/* roulang page: index */
:root {
  --primary: #1E5AA8;
  --primary-hover: #14438A;
  --primary-light: #E0EDFF;
  --accent: #14B8A6;
  --accent-hover: #0D9488;
  --accent-light: #E6FAF6;
  --dark: #0F2A4A;
  --heading: #10233F;
  --body: #334155;
  --muted: #64748B;
  --bg: #FAFCFF;
  --bg-alt: #F5F9FC;
  --white: #FFFFFF;
  --border: #E2E8F0;
  --border-light: #CBD5E1;
  --error: #EF4444;
  --success: #10B981;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --shadow: 0 4px 16px rgba(30,90,168,0.08);
  --shadow-hover: 0 12px 28px rgba(30,90,168,0.14);
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --transition: all 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-feature-settings: "tnum";
  background: var(--bg);
  color: var(--body);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul, ol {
  list-style: none;
}

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

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

.section {
  padding: 96px 0;
}

.section-title {
  font-size: 32px;
  font-weight: 600;
  color: var(--heading);
  line-height: 1.3;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.section-subtitle {
  font-size: 15px;
  color: var(--muted);
  margin-bottom: 40px;
  line-height: 1.7;
}

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

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

.section-header .section-title::after {
  content: "";
  display: block;
  width: 48px;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
  margin: 16px auto 0;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  line-height: 1.2;
  border: 1.5px solid transparent;
}

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

.btn-primary:hover {
  background: var(--primary-hover);
  color: var(--white);
  box-shadow: 0 0 0 2px rgba(20,59,138,0.2);
}

.btn-primary:active {
  transform: translateY(1px);
}

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

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

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

.btn-outline:hover {
  background: #EFF6FF;
  color: var(--primary);
}

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

.btn-outline-light:hover {
  background: rgba(255,255,255,0.1);
  color: var(--white);
}

.btn-sm {
  min-height: 38px;
  padding: 0 20px;
  font-size: 14px;
}

.btn-lg {
  min-height: 48px;
  padding: 0 40px;
  font-size: 16px;
}

.btn-block {
  width: 100%;
}

.btn.disabled {
  opacity: 0.6;
  pointer-events: none;
}

/* ===== 标签 ===== */
.tag {
  display: inline-block;
  padding: 4px 16px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 500;
  background: var(--accent-light);
  color: #0F766E;
  line-height: 1.6;
}

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

/* ===== 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(15,42,74,0.04);
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(15,42,74,0.08);
}

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

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

.logo svg {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--heading);
  white-space: nowrap;
  letter-spacing: -0.3px;
}

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

.main-nav a {
  font-size: 15px;
  color: var(--body);
  font-weight: 500;
  padding: 6px 2px;
  position: relative;
  transition: var(--transition);
}

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

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

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

.nav-cta {
  margin-left: 20px;
}

.hamburger {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--bg-alt);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid var(--border);
}

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

.hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--heading);
  border-radius: 2px;
  position: relative;
  transition: var(--transition);
}

.hamburger span::before,
.hamburger span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--heading);
  border-radius: 2px;
  transition: var(--transition);
}

.hamburger span::before {
  top: -6px;
}

.hamburger span::after {
  top: 6px;
}

.hamburger.active span {
  background: transparent;
}

.hamburger.active span::before {
  top: 0;
  transform: rotate(45deg);
}

.hamburger.active span::after {
  top: 0;
  transform: rotate(-45deg);
}

/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, #F0F6FF 0%, #FFFFFF 60%);
  padding: 100px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -60px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: rgba(224,237,255,0.5);
  z-index: 0;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -60px;
  left: -40px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(230,250,246,0.5);
  z-index: 0;
}

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

.hero-title {
  font-size: 44px;
  font-weight: 700;
  color: var(--heading);
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.hero-sub {
  font-size: 16px;
  color: var(--muted);
  margin-bottom: 36px;
  max-width: 520px;
  line-height: 1.8;
}

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

.hero-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-hover);
  max-width: 480px;
  margin-left: auto;
}

.hero-image img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

.hero-decoration {
  position: absolute;
  right: 60px;
  bottom: 30px;
  width: 80px;
  height: 80px;
  opacity: 0.15;
  z-index: 0;
}

/* ===== 数据导览条 ===== */
.stats-bar {
  background: var(--white);
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
}

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

.stat-card {
  text-align: center;
  padding: 28px 16px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.stat-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.stat-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 14px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  background: var(--accent-light);
  color: var(--accent);
}

.stat-icon.blue {
  background: var(--primary-light);
  color: var(--primary);
}

.stat-value {
  font-size: 22px;
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 13px;
  color: var(--muted);
}

/* ===== 议程时间线 ===== */
.agenda-section {
  background: var(--bg-alt);
}

.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: 40px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--border));
}

.timeline-item {
  position: relative;
  margin-bottom: 32px;
}

.timeline-dot {
  position: absolute;
  left: -34px;
  top: 28px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--white);
  box-shadow: 0 0 0 3px rgba(20,184,166,0.2);
}

.timeline-time {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 6px;
  display: inline-block;
  background: var(--primary-light);
  padding: 2px 12px;
  border-radius: var(--radius-pill);
}

.timeline-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.timeline-card:hover {
  box-shadow: var(--shadow-hover);
}

.timeline-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--heading);
  margin-bottom: 6px;
}

.timeline-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
}

.agenda-bottom {
  text-align: center;
  margin-top: 40px;
}

/* ===== 嘉宾亮点 ===== */
.speakers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.speaker-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

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

.speaker-avatar {
  width: 84px;
  height: 84px;
  border-radius: 50%;
  overflow: hidden;
  margin: 0 auto 16px;
  border: 3px solid var(--primary-light);
  background: var(--bg-alt);
}

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

.speaker-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--heading);
  margin-bottom: 4px;
}

.speaker-role {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 12px;
}

.speaker-tags {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
}

.speaker-tags .tag {
  font-size: 12px;
  padding: 2px 12px;
}

/* ===== 票种对比 ===== */
.tickets-section {
  background: var(--bg);
}

.tickets-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  align-items: stretch;
}

.ticket-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

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

.ticket-card.featured {
  border: 2px solid var(--accent);
  box-shadow: 0 8px 24px rgba(20,184,166,0.15);
}

.ticket-ribbon {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: var(--white);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 20px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

.ticket-name {
  font-size: 20px;
  font-weight: 600;
  color: var(--heading);
  margin-bottom: 8px;
}

.ticket-price {
  font-size: 42px;
  font-weight: 700;
  color: var(--heading);
  line-height: 1.2;
  margin-bottom: 4px;
}

.ticket-price span {
  font-size: 16px;
  font-weight: 400;
  color: var(--muted);
}

.ticket-desc {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 24px;
}

.ticket-features {
  text-align: left;
  margin-bottom: 28px;
  flex: 1;
}

.ticket-features li {
  padding: 8px 0;
  font-size: 14px;
  color: var(--body);
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid #F1F5F9;
}

.ticket-features li:last-child {
  border-bottom: none;
}

.ticket-features i {
  color: var(--accent);
  font-size: 14px;
  flex-shrink: 0;
}

.ticket-card.featured .btn {
  background: var(--accent);
}

.ticket-card.featured .btn:hover {
  background: var(--accent-hover);
}

/* ===== 报名CTA ===== */
.register-section {
  background: var(--dark);
  color: var(--white);
  padding: 80px 0;
}

.register-section .section-title {
  color: var(--white);
}

.register-section .section-subtitle {
  color: rgba(255,255,255,0.7);
}

.register-form-wrap {
  background: var(--white);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.15);
  max-width: 520px;
  margin: 0 auto;
}

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

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

.form-control {
  width: 100%;
  height: 44px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 0 16px;
  font-size: 15px;
  color: var(--heading);
  background: var(--white);
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(30,90,168,0.2);
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%2364748B' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form-tip {
  font-size: 13px;
  color: var(--muted);
  margin-top: 4px;
}

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

.form-success {
  font-size: 14px;
  color: var(--success);
  padding: 12px 16px;
  background: #ECFDF5;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  display: none;
}

.register-form-wrap.submitted .form-error {
  display: block;
}

.register-form-wrap.success .form-success {
  display: block;
}

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

.news-list {
  max-width: 900px;
  margin: 0 auto;
}

.news-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  margin-bottom: 24px;
  display: flex;
}

