/* roulang page: index */
:root {
  --primary: #152a4a;
  --primary-2: #1e3a5f;
  --accent: #d4a94e;
  --accent-2: #b78c33;
  --accent-bg: rgba(212,169,78,0.12);
  --bg: #f4f6f9;
  --surface: #ffffff;
  --text: #1b2a38;
  --text-weak: #5c6b7a;
  --border: #e5e9f0;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-pill: 40px;
  --shadow-sm: 0 2px 12px rgba(21,42,74,0.06);
  --shadow: 0 8px 30px rgba(21,42,74,0.08);
  --shadow-lg: 0 20px 50px rgba(21,42,74,0.14);
  --section-gap: 90px;
}
* { 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: 1.65; color: var(--text); background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: color 0.25s ease; }
button { font-family: inherit; cursor: pointer; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(244,246,249,0.92);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  padding: 14px 0;
  transition: box-shadow 0.3s ease, border-color 0.3s ease;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled { box-shadow: 0 4px 20px rgba(21,42,74,0.08); border-bottom-color: var(--border); }
.nav-panel {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--surface); border-radius: 50px;
  padding: 8px 8px 8px 26px;
  box-shadow: var(--shadow-sm); border: 1px solid var(--border); gap: 16px;
}
.logo a {
  display: flex; align-items: center;
  font-size: 1.12rem; font-weight: 700; color: var(--primary);
  letter-spacing: 0.2px; white-space: nowrap; line-height: 1.2;
}
.logo-dot {
  display: inline-block; width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent); margin-right: 10px;
  box-shadow: 0 0 0 4px rgba(212,169,78,0.2); flex-shrink: 0;
}
.nav-links { display: flex; gap: 4px; align-items: center; flex: 1; justify-content: center; }
.nav-links a {
  padding: 10px 20px; border-radius: 30px; font-size: 0.9rem; font-weight: 500;
  color: var(--text); transition: all 0.25s ease; white-space: nowrap;
}
.nav-links a:hover { background: var(--accent-bg); color: var(--accent-2); }
.nav-links a.active { background: var(--primary); color: #fff; font-weight: 600; }
.nav-cta { flex-shrink: 0; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 28px; border-radius: var(--radius-pill); font-size: 0.92rem;
  font-weight: 600; letter-spacing: 0.3px; transition: all 0.3s ease;
  border: 2px solid transparent; line-height: 1.3;
}
.btn-primary { background: var(--accent); color: var(--primary); }
.btn-primary:hover { background: var(--accent-2); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(183,140,51,0.3); }
.btn-outline { border-color: rgba(255,255,255,0.7); color: #fff; }
.btn-outline:hover { background: #fff; color: var(--primary); transform: translateY(-2px); }
.btn-secondary { background: var(--primary); color: #fff; }
.btn-secondary:hover { background: var(--primary-2); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(30,58,95,0.3); }
.menu-toggle {
  display: none; background: none; border: none; font-size: 1.3rem; color: var(--primary);
  cursor: pointer; padding: 10px 14px; border-radius: 50%; transition: background 0.25s ease;
}
.menu-toggle:hover { background: var(--bg); }

/* Hero */
.hero {
  position: relative;
  padding: 110px 0 90px;
  background: linear-gradient(135deg, rgba(21,42,74,0.95) 0%, rgba(30,58,95,0.85) 50%, rgba(21,42,74,0.93) 100%),
              url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color: #fff; overflow: hidden;
}
.hero::after {
  content: ''; position: absolute; bottom: -120px; right: -80px; width: 400px; height: 400px;
  border-radius: 50%; background: rgba(212,169,78,0.12); filter: blur(60px); pointer-events: none;
}
.hero-inner { position: relative; z-index: 2; display: flex; flex-direction: column; align-items: center; text-align: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.2);
  padding: 8px 20px; border-radius: 40px; font-size: 0.82rem; font-weight: 500;
  letter-spacing: 0.5px; margin-bottom: 24px; backdrop-filter: blur(6px);
}
.hero-badge i { color: var(--accent); }
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem); font-weight: 800; line-height: 1.15;
  margin-bottom: 18px; letter-spacing: -0.5px;
}
.hero h1 span { color: var(--accent); }
.hero-sub { font-size: 1.15rem; color: rgba(255,255,255,0.8); max-width: 640px; margin-bottom: 36px; line-height: 1.6; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; margin-bottom: 48px; }
.hero-stats {
  display: flex; gap: 48px; flex-wrap: wrap; justify-content: center;
  padding-top: 36px; border-top: 1px solid rgba(255,255,255,0.15); width: 100%; max-width: 720px;
}
.hero-stat { text-align: center; flex: 1; min-width: 100px; }
.hero-stat .num { font-size: 1.8rem; font-weight: 800; color: var(--accent); display: block; line-height: 1.2; }
.hero-stat .label { font-size: 0.85rem; color: rgba(255,255,255,0.7); margin-top: 4px; }

/* Sections */
.section { padding: var(--section-gap) 0; }
.section-white { background: var(--surface); }
.section-gray { background: var(--bg); }
.section-dark { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%); color: #fff; }
.section-head { text-align: center; max-width: 700px; margin: 0 auto 48px; }
.section-tag {
  display: inline-block; padding: 6px 16px; border-radius: 20px;
  background: var(--accent-bg); color: var(--accent-2); font-size: 0.78rem;
  font-weight: 700; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 14px;
}
.section-head h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; color: var(--primary); margin-bottom: 12px; line-height: 1.3; }
.section-head p { color: var(--text-weak); font-size: 1rem; line-height: 1.7; }

