/* roulang page: index */
:root {
  --primary: #0d47a1;
  --primary-light: #2f6dc4;
  --primary-dark: #0a2e6b;
  --accent: #ff8f00;
  --accent-light: #ffb300;
  --accent-dark: #f57c00;
  --bg: #f4f7fc;
  --bg-white: #ffffff;
  --bg-dark: #0f1d36;
  --text: #182233;
  --text-soft: #54657a;
  --text-light: #8a97a8;
  --border: #e2e8f2;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --shadow-xs: 0 2px 8px rgba(13, 71, 161, 0.05);
  --shadow-sm: 0 4px 18px rgba(13, 71, 161, 0.07);
  --shadow-md: 0 10px 32px rgba(13, 71, 161, 0.10);
  --shadow-lg: 0 20px 52px rgba(13, 71, 161, 0.15);
  --transition: all 0.32s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.7; -webkit-font-smoothing: antialiased; min-height: 100vh; }
img { max-width: 100%; display: block; height: auto; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-family: var(--font); line-height: 1.35; color: var(--text); }
.container { max-width: 1240px; margin: 0 auto; padding: 0 24px; width: 100%; }
.section { padding: 92px 0; position: relative; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-tag { display: inline-flex; align-items: center; gap: 8px; padding: 7px 20px; border-radius: 50px; background: rgba(13,71,161,0.08); color: var(--primary); font-size: 14px; font-weight: 600; letter-spacing: 1px; margin-bottom: 16px; }
.section-tag.section-tag-light { background: rgba(255,255,255,0.14); color: #fff; }
.section-head h2 { font-size: clamp(28px, 4vw, 40px); font-weight: 800; letter-spacing: -0.5px; margin-bottom: 14px; }
.section-head p { color: var(--text-soft); font-size: 17px; line-height: 1.8; }

/* Header + Navigation */
.topbar { background: var(--bg-dark); color: rgba(255,255,255,0.85); font-size: 13px; padding: 9px 0; }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.topbar-text { display: inline-flex; align-items: center; gap: 8px; }
.topbar-text i { color: var(--accent-light); }
.topbar-actions { display: flex; align-items: center; gap: 12px; }
.topbar-actions a { color: rgba(255,255,255,0.85); display: inline-flex; align-items: center; gap: 5px; }
.topbar-actions a:hover { color: var(--accent-light); }
.topbar-sep { color: rgba(255,255,255,0.25); }
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,0.92); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-bottom: 1px solid var(--border); box-shadow: var(--shadow-xs); }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; min-height: 74px; gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 21px; font-weight: 800; color: var(--primary); letter-spacing: -0.3px; }
.brand:hover { color: var(--primary-dark); }
.brand-icon { width: 40px; height: 40px; border-radius: 12px; background: linear-gradient(135deg, var(--primary), var(--primary-light)); display: inline-flex; align-items: center; justify-content: center; color: #fff; font-size: 18px; box-shadow: 0 6px 18px rgba(13,71,161,0.25); }
.main-nav { display: flex; align-items: center; gap: 8px; }
.main-nav > a { padding: 10px 20px; border-radius: 50px; font-size: 15px; font-weight: 500; color: var(--text-soft); position: relative; }
.main-nav > a:hover { color: var(--primary); background: rgba(13,71,161,0.06); }
.main-nav > a.active { color: var(--primary); font-weight: 700; background: rgba(13,71,161,0.1); }
.main-nav .nav-cta { background: var(--accent); color: #1a1a2e; font-weight: 700; padding: 10px 24px; border-radius: 50px; box-shadow: 0 6px 18px rgba(255,143,0,0.25); }
.main-nav .nav-cta:hover { background: var(--accent-dark); transform: translateY(-2px); color: #fff; box-shadow: 0 10px 26px rgba(255,143,0,0.35); }
.nav-toggle { display: none; width: 42px; height: 42px; border-radius: 10px; align-items: center; justify-content: center; background: rgba(13,71,161,0.08); color: var(--primary); font-size: 19px; }

/* Hero */
.hero { position: relative; background: linear-gradient(135deg, rgba(10,30,72,0.92), rgba(21,101,192,0.84)), url('/assets/images/backpic/back-1.png') center/cover no-repeat; padding: 130px 0 120px; color: #fff; margin-top: -1px; overflow: hidden; }
.hero::after { content: ''; position: absolute; right: -8%; bottom: -18%; width: 560px; height: 560px; border-radius: 50%; background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.08); pointer-events: none; }
.hero-inner { position: relative; z-index: 2; max-width: 880px; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.14); border: 1px solid rgba(255,255,255,0.22); padding: 7px 20px; border-radius: 50px; font-size: 14px; font-weight: 500; letter-spacing: 1px; margin-bottom: 26px; backdrop-filter: blur(6px); }
.hero-badge i { color: var(--accent-light); }
.hero h1 { font-size: clamp(34px, 6vw, 58px); font-weight: 900; color: #fff; letter-spacing: -1px; line-height: 1.18; margin-bottom: 20px; }
.hero h1 .highlight { color: var(--accent-light); }
.hero-desc { font-size: clamp(16px, 2.2vw, 20px); color: rgba(255,255,255,0.85); line-height: 1.85; max-width: 660px; margin-bottom: 38px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 14px 34px; border-radius: 50px; font-size: 16px; font-weight: 600; line-height: 1.5; transition: var(--transition); border: 2px solid transparent; }
.btn-primary { background: var(--accent); color: #1a1a2e; box-shadow: 0 8px 26px rgba(255,143,0,0.3); }
.btn-primary:hover { background: var(--accent-dark); color: #fff; transform: translateY(-3px); box-shadow: 0 14px 36px rgba(255,143,0,0.4); }
.btn-outline { border-color: rgba(255,255,255,0.7); color: #fff; background: transparent; }
.btn-outline:hover { background: rgba(255,255,255,0.12); border-color: #fff; transform: translateY(-3px); }
.btn-dark { background: var(--primary); color: #fff; border-color: var(--primary); box-shadow: 0 8px 24px rgba(13,71,161,0.25); }
.btn-dark:hover { background: var(--primary-dark); border-color: var(--primary-dark); transform: translateY(-3px); box-shadow: 0 14px 34px rgba(13,71,161,0.35); }
.hero-stats { display: flex; flex-wrap: wrap; gap: 34px; margin-top: 54px; padding-top: 32px; border-top: 1px solid rgba(255,255,255,0.18); }
.hero-stat b { display: block; font-size: 28px; font-weight: 800; color: #fff; }
.hero-stat span { font-size: 14px; color: rgba(255,255,255,0.65); }

