/* roulang page: index */
:root {
  --primary: #0C1522;
  --secondary: #101E30;
  --surface: #F4F8FC;
  --glass-bg: rgba(255,255,255,0.06);
  --glass-border: rgba(255,255,255,0.12);
  --accent: #2DE3A6;
  --accent-blue: #35BDF2;
  --warning: #FFA43C;
  --text: #F0F6FC;
  --text-body: #B9C4D0;
  --text-muted: #7E8CA0;
  --text-dark: #1B2736;
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 10px;
  --shadow-card: 0 12px 40px rgba(0,0,0,0.28);
  --shadow-glow: 0 0 20px rgba(45,227,166,0.45);
  --shadow-warning: 0 0 20px rgba(255,164,60,0.45);
  --transition: 0.25s ease;
  --header-height: 72px;
}
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:16px; line-height:1.8; color:var(--text-body);
  background:var(--primary); -webkit-font-smoothing:antialiased;
}
a { color:var(--accent); text-decoration:none; transition:color var(--transition); }
a:hover { color:var(--accent-blue); }
img { max-width:100%; display:block; }
ul, ol { list-style:none; }
input, select, textarea, button { font:inherit; color:inherit; }
button { background:none; border:none; cursor:pointer; }
.container { max-width:1280px; margin:0 auto; padding:0 32px; }
.section { padding:100px 0; }
.section-head { text-align:center; margin-bottom:60px; }
.section-head .tag { display:inline-block; font-size:12px; letter-spacing:2px; text-transform:uppercase; color:var(--accent); background:rgba(45,227,166,0.1); padding:6px 18px; border-radius:30px; margin-bottom:16px; }
.section-head h2 { font-size:32px; font-weight:900; color:var(--text); margin-bottom:12px; line-height:1.3; }
.section-head p { font-size:16px; color:var(--text-muted); max-width:640px; margin:0 auto; }
.section-head.left { text-align:left; }
.section-head.left p { margin:0; }
.glass-card {
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-lg);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
}
.btn {
  display:inline-flex; align-items:center; justify-content:center;
  height:48px; padding:0 32px; border-radius:12px;
  font-size:16px; font-weight:600; letter-spacing:0.5px;
  transition:all var(--transition); border:none; cursor:pointer;
  text-decoration:none;
}
.btn:focus-visible { outline:2px solid var(--accent); outline-offset:3px; }
.btn-lg { height:56px; padding:0 40px; font-size:18px; }
.btn-sm { height:40px; padding:0 20px; font-size:14px; }
.btn-primary {
  background:var(--accent); color:var(--primary);
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover { background:#48f0b5; color:var(--primary); transform:translateY(-2px); box-shadow:0 0 30px rgba(45,227,166,0.6); }
.btn-outline {
  background:transparent; border:1px solid rgba(255,255,255,0.3);
  color:var(--text);
}
.btn-outline:hover { border-color:var(--accent); color:var(--accent); background:rgba(45,227,166,0.05); }
.btn-warning {
  background:var(--warning); color:var(--primary);
  box-shadow:var(--shadow-warning);
}
.btn-warning:hover { background:#FF8C14; color:var(--primary); transform:translateY(-2px); box-shadow:0 0 30px rgba(255,164,60,0.6); }
.badge {
  display:inline-block; padding:4px 12px; border-radius:30px;
  font-size:12px; font-weight:500; color:var(--accent);
  background:rgba(45,227,166,0.1); border:1px solid rgba(45,227,166,0.25);
}
.badge-blue { color:var(--accent-blue); background:rgba(53,189,242,0.1); border-color:rgba(53,189,242,0.25); }
.badge-warning { color:var(--warning); background:rgba(255,164,60,0.1); border-color:rgba(255,164,60,0.25); }

