/* roulang page: index */
:root {
  --primary: #0F9D8F;
  --primary-dark: #0B6B62;
  --primary-light: #E6F4F2;
  --cta: #FF6A3D;
  --cta-hover: #E8552C;
  --bg: #F7F7F4;
  --card-bg: #FFFFFF;
  --dark: #123B3B;
  --text: #1F2D2D;
  --text-light: #5C6B6B;
  --border: #E5E8E7;
  --success: #16A34A;
  --warning: #D92D20;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --shadow-sm: 0 1px 3px rgba(18,40,40,0.06);
  --shadow-lg: 0 8px 24px rgba(18,40,40,0.10);
  --transition: 0.2s ease;
  --font-family: 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', 'Source Han Sans SC', sans-serif;
  --font-num: 'Inter', 'Helvetica Neue', Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

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

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

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

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

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

/* ===== 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
}

.header-inner {
  display: flex;
  align-items: center;
  height: 64px;
  gap: 24px;
}

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

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  letter-spacing: -0.01em;
}

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

.main-nav {
  display: flex;
  gap: 4px;
  flex: 1;
  justify-content: center;
}

.nav-link {
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  position: relative;
}

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

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

.nav-link.active::after {
  content: '';
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

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

.search-box {
  position: relative;
  width: 200px;
}

.search-box input {
  width: 100%;
  height: 38px;
  background: #F5F5F2;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 0 38px 0 14px;
  font-size: 14px;
  color: var(--text);
  outline: none;
  transition: var(--transition);
}

.search-box input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(15, 157, 143, 0.12);
  background: #fff;
}

.search-box input::placeholder { color: #9AA7A7; }

.search-box .search-icon {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  opacity: 0.5;
}

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

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

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

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

.btn-cta:hover { background: var(--cta-hover); border-color: var(--cta-hover); transform: translateY(-2px); box-shadow: 0 4px 12px rgba(255, 106, 61, 0.3); }

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

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

.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 4px 12px rgba(15, 157, 143, 0.3); }

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

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

.btn-outline-light:hover { border-color: #fff; background: rgba(255, 255, 255, 0.1); transform: translateY(-2px); }

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

.btn-light:hover { background: #f0f0f0; border-color: #f0f0f0; transform: translateY(-2px); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 22px;
  color: var(--text);
  align-items: center;
  justify-content: center;
}

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

/* ===== Hero ===== */
.hero {
  position: relative;
  background: linear-gradient(135deg, #123B3B 0%, #0B6B62 60%, #0F9D8F 100%);
  padding: 96px 0;
  color: #fff;
  overflow: hidden;
  min-height: 520px;
  display: flex;
  align-items: center;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.35;
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(18, 59, 59, 0.8) 30%, rgba(11, 107, 98, 0.4) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  margin-bottom: 24px;
  backdrop-filter: blur(4px);
}

.hero-tag::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--success);
  border-radius: 50%;
  display: inline-block;
  animation: pulse 2s infinite;
}

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

.hero h1 {
  font-size: 44px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.hero-sub {
  font-size: 18px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 32px;
  max-width: 560px;
}

.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== 信任指标 ===== */
.stats-bar {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 36px 0;
}

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

.stat-item {
  text-align: center;
  padding: 8px 16px;
}

.stat-num {
  font-family: var(--font-num);
  font-size: 36px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
}

.stat-num span { font-size: 20px; }

.stat-label {
  font-size: 14px;
  color: var(--text-light);
  margin-top: 4px;
}

/* ===== 板块通用 ===== */
.section {
  padding: 72px 0;
}

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

.section-title-wrap .section-sub {
  color: var(--text-light);
  font-size: 15px;
  max-width: 560px;
  margin: 12px auto 0;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
  line-height: 1.3;
}

.section-title .highlight { color: var(--primary); }

/* ===== 优惠阶梯 ===== */
.tier-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.tier-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  position: relative;
}

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

.tier-card.featured {
  border: 1.5px solid var(--primary);
  background: var(--primary-light);
  box-shadow: 0 8px 24px rgba(15, 157, 143, 0.15);
}

.tier-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--cta);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

.tier-name {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}

.tier-price {
  font-family: var(--font-num);
  font-size: 36px;
  font-weight: 700;
  color: var(--cta);
  line-height: 1.2;
  margin-bottom: 20px;
}

.tier-price .unit { font-size: 14px; font-weight: 400; color: var(--text-light); }

.tier-list {
  list-style: none;
  margin-bottom: 28px;
  flex: 1;
}

.tier-list li {
  padding: 6px 0;
  font-size: 14px;
  color: var(--text);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.tier-list li::before {
  content: '✓';
  color: var(--success);
  font-weight: 700;
  flex-shrink: 0;
  font-size: 14px;
  margin-top: 1px;
}

.tier-list li.disabled { color: #B0BABA; }

.tier-list li.disabled::before {
  content: '✗';
  color: #C0CACA;
}

/* ===== 最新动态 CMS ===== */
.news-section {
  background: #fff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.news-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}

.news-head .section-title { margin-bottom: 0; }

.news-more {
  color: var(--primary);
  font-size: 14px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}

.news-more:hover { gap: 8px; }

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

.news-card {
  display: flex;
  gap: 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  transition: var(--transition);
}

.news-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
  transform: translateY(-2px);
}

.news-thumb {
  width: 160px;
  height: 120px;
  border-radius: var(--radius-md);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--primary-light);
}

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

.news-body {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-tag {
  display: inline-block;
  align-self: flex-start;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: var(--radius-pill);
  margin-bottom: 6px;
}