/* Feature Cards */
.feature-card {
  background: var(--surface); border-radius: var(--radius); padding: 32px 28px; height: 100%;
  box-shadow: var(--shadow-sm); border: 1px solid var(--border);
  transition: all 0.35s ease; position: relative; overflow: hidden;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.feature-icon {
  width: 72px; height: 72px; border-radius: 20px; overflow: hidden;
  margin-bottom: 20px; box-shadow: 0 4px 14px rgba(21,42,74,0.1);
}
.feature-icon img { width: 100%; height: 100%; object-fit: cover; }
.feature-card h3 { font-size: 1.12rem; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
.feature-card p { font-size: 0.92rem; color: var(--text-weak); line-height: 1.65; }

/* Category Cards */
.category-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.category-card {
  position: relative; border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-sm); height: 320px; display: block;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.category-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.category-card:hover img { transform: scale(1.05); }
.category-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(21,42,74,0.88) 0%, rgba(21,42,74,0.3) 60%, rgba(21,42,74,0.1) 100%);
  display: flex; flex-direction: column; justify-content: flex-end; padding: 32px; color: #fff;
}
.category-overlay h3 { font-size: 1.5rem; font-weight: 700; margin-bottom: 8px; }
.category-overlay p { font-size: 0.9rem; opacity: 0.85; line-height: 1.6; margin-bottom: 16px; }
.category-link { display: inline-flex; align-items: center; gap: 8px; font-size: 0.9rem; font-weight: 600; color: var(--accent); }
.category-link i { transition: transform 0.3s ease; }
.category-card:hover .category-link i { transform: translateX(4px); }

/* News Cards */
.news-card {
  background: var(--surface); border-radius: var(--radius-sm); padding: 24px; height: 100%;
  border: 1px solid var(--border); border-left-width: 4px; border-left-color: var(--accent);
  box-shadow: var(--shadow-sm); transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.news-card .tag {
  display: inline-block; padding: 3px 12px; border-radius: 16px;
  background: var(--accent-bg); color: var(--accent-2); font-size: 0.75rem; font-weight: 600; margin-bottom: 12px;
}
.news-card h3 { font-size: 1rem; font-weight: 700; line-height: 1.5; margin-bottom: 8px; }
.news-card h3 a { color: var(--text); transition: color 0.25s ease; }
.news-card h3 a:hover { color: var(--accent-2); }
.news-card p {
  font-size: 0.86rem; color: var(--text-weak); line-height: 1.6; margin-bottom: 12px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-card time { font-size: 0.78rem; color: var(--text-weak); display: flex; align-items: center; gap: 6px; }
.news-card time i { color: var(--accent); }
.empty-tip {
  text-align: center; padding: 40px; color: var(--text-weak);
  background: var(--surface); border-radius: var(--radius); border: 1px dashed var(--border); width: 100%;
}

/* Stats */
.stats-wrap { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; text-align: center; }
.stat-item {
  background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius); padding: 34px 20px; backdrop-filter: blur(8px);
  transition: transform 0.3s ease, background 0.3s ease;
}
.stat-item:hover { transform: translateY(-4px); background: rgba(255,255,255,0.1); }
.stat-item .num { font-size: 2rem; font-weight: 800; color: var(--accent); display: block; line-height: 1.2; margin-bottom: 6px; }
.stat-item .label { font-size: 0.85rem; color: rgba(255,255,255,0.75); }

/* Process */
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.process-grid::before {
  content: ''; position: absolute; top: 42px; left: 8%; right: 8%; height: 2px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--border) 100%); z-index: 0;
}
.process-item {
  text-align: center; position: relative; z-index: 1;
  background: var(--surface); border-radius: var(--radius); padding: 32px 20px;
  box-shadow: var(--shadow-sm); border: 1px solid var(--border); transition: all 0.3s ease;
}
.process-item:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.process-num {
  width: 48px; height: 48px; border-radius: 50%; background: var(--primary); color: #fff;
  font-weight: 700; font-size: 1.1rem; display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px; box-shadow: 0 4px 12px rgba(21,42,74,0.25); position: relative;
}
.process-item h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; color: var(--primary); }
.process-item p { font-size: 0.85rem; color: var(--text-weak); line-height: 1.6; }

/* FAQ */
.faq-wrap { max-width: 760px; margin: 0 auto; }
.faq-item {
  background: var(--surface); border-radius: var(--radius-sm); border: 1px solid var(--border);
  margin-bottom: 14px; overflow: hidden; transition: box-shadow 0.3s ease;
}
.faq-item.open { box-shadow: var(--shadow-sm); border-color: var(--accent); }
.faq-q {
  width: 100%; display: flex; justify-content: space-between; align-items: center;
  padding: 20px 24px; text-align: left; font-size: 1rem; font-weight: 600;
  color: var(--text); background: var(--surface); transition: color 0.25s ease;
}
.faq-q:hover { color: var(--accent-2); }
.faq-q i { transition: transform 0.3s ease; color: var(--accent); flex-shrink: 0; }
.faq-item.open .faq-q i { transform: rotate(180deg); }
.faq-a {
  max-height: 0; overflow: hidden; padding: 0 24px;
  transition: max-height 0.35s ease, padding 0.35s ease;
  color: var(--text-weak); font-size: 0.92rem; line-height: 1.7;
}
.faq-item.open .faq-a { padding: 0 24px 20px; max-height: 300px; }