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

.news-thumb {
  flex: 0 0 240px;
  position: relative;
  overflow: hidden;
}

.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 160px;
}

.news-content {
  flex: 1;
  padding: 24px;
  display: flex;
  flex-direction: column;
}

.news-content h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--heading);
  margin-bottom: 8px;
  line-height: 1.4;
  transition: var(--transition);
}

.news-card:hover .news-content h3 {
  color: var(--primary);
}

.news-content p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 12px;
  flex: 1;
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--muted);
}

.news-meta .tag {
  font-size: 12px;
}

.news-empty {
  text-align: center;
  padding: 60px 20px;
  background: var(--white);
  border-radius: var(--radius);
  border: 1px dashed var(--border-light);
  color: var(--muted);
  font-size: 15px;
}

.news-bottom {
  text-align: center;
  margin-top: 32px;
}

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

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

.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  box-shadow: 0 2px 8px rgba(15,42,74,0.03);
  transition: var(--transition);
  overflow: hidden;
}

.faq-item:hover {
  box-shadow: var(--shadow);
}

.faq-item.active {
  border-left: 3px solid var(--primary);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 500;
  color: var(--heading);
  cursor: pointer;
  background: transparent;
  width: 100%;
  text-align: left;
  transition: var(--transition);
  line-height: 1.5;
}

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

.faq-question i {
  font-size: 14px;
  color: var(--muted);
  transition: transform 0.2s ease;
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
}

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

.faq-item.active .faq-answer {
  max-height: 400px;
  padding-bottom: 20px;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--dark);
  color: #94A3B8;
  padding: 64px 0 0;
}

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

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-logo svg {
  width: 32px;
  height: 32px;
}

.footer-logo .logo-text {
  color: var(--white);
}

.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  max-width: 360px;
  color: rgba(255,255,255,0.6);
}

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

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

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

.footer-links a:hover {
  color: #7DD3FC;
}

.footer-contact li {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-contact i {
  color: var(--accent);
  font-size: 14px;
  width: 16px;
  text-align: center;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .section {
    padding: 72px 0;
  }

  .hero-title {
    font-size: 36px;
  }

  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    box-shadow: 0 8px 24px rgba(15,42,74,0.08);
    z-index: 999;
  }

  .main-nav.open {
    max-height: 400px;
  }

  .main-nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 16px 0;
  }

  .main-nav li {
    width: 100%;
  }

  .main-nav a {
    display: block;
    font-size: 18px;
    padding: 14px 0;
    border-bottom: 1px solid #F1F5F9;
  }

  .main-nav a.active::after {
    display: none;
  }

  .nav-cta {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .hero {
    padding: 60px 0 48px;
  }

  .hero-image {
    margin: 40px 0 0;
    max-width: 100%;
  }

  .hero-image img {
    height: 220px;
  }

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

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

  .tickets-grid {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin: 0 auto;
  }

  .news-card {
    flex-direction: column;
  }

  .news-thumb {
    flex: none;
    width: 100%;
  }

  .news-thumb img {
    height: 180px;
  }

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

  .register-form-wrap {
    padding: 28px 20px;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 16px;
  }

  .section {
    padding: 48px 0;
  }

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

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

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

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

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

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

  .stat-value {
    font-size: 18px;
  }

  .timeline {
    padding-left: 32px;
  }

  .timeline-dot {
    left: -28px;
  }

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

  .ticket-card {
    padding: 28px 20px;
  }

  .register-form-wrap {
    padding: 24px 16px;
  }

  .footer-grid {
    gap: 24px;
  }

  .logo-text {
    font-size: 17px;
  }

  .hero-sub {
    font-size: 14px;
  }
}

@media (min-width: 901px) {
  .main-nav {
    display: flex !important;
    position: static;
    max-height: none;
    box-shadow: none;
    padding: 0;
    border: none;
  }

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

/* ===== 动画 ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease both;
}

/* ===== 备用样式 ===== */
.hero-watermark {
  position: absolute;
  right: 80px;
  bottom: 20px;
  font-size: 100px;
  font-weight: 700;
  color: rgba(30,90,168,0.03);
  z-index: 0;
  pointer-events: none;
}

/* roulang page: category1 */
:root {
      --primary: #1E5AA8;
      --primary-dark: #14438A;
      --accent: #14B8A6;
      --accent-dark: #0D9488;
      --bg: #FAFCFF;
      --bg-alt: #F5F9FC;
      --bg-dark: #0F2A4A;
      --text: #334155;
      --text-strong: #10233F;
      --text-weak: #64748B;
      --border: #E2E8F0;
      --radius: 12px;
      --radius-sm: 8px;
      --shadow: 0 4px 16px rgba(30, 90, 168, 0.08);
      --shadow-hover: 0 12px 28px rgba(30, 90, 168, 0.14);
      --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
    }

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

    body {
      font-family: var(--font);
      font-size: 15px;
      line-height: 1.8;
      color: var(--text);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
      font-feature-settings: "tnum";
    }

    a {
      text-decoration: none;
      color: var(--primary);
      transition: color .2s ease;
    }

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

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

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

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

    @media (max-width: 640px) {
      .container {
        padding-left: 16px;
        padding-right: 16px;
      }
    }

    /* ===== Header ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      height: 64px;
      background: #FFFFFF;
      border-bottom: 1px solid var(--border);
      box-shadow: 0 1px 8px rgba(30, 90, 168, 0.04);
    }

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

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

    .logo svg {
      width: 32px;
      height: 32px;
    }

    .logo-text {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-strong);
      letter-spacing: .5px;
      white-space: nowrap;
    }

    .main-nav ul {
      list-style: none;
      display: flex;
      align-items: center;
      gap: 32px;
      margin: 0;
    }

    .main-nav ul li a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text);
      padding: 6px 2px;
      position: relative;
      transition: color .2s ease;
    }

    .main-nav ul li a:hover {
      color: var(--primary);
    }

    .main-nav ul li a.active {
      color: var(--primary);
      font-weight: 600;
    }

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

    .header-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 40px;
      padding: 0 22px;
      background: var(--primary);
      color: #fff;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      transition: background .2s ease, box-shadow .2s ease, transform .1s ease;
      flex-shrink: 0;
    }

    .header-cta:hover {
      background: var(--primary-dark);
      color: #fff;
      box-shadow: 0 0 0 2px rgba(20, 59, 138, 0.2);
    }

    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
      flex-shrink: 0;
    }

    .hamburger span {
      width: 24px;
      height: 2px;
      background: var(--text-strong);
      border-radius: 2px;
      transition: transform .3s ease, opacity .3s ease;
    }

    .hamburger.active span:nth-child(1) {
      transform: rotate(45deg) translate(5px, 5px);
    }

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

    .hamburger.active span:nth-child(3) {
      transform: rotate(-45deg) translate(5px, -5px);
    }

    @media (max-width: 900px) {
      .main-nav {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: #fff;
        border-bottom: 1px solid var(--border);
        padding: 8px 24px 20px;
        transform: translateY(-16px);
        opacity: 0;
        visibility: hidden;
        transition: opacity .3s ease, transform .3s ease, visibility .3s;
        box-shadow: 0 16px 24px rgba(30, 90, 168, 0.08);
      }

      .main-nav.open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
      }

      .main-nav ul {
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
      }

      .main-nav ul li {
        width: 100%;
      }

      .main-nav ul li a {
        display: block;
        font-size: 18px;
        line-height: 56px;
        color: var(--text-strong);
        border-bottom: 1px solid var(--bg-alt);
      }

      .main-nav ul li a.active {
        color: var(--primary);
      }

      .main-nav ul li a.active::after {
        display: none;
      }

      .header-cta {
        font-size: 13px;
        height: 36px;
        padding: 0 16px;
      }

      .hamburger {
        display: flex;
      }
    }

    /* ===== Hero ===== */
    .hero-section {
      position: relative;
      background: #F0F6FF;
      padding: 88px 0 80px;
      overflow: hidden;
      border-bottom: 1px solid var(--border);
    }

    .hero-section::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(110deg, rgba(240, 246, 255, 0.98) 0%, rgba(255, 255, 255, 0.92) 55%, rgba(255, 255, 255, 0.72) 100%);
      z-index: 1;
    }

