,255,0.7);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand .logo {
  color: #fff;
  margin-bottom: 16px;
  font-size: 20px;
}
.footer-brand .logo i {
  color: #7A9CC6;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,0.6);
  max-width: 300px;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a,
.footer-contact li {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  transition: color 0.2s;
}
.footer-links a:hover {
  color: #fff;
}
.footer-contact {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-contact i {
  color: #7A9CC6;
  width: 18px;
  margin-right: 4px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

/* Responsive */
@media (max-width: 1200px) {
  .container { padding: 0 24px; }
  .related-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 1024px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .article-card { padding: 40px 36px; }
  .article-header h1 { font-size: 30px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --space-section: 56px; }
  .site-nav {
    top: 12px;
    width: calc(100% - 24px);
    border-radius: 20px;
  }
  .nav-container {
    padding: 10px 16px;
    flex-wrap: wrap;
  }
  .nav-menu {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    padding: 10px 0 4px;
    gap: 4px;
  }
  .nav-menu.open {
    display: flex;
  }
  .nav-link,
  .nav-btn {
    border-radius: 12px;
    text-align: center;
    padding: 12px 16px;
  }
  .nav-toggle {
    display: block;
  }
  .article-section { padding: 120px 0 40px; }
  .container-narrow { padding: 0 16px; }
  .article-card { padding: 32px 24px; border-radius: 16px; }
  .article-header h1 { font-size: 26px; }
  .article-meta { gap: 14px; font-size: 13px; }
  .article-content { font-size: 16px; }
  .article-content h2 { font-size: 22px; }
  .related-grid { grid-template-columns: 1fr; gap: 16px; }
  .cta-box h2 { font-size: 24px; }
  .cta-actions { flex-direction: column; }
  .cta-actions .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; padding-bottom: 32px; }
  .footer-brand p { max-width: 100%; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .article-section { padding: 110px 0 32px; }
  .article-card { padding: 24px 18px; }
  .article-header h1 { font-size: 22px; }
  .article-content { font-size: 15px; }
  .breadcrumb { font-size: 13px; }
  .section-head h2 { font-size: 24px; }
  .cta-box h2 { font-size: 22px; }
}

/* roulang page: category1 */
:root {
  --primary: #2B4C7E;
  --primary-hover: #1E3A5F;
  --primary-light: #E8EEF6;
  --accent: #B23A48;
  --accent-light: #F9E8EA;
  --bg: #F5F8FB;
  --surface: #FFFFFF;
  --text: #1C2B3A;
  --text-secondary: #5C6B7A;
  --border: #DDE6EE;
  --shadow-sm: 0 2px 8px rgba(28,43,58,0.06);
  --shadow-md: 0 10px 30px rgba(28,43,58,0.06);
  --shadow-lg: 0 16px 36px rgba(28,43,58,0.10);
  --shadow-modal: 0 24px 60px rgba(20,30,45,0.2);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --container: 1200px;
  --nav-height: 64px;
}

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

html {
  scroll-behavior: smooth;
}

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

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

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

input, textarea {
  font-family: inherit;
  font-size: 15px;
}

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

/* ========== Navigation ========== */
.site-nav {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 999px;
  box-shadow: 0 8px 30px rgba(28, 43, 58, 0.08);
  width: calc(100% - 32px);
  max-width: 1200px;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px 10px 28px;
  min-height: 56px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 0.5px;
  white-space: nowrap;
  flex-shrink: 0;
}

.logo i {
  font-size: 20px;
  color: var(--accent);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-link {
  padding: 8px 16px;
  border-radius: 999px;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  transition: background 0.2s, color 0.2s;
  white-space: nowrap;
  display: block;
}

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

.nav-link.active {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 700;
}

.nav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 22px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
  margin-left: 8px;
}

.nav-btn:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(43, 76, 126, 0.3);
  color: #fff;
}

.nav-toggle {
  display: none;
  font-size: 22px;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  color: var(--text);
  transition: background 0.2s;
}

