/* roulang page: index */
:root {
  --primary: #2F3437;
  --primary-dark: #23272A;
  --accent: #FF6B35;
  --accent-hover: #E55A2B;
  --accent-soft: #FFF0EA;
  --accent-grad: linear-gradient(135deg, #FF6B35, #FF4D6D);
  --secondary: #2EC4B6;
  --secondary-soft: #E7F8F5;
  --gray-soft: #F0F1F3;
  --bg: #FAF8F5;
  --bg-gray: #F2F0ED;
  --card: #FFFFFF;
  --border: #EFEDEA;
  --text: #2F3437;
  --text-light: #6B7280;
  --text-lighter: #9CA3AF;
  --radius-xl: 24px;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 10px;
  --radius-pill: 999px;
  --shadow-sm: 0 4px 20px rgba(47,52,55,0.06);
  --shadow-md: 0 4px 20px rgba(47,52,55,0.08);
  --shadow-lg: 0 12px 32px rgba(47,52,55,0.14);
  --transition: all 0.3s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--text); text-decoration: none; transition: var(--transition); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-label {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 12px;
  color: var(--text);
}
.section-subtitle { font-size: 16px; color: var(--text-light); max-width: 600px; margin-bottom: 40px; }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  transition: var(--transition);
  border: 1.5px solid transparent;
  cursor: pointer;
  text-align: center;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); box-shadow: 0 8px 20px rgba(255,107,53,0.3); transform: translateY(-2px); }
.btn-primary:active { transform: scale(0.97); }
.btn-secondary { background: transparent; color: var(--text); border-color: rgba(47,52,55,0.25); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.btn-secondary:active { transform: scale(0.97); }
.btn-sm { padding: 10px 18px; font-size: 14px; }
.btn-dark { background: var(--primary); color: #fff; }
.btn-dark:hover { background: var(--primary-dark); transform: translateY(-2px); }

/* 导航 */
.site-header {
  position: sticky;
  top: 16px;
  z-index: 100;
  padding: 0 24px;
}
.nav-panel {
  max-width: 1200px;
  margin: 0 auto;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-radius: 18px;
  box-shadow: var(--shadow-md);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 24px;
  border: 1px solid rgba(239,237,234,0.6);
}
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-mark {
  width: 40px; height: 40px;
  background: var(--primary);
  color: #fff;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.5px;
}
.logo-text {
  font-size: 18px;
  font-weight: 800;
  color: var(--text);
  line-height: 1.2;
}
.logo-text span { color: var(--accent); }
.main-nav { display: flex; align-items: center; gap: 8px; flex: 1; justify-content: center; }
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  transition: var(--transition);
  white-space: nowrap;
}
.nav-link:hover { background: var(--gray-soft); color: var(--text); }
.nav-link.active { background: var(--accent-soft); color: var(--accent); }
.nav-cta { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.nav-cta .btn { white-space: nowrap; }
.mobile-toggle { display: none; width: 40px; height: 40px; border-radius: 8px; background: var(--gray-soft); align-items: center; justify-content: center; flex-direction: column; gap: 4px; }
.mobile-toggle span { width: 18px; height: 2px; background: var(--text); border-radius: 2px; transition: var(--transition); }
.mobile-menu {
  position: fixed;
  top: 0; left: 0; right: 0;
  background: var(--card);
  border-radius: 0 0 24px 24px;
  box-shadow: var(--shadow-lg);
  padding: 80px 24px 24px;
  z-index: 99;
  transform: translateY(-100%);
  opacity: 0;
  transition: var(--transition);
  visibility: hidden;
}
.mobile-menu.open { transform: translateY(0); opacity: 1; visibility: visible; }
.mobile-menu .nav-link { display: block; padding: 14px 16px; margin-bottom: 8px; font-size: 16px; }
.mobile-menu .nav-link.active { background: var(--accent-soft); }
.mobile-menu .btn { width: 100%; margin-bottom: 12px; }
.mobile-menu .nav-cta { flex-direction: column; margin-top: 16px; }

/* Hero */
.hero { position: relative; padding: 72px 0 80px; overflow: hidden; }
.hero::before {
  content: '';
  position: absolute;
  right: -120px;
  top: -80px;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(255,107,53,0.12) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero-inner { display: grid; grid-template-columns: 7fr 5fr; gap: 48px; align-items: center; position: relative; z-index: 1; }
.hero-copy { max-width: 620px; }
.hero h1 { font-size: clamp(32px, 5vw, 52px); line-height: 1.3; font-weight: 700; margin-bottom: 20px; color: var(--text); }
.hero h1 .highlight { color: var(--accent); }
.hero-desc { font-size: 17px; color: var(--text-light); line-height: 1.8; margin-bottom: 32px; max-width: 480px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 32px; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 20px; font-size: 14px; color: var(--text-light); }
.hero-trust span { display: inline-flex; align-items: center; gap: 6px; }
.hero-trust strong { color: var(--text); font-weight: 700; }
.hero-visual { position: relative; }
.hero-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  background: var(--card);
  height: 420px;
}
.hero-card img { width: 100%; height: 100%; object-fit: cover; }
.hero-card::after { content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 40%; background: linear-gradient(to top, rgba(35,39,42,0.7), transparent); pointer-events: none; }
.online-badge {
  position: absolute;
  top: 20px; left: 20px;
  background: var(--secondary);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  z-index: 2;
  box-shadow: 0 4px 12px rgba(46,196,182,0.4);
}
.online-badge::before { content: ''; width: 6px; height: 6px; background: #fff; border-radius: 50%; }
.hero-card-info {
  position: absolute;
  bottom: 20px; left: 20px; right: 20px;
  background: rgba(35,39,42,0.75);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  color: rgba(255,255,255,0.9);
  font-size: 14px;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.hero-card-info .metric { font-size: 18px; font-weight: 700; color: #fff; }
.hero-card-info .percent { color: var(--accent); }

/* 痛点区 */
.pain-section { background: var(--bg-gray); border-radius: var(--radius-lg); padding: 48px; margin: 0 0 80px; }
.pain-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.pain-card {
  background: var(--card);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  cursor: pointer;
}
.pain-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.pain-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--accent);
}
.pain-icon svg { width: 22px; height: 22px; }
.pain-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 6px; color: var(--text); }
.pain-card p { font-size: 14px; color: var(--text-light); line-height: 1.6; }
.pain-arrow { margin-left: auto; align-self: center; color: var(--text-lighter); font-size: 20px; transition: var(--transition); }
.pain-card:hover .pain-arrow { transform: translateX(4px); color: var(--accent); }

/* 方案卡 */
.solutions-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.solution-card {
  background: var(--card);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}
.solution-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: rgba(255,107,53,0.3); }
.solution-num {
  position: absolute;
  top: 20px; right: 24px;
  font-size: 48px;
  font-weight: 800;
  color: rgba(47,52,55,0.06);
  line-height: 1;
}
.solution-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.solution-icon.grad-orange { background: var(--accent-soft); color: var(--accent); }
.solution-icon.grad-green { background: var(--secondary-soft); color: var(--secondary); }
.solution-icon.grad-gray { background: var(--gray-soft); color: var(--primary); }
.solution-icon svg { width: 26px; height: 26px; }
.solution-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; color: var(--text); }
.solution-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; flex: 1; margin-bottom: 20px; }
.solution-link { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--text); }
.solution-link .arrow { transition: var(--transition); }
.solution-card:hover .solution-link { color: var(--accent); }
.solution-card:hover .solution-link .arrow { transform: translateX(4px); }
.solution-footer { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border); font-size: 13px; color: var(--text-lighter); }

