/* roulang page: index */
/* ========== 设计变量 ========== */
:root {
  --primary: #155dfc;
  --primary-dark: #0b3dd0;
  --primary-soft: #e8f0ff;
  --accent: #ff7a1a;
  --accent-dark: #e86400;
  --accent-soft: #fff3e8;
  --bg: #f4f7fc;
  --surface: #ffffff;
  --text: #141e33;
  --text-weak: #64718c;
  --border: #dfe7f3;
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 4px 12px rgba(20, 30, 51, 0.06);
  --shadow: 0 10px 30px rgba(20, 30, 51, 0.08);
  --shadow-lg: 0 24px 56px rgba(20, 30, 51, 0.16);
  --transition: all 0.25s ease;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

/* ========== 基础重置 ========== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--primary); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font-family: inherit; }

/* ========== 通用容器 ========== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  border: 1px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  box-shadow: 0 8px 22px rgba(255, 122, 26, 0.32);
}
.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(255, 122, 26, 0.4);
  color: #fff;
}
.btn-outline {
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.24);
  color: #fff;
}

/* ========== 导航头部 ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: 0.3px;
  white-space: nowrap;
}
.logo:hover { color: var(--text); }
.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), #6db3ff);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 900;
  font-size: 18px;
  box-shadow: 0 6px 16px rgba(21, 93, 252, 0.3);
  flex-shrink: 0;
}
.logo strong { color: var(--primary); }
.main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}
.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-list a {
  display: block;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  transition: var(--transition);
}
.nav-list a:hover { background: var(--primary-soft); color: var(--primary); }
.nav-list a.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 16px rgba(21, 93, 252, 0.28);
}
.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  box-shadow: 0 6px 18px rgba(255, 122, 26, 0.3);
  transition: var(--transition);
}
.header-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(255, 122, 26, 0.4);
  color: #fff;
}
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
}
.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  position: relative;
  transition: all 0.3s ease;
}
.menu-toggle span::before,
.menu-toggle span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.menu-toggle span::before { top: -7px; }
.menu-toggle span::after { top: 7px; }
.menu-toggle.active span { background: transparent; }
.menu-toggle.active span::before { top: 0; transform: rotate(45deg); }
.menu-toggle.active span::after { top: 0; transform: rotate(-45deg); }

/* ========== 首屏 Hero ========== */
.hero {
  position: relative;
  padding: 130px 0 110px;
  background: linear-gradient(135deg, #0c1c4d 0%, #123b7a 55%, #155dfc 100%);
  color: #fff;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  opacity: 0.36;
  z-index: 1;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(12, 28, 77, 0.86) 0%, rgba(18, 59, 122, 0.36) 100%);
  z-index: 2;
}
.hero::after {
  content: '';
  position: absolute;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 122, 26, 0.24), transparent 60%);
  right: -100px;
  top: -120px;
  z-index: 2;
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 3;
  max-width: 760px;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.3);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 26px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.hero-tag::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #57e59a;
  box-shadow: 0 0 12px rgba(87, 229, 154, 0.8);
  flex-shrink: 0;
}
.hero h1 {
  font-size: 52px;
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 22px;
}
.hero-sub {
  display: block;
  font-size: 30px;
  font-weight: 700;
  color: #ffd5a8;
  margin-top: 12px;
  letter-spacing: 0;
}
.hero-desc {
  font-size: 18px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 38px;
  max-width: 640px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 56px;
}
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 44px;
}
.hero-stat .num {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}
.hero-stat .label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  margin-top: 4px;
}

/* ========== 通用板块 ========== */
.section { padding: 100px 0; }
.section-alt { background: var(--surface); }
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 58px;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 16px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.section-tag i { font-size: 13px; }
.section-head h2 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
  color: var(--text);
}
.section-head p {
  font-size: 16px;
  color: var(--text-weak);
}

/* ========== 登录流程 ========== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.step-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 38px 32px;
  position: relative;
  transition: var(--transition);
}
.step-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.step-num {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #6db3ff);
  color: #fff;
  font-size: 19px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  box-shadow: 0 8px 20px rgba(21, 93, 252, 0.3);
}
.step-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}
.step-card p {
  color: var(--text-weak);
  font-size: 15px;
  line-height: 1.8;
}

/* ========== 分类入口 ========== */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.cat-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 310px;
  display: flex;
  align-items: flex-end;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.cat-card .cat-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  transition: transform 0.5s ease;
}
.cat-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(12, 28, 77, 0.08) 0%, rgba(12, 28, 77, 0.92) 92%);
  z-index: 1;
}
.cat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.cat-card:hover .cat-img { transform: scale(1.05); }
.cat-body {
  position: relative;
  z-index: 2;
  padding: 36px 32px;
  color: #fff;
  width: 100%;
}
.cat-body h3 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 8px;
}
.cat-body p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 16px;
  max-width: 400px;
}
.cat-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 14px;
  color: #ffd5a8;
  transition: gap 0.2s ease, color 0.2s ease;
}
.cat-link:hover { gap: 12px; color: #fff; }

/* ========== 平台特色 ========== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), #6db3ff);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.feature-card:hover::before { opacity: 1; }
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
}
.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.8;
}

/* ========== 最新资讯列表 ========== */
.news-section { background: var(--surface); }
.news-section .news-card { background: var(--bg); }
.news-section .empty-tip { background: var(--bg); }
.news-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 1000px;
  margin: 0 auto;
}
.news-card {
  display: flex;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.news-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px);
  border-color: transparent;
}
.news-thumb {
  display: block;
  position: relative;
  width: 220px;
  min-height: 190px;
  flex-shrink: 0;
  overflow: hidden;
}
.news-thumb img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.news-card:hover .news-thumb img { transform: scale(1.06); }
.news-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(21, 93, 252, 0.92);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  z-index: 2;
}
.news-body {
  flex: 1;
  padding: 26px 30px;
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.news-body h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 10px;
}
.news-body h3 a { transition: var(--transition); }
.news-body h3 a:hover { color: var(--primary); }
.news-body p {
  font-size: 14px;
  color: var(--text-weak);
  flex: 1;
  line-height: 1.8;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
  gap: 12px;
  flex-wrap: wrap;
}
.news-foot time {
  font-size: 13px;
  color: var(--text-weak);
}
.news-foot time i { margin-right: 4px; }
.news-more {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}
.news-more:hover { color: var(--primary-dark); }
.empty-tip {
  text-align: center;
  padding: 56px 30px;
  color: var(--text-weak);
  background: var(--bg);
  border-radius: var(--radius);
  font-size: 15px;
}