/* ===== Header/Nav ===== */
.site-header {
  position:fixed; top:16px; left:0; right:0; z-index:1000;
  display:flex; justify-content:center; padding:0 32px;
}
.header-container {
  width:100%; max-width:1280px;
  display:flex; align-items:center; justify-content:space-between;
  background:var(--surface); border-radius:18px;
  padding:12px 16px; box-shadow:0 8px 30px rgba(0,0,0,0.12);
  transition:all 0.35s ease;
}
.site-header.shrink .header-container {
  background:rgba(244,248,252,0.92);
  backdrop-filter:blur(12px);
  box-shadow:0 4px 20px rgba(0,0,0,0.10);
}
.brand {
  font-size:20px; font-weight:900; color:var(--text-dark);
  letter-spacing:0.5px; white-space:nowrap;
}
.brand span { color:var(--accent); }
.main-nav { display:flex; gap:10px; }
.nav-item {
  display:inline-block; padding:10px 20px; border-radius:8px;
  font-size:15px; font-weight:500; color:var(--text-dark);
  background:#fff; box-shadow:0 2px 8px rgba(0,0,0,0.04);
  transition:all var(--transition);
}
.nav-item:hover { transform:translateY(-2px); box-shadow:0 4px 16px rgba(0,0,0,0.08); color:var(--accent); }
.nav-item.active { color:var(--accent); font-weight:700; border-bottom:2px solid var(--accent); }
.header-cta { margin-left:6px; }
.hamburger {
  display:none; width:44px; height:44px; border-radius:8px;
  background:#fff; align-items:center; justify-content:center;
  box-shadow:0 2px 8px rgba(0,0,0,0.06); color:var(--text-dark);
  font-size:20px;
}
.mobile-nav {
  display:none; position:fixed; top:90px; left:16px; right:16px; z-index:999;
  background:rgba(16,30,48,0.96); backdrop-filter:blur(16px);
  border:1px solid var(--glass-border); border-radius:18px;
  padding:24px; flex-direction:column; gap:8px;
  box-shadow:0 20px 60px rgba(0,0,0,0.4);
}
.mobile-nav.show { display:flex; }
.mobile-nav a {
  display:block; padding:14px 20px; border-radius:10px;
  color:var(--text); font-size:16px; font-weight:500;
  background:rgba(255,255,255,0.04); border:1px solid rgba(255,255,255,0.06);
}
.mobile-nav a:hover { color:var(--accent); background:rgba(45,227,166,0.06); }
.mobile-nav a.active { color:var(--accent); border-color:rgba(45,227,166,0.3); }
.mobile-nav .btn { margin-top:10px; width:100%; }

/* ===== Hero ===== */
.hero {
  position:relative; min-height:90vh; display:flex; align-items:center;
  padding:140px 0 80px; overflow:hidden;
}
.hero-bg {
  position:absolute; inset:0; z-index:0; background-size:cover; background-position:center;
}
.hero-overlay {
  position:absolute; inset:0; z-index:1;
  background:linear-gradient(110deg, rgba(12,21,34,0.96) 0%, rgba(12,21,34,0.82) 40%, rgba(12,21,34,0.4) 100%);
}
.hero-content { position:relative; z-index:2; }
.hero h1 {
  font-size:44px; font-weight:900; color:var(--text); line-height:1.3;
  margin-bottom:20px; letter-spacing:1px;
}
.hero h1 .highlight {
  color:var(--accent); border-bottom:4px solid var(--accent);
  padding-bottom:2px;
}
.hero-sub {
  font-size:18px; color:var(--text-body); line-height:1.8;
  max-width:560px; margin-bottom:36px;
}
.hero-actions { display:flex; gap:16px; align-items:center; }
.hero-info-card { padding:28px; max-width:340px; margin-left:auto; }
.hero-info-card .status-row {
  display:flex; align-items:center; gap:10px;
  color:var(--text); font-size:14px; margin-bottom:20px;
}
.status-dot {
  display:inline-block; width:10px; height:10px; border-radius:50%;
  background:var(--accent); box-shadow:0 0 10px rgba(45,227,166,0.8);
  animation:pulse 2s infinite;
}
@keyframes pulse { 0%,100% { opacity:1; } 50% { opacity:0.5; } }
.info-item { display:flex; justify-content:space-between; padding:12px 0; border-top:1px solid rgba(255,255,255,0.08); }
.info-item .label { color:var(--text-muted); font-size:13px; }
.info-item .value { color:var(--text); font-size:14px; font-weight:600; }