.news-body h3 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

.news-body p {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.news-meta {
  font-size: 12px;
  color: #9AA7A7;
  display: flex;
  gap: 12px;
  align-items: center;
}

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 48px 24px;
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  color: var(--text-light);
  font-size: 15px;
  background: #FAFAF8;
}

.empty-state .empty-icon {
  font-size: 36px;
  margin-bottom: 12px;
  opacity: 0.4;
}

/* ===== 套餐对比 ===== */
.compare-wrap {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
}

.compare-table th,
.compare-table td {
  padding: 16px 20px;
  text-align: center;
  font-size: 14px;
}

.compare-table thead th {
  background: var(--dark);
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  padding: 20px;
}

.compare-table thead th:first-child {
  text-align: left;
  background: var(--dark);
}

.compare-table thead th.recommend-col {
  background: var(--primary-dark);
  position: relative;
}

.recommend-col .recommend-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--cta);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 14px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

.compare-table tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background 0.15s;
}

.compare-table tbody tr:hover { background: #FAFAF8; }

.compare-table tbody tr:last-child { border-bottom: none; }

.compare-table tbody td {
  color: var(--text);
}

.compare-table tbody td:first-child {
  text-align: left;
  font-weight: 500;
  color: var(--text);
}

.compare-table tbody tr.highlight-row {
  background: var(--primary-light);
}

.compare-table tbody tr.highlight-row:hover { background: var(--primary-light); }

.compare-table .icon-yes { color: var(--success); font-weight: 700; }

.compare-table .icon-no { color: #C0CACA; }

.compare-foot {
  display: flex;
  gap: 16px;
  padding: 24px;
  background: #FAFAF8;
  border-top: 1px solid var(--border);
  justify-content: center;
}

/* ===== 限时入口 ===== */
.limited-section {
  padding: 72px 0;
}

.limited-banner {
  background: linear-gradient(135deg, var(--cta) 0%, var(--warning) 100%);
  border-radius: var(--radius-lg);
  padding: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.limited-banner::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 300px;
  height: 300px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
}

.limited-left h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 8px;
}

.limited-left p {
  font-size: 15px;
  opacity: 0.9;
}

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

.countdown-item {
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  text-align: center;
  min-width: 70px;
  backdrop-filter: blur(4px);
}

.countdown-num {
  font-family: var(--font-num);
  font-size: 32px;
  font-weight: 700;
  line-height: 1;
  display: block;
}

.countdown-label {
  font-size: 12px;
  opacity: 0.8;
  display: block;
  margin-top: 4px;
}

.limited-right {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

/* ===== 咨询表单 ===== */
.contact-section {
  background: #fff;
  border-top: 1px solid var(--border);
}

.contact-grid {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 48px;
  align-items: start;
}

.contact-info h3 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 16px;
}

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

.contact-detail-list {
  list-style: none;
  margin-bottom: 24px;
}

.contact-detail-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text);
}

.contact-detail-list li .c-icon {
  width: 36px;
  height: 36px;
  background: var(--primary-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 16px;
  flex-shrink: 0;
}

.contact-detail-list li strong { font-weight: 600; color: var(--text); }

.qr-placeholder {
  width: 140px;
  height: 140px;
  background: var(--primary-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 14px;
  font-weight: 500;
}

.contact-form-wrap {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.form-group { margin-bottom: 20px; }

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

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  height: 44px;
  background: #F9FAFA;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0 14px;
  font-size: 14px;
  color: var(--text);
  outline: none;
  transition: var(--transition);
}

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

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(15, 157, 143, 0.12);
  background: #fff;
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: #A0ADAD; }

.form-submit {
  width: 100%;
}

.form-note {
  font-size: 12px;
  color: #9AA7A7;
  text-align: center;
  margin-top: 12px;
}

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

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

.faq-item:hover { border-color: var(--primary-light); }

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

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  transition: var(--transition);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
}

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

.faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: var(--transition);
  flex-shrink: 0;
}

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

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

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
}

/* ===== CTA 横幅 ===== */
.cta-banner {
  background: var(--dark);
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  opacity: 0.15;
}

.cta-banner h2 {
  font-size: 28px;
  margin-bottom: 12px;
  position: relative;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 24px;
  position: relative;
}

.cta-banner .btn { position: relative; }

/* ===== 页脚 ===== */
.site-footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 48px 0 0;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 40px;
}

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

.footer-brand .logo-text .logo-highlight { color: #4DD0C6; }

.footer-brand p {
  margin-top: 16px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.7;
  font-size: 14px;
}

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

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

.footer-column ul li { margin-bottom: 8px; }

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

.footer-column ul a:hover { color: #fff; text-decoration: underline; }

.footer-contact p {
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 8px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

/* ===== 动画 ===== */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== 响应式 ===== */
@media (max-width: 991px) {
  .main-nav .nav-link { padding: 8px 10px; font-size: 14px; }
  .search-box { width: 160px; }
  .tier-grid { grid-template-columns: repeat(3, 1fr); }
  .tier-card { padding: 28px 20px; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 767px) {
  .site-header { height: 56px; }
  .header-inner { height: 56px; gap: 12px; }
  .nav-logo .logo-text { font-size: 16px; }
  .main-nav, .nav-tools { display: none; }
  .nav-toggle { display: flex; }
  .nav-open .main-nav {
    display: flex;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    gap: 4px;
  }
  .nav-open .nav-tools {
    display: flex;
    position: absolute;
    top: auto;
    left: 0;
    right: 0;
    background: #fff;
    padding: 0 24px 16px;
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
  }
  .nav-open .nav-tools .search-box { width: 100%; }
  .nav-open .nav-tools .btn-cta { margin-top: 8px; }