/* ========== 数据统计 ========== */
.stats-section {
  position: relative;
  padding: 90px 0;
  background: linear-gradient(135deg, #0c1c4d, #123b7a);
  color: #fff;
  overflow: hidden;
}
.stats-bg {
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
  opacity: 0.32;
  z-index: 1;
}
.stats-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(12, 28, 77, 0.5), rgba(18, 59, 122, 0.28));
  z-index: 2;
}
.stats-container {
  position: relative;
  z-index: 3;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}
.stat-item .stat-num {
  font-size: 46px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}
.stat-item .stat-label {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.82);
  margin-top: 6px;
}

/* ========== 用户反馈 ========== */
.feedback-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feedback-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: var(--transition);
}
.feedback-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}
.feedback-stars {
  color: #ffb400;
  font-size: 15px;
  letter-spacing: 2px;
  margin-bottom: 14px;
}
.feedback-card p {
  font-size: 14px;
  color: var(--text-weak);
  margin-bottom: 22px;
  line-height: 1.8;
}
.feedback-user {
  display: flex;
  align-items: center;
  gap: 12px;
}
.feedback-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #6db3ff);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
  flex-shrink: 0;
}
.feedback-user .name {
  font-size: 15px;
  font-weight: 600;
}
.feedback-user .role {
  font-size: 13px;
  color: var(--text-weak);
}

/* ========== FAQ ========== */
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}
.faq-item summary {
  padding: 20px 26px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  user-select: none;
  transition: color 0.2s ease;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--primary); }
.faq-item summary::after {
  content: '+';
  font-size: 24px;
  font-weight: 400;
  color: var(--primary);
  flex-shrink: 0;
  transition: transform 0.25s ease;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-answer {
  padding: 0 26px 22px;
  color: var(--text-weak);
  font-size: 15px;
  line-height: 1.8;
}

/* ========== CTA ========== */
.cta-section {
  position: relative;
  padding: 100px 0;
  background: linear-gradient(135deg, rgba(21, 93, 252, 0.92), rgba(11, 61, 208, 0.94));
  color: #fff;
  text-align: center;
  overflow: hidden;
}
.cta-bg {
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-3.png') center / cover no-repeat;
  opacity: 0.3;
  z-index: 1;
}
.cta-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(21, 93, 252, 0.88), rgba(11, 61, 208, 0.92));
  z-index: 2;
}
.cta-container {
  position: relative;
  z-index: 3;
}
.cta-section h2 {
  font-size: 38px;
  font-weight: 800;
  margin-bottom: 16px;
}
.cta-section p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: 36px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.8;
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ========== 页脚 ========== */
.site-footer {
  background: #0b1531;
  color: rgba(255, 255, 255, 0.7);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 44px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-brand .logo {
  color: #fff;
  margin-bottom: 16px;
}
.footer-brand .logo strong { color: var(--accent); }
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
  max-width: 340px;
}
.footer-title {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
}
.footer-links li {
  margin-bottom: 10px;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
  display: inline-block;
}
.footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}
.footer-links i { color: var(--accent); width: 16px; text-align: center; font-size: 13px; }
.footer-bottom {
  padding: 22px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

/* ========== 返回顶部 ========== */
.back-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  z-index: 60;
  font-size: 16px;
  transition: var(--transition);
}
.back-top:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
  color: #fff;
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 44px; }
  .hero-sub { font-size: 26px; }
  .cat-grid { grid-template-columns: 1fr; }
  .cat-card { min-height: 260px; }
  .stats-grid { gap: 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}
@media (max-width: 768px) {
  .header-inner { height: 64px; }
  .menu-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: 64px;
    right: 0;
    width: 280px;
    flex-direction: column;
    align-items: stretch;
    background: var(--surface);
    border-left: 1px solid var(--border);
    box-shadow: -12px 0 32px rgba(20, 30, 51, 0.12);
    padding: 22px 18px;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    gap: 14px;
    height: calc(100vh - 64px);
    overflow-y: auto;
    z-index: 99;
  }
  .main-nav.open { transform: translateX(0); }
  .nav-list { flex-direction: column; gap: 4px; align-items: stretch; }
  .nav-list a { padding: 13px 16px; }
  .header-cta { width: 100%; justify-content: center; }
  .hero { padding: 84px 0 72px; }
  .hero h1 { font-size: 32px; }
  .hero-sub { font-size: 21px; }
  .hero-desc { font-size: 16px; margin-bottom: 30px; }
  .hero-actions { margin-bottom: 40px; }
  .hero-stats { gap: 24px; }
  .hero-stat .num { font-size: 26px; }
  .hero-stat .label { font-size: 13px; }
  .section { padding: 66px 0; }
  .section-head { margin-bottom: 40px; }
  .section-head h2 { font-size: 28px; }
  .steps-grid { grid-template-columns: 1fr; }
  .cat-card { min-height: 240px; }
  .news-thumb { width: 100%; min-height: 180px; height: 180px; }
  .news-card { flex-direction: column; }
  .news-body { padding: 22px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 26px; }
  .stat-item .stat-num { font-size: 36px; }
  .feedback-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .cta-section { padding: 72px 0; }
  .cta-section h2 { font-size: 28px; }
  .back-top { right: 16px; bottom: 16px; width: 40px; height: 40px; font-size: 14px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .features-grid { grid-template-columns: 1fr; }
  .cat-body { padding: 24px 20px; }
  .cat-body h3 { font-size: 20px; }
  .cat-body p { font-size: 13px; }
  .btn { padding: 12px 22px; font-size: 14px; }
  .hero-actions .btn { width: 100%; }
  .hero-stats { gap: 18px; }
  .hero-stat .num { font-size: 22px; }
  .cta-actions .btn { width: 100%; }
  .footer-links li { font-size: 13px; }
  .faq-item summary { font-size: 15px; padding: 18px 18px; }
  .faq-answer { padding: 0 18px 18px; font-size: 14px; }
  .feedback-card { padding: 26px 20px; }
  .news-body h3 { font-size: 16px; }
}