.nav-toggle:hover {
  background: var(--primary-light);
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 600;
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
}

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

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(43, 76, 126, 0.25);
}

.btn-primary:focus-visible {
  outline: 3px solid rgba(43, 76, 126, 0.3);
  outline-offset: 2px;
}

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

.btn-accent:hover {
  background: #8E2C38;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(178, 58, 72, 0.25);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
  padding: 12px 28px;
}

.btn-outline:hover {
  background: var(--primary-light);
}

.btn-outline:focus-visible {
  outline: 3px solid rgba(43, 76, 126, 0.3);
  outline-offset: 2px;
}

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

.btn-white:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.btn-lg {
  padding: 16px 40px;
  font-size: 17px;
  border-radius: 12px;
}

/* ========== Hero ========== */
.page-hero {
  position: relative;
  padding: 160px 0 96px;
  background-color: var(--primary);
  overflow: hidden;
  min-height: 420px;
  display: flex;
  align-items: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(43, 76, 126, 0.85) 0%, rgba(43, 76, 126, 0.5) 50%, rgba(43, 76, 126, 0.15) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
  color: #fff;
}

.hero-content .hero-tag {
  display: inline-block;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 6px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 24px;
  letter-spacing: 1px;
  color: #E8EEF6;
}

.hero-content h1 {
  font-size: 46px;
  line-height: 1.2;
  font-weight: 800;
  margin-bottom: 20px;
  color: #fff;
  letter-spacing: 1px;
}

.hero-content p {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.9);
  max-width: 700px;
  margin: 0 auto;
}

/* ========== Split Section ========== */
.feature-split {
  padding: 96px 0;
  background: var(--surface);
}

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

.split-image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  aspect-ratio: 16 / 11;
}

.split-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.split-image:hover img {
  transform: scale(1.03);
}

.split-content .section-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-light);
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.split-content h2 {
  font-size: 30px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}

.split-content .lead-text {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 28px;
}

.feature-points {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.feature-point {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  background: var(--bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.feature-point:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.feature-point .feature-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.feature-point .feature-text {
  flex: 1;
}

.feature-point .feature-text strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 2px;
}

.feature-point .feature-text span {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ========== Info Cards ========== */
.info-cards {
  padding: 96px 0;
  background: var(--bg);
}

.section-head {
  text-align: center;
  margin-bottom: 48px;
}

.section-head .section-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-light);
  padding: 4px 16px;
  border-radius: 999px;
  margin-bottom: 14px;
  letter-spacing: 1px;
}

.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  margin-bottom: 10px;
}

.section-head p {
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 600px;
  margin: 0 auto;
}

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

.info-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  position: relative;
}

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

.info-card .info-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 20px;
}

.info-card h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}

.info-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.info-card .card-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 3px 12px;
  border-radius: 999px;
}

/* ========== Stats ========== */
.stats-section {
  padding: 80px 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats-heading {
  text-align: center;
  margin-bottom: 48px;
}

.stats-heading h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--text);
}

.stats-heading p {
  color: var(--text-secondary);
  font-size: 16px;
  margin-top: 8px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  max-width: 900px;
  margin: 0 auto;
}

.stat-item {
  text-align: center;
  padding: 28px 20px;
  background: var(--bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

.stat-number {
  font-size: 48px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.1;
  letter-spacing: -1px;
}

.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 8px;
}

/* ========== CTA ========== */
.cta-section {
  padding: 80px 0;
  background: var(--primary);
  position: relative;
  overflow: hidden;
}

.cta-section .container {
  text-align: center;
  color: #fff;
  position: relative;
  z-index: 2;
}

.cta-section h2 {
  font-size: 34px;
  font-weight: 800;
  margin-bottom: 12px;
  color: #fff;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 16px;
  max-width: 560px;
  margin: 0 auto 32px;
}

