/* roulang page: index */
:root {
  --primary: #131c3a;
  --primary-2: #1d2b52;
  --accent: #f05a28;
  --accent-hover: #d94a1d;
  --accent-2: #ffb800;
  --bg: #f5f7fd;
  --bg-dark: #0f1428;
  --card: #ffffff;
  --text: #19233c;
  --muted: #5e6b8a;
  --border: #e3e8f4;
  --radius: 18px;
  --radius-sm: 10px;
  --shadow: 0 8px 30px rgba(19, 28, 58, 0.08);
  --shadow-lg: 0 18px 50px rgba(19, 28, 58, 0.16);
  --container: 1200px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}
img {
  max-width: 100%;
  display: block;
  border-radius: var(--radius);
}
ul, ol {
  list-style: none;
}
button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
  background: none;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header / Topbar ===== */
.topbar {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.topbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.topbar-left {
  display: flex;
  align-items: center;
  gap: 10px;
}
.topbar-left i {
  color: var(--accent-2);
  font-style: normal;
}
.topbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}
.topbar-right a {
  color: var(--accent-2);
  font-weight: 600;
}
.topbar-right a:hover {
  color: #ffd75e;
}

.main-nav {
  background: linear-gradient(135deg, #ffffff 0%, #f8faff 100%);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 20px rgba(19, 28, 58, 0.04);
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 24px;
  font-weight: 900;
  color: var(--primary);
  letter-spacing: -0.5px;
}
.logo .logo-badge {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  font-size: 11px;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 30px;
  letter-spacing: 0.5px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-links a {
  padding: 10px 18px;
  border-radius: 30px;
  font-weight: 600;
  color: var(--muted);
  font-size: 15px;
  position: relative;
}
.nav-links a:hover {
  color: var(--primary);
  background: rgba(240, 90, 40, 0.06);
}
.nav-links a.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 20px rgba(19, 28, 58, 0.25);
}
.nav-cta {
  background: linear-gradient(135deg, var(--accent), #ff8a40);
  color: #fff;
  padding: 10px 24px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 14px;
  box-shadow: 0 8px 24px rgba(240, 90, 40, 0.35);
  transition: var(--transition);
}
.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(240, 90, 40, 0.45);
  color: #fff;
}
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--bg);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 20px;
}

/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, rgba(19, 28, 58, 0.92), rgba(29, 43, 82, 0.82)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  color: #fff;
  padding: 110px 0 100px;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  right: -120px;
  top: -120px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 184, 0, 0.18), transparent 70%);
  border-radius: 50%;
}
.hero .container {
  position: relative;
  z-index: 2;
}
.hero-tag {
  display: inline-block;
  background: rgba(255, 184, 0, 0.15);
  border: 1px solid rgba(255, 184, 0, 0.4);
  color: var(--accent-2);
  font-size: 13px;
  font-weight: 700;
  padding: 5px 16px;
  border-radius: 30px;
  margin-bottom: 22px;
  letter-spacing: 1px;
}
.hero h1 {
  font-size: 52px;
  line-height: 1.18;
  font-weight: 900;
  max-width: 760px;
  margin-bottom: 22px;
  letter-spacing: -1px;
}
.hero h1 .highlight {
  background: linear-gradient(120deg, var(--accent-2), #ff8a40);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 18px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
  max-width: 640px;
  margin-bottom: 36px;
}
.hero-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 15px;
  transition: var(--transition);
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), #ff8a40);
  color: #fff;
  box-shadow: 0 10px 28px rgba(240, 90, 40, 0.4);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 38px rgba(240, 90, 40, 0.5);
  color: #fff;
}
.btn-outline {
  border: 2px solid rgba(255, 255, 255, 0.6);
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(6px);
}
.btn-outline:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
}
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  margin-top: 56px;
  padding-top: 36px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}
.hero-stats .stat-item {
  position: relative;
}
.hero-stats .stat-num {
  font-size: 38px;
  font-weight: 900;
  line-height: 1;
  color: var(--accent-2);
}
.hero-stats .stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 6px;
}

/* ===== Section common ===== */
.section {
  padding: 96px 0;
}
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}
.section-head .se-tag {
  display: inline-block;
  background: rgba(240, 90, 40, 0.08);
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  padding: 5px 16px;
  border-radius: 30px;
  margin-bottom: 14px;
}
.section-head h2 {
  font-size: 38px;
  font-weight: 900;
  line-height: 1.25;
  color: var(--primary);
  letter-spacing: -0.5px;
  margin-bottom: 14px;
}
.section-head p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
}
.section-gray {
  background: #fff;
}

/* ===== Features ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.feature-card:hover::before {
  opacity: 1;
}
.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 20px;
  color: #fff;
}
.fi-1 { background: linear-gradient(135deg, #f05a28, #ffb800); }
.fi-2 { background: linear-gradient(135deg, #1d2b52, #3b5bdb); }
.fi-3 { background: linear-gradient(135deg, #0ca678, #5cc9a7); }
.feature-card h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 12px;
}
.feature-card p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}
.feature-card img {
  margin-top: 20px;
  border-radius: var(--radius-sm);
  height: 140px;
  width: 100%;
  object-fit: cover;
}