/* 数据区 */
.data-section { background: var(--primary); border-radius: var(--radius-lg); padding: 48px; margin-bottom: 80px; position: relative; overflow: hidden; }
.data-section::before { content: ''; position: absolute; top: -80px; right: -80px; width: 240px; height: 240px; background: radial-gradient(circle, rgba(255,107,53,0.25), transparent 70%); border-radius: 50%; }
.data-tag {
  display: inline-block;
  background: rgba(255,107,53,0.18);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 32px;
}
.data-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; margin-bottom: 32px; }
.data-item { text-align: center; }
.data-item .number {
  font-size: 40px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 8px;
}
.data-item .number em { font-style: normal; color: var(--accent); font-size: 28px; margin-left: 2px; }
.data-item .label { font-size: 14px; color: rgba(255,255,255,0.6); }
.data-quote {
  text-align: center;
  color: rgba(255,255,255,0.8);
  font-size: 16px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
}

/* CTA横幅 */
.cta-banner {
  background: linear-gradient(135deg, #FFF0EA, #FFE3D6);
  border-radius: 18px;
  padding: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 80px;
  flex-wrap: wrap;
}
.cta-banner h3 { font-size: 24px; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.cta-banner p { font-size: 15px; color: var(--text-light); }

/* 最新动态 */
.news-header { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 32px; gap: 16px; flex-wrap: wrap; }
.news-link { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--text); }
.news-link:hover { color: var(--accent); }
.news-link .arrow { transition: var(--transition); }
.news-link:hover .arrow { transform: translateX(4px); }
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.news-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  height: 100%;
}
.news-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.news-thumb { position: relative; aspect-ratio: 16/9; overflow: hidden; background: var(--gray-soft); }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.news-card:hover .news-thumb img { transform: scale(1.03); }
.news-tag {
  position: absolute;
  top: 12px; left: 12px;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
}
.news-body { padding: 20px 24px 24px; display: flex; flex-direction: column; flex: 1; }
.news-title { font-size: 17px; font-weight: 700; color: var(--text); line-height: 1.4; margin-bottom: 10px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-excerpt { font-size: 14px; color: var(--text-light); line-height: 1.7; margin-bottom: 16px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; flex: 1; }
.news-meta { display: flex; align-items: center; gap: 12px; font-size: 12px; color: var(--text-lighter); margin-bottom: 12px; }
.news-read { font-size: 14px; font-weight: 600; color: var(--text); display: inline-flex; align-items: center; gap: 6px; }
.news-read:hover { color: var(--accent); }
.news-empty {
  grid-column: 1 / -1;
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-gray);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px;
  text-align: center;
  color: var(--text-lighter);
  font-size: 15px;
}
.news-empty svg { width: 42px; height: 42px; margin-bottom: 12px; color: var(--text-lighter); }

/* FAQ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  padding: 20px 24px;
  margin-bottom: 12px;
  cursor: pointer;
  transition: var(--transition);
}
.faq-item:hover { box-shadow: var(--shadow-sm); border-color: rgba(255,107,53,0.3); }
.faq-item.open { box-shadow: var(--shadow-sm); }
.faq-question { display: flex; align-items: center; justify-content: space-between; gap: 16px; font-size: 16px; font-weight: 700; color: var(--text); }
.faq-toggle {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--gray-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 400;
  transition: var(--transition);
  flex-shrink: 0;
}
.faq-item.open .faq-toggle { transform: rotate(45deg); background: var(--accent-soft); color: var(--accent); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease, opacity 0.3s ease;
  opacity: 0;
  padding-top: 0;
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.8;
}
.faq-item.open .faq-answer { max-height: 300px; opacity: 1; padding-top: 14px; }

/* 底部CTA */
.final-cta { background: var(--primary-dark); border-radius: var(--radius-lg); padding: 64px 48px; text-align: center; margin-bottom: 80px; position: relative; overflow: hidden; }
.final-cta::before { content: ''; position: absolute; bottom: -60px; left: -60px; width: 200px; height: 200px; background: radial-gradient(circle, rgba(255,107,53,0.3), transparent 70%); }
.final-cta h2 { font-size: clamp(22px, 3vw, 32px); color: #fff; font-weight: 700; margin-bottom: 12px; position: relative; z-index: 1; }
.final-cta p { font-size: 15px; color: rgba(255,255,255,0.7); margin-bottom: 28px; position: relative; z-index: 1; }

/* Footer */
.site-footer { background: var(--primary-dark); color: rgba(255,255,255,0.7); padding: 64px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 48px; }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand .logo-mark { background: var(--accent); }
.footer-brand .logo-text { color: #fff; }
.footer-desc { font-size: 14px; line-height: 1.7; margin-bottom: 20px; max-width: 280px; }
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.7);
  font-size: 15px;
  transition: var(--transition);
}
.footer-social a:hover { background: var(--accent); color: #fff; transform: translateY(-2px); }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 16px; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: rgba(255,255,255,0.6); font-size: 14px; transition: var(--transition); }
.footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-contact p { font-size: 14px; margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.footer-contact svg { width: 16px; height: 16px; color: var(--accent); flex-shrink: 0; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: var(--accent); }

/* 表单弹窗 */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.6);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
  backdrop-filter: blur(4px);
}
.modal-overlay.active { display: flex; opacity: 1; }
.modal {
  width: 520px;
  max-width: calc(100vw - 32px);
  max-height: 90vh;
  overflow-y: auto;
  background: var(--card);
  border-radius: var(--radius-xl);
  position: relative;
  transform: translateY(20px);
  transition: transform 0.3s ease;
  box-shadow: 0 24px 48px rgba(0,0,0,0.2);
}
.modal-overlay.active .modal { transform: translateY(0); }
.modal::before { content: ''; display: block; height: 6px; background: var(--accent-grad); border-radius: var(--radius-xl) var(--radius-xl) 0 0; }
.modal-close {
  position: absolute;
  top: 18px; right: 18px;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--gray-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text);
  transition: var(--transition);
  z-index: 2;
}
.modal-close:hover { background: var(--accent); color: #fff; transform: rotate(90deg); }
.modal-body { padding: 32px; }
.modal-body h3 { font-size: 22px; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.modal-body .modal-sub { font-size: 14px; color: var(--text-light); 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%;
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--text);
  transition: var(--transition);
  background: var(--bg);
}
.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(255,107,53,0.15);
  background: #fff;
}
.form-group textarea { min-height: 90px; resize: vertical; }
.form-submit { width: 100%; margin-top: 8px; }
.form-privacy {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-lighter);
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.form-privacy svg { width: 14px; height: 14px; color: var(--secondary); flex-shrink: 0; }