/* CTA */
.cta-section {
  position: relative;
  background: linear-gradient(120deg, rgba(21,42,74,0.92), rgba(30,58,95,0.88)),
              url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding: 90px 0; text-align: center; color: #fff;
}
.cta-section h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); font-weight: 800; margin-bottom: 16px; }
.cta-section p { max-width: 560px; margin: 0 auto 32px; color: rgba(255,255,255,0.8); font-size: 1rem; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* Footer */
.site-footer { background: var(--primary); color: rgba(255,255,255,0.75); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; padding-bottom: 40px; }
.footer-brand .logo { margin-bottom: 14px; }
.footer-brand .logo a { font-size: 1.2rem; font-weight: 700; color: #fff; display: flex; align-items: center; }
.footer-brand .logo .logo-dot { box-shadow: 0 0 0 4px rgba(212,169,78,0.15); }
.footer-brand p { font-size: 0.86rem; line-height: 1.7; opacity: 0.7; max-width: 300px; }
.footer-col h4 { font-size: 0.92rem; font-weight: 700; color: #fff; margin-bottom: 16px; letter-spacing: 0.5px; }
.footer-col a { display: block; padding: 5px 0; font-size: 0.86rem; opacity: 0.7; transition: opacity 0.25s ease, padding-left 0.25s ease; }
.footer-col a:hover { opacity: 1; padding-left: 4px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding: 20px 0; font-size: 0.82rem; text-align: center; opacity: 0.6; }

/* Responsive */
@media (max-width: 1024px) {
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid::before { display: none; }
  .stats-wrap { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  :root { --section-gap: 60px; }
  .nav-panel { flex-wrap: wrap; border-radius: 20px; }
  .nav-links {
    display: none; width: 100%; flex-direction: column; gap: 4px;
    padding: 10px 0; border-top: 1px solid var(--border); margin-top: 4px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { width: 100%; text-align: center; padding: 14px 20px; }
  .menu-toggle { display: block; }
  .nav-cta { margin-left: auto; }
  .nav-cta .btn { padding: 8px 16px; font-size: 0.82rem; }
  .hero { padding: 70px 0 60px; }
  .hero-stats { gap: 24px; }
  .hero-stat .num { font-size: 1.4rem; }
  .category-grid { grid-template-columns: 1fr; }
  .category-card { height: 260px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .section-head { margin-bottom: 30px; }
  .container { padding: 0 20px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .logo a { font-size: 0.88rem; }
  .logo-dot { width: 7px; height: 7px; margin-right: 7px; }
  .hero h1 { font-size: 2rem; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; }
  .stats-wrap { grid-template-columns: 1fr 1fr; gap: 14px; }
  .process-grid { grid-template-columns: 1fr; }
  .feature-card { padding: 24px 20px; }
  .hero-stat .num { font-size: 1.2rem; }
  .category-overlay { padding: 24px; }
  .faq-q { padding: 16px 18px; font-size: 0.93rem; }
  .faq-a { padding: 0 18px; }
  .faq-item.open .faq-a { padding: 0 18px 16px; }
  .btn { padding: 10px 22px; font-size: 0.85rem; }
}

/* roulang page: category1 */
:root {
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --primary-light: #eef2ff;
  --accent: #0ea5e9;
  --accent-soft: #f0f9ff;
  --success: #10b981;
  --warning: #f59e0b;
  --bg: #f8fafc;
  --bg-white: #ffffff;
  --bg-deep: #0f172a;
  --text: #1e293b;
  --text-soft: #64748b;
  --border: #e2e8f0;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.12);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

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

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

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

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

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

/* ===== 导航区域 ===== */
.site-header {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 12px rgba(15, 23, 42, 0.04);
}

.nav-panel {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 16px 0;
  flex-wrap: wrap;
}

.logo a {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.logo-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: inline-block;
  flex-shrink: 0;
  box-shadow: 0 0 12px rgba(79, 70, 229, 0.4);
}

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

.nav-links a {
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-soft);
  transition: var(--transition);
}

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

.nav-links a.active {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
}

.nav-cta {
  margin-left: auto;
}

.nav-cta .btn {
  white-space: nowrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  line-height: 1.4;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(79, 70, 229, 0.3);
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(79, 70, 229, 0.4);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--border);
  color: var(--text);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

.btn-light {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 4px 16px rgba(255, 255, 255, 0.2);
}

.btn-light:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
  transform: translateY(-2px);
}

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

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  color: var(--text);
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
}

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

/* ===== Hero 区域 ===== */
.page-hero {
  background: linear-gradient(135deg, var(--bg-deep) 0%, #1e293b 100%);
  color: #fff;
  padding: 80px 0 120px;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(79, 70, 229, 0.3) 0%, transparent 70%);
  pointer-events: none;
}

.page-hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.2) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 8px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: #e0e7ff;
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}

.hero-badge i {
  color: var(--accent);
}

.page-hero h1 {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #fff 0%, #c7d2fe 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-hero p {
  font-size: 18px;
  line-height: 1.8;
  color: #cbd5e1;
  margin-bottom: 32px;
  max-width: 640px;
}

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

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
  flex-wrap: wrap;
}

.hero-stats .stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.hero-stats .stat strong {
  font-size: 28px;
  font-weight: 800;
  color: #fff;
}

.hero-stats .stat span {
  font-size: 14px;
  color: #94a3b8;
}

/* ===== 面包屑 ===== */
.breadcrumb-wrap {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-soft);
}

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

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

.breadcrumb i {
  font-size: 12px;
  color: #cbd5e1;
}

.breadcrumb .current {
  color: var(--primary);
  font-weight: 600;
}

/* ===== 入口方式板块 ===== */
.section {
  padding: 100px 0;
}

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

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 64px;
}

.section-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 999px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: var(--text);
}

.section-header p {
  font-size: 17px;
  color: var(--text-soft);
  line-height: 1.8;
}

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

.entry-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 40px 32px;
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.entry-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: var(--transition);
}