/* ===== Stats dark ===== */
.stats-section {
  background: var(--bg-dark);
  padding: 84px 0;
  position: relative;
  overflow: hidden;
}
.stats-section::before {
  content: '';
  position: absolute;
  left: 50%;
  top: -180px;
  transform: translateX(-50%);
  width: 700px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(240, 90, 40, 0.25), transparent 70%);
}
.stats-wrap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  text-align: center;
  position: relative;
  z-index: 2;
}
.stats-wrap .st-num {
  font-size: 58px;
  font-weight: 900;
  line-height: 1;
  color: var(--accent-2);
}
.stats-wrap .st-label {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 12px;
  font-weight: 500;
}
.stats-wrap .st-item {
  padding: 30px 20px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: var(--transition);
}
.stats-wrap .st-item:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-4px);
}

/* ===== News / CMS ===== */
.news-section {
  padding: 96px 0;
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.news-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  display: flex;
  align-items: flex-start;
  gap: 20px;
  transition: var(--transition);
}
.news-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: transparent;
}
.news-thumb {
  width: 90px;
  height: 90px;
  border-radius: 14px;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--primary-2), var(--primary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: var(--accent-2);
}
.news-body {
  flex: 1;
  min-width: 0;
}
.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 8px;
}
.news-cat {
  background: rgba(240, 90, 40, 0.1);
  color: var(--accent);
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 12px;
}
.news-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.5;
  margin-bottom: 8px;
}
.news-card h3 a:hover {
  color: var(--accent);
}
.news-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 30px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px dashed var(--border);
  color: var(--muted);
  font-size: 16px;
}

/* ===== Categories ===== */
.cat-section {
  background: #fff;
  padding: 96px 0;
}
.cat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}
.cat-card {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg);
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
}
.cat-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}
.cat-card img {
  height: 220px;
  width: 100%;
  object-fit: cover;
  border-radius: 0;
}
.cat-body {
  padding: 32px;
}
.cat-body .cat-tag {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 30px;
  margin-bottom: 14px;
}
.cat-body h3 {
  font-size: 24px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 12px;
}
.cat-body p {
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 20px;
}
.cat-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-weight: 700;
  font-size: 15px;
}
.cat-link:hover {
  gap: 12px;
  color: var(--accent-hover);
}

/* ===== Guide timeline ===== */
.guide-section {
  background: var(--bg);
  padding: 96px 0;
}
.guide-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.guide-step {
  text-align: center;
  padding: 36px 24px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
}
.guide-step:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: var(--accent-2);
  font-size: 22px;
  font-weight: 900;
  margin-bottom: 18px;
  box-shadow: 0 8px 20px rgba(19, 28, 58, 0.2);
}
.guide-step h3 {
  font-size: 18px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 10px;
}
.guide-step p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
}

/* ===== Testimonials ===== */
.testi-section {
  background: #fff;
  padding: 96px 0;
}
.testi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.testi-card {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 32px;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.testi-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}
.testi-text {
  font-size: 15px;
  color: var(--text);
  line-height: 1.85;
  margin-bottom: 24px;
  position: relative;
  padding-left: 24px;
  border-left: 3px solid var(--accent);
}
.testi-user {
  display: flex;
  align-items: center;
  gap: 14px;
}
.testi-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 16px;
}
.testi-user .tu-name {
  font-weight: 700;
  color: var(--primary);
  font-size: 15px;
}
.testi-user .tu-role {
  font-size: 13px;
  color: var(--muted);
}

/* ===== FAQ ===== */
.faq-section {
  padding: 96px 0;
}
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover {
  border-color: rgba(240, 90, 40, 0.3);
}
.faq-question {
  width: 100%;
  text-align: left;
  padding: 22px 30px;
  font-size: 17px;
  font-weight: 700;
  color: var(--primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.faq-question .faq-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 18px;
  transition: var(--transition);
}
.faq-item.active .faq-question .faq-icon {
  transform: rotate(45deg);
  background: var(--accent);
  color: #fff;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-answer-inner {
  padding: 0 30px 24px;
  color: var(--muted);
  line-height: 1.8;
  font-size: 15px;
  border-top: 1px solid var(--border);
  padding-top: 18px;
}

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
  padding: 90px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  left: 20%;
  top: -100px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255, 184, 0, 0.1);
}
.cta-section::after {
  content: '';
  position: absolute;
  right: 10%;
  bottom: -120px;
  width: 350px;
  height: 350px;
  border-radius: 50%;
  background: rgba(240, 90, 40, 0.2);
}
.cta-inner {
  position: relative;
  z-index: 2;
}
.cta-inner h2 {
  font-size: 42px;
  font-weight: 900;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}
.cta-inner p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 18px;
  max-width: 520px;
  margin: 0 auto 36px;
}
.cta-btns {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.cta-btn {
  background: var(--accent-2);
  color: var(--primary);
  font-weight: 800;
  padding: 16px 40px;
  border-radius: 30px;
  font-size: 16px;
  box-shadow: 0 12px 32px rgba(255, 184, 0, 0.3);
  transition: var(--transition);
}
.cta-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 40px rgba(255, 184, 0, 0.45);
  color: var(--primary);
}
.cta-btn-outline {
  border: 2px solid rgba(255, 255, 255, 0.5);
  color: #fff;
  padding: 14px 40px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 16px;
  transition: var(--transition);
}
.cta-btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
  color: #fff;
}