/* 响应式 */
@media (max-width: 1023px) {
  .main-nav { display: none; }
  .nav-cta .btn-ghost { display: none; }
  .mobile-toggle { display: flex; }
  .hero-inner { grid-template-columns: 1fr; gap: 32px; }
  .hero-visual { max-width: 560px; margin: 0 auto; }
  .solutions-grid { grid-template-columns: 1fr 1fr; }
  .solution-card:last-child { grid-column: 1 / -1; }
  .data-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 767px) {
  .container { padding: 0 16px; }
  .section { padding: 48px 0; }
  .site-header { top: 8px; padding: 0 12px; }
  .nav-panel { padding: 10px 14px; }
  .logo-text { font-size: 16px; }
  .logo-mark { width: 34px; height: 34px; font-size: 14px; }
  .nav-cta .btn { display: none; }
  .pain-section { padding: 32px 20px; }
  .pain-grid { grid-template-columns: 1fr; }
  .solutions-grid { grid-template-columns: 1fr; }
  .solution-card:last-child { grid-column: auto; }
  .data-section { padding: 32px 24px; }
  .data-grid { grid-template-columns: 1fr 1fr; gap: 24px 16px; }
  .data-item .number { font-size: 32px; }
  .cta-banner { padding: 32px 24px; flex-direction: column; text-align: center; }
  .news-grid { grid-template-columns: 1fr; }
  .news-header { flex-direction: column; align-items: flex-start; }
  .final-cta { padding: 48px 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero { padding: 40px 0 56px; }
  .hero-card { height: 320px; }
  .hero-trust { gap: 12px; font-size: 13px; }
  .modal-body { padding: 24px; }
}

/* 信息条 */
.notice-bar {
  background: var(--bg-gray);
  border-radius: var(--radius-sm);
  padding: 8px 20px;
  font-size: 13px;
  color: var(--text-light);
  text-align: center;
  margin-top: 16px;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}
.notice-bar strong { color: var(--accent); }

/* 过程条装饰 */
.progress-bar { height: 3px; border-radius: var(--radius-pill); background: var(--gray-soft); margin-top: 16px; overflow: hidden; }
.progress-bar span { display: block; height: 100%; border-radius: var(--radius-pill); background: var(--accent-grad); }

/* roulang page: category1 */
:root {
  --color-primary: #2F3437;
  --color-primary-dark: #2A2E31;
  --color-accent: #FF6B35;
  --color-accent-dark: #E55A2B;
  --color-mint: #2EC4B6;
  --color-coral: #FF4D6D;
  --color-bg: #FAF8F5;
  --color-bg-gray: #F2F0ED;
  --color-white: #FFFFFF;
  --color-border: #EFEDEA;
  --color-text: #2F3437;
  --color-text-light: #6B7074;
  --color-text-faint: #9BA0A3;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --radius-pill: 999px;
  --shadow-sm: 0 4px 20px rgba(47,52,55,0.08);
  --shadow-md: 0 8px 28px rgba(47,52,55,0.10);
  --shadow-hover: 0 12px 32px rgba(47,52,55,0.14);
  --spacing-section: 88px;
  --spacing-section-mobile: 56px;
  --container-width: 1200px;
  --font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
  font-size: 16px;
}

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

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

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

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

/* ========== 导航 ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 16px 0 10px;
  background: rgba(250,248,245,0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.main-nav {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 10px 20px;
  background: var(--color-white);
  border-radius: 18px;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

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

.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-coral));
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0.5px;
}

.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.2px;
}

.logo-text .logo-tag {
  font-size: 12px;
  font-weight: 400;
  color: var(--color-text-light);
  margin-left: 4px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  background: transparent;
  transition: all 0.25s ease;
}

.nav-link:hover {
  background: var(--color-bg-gray);
  color: var(--color-accent-dark);
}

.nav-link.active {
  background: #FFF0EA;
  color: var(--color-accent);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  line-height: 1.4;
}

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

.btn-primary:hover {
  background: var(--color-accent-dark);
  box-shadow: 0 8px 20px rgba(255,107,53,0.3);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: scale(0.97);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-text);
  padding: 10px 22px;
}

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

.nav-side {
  display: none;
}

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

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

/* 移动端菜单 */
.mobile-menu {
  display: none;
  position: fixed;
  top: 70px;
  left: 16px;
  right: 16px;
  background: var(--color-white);
  border-radius: 18px;
  box-shadow: var(--shadow-md);
  padding: 20px;
  z-index: 99;
  flex-direction: column;
  gap: 8px;
}

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

.mobile-menu a {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  color: var(--color-text);
}

.mobile-menu a:hover {
  background: var(--color-bg-gray);
}

.mobile-menu a.active {
  background: #FFF0EA;
  color: var(--color-accent);
}

/* ========== Hero ========== */
.category-hero {
  padding: 72px 0 64px;
  background: var(--color-bg);
  position: relative;
  overflow: hidden;
}

.category-hero::after {
  content: "";
  position: absolute;
  right: -100px;
  top: -100px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,107,53,0.18) 0%, transparent 65%);
  pointer-events: none;
}

.hero-wrap {
  display: flex;
  align-items: center;
  gap: 48px;
  position: relative;
  z-index: 2;
}

.hero-content {
  flex: 1 1 55%;
}

.hero-visual {
  flex: 1 1 45%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #FFF0EA;
  color: var(--color-accent);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 18px;
}

.hero-badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}

.hero-title {
  font-size: clamp(30px, 4vw, 42px);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.hero-title .highlight {
  color: var(--color-accent);
}

.hero-desc {
  font-size: 16px;
  color: var(--color-text-light);
  line-height: 1.8;
  max-width: 520px;
  margin-bottom: 28px;
}

.hero-btns {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-meta {
  margin-top: 28px;
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 13px;
  color: var(--color-text-faint);
  flex-wrap: wrap;
}

.hero-meta .dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--color-text-faint);
}

.hero-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  position: relative;
}

.hero-card img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

.hero-card-info {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 16px;
  background: rgba(47,52,55,0.82);
  backdrop-filter: blur(8px);
  border-radius: 14px;
  padding: 14px 18px;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.hero-card-info .status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--color-mint);
}

.hero-card-info .status::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-mint);
}

.hero-card-info .uptime {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-mint);
}

/* ========== 通用区块 ========== */
.section {
  padding: var(--spacing-section) 0;
}

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

.section-dark {
  background: var(--color-primary);
}

.section-head {
  max-width: 680px;
  margin-bottom: 44px;
}

.section-head h2 {
  font-size: clamp(26px, 3.4vw, 34px);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 12px;
}

.section-head p {
  color: var(--color-text-light);
  font-size: 15px;
}

.section-label {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: #FFF0EA;
  color: var(--color-accent);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 14px;
}

/* ========== 核心能力 ========== */
.mode-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.mode-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.mode-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(255,107,53,0.3);
}

.mode-card .mode-index {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-border);
  line-height: 1;
  margin-bottom: 20px;
  font-style: italic;
  transition: color 0.3s ease;
}

.mode-card:hover .mode-index {
  color: var(--color-accent);
}

.mode-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.mode-icon.orange {
  background: #FFF0EA;
  color: var(--color-accent);
}

.mode-icon.mint {
  background: #E7F8F5;
  color: var(--color-mint);
}

.mode-icon.gray {
  background: #F0F1F3;
  color: var(--color-primary);
}

.mode-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.mode-card p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
}