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

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

.entry-icon {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 24px;
  background: var(--primary-light);
  color: var(--primary);
}

.entry-card:nth-child(2) .entry-icon {
  background: var(--accent-soft);
  color: var(--accent);
}

.entry-card:nth-child(3) .entry-icon {
  background: #ecfdf5;
  color: var(--success);
}

.entry-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}

.entry-card p {
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 20px;
}

.entry-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--bg);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-soft);
  border: 1px solid var(--border);
}

/* ===== 访问流程 ===== */
.flow-section {
  background: linear-gradient(135deg, #f8fafc 0%, #eef2ff 100%);
}

.flow-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  counter-reset: step;
}

.flow-item {
  text-align: center;
  position: relative;
  padding: 32px 24px;
  background: var(--bg-white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
}

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

.flow-item::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  width: 36px;
  height: 36px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.35);
}

.flow-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: var(--primary-light);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--primary);
}

.flow-item h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.flow-item p {
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ===== 安全提示 ===== */
.security-section {
  background: var(--bg-deep);
  color: #fff;
}

.security-section .section-header h2 {
  color: #fff;
}

.security-section .section-header p {
  color: #94a3b8;
}

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

.security-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: var(--transition);
  backdrop-filter: blur(4px);
}

.security-card:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.2);
}

.security-card .sec-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: rgba(79, 70, 229, 0.3);
  color: #a5b4fc;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 20px;
}

.security-card:nth-child(2) .sec-icon {
  background: rgba(14, 165, 233, 0.3);
  color: #7dd3fc;
}

.security-card:nth-child(3) .sec-icon {
  background: rgba(16, 185, 129, 0.3);
  color: #6ee7b7;
}

.security-card h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  color: #fff;
}

.security-card p {
  font-size: 15px;
  color: #94a3b8;
  line-height: 1.8;
  margin-bottom: 0;
}

/* ===== 快捷入口面板 ===== */
.panel-section {
  background: var(--bg-white);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.quick-panel {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  border-radius: 24px;
  padding: 48px 40px;
  display: flex;
  align-items: center;
  gap: 48px;
  box-shadow: 0 16px 48px rgba(79, 70, 229, 0.3);
  overflow: hidden;
  position: relative;
}

.quick-panel::after {
  content: '';
  position: absolute;
  top: -60%;
  right: -10%;
  width: 300px;
  height: 300px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
}

.quick-info {
  flex: 1;
  color: #fff;
  position: relative;
  z-index: 2;
}

.quick-info h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
}

.quick-info p {
  font-size: 15px;
  opacity: 0.9;
  margin-bottom: 0;
}

.quick-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  position: relative;
  z-index: 2;
}

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

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

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

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 28px;
  cursor: pointer;
  font-weight: 600;
  font-size: 17px;
  color: var(--text);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  transition: var(--transition);
}

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

.faq-question i {
  font-size: 16px;
  color: var(--primary);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-question i {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 28px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
  padding: 0 28px 24px;
  max-height: 300px;
}

.faq-answer p {
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 12px;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.faq-answer ul {
  color: var(--text-soft);
  font-size: 15px;
  padding-left: 20px;
  margin-bottom: 12px;
}

.faq-answer ul li {
  margin-bottom: 6px;
}

/* ===== CTA 区域 ===== */
.cta-section {
  background: var(--bg-deep);
  color: #fff;
  text-align: center;
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(79, 70, 229, 0.2) 0%, transparent 70%);
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.cta-content p {
  font-size: 17px;
  color: #94a3b8;
  margin-bottom: 32px;
  line-height: 1.8;
}

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

/* ===== 页脚 ===== */
.site-footer {
  background: var(--bg-white);
  border-top: 1px solid var(--border);
  padding: 64px 0 32px;
}

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

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

.footer-brand p {
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.8;
  max-width: 360px;
  margin-bottom: 0;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary-light);
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--text-soft);
  padding: 6px 0;
  transition: var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom span,
.footer-bottom a {
  font-size: 13px;
  color: #94a3b8;
}

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

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

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

  .page-hero h1 {
    font-size: 40px;
  }

  .quick-panel {
    flex-direction: column;
    gap: 32px;
    padding: 40px 32px;
  }
}

@media screen and (max-width: 768px) {
  .nav-panel {
    padding: 12px 0;
    gap: 12px;
  }

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

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-white);
    padding: 20px 24px;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    box-shadow: 0 16px 40px rgba(15, 23, 42, 0.1);
    border-bottom: 1px solid var(--border);
  }

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

  .nav-links a {
    padding: 14px 20px;
    border-radius: 12px;
    font-size: 16px;
  }

  .nav-cta {
    display: none;
  }

  .menu-toggle {
    display: block;
    margin-left: auto;
  }

  .page-hero {
    padding: 60px 0 80px;
  }

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

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

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

  .section {
    padding: 64px 0;
  }

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

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

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

  .quick-panel {
    padding: 32px 24px;
  }

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

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

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

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

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

  .hero-stats {
    gap: 24px;
  }

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

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

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

  .faq-question {
    font-size: 15px;
    padding: 20px;
  }

  .faq-answer {
    padding: 0 20px;
  }

  .faq-item.active .faq-answer {
    padding: 0 20px 20px;
  }

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

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

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

/* roulang page: article */
:root {
  --primary: #4f46e5;
  --primary-light: #818cf8;
  --primary-dark: #4338ca;
  --secondary: #06b6d4;
  --accent: #f59e0b;
  --bg: #f8fafc;
  --bg-deep: #0f172a;
  --card: #ffffff;
  --text: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.12);
  --transition: all 0.3s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; }