/* roulang page: category1 */
:root {
    --primary: #1e5eff;
    --primary-dark: #1647cc;
    --primary-light: #e8efff;
    --accent: #ff6a3d;
    --accent-dark: #e44d22;
    --bg: #f6f8fc;
    --bg-white: #ffffff;
    --bg-soft: #f0f4ff;
    --text: #1a2333;
    --text-light: #5c6b82;
    --text-lighter: #8a97ad;
    --border: #e3e9f2;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow-sm: 0 2px 10px rgba(26, 35, 51, 0.06);
    --shadow-md: 0 8px 30px rgba(26, 35, 51, 0.08);
    --shadow-lg: 0 16px 50px rgba(26, 35, 51, 0.12);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

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

  html {
    scroll-behavior: smooth;
  }

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

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

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

  ul,
  ol {
    list-style: none;
  }

  button,
  input {
    font: inherit;
    border: none;
    outline: none;
    background: none;
  }

  .container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
  }

  .position-fixed {
    position: fixed;
  }

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

  .site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 24px;
  }

  .logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--text);
  }

  .logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    border-radius: 12px;
    font-size: 20px;
    font-weight: 700;
    box-shadow: 0 4px 14px rgba(30, 94, 255, 0.3);
  }

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

  .main-nav {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
    justify-content: flex-end;
  }

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

  .nav-list a {
    display: inline-block;
    padding: 8px 18px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-light);
    transition: var(--transition);
  }

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

  .nav-list a.active {
    color: #fff;
    background: var(--primary);
    box-shadow: 0 4px 14px rgba(30, 94, 255, 0.25);
  }

  .header-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    box-shadow: 0 4px 16px rgba(255, 106, 61, 0.35);
    transition: var(--transition);
    flex-shrink: 0;
  }

  .header-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 106, 61, 0.4);
  }

  .nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: var(--bg-soft);
    cursor: pointer;
    transition: var(--transition);
  }

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

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

  .page-banner {
    position: relative;
    padding: 80px 0 60px;
    background: linear-gradient(135deg, #0d1f38 0%, #16294d 50%, #1e3d7a 100%);
    color: #fff;
    overflow: hidden;
  }

  .page-banner::before {
    content: '';
    position: absolute;
    top: -60%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(30, 94, 255, 0.5) 0%, transparent 70%);
    border-radius: 50%;
  }

  .page-banner::after {
    content: '';
    position: absolute;
    bottom: -80px;
    left: -40px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 106, 61, 0.3) 0%, transparent 70%);
    border-radius: 50%;
  }

  .page-banner .container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
    align-items: center;
  }

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

  .banner-breadcrumb a {
    color: rgba(255, 255, 255, 0.7);
  }

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

  .banner-breadcrumb .divider {
    opacity: 0.5;
  }

  .page-banner h1 {
    font-size: 42px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: 1px;
  }

  .page-banner h1 .highlight {
    color: transparent;
    background: linear-gradient(90deg, #ffc061, #ff8a4c);
    -webkit-background-clip: text;
    background-clip: text;
  }

  .banner-desc {
    font-size: 16px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.85);
    max-width: 520px;
    margin-bottom: 24px;
  }

  .banner-stats {
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
  }

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

  .banner-stat strong {
    display: block;
    font-size: 28px;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
  }

  .banner-stat span {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.65);
  }

  .banner-visual {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.15);
  }

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

  .banner-visual-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(13, 31, 56, 0.85) 0%, transparent 60%);
    display: flex;
    align-items: flex-end;
    padding: 24px;
  }

  .banner-overlay-content {
    color: #fff;
  }

  .banner-overlay-content .tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 999px;
    font-size: 12px;
    font-weight: 500;
    backdrop-filter: blur(6px);
    margin-bottom: 8px;
  }

  .banner-overlay-content p {
    font-size: 16px;
    font-weight: 600;
  }

  .section {
    padding: 90px 0;
  }

  .section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 48px;
  }

  .section-overline {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 12px;
  }

  .section-title {
    font-size: 34px;
    font-weight: 800;
    line-height: 1.3;
    color: var(--text);
    margin-bottom: 12px;
  }

  .section-subtitle {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.7;
  }

  .steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
  }

  .step-card {
    position: relative;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 24px;
    transition: var(--transition);
    overflow: hidden;
  }

  .step-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
  }

  .step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    margin-bottom: 18px;
    box-shadow: 0 6px 16px rgba(30, 94, 255, 0.3);
  }

  .step-card:nth-child(2) .step-number {
    background: linear-gradient(135deg, #0ea5e9, #2563eb);
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.3);
  }

  .step-card:nth-child(3) .step-number {
    background: linear-gradient(135deg, #f59e0b, #f97316);
    box-shadow: 0 6px 16px rgba(249, 115, 22, 0.3);
  }

  .step-card:nth-child(4) .step-number {
    background: linear-gradient(135deg, #10b981, #059669);
    box-shadow: 0 6px 16px rgba(16, 185, 129, 0.3);
  }

  .step-card h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text);
  }

  .step-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.8;
  }

  .platform-section {
    background: var(--bg-white);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }

  .platform-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }

  .platform-card {
    background: var(--bg-soft);
    border-radius: var(--radius);
    padding: 36px 28px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid transparent;
  }

  .platform-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    background: var(--bg-white);
  }