/* Features */
.features { background: var(--bg;); }
.features { background: var(--bg); }
.feature-card { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 34px 26px; height: 100%; box-shadow: var(--shadow-sm); transition: var(--transition); position: relative; overflow: hidden; }
.feature-card::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 4px; background: linear-gradient(90deg, var(--primary), var(--accent)); opacity: 0; transition: var(--transition); }
.feature-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: rgba(13,71,161,0.2); }
.feature-card:hover::before { opacity: 1; }
.feature-icon { width: 62px; height: 62px; border-radius: 18px; background: linear-gradient(135deg, rgba(13,71,161,0.1), rgba(21,101,192,0.06)); display: flex; align-items: center; justify-content: center; font-size: 26px; color: var(--primary); margin-bottom: 22px; transition: var(--transition); }
.feature-card:hover .feature-icon { background: var(--primary); color: #fff; transform: scale(1.05); box-shadow: 0 10px 24px rgba(13,71,161,0.28); }
.feature-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 12px; }
.feature-card p { color: var(--text-soft); font-size: 15px; line-height: 1.75; }

/* Steps */
.steps-section { background: var(--bg-white); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.step-card { position: relative; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 38px 28px 30px; height: 100%; transition: var(--transition); z-index: 1; }
.step-card:hover { background: var(--bg-white); box-shadow: var(--shadow-md); transform: translateY(-6px); border-color: rgba(13,71,161,0.2); }
.step-num { font-size: 52px; font-weight: 900; color: rgba(13,71,161,0.1); line-height: 1; margin-bottom: 14px; transition: var(--transition); }
.step-card:hover .step-num { color: rgba(13,71,161,0.28); }
.step-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.step-card p { color: var(--text-soft); font-size: 15px; line-height: 1.75; }

/* Category Entry */
.category-entry { background: var(--bg); }
.category-entry-card { background: var(--bg-white); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); border: 1px solid var(--border); }
.category-entry-content { padding: 56px 46px; }
.category-entry-content h2 { font-size: 30px; font-weight: 800; margin: 14px 0; }
.category-entry-content p { color: var(--text-soft); font-size: 16px; line-height: 1.85; margin-bottom: 30px; }
.category-entry-img { height: 100%; min-height: 300px; position: relative; overflow: hidden; }
.category-entry-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.category-entry-card:hover .category-entry-img img { transform: scale(1.04); }
.category-entry-img::after { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(13,71,161,0.28), transparent 45%); }

/* News */
.news-section { background: var(--bg-white); }
.news-card { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 28px 24px; height: 100%; transition: var(--transition); box-shadow: var(--shadow-xs); display: flex; flex-direction: column; }
.news-card:hover { box-shadow: var(--shadow-md); transform: translateY(-5px); border-color: rgba(13,71,161,0.18); }
.news-card .news-cat { display: inline-block; width: fit-content; padding: 4px 14px; border-radius: 50px; background: rgba(13,71,161,0.08); color: var(--primary); font-size: 13px; font-weight: 600; margin-bottom: 16px; }
.news-card h3 { font-size: 18px; font-weight: 700; line-height: 1.5; margin-bottom: 10px; color: var(--text); }
.news-card h3 a:hover { color: var(--primary); }
.news-card p { color: var(--text-soft); font-size: 14px; line-height: 1.7; flex: 1; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.news-card time { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-light); }
.news-card time i { font-size: 14px; }
.empty-tip { background: var(--bg); border: 1px dashed var(--border); border-radius: var(--radius-md); padding: 42px 30px; text-align: center; color: var(--text-soft); font-size: 16px; grid-column: 1 / -1; }

/* Stats */
.stats-section { background: linear-gradient(115deg, rgba(13,71,161,0.93), rgba(10,46,107,0.95)), url('/assets/images/backpic/back-3.png') center/cover no-repeat; color: #fff; padding: 100px 0; position: relative; overflow: hidden; }
.stats-section .section-head h2 { color: #fff; }
.stats-section .section-head p { color: rgba(255,255,255,0.75); }
.stat-cell { text-align: center; padding: 24px 16px; position: relative; }
.stat-icon { width: 70px; height: 70px; border-radius: 20px; background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.2); display: inline-flex; align-items: center; justify-content: center; font-size: 30px; color: var(--accent-light); margin-bottom: 20px; backdrop-filter: blur(4px); }
.stat-num { font-size: 44px; font-weight: 900; color: #fff; line-height: 1.15; letter-spacing: -0.5px; }
.stat-num span { font-size: 22px; font-weight: 700; margin-left: 2px; }
.stat-label { font-size: 15px; color: rgba(255,255,255,0.72); margin-top: 6px; }