/* ===== Benefits Stairs ===== */
.benefits-section { background:var(--secondary); position:relative; overflow:hidden; }
.benefits-section::before {
  content:''; position:absolute; top:0; right:0; width:40%; height:100%;
  background:url('/assets/images/coverpic/cover-2.webp') no-repeat center/cover;
  opacity:0.08; z-index:0;
}
.benefits-section .container { position:relative; z-index:1; }
.benefits-stairs { display:flex; align-items:flex-end; justify-content:center; gap:24px; flex-wrap:wrap; }
.benefit-card {
  background:var(--glass-bg); border:1px solid var(--glass-border);
  border-radius:var(--radius-lg); padding:36px 28px;
  width:300px; backdrop-filter:blur(14px);
  transition:all var(--transition); position:relative;
}
.benefit-card:hover { transform:translateY(-8px); box-shadow:var(--shadow-card); border-color:var(--accent); }
.benefit-card.level-1 { margin-bottom:60px; }
.benefit-card.level-2 { margin-bottom:30px; }
.benefit-card.level-3 { margin-bottom:0; border-color:rgba(45,227,166,0.5); box-shadow:0 0 30px rgba(45,227,166,0.15); }
.level-tag {
  display:inline-block; font-size:12px; font-weight:600; letter-spacing:1px;
  padding:4px 12px; border-radius:20px; text-transform:uppercase;
  background:rgba(255,255,255,0.08); color:var(--text); margin-bottom:14px;
}
.level-3 .level-tag { background:rgba(45,227,166,0.2); color:var(--accent); }
.benefit-card h3 { font-size:22px; font-weight:700; color:var(--text); margin-bottom:18px; }
.benefit-card ul li {
  position:relative; padding-left:24px; color:var(--text-body);
  font-size:15px; margin-bottom:10px;
}
.benefit-card ul li::before {
  content:'\f00c'; font-family:'Font Awesome 6 Free'; font-weight:900;
  position:absolute; left:0; top:2px; font-size:12px; color:var(--accent);
}
.benefit-card a.detail-link {
  display:inline-block; margin-top:16px; font-size:14px; color:var(--accent-blue);
}
.benefit-card a.detail-link:hover { color:var(--accent); }

/* ===== Plans ===== */
.plans-section { background:var(--primary); }
.plan-card {
  position:relative; background:var(--secondary);
  border:1px solid rgba(255,255,255,0.08); border-radius:var(--radius-lg);
  padding:40px 30px; text-align:center; height:100%;
  display:flex; flex-direction:column; align-items:center;
  transition:all var(--transition);
}
.plan-card:hover { transform:translateY(-6px); box-shadow:var(--shadow-card); }
.plan-card.popular {
  border-color:rgba(45,227,166,0.5);
  box-shadow:0 0 40px rgba(45,227,166,0.12);
  background:linear-gradient(180deg, rgba(45,227,166,0.06), var(--secondary));
}
.badge-popular {
  position:absolute; top:-14px; left:50%; transform:translateX(-50%);
  background:var(--accent); color:var(--primary); font-size:12px; font-weight:700;
  padding:6px 20px; border-radius:20px; white-space:nowrap;
  box-shadow:var(--shadow-glow);
}
.plan-card h3 { font-size:22px; font-weight:700; color:var(--text); margin-bottom:12px; }
.plan-price { font-size:36px; font-weight:900; color:var(--accent); margin-bottom:24px; }
.plan-price span { font-size:14px; font-weight:400; color:var(--text-muted); }
.plan-card ul { flex:1; margin-bottom:28px; width:100%; text-align:center; }
.plan-card ul li {
  position:relative; padding:8px 0 8px 28px; text-align:left;
  color:var(--text-body); font-size:15px; border-bottom:1px dashed rgba(255,255,255,0.06);
}
.plan-card ul li::before {
  content:'\f00c'; font-family:'Font Awesome 6 Free'; font-weight:900;
  position:absolute; left:4px; top:10px; font-size:12px; color:var(--accent);
}
.plan-card ul li.off::before { content:'\f00d'; color:var(--text-muted); }