  .platform-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 68px;
    height: 68px;
    background: var(--bg-white);
    border-radius: 20px;
    font-size: 28px;
    color: var(--primary);
    margin-bottom: 18px;
    box-shadow: var(--shadow-sm);
  }

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

  .platform-card p {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 16px;
  }

  .platform-card .tag-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px;
  }

  .tag {
    display: inline-block;
    padding: 4px 12px;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: 12px;
    color: var(--text-light);
    transition: var(--transition);
  }

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

  .guide-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
  }

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

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

  .guide-image-badge {
    position: absolute;
    bottom: 20px;
    right: 20px;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(10px);
    padding: 10px 18px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    box-shadow: var(--shadow-md);
  }

  .guide-content h3 {
    font-size: 26px;
    font-weight: 800;
    margin-bottom: 12px;
    line-height: 1.4;
  }

  .guide-content p {
    font-size: 15px;
    color: var(--text-light);
    margin-bottom: 16px;
    line-height: 1.8;
  }

  .guide-list {
    margin-top: 20px;
  }

  .guide-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 8px 0;
    font-size: 15px;
    color: var(--text);
  }

  .guide-list i {
    color: var(--primary);
    margin-top: 5px;
    flex-shrink: 0;
  }

  .account-tips {
    background: var(--bg-soft);
    border-radius: var(--radius);
    padding: 24px;
    margin-top: 24px;
    border-left: 4px solid var(--primary);
  }

  .account-tips p {
    margin-bottom: 0;
    font-size: 14px;
  }

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

  .article-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }

  .article-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
  }

  .article-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
  }

  .article-cover {
    position: relative;
    height: 190px;
    overflow: hidden;
  }

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

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

  .article-cover .tag {
    position: absolute;
    top: 14px;
    left: 14px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    font-weight: 600;
    color: var(--primary);
  }

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

  .article-body h3 {
    font-size: 17px;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 8px;
    color: var(--text);
    transition: var(--transition);
  }

  .article-body h3:hover {
    color: var(--primary);
  }

  .article-body .meta {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--text-lighter);
    margin-bottom: 12px;
  }

  .article-body p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
    flex: 1;
  }

  .article-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    margin-top: 16px;
    transition: var(--transition);
  }

  .article-link:hover {
    gap: 12px;
  }

  .faq-section {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border);
  }

  .faq-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    max-width: 960px;
    margin: 0 auto;
  }

  .faq-item {
    background: var(--bg-soft);
    border-radius: var(--radius);
    padding: 24px;
    transition: var(--transition);
    border: 1px solid transparent;
  }

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

  .faq-item h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text);
    display: flex;
    gap: 10px;
    align-items: flex-start;
  }

  .faq-item h3 i {
    color: var(--primary);
    font-size: 14px;
    margin-top: 5px;
    flex-shrink: 0;
  }

  .faq-item p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
    padding-left: 24px;
  }

  .cta-section {
    background: linear-gradient(135deg, #0d1f38 0%, #1e3d7a 100%);
    color: #fff;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
  }

  .cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 400px;
    background: radial-gradient(ellipse, rgba(255, 106, 61, 0.4) 0%, transparent 70%);
    border-radius: 50%;
  }

  .cta-inner {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
  }

  .cta-inner h2 {
    font-size: 34px;
    font-weight: 800;
    margin-bottom: 14px;
  }

  .cta-inner p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 32px;
  }

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

  .btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
  }

  .btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: #fff;
    box-shadow: 0 6px 20px rgba(255, 106, 61, 0.4);
  }

  .btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 32px rgba(255, 106, 61, 0.5);
  }

  .btn-ghost {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(8px);
  }

  .btn-ghost:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-3px);
  }

  .site-footer {
    background: #0d1f38;
    color: rgba(255, 255, 255, 0.7);
    padding: 64px 0 0;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

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

  .footer-grid .logo strong {
    color: #fff;
  }

  .footer-grid .logo-icon {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    box-shadow: 0 4px 14px rgba(255, 106, 61, 0.4);
  }

  .footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    max-width: 340px;
  }

  .footer-title {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 18px;
    position: relative;
    padding-bottom: 10px;
  }

  .footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 24px;
    height: 3px;
    background: var(--accent);
    border-radius: 3px;
  }

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

  .footer-links a {
    transition: var(--transition);
  }

  .footer-links a:hover {
    color: var(--accent);
    padding-left: 4px;
  }

  .footer-links i {
    margin-right: 8px;
    color: var(--accent);
  }

  .footer-bottom {
    padding: 24px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
  }

  @media (max-width: 1024px) {
    .section {
      padding: 72px 0;
    }

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

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

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

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

    .page-banner .container {
      grid-template-columns: 1fr;
      gap: 32px;
    }

    .banner-visual {
      max-width: 560px;
    }

    .guide-layout {
      grid-template-columns: 1fr;
      gap: 36px;
    }
  }

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

    .main-nav {
      position: fixed;
      top: 72px;
      right: -100%;
      width: 280px;
      height: calc(100vh - 72px);
      background: var(--bg-white);
      flex-direction: column;
      padding: 32px 24px;
      gap: 24px;
      justify-content: flex-start;
      box-shadow: -8px 0 32px rgba(26, 35, 51, 0.12);
      transition: var(--transition);
      border-left: 1px solid var(--border);
      overflow-y: auto;
    }

    .main-nav.is-open {
      right: 0;
    }

    .nav-list {
      flex-direction: column;
      align-items: stretch;
      gap: 8px;
      width: 100%;
    }

    .nav-list a {
      display: block;
      padding: 12px 18px;
      border-radius: 10px;
    }