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

.cta-section .btn-accent:hover {
  background: #8E2C38;
}

/* ========== Footer ========== */
.site-footer {
  background: #16283A;
  padding: 64px 0 32px;
  color: rgba(255, 255, 255, 0.75);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand .logo {
  color: #fff;
  font-size: 20px;
  margin-bottom: 14px;
}

.footer-brand .logo i {
  color: var(--accent);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.65);
  max-width: 260px;
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}

.footer-links {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  transition: color 0.2s;
}

.footer-links a:hover {
  color: #fff;
}

.footer-contact {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
}

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

.footer-contact i {
  color: var(--accent);
  width: 16px;
  text-align: center;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
}

/* ========== Modal ========== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(20, 30, 45, 0.5);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--surface);
  border-radius: var(--radius-lg);
  max-width: 480px;
  width: 90%;
  padding: 40px;
  position: relative;
  box-shadow: var(--shadow-modal);
  transform: translateY(20px);
  transition: transform 0.3s ease;
}

.modal-overlay.open .modal {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text-secondary);
  background: var(--bg);
  transition: background 0.2s, color 0.2s;
}

.modal-close:hover {
  background: var(--accent-light);
  color: var(--accent);
}

.modal h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
}

.modal .modal-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  height: 44px;
  padding: 0 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  font-size: 15px;
  color: var(--text);
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

.form-group textarea {
  height: 96px;
  padding: 12px 14px;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(43, 76, 126, 0.15);
  background: #fff;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #AAB7C4;
}

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

.form-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.privacy-note {
  font-size: 13px;
  color: var(--text-secondary);
  text-align: center;
  margin-top: 16px;
  line-height: 1.6;
}

.success-msg {
  text-align: center;
  padding: 24px 0;
}

.success-msg i {
  font-size: 48px;
  color: #2A9D8F;
  margin-bottom: 12px;
}

.success-msg p {
  font-size: 16px;
  color: var(--text);
  font-weight: 500;
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .split-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-content h1 {
    font-size: 40px;
  }

  .info-card-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .info-card {
    padding: 24px 20px;
  }

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

@media (max-width: 768px) {
  .site-nav {
    top: 12px;
    border-radius: 24px;
  }

  .nav-container {
    padding: 12px 16px 12px 20px;
  }

  .nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
    border-radius: 20px;
    flex-direction: column;
    padding: 12px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
  }

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

  .nav-link {
    width: 100%;
    text-align: center;
    padding: 12px 16px;
    font-size: 15px;
  }

  .nav-btn {
    width: 100%;
    margin-left: 0;
    margin-top: 8px;
    padding: 12px;
  }

  .page-hero {
    min-height: 380px;
    padding: 130px 0 64px;
  }

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

  .hero-content p {
    font-size: 15px;
  }

  .feature-split,
  .info-cards {
    padding: 64px 0;
  }

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

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

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

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

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

  .stat-number {
    font-size: 38px;
  }

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

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

  .modal {
    width: 92%;
    padding: 32px 24px;
  }
}

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

  .site-nav {
    width: calc(100% - 16px);
    top: 8px;
  }

  .logo {
    font-size: 16px;
  }

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

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

  .page-hero {
    padding: 110px 0 48px;
  }

  .feature-point {
    padding: 14px;
  }

  .split-grid {
    gap: 28px;
  }

  .btn-lg {
    width: 100%;
    padding: 14px 24px;
  }

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

  .cta-section p {
    font-size: 14px;
  }

  .stat-number {
    font-size: 32px;
  }

  .footer-bottom {
    font-size: 12px;
    line-height: 1.6;
  }
}

/* roulang page: category2 */
:root {
  --primary: #2B4C7E;
  --primary-hover: #1E3A5F;
  --primary-soft: rgba(43, 76, 126, 0.08);
  --accent: #B23A48;
  --bg: #F5F8FB;
  --surface: #FFFFFF;
  --text: #1C2B3A;
  --text-muted: #5C6B7A;
  --border: #DDE6EE;
  --success: #2A9D8F;
  --warning: #E9C46A;
  --error: #D64545;
  --shadow-sm: 0 4px 14px rgba(28, 43, 58, 0.06);
  --shadow-md: 0 10px 30px rgba(28, 43, 58, 0.06);
  --shadow-lg: 0 16px 36px rgba(28, 43, 58, 0.10);
  --shadow-modal: 0 24px 60px rgba(20, 30, 45, 0.2);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --section-space: 88px;
  --container-max: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