/* ===== Footer ===== */
.footer {
  background: #0b0f1f;
  color: rgba(255, 255, 255, 0.65);
  padding: 60px 0 0;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 50px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand .fb-logo {
  font-size: 24px;
  font-weight: 900;
  color: #fff;
  margin-bottom: 14px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  max-width: 320px;
}
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
}
.footer-col ul li {
  margin-bottom: 12px;
}
.footer-col ul a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
}
.footer-col ul a:hover {
  color: var(--accent-2);
}
.footer-bottom {
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero h1 { font-size: 42px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .guide-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-wrap { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav-wrap { position: relative; }
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 24px;
    right: 24px;
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 16px;
    flex-direction: column;
    align-items: stretch;
    border: 1px solid var(--border);
  }
  .nav-links.open { display: flex; }
  .nav-links a { text-align: center; }
  .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .hero { padding: 80px 0; }
  .hero h1 { font-size: 34px; }
  .hero-desc { font-size: 16px; }
  .hero-stats { gap: 24px; }
  .hero-stats .stat-num { font-size: 30px; }
  .section { padding: 64px 0; }
  .section-head h2 { font-size: 30px; }
  .features-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .cat-grid { grid-template-columns: 1fr; }
  .testi-grid { grid-template-columns: 1fr; }
  .guide-grid { grid-template-columns: 1fr; }
  .cta-inner h2 { font-size: 32px; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .topbar-right span { display: none; }
  .hero h1 { font-size: 28px; }
  .hero-desc { font-size: 15px; }
  .btn { padding: 12px 24px; font-size: 14px; }
  .news-card { flex-direction: column; }
  .news-thumb { width: 100%; height: 120px; }
  .stats-wrap { grid-template-columns: 1fr; }
}

/* roulang page: category1 */
:root {
  --primary: #141b4d;
  --primary-light: #1e2a78;
  --accent: #f5b942;
  --accent-hover: #ffc763;
  --accent-dark: #d9a12e;
  --bg-light: #f5f7fd;
  --bg-white: #ffffff;
  --bg-dark: #0e1338;
  --text: #1c2140;
  --text-muted: #6b7191;
  --border: #e7eaf5;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 12px 36px rgba(20, 27, 77, 0.09);
  --shadow-lg: 0 20px 50px rgba(20, 27, 77, 0.14);
  --transition: all .25s ease;
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-light);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}

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

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

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

ul,
ol {
  list-style: none;
}

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

/* ===== 顶部信息条 ===== */
.topbar {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.82);
  font-size: 13px;
  padding: 9px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.topbar-left,
.topbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.topbar-left i {
  color: var(--accent);
  font-style: normal;
  font-size: 14px;
}

.topbar-right a {
  color: var(--accent);
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 20px;
  background: rgba(245, 185, 66, 0.12);
}

.topbar-right a:hover {
  background: rgba(245, 185, 66, 0.24);
  color: #fff;
}

/* ===== 主导航 ===== */
.main-nav {
  background: var(--bg-white);
  box-shadow: 0 2px 20px rgba(20, 27, 77, 0.06);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
  position: relative;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--primary);
  white-space: nowrap;
}

.logo i {
  font-style: normal;
  font-size: 22px;
}

.logo-badge {
  background: linear-gradient(135deg, var(--accent), #ff9a3c);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 30px;
  letter-spacing: 0.5px;
}

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

.nav-links li a {
  display: flex;
  align-items: center;
  padding: 10px 20px;
  border-radius: 40px;
  font-weight: 600;
  font-size: 15px;
  color: var(--text);
}

.nav-links li a:hover {
  background: rgba(20, 27, 77, 0.05);
  color: var(--primary);
}

.nav-links li a.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(20, 27, 77, 0.22);
}

.nav-cta {
  background: linear-gradient(135deg, var(--accent), #ff9540);
  color: #141b4d;
  font-weight: 800;
  font-size: 14px;
  padding: 11px 24px;
  border-radius: 50px;
  box-shadow: 0 6px 18px rgba(245, 185, 66, 0.4);
  transition: var(--transition);
  white-space: nowrap;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245, 185, 66, 0.55);
  color: var(--primary);
}

.nav-toggle {
  display: none;
  font-size: 24px;
  color: var(--primary);
  width: 44px;
  height: 44px;
  border-radius: 12px;
}

.nav-toggle:hover {
  background: rgba(20, 27, 77, 0.05);
}

/* ===== 页面 Hero ===== */
.page-hero {
  position: relative;
  background: linear-gradient(135deg, rgba(13, 17, 56, 0.94), rgba(30, 42, 120, 0.82)), url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
  padding: 100px 0 90px;
  color: #fff;
  overflow: hidden;
}

.page-hero::after {
  content: '';
  position: absolute;
  bottom: -70px;
  right: -40px;
  width: 340px;
  height: 340px;
  background: rgba(245, 185, 66, 0.12);
  border-radius: 50%;
  filter: blur(40px);
  pointer-events: none;
}

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

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.62);
  margin-bottom: 24px;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.78);
  transition: var(--transition);
}

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

.breadcrumb span {
  color: var(--accent);
  font-weight: 600;
}

.page-hero h1 {
  font-size: 44px;
  line-height: 1.25;
  font-weight: 900;
  letter-spacing: -1px;
  margin-bottom: 16px;
  max-width: 720px;
}

.page-hero .hero-desc {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.82);
  max-width: 620px;
  margin-bottom: 36px;
  line-height: 1.8;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 15px;
  transition: var(--transition);
  border: 2px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #ff9540);
  color: var(--primary);
  box-shadow: 0 8px 24px rgba(245, 185, 66, 0.35);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(245, 185, 66, 0.5);
  color: var(--primary);
}