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

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

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

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

    .page-banner {
      padding: 56px 0 44px;
    }

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

    .section-title {
      font-size: 26px;
    }

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

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

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

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

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

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

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

    .header-inner {
      height: 64px;
    }

    .main-nav {
      top: 64px;
      height: calc(100vh - 64px);
    }

    .logo {
      font-size: 17px;
    }

    .logo-icon {
      width: 36px;
      height: 36px;
      font-size: 18px;
    }

    .banner-stats {
      gap: 20px;
    }

    .banner-stat strong {
      font-size: 22px;
    }

    .page-banner h1 {
      font-size: 25px;
    }

    .section {
      padding: 56px 0;
    }

    .section-title {
      font-size: 22px;
    }

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

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

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

/* roulang page: article */
/* ========== 设计变量 ========== */
:root {
    --primary: #0e4d6c;
    --primary-dark: #0a3550;
    --primary-light: #14658a;
    --accent: #e5a33d;
    --accent-hover: #c9872a;
    --bg: #f4f7fa;
    --surface: #ffffff;
    --text: #1a2d40;
    --muted: #61758a;
    --border: #dce5ed;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 6px 24px rgba(10, 53, 80, 0.08);
    --shadow-lg: 0 16px 40px rgba(10, 53, 80, 0.14);
    --transition: all 0.3s ease;
    --container: 1200px;
    --section-space: 80px;
}

/* ========== 基础 Reset ========== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}
img {
    max-width: 100%;
    display: block;
    height: auto;
}
a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}
a:hover {
    color: var(--primary-light);
}
ul, ol {
    list-style: none;
}
button, input, select, textarea {
    font: inherit;
    border: none;
    outline: none;
}
.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}
.container-narrow {
    max-width: 900px;
}
.section-head {
    text-align: center;
    margin-bottom: 48px;
}
.section-label {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--accent);
    background: rgba(229, 163, 61, 0.1);
    padding: 6px 16px;
    border-radius: 40px;
    margin-bottom: 14px;
}
.section-head h2 {
    font-size: 34px;
    font-weight: 800;
    color: var(--primary-dark);
    line-height: 1.3;
    margin-bottom: 12px;
}
.section-head p {
    color: var(--muted);
    max-width: 640px;
    margin: 0 auto;
    font-size: 16px;
}
.section-head.light h2 {
    color: #fff;
}
.section-head.light p {
    color: rgba(255, 255, 255, 0.75);
}
.section-head.light .section-label {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
}

/* ========== 按钮 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 600;
    padding: 12px 26px;
    border-radius: 999px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    line-height: 1.4;
}
.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 6px 18px rgba(14, 77, 108, 0.22);
}
.btn-primary:hover {
    background: var(--primary-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 10px 26px rgba(14, 77, 108, 0.28);
}
.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}
.btn-outline:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-2px);
}
.btn-accent {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 6px 18px rgba(229, 163, 61, 0.25);
}
.btn-accent:hover {
    background: var(--accent-hover);
    color: #fff;
    transform: translateY(-2px);
}

/* ========== 顶部导航 ========== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(220, 229, 237, 0.8);
}
.nav-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 74px;
    gap: 16px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 19px;
    font-weight: 700;
    color: var(--primary-dark);
    text-decoration: none;
    white-space: nowrap;
    flex-shrink: 0;
}
.logo:hover {
    color: var(--primary-dark);
}
.logo-icon {
    width: 38px;
    height: 38px;
    border-radius: 11px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 18px;
    box-shadow: 0 4px 12px rgba(14, 77, 108, 0.25);
}
.logo strong {
    font-weight: 900;
    color: var(--accent);
}
.main-nav {
    display: flex;
    align-items: center;
    gap: 20px;
}
.nav-list {
    display: flex;
    gap: 2px;
}
.nav-list a {
    display: block;
    padding: 10px 16px;
    border-radius: 999px;
    color: var(--text);
    font-weight: 500;
    font-size: 15px;
    text-decoration: none;
    transition: var(--transition);
    white-space: nowrap;
}
.nav-list a:hover {
    background: rgba(14, 77, 108, 0.07);
    color: var(--primary);
}
.nav-list a.active {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 12px rgba(14, 77, 108, 0.2);
}
.header-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent);
    color: #fff;
    font-weight: 700;
    font-size: 14px;
    padding: 10px 22px;
    border-radius: 999px;
    text-decoration: none;
    box-shadow: 0 4px 14px rgba(229, 163, 61, 0.3);
    transition: var(--transition);
    white-space: nowrap;
}
.header-cta:hover {
    background: var(--accent-hover);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(229, 163, 61, 0.36);
}

/* ========== 文章 Hero ========== */
.article-hero {
    position: relative;
    background: linear-gradient(135deg, rgba(10, 53, 80, 0.92), rgba(20, 93, 132, 0.82)), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
    padding: 88px 0 76px;
    color: #fff;
}
.article-hero .breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 24px;
}
.article-hero .breadcrumb a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    padding: 4px 0;
    border-radius: 4px;
}
.article-hero .breadcrumb a:hover {
    color: var(--accent);
}
.article-hero .breadcrumb span {
    opacity: 0.7;
}
.article-hero-title h1 {
    font-size: 38px;
    font-weight: 900;
    line-height: 1.3;
    max-width: 860px;
    letter-spacing: 0.5px;
    margin-bottom: 18px;
}
.article-hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}
.meta-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 999px;
    padding: 7px 16px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(6px);
}
.meta-badge i {
    color: var(--accent);
}