  .hero { padding: 64px 0; min-height: auto; }
  .hero h1 { font-size: 30px; }
  .hero-sub { font-size: 16px; }
  .hero-btns .btn { width: 100%; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat-num { font-size: 28px; }

  .section { padding: 48px 0; }
  .section-title { font-size: 26px; }
  .tier-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .news-card { flex-direction: column; }
  .news-thumb { width: 100%; height: 180px; }
  .compare-wrap { overflow-x: auto; }
  .compare-table { min-width: 640px; }
  .compare-foot { flex-direction: column; padding: 16px; }
  .compare-foot .btn { width: 100%; }
  .limited-banner { flex-direction: column; text-align: center; padding: 32px 24px; }
  .countdown { justify-content: center; }
  .countdown-item { min-width: 60px; padding: 10px 12px; }
  .limited-right .btn { width: 100%; }
  .contact-form-wrap { padding: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { padding: 16px 0; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .logo-icon { width: 32px; height: 32px; font-size: 16px; }
  .logo-text { font-size: 15px; }
  .countdown-item { min-width: 55px; }
  .countdown-num { font-size: 24px; }
  .btn { padding: 10px 20px; font-size: 14px; }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --primary: #0F9D8F;
  --primary-dark: #0B6B62;
  --primary-light: #E6F4F2;
  --cta: #FF6A3D;
  --cta-dark: #E8552C;
  --bg: #F7F7F4;
  --card: #FFFFFF;
  --dark: #123B3B;
  --text: #1F2D2D;
  --text-secondary: #5C6B6B;
  --border: #E5E8E7;
  --success: #16A34A;
  --warning: #D92D20;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 3px rgba(18,40,40,0.06);
  --shadow-md: 0 8px 24px rgba(18,40,40,0.10);
  --transition: all 0.2s ease;
}
/* ===== Reset / Base ===== */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Source Han Sans SC", "Inter", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color .2s ease; }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; font-size: 15px; }
ul, ol { list-style: none; }
section { position: relative; }
/* ===== 容器 ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
/* ===== 通用按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 15px;
  border: 1px solid transparent;
  transition: var(--transition);
  cursor: pointer;
  white-space: nowrap;
}
.btn-sm { padding: 8px 20px; font-size: 14px; border-radius: 8px; }
.btn-cta { background: var(--cta); color: #fff; }
.btn-cta:hover { background: var(--cta-dark); transform: translateY(-2px); box-shadow: 0 6px 16px rgba(255,106,61,0.35); }
.btn-cta:active { transform: translateY(0); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 16px rgba(15,157,143,0.3); }
.btn-white { background: #fff; color: var(--primary-dark); }
.btn-white:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 6px 16px rgba(255,255,255,0.25); }
.btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
  height: 64px;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 16px;
}
.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
}
.logo-text { font-size: 20px; font-weight: 700; color: var(--dark); letter-spacing: -0.01em; }
.logo-highlight { color: var(--primary); }
.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  justify-content: center;
}
.nav-link {
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-radius: 8px;
  position: relative;
  transition: var(--transition);
}
.nav-link:hover { color: var(--primary); background: var(--primary-light); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after {
  content: '';
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
}
.nav-tools {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.search-box {
  position: relative;
  width: 200px;
}
.search-box input {
  width: 100%;
  height: 38px;
  border-radius: 8px;
  border: 1px solid transparent;
  background: #F5F5F2;
  padding: 0 34px 0 14px;
  font-size: 14px;
  color: var(--text);
  outline: none;
  transition: var(--transition);
}
.search-box input::placeholder { color: #9AA8A8; }
.search-box input:focus {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(15,157,143,0.12);
}
.search-icon {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: #9AA8A8;
  pointer-events: none;
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--dark);
  padding: 6px;
  border-radius: 8px;
}
.nav-toggle:hover { background: var(--bg); }
/* ===== 移动端菜单 ===== */
.mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  background: #fff;
  z-index: 99;
  padding: 24px 20px;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}
.mobile-menu.open { display: flex; }
.mobile-menu .nav-link {
  padding: 14px 16px;
  font-size: 16px;
  border-radius: 10px;
  display: block;
}
.mobile-menu .nav-link.active { background: var(--primary-light); }
.mobile-menu .btn { margin-top: 16px; width: 100%; }
/* ===== Page Hero ===== */
.page-hero {
  background: linear-gradient(135deg, rgba(18,59,59,0.94) 0%, rgba(11,107,98,0.84) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  padding: 72px 0 64px;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.page-hero::after {
  content: '';
  position: absolute;
  right: -80px;
  top: -80px;
  width: 300px;
  height: 300px;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 50%;
  pointer-events: none;
}
.page-hero::before {
  content: '';
  position: absolute;
  left: 20%;
  bottom: -100px;
  width: 220px;
  height: 220px;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 50%;
  pointer-events: none;
}
.page-hero .container { position: relative; z-index: 2; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 28px;
}
.breadcrumb a { color: rgba(255,255,255,0.85); }
.breadcrumb a:hover { color: #fff; text-decoration: underline; }
.crumb-sep { opacity: 0.6; }
.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  margin-bottom: 20px;
  backdrop-filter: blur(4px);
}
.page-hero h1 {
  font-size: 40px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  max-width: 720px;
}
.page-hero .hero-desc {
  font-size: 16px;
  line-height: 1.7;
  color: rgba(255,255,255,0.82);
  max-width: 640px;
}
/* ===== 图文内容区 ===== */
.guide-section { padding: 72px 0; }
.guide-grid {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 56px;
  align-items: center;
}
.guide-image img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}