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

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

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

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

button {
  font-family: inherit;
  cursor: pointer;
}

ul {
  list-style: none;
}

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

/* ===== 悬浮胶囊导航 ===== */
.site-nav {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 32px);
  max-width: 1080px;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: var(--radius-pill);
  box-shadow: 0 8px 30px rgba(28, 43, 58, 0.08);
  padding: 0 28px;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  position: relative;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 19px;
  font-weight: 800;
  color: var(--text);
  white-space: nowrap;
  letter-spacing: 0.5px;
}

.logo i {
  color: var(--primary);
  font-size: 22px;
}

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

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  transition: background 0.25s ease, color 0.25s ease;
}

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

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

.nav-btn {
  padding: 9px 22px;
  border-radius: var(--radius-pill);
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  margin-left: 8px;
  border: none;
  transition: background 0.25s ease, transform 0.2s ease, box-shadow 0.25s ease;
}

.nav-btn:hover {
  background: #942c38;
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(178, 58, 72, 0.3);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  color: var(--text);
  padding: 6px;
  border-radius: var(--radius-sm);
}

.nav-toggle:focus {
  outline: 3px solid rgba(43, 76, 126, 0.3);
  outline-offset: 2px;
}

/* ===== Hero 区域 ===== */
.page-hero {
  position: relative;
  min-height: 420px;
  padding: 160px 0 80px;
  background: linear-gradient(180deg, rgba(28, 43, 58, 0.82) 0%, rgba(43, 76, 126, 0.55) 60%, rgba(245, 248, 251, 0) 100%), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  display: flex;
  align-items: center;
}

.page-hero .container {
  position: relative;
  z-index: 2;
}

.page-hero-content {
  max-width: 720px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 18px;
}

.page-hero h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.22;
  color: #fff;
  letter-spacing: 1px;
  margin-bottom: 18px;
}

.page-hero p {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.92);
  max-width: 620px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 30px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  border: none;
  transition: background 0.25s ease, transform 0.2s ease, box-shadow 0.25s ease;
}

.btn:focus {
  outline: 3px solid rgba(43, 76, 126, 0.3);
  outline-offset: 2px;
}

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

.btn-primary:hover {
  background: var(--primary-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(43, 76, 126, 0.28);
}

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

.btn-accent:hover {
  background: #942c38;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(178, 58, 72, 0.28);
}

.btn-outline-light {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.6);
  color: #fff;
}

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

/* ===== 筛选标签区 ===== */
.filter-section {
  padding: 48px 0 20px;
}

.filter-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px 28px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  box-shadow: var(--shadow-sm);
}

.filter-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.filter-tag {
  font-size: 13px;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-weight: 500;
  cursor: default;
  user-select: none;
}

.filter-tag.active {
  background: var(--primary-soft);
  border-color: var(--primary);
  color: var(--primary);
  font-weight: 600;
}

/* ===== 内容卡片区 ===== */
.section-block {
  padding: 56px 0;
}

.section-head {
  margin-bottom: 40px;
  max-width: 680px;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-soft);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
  letter-spacing: 0.3px;
}

.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 12px;
}

.section-head p {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.7;
}

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

.guide-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-md);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

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

.guide-card-img {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: linear-gradient(135deg, #e8eef5, #d5dee8);
}

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

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

.guide-card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(28, 43, 58, 0) 65%, rgba(28, 43, 58, 0.18) 100%);
  pointer-events: none;
}