/* ========== 文章主体 ========== */
.article-main {
    position: relative;
    z-index: 3;
    padding: 0 24px;
    margin-top: -40px;
}
.article-card {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 52px 56px;
    border: 1px solid rgba(220, 229, 237, 0.6);
}
.article-content {
    font-size: 16.5px;
    line-height: 1.95;
    color: var(--text);
}
.article-content h2 {
    font-size: 26px;
    font-weight: 800;
    color: var(--primary-dark);
    margin: 36px 0 16px;
    padding-left: 16px;
    border-left: 4px solid var(--accent);
}
.article-content h3 {
    font-size: 21px;
    font-weight: 700;
    color: var(--primary-dark);
    margin: 30px 0 14px;
}
.article-content p {
    margin: 16px 0;
}
.article-content ul,
.article-content ol {
    margin: 18px 0;
    padding-left: 22px;
}
.article-content ul li,
.article-content ol li {
    margin: 8px 0;
    position: relative;
    line-height: 1.8;
}
.article-content ul li::before {
    content: '';
    position: absolute;
    left: -18px;
    top: 12px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
}
.article-content a {
    color: var(--primary);
    border-bottom: 1px solid rgba(14, 77, 108, 0.3);
    padding-bottom: 2px;
}
.article-content a:hover {
    color: var(--accent);
    border-color: var(--accent);
}
.article-content img {
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin: 28px 0;
}
.article-content blockquote {
    background: rgba(14, 77, 108, 0.05);
    border-left: 4px solid var(--accent);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 18px 22px;
    margin: 24px 0;
    color: var(--muted);
    font-style: italic;
}
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 15px;
}
.article-content table th,
.article-content table td {
    padding: 12px 16px;
    border: 1px solid var(--border);
    text-align: left;
}
.article-content table th {
    background: rgba(14, 77, 108, 0.06);
    font-weight: 600;
    color: var(--primary-dark);
}

/* ========== 标签 ========== */
.article-tags {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    margin-top: 44px;
    padding-top: 28px;
    border-top: 1px solid var(--border);
}
.article-tags i {
    color: var(--accent);
    font-size: 15px;
    margin-right: 4px;
}
.tag {
    background: rgba(14, 77, 108, 0.07);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 999px;
    border: 1px solid rgba(14, 77, 108, 0.08);
}
.tag:hover {
    background: var(--primary);
    color: #fff;
}

/* ========== 文章缺失 ========== */
.article-missing {
    text-align: center;
    padding: 60px 30px;
}
.missing-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: rgba(229, 163, 61, 0.1);
    color: var(--accent);
    font-size: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}
.article-missing h2 {
    font-size: 28px;
    font-weight: 800;
    color: var(--primary-dark);
    margin-bottom: 14px;
}
.article-missing p {
    color: var(--muted);
    max-width: 420px;
    margin: 0 auto 28px;
}

/* ========== 服务导航 ========== */
.service-nav {
    padding: var(--section-space) 0;
}
.service-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.service-card {
    background: var(--surface);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: block;
    color: var(--text);
}
.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    color: var(--text);
}
.service-img {
    position: relative;
    height: 180px;
    overflow: hidden;
}
.service-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.service-card:hover .service-img img {
    transform: scale(1.06);
}
.service-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(10, 53, 80, 0.35), transparent 60%);
}
.service-tag {
    position: absolute;
    left: 14px;
    bottom: 14px;
    z-index: 2;
    background: var(--accent);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    padding: 5px 14px;
    border-radius: 999px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.18);
}
.service-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-dark);
    margin: 20px 22px 8px;
}
.service-card p {
    font-size: 14px;
    color: var(--muted);
    line-height: 1.7;
    margin: 0 22px 22px;
}

/* ========== FAQ 帮助区 ========== */
.help-faq {
    padding: var(--section-space) 0;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: #fff;
}
.faq-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.faq-item {
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    padding: 28px 26px;
    transition: var(--transition);
}
.faq-item:hover {
    background: rgba(255, 255, 255, 0.11);
    transform: translateY(-4px);
}
.faq-item h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 12px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    line-height: 1.5;
}
.faq-item h3 i {
    color: var(--accent);
    margin-top: 3px;
    flex-shrink: 0;
}
.faq-item p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.78);
    line-height: 1.75;
}

/* ========== CTA 区域 ========== */
.cta-section {
    padding: var(--section-space) 0;
}
.cta-box {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
    padding: 48px 52px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    flex-wrap: wrap;
}
.cta-content h2 {
    font-size: 28px;
    font-weight: 800;
    color: var(--primary-dark);
    margin-bottom: 10px;
}
.cta-content p {
    color: var(--muted);
    max-width: 500px;
    line-height: 1.75;
}
.cta-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

/* ========== 页脚 ========== */
.site-footer {
    background: var(--primary-dark);
    color: rgba(255, 255, 255, 0.75);
    padding: 64px 0 0;
}
footer .site-footer .logo {
    color: #fff;
    margin-bottom: 16px;
}
footer .site-footer .logo strong {
    color: var(--accent);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.65);
    margin-top: 14px;
    max-width: 320px;
}
.footer-title {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 18px;
    position: relative;
    padding-bottom: 10px;
}
.footer-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 28px;
    height: 3px;
    border-radius: 4px;
    background: var(--accent);
}
.footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    transition: var(--transition);
}
.footer-links a:hover {
    color: var(--accent);
    padding-left: 6px;
}
.footer-links li {
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.7);
}
.footer-links li i {
    color: var(--accent);
    width: 18px;
    text-align: center;
}
.footer-bottom {
    padding: 22px 0;
    text-align: center;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
    .service-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .faq-grid {
        grid-template-columns: 1fr 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
    }
    .article-hero-title h1 {
        font-size: 32px;
    }
    .article-card {
        padding: 40px 36px;
    }
}

@media (max-width: 768px) {
    :root {
        --section-space: 56px;
    }
    .nav-bar {
        height: auto;
        padding: 10px 0;
        flex-wrap: wrap;
    }
    .main-nav {
        width: 100%;
        justify-content: space-between;
        gap: 10px;
        order: 3;
    }
    .nav-list {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        flex: 1;
        scrollbar-width: none;
    }
    .nav-list::-webkit-scrollbar {
        display: none;
    }
    .nav-list a {
        padding: 8px 12px;
        font-size: 14px;
    }
    .header-cta {
        padding: 8px 16px;
        font-size: 13px;
    }
    .logo {
        font-size: 17px;
    }
    .logo-icon {
        width: 34px;
        height: 34px;
        font-size: 16px;
    }
    .article-hero {
        padding: 64px 0 54px;
    }
    .article-hero-title h1 {
        font-size: 27px;
    }
    .article-card {
        padding: 30px 24px;
        margin: 0 -8px;
    }
    .service-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .faq-grid {
        grid-template-columns: 1fr;
    }
    .cta-box {
        padding: 36px 28px;
        flex-direction: column;
        align-items: flex-start;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .article-tags {
        margin-top: 32px;
        padding-top: 22px;
    }
}