.guide-badge {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 14px;
}
.guide-content h2 {
  font-size: 30px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--text);
  margin-bottom: 20px;
}
.guide-content p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 16px;
}
.guide-content h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin: 24px 0 10px;
  padding-left: 14px;
  border-left: 3px solid var(--primary);
  line-height: 1.4;
}
.steps-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 24px;
}
.step-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  text-align: center;
}
.step-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
}
.step-item h4 { font-size: 15px; font-weight: 600; color: var(--text); }
.step-item p { font-size: 13px; color: var(--text-secondary); margin: 6px 0 0; line-height: 1.5; }
/* ===== 子栏目卡片 ===== */
.subcards-section {
  background: var(--card);
  padding: 72px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 44px;
}
.section-header .section-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 12px;
}
.section-header h2 {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--text);
  margin-bottom: 12px;
}
.section-header p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
}
.subcards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.subcard {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px 24px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.subcard:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}
.subcard-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transition: var(--transition);
}
.subcard:hover .subcard-icon { background: var(--primary); color: #fff; }
.subcard h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
  line-height: 1.4;
}
.subcard p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 18px;
  flex: 1;
}
.subcard-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}
.subcard-link:hover { color: var(--primary-dark); gap: 10px; }
.subcard-link svg { width: 14px; height: 14px; }
/* ===== 延伸阅读 ===== */
.related-section { padding: 72px 0; }
.related-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 960px;
  margin: 0 auto;
}
.related-card {
  display: flex;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.related-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.related-card img {
  width: 200px;
  height: 150px;
  object-fit: cover;
  flex-shrink: 0;
}
.related-info {
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.related-info h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 10px;
}
.related-info p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}
.related-link {
  margin-top: 12px;
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
}
.related-link:hover { color: var(--primary-dark); text-decoration: underline; }
/* ===== FAQ ===== */
.faq-section {
  padding: 72px 0;
  background: linear-gradient(180deg, var(--card) 0%, var(--bg) 100%);
  border-top: 1px solid var(--border);
}
.faq-list {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(15,157,143,0.08);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  transition: var(--transition);
}
.faq-question:hover { color: var(--primary); }
.faq-icon {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 400;
  flex-shrink: 0;
  transition: transform 0.3s ease;
}
.faq-item.active .faq-icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 24px;
}
.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px;
}
.faq-answer p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
}
/* ===== CTA Banner ===== */
.cta-banner {
  background: linear-gradient(120deg, var(--cta) 0%, var(--warning) 100%);
  padding: 60px 0;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-banner::after {
  content: '';
  position: absolute;
  right: -60px;
  bottom: -60px;
  width: 180px;
  height: 180px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50%;
}
.cta-banner .container { position: relative; z-index: 2; }
.cta-banner h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.cta-banner p {
  font-size: 16px;
  color: rgba(255,255,255,0.92);
  margin-bottom: 28px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.cta-banner .btn { font-size: 16px; padding: 14px 36px; }
/* ===== Footer ===== */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.8);
  padding: 60px 0 0;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .nav-logo {
  margin-bottom: 16px;
}
.footer-brand .logo-text { color: #fff; }
.footer-brand .logo-highlight { color: #4FD1C5; }
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,0.65);
  max-width: 320px;
}
.footer-column h4 {
  font-size: 15px;
  color: #fff;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-column ul li { margin-bottom: 10px; }
.footer-column ul li a { color: rgba(255,255,255,0.65); }
.footer-column ul li a:hover { color: #fff; text-decoration: underline; }
.footer-contact p { margin-bottom: 10px; color: rgba(255,255,255,0.65); }
.footer-bottom {
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}
/* ===== 响应式 ===== */
@media (max-width: 991px) {
  .main-nav { display: none; }
  .nav-tools .search-box { display: none; }
  .nav-toggle { display: inline-flex; }
  .guide-grid { grid-template-columns: 1fr; gap: 32px; }
  .guide-image img { height: 320px; }
  .subcards-grid { grid-template-columns: 1fr 1fr; }
  .steps-row { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 767px) {
  .container { padding: 0 16px; }
  .site-header, .header-inner { height: 56px; }
  .mobile-menu { top: 56px; }
  .page-hero { padding: 56px 0 48px; }
  .page-hero h1 { font-size: 30px; }
  .page-hero .hero-desc { font-size: 15px; }
  .guide-section, .subcards-section, .related-section, .faq-section { padding: 48px 0; }
  .guide-content h2, .section-header h2, .cta-banner h2 { font-size: 24px; }
  .guide-image img { height: 240px; }
  .steps-row { grid-template-columns: 1fr 1fr; gap: 12px; }
  .step-item { padding: 16px 12px; }
  .subcards-grid { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .related-card { flex-direction: column; }
  .related-card img { width: 100%; height: 160px; }
  .related-info { padding: 16px; }
  .cta-banner { padding: 48px 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .nav-logo .logo-text { font-size: 18px; }
}