    .hero-bg {
      position: absolute;
      inset: 0;
      background: url('/assets/images/backpic/back-1.webp') no-repeat center center / cover;
      z-index: 0;
    }

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

    .hero-breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: var(--text-weak);
      margin-bottom: 24px;
    }

    .hero-breadcrumb a {
      color: var(--text-weak);
    }

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

    .hero-breadcrumb span {
      color: var(--primary);
      font-weight: 500;
    }

    .hero-title {
      font-size: 44px;
      line-height: 1.2;
      font-weight: 700;
      color: var(--text-strong);
      margin-bottom: 20px;
      letter-spacing: 1px;
    }

    .hero-subtitle {
      font-size: 17px;
      color: var(--text);
      margin-bottom: 36px;
      max-width: 520px;
      line-height: 1.7;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 44px;
      padding: 0 28px;
      border-radius: var(--radius-sm);
      font-size: 15px;
      font-weight: 600;
      border: none;
      cursor: pointer;
      transition: background .2s ease, box-shadow .2s ease, transform .1s ease;
    }

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

    .btn-primary:hover {
      background: var(--primary-dark);
      color: #fff;
      box-shadow: 0 0 0 2px rgba(20, 59, 138, 0.2);
    }

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

    .btn-outline:hover {
      background: #EFF6FF;
      color: var(--primary-dark);
    }

    .btn:active {
      transform: translateY(1px);
    }

    .hero-deco {
      position: absolute;
      bottom: -40px;
      right: -30px;
      width: 320px;
      height: 320px;
      border-radius: 50%;
      background: #E6FAF6;
      opacity: .6;
      z-index: 1;
      pointer-events: none;
    }

    .hero-deco-two {
      position: absolute;
      top: 40px;
      right: 140px;
      width: 120px;
      height: 120px;
      border-radius: 50%;
      background: #E0EDFF;
      opacity: .5;
      z-index: 1;
      pointer-events: none;
    }

    @media (max-width: 900px) {
      .hero-section {
        padding: 64px 0 56px;
      }

      .hero-title {
        font-size: 36px;
      }
    }

    @media (max-width: 640px) {
      .hero-section {
        padding: 48px 0 40px;
      }

      .hero-title {
        font-size: 30px;
      }

      .hero-subtitle {
        font-size: 15px;
      }

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

    /* ===== Stats ===== */
    .stats-section {
      background: #fff;
      padding: 48px 0;
      border-bottom: 1px solid var(--border);
    }

    .stats-card {
      text-align: center;
      padding: 28px 20px 22px;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      background: #fff;
      transition: transform .25s ease, box-shadow .25s ease;
      margin-bottom: 16px;
    }

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

    .stats-icon {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: #EFF6FF;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 14px;
      font-size: 20px;
      color: var(--primary);
    }

    .stats-number {
      font-size: 32px;
      font-weight: 700;
      color: var(--text-strong);
      line-height: 1.2;
      margin-bottom: 4px;
    }

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

    /* ===== Process ===== */
    .process-section {
      background: var(--bg-alt);
      padding: 88px 0;
    }

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

    .section-tag {
      display: inline-block;
      padding: 4px 16px;
      background: #E6FAF6;
      color: #0F766E;
      font-size: 13px;
      font-weight: 500;
      border-radius: 999px;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 30px;
      font-weight: 700;
      color: var(--text-strong);
      line-height: 1.3;
      margin-bottom: 12px;
    }

    .section-desc {
      font-size: 15px;
      color: var(--text-weak);
      max-width: 560px;
      margin: 0 auto;
    }

    .process-grid {
      display: flex;
      flex-direction: column;
      gap: 28px;
    }

    .process-card {
      display: flex;
      align-items: center;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      overflow: hidden;
      transition: transform .25s ease, box-shadow .25s ease;
      flex-wrap: wrap;
    }

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

    .process-card:nth-child(even) {
      flex-direction: row-reverse;
    }

    .process-img {
      width: 280px;
      flex-shrink: 0;
      height: 180px;
      overflow: hidden;
      background: var(--bg-alt);
    }

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

    .process-content {
      flex: 1;
      padding: 28px 32px;
      min-width: 260px;
    }

    .process-tag {
      display: inline-block;
      padding: 3px 12px;
      background: #EFF6FF;
      color: var(--primary);
      font-size: 12px;
      font-weight: 500;
      border-radius: 999px;
      margin-bottom: 12px;
    }

    .process-content h3 {
      font-size: 20px;
      font-weight: 600;
      color: var(--text-strong);
      margin-bottom: 10px;
      line-height: 1.4;
    }

    .process-content p {
      font-size: 14px;
      color: var(--text);
      line-height: 1.7;
      margin-bottom: 12px;
    }

    .process-link {
      font-size: 13px;
      font-weight: 500;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .process-link i {
      font-size: 12px;
      transition: transform .2s ease;
    }

    .process-link:hover i {
      transform: translateX(3px);
    }

    @media (max-width: 900px) {
      .process-card {
        flex-direction: row;
      }

      .process-card:nth-child(even) {
        flex-direction: row;
      }

      .process-img {
        width: 200px;
        height: 150px;
      }
    }

    @media (max-width: 640px) {
      .process-card,
      .process-card:nth-child(even) {
        flex-direction: column;
      }

      .process-img {
        width: 100%;
        height: auto;
        aspect-ratio: 16 / 9;
      }

      .process-content {
        padding: 20px;
      }

      .section-title {
        font-size: 24px;
      }
    }

    /* ===== Materials ===== */
    .materials-section {
      background: #fff;
      padding: 88px 0;
    }

    .materials-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 28px;
      margin-top: 8px;
    }

    .material-card {
      background: var(--bg-alt);
      border: 1px solid transparent;
      border-radius: var(--radius);
      padding: 28px 24px;
      text-align: center;
      transition: background .25s ease, transform .25s ease, border-color .25s ease;
    }

    .material-card:hover {
      background: #fff;
      border-color: var(--border);
      transform: translateY(-4px);
      box-shadow: var(--shadow);
    }

    .material-icon {
      width: 60px;
      height: 60px;
      border-radius: 50%;
      background: #EFF6FF;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
      font-size: 22px;
      color: var(--primary);
    }

    .material-card h3 {
      font-size: 16px;
      font-weight: 600;
      color: var(--text-strong);
      margin-bottom: 8px;
    }

    .material-card p {
      font-size: 14px;
      color: var(--text-weak);
      line-height: 1.6;
    }

    @media (max-width: 900px) {
      .materials-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

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

    /* ===== FAQ ===== */
    .faq-section {
      background: var(--bg-alt);
      padding: 88px 0;
    }

    .faq-accordion {
      max-width: 760px;
      margin: 0 auto;
      list-style: none;
    }

    .faq-accordion .accordion-item {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      box-shadow: 0 2px 8px rgba(30, 90, 168, 0.04);
      margin-bottom: 16px;
      overflow: hidden;
      transition: box-shadow .25s ease;
    }

    .faq-accordion .accordion-item.is-active {
      border-left: 3px solid var(--primary);
      box-shadow: var(--shadow);
    }

    .faq-accordion .accordion-title {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-strong);
      background: #fff;
      border-bottom: 1px solid transparent;
      transition: color .2s ease;
    }

    .faq-accordion .accordion-item.is-active .accordion-title {
      border-bottom: 1px solid var(--border);
      color: var(--primary);
    }

    .faq-accordion .accordion-title::after {
      content: "\f078";
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      font-size: 14px;
      color: var(--text-weak);
      transition: transform .2s ease;
      margin-left: 12px;
    }

    .faq-accordion .accordion-item.is-active .accordion-title::after {
      transform: rotate(180deg);
      color: var(--primary);
    }

    .faq-accordion .accordion-content {
      padding: 18px 24px 22px;
      font-size: 14px;
      color: var(--text);
      line-height: 1.8;
      background: #fff;
    }

    .faq-note {
      text-align: center;
      margin-top: 32px;
      font-size: 14px;
      color: var(--text-weak);
    }

    .faq-note a {
      color: var(--primary);
      font-weight: 500;
    }

    /* ===== CTA ===== */
    .cta-section {
      background: var(--bg-dark);
      color: #fff;
      text-align: center;
      padding: 72px 0;
    }

    .cta-title {
      font-size: 32px;
      font-weight: 700;
      margin-bottom: 12px;
      line-height: 1.3;
      color: #fff;
    }