/* FAQ */
.faq-section { background: var(--bg); }
.faq-grid { display: flex; flex-direction: column; gap: 16px; max-width: 880px; margin: 0 auto; }
.faq-item { background: var(--bg-white); border-radius: var(--radius-md); border: 1px solid var(--border); overflow: hidden; transition: var(--transition); box-shadow: var(--shadow-xs); }
.faq-item:hover { border-color: rgba(13,71,161,0.25); box-shadow: var(--shadow-sm); }
.faq-item summary { padding: 22px 28px; cursor: pointer; font-weight: 600; font-size: 16px; color: var(--text); display: flex; align-items: center; justify-content: space-between; gap: 16px; list-style: none; user-select: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '\2b'; width: 30px; height: 30px; border-radius: 50%; background: rgba(13,71,161,0.08); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 18px; font-weight: 700; transition: var(--transition); flex-shrink: 0; font-family: "Font Awesome 6 Free"; content: '\2b'; }
.faq-item[open] { border-color: rgba(13,71,161,0.3); box-shadow: var(--shadow-md); }
.faq-item[open] summary { color: var(--primary); }
.faq-item[open] summary::after { background: var(--primary); color: #fff; content: '\f068'; font-weight: 900; transform: rotate(180deg); }
.faq-body { padding: 0 28px 24px; color: var(--text-soft); font-size: 15px; line-height: 1.85; border-top: 1px dashed var(--border); margin-top: 2px; padding-top: 18px; }

/* CTA */
.cta-section { background: linear-gradient(100deg, rgba(10,30,72,0.95), rgba(21,101,192,0.9)), url('/assets/images/backpic/back-2.png') center/cover no-repeat; color: #fff; padding: 86px 0; text-align: center; }
.cta-section h2 { color: #fff; font-size: clamp(26px, 4vw, 42px); font-weight: 800; margin-bottom: 14px; }
.cta-section p { color: rgba(255,255,255,0.8); font-size: 17px; max-width: 600px; margin: 0 auto 32px; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* Footer */
.site-footer { background: var(--bg-dark); color: rgba(255,255,255,0.75); padding: 70px 0 0; }
.footer-top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 50px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.footer-brand { font-size: 20px; font-weight: 800; color: #fff; margin-bottom: 16px; display: flex; align-items: center; gap: 10px; }
.footer-brand i { color: var(--accent-light); }
.footer-desc { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.6); max-width: 320px; }
.footer-title { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 20px; }
.footer-links li { margin-bottom: 11px; }
.footer-links a { font-size: 14px; color: rgba(255,255,255,0.6); display: inline-flex; align-items: center; gap: 8px; }
.footer-links a:hover { color: var(--accent-light); padding-left: 4px; }
.footer-links a i { font-size: 12px; color: var(--accent-light); }
.footer-contact li { margin-bottom: 14px; font-size: 14px; color: rgba(255,255,255,0.6); display: flex; align-items: flex-start; gap: 12px; }
.footer-contact li i { color: var(--accent-light); margin-top: 3px; }
.footer-bottom { padding: 24px 0; text-align: center; font-size: 14px; color: rgba(255,255,255,0.45); }
.footer-bottom a { color: rgba(255,255,255,0.6); }
.footer-bottom a:hover { color: var(--accent-light); }

/* Focus states */
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid rgba(255,143,0,0.65); outline-offset: 3px; border-radius: 6px; }
input:focus-visible, textarea:focus-visible { outline: 3px solid rgba(21,101,192,0.45); outline-offset: 2px; }

/* Responsive */
@media (max-width: 1024px) {
  .section { padding: 76px 0; }
  .hero { padding: 110px 0 90px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .topbar-inner { flex-direction: column; gap: 4px; padding: 4px 0; }
  .nav-toggle { display: flex; }
  .main-nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: #fff; flex-direction: column; padding: 18px 24px; box-shadow: var(--shadow-lg); border-top: 3px solid var(--primary); gap: 4px; z-index: 200; }
  .main-nav.open { display: flex; }
  .main-nav > a { width: 100%; text-align: center; font-size: 16px; padding: 14px 20px; }
  .main-nav .nav-cta { margin-top: 8px; }
  .hero { padding: 90px 0 70px; }
  .hero-actions .btn { width: 100%; }
  .hero-stats { gap: 22px; }
  .category-entry-content { padding: 36px 26px; }
  .category-entry-img { min-height: 220px; }
  .section-head { margin-bottom: 40px; }
  .stats-section { padding: 72px 0; }
  .stat-num { font-size: 36px; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .section { padding: 60px 0; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero h1 { font-size: 30px; }
  .hero-desc { font-size: 15px; }
  .hero-badge { font-size: 12px; padding: 6px 14px; }
  .hero-stats { gap: 14px; }
  .hero-stat b { font-size: 22px; }
  .brand { font-size: 18px; }
  .brand-icon { width: 34px; height: 34px; font-size: 15px; }
  .faq-item summary { padding: 18px 18px; font-size: 15px; }
  .faq-body { padding: 14px 18px 20px; font-size: 14px; }
  .category-entry-content { padding: 28px 20px; }
  .category-entry-content h2 { font-size: 24px; }
  .btn { padding: 12px 24px; font-size: 15px; }
  .footer-bottom { font-size: 13px; padding: 18px 10px; }
}