/* ===== Limited ===== */
.limited-section {
  position:relative; padding:90px 0; overflow:hidden;
}
.limited-bg { position:absolute; inset:0; background-size:cover; background-position:center; z-index:0; }
.limited-overlay {
  position:absolute; inset:0; z-index:1;
  background:linear-gradient(90deg, rgba(12,21,34,0.92), rgba(12,21,34,0.7));
}
.limited-content {
  position:relative; z-index:2;
  display:flex; align-items:center; justify-content:space-between;
  gap:40px; flex-wrap:wrap;
}
.countdown-box { min-width:220px; }
.countdown-label {
  font-size:12px; letter-spacing:2px; color:var(--text-muted);
  text-transform:uppercase; display:block; margin-bottom:8px;
}
.countdown-digits {
  font-size:48px; font-weight:900; color:var(--warning);
  font-family:'Courier New',monospace; letter-spacing:2px;
  text-shadow:0 0 30px rgba(255,164,60,0.4);
}
.limited-text h2 { font-size:32px; font-weight:900; color:var(--text); margin-bottom:8px; }
.limited-text p { color:var(--text-body); font-size:16px; }

/* ===== Features ===== */
.features-section { background:var(--secondary); }
.feature-card {
  background:var(--glass-bg); border:1px solid var(--glass-border);
  border-radius:var(--radius-lg); padding:36px 28px; text-align:center;
  transition:all var(--transition); height:100%;
  backdrop-filter:blur(12px);
}
.feature-card:hover { transform:translateY(-6px); border-color:var(--accent); box-shadow:var(--shadow-card); }
.feature-card i {
  font-size:32px; color:var(--accent); margin-bottom:20px;
  display:inline-block; width:70px; height:70px; line-height:70px;
  border-radius:50%; background:rgba(45,227,166,0.1);
}
.feature-card h3 { font-size:20px; font-weight:700; color:var(--text); margin-bottom:12px; }
.feature-card p { font-size:15px; color:var(--text-muted); line-height:1.8; }

/* ===== Contact ===== */
.contact-section { background:var(--primary); }
.form-card { padding:40px; }
.form-card h2 { font-size:26px; color:var(--text); margin-bottom:28px; font-weight:700; }
.form-group { margin-bottom:22px; }
.form-group label {
  display:block; font-size:14px; color:var(--text-body); margin-bottom:8px; font-weight:500;
}
.form-group input,
.form-group select,
.form-group textarea {
  width:100%; padding:12px 16px; border-radius:10px;
  background:rgba(255,255,255,0.05); border:1px solid rgba(255,255,255,0.12);
  color:var(--text); font-size:15px; outline:none; transition:border-color var(--transition);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color:var(--text-muted); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color:var(--accent); box-shadow:0 0 0 3px rgba(45,227,166,0.15);
}
.form-group select option { background:var(--secondary); color:var(--text); }
.form-card .btn { width:100%; margin-top:6px; }
.contact-info { padding:40px; }
.contact-info h3 { font-size:22px; color:var(--text); margin-bottom:16px; font-weight:700; }
.contact-info p { color:var(--text-body); font-size:15px; line-height:1.9; margin-bottom:14px; }
.contact-info .info-list { margin-top:20px; }
.contact-info .info-list li {
  display:flex; align-items:center; gap:12px; padding:10px 0;
  color:var(--text-body); font-size:14px;
}
.contact-info .info-list li i { color:var(--accent); font-size:16px; width:20px; text-align:center; }