    .cta-desc {
      font-size: 16px;
      color: #94A3B8;
      margin-bottom: 32px;
    }

    .cta-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 48px;
      padding: 0 36px;
      background: var(--accent);
      color: #fff;
      font-size: 16px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      transition: background .2s ease, box-shadow .2s ease;
    }

    .cta-btn:hover {
      background: var(--accent-dark);
      color: #fff;
      box-shadow: 0 0 0 2px rgba(13, 148, 136, 0.3);
    }

    @media (max-width: 640px) {
      .cta-title {
        font-size: 26px;
      }

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

    /* ===== Footer ===== */
    .site-footer {
      background: var(--bg-dark);
      color: #94A3B8;
      padding: 56px 0 24px;
    }

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

    .footer-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 16px;
    }

    .footer-logo svg {
      width: 36px;
      height: 36px;
    }

    .footer-logo .logo-text {
      font-size: 20px;
      font-weight: 700;
      color: #fff;
    }

    .footer-desc {
      font-size: 14px;
      line-height: 1.8;
      color: #94A3B8;
      max-width: 320px;
    }

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

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

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

    .footer-links a {
      color: #94A3B8;
      transition: color .2s ease;
    }

    .footer-links a:hover {
      color: #7DD3FC;
    }

    .footer-contact i {
      width: 20px;
      color: var(--accent);
      margin-right: 6px;
    }

    .footer-bottom {
      border-top: 1px solid rgba(148, 163, 184, 0.2);
      padding-top: 20px;
      text-align: center;
      font-size: 13px;
      color: #94A3B8;
    }

    @media (max-width: 900px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
      }

      .footer-col:first-child {
        grid-column: 1 / -1;
      }
    }

    @media (max-width: 520px) {
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }

      .footer-col:first-child {
        grid-column: auto;
      }
    }

/* roulang page: article */
:root {
  --primary: #1E5AA8;
  --primary-hover: #14438A;
  --primary-soft: #EFF6FF;
  --accent: #14B8A6;
  --accent-hover: #0D9488;
  --dark: #0F2A4A;
  --heading: #10233F;
  --text: #334155;
  --muted: #64748B;
  --border: #E2E8F0;
  --bg: #FAFCFF;
  --bg-alt: #F5F9FC;
  --white: #FFFFFF;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 16px rgba(30, 90, 168, 0.08);
  --shadow-lg: 0 12px 28px rgba(30, 90, 168, 0.14);
  --transition: 0.25s ease;
  --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-main);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "tnum" on, "lnum" on;
}
img { max-width: 100%; display: block; height: auto; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition), background var(--transition), box-shadow var(--transition), transform var(--transition); }
a:hover, a:focus { color: var(--primary-hover); outline: none; }
h1, h2, h3, h4, h5, h6 { color: var(--heading); line-height: 1.3; margin: 0 0 16px; font-weight: 600; }
p { margin: 0 0 16px; }
ul, ol { margin: 0 0 16px; }
button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  gap: 8px;
  line-height: 1.2;
  text-align: center;
  white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover, .btn-primary:focus { background: var(--primary-hover); color: #fff; box-shadow: 0 0 0 3px rgba(20, 67, 138, 0.2); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover, .btn-accent:focus { background: var(--accent-hover); color: #fff; }
.btn-outline { background: transparent; border-color: var(--primary); color: var(--primary); }
.btn-outline:hover, .btn-outline:focus { background: var(--primary-soft); color: var(--primary); border-color: var(--primary); }
.btn-sm { min-height: 40px; padding: 0 22px; font-size: 14px; }
.btn-lg { min-height: 52px; padding: 0 40px; font-size: 16px; }
.btn-block { width: 100%; }
.btn:active { transform: translateY(1px); }
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--border);
}
.site-header.scrolled { box-shadow: 0 4px 16px rgba(15, 42, 74, 0.08); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 24px; }
.logo-link { display: inline-flex; align-items: center; gap: 10px; }
.logo-link svg { width: 32px; height: 32px; flex: 0 0 auto; }
.logo-text { font-size: 20px; font-weight: 700; color: var(--heading); letter-spacing: 0.01em; white-space: nowrap; }
.main-nav ul { display: flex; align-items: center; gap: 32px; list-style: none; margin: 0; padding: 0; }
.main-nav a { position: relative; color: var(--text); font-size: 15px; font-weight: 500; padding: 8px 2px; display: inline-block; }
.main-nav a:hover, .main-nav a:focus { color: var(--primary); }
.main-nav a.active { color: var(--primary); font-weight: 600; }
.main-nav a.active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.header-cta { margin-left: 8px; }
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  border-radius: 8px;
}
.menu-toggle span { display: block; height: 2px; width: 24px; background: var(--heading); border-radius: 2px; transition: all 0.25s; }
.menu-toggle:hover span { background: var(--primary); }
.menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.breadcrumb-bar { background: var(--bg-alt); border-bottom: 1px solid var(--border); padding: 14px 0; }
.breadcrumb { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 14px; color: var(--muted); }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb-sep { color: #CBD5E1; }
.breadcrumb .current { color: var(--heading); font-weight: 500; max-width: 420px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.article-section { padding: 72px 0; background: var(--white); }
.article-wrap { max-width: 760px; margin: 0 auto; }
.article-kicker { display: inline-block; color: var(--accent); font-size: 14px; font-weight: 600; letter-spacing: 0.06em; margin-bottom: 12px; }
.article-title { font-size: clamp(28px, 4vw, 38px); line-height: 1.25; margin-bottom: 16px; }
.article-lede { font-size: 17px; color: var(--muted); line-height: 1.7; margin-bottom: 24px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 20px; color: var(--muted); font-size: 14px; padding-bottom: 24px; border-bottom: 1px solid var(--border); margin-bottom: 28px; }
.meta-item { display: inline-flex; align-items: center; gap: 6px; }
.meta-item i { color: var(--accent); width: 16px; }
.article-share { display: flex; align-items: center; gap: 10px; margin-bottom: 28px; font-size: 14px; color: var(--muted); }
.share-btn { display: inline-flex; align-items: center; justify-content: center; width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--border); color: var(--muted); font-size: 14px; background: var(--white); transition: all var(--transition); }
.share-btn:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-soft); }
.article-content { font-size: 16px; line-height: 1.8; color: var(--text); }
.article-content h2 { font-size: 26px; margin: 36px 0 18px; padding-left: 14px; border-left: 4px solid var(--primary); }
.article-content h3 { font-size: 20px; margin: 28px 0 14px; color: var(--heading); }
.article-content p { margin: 0 0 24px; }
.article-content ul, .article-content ol { margin: 0 0 24px; padding-left: 24px; }
.article-content li { margin-bottom: 8px; }
.article-content blockquote { margin: 28px 0; padding: 20px 24px; background: var(--bg-alt); border-left: 4px solid var(--accent); border-radius: 0 8px 8px 0; color: var(--heading); font-size: 17px; }
.article-content table { width: 100%; margin: 24px 0; border-collapse: collapse; background: var(--white); border-radius: 8px; overflow: hidden; }
.article-content th, .article-content td { border: 1px solid var(--border); padding: 12px 14px; text-align: left; }
.article-content th { background: var(--bg-alt); font-weight: 600; color: var(--heading); }
.article-content tr:nth-child(even) { background: var(--bg); }
.article-content img { border-radius: var(--radius); margin: 24px 0; box-shadow: var(--shadow); }
.article-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.article-content code { background: #F1F5F9; padding: 3px 8px; border-radius: 4px; font-size: 14px; color: var(--heading); }
.article-content pre { background: #10233F; color: #E2E8F0; padding: 20px 24px; border-radius: var(--radius); overflow-x: auto; margin: 24px 0; line-height: 1.6; }
.article-content pre code { background: transparent; color: inherit; padding: 0; }
.article-footer-nav { display: flex; gap: 16px; margin-top: 40px; padding-top: 28px; border-top: 1px solid var(--border); flex-wrap: wrap; }
.article-not-found { max-width: 760px; margin: 0 auto; text-align: center; padding: 48px 24px; }
.article-not-found h1 { font-size: 28px; }
.article-not-found p { color: var(--muted); margin-bottom: 24px; }