/* roulang page: article */
:root {
  --primary: #0F9D8F;
  --primary-dark: #0B6B62;
  --primary-light: #E6F4F2;
  --cta: #FF6A3D;
  --cta-dark: #E8552C;
  --bg: #F7F7F4;
  --card: #FFFFFF;
  --dark: #123B3B;
  --text: #1F2D2D;
  --text-secondary: #5C6B6B;
  --border: #E5E8E7;
  --success: #16A34A;
  --warning: #D92D20;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(18,40,40,0.06);
  --shadow-hover: 0 8px 24px rgba(18,40,40,0.10);
  --transition: 0.2s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:'Inter','PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Source Han Sans SC',sans-serif;background:var(--bg);color:var(--text);line-height:1.7;min-height:100vh}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
main{padding-bottom:40px}

.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:var(--radius-md);font-weight:600;border:none;cursor:pointer;transition:all var(--transition);line-height:1.2}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.btn-cta{background:var(--cta);color:#fff}
.btn-cta:hover{background:var(--cta-dark);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn-sm{padding:8px 18px;font-size:14px}
.btn-primary{background:var(--primary);color:#fff;padding:10px 24px;font-size:14px}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn-block{width:100%}
.btn-white{background:#fff;color:var(--primary-dark);padding:12px 30px;font-size:15px;border-radius:var(--radius-md)}
.btn-white:hover{background:var(--primary-light);transform:translateY(-2px);box-shadow:0 10px 28px rgba(0,0,0,0.18)}

.site-header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--border);box-shadow:0 1px 4px rgba(0,0,0,0.05);height:64px}
.header-inner{display:flex;align-items:center;height:64px;gap:32px}
.nav-logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-icon{width:36px;height:36px;border-radius:10px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;flex-shrink:0}
.logo-text{font-size:18px;font-weight:600;color:var(--dark);letter-spacing:-0.01em;white-space:nowrap}
.logo-highlight{color:var(--primary)}
.main-nav{display:flex;gap:28px;margin-left:12px;align-items:center}
.nav-link{font-size:15px;color:var(--text);font-weight:500;position:relative;padding:6px 0;transition:color var(--transition)}
.nav-link:hover{color:var(--primary)}
.nav-link.active{color:var(--primary)}
.nav-link.active::after{content:'';position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--primary);border-radius:2px}
.nav-tools{margin-left:auto;display:flex;align-items:center;gap:16px}
.search-box{width:200px;height:36px;background:#F5F5F2;border-radius:var(--radius-sm);display:flex;align-items:center;padding:0 12px;border:1px solid transparent;transition:all var(--transition)}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(15,157,143,0.12)}
.search-box input{flex:1;background:none;border:none;outline:none;font-size:14px;color:var(--text);min-width:0}
.search-box input::placeholder{color:var(--text-secondary)}
.search-icon{width:16px;height:16px;color:var(--text-secondary);flex-shrink:0}
.nav-toggle{display:none;background:none;border:none;color:var(--text);cursor:pointer;padding:4px;border-radius:6px}
.nav-toggle:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-secondary);padding:28px 0 8px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-secondary);transition:color var(--transition);border-bottom:1px solid transparent}
.breadcrumb a:hover{color:var(--primary);border-bottom-color:var(--primary)}
.breadcrumb .sep{color:#B8C2C2;user-select:none}
.breadcrumb .current{color:var(--text);font-weight:500}

.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;padding:32px 0 0;align-items:start}
.article-main{min-width:0}
.article-header,.article-body,.article-empty{max-width:760px}
.article-header{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:40px 48px;box-shadow:var(--shadow)}
.article-meta{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:16px}
.article-cat{background:var(--primary-light);color:var(--primary-dark);padding:4px 14px;border-radius:999px;font-size:13px;font-weight:500}
.article-date{font-size:14px;color:var(--text-secondary);display:inline-flex;align-items:center;gap:6px}
.article-header h1{font-size:34px;line-height:1.25;font-weight:700;color:var(--text);letter-spacing:-0.02em}
.article-excerpt{margin-top:16px;font-size:16px;color:var(--text-secondary);line-height:1.7}
.article-body{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:40px 48px;margin-top:24px;font-size:16px;line-height:1.8;color:var(--text);box-shadow:var(--shadow)}
.article-body h2{font-size:24px;font-weight:600;margin:32px 0 16px;color:var(--text);letter-spacing:-0.01em}
.article-body h3{font-size:20px;font-weight:600;margin:28px 0 12px;color:var(--text)}
.article-body h4{font-size:18px;font-weight:600;margin:24px 0 10px;color:var(--text)}
.article-body p{margin-bottom:16px}
.article-body ul,.article-body ol{margin:16px 0;padding-left:24px}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:8px}
.article-body blockquote{border-left:4px solid var(--primary);background:var(--primary-light);padding:15px 20px;border-radius:0 var(--radius-sm) var(--radius-sm) 0;margin:24px 0;color:var(--text-secondary);font-style:italic}
.article-body img{border-radius:var(--radius-md);margin:24px 0;width:auto;max-width:100%}
.article-body a{color:var(--primary);border-bottom:1px solid transparent;transition:border-color var(--transition)}
.article-body a:hover{border-bottom-color:var(--primary)}
.article-body hr{border:none;border-top:1px solid var(--border);margin:32px 0}
.article-body strong{font-weight:600;color:var(--text)}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--border);padding:10px 14px;text-align:left}
.article-body th{background:var(--primary-light);color:var(--primary-dark);font-weight:600}
.article-body code{background:#F5F5F2;padding:2px 8px;border-radius:6px;font-size:14px;font-family:'SFMono-Regular',Consolas,monospace}
.article-empty{background:var(--card);border:2px dashed var(--border);border-radius:var(--radius-lg);padding:88px 24px;text-align:center;margin-top:24px;color:var(--text-secondary)}
.article-empty p{font-size:18px;margin-bottom:20px}
.article-return{margin-top:32px;text-align:center}
.article-return a{color:var(--text-secondary);font-size:15px;transition:all var(--transition);border-bottom:1px solid transparent;display:inline-flex;align-items:center;gap:6px}
.article-return a:hover{color:var(--primary);border-bottom-color:var(--primary)}
.article-sidebar{position:sticky;top:88px}
.app-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px 24px;text-align:center;box-shadow:var(--shadow);transition:box-shadow var(--transition)}
.app-card:hover{box-shadow:var(--shadow-hover)}
.app-card-icon{width:56px;height:56px;background:var(--primary);color:#fff;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;font-size:26px;font-weight:700;margin-bottom:14px}
.app-card h3{font-size:18px;font-weight:600;margin-bottom:10px;color:var(--text)}
.app-card p{font-size:14px;color:var(--text-secondary);margin-bottom:16px;line-height:1.6}
.app-qr{width:128px;height:128px;background:#fff;border:1px solid var(--border);border-radius:10px;margin:0 auto 18px;position:relative;overflow:hidden}
.app-qr::before{content:'';position:absolute;width:30px;height:30px;background:var(--dark);top:12px;left:12px;border-radius:4px;box-shadow:22px 10px 0 -6px var(--dark),10px 26px 0 -2px var(--dark),30px 30px 0 -10px var(--dark)}
.app-qr::after{content:'';position:absolute;width:22px;height:22px;background:var(--dark);bottom:14px;right:14px;border-radius:3px;box-shadow:-18px -2px 0 -4px var(--dark),-4px -20px 0 -6px var(--dark)}
.app-card .btn{margin-top:4px}