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

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.4;
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
  text-align: center;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 16px rgba(79, 70, 229, 0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(79, 70, 229, 0.45);
  color: #fff;
  filter: brightness(1.05);
}
.btn-light {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 4px 16px rgba(255, 255, 255, 0.2);
}
.btn-light:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(255, 255, 255, 0.35);
  color: var(--primary-dark);
}
.btn-outline-light {
  border-color: rgba(255,255,255,0.7);
  color: #fff;
}
.btn-outline-light:hover {
  background: rgba(255,255,255,0.12);
  color: #fff;
}
.btn-sm {
  padding: 8px 20px;
  font-size: 0.875rem;
}

/* ===== Header / 导航 ===== */
.site-header {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
}
.nav-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 20px;
}
.logo a {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: 0.5px;
}
.logo-dot {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: inline-block;
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
  flex-shrink: 0;
  position: relative;
}
.logo-dot::after {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 6px;
  background: rgba(255,255,255,0.25);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
}
.nav-links a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-muted);
  padding: 8px 2px;
  position: relative;
  letter-spacing: 0.3px;
}
.nav-links a:hover {
  color: var(--primary);
}
.nav-links a.active {
  color: var(--primary);
  font-weight: 600;
}
.nav-links a.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
}
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--bg);
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--text);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.menu-toggle:hover {
  background: #eef2ff;
  color: var(--primary);
}
.menu-toggle:focus {
  outline: 3px solid rgba(79, 70, 229, 0.25);
}

/* ===== 文章 Hero ===== */
.article-hero {
  position: relative;
  padding: 88px 0 64px;
  background: linear-gradient(135deg, #1e1b4b 0%, #0f172a 55%, #164e63 100%);
  overflow: hidden;
}
.article-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: 0.3;
  z-index: 1;
}
.article-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(30, 27, 75, 0.75), rgba(35, 92, 102, 0.35));
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  color: #fff;
  max-width: 860px;
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 22px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.75);
}
.breadcrumb a {
  color: rgba(255,255,255,0.85);
}
.breadcrumb a:hover {
  color: #fff;
  text-decoration: underline;
}
.breadcrumb-sep {
  color: rgba(255,255,255,0.4);
}
.breadcrumb-current {
  color: rgba(255,255,255,0.9);
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.hero-content h1 {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
  text-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.85);
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: rgba(255,255,255,0.12);
  padding: 6px 14px;
  border-radius: 30px;
  backdrop-filter: blur(8px);
}
.meta-item i {
  font-size: 0.9rem;
  color: var(--secondary);
}

/* ===== 文章主体 ===== */
.article-main {
  padding: 56px 0 72px;
  background: var(--bg);
}
.article-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 48px;
  border: 1px solid var(--border);
  min-height: 320px;
}

/* 文章正文排版 */
.article-content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: #334155;
}
.article-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  margin: 2.2rem 0 1rem;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border);
}
.article-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  margin: 1.8rem 0 0.8rem;
}
.article-content p {
  margin-bottom: 1.3rem;
}
.article-content img {
  border-radius: var(--radius);
  margin: 1.5rem 0;
  box-shadow: var(--shadow);
}
.article-content ul,
.article-content ol {
  margin: 0 0 1.4rem 1.5rem;
}
.article-content li {
  margin-bottom: 0.5rem;
}
.article-content blockquote {
  border-left: 4px solid var(--primary);
  background: #f8fafc;
  padding: 16px 24px;
  margin: 1.8rem 0;
  border-radius: 0 12px 12px 0;
  color: var(--text-muted);
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.925rem;
}
.article-content table th,
.article-content table td {
  padding: 12px 16px;
  border: 1px solid var(--border);
  text-align: left;
}
.article-content table th {
  background: #f8fafc;
  font-weight: 600;
  color: var(--text);
}
.article-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.article-content a:hover {
  color: var(--primary-dark);
}
.article-content code {
  background: #f1f5f9;
  padding: 2px 8px;
  border-radius: 6px;
  font-family: "SF Mono", "Consolas", "Liberation Mono", monospace;
  font-size: 0.875em;
  color: #be123c;
}

.not-found-box {
  text-align: center;
  padding: 80px 20px;
}
.not-found-box i {
  font-size: 4rem;
  color: var(--primary-light);
  margin-bottom: 24px;
  display: block;
}
.not-found-box h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.not-found-box p {
  color: var(--text-muted);
  margin-bottom: 28px;
}
.empty-hint {
  text-align: center;
  color: var(--text-muted);
  padding: 60px 20px;
  font-size: 1.05rem;
}

/* ===== 侧边栏 ===== */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: 90px;
}
.sidebar-card {
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 24px;
  transition: var(--transition);
}
.sidebar-card:hover {
  box-shadow: var(--shadow-lg);
}
.sidebar-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.sidebar-card h3::before {
  content: "";
  width: 4px;
  height: 18px;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--primary), var(--secondary));
}
.info-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.info-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-muted);
}
.info-list li i {
  color: var(--primary);
  width: 18px;
  text-align: center;
}
.service-card img {
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  object-fit: cover;
  width: 100%;
  height: 140px;
}
.service-card h3 {
  margin-bottom: 8px;
}
.service-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.nav-card a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--text);
}
.nav-card a:last-child {
  border-bottom: none;
}
.nav-card a:hover {
  color: var(--primary);
  padding-left: 6px;
}
.nav-card a i {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ===== 相关推荐 ===== */
.related-section {
  padding: 72px 0;
  background: linear-gradient(180deg, var(--bg) 0%, #f1f5f9 100%);
}
.section-head {
  text-align: center;
  margin-bottom: 44px;
}
.section-head h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 8px;
}
.section-head p {
  color: var(--text-muted);
  font-size: 1rem;
}
.related-card {
  display: flex;
  flex-direction: column;
  background: var(--card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  overflow: hidden;
  height: 100%;
  transition: var(--transition);
}
.related-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.related-img {
  position: relative;
  overflow: hidden;
  height: 180px;
}
.related-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.related-card:hover .related-img img {
  transform: scale(1.06);
}
.related-body {
  padding: 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 30px;
  background: #eef2ff;
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 12px;
  align-self: flex-start;
}
.related-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
  line-height: 1.4;
}
.related-body p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  flex: 1;
}
.related-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.related-link i {
  transition: transform 0.3s ease;
}
.related-card:hover .related-link i {
  transform: translateX(4px);
}