.related-section { padding: 72px 0 24px; background: var(--bg-alt); }
.section-head { text-align: center; margin-bottom: 40px; }
.section-head h2 { font-size: 30px; margin-bottom: 8px; }
.section-head p { color: var(--muted); font-size: 15px; }
.related-grid { margin-top: 8px; }
.related-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  height: 100%;
  transition: transform var(--transition), box-shadow var(--transition);
}
.related-card:hover, .related-card:focus {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  color: inherit;
}
.related-thumb { aspect-ratio: 16 / 9; overflow: hidden; }
.related-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.related-card:hover .related-thumb img { transform: scale(1.04); }
.related-body { padding: 20px; display: flex; flex-direction: column; flex: 1; }
.related-body h3 { font-size: 18px; margin-bottom: 8px; line-height: 1.4; }
.related-body p { font-size: 14px; color: var(--muted); margin-bottom: 16px; flex: 1; }
.related-meta { font-size: 13px; color: var(--muted); }

.faq-section { padding: 72px 0; background: var(--white); }
.faq-accordion { list-style: none; margin: 0 auto; max-width: 860px; }
.faq-accordion .accordion-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 16px;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.faq-accordion .accordion-item.is-active { border-color: var(--primary); box-shadow: var(--shadow-lg); }
.faq-accordion .accordion-title {
  display: block;
  position: relative;
  font-size: 16px;
  font-weight: 600;
  color: var(--heading);
  padding: 18px 48px 18px 20px;
  background: var(--white);
  border-bottom: 1px solid transparent;
  line-height: 1.5;
}
.faq-accordion .accordion-title:hover { color: var(--primary); background: var(--bg); }
.faq-accordion .accordion-item.is-active > .accordion-title { border-bottom-color: var(--border); color: var(--primary); }
.faq-accordion .accordion-title::before { content: none; }
.faq-accordion .accordion-title::after {
  content: '';
  position: absolute;
  right: 24px;
  top: calc(50% - 5px);
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}
.faq-accordion .accordion-item.is-active > .accordion-title::after { transform: rotate(-135deg); border-color: var(--primary); }
.faq-accordion .accordion-content { padding: 18px 24px; color: var(--text); font-size: 15px; line-height: 1.8; background: var(--white); }
.faq-accordion .accordion-content p { margin-bottom: 12px; }
.faq-accordion .accordion-content p:last-child { margin-bottom: 0; }

.cta-section { background: var(--dark); padding: 80px 0; color: #fff; }
.cta-box { text-align: center; max-width: 720px; margin: 0 auto; }
.cta-box h2 { color: #fff; font-size: 32px; margin-bottom: 12px; }
.cta-box p { color: #94A3B8; font-size: 16px; margin-bottom: 28px; }
.cta-box .btn { font-size: 16px; }

.site-footer { background: var(--dark); color: #94A3B8; padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1.2fr; gap: 48px; padding-bottom: 40px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.footer-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.footer-logo svg { width: 32px; height: 32px; flex: 0 0 auto; }
.footer-logo .logo-text { color: #fff; font-size: 20px; font-weight: 700; }
.footer-desc { font-size: 14px; line-height: 1.8; color: #94A3B8; margin-bottom: 0; }
.footer-title { color: #fff; font-size: 16px; margin-bottom: 16px; }
.footer-links, .footer-contact { list-style: none; padding: 0; margin: 0; }
.footer-links li, .footer-contact li { margin-bottom: 10px; }
.footer-links a { color: #94A3B8; font-size: 14px; transition: color 0.25s; }
.footer-links a:hover { color: #7DD3FC; }
.footer-contact li { font-size: 14px; display: flex; align-items: center; gap: 8px; }
.footer-contact i { width: 16px; color: var(--accent); font-size: 14px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.08); text-align: center; padding: 20px 0; font-size: 14px; color: #94A3B8; margin-top: 40px; }
.footer-bottom p { margin: 0; }
.footer-bottom a { color: #94A3B8; }

@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .main-nav ul { gap: 20px; }
}
@media (max-width: 900px) {
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    display: none;
    max-height: calc(100vh - 64px);
    overflow-y: auto;
    box-shadow: 0 12px 28px rgba(15, 42, 74, 0.1);
    padding: 0;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: 0; padding: 8px 24px; margin: 0; }
  .main-nav li { border-bottom: 1px solid #F1F5F9; }
  .main-nav li:last-child { border-bottom: none; }
  .main-nav a { display: block; padding: 16px 0; font-size: 18px; }
  .main-nav a.active::after { display: none; }
  .header-cta { display: none; }
  .menu-toggle { display: flex; }
}
@media (max-width: 768px) {
  .article-section { padding: 48px 0; }
  .related-section { padding: 48px 0 16px; }
  .faq-section { padding: 48px 0; }
  .cta-section { padding: 56px 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .article-meta { gap: 14px; }
  .article-footer-nav { flex-direction: column; }
  .breadcrumb .current { max-width: 180px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .header-inner { gap: 12px; }
  .logo-text { font-size: 17px; }
  .article-title { font-size: 26px; }
  .article-lede { font-size: 15px; }
  .article-content { font-size: 15px; }
  .cta-box h2 { font-size: 26px; }
  .related-body h3 { font-size: 16px; }
  .breadcrumb { font-size: 13px; }
}

/* roulang page: category2 */
:root {
            --primary: #1E5AA8;
            --primary-dark: #14438A;
            --primary-light: #EFF6FF;
            --accent: #14B8A6;
            --accent-dark: #0D9488;
            --accent-light: #E6FAF6;
            --bg: #FAFCFF;
            --bg-alt: #F5F9FC;
            --dark: #0F2A4A;
            --text: #334155;
            --text-title: #10233F;
            --text-muted: #64748B;
            --border: #E2E8F0;
            --success: #10B981;
            --error: #EF4444;
            --warning: #F59E0B;
            --radius-lg: 12px;
            --radius-md: 8px;
            --shadow-sm: 0 4px 16px rgba(30, 90, 168, 0.08);
            --shadow-hover: 0 12px 28px rgba(30, 90, 168, 0.14);
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 16px;
            font-feature-settings: "tnum";
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

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

        /* ========== 按钮体系 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            padding: 0 28px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            border: 1.5px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            white-space: nowrap;
            line-height: 1;
        }

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

        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            box-shadow: 0 0 0 4px rgba(20, 67, 138, 0.2);
            color: #fff;
            transform: translateY(-1px);
        }

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

        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-1px);
        }

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

        .btn-accent:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            box-shadow: 0 0 0 4px rgba(20, 184, 166, 0.2);
            color: #fff;
            transform: translateY(-1px);
        }

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

        .btn-lg {
            min-height: 52px;
            padding: 0 40px;
            font-size: 16px;
        }

        .btn:active {
            transform: translateY(1px) scale(0.98);
        }

        .btn-block {
            width: 100%;
        }

        /* ========== 标签 / 徽章 ========== */
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            line-height: 1.4;
        }

        .badge-accent {
            background: var(--accent-light);
            color: #0F766E;
        }

        .badge-primary {
            background: var(--primary-light);
            color: var(--primary);
        }

        .badge-soft {
            background: #F1F5F9;
            color: var(--text-muted);
        }

        /* ========== Header / Nav ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: #fff;
            border-bottom: 1px solid var(--border);
            height: 64px;
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(15, 42, 74, 0.08);
        }

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

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

        .brand svg {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
        }

        .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-title);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 24px;
        }

        .main-nav ul {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .main-nav ul li a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            transition: var(--transition);
        }

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

        .main-nav ul li a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }

        .header-btn {
            margin-left: 8px;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 6px;
            width: 44px;
            height: 44px;
            background: transparent;
            border: 1px solid var(--border);
            border-radius: 8px;
            cursor: pointer;
            padding: 8px;
            transition: var(--transition);
        }

        .nav-toggle span {
            display: block;
            height: 2px;
            width: 100%;
            background: var(--text-title);
            border-radius: 2px;
            transition: var(--transition);
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(8px) rotate(45deg);
        }

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

        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-8px) rotate(-45deg);
        }

        /* ========== Hero ========== */
        .page-hero {
            position: relative;
            background: linear-gradient(135deg, #F0F6FF 0%, #FFFFFF 60%, #E6FAF6 100%);
            padding: 96px 0 80px;
            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 30%;
            opacity: 0.18;
            z-index: 0;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            right: -80px;
            top: -80px;
            width: 340px;
            height: 340px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(20, 184, 166, 0.12) 0%, transparent 70%);
            z-index: 1;
        }