.mode-card .mode-tag {
  display: inline-block;
  margin-top: 14px;
  font-size: 12px;
  color: var(--color-accent);
  background: #FFF0EA;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
}

/* ========== 场景 ========== */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.scene-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 26px 22px;
  border: 1px solid var(--color-border);
  transition: all 0.3s ease;
}

.scene-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.scene-card .scene-num {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-mint);
  background: #E7F8F5;
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
}

.scene-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.scene-card p {
  font-size: 14px;
  color: var(--color-text-light);
}

/* ========== 流程 ========== */
.process-wrap {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow-sm);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  position: relative;
}

.process-steps::before {
  content: "";
  position: absolute;
  top: 27px;
  left: 60px;
  right: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-mint) 100%);
  z-index: 0;
  border-radius: 2px;
}

.process-step {
  position: relative;
  z-index: 1;
  text-align: center;
}

.process-step .step-dot {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: var(--color-white);
  border: 2px solid var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
  font-size: 18px;
  font-weight: 800;
  color: var(--color-accent);
  box-shadow: 0 0 0 5px rgba(255,107,53,0.12);
}

.process-step .step-dot.mint {
  border-color: var(--color-mint);
  color: var(--color-mint);
  box-shadow: 0 0 0 5px rgba(46,196,182,0.12);
}

.process-step h3 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 4px;
}

.process-step p {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ========== 数据 ========== */
.stats-panel {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 44px 48px;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.stats-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-mint));
}

.stats-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
}

.stats-head .stats-label {
  display: inline-flex;
  align-items: center;
  background: #FFF0EA;
  color: var(--color-accent);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
}

.stats-head p {
  font-size: 14px;
  color: var(--color-text-light);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-item {
  text-align: center;
  padding: 20px 12px;
  border-radius: var(--radius-md);
  background: var(--color-bg-gray);
}

.stat-number {
  font-size: 38px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: 4px;
}

.stat-number .accent {
  color: var(--color-accent);
}

.stat-label {
  font-size: 14px;
  color: var(--color-text-light);
}

.stats-quote {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px dashed var(--color-border);
  font-size: 14px;
  color: var(--color-text-light);
  font-style: italic;
  display: flex;
  align-items: center;
  gap: 10px;
}

.stats-quote::before {
  content: "";
  width: 4px;
  height: 28px;
  border-radius: 2px;
  background: var(--color-accent);
}

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

.faq-item {
  background: var(--color-white);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-item summary {
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: background 0.3s ease;
  user-select: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary:hover {
  background: #FFF8F4;
}

.faq-item summary .faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-bg-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--color-text-light);
  flex-shrink: 0;
  transition: all 0.3s ease;
}

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

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

.faq-answer {
  padding: 18px 24px;
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* ========== CTA ========== */
.cta-banner {
  background: linear-gradient(135deg, #FFF0EA 0%, #FFE3D6 60%);
  border-radius: var(--radius-lg);
  padding: 48px 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.cta-banner h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.cta-banner p {
  font-size: 15px;
  color: var(--color-text-light);
}

.cta-banner .btn {
  background: var(--color-accent);
  color: #fff;
  white-space: nowrap;
}

.cta-banner .btn:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255,107,53,0.3);
}

/* ========== 表单弹层 ========== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

.modal-card {
  position: relative;
  width: 520px;
  max-width: calc(100vw - 32px);
  max-height: 90vh;
  overflow-y: auto;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-hover);
  padding: 36px;
  transform: translateY(20px);
  transition: transform 0.3s ease;
}

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

.modal-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-coral));
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-bg-gray);
  border: none;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
  transition: all 0.3s ease;
  z-index: 2;
}

.modal-close:hover {
  background: var(--color-accent);
  color: #fff;
  transform: rotate(90deg);
}

.modal-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 6px;
}

.modal-card > p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 24px;
}

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

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

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  font-size: 15px;
  background: var(--color-bg);
  transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(255,107,53,0.15);
  background: #fff;
}

.form-group textarea {
  height: 90px;
  resize: vertical;
}

.form-submit {
  width: 100%;
  padding: 14px;
  background: var(--color-accent);
  color: #fff;
  font-weight: 700;
  font-size: 16px;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.3s ease;
  margin-top: 8px;
}

.form-submit:hover {
  background: var(--color-accent-dark);
  box-shadow: 0 6px 18px rgba(255,107,53,0.3);
}

.form-submit:active {
  transform: scale(0.98);
}

.form-privacy {
  margin-top: 16px;
  padding: 12px 14px;
  background: var(--color-bg-gray);
  border-radius: 10px;
  font-size: 12px;
  color: var(--color-text-light);
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.6;
}

.form-privacy svg {
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--color-mint);
}

body.modal-open {
  overflow: hidden;
}

/* ========== 页脚 ========== */
.site-footer {
  background: #23272A;
  color: #ABB2B7;
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 40px;
  margin-bottom: 40px;
}

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

.footer-desc {
  font-size: 14px;
  color: #8B9298;
  margin: 14px 0 18px;
  max-width: 300px;
  line-height: 1.7;
}

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

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #2F3437;
  color: #ABB2B7;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.footer-social a:hover {
  background: var(--color-accent);
  color: #fff;
  transform: translateY(-2px);
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

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

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

.footer-col a {
  font-size: 14px;
  color: #8B9298;
  transition: color 0.25s ease;
  position: relative;
}

.footer-col a:hover {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.footer-contact p {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: #8B9298;
  margin-bottom: 10px;
}

.footer-contact svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid #33383B;
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: #6E767C;
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .mode-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .scene-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 28px 16px;
  }
  .process-steps::before {
    display: none;
  }
  .hero-wrap {
    flex-direction: column-reverse;
    gap: 32px;
  }
  .hero-content,
  .hero-visual {
    flex: 1 1 100%;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .nav-links {
    gap: 4px;
  }
  .nav-link {
    padding: 8px 12px;
    font-size: 14px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: var(--spacing-section-mobile) 0;
  }
  .mode-grid,
  .scene-grid {
    grid-template-columns: 1fr;
  }
  .process-steps {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .nav-links {
    display: none;
  }
  .nav-cta {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .main-nav {
    padding: 10px 16px;
  }
  .cta-banner {
    padding: 36px 28px;
    flex-direction: column;
    text-align: center;
  }
  .cta-banner h2 {
    font-size: 22px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .hero-card img {
    height: 200px;
  }
  .process-wrap {
    padding: 24px;
  }
  .stats-panel {
    padding: 28px 20px;
  }
  .faq-item summary {
    padding: 16px;
    font-size: 15px;
  }
  .faq-answer {
    padding: 14px 16px;
  }
  .modal-card {
    padding: 28px 20px;
  }
}

@media (max-width: 520px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .hero-btns .btn {
    width: 100%;
  }
  .stats-quote {
    font-size: 13px;
  }
}

/* ========== 动画 ========== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeInUp 0.7s ease both;
}

.fade-in-delay-1 {
  animation-delay: 0.1s;
}

.fade-in-delay-2 {
  animation-delay: 0.2s;
}

.fade-in-delay-3 {
  animation-delay: 0.3s;
}

/* 焦点可访问性 */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(255,107,53,0.5);
  outline-offset: 2px;
}