/* ===== News CMS ===== */
.news-section { background:var(--secondary); }
.news-list { max-width:100%; }
.news-item {
  display:flex; gap:20px; align-items:center;
  padding:24px 0; border-bottom:1px solid rgba(255,255,255,0.08);
  transition:border-color var(--transition);
}
.news-item:hover { border-bottom-color:var(--accent); }
.news-item img {
  width:160px; height:100px; object-fit:cover; border-radius:12px; flex-shrink:0;
}
.news-body { flex:1; min-width:0; }
.news-body .badge { margin-bottom:8px; }
.news-body h3 {
  font-size:18px; font-weight:700; color:var(--text); margin:6px 0 8px;
  line-height:1.5; overflow:hidden; text-overflow:ellipsis; display:-webkit-box; -webkit-line-clamp:1; -webkit-box-orient:vertical;
}
.news-body p {
  font-size:14px; color:var(--text-muted); line-height:1.7;
  overflow:hidden; text-overflow:ellipsis; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical;
}
.news-meta {
  display:flex; align-items:center; justify-content:space-between;
  margin-top:10px;
}
.news-meta time { font-size:12px; color:var(--text-muted); }
.read-more {
  font-size:13px; color:var(--accent-blue); font-weight:500;
}
.read-more:hover { color:var(--accent); }
.empty-state {
  padding:60px; text-align:center; background:var(--glass-bg);
  border:1px dashed rgba(255,255,255,0.2); border-radius:var(--radius-lg);
}
.empty-state p { color:var(--text-muted); font-size:16px; }
.empty-state i { font-size:36px; color:var(--text-muted); margin-bottom:16px; display:block; }

/* ===== FAQ ===== */
.faq-section { background:var(--primary); }
.faq-list { max-width:820px; margin:0 auto; }
.faq-item {
  border:1px solid rgba(255,255,255,0.08); border-radius:var(--radius-md);
  margin-bottom:12px; overflow:hidden; background:var(--secondary);
  transition:border-color var(--transition);
}
.faq-item.open { border-color:rgba(45,227,166,0.4); }
.faq-question {
  width:100%; display:flex; justify-content:space-between; align-items:center;
  padding:20px 24px; color:var(--text); font-size:16px; font-weight:500;
  text-align:left; transition:color var(--transition);
}
.faq-question:hover { color:var(--accent); }
.faq-icon { font-size:16px; color:var(--accent); transition:transform 0.3s ease; flex-shrink:0; margin-left:16px; }
.faq-item.open .faq-icon { transform:rotate(45deg); }
.faq-answer {
  max-height:0; overflow:hidden; transition:max-height 0.4s ease;
}
.faq-answer-inner { padding:0 24px 20px; }
.faq-answer-inner p { color:var(--text-body); font-size:15px; line-height:1.8; }

/* ===== CTA ===== */
.cta-section {
  padding:90px 0; text-align:center;
  background:linear-gradient(135deg, var(--secondary), var(--primary));
  border-top:1px solid rgba(255,255,255,0.05);
}
.cta-section h2 { font-size:32px; font-weight:900; color:var(--text); margin-bottom:10px; }
.cta-section p { color:var(--text-muted); margin-bottom:32px; font-size:16px; }

/* ===== Footer ===== */
.site-footer {
  background:#0A1018; padding:60px 0 0; border-top:1px solid rgba(255,255,255,0.04);
}
.footer-brand { font-size:20px; font-weight:900; color:var(--text); margin-bottom:12px; }
.footer-brand span { color:var(--accent); }
.footer-desc { color:var(--text-muted); font-size:14px; line-height:1.8; }
.footer-col h4 {
  font-size:16px; font-weight:600; color:var(--text); margin-bottom:18px;
}
.footer-col a {
  display:block; padding:6px 0; color:var(--text-muted); font-size:14px;
}
.footer-col a:hover { color:var(--accent); }
.footer-col p { color:var(--text-muted); font-size:14px; line-height:1.8; padding:6px 0; }
.copyright {
  margin-top:40px; padding:20px 0; text-align:center;
  border-top:1px solid rgba(255,255,255,0.06);
  color:var(--text-muted); font-size:13px;
}
.copyright a { color:var(--text-muted); }
.copyright a:hover { color:var(--accent); }