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

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

        .hero-badge-row {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }

        .page-hero h1 {
            font-size: 44px;
            line-height: 1.25;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }

        .hero-subtitle {
            font-size: 18px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 36px;
            max-width: 600px;
        }

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

        /* ========== 数据导览条 ========== */
        .data-bar {
            background: #fff;
            padding: 40px 0;
            border-bottom: 1px solid var(--border);
        }

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

        .data-item {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            transition: var(--transition);
        }

        .data-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(30, 90, 168, 0.3);
        }

        .data-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 22px;
            color: var(--primary);
            background: var(--primary-light);
        }

        .data-number {
            font-size: 34px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.2;
            font-feature-settings: "tnum";
        }

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

        /* ========== 通用板块 ========== */
        .section {
            padding: 96px 0;
        }

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

        .section-white {
            background: #fff;
        }

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 600;
            color: var(--text-title);
            line-height: 1.3;
            margin-bottom: 16px;
            position: relative;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        .section-head .section-subline {
            width: 56px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent);
            margin: 20px auto 0;
        }

        /* ========== 嘉宾卡片 ========== */
        .speaker-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }

        .speaker-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 40px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .speaker-avatar {
            width: 96px;
            height: 96px;
            border-radius: 50%;
            margin: 0 auto 20px;
            overflow: hidden;
            border: 3px solid var(--accent);
            object-fit: cover;
        }

        .speaker-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 4px;
        }

        .speaker-role {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .speaker-tags {
            display: flex;
            gap: 8px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ========== 议程时间线 ========== */
        .timeline {
            position: relative;
            max-width: 880px;
            margin: 0 auto;
        }

        .timeline::before {
            content: "";
            position: absolute;
            left: 120px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border);
        }

        .timeline-item {
            display: flex;
            gap: 32px;
            margin-bottom: 48px;
            position: relative;
        }

        .timeline-item:last-child {
            margin-bottom: 0;
        }

        .timeline-time {
            flex-shrink: 0;
            width: 88px;
            text-align: right;
            padding-top: 16px;
        }

        .timeline-time .time-date {
            display: block;
            font-size: 13px;
            color: var(--text-muted);
        }

        .timeline-time .time-clock {
            display: block;
            font-size: 18px;
            font-weight: 600;
            color: var(--text-title);
            font-feature-settings: "tnum";
        }

        .timeline-dot {
            position: absolute;
            left: 112px;
            top: 24px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--accent);
            border: 3px solid #fff;
            box-shadow: 0 0 0 2px var(--accent);
            transform: translateX(-50%);
        }

        .timeline-card {
            flex: 1;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .timeline-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .timeline-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 8px;
        }

        .timeline-card p {
            font-size: 15px;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ========== 议题亮点 ========== */
        .topic-grid {
            display: flex;
            flex-direction: column;
            gap: 48px;
        }

        .topic-row {
            display: flex;
            align-items: center;
            gap: 48px;
        }

        .topic-row:nth-child(even) {
            flex-direction: row-reverse;
        }

        .topic-media {
            flex: 1;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .topic-media img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .topic-media:hover img {
            transform: scale(1.03);
        }

        .topic-body {
            flex: 1;
        }

        .topic-body h3 {
            font-size: 24px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .topic-body p {
            font-size: 16px;
            color: var(--text);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .topic-points {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .topic-points li {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            margin-bottom: 12px;
            font-size: 15px;
            color: var(--text);
        }

        .topic-points li i {
            color: var(--accent);
            margin-top: 5px;
            font-size: 14px;
        }

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

        .accordion-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            margin-bottom: 16px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
        }

        .accordion-item:hover {
            box-shadow: var(--shadow-hover);
        }

        .accordion-title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-title);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }

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

        .accordion-title i {
            font-size: 14px;
            color: var(--text-muted);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .accordion-item.active .accordion-title i {
            transform: rotate(180deg);
        }

        .accordion-item.active {
            border-left: 3px solid var(--primary);
        }

        .accordion-content {
            display: none;
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text);
            line-height: 1.8;
        }

        .accordion-item.active .accordion-content {
            display: block;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: var(--dark);
            padding: 88px 0;
        }

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

        .cta-section h2 {
            color: #fff;
            font-size: 34px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .cta-section .cta-desc {
            color: #94A3B8;
            font-size: 16px;
            margin-bottom: 36px;
            max-width: 480px;
        }

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

        /* ========== 返回首页 ========== */
        .back-home-section {
            padding: 48px 0;
            background: var(--bg);
            text-align: center;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--dark);
            padding: 64px 0 0;
            color: #CBD5E1;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .footer-logo svg {
            width: 32px;
            height: 32px;
        }

        .footer-logo .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: #94A3B8;
            max-width: 360px;
            margin-bottom: 0;
        }

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

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

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

        .footer-links a {
            color: #94A3B8;
            font-size: 14px;
            transition: color 0.2s ease;
        }

        .footer-links a:hover {
            color: #7DD3FC;
        }

        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 12px;
            font-size: 14px;
            color: #94A3B8;
        }

        .footer-contact li i {
            margin-top: 5px;
            font-size: 14px;
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 13px;
            color: #64748B;
            margin: 0;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .page-hero h1 {
                font-size: 38px;
            }

            .topic-row,
            .topic-row:nth-child(even) {
                flex-direction: column;
                gap: 24px;
            }

            .topic-media {
                width: 100%;
            }
        }

        @media (max-width: 900px) {
            .nav-toggle {
                display: flex;
            }

            .main-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 16px 32px rgba(15, 42, 74, 0.12);
                display: none;
                gap: 16px;
            }

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

            .main-nav ul {
                flex-direction: column;
                gap: 4px;
                align-items: stretch;
            }

            .main-nav ul li a {
                padding: 12px 16px;
                font-size: 17px;
                width: 100%;
            }

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

            .page-hero {
                padding: 72px 0 56px;
            }

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

            .section {
                padding: 72px 0;
            }

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

            .data-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

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

            .timeline::before {
                left: 16px;
            }

            .timeline-item {
                flex-direction: column;
                gap: 8px;
                padding-left: 44px;
            }

            .timeline-time {
                width: auto;
                text-align: left;
                padding-top: 0;
            }

            .timeline-dot {
                left: 16px;
                top: 22px;
            }

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

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }

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

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

            .hero-actions {
                flex-direction: column;
            }

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

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

            .data-item {
                padding: 20px 16px;
            }

            .speaker-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .section-head {
                margin-bottom: 36px;
            }

            .topic-grid {
                gap: 40px;
            }

            .cta-actions {
                flex-direction: column;
                width: 100%;
            }

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

            .footer-bottom p {
                font-size: 12px;
            }
        }

        @media (min-width: 901px) and (max-width: 1200px) {
            .container {
                padding: 0 32px;
            }
        }

        /* ========== 可访问性 ========== */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

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

        .fade-in-up {
            animation: fadeInUp 0.6s ease forwards;
            opacity: 0;
        }

/* roulang page: category3 */
:root{
  --primary:#1E5AA8;
  --primary-hover:#14438A;
  --accent:#14B8A6;
  --accent-hover:#0D9488;
  --bg-page:#FAFCFF;
  --bg-alt:#F5F9FC;
  --bg-dark:#0F2A4A;
  --text-heading:#10233F;
  --text-body:#334155;
  --text-muted:#64748B;
  --border:#E2E8F0;
  --radius-card:12px;
  --radius-btn:8px;
  --shadow-card:0 4px 16px rgba(30,90,168,0.08);
  --shadow-card-hover:0 12px 28px rgba(30,90,168,0.14);
  --font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,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-page);
  color:var(--text-body);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  font-feature-settings:"tnum";
}
img{max-width:100%;display:block}
a{text-decoration:none;color:var(--primary);transition:color .2s}
a:hover{color:var(--primary-hover)}
ul{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-alt{background:var(--bg-alt)}
.section-white{background:#fff}
.section-sm{padding:56px 0}
.text-center{text-align:center}
.text-muted{color:var(--text-muted)}
.fs-14{font-size:14px}
.fs-15{font-size:15px}