/* roulang page: category2 */
:root {
  --color-primary: #FF6B35;
  --color-primary-dark: #E55A2B;
  --color-primary-light: #FFF0EA;
  --color-accent: #2EC4B6;
  --color-accent-light: #E7F8F5;
  --color-dark: #2F3437;
  --color-darker: #23272A;
  --color-bg: #FAF8F5;
  --color-bg-alt: #F2F0ED;
  --color-white: #FFFFFF;
  --color-border: #EFEDEA;
  --color-text: #2F3437;
  --color-text-muted: #6B7280;
  --radius-xl: 24px;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-pill: 999px;
  --shadow-sm: 0 4px 20px rgba(47,52,55,0.08);
  --shadow-md: 0 12px 32px rgba(47,52,55,0.14);
  --space-section: 96px;
  --container: 1200px;
  --transition: all .3s cubic-bezier(.25,.8,.25,1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-weight: 400;
  line-height: 1.8;
  color: var(--color-text);
  background: var(--color-bg);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, textarea { font-family: inherit; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: var(--space-section) 0; }
.section-alt { background: var(--color-bg-alt); }
.section-title {
  font-size: clamp(26px,4vw,38px);
  font-weight: 700;
  line-height: 1.3;
  text-align: center;
  margin-bottom: 12px;
}
.section-sub {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 16px;
  max-width: 640px;
  margin: 0 auto 48px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 12px 0;
  background: rgba(250,248,245,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(239,237,234,.7);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: var(--color-white);
  border-radius: 18px;
  padding: 10px 20px;
  box-shadow: var(--shadow-sm);
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg,#FF6B35,#FF4D6D);
  color: #fff;
  font-size: 14px;
  font-weight: 800;
  border-radius: 10px;
  letter-spacing: -.5px;
}
.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  font-weight: 700;
  font-size: 16px;
  color: var(--color-text);
}
.logo-text small { font-size: 10px; font-weight: 400; color: var(--color-text-muted); letter-spacing: .5px; }

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  justify-content: center;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  background: transparent;
  transition: var(--transition);
}
.nav-link:hover { background: var(--color-bg-alt); color: var(--color-primary); }
.nav-link.active {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 600;
}
.nav-link svg { width: 15px; height: 15px; opacity: .7; }

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 24px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-primary);
  color: #fff !important;
  box-shadow: 0 4px 14px rgba(255,107,53,.25);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255,107,53,.35);
}
.btn-primary:active { transform: scale(.97); }
.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-dark);
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
}
.btn-ghost:hover { border-color: var(--color-primary); color: var(--color-primary); }

.menu-toggle {
  display: none;
  background: none;
  border: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: 8px;
}
.menu-toggle span { width: 22px; height: 2px; background: var(--color-text); border-radius: 2px; transition: var(--transition); }

/* Mobile Nav */
.mobile-nav {
  display: none;
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  background: var(--color-white);
  box-shadow: var(--shadow-md);
  border-radius: 0 0 18px 18px;
  padding: 24px;
  z-index: 999;
  flex-direction: column;
  gap: 12px;
  transition: var(--transition);
}
.mobile-nav.open { display: flex; }
.mobile-nav .nav-link { padding: 14px 20px; background: var(--color-bg); }

/* Hero */
.hero-solution {
  padding: 80px 0 0;
  background: var(--color-bg);
  position: relative;
  overflow: hidden;
}
.hero-solution::before {
  content: "";
  position: absolute;
  right: -160px;
  top: -140px;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle,rgba(255,107,53,.12) 0%,rgba(255,107,53,0) 70%);
  pointer-events: none;
  border-radius: 50%;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 56px;
  align-items: center;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 20px;
}
.hero-tag::before { content: "◆"; font-size: 8px; }
.hero-solution h1 {
  font-size: clamp(32px,5vw,48px);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 18px;
  color: var(--color-text);
}
.hero-solution h1 em {
  font-style: normal;
  color: var(--color-primary);
}
.hero-solution .hero-desc {
  font-size: 16px;
  color: var(--color-text-muted);
  max-width: 520px;
  line-height: 1.8;
  margin-bottom: 28px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-image {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  background: var(--color-white);
}
.hero-image img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  transition: transform .5s ease, filter .4s ease;
  filter: saturate(.85);
}
.hero-image:hover img { transform: scale(1.02); filter: saturate(1); }
.hero-image-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-accent);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 12px rgba(46,196,182,.35);
}
.hero-image-badge::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #fff;
  animation: pulse 2s infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .5; } }
.hero-image-info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(35,39,42,.85);
  color: #fff;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  backdrop-filter: blur(4px);
}
.hero-image-info strong { color: var(--color-accent); font-size: 16px; }

/* Filter Bar */
.filter-bar-wrap { padding-top: 56px; }
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 40px;
}
.filter-btn {
  padding: 8px 22px;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--color-border);
  background: var(--color-white);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: var(--transition);
}
.filter-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
.filter-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(255,107,53,.25);
}

/* Solution Cards */
.solution-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 24px;
}
.solution-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.solution-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(255,107,53,.3);
}
.solution-card-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--color-bg-alt);
}
.solution-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease, filter .4s ease;
  filter: saturate(.85);
}
.solution-card:hover .solution-card-img img { transform: scale(1.03); filter: saturate(1); }
.solution-card-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(255,255,255,.92);
  color: var(--color-text);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  box-shadow: 0 2px 8px rgba(0,0,0,.08);
  backdrop-filter: blur(4px);
}
.solution-card-body {
  padding: 24px 24px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.solution-card-body h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.4;
}
.solution-card-body p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: 18px;
  flex: 1;
}
.solution-card-metrics {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.metric-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
}
.metric-badge.green { background: var(--color-accent-light); color: var(--color-accent); }
.metric-badge.grey { background: #F0F1F3; color: var(--color-text); }
.solution-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  transition: var(--transition);
}
.solution-card-link svg { width: 15px; height: 15px; transition: transform .3s; }
.solution-card-link:hover { color: var(--color-primary); }
.solution-card-link:hover svg { transform: translateX(4px); }

/* Coverage */
.coverage-section { background: var(--color-white); }
.coverage-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 20px;
}
.coverage-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/5;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: var(--transition);
  cursor: pointer;
}
.coverage-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.coverage-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.coverage-card:hover img { transform: scale(1.05); }
.coverage-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,rgba(35,39,42,0) 40%,rgba(35,39,42,.65) 100%);
}
.coverage-card-info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 18px 20px;
  z-index: 2;
  color: #fff;
}
.coverage-card-info h3 { font-size: 17px; font-weight: 700; margin-bottom: 4px; }
.coverage-card-info p { font-size: 13px; opacity: .85; }

/* Process */
.process-section { background: var(--color-bg); }
.process-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 24px;
  margin-top: 48px;
}
.process-item {
  position: relative;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 32px 24px 28px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  text-align: center;
}
.process-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.process-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg,#FF6B35,#FF4D6D);
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 16px;
}
.process-item h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.process-item p { font-size: 14px; color: var(--color-text-muted); line-height: 1.7; }