.btn-outline {
  border-color: rgba(255, 255, 255, 0.45);
  color: #fff;
}

.btn-outline:hover {
  border-color: var(--accent);
  background: rgba(245, 185, 66, 0.15);
  color: #fff;
  transform: translateY(-3px);
}

/* ===== 数据卡板块 ===== */
.stats-section {
  padding: 72px 0;
  background: var(--bg-white);
}

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

.stat-card {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 100px;
  height: 100px;
  background: rgba(245, 185, 66, 0.15);
  border-radius: 50%;
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
  border-color: rgba(245, 185, 66, 0.5);
}

.stat-card:hover::before {
  transform: scale(1.6);
}

.stat-icon {
  font-size: 34px;
  margin-bottom: 16px;
}

.stat-num {
  font-size: 42px;
  font-weight: 900;
  color: var(--primary);
  line-height: 1.15;
}

.stat-label {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 6px;
  font-weight: 600;
}

/* ===== 步骤板块 ===== */
.steps-section {
  padding: 84px 0;
  background: var(--bg-light);
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 52px;
}

.section-tag {
  display: inline-block;
  background: rgba(245, 185, 66, 0.18);
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 800;
  padding: 6px 18px;
  border-radius: 30px;
  letter-spacing: 1px;
  margin-bottom: 14px;
}

.section-head h2 {
  font-size: 32px;
  font-weight: 900;
  color: var(--primary);
  line-height: 1.3;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

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

.steps-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.step-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 36px 24px;
  border: 1px solid var(--border);
  text-align: center;
  position: relative;
  transition: var(--transition);
}

.step-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
  border-color: rgba(245, 185, 66, 0.45);
}

.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  box-shadow: 0 6px 16px rgba(20, 27, 77, 0.25);
}

.step-card .step-icon {
  font-size: 32px;
  margin-bottom: 14px;
  display: block;
}

.step-card h3 {
  font-size: 17px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 10px;
}

.step-card p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== 专题卡片板块 ===== */
.topic-cards-section {
  padding: 84px 0;
  background: var(--bg-white);
}

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

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

.content-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
  border-color: rgba(245, 185, 66, 0.5);
}

.card-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--primary);
}

.card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}

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

.card-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(20, 27, 77, 0.82);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 30px;
  backdrop-filter: blur(4px);
}

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

.card-body h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 10px;
  line-height: 1.4;
}

.card-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 18px;
  flex: 1;
}

.card-link {
  font-size: 14px;
  font-weight: 800;
  color: var(--accent-dark);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

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

/* ===== 适用场景板块 ===== */
.scene-section {
  position: relative;
  background: linear-gradient(120deg, rgba(14, 19, 56, 0.93), rgba(30, 42, 120, 0.86)), url('/assets/images/backpic/back-3.webp') center / cover no-repeat;
  padding: 84px 0;
  color: #fff;
}

.scene-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.scene-title {
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.scene-heading {
  font-size: 32px;
  font-weight: 900;
  line-height: 1.35;
  margin-bottom: 20px;
}

.scene-desc {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.85;
  margin-bottom: 30px;
}

.scene-list {
  display: grid;
  gap: 16px;
}

.scene-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  padding: 20px 22px;
  transition: var(--transition);
}

.scene-item:hover {
  background: rgba(255, 255, 255, 0.13);
  transform: translateX(6px);
  border-color: rgba(245, 185, 66, 0.4);
}

.scene-item i {
  font-size: 22px;
  color: var(--accent);
  margin-top: 4px;
  flex-shrink: 0;
}

.scene-item h4 {
  font-size: 16px;
  font-weight: 800;
  margin-bottom: 4px;
}

.scene-item p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.72);
}

/* ===== FAQ 板块 ===== */
.faq-section {
  padding: 84px 0;
  background: var(--bg-light);
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
}

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

.faq-item:hover {
  border-color: rgba(245, 185, 66, 0.5);
}

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

.faq-q {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 22px 26px;
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  text-align: left;
  line-height: 1.5;
}

.faq-q i {
  font-size: 14px;
  color: var(--text-muted);
  transition: var(--transition);
  flex-shrink: 0;
}

.faq-item.active .faq-q i {
  transform: rotate(180deg);
  color: var(--accent-dark);
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  padding: 0 26px;
  transition: max-height .4s ease, padding .3s ease;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.85;
  border-top: 0 solid var(--border);
}

.faq-item.active .faq-a {
  max-height: 600px;
  padding: 0 26px 24px;
  border-top-width: 1px;
  border-top-style: solid;
}

/* ===== CTA 板块 ===== */
.cta-section {
  position: relative;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  padding: 72px 0;
  text-align: center;
  color: #fff;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -80px;
  left: -60px;
  width: 260px;
  height: 260px;
  background: rgba(245, 185, 66, 0.14);
  border-radius: 50%;
  filter: blur(56px);
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -60px;
  right: -40px;
  width: 220px;
  height: 220px;
  background: rgba(245, 185, 66, 0.1);
  border-radius: 50%;
  filter: blur(48px);
}

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

.cta-section h2 {
  font-size: 34px;
  font-weight: 900;
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}

.cta-section p {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.8);
  max-width: 520px;
  margin: 0 auto 32px;
  line-height: 1.8;
}

.cta-section .btn-primary {
  background: linear-gradient(135deg, var(--accent), #ff9540);
  color: var(--primary);
  font-size: 16px;
  padding: 16px 40px;
}