/* ===== FAQ ===== */
.faq-section {
  padding: 72px 0;
  background: var(--bg);
}
.faq-list {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
}
.faq-item:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-lg);
}
.faq-item summary {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: "\f078";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 0.8rem;
  color: var(--primary);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.faq-item[open] summary::after {
  transform: rotate(180deg);
}
.faq-item p {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  font-size: 0.925rem;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ===== CTA ===== */
.cta-section {
  padding: 72px 0;
  background: var(--bg-deep);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  opacity: 0.2;
}
.cta-box {
  position: relative;
  text-align: center;
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.9), rgba(6, 182, 212, 0.85));
  border-radius: var(--radius-lg);
  padding: 56px 40px;
  color: #fff;
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.3);
  max-width: 900px;
  margin: 0 auto;
}
.cta-box h2 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 12px;
}
.cta-box p {
  font-size: 1rem;
  color: rgba(255,255,255,0.85);
  margin-bottom: 28px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-deep);
  color: rgba(255,255,255,0.75);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .logo a {
  color: #fff;
  font-size: 1.25rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.6);
  max-width: 360px;
}
.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
}
.footer-col a {
  display: block;
  padding: 6px 0;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}
.footer-col a:hover {
  color: #fff;
  padding-left: 6px;
}
.footer-bottom {
  padding: 24px 0;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .article-hero {
    padding: 64px 0 48px;
  }
  .hero-content h1 {
    font-size: 2rem;
  }
  .article-card {
    padding: 32px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: calc(100% + 0px);
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px 24px;
    box-shadow: 0 16px 40px rgba(15, 23, 42, 0.12);
    border-bottom: 1px solid var(--border);
    gap: 0;
  }
  .nav-links.open {
    display: flex;
  }
  .nav-links a {
    padding: 14px 8px;
    border-bottom: 1px solid var(--border);
    font-size: 1rem;
  }
  .nav-links a.active::after {
    display: none;
  }
  .nav-links a.active {
    background: #eef2ff;
    border-radius: var(--radius-sm);
    padding-left: 14px;
  }
  .menu-toggle {
    display: flex;
  }
  .nav-cta {
    display: none;
  }
  .article-main {
    padding: 40px 0 56px;
  }
  .article-card {
    padding: 24px;
    border-radius: var(--radius);
  }
  .article-sidebar {
    position: static;
    margin-top: 32px;
  }
  .hero-content h1 {
    font-size: 1.6rem;
  }
  .related-section,
  .faq-section,
  .cta-section {
    padding: 48px 0;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .cta-box {
    padding: 40px 24px;
  }
  .cta-box h2 {
    font-size: 1.4rem;
  }
  .breadcrumb-current {
    max-width: 180px;
  }
}

@media (max-width: 520px) {
  .container,
  .grid-container {
    padding: 0 16px !important;
  }
  .logo a {
    font-size: 1.05rem;
  }
  .article-hero {
    padding: 48px 0 36px;
  }
  .hero-content h1 {
    font-size: 1.4rem;
  }
  .article-card {
    padding: 16px;
  }
  .article-content {
    font-size: 0.975rem;
  }
  .article-content h2 {
    font-size: 1.2rem;
  }
  .cta-box {
    padding: 28px 20px;
  }
  .cta-box h2 {
    font-size: 1.2rem;
  }
  .related-card .related-body h3 {
    font-size: 0.95rem;
  }
}

/* ===== 焦点可见性 ===== */
a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(79, 70, 229, 0.35);
  outline-offset: 2px;
  border-radius: 6px;
}

/* roulang page: category2 */
/* ===== 开云app官方入口网页版 · 服务特色页面设计系统 ===== */
        :root {
            --primary: #4361ee;
            --primary-dark: #3a56d4;
            --primary-light: #eef0ff;
            --secondary: #7209b7;
            --accent: #f72585;
            --success: #06d6a0;
            --warning: #ffb703;
            --bg-light: #f0f4ff;
            --bg-white: #ffffff;
            --bg-dark: #141832;
            --text-main: #1e2235;
            --text-sub: #5b6277;
            --text-light: #8a90a5;
            --border: #e4e9f2;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(67, 97, 238, 0.08);
            --shadow-hover: 0 16px 40px rgba(67, 97, 238, 0.16);
            --shadow-card: 0 2px 16px rgba(0, 0, 0, 0.05);
            --transition: all 0.3s ease;
            --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        ul,
        ol {
            list-style: none;
        }
        button {
            background: none;
            border: none;
            cursor: pointer;
            font-family: var(--font);
        }
        input,
        textarea,
        select {
            font-family: var(--font);
        }

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

        section {
            padding: 90px 0;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 30px;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }
        .section-label i {
            font-size: 14px;
        }

        .section-title {
            font-size: 36px;
            line-height: 1.25;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .section-subtitle {
            font-size: 17px;
            color: var(--text-sub);
            line-height: 1.7;
            max-width: 640px;
        }