/* roulang page: category1 */
:root {
  --primary: #1e40af;
  --primary-dark: #1e3a8a;
  --primary-light: #eff4ff;
  --accent: #16a34a;
  --accent-dark: #15803d;
  --accent-light: #f0fdf4;
  --dark: #0f172a;
  --dark-soft: #1e293b;
  --bg: #f8fafc;
  --white: #ffffff;
  --text: #0f172a;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 10px rgba(15, 23, 42, .05);
  --shadow-md: 0 10px 30px rgba(15, 23, 42, .08);
  --shadow-lg: 0 20px 50px rgba(15, 23, 42, .12);
  --transition: all .25s ease;
}

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

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;
  margin: 0;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

ul, ol { list-style: none; padding: 0; margin: 0; }

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

input, textarea { font-family: inherit; }

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

.section { padding: 90px 0; }

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 999px;
  letter-spacing: .02em;
  margin-bottom: 14px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.25;
  margin: 0 0 14px;
  color: var(--text);
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 46px;
  line-height: 1.7;
}

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  height: 72px;
}

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

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 1.06rem;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
  transition: var(--transition);
}

.brand:hover { opacity: .82; color: var(--primary); }

.brand-icon {
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  background: var(--primary);
  color: #fff;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  box-shadow: 0 4px 12px rgba(30,64,175,.28);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 1.2rem;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.nav-toggle:hover { background: #dbe6ff; }

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

.main-nav a {
  padding: 9px 18px;
  border-radius: 999px;
  font-size: 0.94rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
}

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

.main-nav a.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 16px rgba(30,64,175,.25);
}

.main-nav .nav-cta {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  padding: 9px 20px;
  box-shadow: 0 6px 16px rgba(22,163,74,.25);
}

.main-nav .nav-cta:hover { background: var(--accent-dark); color: #fff; }

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    padding: 16px;
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: var(--transition);
    box-shadow: var(--shadow-md);
  }
  .main-nav.open { opacity: 1; visibility: visible; transform: translateY(0); }
  .main-nav a { text-align: center; padding: 12px 16px; }
}

/* Page Hero */
.page-hero {
  position: relative;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  padding: 120px 0;
  color: #fff;
  text-align: center;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,23,42,.82) 0%, rgba(30,64,175,.62) 100%);
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.16);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,.28);
  padding: 8px 20px;
  border-radius: 999px;
  font-size: .84rem;
  font-weight: 500;
  letter-spacing: .03em;
  margin-bottom: 26px;
}

.hero-badge i { color: #fbbf24; }

.page-hero h1 {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.2;
  margin: 0 0 20px;
  letter-spacing: -0.02em;
  text-shadow: 0 4px 20px rgba(0,0,0,.3);
}

.page-hero p {
  font-size: 1.15rem;
  line-height: 1.7;
  max-width: 620px;
  margin: 0 auto 34px;
  color: rgba(255,255,255,.9);
}

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

/* Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 28px;
  border-radius: 999px;
  font-size: .96rem;
  font-weight: 600;
  line-height: 1.3;
  border: 2px solid transparent;
  transition: var(--transition);
}

.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 8px 24px rgba(22,163,74,.28); }
.btn-primary:hover { background: var(--accent-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 12px 30px rgba(22,163,74,.34); }

.btn-outline { background: transparent; color: #fff; border-color: rgba(255,255,255,.7); }
.btn-outline:hover { background: rgba(255,255,255,.14); border-color: #fff; color: #fff; transform: translateY(-2px); }

.btn-ghost { background: var(--primary-light); color: var(--primary); }
.btn-ghost:hover { background: #dbe6ff; color: var(--primary-dark); transform: translateY(-2px); }

/* Intro Section */
.intro-section { background: var(--white); }

.intro-img-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

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

.intro-img-wrap::after {
  content: '华体app网页版登录入口';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 50px 24px 18px;
  background: linear-gradient(0deg, rgba(15,23,42,.65), transparent);
  color: #fff;
  font-size: .95rem;
  font-weight: 500;
}

.intro-content { padding-left: 24px; }

.intro-content .section-title { font-size: 1.9rem; margin-bottom: 16px; }

.intro-content p { color: var(--text-muted); font-size: 1rem; line-height: 1.8; margin-bottom: 22px; }

.intro-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  font-size: .97rem;
  color: var(--text);
}

.intro-list i {
  color: var(--accent);
  font-size: 1.05rem;
  margin-top: 4px;
  flex: 0 0 20px;
}

.link-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--primary);
  margin-top: 12px;
  border-bottom: 2px solid transparent;
}

.link-more:hover { border-color: var(--primary); color: var(--primary-dark); }

/* Methods */
.methods-section { background: var(--bg); }

.methods-section .section-title { text-align: center; }

.methods-section .section-subtitle { text-align: center; }

.method-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 30px;
  height: 100%;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.method-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--primary);
  opacity: 0;
  transition: var(--transition);
}

.method-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-6px); border-color: transparent; }
.method-card:hover::before { opacity: 1; }

.method-icon {
  width: 58px;
  height: 58px;
  border-radius: 16px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 22px;
  transition: var(--transition);
}

.method-card:hover .method-icon { background: var(--primary); color: #fff; }

.method-card h3 { font-size: 1.15rem; font-weight: 700; margin: 0 0 10px; }

.method-card p { font-size: .94rem; color: var(--text-muted); line-height: 1.7; margin: 0; }

/* Process Section */
.process-section { background: var(--dark); color: #fff; position: relative; overflow: hidden; }

.process-section::before {
  content: '';
  position: absolute;
  top: -160px;
  right: -160px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: rgba(30,64,175,.18);
}

.process-section .section-tag { background: rgba(255,255,255,.14); color: #fff; }

.process-section .section-title { color: #fff; text-align: center; }

.process-section .section-subtitle { color: rgba(255,255,255,.68); text-align: center; }

.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  margin: 56px 0 60px;
  position: relative;
  z-index: 1;
}