.cta-section .btn-primary:hover {
  box-shadow: 0 14px 36px rgba(245, 185, 66, 0.55);
}

/* ===== 页脚 ===== */
.footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.75);
  padding: 64px 0 0;
}

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

.footer-brand .fb-logo {
  font-size: 24px;
  font-weight: 900;
  color: #fff;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-brand p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.8;
  max-width: 360px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 26px;
  height: 3px;
  background: var(--accent);
  border-radius: 3px;
}

.footer-col ul li {
  margin-bottom: 12px;
  font-size: 14px;
}

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

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.55);
}

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

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .step-card:nth-child(4),
  .step-card:nth-child(5) {
    grid-column: auto;
  }

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

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

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

@media (max-width: 768px) {
  .topbar-right span {
    display: none;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: 74px;
    left: 0;
    right: 0;
    background: var(--bg-white);
    flex-direction: column;
    align-items: stretch;
    padding: 20px 24px 28px;
    box-shadow: 0 20px 40px rgba(20, 27, 77, 0.14);
    border-top: 1px solid var(--border);
  }

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

  .nav-links li a {
    justify-content: flex-start;
    padding: 14px 20px;
    font-size: 16px;
    border-radius: 14px;
  }

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

  .nav-cta {
    display: none;
  }

  .page-hero {
    padding: 72px 0 64px;
  }

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

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

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

  .stats-section,
  .steps-section,
  .topic-cards-section,
  .faq-section,
  .scene-section {
    padding: 56px 0;
  }

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

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

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

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

  .cta-section p {
    font-size: 15px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 36px;
  }

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

@media (max-width: 520px) {
  .container {
    padding: 0 18px;
  }

  .topbar .container {
    flex-direction: column;
    gap: 4px;
  }

  .logo {
    font-size: 20px;
  }

  .page-hero h1 {
    font-size: 26px;
  }

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

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

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

  .scene-item {
    padding: 16px;
  }

  .faq-q {
    font-size: 15px;
    padding: 18px 18px;
  }

  .faq-a {
    padding: 0 18px;
  }

  .faq-item.active .faq-a {
    padding: 0 18px 18px;
  }

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

/* roulang page: article */
:root {
  --primary: #f43f5e;
  --primary-dark: #be123c;
  --primary-light: #fda4af;
  --secondary: #f59e0b;
  --accent: #8b5cf6;
  --dark: #0b0b12;
  --dark-soft: #17171f;
  --dark-card: #1c1c26;
  --bg: #f4f5fa;
  --white: #ffffff;
  --text: #16161f;
  --text-muted: #7b7d8a;
  --border: #e7e8ef;
  --radius-lg: 24px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 10px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 10px 28px rgba(15, 23, 42, 0.10);
  --shadow-lg: 0 24px 60px rgba(15, 23, 42, 0.16);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

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

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

ul,
ol {
  list-style: none;
}

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

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

.container {
  width: 92%;
  max-width: 1200px;
  margin-inline: auto;
}

.section {
  padding: 80px 0;
}

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

.section-tag {
  display: inline-block;
  background: rgba(244, 63, 94, 0.08);
  color: var(--primary);
  padding: 6px 18px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.section-head h2 {
  font-size: clamp(26px, 3.5vw, 36px);
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}

.section-head p {
  color: var(--text-muted);
  max-width: 620px;
  margin-inline: auto;
  font-size: 15px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: #fff;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition);
}

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

.btn-primary:focus-visible {
  outline: 3px solid rgba(244, 63, 94, 0.4);
  outline-offset: 2px;
}

/* ===== Topbar ===== */
.topbar {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.78);
  font-size: 13px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.topbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 36px;
  gap: 16px;
}

.topbar-left,
.topbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.topbar-left i {
  color: var(--secondary);
}

.topbar-right a {
  color: var(--secondary);
  font-weight: 600;
  transition: var(--transition);
}

.topbar-right a:hover {
  color: #fff;
}

/* ===== Main Nav ===== */
.main-nav {
  background: rgba(255, 255, 255, 0.92);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.main-nav .nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
}

.logo {
  font-size: 24px;
  font-weight: 800;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.logo-badge {
  font-size: 11px;
  background: var(--primary);
  color: #fff;
  padding: 2px 8px;
  border-radius: 20px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

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

.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
  padding: 8px 2px;
  position: relative;
  transition: var(--transition);
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: width 0.3s ease;
}

.nav-links a:hover {
  color: var(--text);
}

.nav-links a:hover::after {
  width: 100%;
}

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

.nav-links a.active::after {
  width: 100%;
}

.nav-cta {
  background: var(--primary);
  color: #fff;
  padding: 10px 20px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  transition: var(--transition);
}

.nav-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(244, 63, 94, 0.3);
}

.nav-cta:focus-visible {
  outline: 3px solid rgba(244, 63, 94, 0.4);
  outline-offset: 2px;
}

.nav-toggle {
  display: none;
  font-size: 24px;
  color: var(--text);
  padding: 6px;
  border-radius: 8px;
}

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

/* ===== Article Hero ===== */
.article-hero {
  position: relative;
  padding: 100px 0 90px;
  background-size: cover;
  background-position: center;
  background-color: var(--dark);
}

.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(11, 11, 18, 0.92) 0%, rgba(11, 11, 18, 0.78) 60%, rgba(11, 11, 18, 0.64) 100%);
  z-index: 1;
}