        .text-center {
            text-align: center;
        }
        .text-center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Header & 卡片化导航面板 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            padding: 14px 0;
            border-bottom: 1px solid rgba(228, 233, 242, 0.7);
        }
        .nav-panel {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            background: var(--bg-light);
            border-radius: 20px;
            padding: 10px 14px 10px 22px;
            border: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            transition: var(--transition);
        }
        .nav-panel:hover {
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.06);
        }
        .logo {
            display: flex;
            align-items: center;
            flex-shrink: 0;
        }
        .logo a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            text-decoration: none;
            letter-spacing: -0.3px;
            line-height: 1.3;
        }
        .logo-dot {
            width: 32px;
            height: 32px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: inline-block;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(67, 97, 238, 0.35);
            position: relative;
        }
        .logo-dot::after {
            content: '';
            position: absolute;
            inset: 7px;
            background: #fff;
            border-radius: 7px;
            opacity: 0.9;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: auto;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 12px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-sub);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-links a i {
            font-size: 14px;
            opacity: 0.7;
        }
        .nav-links a:hover {
            background: #e8ecff;
            color: var(--primary);
            transform: translateY(-1px);
        }
        .nav-links a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 16px rgba(67, 97, 238, 0.3);
        }
        .nav-links a.active i {
            opacity: 1;
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 12px;
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
            cursor: pointer;
            text-decoration: none;
            white-space: nowrap;
            line-height: 1.4;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            border: none;
            box-shadow: 0 6px 20px rgba(67, 97, 238, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(67, 97, 238, 0.4);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-sub);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }
        .btn-lg {
            padding: 14px 32px;
            font-size: 16px;
            border-radius: 14px;
        }
        .menu-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 18px;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .menu-toggle:hover {
            background: var(--primary);
            color: #fff;
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 120px 0 100px;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(20, 24, 50, 0.85), rgba(67, 97, 238, 0.55), rgba(114, 9, 183, 0.35));
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .banner-content {
            max-width: 760px;
        }
        .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.18);
            border: 1px solid rgba(255, 255, 255, 0.3);
            backdrop-filter: blur(10px);
            color: #fff;
            font-size: 13px;
            font-weight: 500;
            padding: 6px 18px;
            border-radius: 30px;
            margin-bottom: 20px;
        }
        .banner-tag i {
            font-size: 14px;
        }
        .page-banner h1 {
            font-size: 48px;
            line-height: 1.2;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: -1px;
        }
        .page-banner p {
            font-size: 18px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 30px;
            max-width: 580px;
        }
        .banner-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .banner-actions .btn-primary {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }
        .banner-actions .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
        }
        .banner-actions .btn-outline {
            border-color: rgba(255, 255, 255, 0.6);
            color: #fff;
        }
        .banner-actions .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
        }
        .banner-bottom-wave {
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            line-height: 0;
        }

        /* ===== 特色总览 Intro Cards ===== */
        .intro-section {
            margin-top: -60px;
            position: relative;
            z-index: 5;
            padding-top: 0;
        }
        .intro-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .intro-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 32px 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .intro-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }
        .intro-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .intro-card:hover::before {
            opacity: 1;
        }
        .intro-icon {
            width: 60px;
            height: 60px;
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: #fff;
            margin-bottom: 20px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
        }
        .intro-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-main);
        }
        .intro-card p {
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        /* ===== 详细特色 Cards ===== */
        .features-section {
            background: var(--bg-white);
            position: relative;
        }
        .features-section::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(67, 97, 238, 0.06), transparent 70%);
            border-radius: 50%;
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 50px;
        }
        .feature-card {
            background: var(--bg-light);
            border-radius: var(--radius);
            padding: 30px 28px;
            border: 1px solid var(--border);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s ease;
        }
        .feature-card:hover {
            background: var(--bg-white);
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }
        .feature-card:hover::after {
            transform: scaleX(1);
        }
        .feature-card-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 18px;
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            background: var(--primary-light);
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .feature-tag {
            font-size: 12px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 20px;
            background: #fff;
            color: var(--text-sub);
            border: 1px solid var(--border);
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-main);
        }
        .feature-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-sub);
        }

        /* ===== 图文展示 + 数据 ===== */
        .showcase-section {
            background: var(--bg-light);
            overflow: hidden;
        }
        .showcase-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            margin-bottom: 80px;
        }
        .showcase-media {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .showcase-media img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .showcase-media:hover img {
            transform: scale(1.03);
        }
        .showcase-media::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, rgba(20, 24, 50, 0.4), transparent);
        }
        .showcase-badge {
            position: absolute;
            top: 20px;
            right: 20px;
            background: #fff;
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 30px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
            z-index: 2;
        }
        .showcase-content h3 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-main);
            line-height: 1.3;
        }
        .showcase-content p {
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.8;
            margin-bottom: 12px;
        }
        .showcase-list {
            margin-top: 16px;
        }
        .showcase-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 8px 0;
            font-size: 15px;
            color: var(--text-sub);
        }
        .showcase-list li i {
            color: var(--success);
            font-size: 16px;
            margin-top: 4px;
        }
        .showcase-list li strong {
            color: var(--text-main);
            font-weight: 600;
        }

        /* ===== 数据统计 ===== */
        .stats-wrap {
            background: linear-gradient(135deg, #1a1d29 0%, #141832 50%, #1e2240 100%);
            border-radius: var(--radius);
            padding: 50px 40px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
        }
        .stats-wrap::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(67, 97, 238, 0.3), transparent 70%);
        }
        .stat-item {
            text-align: center;
            position: relative;
            z-index: 2;
        }
        .stat-num {
            font-size: 44px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 6px;
            background: linear-gradient(135deg, #fff, #c5cbff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
        }