.card-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  background: rgba(255, 255, 255, 0.92);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  box-shadow: 0 2px 10px rgba(28, 43, 58, 0.08);
}

.guide-card-body {
  padding: 22px 24px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.guide-card-body .card-title {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 10px;
  color: var(--text);
}

.guide-card-body .card-text {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
  flex: 1;
  margin-bottom: 18px;
}

.card-meta {
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

.card-meta span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

/* ===== 流程图文交替区 ===== */
.process-section {
  padding: 80px 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.process-grid {
  display: flex;
  flex-direction: column;
  gap: 64px;
}

.process-item {
  display: flex;
  align-items: center;
  gap: 48px;
}

.process-item.reverse {
  flex-direction: row-reverse;
}

.process-img {
  width: 48%;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, #e8eef5, #d5dee8);
}

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

.process-text {
  width: 52%;
}

.process-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 16px;
}

.process-text h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
  line-height: 1.4;
}

.process-text p {
  color: var(--text-muted);
  line-height: 1.8;
}

/* ===== 横幅留白区 ===== */
.banner-break {
  position: relative;
  min-height: 300px;
  background: linear-gradient(180deg, rgba(28, 43, 58, 0.75) 0%, rgba(43, 76, 126, 0.65) 100%), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 24px;
}

.banner-content {
  max-width: 680px;
}

.banner-content h2 {
  font-size: 30px;
  color: #fff;
  font-weight: 700;
  margin-bottom: 14px;
  line-height: 1.4;
}

.banner-content p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 16px;
  line-height: 1.8;
}

/* ===== CTA 表单触发区 ===== */
.cta-section {
  padding: 80px 0;
  background: var(--primary);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -70px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
}

.cta-inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.cta-text {
  max-width: 580px;
}

.cta-text h2 {
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  line-height: 1.35;
  margin-bottom: 14px;
}

.cta-text p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 16px;
  line-height: 1.8;
}

.cta-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.cta-actions .privacy-note {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.65);
  text-align: center;
}

.cta-divider {
  width: 1px;
  align-self: stretch;
  background: rgba(255, 255, 255, 0.2);
}

/* ===== FAQ ===== */
.faq-section {
  padding: 80px 0;
}

.faq-head {
  text-align: center;
  margin-bottom: 44px;
}

.faq-head h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}

.faq-head p {
  color: var(--text-muted);
  font-size: 16px;
}

.faq-grid {
  max-width: 860px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  cursor: pointer;
  transition: box-shadow 0.25s ease, border-color 0.25s ease;
  height: fit-content;
}

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

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
}

.faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: background 0.3s ease, color 0.3s ease, transform 0.3s ease;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.7;
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding-top: 14px;
}

/* ===== 页脚 ===== */
.site-footer {
  background: #16283A;
  padding: 60px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 40px;
}

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

.footer-brand .logo {
  color: #fff;
  margin-bottom: 14px;
}

.footer-brand .logo i {
  color: #88A8D0;
}

.footer-brand p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.7;
  margin-top: 12px;
}

.footer-links li,
.footer-contact li {
  margin-bottom: 10px;
}

.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.25s ease;
}

.footer-links a:hover {
  color: #fff;
}

.footer-contact li {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-contact i {
  color: #88A8D0;
  width: 16px;
  text-align: center;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
}

/* ===== 表单弹层 ===== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(20, 30, 45, 0.5);
  backdrop-filter: blur(4px);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-overlay.show {
  display: flex;
}

.modal-box {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-modal);
  width: 100%;
  max-width: 480px;
  padding: 36px;
  position: relative;
  animation: modalIn 0.3s ease;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--bg);
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-size: 14px;
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease;
}

.modal-close:hover {
  background: var(--border);
}

.modal-box h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.modal-box > p {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 22px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  display: block;
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  height: 44px;
  padding: 10px 14px;
  font-size: 15px;
  font-family: inherit;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group textarea {
  height: 88px;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(43, 76, 126, 0.15);
}