.step {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius);
  padding: 30px 20px;
  text-align: center;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: var(--transition);
}

.step:hover { background: rgba(255,255,255,.12); transform: translateY(-4px); border-color: rgba(255,255,255,.24); }

.step-num {
  display: inline-flex;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff;
  font-size: .95rem;
  font-weight: 700;
  border-radius: 12px;
  margin-bottom: 16px;
}

.step h3 { font-size: 1.02rem; font-weight: 600; margin: 0 0 8px; }

.step p { font-size: .84rem; color: rgba(255,255,255,.66); line-height: 1.6; margin: 0; }

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  position: relative;
  z-index: 1;
}

.stat { text-align: center; }

.stat-num { display: block; font-size: 2rem; font-weight: 800; color: #fff; line-height: 1.2; }

.stat-label { display: block; font-size: .88rem; color: rgba(255,255,255,.62); margin-top: 6px; }

/* Security */
.security-section { background: var(--white); }

.security-img-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

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

.security-content { padding-right: 20px; }

.security-content .section-title { font-size: 1.9rem; margin-bottom: 16px; }

.security-list { margin-top: 18px; }

.security-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  font-size: .98rem;
  color: var(--text);
}

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

.security-list i {
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  border-radius: 10px;
  background: var(--accent-light);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .9rem;
}

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

.faq-section .section-title { text-align: center; }

.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }

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

.faq-item.active { box-shadow: var(--shadow-md); border-color: transparent; }

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  gap: 16px;
  transition: var(--transition);
}

.faq-question i { font-size: .82rem; color: var(--text-muted); transition: var(--transition); flex: 0 0 18px; }

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

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

.faq-answer { max-height: 0; overflow: hiddden; transition: max-height .35s ease; }

.faq-answer p { padding: 0 24px 20px; color: var(--text-muted); font-size: .95rem; line-height: 1.7; margin: 0; }

/* CTA */
.cta-section {
  position: relative;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  padding: 90px 0;
  color: #fff;
  text-align: center;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,23,42,.85), rgba(30,64,175,.72));
}

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

.cta-section h2 { font-size: 2.2rem; font-weight: 800; margin: 0 0 14px; }

.cta-section p { max-width: 520px; margin: 0 auto 30px; color: rgba(255,255,255,.85); font-size: 1.06rem; }

.cta-btn { display: inline-flex; align-items: center; gap: 10px; background: #fff; color: var(--primary); padding: 14px 32px; border-radius: 999px; font-weight: 700; font-size: .98rem; transition: var(--transition); box-shadow: 0 10px 30px rgba(0,0,0,.25); }
.cta-btn:hover { transform: translateY(-3px); box-shadow: 0 14px 36px rgba(0,0,0,.3); color: var(--primary-dark); }

/* Footer */
.site-footer { background: #0b1220; color: #94a3b8; padding: 64px 0 0; }

.footer-top {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
}

.footer-brand i {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  border-radius: 10px;
  color: #fff;
  font-size: .9rem;
}

.footer-desc { font-size: .92rem; line-height: 1.7; color: #7a8699; max-width: 320px; margin: 0; }

.footer-title { color: #fff; font-size: .95rem; font-weight: 600; margin: 0 0 18px; }

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

.footer-links a { display: inline-flex; align-items: center; gap: 8px; font-size: .9rem; color: #94a3b8; transition: var(--transition); }

.footer-links a:hover { color: #fff; transform: translateX(2px); }

.footer-links i { font-size: .7rem; color: var(--accent); }

.footer-contact li { display: flex; gap: 12px; margin-bottom: 14px; font-size: .9rem; line-height: 1.6; color: #94a3b8; }

.footer-contact i { color: var(--accent); margin-top: 4px; flex: 0 0 18px; }

.footer-bottom { padding: 20px 0; text-align: center; font-size: .84rem; color: #64748b; }

.footer-bottom a { color: #94a3b8; transition: var(--transition); }

.footer-bottom a:hover { color: #fff; }

/* Media Queries */
@media (max-width: 1024px) {
  .process-steps { grid-template-columns: repeat(3, 1fr); }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: repeat(2, 1fr); gap: 36px; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section-title { font-size: 1.7rem; }
  .page-hero { padding: 90px 0; }
  .page-hero h1 { font-size: 2.2rem; }
  .intro-content { padding-left: 0; margin-top: 30px; }
  .security-content { padding-right: 0; margin-bottom: 30px; }
  .security-img-wrap img { height: 320px; }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr; gap: 30px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .btn { width: 100%; max-width: 320px; }
}

@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .section-title { font-size: 1.5rem; }
  .page-hero h1 { font-size: 1.8rem; }
  .page-hero p { font-size: 1rem; }
  .process-steps { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr; gap: 20px; }
  .brand { font-size: .95rem; }
  .brand-icon { width: 34px; height: 34px; flex-basis: 34px; }
  .intro-img-wrap img { height: 260px; }
  .security-img-wrap img { height: 250px; }
  .faq-question { padding: 18px; font-size: .95rem; }
  .cta-section h2 { font-size: 1.6rem; }
}

/* roulang page: article */
:root {
  --primary: #0e2a47;
  --primary-deep: #081c30;
  --primary-light: #1e3f66;
  --accent: #f6a821;
  --accent-hover: #e09200;
  --bg: #f4f7fc;
  --surface: #ffffff;
  --text: #17212f;
  --text-light: #627086;
  --border: #e2e8f1;
  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shadow-sm: 0 6px 18px rgba(14, 42, 71, .07);
  --shadow-md: 0 14px 34px rgba(14, 42, 71, .10);
  --shadow-lg: 0 24px 60px rgba(14, 42, 71, .16);
  --transition: .3s ease;
  --header-h: 78px;
}