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

.article-hero-inner {
  max-width: 820px;
  margin-inline: auto;
  text-align: center;
  color: #fff;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(244, 63, 94, 0.18);
  color: var(--secondary);
  border: 1px solid rgba(244, 63, 94, 0.4);
  padding: 6px 18px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 22px;
  backdrop-filter: blur(6px);
}

.article-hero h1 {
  font-size: clamp(30px, 5vw, 48px);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 20px;
  word-break: break-word;
}

.hero-meta {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 24px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
}

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

/* ===== Article Main ===== */
.article-section {
  background: var(--bg);
}

.article-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 48px;
  max-width: 860px;
  margin-inline: auto;
}

.article-meta-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 14px;
}

.article-category-tag {
  background: var(--bg);
  color: var(--primary);
  padding: 6px 14px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 13px;
}

.article-publish-time {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-body {
  font-size: 16.5px;
  line-height: 1.95;
  color: #2a2a35;
}

.article-body h2 {
  font-size: 26px;
  font-weight: 700;
  margin: 40px 0 16px;
  color: var(--text);
}

.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 28px 0 12px;
  color: var(--text);
}

.article-body h4 {
  font-size: 17px;
  font-weight: 600;
  margin: 20px 0 10px;
}

.article-body p {
  margin-bottom: 16px;
}

.article-body ul,
.article-body ol {
  margin: 0 0 16px 24px;
}

.article-body li {
  margin-bottom: 8px;
}

.article-body img {
  border-radius: var(--radius-md);
  margin: 24px 0;
  height: auto;
}

.article-body a {
  color: var(--primary);
  font-weight: 500;
}

.article-body a:hover {
  text-decoration: underline;
}

.article-body blockquote {
  border-left: 4px solid var(--primary);
  background: var(--bg);
  padding: 16px 24px;
  margin: 24px 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--text-muted);
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}

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

.article-body th {
  background: var(--bg);
  font-weight: 600;
}

.article-body code {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 14px;
}

/* ===== Not Found ===== */
.not-found {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  text-align: center;
  padding: 80px 40px;
  max-width: 680px;
  margin-inline: auto;
}

.not-found-icon {
  font-size: 56px;
  margin-bottom: 24px;
  color: var(--primary);
}

.not-found h2 {
  font-size: 28px;
  margin-bottom: 12px;
}

.not-found p {
  color: var(--text-muted);
  margin-bottom: 32px;
}

/* ===== Highlights ===== */
.highlights-section {
  background: var(--dark);
  color: #fff;
}

.highlights-section .section-head p {
  color: rgba(255, 255, 255, 0.55);
}

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

.highlight-card {
  background: var(--dark-card);
  border-radius: var(--radius-lg);
  padding: 36px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: var(--transition);
}

.highlight-card:hover {
  transform: translateY(-8px);
  border-color: rgba(244, 63, 94, 0.5);
  box-shadow: 0 12px 36px rgba(244, 63, 94, 0.18);
}

.highlight-icon {
  font-size: 40px;
  margin-bottom: 16px;
}

.highlight-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 10px;
}

.highlight-card p {
  color: rgba(255, 255, 255, 0.65);
  font-size: 14px;
  line-height: 1.8;
}

/* ===== Recommend ===== */
.recommend-section {
  background: var(--white);
}

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

.recommend-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
  display: block;
}

.recommend-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(244, 63, 94, 0.25);
}

.recommend-img {
  height: 200px;
  overflow: hidden;
}

.recommend-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.recommend-card:hover .recommend-img img {
  transform: scale(1.06);
}

.recommend-body {
  padding: 24px;
}

.card-tag {
  display: inline-block;
  background: var(--bg);
  color: var(--primary);
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
}

.recommend-body h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.recommend-body p {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

.card-link i {
  transition: transform 0.3s ease;
}

.recommend-card:hover .card-link i {
  transform: translateX(4px);
}

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

.cta-box {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 48px 56px;
  color: #fff;
  flex-wrap: wrap;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(244, 63, 94, 0.25);
}

.cta-box::before {
  content: '';
  position: absolute;
  right: -60px;
  top: -60px;
  width: 200px;
  height: 200px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
}

.cta-box::after {
  content: '';
  position: absolute;
  left: -30px;
  bottom: -80px;
  width: 180px;
  height: 180px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 50%;
}

.cta-content {
  position: relative;
  z-index: 1;
  flex: 1 1 320px;
}

.cta-content h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
}

.cta-content p {
  opacity: 0.88;
  font-size: 15px;
}

.cta-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.btn-light {
  background: #fff;
  color: var(--primary);
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-light:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.btn-outline-light {
  border: 1px solid rgba(255, 255, 255, 0.55);
  color: #fff;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

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

.faq-list {
  max-width: 760px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.faq-item[open] {
  box-shadow: var(--shadow-md);
  border-color: rgba(244, 63, 94, 0.3);
}

.faq-item summary {
  cursor: pointer;
  padding: 20px 24px;
  font-weight: 600;
  font-size: 16px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: var(--transition);
}

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

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

.faq-item summary::after {
  content: '+';
  font-size: 24px;
  color: var(--primary);
  transition: transform 0.3s ease;
  line-height: 1;
}

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

.faq-item p {
  padding: 0 24px 20px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.8;
}

/* ===== Footer ===== */
.footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.75);
  padding: 60px 0 24px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.fb-logo {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.55);
}