        /* ===== 服务流程 Steps ===== */
        .steps-section {
            background: var(--bg-white);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            margin-top: 50px;
            position: relative;
        }
        .steps-grid::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: var(--border);
            z-index: 1;
        }
        .step-item {
            position: relative;
            z-index: 2;
            text-align: center;
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 30px 20px;
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .step-num {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            font-size: 22px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            box-shadow: 0 8px 24px rgba(67, 97, 238, 0.3);
            position: relative;
        }
        .step-num::after {
            content: '';
            position: absolute;
            inset: 4px;
            border: 2px dashed rgba(255, 255, 255, 0.5);
            border-radius: 50%;
        }
        .step-item h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-light);
        }
        .faq-wrap {
            max-width: 800px;
            margin: 50px auto 0;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 28px 32px;
            margin-bottom: 12px;
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
        }
        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            line-height: 1.5;
        }
        .faq-question i {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
            transition: var(--transition);
        }
        .faq-item:hover .faq-question i {
            background: var(--primary);
            color: #fff;
        }
        .faq-answer {
            padding-left: 46px;
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.8;
            margin-top: 10px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #141832 0%, #1e2240 60%, #2b2f5a 100%);
            text-align: center;
            color: #fff;
            padding: 100px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -200px;
            left: -200px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(67, 97, 238, 0.4), transparent 70%);
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -200px;
            right: -200px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(247, 37, 133, 0.3), transparent 70%);
        }
        .cta-wrap {
            position: relative;
            z-index: 2;
        }
        .cta-title {
            font-size: 44px;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: -1px;
        }
        .cta-desc {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }
        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-buttons .btn-primary {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
        }
        .cta-buttons .btn-primary:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25);
            color: var(--primary);
            background: #f8f9ff;
        }
        .cta-buttons .btn-outline {
            border-color: rgba(255, 255, 255, 0.4);
            color: #fff;
        }
        .cta-buttons .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 70px 0 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 50px;
            margin-bottom: 50px;
        }
        .footer-brand .logo a {
            color: #fff;
        }
        .footer-brand .logo-dot {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
        }
        .footer-brand p {
            margin-top: 18px;
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 20px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: #fff;
            padding-left: 6px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== 响应式断点 ===== */
        @media screen and (max-width: 1024px) {
            section {
                padding: 70px 0;
            }
            .nav-panel {
                padding: 12px;
            }
            .nav-links {
                gap: 2px;
            }
            .nav-links a {
                padding: 7px 12px;
                font-size: 13px;
            }
            .nav-cta .btn {
                padding: 8px 16px;
                font-size: 13px;
            }
            .page-banner {
                padding: 100px 0 80px;
            }
            .page-banner h1 {
                font-size: 38px;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .showcase-wrap {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .stats-wrap {
                padding: 40px 24px;
                gap: 20px;
            }
            .stat-num {
                font-size: 36px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .steps-grid::before {
                display: none;
            }
            .cta-title {
                font-size: 36px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media screen and (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 28px;
            }
            .section-subtitle {
                font-size: 15px;
            }
            .site-header {
                padding: 10px 0;
            }
            .nav-panel {
                border-radius: 16px;
            }
            .nav-links {
                position: absolute;
                top: calc(100% + 8px);
                left: 0;
                right: 0;
                background: var(--bg-white);
                border: 1px solid var(--border);
                border-radius: 16px;
                box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
                display: none;
                flex-direction: column;
                align-items: stretch;
                padding: 12px;
                gap: 4px;
                margin: 0 16px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 12px 16px;
                font-size: 15px;
                border-radius: 10px;
                display: flex;
            }
            .nav-links a.active,
            .nav-links a:hover {
                background: var(--primary-light);
                color: var(--primary);
                box-shadow: none;
                transform: none;
            }
            .nav-cta {
                margin-left: auto;
            }
            .nav-cta .btn {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .page-banner {
                padding: 80px 0 60px;
            }
            .page-banner h1 {
                font-size: 30px;
            }
            .page-banner p {
                font-size: 16px;
            }
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .intro-section {
                margin-top: -40px;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
                margin-top: 30px;
            }
            .feature-card {
                padding: 22px 20px;
            }
            .showcase-media img {
                height: 260px;
            }
            .showcase-content h3 {
                font-size: 22px;
            }
            .stats-wrap {
                grid-template-columns: repeat(2, 1fr);
                padding: 30px 20px;
                gap: 24px 12px;
            }
            .stat-num {
                font-size: 30px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .faq-item {
                padding: 20px;
            }
            .faq-question {
                font-size: 15px;
            }
            .faq-answer {
                padding-left: 0;
            }
            .cta-title {
                font-size: 28px;
            }
            .cta-desc {
                font-size: 15px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-brand {
                grid-column: auto;
            }
            .footer-bottom {
                font-size: 12px;
            }
        }

        @media screen and (max-width: 520px) {
            .nav-panel {
                padding: 10px;
            }
            .logo a {
                font-size: 15px;
            }
            .logo-dot {
                width: 26px;
                height: 26px;
            }
            .page-banner h1 {
                font-size: 26px;
            }
            .page-banner p {
                font-size: 14px;
            }
            .banner-actions .btn {
                padding: 10px 18px;
                font-size: 13px;
            }
            .section-title {
                font-size: 24px;
            }
            .intro-card {
                padding: 24px 18px;
            }
            .stats-wrap {
                grid-template-columns: 1fr;
            }
            .stat-num {
                font-size: 35px;
            }
            .showcase-wrap {
                margin-bottom: 40px;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .cta-buttons .btn {
                width: 100%;
                max-width: 280px;
            }
            .footer-grid {
                gap: 24px;
            }
        }