/* ===== Reveal Animation ===== */
.reveal { opacity:0; transform:translateY(30px); transition:opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity:1; transform:translateY(0); }

/* ===== Responsive ===== */
@media (max-width:1024px) {
  .section { padding:70px 0; }
  .hero { min-height:auto; padding:120px 0 60px; }
  .hero h1 { font-size:34px; }
  .hero-info-card { margin-left:0; margin-top:30px; max-width:100%; }
  .benefit-card { width:260px; }
  .limited-content { justify-content:center; text-align:center; }
  .countdown-box { width:100%; }
}
@media (max-width:768px) {
  .container { padding:0 16px; }
  .main-nav, .header-cta { display:none; }
  .hamburger { display:flex; }
  .section { padding:56px 0; }
  .section-head { margin-bottom:40px; }
  .section-head h2 { font-size:26px; }
  .hero h1 { font-size:28px; }
  .hero-sub { font-size:16px; }
  .hero-actions { flex-direction:column; align-items:flex-start; }
  .btn-lg { height:48px; padding:0 28px; font-size:16px; }
  .benefits-stairs { flex-direction:column; align-items:center; }
  .benefit-card { width:100%; max-width:400px; margin-bottom:20px !important; }
  .news-item { flex-direction:column; align-items:flex-start; }
  .news-item img { width:100%; height:200px; }
  .news-body h3 { -webkit-line-clamp:2; }
  .form-card { padding:28px; }
  .plan-card { padding:28px 20px; }
  .cta-section h2 { font-size:24px; }
  .site-header { padding:0 16px; top:10px; }
  .mobile-nav { top:80px; left:16px; right:16px; }
  .limited-text h2 { font-size:26px; }
  .countdown-digits { font-size:36px; }
}
@media (max-width:520px) {
  .hero { padding:110px 0 40px; }
  .hero h1 { font-size:24px; }
  .hero-sub { font-size:15px; }
  .section-head h2 { font-size:24px; }
  .section-head p { font-size:14px; }
  .plan-card { margin-bottom:20px; }
  .feature-card { margin-bottom:16px; }
  .news-item img { height:160px; }
  .faq-question { font-size:15px; padding:16px 18px; }
  .faq-answer-inner { padding:0 18px 16px; }
  .form-card, .contact-info { padding:20px; }
}

/* roulang page: category1 */
:root {
  --primary-bg: #0C1522;
  --secondary-bg: #101E30;
  --surface-light: #F4F8FC;
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-bg-strong: rgba(255, 255, 255, 0.10);
  --glass-border: rgba(255, 255, 255, 0.12);
  --accent-green: #2DE3A6;
  --accent-blue: #35BDF2;
  --accent-orange: #FFA43C;
  --accent-orange-dark: #FF8C14;
  --text-title: #F0F6FC;
  --text-body: #B9C4D0;
  --text-muted: #7E8CA0;
  --text-invert: #1B2736;
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 10px;
  --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.28);
  --shadow-green: 0 0 20px rgba(45, 227, 166, 0.45);
  --shadow-orange: 0 0 24px rgba(255, 164, 60, 0.4);
  --transition: 0.25s ease;
  --font-title: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Noto Sans SC', 'PingFang SC', system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--primary-bg);
  color: var(--text-body);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
  border: 0;
}

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

ul,
ol {
  list-style: none;
}

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

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}

.section-title {
  font-family: var(--font-title);
  font-size: 32px;
  font-weight: 900;
  color: var(--text-title);
  line-height: 1.3;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 560px;
  line-height: 1.7;
}

/* ===== 按钮体系 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 28px;
  border-radius: var(--radius-md);
  font-family: var(--font-title);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-green);
  color: var(--primary-bg);
  box-shadow: 0 0 20px rgba(45, 227, 166, 0.35);
}