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

html {
  scroll-behavior: smooth;
}

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

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition), background var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

ul, ol {
  list-style: none;
}

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

.container {
  max-width: 1220px;
  margin: 0 auto;
  padding: 0 24px;
}

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

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(246, 168, 33, .12);
  color: var(--accent-hover);
  font-size: .86rem;
  font-weight: 700;
  letter-spacing: .04em;
  padding: 7px 18px;
  border-radius: 100px;
  margin-bottom: 16px;
}

.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.35rem);
  color: var(--primary);
  line-height: 1.28;
  font-weight: 800;
  margin-bottom: 12px;
}

.section-head p {
  color: var(--text-light);
  font-size: 1.02rem;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 10px rgba(8, 28, 48, .04);
  transition: box-shadow var(--transition), background var(--transition);
}

.site-header.scrolled {
  box-shadow: 0 8px 28px rgba(8, 28, 48, .08);
  background: rgba(255, 255, 255, .97);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: .01em;
  white-space: nowrap;
  border-radius: var(--radius-sm);
}

.brand:focus-visible {
  outline: 3px solid rgba(246, 168, 33, .55);
  outline-offset: 4px;
}

.brand-icon {
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent), #ffc95b);
  color: var(--primary-deep);
  border-radius: 13px;
  font-size: 1.1rem;
  box-shadow: 0 6px 16px rgba(246, 168, 33, .35);
  flex-shrink: 0;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.main-nav > a {
  padding: 10px 18px;
  border-radius: 100px;
  font-weight: 600;
  font-size: .96rem;
  color: var(--text);
  position: relative;
}

.main-nav > a:hover {
  color: var(--primary);
  background: rgba(14, 42, 71, .06);
}

.main-nav > a.active {
  color: var(--primary);
  background: rgba(14, 42, 71, .08);
}

.main-nav > a.active::after {
  content: "";
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 4px;
  height: 3px;
  border-radius: 4px;
  background: var(--accent);
}

.main-nav .nav-cta {
  background: var(--accent);
  color: var(--primary-deep) !important;
  padding: 11px 24px;
  font-weight: 700;
  box-shadow: 0 6px 18px rgba(246, 168, 33, .32);
  margin-left: 10px;
}

.main-nav .nav-cta:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(246, 168, 33, .4);
}

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

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: rgba(14, 42, 71, .07);
  color: var(--primary);
  font-size: 1.15rem;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.nav-toggle:hover {
  background: rgba(14, 42, 71, .12);
}

/* ===== Page Banner ===== */
.page-banner {
  position: relative;
  background:
    linear-gradient(120deg, rgba(8, 28, 48, .95) 0%, rgba(14, 42, 71, .82) 55%, rgba(30, 63, 102, .72) 100%),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color: #fff;
  padding: 76px 0 82px;
  overflow: hidden;
}

.page-banner::after {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(246, 168, 33, .22), transparent 65%);
  pointer-events: none;
}

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

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
  font-size: .9rem;
  color: rgba(255, 255, 255, .7);
  margin-bottom: 24px;
}

.breadcrumb a {
  color: rgba(255, 255, 255, .82);
  padding: 4px 8px;
  border-radius: 6px;
}

.breadcrumb a:hover {
  color: var(--accent);
  background: rgba(255, 255, 255, .08);
}

.breadcrumb .fa-chevron-right {
  font-size: .7rem;
  color: rgba(255, 255, 255, .45);
}

.breadcrumb span {
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--accent);
  font-weight: 600;
}

.banner-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(246, 168, 33, .15);
  border: 1px solid rgba(246, 168, 33, .3);
  color: #ffd585;
  font-size: .85rem;
  font-weight: 700;
  padding: 7px 18px;
  border-radius: 100px;
  margin-bottom: 18px;
}

.page-banner h1 {
  font-size: clamp(1.7rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.3;
  max-width: 820px;
  margin-bottom: 18px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 10px 26px;
  flex-wrap: wrap;
  color: rgba(255, 255, 255, .78);
  font-size: .93rem;
}

.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.article-meta i {
  color: var(--accent);
}

/* ===== Article Section ===== */
.article-section {
  padding: 56px 0 20px;
}

.article-grid {
  align-items: flex-start;
}

.article-main {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 40px;
}

.article-cover {
  margin-bottom: 30px;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.article-cover img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 8;
  object-fit: cover;
}

.article-body {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--text);
}

.article-body h2 {
  font-size: 1.55rem;
  color: var(--primary);
  margin: 2.2rem 0 1.05rem;
  padding-bottom: .55rem;
  border-bottom: 2px solid var(--border);
  line-height: 1.4;
}

.article-body h3 {
  font-size: 1.28rem;
  color: var(--primary-light);
  margin: 1.7rem 0 .75rem;
  line-height: 1.4;
}

.article-body h4 {
  font-size: 1.1rem;
  color: var(--primary);
  margin: 1.4rem 0 .6rem;
}

.article-body p {
  margin-bottom: 1.1rem;
}

.article-body ul,
.article-body ol {
  margin-bottom: 1.2rem;
  padding-left: 1.5rem;
}

.article-body ul li,
.article-body ol li {
  margin-bottom: .5rem;
}

.article-body ul li::marker {
  color: var(--accent);
}

.article-body ol li::marker {
  color: var(--primary);
  font-weight: 700;
}

.article-body blockquote {
  position: relative;
  border-left: 4px solid var(--accent);
  background: #fffbf0;
  padding: 16px 22px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--text-light);
  font-style: italic;
  margin: 1.6rem 0;
}