/* Stats */
.stats-section {
  background: var(--color-dark);
  border-radius: var(--radius-xl);
  margin: var(--space-section) 24px;
  padding: 64px 48px;
  position: relative;
  overflow: hidden;
}
.stats-section::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle,rgba(255,107,53,.2) 0%,rgba(255,107,53,0) 70%);
  pointer-events: none;
}
.stats-tag {
  display: inline-flex;
  align-items: center;
  background: rgba(255,107,53,.18);
  color: #FF8C5A;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 28px;
  letter-spacing: 1px;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 32px;
  text-align: center;
}
.stat-item { padding: 16px; }
.stat-value {
  font-size: 42px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 6px;
}
.stat-value em { font-style: normal; color: var(--color-primary); }
.stat-label { font-size: 14px; color: rgba(255,255,255,.6); }
.stats-quote {
  margin-top: 40px;
  text-align: center;
  color: rgba(255,255,255,.8);
  font-size: 15px;
  border-top: 1px solid rgba(255,255,255,.08);
  padding-top: 28px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  font-style: italic;
}

/* FAQ */
.faq-section { background: var(--color-white); }
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  padding: 0 24px;
  margin-bottom: 12px;
  transition: var(--transition);
  overflow: hidden;
}
.faq-item.open { box-shadow: var(--shadow-sm); border-color: rgba(255,107,53,.3); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  cursor: pointer;
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}
.faq-question .faq-icon { transition: transform .3s; color: var(--color-primary); flex-shrink: 0; }
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .35s ease;
  padding: 0;
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.8;
}
.faq-item.open .faq-answer {
  max-height: 260px;
  padding: 0 0 20px;
  border-top: 1px solid var(--color-border);
  padding-top: 14px;
  margin-top: 2px;
}

/* CTA */
.cta-banner {
  background: var(--color-darker);
  border-radius: var(--radius-xl);
  margin: var(--space-section) 24px;
  padding: 64px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -100px;
  transform: translateX(-50%);
  width: 400px;
  height: 200px;
  background: radial-gradient(ellipse,rgba(255,107,53,.18) 0%,rgba(255,107,53,0) 70%);
  pointer-events: none;
}
.cta-banner h2 {
  font-size: clamp(24px,3.5vw,32px);
  color: #fff;
  font-weight: 700;
  margin-bottom: 10px;
}
.cta-banner p { color: rgba(255,255,255,.65); font-size: 15px; margin-bottom: 28px; }
.cta-banner .btn { font-size: 16px; padding: 14px 36px; }

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.6);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  backdrop-filter: blur(4px);
}
.modal-overlay.open { display: flex; }
.modal-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 520px;
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(0,0,0,.25);
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
}
.modal-card::before {
  content: "";
  display: block;
  height: 6px;
  background: linear-gradient(90deg,#FF6B35,#FF4D6D);
}
.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-bg-alt);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: var(--transition);
  z-index: 10;
}
.modal-close:hover { background: var(--color-primary); color: #fff; transform: rotate(90deg); }
.modal-body { padding: 40px 32px 32px; }
.modal-body h3 { font-size: 22px; font-weight: 700; margin-bottom: 8px; }
.modal-body > p { font-size: 14px; color: var(--color-text-muted); margin-bottom: 24px; }
.form-group { margin-bottom: 16px; }
.form-group label { font-size: 13px; font-weight: 600; color: var(--color-text); display: block; margin-bottom: 6px; }
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--color-border);
  border-radius: 10px;
  font-size: 14px;
  color: var(--color-text);
  background: var(--color-bg);
  transition: var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(255,107,53,.12);
  background: #fff;
}
.form-group textarea { resize: vertical; min-height: 80px; }
.form-submit { width: 100%; margin-top: 8px; }
.privacy-note {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--color-text-muted);
  background: #FAFAFA;
  border-radius: 8px;
  padding: 10px 14px;
  margin-top: 14px;
  line-height: 1.6;
}
.privacy-note svg { flex-shrink: 0; color: var(--color-accent); width: 16px; height: 16px; }

/* Footer */
.site-footer {
  background: var(--color-darker);
  color: rgba(255,255,255,.7);
  padding: 64px 0 0;
  margin-top: var(--space-section);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.site-footer .logo { margin-bottom: 16px; }
.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,.55);
  max-width: 320px;
  margin-bottom: 20px;
}
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(255,255,255,.06);
  color: rgba(255,255,255,.7);
  transition: var(--transition);
}
.footer-social a:hover { background: var(--color-primary); color: #fff; transform: translateY(-2px); }
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 18px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
  font-size: 14px;
  color: rgba(255,255,255,.55);
  transition: var(--transition);
}
.footer-col ul a:hover { color: var(--color-primary); }
.footer-contact p {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255,255,255,.55);
  margin-bottom: 12px;
}
.footer-contact svg { width: 16px; height: 16px; color: var(--color-primary); flex-shrink: 0; }
.footer-bottom {
  padding: 20px 0 28px;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,.35);
}

/* Reveal animation */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* Focus accessibility */
a:focus-visible, button:focus-visible {
  outline: 3px solid rgba(255,107,53,.4);
  outline-offset: 2px;
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--color-bg-alt); }
::-webkit-scrollbar-thumb { background: #BFBFBF; border-radius: var(--radius-pill); }
::-webkit-scrollbar-thumb:hover { background: var(--color-primary); }

/* Responsive */
@media (max-width: 1024px) {
  .hero-inner { gap: 36px; }
  .coverage-grid { grid-template-columns: repeat(2,1fr); }
  .process-grid { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --space-section: 64px; }
  .main-nav, .header-actions .btn-ghost { display: none; }
  .menu-toggle { display: flex; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-solution { padding-top: 48px; }
  .hero-image { order: -1; }
  .hero-image img { height: 240px; }
  .solution-grid { grid-template-columns: 1fr; }
  .stats-section { margin: var(--space-section) 16px; padding: 40px 24px; }
  .stats-grid { grid-template-columns: repeat(2,1fr); gap: 24px; }
  .cta-banner { margin: var(--space-section) 16px; padding: 48px 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .coverage-grid { grid-template-columns: repeat(2,1fr); gap: 12px; }
  .process-grid { grid-template-columns: 1fr; gap: 16px; }
  .header-inner { padding: 8px 14px; }
  .logo-text { font-size: 14px; }
  .modal-body { padding: 32px 20px 24px; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero-solution h1 { font-size: 28px; }
  .section-title { font-size: 24px; }
  .coverage-grid { grid-template-columns: 1fr 1fr; }
  .coverage-card { aspect-ratio: 3/4; }
  .coverage-card-info { padding: 12px 14px; }
  .coverage-card-info h3 { font-size: 14px; }
  .coverage-card-info p { font-size: 11px; line-height: 1.4; }
  .stat-value { font-size: 32px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .filter-btn { padding: 6px 16px; font-size: 13px; }
  .btn { padding: 10px 18px; font-size: 14px; }
  .header-actions .btn-primary { padding: 8px 14px; font-size: 13px; }
  .footer-bottom { font-size: 12px; }
}