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

.error-text {
  display: none;
  font-size: 13px;
  color: var(--error);
  margin-top: 4px;
}

.form-group.invalid .error-text {
  display: block;
}

.form-submit {
  width: 100%;
  height: 48px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  transition: background 0.25s ease, opacity 0.25s ease, transform 0.2s ease;
  margin-top: 4px;
}

.form-submit:hover {
  background: #942c38;
  transform: translateY(-1px);
}

.form-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.privacy-note {
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  margin-top: 16px;
  line-height: 1.6;
}

.modal-success {
  display: none;
  text-align: center;
  padding: 24px 0;
}

.modal-success.show {
  display: block;
}

.modal-success i {
  font-size: 52px;
  color: var(--success);
  margin-bottom: 16px;
}

.modal-success h4 {
  font-size: 20px;
  color: var(--text);
  margin-bottom: 10px;
}

.modal-success p {
  color: var(--text-muted);
  font-size: 14px;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  :root {
    --section-space: 64px;
  }

  .site-nav {
    width: calc(100% - 24px);
    padding: 0 20px;
  }

  .nav-menu {
    gap: 2px;
  }

  .nav-link {
    padding: 7px 12px;
    font-size: 13px;
  }

  .page-hero {
    padding: 140px 0 64px;
    min-height: 380px;
  }

  .page-hero h1 {
    font-size: 36px;
  }

  .process-item {
    flex-direction: column;
    gap: 24px;
  }

  .process-item.reverse {
    flex-direction: column;
  }

  .process-img,
  .process-text {
    width: 100%;
  }

  .cta-inner {
    flex-direction: column;
    text-align: center;
  }

  .cta-divider {
    display: none;
  }

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

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: 84px;
    left: 16px;
    right: 16px;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(16px);
    border-radius: var(--radius-md);
    flex-direction: column;
    padding: 16px;
    gap: 6px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
    display: none;
  }

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

  .nav-link {
    width: 100%;
    padding: 12px 16px;
    font-size: 15px;
    border-radius: 10px;
  }

  .nav-btn {
    width: 100%;
    margin-left: 0;
    margin-top: 4px;
    text-align: center;
    padding: 12px;
  }

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

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

  .section-block {
    padding: 40px 0;
  }

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

  .banner-break {
    min-height: 240px;
  }

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

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

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

  .modal-box {
    border-radius: 0;
    max-width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 32px 24px;
  }

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

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

  .page-hero {
    padding: 130px 0 48px;
    min-height: 360px;
  }

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

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

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .filter-wrap {
    padding: 16px;
  }

  .filter-tag {
    font-size: 12px;
    padding: 5px 12px;
  }

  .guide-card-body {
    padding: 18px 18px 20px;
  }

  .guide-card-body .card-title {
    font-size: 17px;
  }

  .card-meta {
    flex-direction: column;
    gap: 8px;
  }

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

  .process-item {
    gap: 20px;
  }

  .process-text h3 {
    font-size: 19px;
  }

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

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

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

  .faq-item {
    padding: 18px 18px;
  }

  .site-footer {
    padding-top: 48px;
  }
}

/* roulang page: category3 */
:root {
  --primary: #2B4C7E;
  --primary-hover: #1E3A5F;
  --primary-light: #E8EEF5;
  --accent: #B23A48;
  --success: #2A9D8F;
  --warning: #E9C46A;
  --error: #D64545;
  --bg: #F5F8FB;
  --surface: #FFFFFF;
  --text: #1C2B3A;
  --text-secondary: #5C6B7A;
  --border: #DDE6EE;
  --shadow-sm: 0 2px 10px rgba(28,43,58,0.05);
  --shadow-md: 0 10px 30px rgba(28,43,58,0.06);
  --shadow-lg: 0 16px 36px rgba(28,43,58,0.10);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --container: 1200px;
  --transition: all 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

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

a:focus-visible {
  outline: 3px solid rgba(43, 76, 126, 0.4);
  outline-offset: 2px;
  border-radius: 4px;
}