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

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

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

.footer-col ul li a:hover {
  color: var(--secondary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-top: 24px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
  flex-wrap: wrap;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .highlights-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .recommend-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .nav-links {
    gap: 20px;
  }
}

@media (max-width: 768px) {
  .topbar .container {
    height: auto;
    padding: 8px 0;
    flex-direction: column;
    gap: 4px;
  }
  .main-nav .nav-wrap {
    flex-wrap: wrap;
    min-height: 60px;
    padding: 10px 0;
  }
  .nav-toggle {
    display: block;
  }
  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0 16px;
  }
  .nav-links.open {
    display: flex;
  }
  .nav-links li {
    width: 100%;
  }
  .nav-links a {
    display: block;
    padding: 10px 8px;
    border-radius: 8px;
  }
  .nav-links a::after {
    display: none;
  }
  .nav-links a.active {
    background: rgba(244, 63, 94, 0.08);
  }
  .nav-cta {
    margin-left: auto;
  }
  .article-hero {
    padding: 70px 0 60px;
  }
  .article-card {
    padding: 32px 24px;
  }
  .section {
    padding: 60px 0;
  }
  .cta-box {
    padding: 36px 28px;
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 8px;
  }
}

@media (max-width: 520px) {
  .highlights-grid {
    grid-template-columns: 1fr;
  }
  .recommend-grid {
    grid-template-columns: 1fr;
  }
  .topbar-right {
    font-size: 12px;
  }
  .topbar-right span:first-child {
    display: none;
  }
  .logo {
    font-size: 20px;
  }
  .logo-badge {
    font-size: 10px;
  }
  .article-hero h1 {
    font-size: 26px;
  }
  .article-card {
    padding: 24px 18px;
    border-radius: 16px;
  }
  .article-body {
    font-size: 15px;
  }
  .cta-content h2 {
    font-size: 22px;
  }
  .cta-actions .btn-light,
  .cta-actions .btn-outline-light {
    width: 100%;
    justify-content: center;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

/* roulang page: category2 */
:root {
            --primary: #6c5ce7;
            --primary-dark: #5a4bd1;
            --primary-light: #a29bfe;
            --secondary: #fd9644;
            --accent: #00cec9;
            --dark: #171722;
            --dark-2: #22223a;
            --bg: #f8f7fc;
            --bg-light: #ffffff;
            --text: #2d2d3a;
            --text-weak: #6b6b7d;
            --border: #e8e6f2;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.12);
            --transition: all 0.3s ease;
            --container: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: var(--transition);
        }

        input,
        textarea {
            font-family: inherit;
        }

        ul {
            list-style: none;
        }

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

        /* ===== 顶部信息条 ===== */
        .topbar {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.85);
            font-size: 13px;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .topbar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .topbar-left,
        .topbar-right {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .topbar a {
            color: var(--secondary);
            font-weight: 600;
        }

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

        /* ===== 主导航 ===== */
        .main-nav {
            background: var(--bg-light);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            height: 70px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--primary);
            white-space: nowrap;
        }

        .logo .logo-badge {
            font-size: 11px;
            background: linear-gradient(135deg, var(--secondary), #ff7675);
            color: #fff;
            padding: 2px 8px;
            border-radius: 20px;
            font-weight: 600;
            letter-spacing: 1px;
            transform: translateY(-2px);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
        }

        .nav-links a {
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
        }

        .nav-links a:hover {
            background: rgba(108, 92, 231, 0.08);
            color: var(--primary);
        }

        .nav-links a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(108, 92, 231, 0.35);
        }

        .nav-cta {
            background: linear-gradient(135deg, var(--secondary), #ff7675);
            color: #fff;
            padding: 10px 20px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 700;
            white-space: nowrap;
            box-shadow: 0 4px 14px rgba(253, 150, 68, 0.35);
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(253, 150, 68, 0.45);
        }

        .nav-toggle {
            display: none;
            font-size: 26px;
            color: var(--text);
            padding: 4px 8px;
            border-radius: 8px;
        }

        .nav-toggle:hover {
            background: rgba(0, 0, 0, 0.06);
        }

        /* ===== Hero ===== */
        .page-hero {
            position: relative;
            padding: 100px 0 90px;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            color: #fff;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(23, 23, 34, 0.92), rgba(60, 45, 120, 0.82), rgba(0, 0, 0, 0.55));
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 700;
            letter-spacing: 1px;
            margin-bottom: 24px;
        }

        .page-hero h1 {
            font-size: 46px;
            line-height: 1.2;
            font-weight: 800;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .page-hero p {
            font-size: 18px;
            line-height: 1.7;
            opacity: 0.92;
            margin-bottom: 32px;
            max-width: 600px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 36px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 30px;
            border-radius: 30px;
            font-size: 15px;
            font-weight: 700;
            transition: var(--transition);
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--secondary), #ff7675);
            color: #fff;
            box-shadow: 0 6px 20px rgba(253, 150, 68, 0.4);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(253, 150, 68, 0.5);
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.4);
            color: #fff;
            backdrop-filter: blur(4px);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
        }

        .btn-light {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
        }

        .btn-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(0, 0, 0, 0.15);
        }

        .hero-meta {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            font-size: 14px;
            opacity: 0.85;
        }

        .hero-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            padding: 60px 0;
            background: var(--bg-light);
            border-bottom: 1px solid var(--border);
        }

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

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

        .stat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }

        .stat-num {
            font-size: 44px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
            margin-bottom: 8px;
        }