/* roulang page: article */
:root {
  --color-bg: #FAF8F5;
  --color-surface: #FFFFFF;
  --color-surface-muted: #F2F0ED;
  --color-primary: #2F3437;
  --color-primary-dark: #2A2E31;
  --color-accent: #FF6B35;
  --color-accent-hover: #E55A2B;
  --color-accent-light: #FFF0EA;
  --color-mint: #2EC4B6;
  --color-mint-light: #E7F8F5;
  --color-text: #2F3437;
  --color-text-secondary: #5C6368;
  --color-text-muted: #8A9095;
  --color-border: #EFEDEA;
  --color-footer-bg: #23272A;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --radius-xs: 10px;
  --shadow-sm: 0 4px 20px rgba(47,52,55,0.08);
  --shadow-md: 0 12px 32px rgba(47,52,55,0.14);
  --font-sans: "PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono: "SF Mono",Consolas,"Liberation Mono",monospace;
  --transition: all 0.25s ease;
}

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

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

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

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

button {
  cursor: pointer;
  border: none;
  background: none;
}

::selection {
  background: rgba(255,107,53,0.2);
  color: var(--color-primary);
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: #F2F0ED;
}

::-webkit-scrollbar-thumb {
  background: #BFBFBF;
  border-radius: 999px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent);
}

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

.container-narrow {
  max-width: 800px;
}

/* ============ Reading Progress ============ */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, #FF6B35, #FF4D6D);
  z-index: 9999;
  transition: width 0.12s ease-out;
  border-radius: 0 2px 2px 0;
}

/* ============ Header & Navigation ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 800;
  padding: 12px 0 8px;
  background: rgba(250,248,245,0.9);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--color-surface);
  border-radius: 18px;
  padding: 10px 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(239,237,234,0.9);
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  text-decoration: none;
  transition: opacity 0.2s;
}

.logo:hover {
  opacity: 0.85;
}

.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, #FF6B35, #FF4D6D);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.5px;
}

.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.3px;
  line-height: 1.2;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: var(--transition);
  white-space: nowrap;
}

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

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

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

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--color-surface-muted);
  align-items: center;
  transition: var(--transition);
}

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

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-primary);
  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);
}

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
  font-family: var(--font-sans);
  line-height: 1.2;
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 3px solid rgba(255,107,53,0.35);
  outline-offset: 2px;
}

.btn-primary {
  background: linear-gradient(135deg, #FF6B35, #FF4D6D);
  color: #fff;
  box-shadow: 0 4px 14px rgba(255,107,53,0.25);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #E55A2B, #E63D55);
  box-shadow: 0 8px 20px rgba(255,107,53,0.3);
  transform: translateY(-2px);
  color: #fff;
}

.btn-primary:active {
  transform: scale(0.97);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(255,107,53,0.04);
}

.btn-outline:active {
  transform: scale(0.97);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 17px;
}

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

.btn-block {
  width: 100%;
}

/* ============ Breadcrumb ============ */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-muted);
}

.breadcrumb a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

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

.breadcrumb-sep {
  color: #C8C4C0;
  font-size: 12px;
}

.breadcrumb-current {
  color: var(--color-accent);
  display: inline-block;
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ============ Article Hero ============ */
.article-hero {
  position: relative;
  background:
    linear-gradient(rgba(250,248,245,0.94), rgba(250,248,245,0.97)),
    url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  padding: 56px 0 72px;
  border-bottom: 1px solid var(--color-border);
}

.article-title-block {
  max-width: 780px;
  margin-top: 40px;
}

.category-badge {
  display: inline-block;
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 18px;
  letter-spacing: 0.3px;
}

.article-title-block h1 {
  font-size: clamp(28px, 4.5vw, 38px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-primary);
  letter-spacing: -0.5px;
  margin: 0 0 22px;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 14px;
  color: var(--color-text-muted);
}

.meta-dot {
  color: #C8C4C0;
  font-style: normal;
}

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

.meta-item svg {
  width: 14px;
  height: 14px;
  color: var(--color-text-muted);
}

/* ============ Article Body ============ */
.article-body-section {
  padding: 48px 0 24px;
}

.article-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  padding: 48px 52px;
  margin-bottom: 32px;
}

.article-content {
  font-size: 17px;
  color: #3A4145;
  line-height: 1.85;
  word-break: break-word;
}

.article-content > *:last-child {
  margin-bottom: 0;
}

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

.article-content h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--color-primary);
  margin: 2em 0 1em;
  padding-bottom: 0.45em;
  border-bottom: 1px solid var(--color-border);
  line-height: 1.4;
  letter-spacing: -0.3px;
}

.article-content h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  margin: 1.8em 0 0.8em;
  line-height: 1.4;
}

.article-content h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  margin: 1.6em 0 0.7em;
}

.article-content img {
  border-radius: 12px;
  max-width: 100%;
  height: auto;
  margin: 2em auto;
  display: block;
}

.article-content img + em,
.article-content img + span.img-caption {
  display: block;
  text-align: center;
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: -1em;
  margin-bottom: 2em;
  font-style: normal;
}

.article-content blockquote {
  border-left: 4px solid var(--color-accent);
  background: #FFF7F2;
  padding: 18px 24px;
  border-radius: 0 12px 12px 0;
  margin: 2em 0;
  color: var(--color-text-secondary);
  font-size: 15px;
}

.article-content blockquote p {
  margin: 0;
}

.article-content pre {
  background: #F6F5F3;
  border-radius: 12px;
  padding: 20px 24px;
  overflow-x: auto;
  margin: 2em 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.7;
  border: 1px solid var(--color-border);
}

.article-content pre code {
  background: none;
  padding: 0;
  font-size: inherit;
  color: inherit;
}

.article-content code {
  background: #F6F5F3;
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 0.9em;
  font-family: var(--font-mono);
}

.article-content ul,
.article-content ol {
  margin: 0 0 1.5em;
  padding-left: 26px;
}

.article-content li {
  margin-bottom: 0.5em;
}

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

.article-content a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: opacity 0.2s;
}

.article-content a:hover {
  opacity: 0.7;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 2em 0;
  font-size: 15px;
  border: 1px solid var(--color-border);
}

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

.article-content th {
  background: var(--color-surface-muted);
  font-weight: 700;
  color: var(--color-primary);
}

.article-content hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2.5em 0;
}

.article-content strong {
  font-weight: 700;
  color: var(--color-primary);
}

/* ============ Tags ============ */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
}

.tag {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--color-surface-muted);
  color: var(--color-text-secondary);
  font-size: 12px;
  font-weight: 500;
  transition: var(--transition);
  text-decoration: none;
}

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

/* ============ Article Pagination ============ */
.article-pagination {
  display: flex;
  gap: 16px;
  margin: 8px 0 24px;
}

.page-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: var(--transition);
  flex: 1;
}

.page-link:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.page-link:active {
  transform: scale(0.98);
}

.page-next {
  justify-content: flex-end;
  text-align: right;
}

.page-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--color-accent-light);
  color: var(--color-accent);
  flex-shrink: 0;
}

.page-next .page-icon {
  background: var(--color-mint-light);
  color: var(--color-mint);
}

.page-icon svg {
  width: 16px;
  height: 16px;
}

.page-label {
  display: block;
  font-size: 12px;
  color: var(--color-text-muted);
  margin-bottom: 2px;
}

.page-title {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
}

/* ============ Related Reading ============ */
.related-section {
  padding: 64px 0 40px;
  background: var(--color-bg);
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 32px;
}

.section-header h2 {
  font-size: clamp(24px, 3vw, 30px);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.3px;
  margin: 0;
}