@media (max-width: 520px) {
    .container {
        padding: 0 16px;
    }
    .logo {
        font-size: 15px;
    }
    .logo-icon {
        width: 32px;
        height: 32px;
        font-size: 15px;
        border-radius: 9px;
    }
    .header-cta {
        padding: 7px 12px;
        font-size: 12px;
        gap: 5px;
    }
    .nav-list a {
        padding: 7px 10px;
        font-size: 13px;
    }
    .article-hero-title h1 {
        font-size: 23px;
    }
    .meta-badge {
        font-size: 13px;
        padding: 5px 12px;
    }
    .article-card {
        padding: 24px 18px;
    }
    .article-content {
        font-size: 15.5px;
    }
    .section-head h2 {
        font-size: 26px;
    }
    .service-card h3 {
        font-size: 17px;
    }
    .cta-actions .btn {
        width: 100%;
    }
    .footer-links li {
        font-size: 13px;
    }
}

/* roulang page: category2 */
:root {
    --primary: #0f3a5f;
    --primary-light: #1b5a8a;
    --primary-dark: #0a2a45;
    --accent: #e8a33d;
    --accent-light: #f5b95c;
    --accent-dark: #c9852a;
    --bg: #f7f9fc;
    --bg-alt: #ffffff;
    --bg-deep: #0d1b2a;
    --text: #1e293b;
    --text-light: #5b6b7f;
    --text-lighter: #8a9aab;
    --border: #e2e8f0;
    --border-light: #eef2f6;
    --radius-sm: 10px;
    --radius: 16px;
    --radius-lg: 24px;
    --shadow-sm: 0 2px 8px rgba(15, 58, 95, 0.06);
    --shadow: 0 8px 24px rgba(15, 58, 95, 0.10);
    --shadow-lg: 0 18px 40px rgba(15, 58, 95, 0.14);
    --transition: all 0.3s ease;
    --max-w: 1200px;
    --spacer: 80px;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background-color: var(--bg);
    -webkit-font-smoothing: antialiased;
  }

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

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

  ul,
  ol {
    list-style: none;
  }

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

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

  /* header */
  .site-header {
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 76px;
  }

  .logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 0.5px;
    flex-shrink: 0;
  }

  .logo span {
    white-space: nowrap;
  }

  .logo strong {
    color: var(--accent);
    font-weight: 800;
  }

  .logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    border-radius: var(--radius-sm);
    font-size: 20px;
    font-weight: 800;
    box-shadow: 0 4px 12px rgba(15, 58, 95, 0.3);
  }

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

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

  .nav-list a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 18px;
    border-radius: 40px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
    transition: var(--transition);
    position: relative;
  }

  .nav-list a:hover {
    color: var(--primary);
    background: rgba(15, 58, 95, 0.06);
  }

  .nav-list a.active {
    color: var(--primary);
    background: rgba(15, 58, 95, 0.08);
    font-weight: 600;
  }

  .nav-list a.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 22px;
    height: 3px;
    border-radius: 4px;
    background: var(--accent);
  }

  .header-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    padding: 12px 24px;
    border-radius: 40px;
    font-weight: 600;
    font-size: 15px;
    box-shadow: 0 6px 18px rgba(15, 58, 95, 0.25);
    transition: var(--transition);
    white-space: nowrap;
  }

  .header-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 26px rgba(15, 58, 95, 0.35);
    color: #fff;
  }

  .nav-toggle {
    display: none;
    font-size: 22px;
    color: var(--primary);
    background: rgba(15, 58, 95, 0.08);
    border-radius: 8px;
    width: 42px;
    height: 42px;
    align-items: center;
    justify-content: center;
  }

  /* page hero */
  .page-hero {
    position: relative;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
    padding: 100px 0 90px;
    color: #fff;
    overflow: hidden;
  }

  .page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    opacity: 0.30;
    mix-blend-mode: overlay;
  }

  .page-hero::after {
    content: '';
    position: absolute;
    top: -60%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(232, 163, 61, 0.2), transparent 60%);
    border-radius: 50%;
  }

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

  .page-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 8px 18px;
    border-radius: 40px;
    font-size: 14px;
    letter-spacing: 0.5px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 22px;
    backdrop-filter: blur(8px);
  }

  .page-hero h1 {
    font-size: 48px;
    line-height: 1.25;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: 1px;
  }

  .page-hero p {
    max-width: 620px;
    margin: 0 auto 28px;
    color: rgba(255, 255, 255, 0.85);
    font-size: 17px;
    line-height: 1.8;
  }

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

  .page-hero-meta .tag {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.9);
    padding: 6px 16px;
    border-radius: 40px;
    font-size: 13px;
    backdrop-filter: blur(4px);
  }

  /* section base */
  .section {
    padding: var(--spacer) 0;
  }

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

  .section-header {
    text-align: center;
    margin-bottom: 50px;
  }

  .section-eyebrow {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: 12px;
  }

  .section-header h2 {
    font-size: 34px;
    font-weight: 800;
    margin-bottom: 14px;
    color: var(--primary);
    letter-spacing: 0.5px;
  }

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

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

  .service-card {
    background: var(--bg-alt);
    border-radius: var(--radius);
    padding: 36px 28px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
  }

  .service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), var(--accent-light));
    opacity: 0;
    transition: var(--transition);
  }

  .service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(15, 58, 95, 0.1);
  }

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

  .service-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: #fff;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    box-shadow: 0 6px 16px rgba(15, 58, 95, 0.2);
  }

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

  .service-card p {
    color: var(--text-light);
    font-size: 15px;
    line-height: 1.7;
  }

  /* security measures / feature split */
  .feature-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
  }

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

  .feature-image img {
    width: 100%;
    object-fit: cover;
    min-height: 400px;
  }

  .feature-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(15, 58, 95, 0.3), transparent 50%);
  }