.article-body a {
  color: var(--accent-hover);
  text-decoration: underline;
  text-underline-offset: 4px;
}

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

.article-body img {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  margin: 1.4rem 0;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.4rem 0;
  font-size: .95rem;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

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

.article-body table th {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
}

.article-body table tr:nth-child(even) td {
  background: #f8fafd;
}

/* ===== Not Found ===== */
.not-found {
  text-align: center;
  padding: 48px 20px 28px;
}

.not-found-icon {
  width: 84px;
  height: 84px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--accent);
  background: rgba(246, 168, 33, .12);
  border-radius: 50%;
}

.not-found h2 {
  font-size: 1.55rem;
  color: var(--primary);
  margin-bottom: 10px;
}

.not-found p {
  color: var(--text-light);
  margin-bottom: 24px;
}

/* ===== Tags ===== */
.article-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 34px;
  padding-top: 26px;
  border-top: 1px solid var(--border);
}

.tag-label {
  font-weight: 700;
  color: var(--primary);
  margin-right: 4px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.tag {
  display: inline-block;
  background: var(--bg);
  color: var(--text-light);
  border: 1px solid var(--border);
  font-size: .84rem;
  padding: 5px 14px;
  border-radius: 100px;
  transition: all var(--transition);
}

.tag:hover {
  border-color: var(--accent);
  color: var(--accent-hover);
  background: rgba(246, 168, 33, .08);
}

/* ===== Article Nav ===== */
.article-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 32px;
  padding-top: 26px;
  border-top: 1px solid var(--border);
}

.article-nav a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--text-light);
  padding: 10px 18px;
  border-radius: 100px;
  background: var(--bg);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.article-nav a:hover {
  color: var(--primary);
  border-color: rgba(14, 42, 71, .2);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

/* ===== Sidebar ===== */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.side-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}

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

.side-card h3 {
  font-size: 1.2rem;
  color: var(--primary);
  margin-bottom: 10px;
}

.side-card h4 {
  font-size: 1.02rem;
  color: var(--primary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.side-card h4 i {
  color: var(--accent);
}

.side-card p {
  color: var(--text-light);
  font-size: .93rem;
  margin-bottom: 18px;
}

.side-login {
  background: linear-gradient(145deg, var(--primary-deep), var(--primary-light));
  border: none;
  color: #fff;
  text-align: center;
  padding: 36px 28px;
}

.side-login .side-card-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent), #ffc95b);
  color: var(--primary-deep);
  font-size: 1.5rem;
  border-radius: 20px;
  box-shadow: 0 12px 28px rgba(246, 168, 33, .35);
}

.side-login h3 {
  color: #fff;
  font-size: 1.1rem;
  margin-bottom: 10px;
  line-height: 1.5;
}

.side-login p {
  color: rgba(255, 255, 255, .75);
  font-size: .92rem;
  margin-bottom: 22px;
}

.side-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.side-list a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-light);
  font-size: .92rem;
  border-left: 2px solid transparent;
  transition: all var(--transition);
}

.side-list a::before {
  content: "\f054";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: .72rem;
  color: var(--accent);
}

.side-list a:hover {
  color: var(--primary);
  background: rgba(14, 42, 71, .04);
  border-left-color: var(--accent);
}

.side-support {
  background: var(--bg);
}

.side-support .btn-secondary {
  width: 100%;
  justify-content: center;
}

/* ===== Buttons ===== */
.btn-primary,
.btn-secondary,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 28px;
  border-radius: 100px;
  font-weight: 700;
  font-size: .96rem;
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1.3;
}

.btn-primary {
  background: var(--accent);
  color: var(--primary-deep);
  box-shadow: 0 8px 22px rgba(246, 168, 33, .32);
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(246, 168, 33, .4);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 4px 12px rgba(246, 168, 33, .3);
}

.btn-secondary {
  background: var(--surface);
  color: var(--primary);
  border: 1.5px solid rgba(14, 42, 71, .24);
}

.btn-secondary:hover {
  border-color: var(--primary);
  background: rgba(14, 42, 71, .04);
}

.btn-ghost {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, .55);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, .1);
  border-color: #fff;
}

.btn-block {
  display: flex;
  width: 100%;
  justify-content: center;
}

.btn-lg {
  padding: 16px 34px;
  font-size: 1.02rem;
}

/* ===== Stats Bar ===== */
.stats-bar {
  background: var(--primary-deep);
  padding: 30px 0;
  border-top: 1px solid rgba(255, 255, 255, .06);
  border-bottom: 1px solid rgba(255, 255, 255, .06);
}

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

.stat-item {
  text-align: center;
  color: #fff;
  padding: 12px 16px;
}

.stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.3;
  margin-bottom: 4px;
}

.stat-label {
  color: rgba(255, 255, 255, .7);
  font-size: .92rem;
  letter-spacing: .02em;
}

/* ===== Steps Section ===== */
.steps-section {
  padding: 80px 0;
  background: var(--bg);
}

.steps-grid {
  gap: 24px 0;
}

.step-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 34px 30px;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.step-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(246, 168, 33, .4);
}

.step-num {
  position: absolute;
  top: 22px;
  right: 26px;
  font-size: 2.7rem;
  font-weight: 800;
  color: rgba(14, 42, 71, .07);
  line-height: 1;
}

.step-icon {
  width: 58px;
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent), #ffc95b);
  color: var(--primary-deep);
  font-size: 1.35rem;
  border-radius: 18px;
  box-shadow: 0 10px 24px rgba(246, 168, 33, .3);
  margin-bottom: 20px;
}