/* 按钮体系 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:44px;
  padding:0 28px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:all .25s ease;
  line-height:1;
  white-space:nowrap;
}
.btn-primary{
  background:var(--primary);
  color:#fff;
  border-color:var(--primary);
}
.btn-primary:hover{
  background:var(--primary-hover);
  border-color:var(--primary-hover);
  color:#fff;
  box-shadow:0 0 0 3px rgba(20,59,138,0.18);
}
.btn-accent{
  background:var(--accent);
  color:#fff;
  border-color:var(--accent);
}
.btn-accent:hover{
  background:var(--accent-hover);
  border-color:var(--accent-hover);
  color:#fff;
}
.btn-outline{
  background:transparent;
  color:var(--primary);
  border-color:var(--primary);
}
.btn-outline:hover{
  background:#EFF6FF;
  color:var(--primary-hover);
}
.btn-outline-light{
  background:transparent;
  color:#fff;
  border-color:rgba(255,255,255,.7);
}
.btn-outline-light:hover{
  background:rgba(255,255,255,.1);
  color:#fff;
}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn:active{transform:translateY(1px)}
.btn:focus-visible,.nav-cta:focus-visible,.brand:focus-visible,.footer-links a:focus-visible{
  outline:3px solid rgba(30,90,168,.35);
  outline-offset:2px;
}

/* 顶部导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow .3s;
}
.site-header.scrolled{
  box-shadow:0 4px 20px rgba(16,35,63,.08);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:64px;
  gap:12px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand svg{
  width:38px;
  height:38px;
  display:block;
}
.brand-text{
  font-size:20px;
  font-weight:700;
  color:var(--text-heading);
  letter-spacing:.5px;
}
.main-nav ul{
  display:flex;
  align-items:center;
  gap:6px;
}
.main-nav ul li a{
  display:block;
  padding:8px 18px;
  font-size:15px;
  font-weight:500;
  color:var(--text-body);
  border-radius:8px;
  transition:all .25s;
}
.main-nav ul li a:hover{
  color:var(--primary);
  background:#EFF6FF;
}
.main-nav ul li a.active{
  color:var(--primary);
  background:#EFF6FF;
  font-weight:600;
}
.header-cta{
  flex-shrink:0;
}
.hamburger{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:40px;
  height:40px;
  background:transparent;
  border:1px solid var(--border);
  border-radius:8px;
  cursor:pointer;
  padding:8px;
  transition:background .2s;
}
.hamburger span{
  display:block;
  height:2px;
  width:100%;
  background:var(--text-heading);
  border-radius:2px;
  transition:all .3s;
}
.hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.hamburger:hover{background:var(--bg-alt)}

/* Hero 分类专题 */
.page-hero{
  position:relative;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  padding:96px 0 84px;
  color:#fff;
}
.page-hero::before{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(15,42,74,.92) 0%,rgba(15,42,74,.75) 55%,rgba(15,42,74,.35) 100%);
}
.page-hero .container{
  position:relative;
  z-index:2;
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 16px;
  background:rgba(20,184,166,.18);
  border:1px solid rgba(20,184,166,.45);
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  color:#C7F5EE;
  margin-bottom:18px;
}
.page-hero h1{
  font-size:42px;
  font-weight:700;
  color:#fff;
  line-height:1.2;
  max-width:760px;
  margin-bottom:20px;
}
.page-hero h1 span{
  color:#7DD3FC;
}
.page-hero .hero-sub{
  font-size:17px;
  color:rgba(255,255,255,.85);
  max-width:620px;
  line-height:1.8;
  margin-bottom:32px;
}
.hero-actions{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
}
.hero-meta-row{
  display:flex;
  gap:28px;
  margin-top:40px;
  flex-wrap:wrap;
}
.hero-meta-item{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:rgba(255,255,255,.88);
}
.hero-meta-item i{
  color:var(--accent);
  font-size:16px;
}

/* Section Head */
.section-head{
  margin-bottom:48px;
}
.section-head .eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:1px;
  color:var(--accent);
  text-transform:uppercase;
  margin-bottom:10px;
}
.section-head h2{
  font-size:32px;
  font-weight:700;
  color:var(--text-heading);
  line-height:1.3;
  margin-bottom:12px;
}
.section-head p{
  font-size:16px;
  color:var(--text-muted);
  max-width:720px;
  line-height:1.7;
}
.section-head.center{
  text-align:center;
}
.section-head.center p{
  margin:0 auto;
}
.divider-line{
  width:48px;
  height:3px;
  background:var(--accent);
  border-radius:3px;
  margin-top:8px;
}
.section-head.center .divider-line{
  margin:8px auto 0;
}

/* 票种时间线 */
.ticket-timeline{
  position:relative;
  max-width:900px;
  margin:0 auto;
  padding-left:0;
}
.ticket-timeline::before{
  content:'';
  position:absolute;
  left:50%;
  top:10px;
  bottom:10px;
  width:2px;
  background:linear-gradient(180deg,var(--primary) 0%,var(--accent) 50%,var(--primary) 100%);
  transform:translateX(-50%);
}
.ticket-item{
  position:relative;
  width:50%;
  padding:0 40px 40px 0;
  text-align:right;
}
.ticket-item:nth-child(even){
  margin-left:50%;
  padding:0 0 40px 40px;
  text-align:left;
}
.ticket-item::before{
  content:'';
  position:absolute;
  top:24px;
  right:-9px;
  width:18px;
  height:18px;
  background:var(--primary);
  border:4px solid #fff;
  border-radius:50%;
  box-shadow:0 0 0 3px var(--accent);
  z-index:2;
}
.ticket-item:nth-child(even)::before{
  left:-9px;
  right:auto;
}
.ticket-item::after{
  content:'';
  position:absolute;
  top:28px;
  right:20px;
  width:20px;
  height:2px;
  background:rgba(20,184,166,.5);
}
.ticket-item:nth-child(even)::after{
  left:20px;
  right:auto;
}
.ticket-label{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  color:var(--primary);
  background:#EFF6FF;
  padding:5px 14px;
  border-radius:999px;
  margin-bottom:12px;
}
.ticket-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:28px 26px;
  text-align:left;
  transition:all .3s ease;
}
.ticket-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-card-hover);
}
.ticket-card.featured{
  border:2px solid var(--accent);
  position:relative;
}
.ticket-card.featured .ribbon{
  position:absolute;
  top:-12px;
  right:18px;
  background:var(--accent);
  color:#fff;
  font-size:12px;
  font-weight:700;
  padding:4px 14px;
  border-radius:999px;
  box-shadow:0 2px 8px rgba(20,184,166,.35);
}
.ticket-name{
  font-size:20px;
  font-weight:700;
  color:var(--text-heading);
  margin-bottom:6px;
}
.ticket-price-wrap{
  display:flex;
  align-items:baseline;
  gap:6px;
  margin-bottom:16px;
}
.ticket-price{
  font-size:36px;
  font-weight:700;
  color:var(--primary);
  line-height:1;
}
.ticket-price .unit{
  font-size:15px;
  font-weight:400;
  color:var(--text-muted);
  margin-left:2px;
}
.ticket-origin{
  font-size:13px;
  color:var(--text-muted);
  text-decoration:line-through;
}
.ticket-desc{
  font-size:14px;
  color:var(--text-muted);
  margin-bottom:16px;
  line-height:1.7;
}
.ticket-perks{
  margin-bottom:20px;
}
.ticket-perks li{
  position:relative;
  padding:6px 0 6px 28px;
  font-size:14px;
  color:var(--text-body);
  line-height:1.6;
}
.ticket-perks li i{
  position:absolute;
  left:0;
  top:9px;
  color:var(--accent);
  font-size:14px;
}
.ticket-perks li.off{
  opacity:.45;
  text-decoration:line-through;
}
.ticket-perks li.off i{
  color:var(--text-muted);
}

/* 权益对比 */
.benefit-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:28px;
}
.benefit-item{
  background:#fff;
  border-radius:var(--radius-card);
  border:1px solid var(--border);
  box-shadow:var(--shadow-card);
  padding:36px 28px;
  text-align:center;
  transition:all .3s;
}
.benefit-item:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-card-hover);
  border-color:rgba(20,184,166,.4);
}
.benefit-icon{
  width:70px;
  height:70px;
  margin:0 auto 20px;
  background:linear-gradient(135deg,#EFF6FF 0%,#E6FAF6 100%);
  border-radius:20px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:28px;
  color:var(--primary);
  transition:all .3s;
}
.benefit-item:hover .benefit-icon{
  background:var(--primary);
  color:#fff;
}
.benefit-item h3{
  font-size:18px;
  font-weight:700;
  color:var(--text-heading);
  margin-bottom:10px;
}
.benefit-item p{
  font-size:14px;
  color:var(--text-muted);
  line-height:1.7;
}