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

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

input,
textarea {
  font-family: inherit;
  font-size: 15px;
}

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

.section-pad {
  padding: 88px 0;
}

/* ===== 导航 ===== */
.site-nav {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  width: calc(100% - 32px);
  max-width: var(--container);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 999px;
  box-shadow: 0 8px 30px rgba(28, 43, 58, 0.08);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 20px 0 28px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: 0.5px;
}

.logo i {
  color: var(--primary);
  font-size: 20px;
}

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

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
  transition: var(--transition);
}

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

.nav-link.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(43, 76, 126, 0.25);
}

.nav-btn {
  background: var(--accent);
  color: #fff;
  padding: 8px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  margin-left: 8px;
  white-space: nowrap;
  transition: var(--transition);
}

.nav-btn:hover {
  background: #992f3b;
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(178, 58, 72, 0.3);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text);
  transition: var(--transition);
}

.nav-toggle:hover {
  background: var(--primary-light);
  color: var(--primary);
}

/* ===== Hero ===== */
.hero {
  min-height: 560px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  padding: 140px 24px 80px;
  background: url("/assets/images/backpic/back-2.png") center / cover no-repeat;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(43, 76, 126, 0.82) 0%, rgba(43, 76, 126, 0.55) 50%, rgba(43, 76, 126, 0.2) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 820px;
}

.hero h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.2;
  color: #fff;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.hero p {
  font-size: 17px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.92);
  margin-bottom: 32px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  transition: var(--transition);
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(43, 76, 126, 0.25);
}

.btn-primary:hover {
  background: var(--primary-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(43, 76, 126, 0.32);
}

.btn-primary:focus-visible {
  outline: 3px solid rgba(255, 255, 255, 0.5);
  outline-offset: 2px;
}

.btn-outline {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.75);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.22);
  color: #fff;
  transform: translateY(-2px);
}

.btn-accent {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(178, 58, 72, 0.28);
}

.btn-accent:hover {
  background: #992f3b;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(178, 58, 72, 0.35);
}

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

.btn-white:hover {
  background: var(--primary-light);
  color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ===== 交替图文 ===== */
.alt-section {
  padding: 88px 0;
  background: var(--surface);
}

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

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

.alt-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  position: relative;
}

.alt-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.alt-section:hover .alt-image img {
  transform: scale(1.02);
}

.alt-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.alt-content h2 {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 16px;
}

.alt-content > p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.alt-list {
  list-style: none;
  margin: 0 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.alt-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  color: var(--text);
  padding: 8px 12px;
  background: var(--bg);
  border-radius: var(--radius-sm);
}

.alt-list li i {
  color: var(--primary);
  font-size: 14px;
  width: 18px;
  text-align: center;
}

.alt-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  transition: var(--transition);
}

.alt-link:hover {
  color: var(--primary-hover);
  gap: 10px;
}

.alt-section.flip .alt-grid .alt-content {
  order: 1;
}

.alt-section.flip .alt-grid .alt-image {
  order: 2;
}

/* ===== 横幅 ===== */
.cta-banner {
  position: relative;
  padding: 100px 24px;
  text-align: center;
  background: url("/assets/images/backpic/back-3.webp") center / cover fixed no-repeat;
}

.cta-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(28, 43, 58, 0.65);
}

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

.cta-banner h2 {
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
  line-height: 1.3;
}

.cta-banner p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 28px;
}

/* ===== 表单预约区 ===== */
.contact-section {
  padding: 96px 0;
  background: var(--primary);
  color: #fff;
  position: relative;
}

.contact-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
}

.contact-content h2 {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 14px;
}

.contact-content p {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 20px;
}

.contact-privacy {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.65);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
}

.contact-privacy i {
  font-size: 14px;
}

.contact-cta {
  text-align: center;
}

.contact-cta .btn {
  font-size: 16px;
  padding: 14px 32px;
}

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

.faq-head {
  text-align: center;
  margin-bottom: 48px;
}

.faq-head h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--text);
}

.faq-head p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-top: 8px;
}

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

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}

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

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

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

.faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 600;
  line-height: 1;
  transition: var(--transition);
}