.related-section{margin-top:64px}
.related-section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.related-section-header h2{font-size:24px;font-weight:700;color:var(--text);letter-spacing:-0.01em}
.related-section-header a{font-size:14px;color:var(--primary);font-weight:500;transition:color var(--transition)}
.related-section-header a:hover{color:var(--primary-dark)}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);transition:all var(--transition);display:flex;flex-direction:column}
.related-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px);border-color:var(--primary-light)}
.related-card img{width:100%;height:168px;object-fit:cover}
.related-card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.related-tag{background:var(--primary-light);color:var(--primary-dark);font-size:12px;padding:3px 12px;border-radius:999px;font-weight:500;align-self:flex-start}
.related-card h3{font-size:16px;font-weight:600;margin:12px 0 8px;line-height:1.5;flex:1}
.related-card h3 a{transition:color var(--transition)}
.related-card h3 a:hover{color:var(--primary)}
.related-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-secondary);margin-top:10px}
.related-more{display:inline-flex;align-items:center;gap:4px;color:var(--primary);font-size:14px;font-weight:500;margin-top:12px;transition:color var(--transition)}
.related-more:hover{color:var(--primary-dark)}

.article-cta{margin-top:64px;background:linear-gradient(120deg,rgba(18,59,59,0.94),rgba(11,107,98,0.88)),url('/assets/images/backpic/back-2.png') center/cover no-repeat;border-radius:var(--radius-lg);padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;position:relative;overflow:hidden}
.article-cta::after{content:'';position:absolute;width:200px;height:200px;border:1px solid rgba(255,255,255,0.12);border-radius:50%;top:-80px;right:40px}
.article-cta h2{color:#fff;font-size:26px;font-weight:700;letter-spacing:-0.01em;position:relative;z-index:1}
.article-cta p{color:rgba(255,255,255,0.82);font-size:15px;margin-top:8px;position:relative;z-index:1}
.article-cta .btn{position:relative;z-index:1;flex-shrink:0}

.site-footer{background:var(--dark);color:rgba(255,255,255,0.82);padding:60px 0 0;margin-top:80px}
.site-footer .nav-logo .logo-text{color:#fff}
.site-footer .nav-logo .logo-highlight{color:#56D6C9}
.site-footer p{font-size:14px;line-height:1.7}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:48px;padding-bottom:48px}
.footer-brand p{margin-top:16px;color:rgba(255,255,255,0.62);max-width:340px;font-size:14px;line-height:1.7}
.footer-column h4{color:#fff;font-size:16px;font-weight:600;margin-bottom:18px}
.footer-column ul li{margin-bottom:12px}
.footer-column ul a{color:rgba(255,255,255,0.68);font-size:14px;transition:all var(--transition)}
.footer-column ul a:hover{color:#fff;text-decoration:underline}
.footer-contact p{color:rgba(255,255,255,0.68);font-size:14px;margin-bottom:8px}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.12);padding:20px 0;text-align:center;font-size:13px;color:rgba(255,255,255,0.5)}

@media (max-width:991px){
  .article-layout{grid-template-columns:1fr;gap:32px}
  .article-sidebar{position:static}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .header-inner{gap:20px}
  .main-nav{gap:20px}
  .search-box{width:160px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .site-header,.header-inner{height:56px}
  .header-inner{gap:12px}
  .logo-text{font-size:16px}
  .logo-icon{width:32px;height:32px;font-size:16px;border-radius:8px}
  .main-nav{display:none;position:fixed;top:56px;left:0;right:0;background:#fff;flex-direction:column;gap:0;padding:8px 24px;box-shadow:0 12px 32px rgba(0,0,0,0.10);border-bottom:1px solid var(--border)}
  .main-nav.open{display:flex}
  .nav-link{padding:14px 0;border-bottom:1px solid var(--border);font-size:15px}
  .nav-link:last-child{border-bottom:none}
  .nav-link.active::after{display:none}
  .nav-tools{gap:8px}
  .search-box{display:none}
  .btn-sm{padding:6px 12px;font-size:13px}
  .nav-toggle{display:flex}
  .breadcrumb{padding:20px 0 4px}
  .article-layout{padding-top:20px;gap:24px}
  .article-header{padding:24px 20px}
  .article-header h1{font-size:27px}
  .article-body{padding:24px 20px;font-size:16px}
  .article-excerpt{font-size:15px}
  .related-grid{grid-template-columns:1fr}
  .related-card img{height:180px}
  .article-cta{flex-direction:column;text-align:center;padding:32px 24px;gap:20px}
  .article-cta .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-brand p{max-width:100%}
  .footer-bottom{text-align:center;padding:18px 0}
}