.section-more {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s;
  white-space: nowrap;
}

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

.section-more svg {
  width: 14px;
  height: 14px;
  transition: transform 0.2s;
}

.section-more:hover svg {
  transform: translateX(4px);
}

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

.related-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  text-decoration: none;
  transition: var(--transition);
}

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

.related-card-thumb {
  height: 170px;
  overflow: hidden;
  position: relative;
  background: var(--color-surface-muted);
}

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

.related-card:hover .related-card-thumb img {
  transform: scale(1.04);
}

.related-card-body {
  padding: 20px 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.card-tag {
  display: inline-block;
  width: fit-content;
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-size: 11px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
}

.related-card-body h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.2s;
}

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

.card-date {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: auto;
}

.related-empty {
  grid-column: 1 / -1;
  background: var(--color-surface);
  border: 1px dashed #D5D2CE;
  border-radius: var(--radius-md);
  padding: 40px;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 14px;
}

/* ============ CTA Section ============ */
.cta-section {
  padding: 64px 0 80px;
}

.cta-card {
  background: var(--color-primary);
  border-radius: var(--radius-lg);
  padding: 48px 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(47,52,55,0.25);
}

.cta-card::before {
  content: '';
  position: absolute;
  right: -60px;
  top: -80px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,107,53,0.22), transparent 70%);
}

.cta-card::after {
  content: '';
  position: absolute;
  left: 40%;
  bottom: -100px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(46,196,182,0.1), transparent 70%);
}

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

.cta-content h2 {
  color: #fff;
  font-size: 26px;
  font-weight: 700;
  margin: 0 0 10px;
  letter-spacing: -0.3px;
}

.cta-content p {
  color: rgba(255,255,255,0.7);
  font-size: 15px;
  margin: 0;
}

.cta-card .btn {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}

/* ============ Not Found / Empty State ============ */
.not-found-section {
  padding: 80px 0 96px;
}

.not-found-card {
  max-width: 560px;
  margin: 0 auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 56px 40px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.not-found-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  border-radius: 20px;
  background: var(--color-surface-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
}

.not-found-icon svg {
  width: 32px;
  height: 32px;
}

.not-found-card h1 {
  font-size: 28px;
  font-weight: 700;
  margin: 0 0 12px;
  color: var(--color-primary);
}

.not-found-card p {
  color: var(--color-text-muted);
  font-size: 15px;
  margin-bottom: 28px;
}

/* ============ Footer ============ */
.site-footer {
  background: var(--color-footer-bg);
  color: rgba(255,255,255,0.6);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 0.8fr 0.8fr 1.1fr;
  gap: 48px;
  padding: 64px 0 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

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

.footer-brand .logo .logo-mark {
  background: linear-gradient(135deg, #FF6B35, #FF4D6D);
}

.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  margin: 18px 0 24px;
  color: rgba(255,255,255,0.5);
  max-width: 320px;
}

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

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(255,255,255,0.07);
  color: rgba(255,255,255,0.65);
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--color-accent);
  color: #fff;
  transform: translateY(-2px);
}

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

.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin: 0 0 18px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

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

.footer-col ul a {
  color: rgba(255,255,255,0.5);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s;
}

.footer-col ul a:hover {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.footer-contact p {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  margin: 0 0 12px;
  color: rgba(255,255,255,0.5);
  line-height: 1.6;
}

.footer-contact svg {
  width: 16px;
  height: 16px;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 3px;
}

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

/* ============ Modal ============ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

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

.modal-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  width: 520px;
  max-width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  padding: 40px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.25);
  animation: modalIn 0.3s ease;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-accent {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: linear-gradient(135deg, #FF6B35, #FF4D6D);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-surface-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  font-size: 18px;
  transition: var(--transition);
  line-height: 1;
}

.modal-close:hover {
  background: var(--color-accent-light);
  color: var(--color-accent);
  transform: rotate(90deg);
}

.modal-body h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0 0 10px;
  letter-spacing: -0.3px;
}

.modal-body > p {
  font-size: 14px;
  color: var(--color-text-muted);
  margin: 0 0 28px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-xs);
  background: #FCFBF9;
  font-size: 14px;
  color: var(--color-text);
  transition: var(--transition);
  outline: none;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #B0AFAE;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(255,107,53,0.15);
}

.form-group input.error,
.form-group textarea.error {
  border-color: #E5484D;
}

.privacy-note {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--color-text-muted);
  margin: 4px 0 0;
  line-height: 1.6;
}

.privacy-note svg {
  width: 14px;
  height: 14px;
  color: var(--color-mint);
  flex-shrink: 0;
}

.form-success {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 0;
  gap: 16px;
}

.form-success-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-mint-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-mint);
}

.form-success-icon svg {
  width: 28px;
  height: 28px;
}

.form-success p {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
  margin: 0;
}

/* ============ Responsive ============ */
@media (max-width: 1023px) {
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .related-card:last-child {
    grid-column: 1 / -1;
    max-width: calc(50% - 12px);
  }

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

  .article-card {
    padding: 40px 36px;
  }
}

@media (max-width: 767px) {
  .container {
    padding: 0 16px;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    align-items: stretch;
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: 12px;
    gap: 4px;
    border: 1px solid var(--color-border);
    z-index: 100;
  }

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

  .nav-toggle {
    display: flex;
  }

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

  .article-hero {
    padding: 32px 0 40px;
  }

  .article-title-block {
    margin-top: 24px;
  }

  .article-title-block h1 {
    font-size: 26px;
  }

  .article-body-section {
    padding: 24px 0 16px;
  }

  .article-card {
    padding: 28px 20px;
    border-radius: var(--radius-md);
  }

  .article-content {
    font-size: 16px;
  }

  .article-content h2 {
    font-size: 22px;
  }

  .article-content h3 {
    font-size: 19px;
  }

  .article-pagination {
    flex-direction: column;
  }

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

  .related-card:last-child {
    grid-column: auto;
    max-width: none;
  }

  .related-card-thumb {
    height: 190px;
  }

  .breadcrumb {
    font-size: 13px;
  }

  .breadcrumb a:nth-of-type(2) {
    max-width: 100px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .breadcrumb-current {
    max-width: 140px;
  }

  .cta-section {
    padding: 48px 0 56px;
  }

  .cta-card {
    flex-direction: column;
    text-align: center;
    padding: 40px 24px;
    gap: 24px;
  }

  .cta-content h2 {
    font-size: 22px;
  }

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

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 48px 0 36px;
  }

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

  .modal-card {
    padding: 32px 24px;
    max-height: 92vh;
  }

  .modal-body h3 {
    font-size: 20px;
  }

  .not-found-card {
    padding: 40px 24px;
  }

  .section-header {
    margin-bottom: 24px;
  }

  .article-tags {
    margin-top: 28px;
    padding-top: 20px;
  }
}

@media (max-width: 480px) {
  .logo-text {
    font-size: 16px;
  }

  .logo-mark {
    width: 32px;
    height: 32px;
    font-size: 12px;
  }

  .article-card {
    padding: 24px 16px;
  }

  .article-content {
    font-size: 15px;
    line-height: 1.8;
  }

  .related-grid {
    gap: 16px;
  }

  .footer-grid {
    gap: 28px;
  }
}