.btn-primary:hover {
  background: #57ebbd;
  box-shadow: 0 0 32px rgba(45, 227, 166, 0.55);
  transform: translateY(-2px);
  color: var(--primary-bg);
}

.btn-outline {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #fff;
}

.btn-outline:hover {
  border-color: var(--accent-green);
  color: var(--accent-green);
}

.btn-orange {
  background: var(--accent-orange);
  color: var(--primary-bg);
  box-shadow: var(--shadow-orange);
}

.btn-orange:hover {
  background: var(--accent-orange-dark);
  box-shadow: 0 0 32px rgba(255, 164, 60, 0.55);
  transform: translateY(-2px);
  color: var(--primary-bg);
}

.btn-lg {
  height: 56px;
  padding: 0 40px;
  font-size: 18px;
}

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

/* ===== 导航面板 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 16px 0 0;
}

.nav-panel {
  background: var(--surface-light);
  border-radius: 18px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
  position: relative;
}

.brand-logo {
  font-family: var(--font-title);
  font-size: 22px;
  font-weight: 900;
  color: var(--text-invert);
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
  line-height: 1.2;
  white-space: nowrap;
}

.brand-logo i {
  color: var(--accent-green);
  font-size: 20px;
}

.brand-logo span {
  color: var(--accent-green);
  font-weight: 400;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  justify-content: center;
}

.nav-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 8px;
  background: #ffffff;
  color: var(--text-invert);
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  transition: all var(--transition);
  line-height: 1.4;
}

.nav-item i {
  font-size: 14px;
  color: var(--accent-blue);
}

.nav-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
  color: var(--accent-green);
}

.nav-item.active {
  color: var(--accent-green);
  font-weight: 700;
  box-shadow: 0 2px 12px rgba(45, 227, 166, 0.2);
}

.nav-item.active::after {
  content: '';
  display: block;
  height: 3px;
  border-radius: 2px;
  background: var(--accent-green);
}

.btn-nav {
  height: 40px;
  padding: 0 20px;
  font-size: 14px;
  box-shadow: 0 0 14px rgba(45, 227, 166, 0.3);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: #fff;
  color: var(--text-invert);
  font-size: 18px;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.mobile-nav {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: var(--surface-light);
  border-radius: 18px;
  padding: 16px;
  flex-direction: column;
  gap: 8px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
  z-index: 999;
}

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

.mobile-nav a {
  display: block;
  padding: 12px 16px;
  border-radius: 10px;
  background: #fff;
  color: var(--text-invert);
  font-weight: 600;
  font-size: 15px;
}

.mobile-nav a.active {
  color: var(--accent-green);
}

.mobile-nav .btn {
  margin-top: 4px;
}

/* ===== 分类Banner ===== */
.category-banner {
  position: relative;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  background-color: var(--primary-bg);
  padding: 96px 0 80px;
  border-radius: 0 0 32px 32px;
  overflow: hidden;
}

.category-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(12, 21, 34, 0.96) 0%, rgba(12, 21, 34, 0.78) 55%, rgba(12, 21, 34, 0.4) 100%);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 78%);
}

.category-banner::after {
  content: '';
  position: absolute;
  bottom: -1px;
  right: 0;
  width: 42%;
  height: 100%;
  background: linear-gradient(135deg, transparent 45%, rgba(45, 227, 166, 0.12) 100%);
  pointer-events: none;
}

.banner-inner {
  position: relative;
  z-index: 2;
}

.banner-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(45, 227, 166, 0.15);
  border: 1px solid rgba(45, 227, 166, 0.35);
  color: var(--accent-green);
  font-size: 13px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 30px;
  margin-bottom: 20px;
  letter-spacing: 0.04em;
}

.banner-tag i {
  font-size: 12px;
}

.category-banner h1 {
  font-family: var(--font-title);
  font-size: 44px;
  font-weight: 900;
  color: var(--text-title);
  line-height: 1.3;
  margin-bottom: 16px;
}