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

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

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
}

/* ===== 表单弹层 ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(20, 30, 45, 0.5);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 20px;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.modal-overlay.open {
  display: flex;
}

.modal-box {
  background: var(--surface);
  border-radius: var(--radius-lg);
  max-width: 480px;
  width: 100%;
  padding: 40px;
  box-shadow: 0 24px 60px rgba(20, 30, 45, 0.2);
  position: relative;
  animation: modalIn 0.3s ease;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: translateY(24px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 16px;
  transition: var(--transition);
}

.modal-close:hover {
  background: var(--bg);
  color: var(--accent);
}

.modal-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.modal-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  height: 44px;
  padding: 0 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  background: var(--bg);
  transition: var(--transition);
}

.form-group textarea {
  height: 88px;
  padding: 12px 14px;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(43, 76, 126, 0.15);
  background: #fff;
}

.form-group .error-msg {
  font-size: 13px;
  color: var(--error);
  margin-top: 6px;
  display: none;
}

.form-group.has-error input,
.form-group.has-error textarea {
  border-color: var(--error);
}

.form-group.has-error .error-msg {
  display: block;
}

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

.modal-privacy {
  font-size: 13px;
  color: var(--text-secondary);
  text-align: center;
  margin-top: 16px;
}

.modal-success {
  display: none;
  text-align: center;
  padding: 24px 0;
}

.modal-success.show {
  display: block;
}

.modal-success .success-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--success);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
}

.modal-success h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}

.modal-success p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ===== 页脚 ===== */
.site-footer {
  background: #16283A;
  color: rgba(255, 255, 255, 0.8);
  padding: 64px 0 24px;
}

.site-footer .logo {
  color: #fff;
  font-size: 20px;
  margin-bottom: 12px;
}

.site-footer .logo i {
  color: rgba(255, 255, 255, 0.9);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 8px;
}

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

.footer-links,
.footer-contact {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-links li,
.footer-contact li {
  margin-bottom: 10px;
  font-size: 14px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
}

.footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}

.footer-contact li {
  color: rgba(255, 255, 255, 0.6);
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-contact i {
  color: rgba(255, 255, 255, 0.4);
  width: 16px;
  text-align: center;
}

.footer-bottom {
  text-align: center;
  padding-top: 24px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .section-pad {
    padding: 72px 0;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .contact-privacy {
    justify-content: center;
  }

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

  .alt-grid {
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .site-nav {
    top: 12px;
  }

  .nav-container {
    height: 60px;
    padding-left: 20px;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
    border-radius: 24px;
    padding: 16px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
  }

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

  .nav-link {
    padding: 12px 16px;
    font-size: 15px;
  }

  .nav-btn {
    margin-left: 0;
    text-align: center;
    padding: 12px 16px;
  }

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

  .hero {
    min-height: 500px;
    padding-top: 120px;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero p {
    font-size: 16px;
  }

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

  .alt-section.flip .alt-grid .alt-content,
  .alt-section.flip .alt-grid .alt-image {
    order: initial;
  }

  .alt-image img {
    height: 280px;
  }

  .alt-list {
    grid-template-columns: 1fr;
  }

  .cta-banner {
    padding: 80px 16px;
    background-attachment: scroll;
  }

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

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

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

  .modal-overlay {
    padding: 0;
  }

  .modal-box {
    max-width: none;
    width: 100%;
    height: 100%;
    border-radius: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 40px 28px;
  }
}

@media (max-width: 520px) {
  .section-pad {
    padding: 48px 0;
  }

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

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

  .alt-section {
    padding: 48px 0;
  }

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

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

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

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

  .faq-item {
    margin-bottom: 12px;
  }

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

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

  .btn {
    padding: 12px 20px;
  }
}