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

        /* ===== 栏目优势 ===== */
        .section-head {
            text-align: center;
            max-width: 620px;
            margin: 0 auto 50px;
        }

        .section-tag {
            display: inline-block;
            background: rgba(108, 92, 231, 0.1);
            color: var(--primary);
            padding: 5px 16px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

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

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

        .section-head.light-text h2 {
            color: #fff;
        }

        .section-head.light-text p {
            color: rgba(255, 255, 255, 0.75);
        }

        .features-section {
            padding: 80px 0;
            background: var(--bg);
        }

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

        .feature-card {
            background: var(--bg-light);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .feature-card img {
            width: 100%;
            height: 160px;
            object-fit: cover;
        }

        .feature-body {
            padding: 24px;
        }

        .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: rgba(108, 92, 231, 0.1);
            font-size: 22px;
            margin-bottom: 14px;
        }

        .feature-body h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .feature-body p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.65;
        }

        /* ===== 适用场景 ===== */
        .scenarios-section {
            padding: 80px 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .scenarios-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(23, 23, 34, 0.88);
        }

        .scenarios-section .container {
            position: relative;
            z-index: 2;
        }

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

        .scenario-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius);
            padding: 30px 24px;
            backdrop-filter: blur(6px);
            transition: var(--transition);
        }

        .scenario-card:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.25);
        }

        .scenario-num {
            font-size: 40px;
            font-weight: 800;
            color: rgba(255, 255, 255, 0.2);
            line-height: 1;
            margin-bottom: 16px;
            font-style: italic;
        }

        .scenario-card h3 {
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .scenario-card p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            line-height: 1.65;
        }

        /* ===== 高亮活动 ===== */
        .highlights-section {
            padding: 80px 0;
            background: var(--dark);
        }

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

        .highlight-card {
            background: var(--dark-2);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
        }

        .highlight-card:hover {
            transform: translateY(-6px);
            border-color: rgba(108, 92, 231, 0.5);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
        }

        .highlight-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .highlight-body {
            padding: 24px;
            position: relative;
        }

        .highlight-body .badge {
            display: inline-block;
            background: linear-gradient(135deg, var(--secondary), #ff7675);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 30px;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .highlight-body h3 {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .highlight-body p {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            line-height: 1.65;
            margin-bottom: 16px;
        }

        .highlight-body a {
            color: var(--accent);
            font-size: 14px;
            font-weight: 600;
        }

        .highlight-body a:hover {
            color: var(--secondary);
        }

        /* ===== 使用流程 ===== */
        .steps-section {
            padding: 80px 0;
            background: var(--bg-light);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            position: relative;
        }

        .step-card {
            text-align: center;
            padding: 30px 20px;
            position: relative;
        }

        .step-card::before {
            content: '';
            position: absolute;
            top: 35px;
            right: -40px;
            width: 80px;
            height: 2px;
            background: linear-gradient(to right, var(--primary-light), var(--accent));
            opacity: 0.3;
        }

        .step-card:last-child::before {
            display: none;
        }

        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 20px;
            box-shadow: 0 8px 24px rgba(108, 92, 231, 0.3);
        }

        .step-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.65;
            max-width: 260px;
            margin: 0 auto;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 80px 0;
            background: var(--bg);
        }

        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }

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

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

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

        .faq-question i {
            font-style: normal;
            font-size: 20px;
            color: var(--text-weak);
            transition: var(--transition);
            flex-shrink: 0;
            margin-left: 16px;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .faq-answer p {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 40px 0 80px;
            background: var(--bg);
        }

        .cta-box {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 24px;
            padding: 56px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
        }

        .cta-box::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -40px;
            width: 180px;
            height: 180px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
        }

        .cta-box h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
            position: relative;
            z-index: 2;
        }

        .cta-box p {
            font-size: 16px;
            opacity: 0.9;
            margin-bottom: 30px;
            position: relative;
            z-index: 2;
        }

        .cta-box .btn {
            position: relative;
            z-index: 2;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 24px;
            border-top: 3px solid var(--primary);
        }

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

        .footer-brand .fb-logo {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            max-width: 320px;
        }

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

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

        .footer-col ul a:hover {
            color: var(--secondary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

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

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

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 108px;
                left: 0;
                right: 0;
                background: var(--bg-light);
                flex-direction: column;
                padding: 20px;
                gap: 4px;
                box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.4s ease, padding 0.4s ease;
                border-bottom: 1px solid var(--border);
                z-index: 99;
            }

            .nav-links.open {
                max-height: 400px;
                padding: 20px;
            }

            .nav-links a {
                display: block;
                text-align: center;
                padding: 12px 16px;
            }

            .nav-cta {
                display: none;
            }

            .nav-toggle {
                display: block;
            }

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

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

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

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

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

            .step-card::before {
                display: none;
            }

            .cta-box {
                padding: 40px 24px;
            }

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

            .footer-top {
                grid-template-columns: 1fr;
                gap: 30px;
            }

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

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

            .features-grid,
            .scenarios-grid,
            .stats-grid,
            .highlights-grid {
                grid-template-columns: 1fr;
            }

            .hero-inner {
                padding: 0 8px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .btn {
                justify-content: center;
            }

            .topbar .container {
                justify-content: center;
                text-align: center;
            }

            .topbar-right {
                display: none;
            }

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

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

            .stats-grid {
                gap: 14px;
            }

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

            .stat-num {
                font-size: 34px;
            }
        }