/* roulang page: category2 */
:root {
  --primary: #0F9D8F;
  --primary-dark: #0B6B62;
  --primary-light: #E6F4F2;
  --cta: #FF6A3D;
  --cta-dark: #E8552C;
  --bg: #F7F7F4;
  --card-bg: #FFFFFF;
  --dark: #123B3B;
  --text: #1F2D2D;
  --text-sub: #5C6B6B;
  --border: #E5E8E7;
  --success: #16A34A;
  --warning: #D92D20;
  --font-cn: 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', 'Source Han Sans SC', sans-serif;
  --font-num: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --shadow-card: 0 1px 3px rgba(18, 40, 40, 0.06);
  --shadow-hover: 0 8px 24px rgba(18, 40, 40, 0.10);
  --shadow-header: 0 1px 4px rgba(0, 0, 0, 0.05);
  --space-section: 72px;
  --space-section-mobile: 48px;
  --container-max: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-cn);
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
  list-style: none;
}

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

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

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

.section-header {
  text-align: center;
  margin-bottom: 40px;
}

.section-header h2 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.section-header p {
  color: var(--text-sub);
  margin-top: 8px;
  font-size: 15px;
}

/* ===== 按钮系统 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  line-height: 1;
  border: 1.5px solid transparent;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px);
}

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

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

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

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

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

.btn-cta:hover {
  background: var(--cta-dark);
}

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

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

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

.btn-white:hover {
  background: #f0f0f0;
}

.btn-sm {
  padding: 9px 20px;
  font-size: 14px;
}

.btn-lg {
  padding: 15px 36px;
  font-size: 16px;
}

/* ===== 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-header);
  height: 64px;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 20px;
}

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

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
}

.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  letter-spacing: -0.01em;
}

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

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

.nav-link {
  font-size: 15px;
  color: var(--text);
  font-weight: 500;
  padding: 6px 2px;
  position: relative;
  transition: color 0.2s;
}

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

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

.nav-link.active::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.nav-tools {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.search-box {
  position: relative;
  width: 200px;
}

.search-box input {
  width: 100%;
  height: 38px;
  background: #F5F5F2;
  border-radius: var(--radius-sm);
  padding: 0 38px 0 14px;
  font-size: 13px;
  color: var(--text);
  border: 1.5px solid transparent;
  transition: all 0.2s;
}

.search-box input::placeholder {
  color: var(--text-sub);
}

.search-box input:focus {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(15, 157, 143, 0.12);
}

.search-icon {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 15px;
  height: 15px;
  color: var(--text-sub);
  pointer-events: none;
}

.nav-toggle {
  display: none;
  padding: 6px;
  cursor: pointer;
  color: var(--text);
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.85);
  padding: 56px 0 0;
}

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

.footer-brand .nav-logo {
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.7);
  max-width: 320px;
}

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

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

.footer-column ul a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.2s;
}

.footer-column ul a:hover {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-contact p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 8px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 20px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
}

/* ===== 页面头部条 ===== */
.page-hero {
  position: relative;
  background: linear-gradient(135deg, var(--dark) 0%, var(--primary-dark) 100%);
  padding: 80px 0 72px;
  color: #fff;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.3;
}

.page-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 30%, rgba(15, 157, 143, 0.2) 0%, transparent 60%);
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.breadcrumb {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 16px;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.2s;
}

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

.breadcrumb span {
  margin: 0 8px;
  color: rgba(255, 255, 255, 0.4);
}

.page-hero h1 {
  font-size: 40px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.page-hero h1 span {
  color: var(--primary);
}

.page-hero .hero-sub {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
  max-width: 620px;
  margin-bottom: 28px;
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 20px;
  backdrop-filter: blur(4px);
}

/* ===== 图文内容区 ===== */
.feature-split {
  background: var(--bg);
}

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

.feature-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.feature-media img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

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

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

.feature-content h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin: 24px 0 14px;
}

.feature-list {
  margin-bottom: 24px;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 0;
  color: var(--text);
  font-size: 15px;
}

.feature-list li::before {
  content: '';
  width: 20px;
  height: 20px;
  background: var(--primary-light);
  border-radius: 50%;
  border: 1.5px solid var(--primary);
  position: relative;
  flex-shrink: 0;
}

.feature-list li::after {
  content: '✓';
  position: absolute;
  margin-left: 5px;
  width: 14px;
  height: 14px;
  color: var(--primary);
  font-size: 11px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ===== 会员等级卡片 ===== */
.tiers-section {
  background: #fff;
}

.tier-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.tier-card {
  position: relative;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  box-shadow: var(--shadow-card);
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
}

.tier-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-light);
}

.tier-card.featured {
  background: var(--primary-light);
  border: 1.5px solid var(--primary);
  transform: scale(1.02);
  box-shadow: var(--shadow-hover);
}