  .feature-content h2 {
    font-size: 30px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 18px;
    line-height: 1.4;
  }

  .feature-content p {
    color: var(--text-light);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 24px;
  }

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

  .feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 15px;
    color: var(--text);
    line-height: 1.6;
  }

  .feature-list li i {
    color: var(--accent);
    font-size: 18px;
    margin-top: 2px;
    flex-shrink: 0;
  }

  /* stats band */
  .stats-band {
    background: var(--primary-dark);
    padding: 56px 0;
    color: #fff;
    position: relative;
    overflow: hidden;
  }

  .stats-band::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
    opacity: 0.12;
  }

  .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
    position: relative;
    z-index: 1;
  }

  .stat-item .stat-number {
    font-size: 46px;
    font-weight: 800;
    color: var(--accent);
    line-height: 1.2;
    margin-bottom: 6px;
  }

  .stat-item .stat-label {
    color: rgba(255, 255, 255, 0.7);
    font-size: 15px;
  }

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

  .step-card {
    position: relative;
    background: var(--bg-alt);
    border-radius: var(--radius);
    padding: 32px 26px 28px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: var(--transition);
    text-align: center;
  }

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

  .step-number {
    width: 46px;
    height: 46px;
    margin: 0 auto 18px;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    color: var(--primary-dark);
    font-weight: 800;
    font-size: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 16px rgba(232, 163, 61, 0.3);
  }

  .step-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
  }

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

  /* review / feedback */
  .review-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }

  .review-card {
    background: var(--bg-alt);
    border-radius: var(--radius);
    padding: 30px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
  }

  .review-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-4px);
  }

  .review-stars {
    color: var(--accent);
    font-size: 15px;
    letter-spacing: 2px;
    margin-bottom: 16px;
  }

  .review-card blockquote {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text);
    flex: 1;
    border-left: 3px solid var(--accent);
    padding-left: 16px;
    margin-bottom: 20px;
  }

  .review-author {
    display: flex;
    align-items: center;
    gap: 12px;
    border-top: 1px solid var(--border-light);
    padding-top: 16px;
  }

  .review-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    flex-shrink: 0;
  }

  .review-author strong {
    display: block;
    font-size: 14px;
    color: var(--text);
  }

  .review-author span {
    font-size: 12px;
    color: var(--text-lighter);
  }

  /* faq */
  .faq-wrap {
    max-width: 760px;
    margin: 0 auto;
  }

  .faq-item {
    background: var(--bg-alt);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-light);
    margin-bottom: 14px;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
  }

  .faq-item:hover {
    border-color: rgba(15, 58, 95, 0.15);
  }

  .faq-item summary {
    padding: 22px 26px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    list-style: none;
  }

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

  .faq-item summary i {
    color: var(--accent);
    transition: var(--transition);
    flex-shrink: 0;
  }

  .faq-item[open] summary i {
    transform: rotate(45deg);
  }

  .faq-item .faq-answer {
    padding: 0 26px 24px;
    color: var(--text-light);
    font-size: 15px;
    line-height: 1.8;
    border-top: 1px solid var(--border-light);
    padding-top: 16px;
  }

  /* cta */
  .cta-section {
    background: linear-gradient(135deg, var(--accent-dark), var(--accent) 60%, var(--accent-light));
    padding: 72px 0;
    color: var(--primary-dark);
    text-align: center;
    position: relative;
    overflow: hidden;
  }

  .cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
  }

  .cta-section h2 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 14px;
  }

  .cta-section p {
    font-size: 16px;
    opacity: 0.9;
    margin-bottom: 28px;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
  }

  .cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--primary-dark);
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    padding: 15px 36px;
    border-radius: 40px;
    box-shadow: 0 10px 24px rgba(13, 27, 42, 0.25);
    transition: var(--transition);
  }

  .cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 32px rgba(13, 27, 42, 0.35);
    color: #fff;
  }

  /* footer */
  .site-footer {
    background: var(--bg-deep);
    color: rgba(255, 255, 255, 0.65);
    padding-top: 60px;
    position: relative;
  }

  .site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-light), var(--accent));
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 48px;
    padding-bottom: 40px;
  }

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

  .footer-brand .logo-icon {
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    color: var(--primary-dark);
  }

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

  .footer-title {
    font-size: 16px;
    color: #fff;
    font-weight: 600;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
  }

  .footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 26px;
    height: 2px;
    background: var(--accent);
  }

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

  .footer-links a {
    color: rgba(255, 255, 255, 0.65);
    transition: var(--transition);
  }

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

  .footer-links i {
    margin-right: 8px;
    color: var(--accent);
    width: 16px;
  }

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 22px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
  }

  /* responsive */
  @media (max-width: 1024px) {
    :root {
      --spacer: 60px;
    }

    .cards-grid {
      gap: 20px;
    }

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

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

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

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

  @media (max-width: 768px) {
    .main-nav {
      display: none;
      position: absolute;
      top: 76px;
      left: 0;
      right: 0;
      background: var(--bg-alt);
      flex-direction: column;
      padding: 20px 24px 28px;
      box-shadow: 0 16px 40px rgba(0, 0, 0, 0.1);
      gap: 16px;
      border-bottom: 1px solid var(--border-light);
    }

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

    .nav-list {
      flex-direction: column;
      width: 100%;
      gap: 8px;
    }

    .nav-list a {
      width: 100%;
      justify-content: center;
    }

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

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

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

    .page-hero {
      padding: 70px 0 60px;
    }

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

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

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

    .feature-image img {
      min-height: 280px;
    }

    .stats-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }

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

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

    .footer-grid {
      grid-template-columns: 1fr;
      gap: 32px;
      padding-bottom: 20px;
    }

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

  @media (max-width: 520px) {
    .page-hero h1 {
      font-size: 24px;
    }

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

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

    .stat-item .stat-number {
      font-size: 34px;
    }

    .logo {
      font-size: 18px;
    }

    .logo-icon {
      width: 36px;
      height: 36px;
      font-size: 17px;
    }
  }