/* 购票流程 */
.steps-wrap{
  position:relative;
  max-width:960px;
  margin:0 auto;
}
.steps-wrap .grid-x{
  margin-bottom:32px;
}
.step-card{
  position:relative;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:32px 24px;
  text-align:center;
  height:100%;
  transition:all .3s;
}
.step-card:hover{
  box-shadow:var(--shadow-card-hover);
  transform:translateY(-4px);
}
.step-num{
  width:52px;
  height:52px;
  margin:0 auto 18px;
  background:var(--primary);
  color:#fff;
  font-size:20px;
  font-weight:700;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 6px 16px rgba(30,90,168,.28);
}
.step-card h3{
  font-size:17px;
  font-weight:700;
  color:var(--text-heading);
  margin-bottom:8px;
}
.step-card p{
  font-size:14px;
  color:var(--text-muted);
  line-height:1.7;
}

/* 服务说明 */
.service-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
}
.service-card{
  background:#fff;
  border-radius:var(--radius-card);
  border:1px solid var(--border);
  padding:30px 28px;
  position:relative;
  overflow:hidden;
  transition:all .3s;
}
.service-card::before{
  content:'';
  position:absolute;
  top:0;
  left:0;
  width:4px;
  height:100%;
  background:var(--accent);
}
.service-card h3{
  font-size:18px;
  font-weight:700;
  color:var(--text-heading);
  margin-bottom:14px;
  display:flex;
  align-items:center;
  gap:10px;
}
.service-card h3 i{
  color:var(--accent);
}
.service-card p{
  font-size:14px;
  color:var(--text-muted);
  line-height:1.8;
}
.service-card ul{
  margin-top:12px;
}
.service-card ul li{
  font-size:14px;
  color:var(--text-body);
  padding:5px 0 5px 22px;
  position:relative;
}
.service-card ul li::before{
  content:'\f00c';
  font-family:'Font Awesome 6 Free';
  font-weight:900;
  position:absolute;
  left:0;
  color:var(--accent);
  font-size:13px;
}

/* FAQ */
.faq-wrap{
  max-width:860px;
  margin:0 auto;
}
.faq-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  box-shadow:0 2px 10px rgba(30,90,168,0.04);
  margin-bottom:16px;
  overflow:hidden;
  transition:box-shadow .3s;
}
.faq-card:hover{
  box-shadow:var(--shadow-card);
}
.faq-card .faq-q{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 24px;
  cursor:pointer;
  font-size:16px;
  font-weight:600;
  color:var(--text-heading);
  transition:background .2s;
}
.faq-card .faq-q:hover{
  background:#F8FBFF;
}
.faq-card .faq-q .icon{
  flex-shrink:0;
  width:28px;
  height:28px;
  border-radius:8px;
  background:var(--bg-alt);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--primary);
  transition:all .3s;
  font-size:13px;
}
.faq-card.open .faq-q .icon{
  background:var(--accent);
  color:#fff;
  transform:rotate(45deg);
}
.faq-card .faq-a{
  display:none;
  padding:0 24px 22px;
  font-size:15px;
  color:var(--text-body);
  line-height:1.8;
  border-top:1px solid #F1F5F9;
  margin:0 24px;
  padding:16px 0 20px;
}
.faq-card.open .faq-a{
  display:block;
}

/* CTA */
.cta-section{
  background:var(--bg-dark);
  padding:80px 0;
  color:#fff;
}
.cta-content{
  text-align:center;
  max-width:680px;
  margin:0 auto;
}
.cta-content h2{
  font-size:32px;
  font-weight:700;
  margin-bottom:12px;
}
.cta-content p{
  font-size:16px;
  color:rgba(255,255,255,.8);
  margin-bottom:30px;
}
.cta-actions{
  display:flex;
  gap:14px;
  justify-content:center;
  flex-wrap:wrap;
}
.back-home-link{
  margin-top:20px;
  font-size:14px;
  color:rgba(255,255,255,.7);
}
.back-home-link a{
  color:#7DD3FC;
  text-decoration:underline;
}

/* Footer */
.site-footer{
  background:var(--bg-dark);
  color:#CBD5E1;
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr;
  gap:48px;
  padding-bottom:48px;
}
.footer-logo{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}
.footer-logo svg{
  width:36px;
  height:36px;
}
.logo-text{
  font-size:19px;
  font-weight:700;
  color:#fff;
}
.footer-desc{
  font-size:14px;
  color:#94A3B8;
  line-height:1.8;
  max-width:320px;
}
.footer-title{
  font-size:16px;
  font-weight:700;
  color:#fff;
  margin-bottom:18px;
}
.footer-links li{
  margin-bottom:10px;
}
.footer-links li a{
  color:#94A3B8;
  font-size:14px;
  transition:all .2s;
}
.footer-links li a:hover{
  color:#7DD3FC;
  padding-left:4px;
}
.footer-contact li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  margin-bottom:12px;
  font-size:14px;
  color:#94A3B8;
}
.footer-contact li i{
  color:var(--accent);
  margin-top:4px;
  width:16px;
  text-align:center;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0;
  text-align:center;
  font-size:13px;
  color:#64748B;
}

/* 返回首页右侧漂浮按钮 */
.float-back{
  position:fixed;
  bottom:30px;
  right:30px;
  z-index:999;
  width:52px;
  height:52px;
  border-radius:50%;
  background:var(--primary);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 8px 24px rgba(30,90,168,.35);
  transition:all .3s;
  font-size:18px;
}
.float-back:hover{
  background:var(--primary-hover);
  transform:translateY(-3px);
  box-shadow:0 12px 30px rgba(30,90,168,.4);
}

/* 响应式断点 */
@media (max-width:1024px){
  .benefit-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .service-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .footer-grid{
    grid-template-columns:1fr 1fr;
  }
}
@media (max-width:900px){
  .section{padding:72px 0}
  .header-cta{display:none}
  .main-nav{
    position:fixed;
    top:64px;
    left:0;
    right:0;
    background:#fff;
    border-bottom:1px solid var(--border);
    max-height:0;
    overflow:hidden;
    transition:max-height .35s ease;
    box-shadow:0 8px 24px rgba(15,42,74,.08);
    z-index:999;
  }
  .main-nav.open{
    max-height:340px;
  }
  .main-nav ul{
    flex-direction:column;
    gap:0;
    padding:12px 24px;
  }
  .main-nav ul li a{
    padding:12px 0;
    font-size:17px;
    border-bottom:1px solid #F1F5F9;
    border-radius:0;
  }
  .main-nav ul li:last-child a{
    border-bottom:none;
  }
  .hamburger{
    display:flex;
  }
  .ticket-timeline::before{
    left:20px;
    transform:none;
  }
  .ticket-item,.ticket-item:nth-child(even){
    width:100%;
    margin-left:0;
    padding:0 0 40px 52px;
    text-align:left;
  }
  .ticket-item::before,.ticket-item:nth-child(even)::before{
    left:11px;
    right:auto;
  }
  .ticket-item::after,.ticket-item:nth-child(even)::after{
    left:36px;
    right:auto;
    width:16px;
  }
}
@media (max-width:768px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .page-hero{padding:64px 0 56px}
  .page-hero h1{font-size:32px}
  .hero-meta-row{gap:16px}
  .benefit-grid{grid-template-columns:1fr}
  .service-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .section-head h2{font-size:26px}
  .step-card{padding:24px 18px}
  .cta-content h2{font-size:26px}
  .hero-actions .btn{width:100%}
  .hero-actions .btn-outline{width:100%}
  .float-back{display:none}
}
@media (max-width:520px){
  .brand-text{font-size:17px}
  .brand svg{width:32px;height:32px}
  .ticket-card{padding:22px 18px}
  .ticket-price{font-size:30px}
  .faq-card .faq-q{font-size:15px;padding:18px 16px}
  .faq-card .faq-a{font-size:14px;padding:14px 0 18px;margin:0 16px}
  .btn{width:100%}
  .ticket-card .btn{width:100%}
  .cta-actions .btn{width:100%}
}