.tier-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--cta);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 16px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

.tier-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
  text-align: center;
}

.tier-price {
  font-family: var(--font-num);
  font-size: 36px;
  font-weight: 700;
  color: var(--cta);
  text-align: center;
  margin-bottom: 24px;
}

.tier-price span {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-sub);
}

.tier-list {
  flex: 1;
  margin-bottom: 28px;
}

.tier-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  color: var(--text);
  font-size: 14px;
  border-bottom: 1px dashed var(--border);
}

.tier-list li:last-child {
  border-bottom: none;
}

.tier-list li.on::before {
  content: '✓';
  color: var(--success);
  font-weight: 700;
  font-size: 14px;
  width: 20px;
  height: 20px;
  background: rgba(22, 163, 74, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.tier-list li.off::before {
  content: '×';
  color: #bbb;
  font-weight: 700;
  font-size: 13px;
  width: 20px;
  height: 20px;
  background: #f0f0f0;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

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

/* ===== 限时优惠横幅 ===== */
.promo-banner {
  background: linear-gradient(135deg, var(--cta) 0%, var(--warning) 100%);
  padding: 64px 0;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.promo-banner::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
}

.promo-banner::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: 10%;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
}

.promo-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.promo-copy h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.promo-copy p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.9);
}

.promo-countdown {
  display: flex;
  align-items: center;
  gap: 12px;
}

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

.countdown-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 64px;
  height: 64px;
  background: rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-lg);
  font-family: var(--font-num);
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  backdrop-filter: blur(4px);
  animation: breathe 2s ease-in-out infinite;
}

.countdown-label {
  display: block;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.8);
  margin-top: 6px;
  letter-spacing: 0.05em;
}

.countdown-sep {
  font-size: 24px;
  color: rgba(255, 255, 255, 0.5);
  font-weight: 300;
}

@keyframes breathe {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.75; }
}

/* ===== 延伸阅读 ===== */
.related-section {
  background: var(--bg);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.related-card {
  display: flex;
  gap: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-card);
  transition: all 0.25s ease;
  align-items: center;
}

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

.related-card img {
  width: 140px;
  height: 100px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.related-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

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

/* ===== FAQ ===== */
.faq-section {
  background: #fff;
}

.faq-list {
  max-width: 800px;
  margin: 40px auto 0;
}

.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color 0.2s;
}

.faq-item.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(15, 157, 143, 0.08);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 24px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  background: none;
  text-align: left;
  transition: color 0.2s;
}

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

.faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 400;
  flex-shrink: 0;
  transition: transform 0.3s;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 24px;
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.8;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 24px 18px;
}

/* ===== 底部 CTA ===== */
.cta-section {
  padding: 56px 0;
  background: var(--bg);
}

.cta-banner {
  background: linear-gradient(135deg, var(--dark) 0%, var(--primary-dark) 100%);
  border-radius: var(--radius-lg);
  padding: 48px 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  color: #fff;
  position: relative;
  overflow: hidden;
  flex-wrap: wrap;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle at center, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
}

.cta-banner h2 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 8px;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 15px;
  max-width: 480px;
}

.cta-banner .btn {
  flex-shrink: 0;
  z-index: 1;
}

/* ===== 响应式 ===== */
@media (max-width: 991px) {
  .main-nav {
    gap: 18px;
  }
  .search-box {
    width: 150px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .tier-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .tier-card.featured {
    order: -1;
  }
  .promo-inner {
    flex-direction: column;
    text-align: center;
  }
  .feature-grid {
    gap: 32px;
  }
}

@media (max-width: 767px) {
  .section {
    padding: var(--space-section-mobile) 0;
  }
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .site-header {
    height: 56px;
  }
  .header-inner {
    height: 56px;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 20px 24px;
    gap: 6px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-hover);
  }
  .site-header.nav-open .main-nav {
    display: flex;
  }
  .nav-link {
    padding: 12px 0;
    width: 100%;
    display: block;
    border-bottom: 1px solid var(--border);
  }
  .nav-link.active::after {
    display: none;
  }
  .nav-tools {
    gap: 8px;
  }
  .search-box {
    display: none;
  }
  .nav-toggle {
    display: block;
  }
  .btn-sm {
    padding: 8px 16px;
    font-size: 13px;
  }
  .page-hero {
    padding: 48px 0 40px;
  }
  .page-hero h1 {
    font-size: 30px;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .feature-media img {
    height: 220px;
  }
  .tier-grid {
    grid-template-columns: 1fr;
  }
  .tier-card.featured {
    transform: none;
    order: 0;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .related-card {
    flex-direction: column;
    text-align: center;
  }
  .related-card img {
    width: 100%;
    height: 160px;
  }
  .countdown-num {
    min-width: 50px;
    height: 54px;
    font-size: 26px;
  }
  .cta-banner {
    padding: 32px 24px;
    flex-direction: column;
    text-align: center;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .faq-question {
    padding: 16px 20px;
  }
  .promo-banner {
    padding: 48px 0;
  }
}

@media (min-width: 992px) {
  .main-nav {
    display: flex !important;
  }
}

@media (max-width: 520px) {
  .countdown-item {
    gap: 4px;
  }
  .countdown-num {
    min-width: 44px;
    height: 48px;
    font-size: 22px;
    border-radius: var(--radius-md);
  }
  .countdown-sep {
    font-size: 18px;
  }
  .promo-copy h2 {
    font-size: 26px;
  }
  .page-hero .hero-actions .btn {
    width: 100%;
  }
}