.step-card h3 {
  font-size: 1.18rem;
  color: var(--primary);
  margin-bottom: 10px;
  font-weight: 700;
}

.step-card p {
  color: var(--text-light);
  font-size: .95rem;
  line-height: 1.75;
}

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

.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-list details {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0;
  overflow: hidden;
  transition: all var(--transition);
}

.faq-list details[open] {
  background: #fff;
  border-color: rgba(246, 168, 33, .45);
  box-shadow: var(--shadow-sm);
}

.faq-list summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 24px;
  cursor: pointer;
  font-weight: 700;
  color: var(--primary);
  font-size: 1rem;
  list-style: none;
  user-select: none;
  transition: color var(--transition);
}

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

.faq-list summary:hover {
  color: var(--accent-hover);
}

.faq-list summary i:first-child {
  color: var(--accent);
  font-size: 1.05rem;
}

.faq-list summary i:last-child {
  margin-left: auto;
  font-size: .8rem;
  color: var(--text-light);
  transition: transform var(--transition);
}

.faq-list details[open] summary i:last-child {
  transform: rotate(180deg);
}

.faq-list details p {
  padding: 0 24px 22px 54px;
  color: var(--text-light);
  font-size: .95rem;
  line-height: 1.8;
}

/* ===== CTA Section ===== */
.cta-section {
  padding: 56px 0 90px;
  background: var(--bg);
}

.cta-card {
  background:
    linear-gradient(120deg, rgba(8, 28, 48, .95), rgba(14, 42, 71, .85)),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border-radius: 28px;
  padding: 72px 48px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.cta-card::after {
  content: "";
  position: absolute;
  left: -60px;
  bottom: -90px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(246, 168, 33, .18), transparent 65%);
}

.cta-card h2 {
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
}

.cta-card p {
  color: rgba(255, 255, 255, .76);
  max-width: 620px;
  margin: 0 auto 30px;
  font-size: 1.05rem;
  position: relative;
  z-index: 1;
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-deep);
  color: rgba(255, 255, 255, .75);
  padding: 64px 0 0;
  border-top: 4px solid var(--accent);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 44px;
  padding-bottom: 48px;
}

.footer-brand {
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.footer-brand i {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent), #ffc95b);
  color: var(--primary-deep);
  border-radius: 12px;
  font-size: 1rem;
}

.footer-desc {
  font-size: .93rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, .6);
  max-width: 320px;
}

.footer-title {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 18px;
  padding-bottom: 10px;
  position: relative;
}

.footer-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 26px;
  height: 3px;
  border-radius: 4px;
  background: var(--accent);
}

.footer-links,
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, .66);
  font-size: .92rem;
  padding: 4px 0;
  transition: all var(--transition);
}

.footer-links a i {
  font-size: .6rem;
  color: var(--accent);
  transition: transform var(--transition);
}

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

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: .92rem;
  color: rgba(255, 255, 255, .66);
  line-height: 1.7;
}

.footer-contact i {
  color: var(--accent);
  margin-top: 4px;
  font-size: .9rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 22px 0;
  text-align: center;
  font-size: .88rem;
  color: rgba(255, 255, 255, .5);
}

.footer-bottom a {
  color: rgba(255, 255, 255, .8);
  border-bottom: 1px solid rgba(255, 255, 255, .2);
}

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

/* ===== Focus ===== */
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(246, 168, 33, .6);
  outline-offset: 2px;
  border-radius: 8px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  .page-banner {
    padding: 60px 0 66px;
  }

  .article-main {
    padding: 30px;
  }
}

@media (max-width: 900px) {
  .nav-wrap {
    min-height: 70px;
  }

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

  .main-nav {
    position: fixed;
    top: 82px;
    right: 18px;
    width: 290px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    flex-direction: column;
    align-items: stretch;
    padding: 18px;
    gap: 6px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition);
    z-index: 300;
  }

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

  .main-nav > a {
    padding: 12px 16px;
    border-radius: 12px;
    font-size: .96rem;
  }

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

  .main-nav .nav-cta {
    margin: 10px 0 0;
    justify-content: center;
    text-align: center;
  }

  .article-sidebar {
    margin-top: 20px;
  }

  .steps-grid .cell {
    margin-bottom: 0;
  }
}

@media (max-width: 768px) {
  .article-grid {
    row-gap: 28px;
  }

  .article-main {
    padding: 24px 20px;
  }

  .article-cover img {
    aspect-ratio: 16 / 10;
  }

  .breadcrumb span {
    max-width: 180px;
  }

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

  .cta-card {
    padding: 52px 24px;
  }

  .steps-section {
    padding: 64px 0;
  }

  .faq-section {
    padding: 64px 0;
  }
}

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

  .brand {
    font-size: 1rem;
  }

  .brand-icon {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    font-size: 1rem;
  }

  .main-nav {
    width: calc(100% - 32px);
    right: 16px;
  }

  .page-banner {
    padding: 44px 0 50px;
  }

  .page-banner h1 {
    font-size: 1.5rem;
  }

  .article-meta {
    gap: 10px 16px;
    font-size: .87rem;
  }

  .article-main {
    padding: 20px 16px;
    border-radius: 18px;
  }

  .article-body {
    font-size: 1rem;
  }

  .article-nav {
    flex-direction: column;
  }

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

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

  .stat-number {
    font-size: 1.7rem;
  }

  .step-card {
    padding: 28px 22px;
  }

  .cta-card {
    padding: 44px 18px;
    border-radius: 22px;
  }

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

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

  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-bottom: 36px;
  }

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

  .article-tags {
    align-items: flex-start;
    flex-direction: column;
  }
}