.category-banner h1 span {
  color: var(--accent-green);
}

.banner-desc {
  font-size: 16px;
  color: var(--text-body);
  max-width: 640px;
  line-height: 1.8;
  margin-bottom: 32px;
}

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

/* ===== 主体内容区 ===== */
.category-main {
  padding: 80px 0 40px;
}

.info-column {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.info-block {
  display: flex;
  gap: 32px;
  align-items: center;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 28px 28px;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(14px);
  transition: all var(--transition);
  scroll-margin-top: 100px;
}

.info-block:hover {
  transform: translateY(-4px);
  border-color: rgba(45, 227, 166, 0.4);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.35), 0 0 20px rgba(45, 227, 166, 0.15);
}

.info-block.flip {
  flex-direction: row-reverse;
}

.info-img {
  flex: 0 0 280px;
  border-radius: 14px;
  overflow: hidden;
}

.info-img img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 14px;
  transition: transform 0.5s ease;
}

.info-block:hover .info-img img {
  transform: scale(1.04);
}

.info-content {
  flex: 1;
}

.info-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--accent-blue);
  background: rgba(53, 189, 242, 0.12);
  border: 1px solid rgba(53, 189, 242, 0.25);
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 12px;
}

.info-content h3 {
  font-family: var(--font-title);
  font-size: 24px;
  font-weight: 800;
  color: var(--text-title);
  line-height: 1.3;
  margin-bottom: 12px;
}

.info-content p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-body);
  margin-bottom: 16px;
}

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

.text-link:hover {
  gap: 12px;
  color: #57ebbd;
}

/* ===== 右侧锚点导航 ===== */
.sticky-sidebar {
  position: sticky;
  top: 100px;
}

.sidebar-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-card);
}

.sidebar-card h4 {
  font-family: var(--font-title);
  font-size: 18px;
  font-weight: 800;
  color: var(--text-title);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-card h4 i {
  color: var(--accent-green);
  margin-right: 8px;
}

.sidebar-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sidebar-links a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 14px;
  color: var(--text-body);
  transition: all var(--transition);
  line-height: 1.5;
}

.sidebar-links a i {
  width: 18px;
  text-align: center;
  color: var(--accent-blue);
  font-size: 13px;
}

.sidebar-links a:hover {
  background: rgba(45, 227, 166, 0.1);
  color: var(--accent-green);
  transform: translateX(4px);
}

.sidebar-card .sidebar-note {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
}

.sidebar-card .sidebar-note i {
  color: var(--accent-orange);
  margin-right: 4px;
}

/* ===== 热门标签 ===== */
.tags-section {
  padding: 40px 0;
}

.tags-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  backdrop-filter: blur(14px);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.tags-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 800;
  color: var(--text-title);
  margin-right: 8px;
}

.tags-label i {
  color: var(--accent-green);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-body);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 6px 16px;
  border-radius: 30px;
  transition: all var(--transition);
  cursor: default;
}

.tag i {
  font-size: 11px;
  color: var(--accent-blue);
}

.tag:hover {
  border-color: var(--accent-green);
  color: var(--accent-green);
  background: rgba(45, 227, 166, 0.1);
}

/* ===== FAQ区域 ===== */
.faq-section {
  padding: 60px 0 80px;
  scroll-margin-top: 90px;
}

.faq-head {
  margin-bottom: 40px;
}

.custom-accordion {
  background: transparent;
  border: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.custom-accordion .accordion-item {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 0 24px;
  backdrop-filter: blur(14px);
  transition: border-color var(--transition);
}

.custom-accordion .accordion-item.is-active {
  border-color: rgba(45, 227, 166, 0.4);
}

.custom-accordion .accordion-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-title);
  padding: 22px 0;
  border-bottom: 1px solid transparent;
  transition: color var(--transition);
  gap: 16px;
}

.custom-accordion .accordion-title::before {
  content: none;
}

.custom-accordion .accordion-title::after {
  content: '\f067';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 16px;
  color: var(--accent-green);
  transition: transform var(--transition);
  flex-shrink: 0;
}

.custom-accordion .accordion-item.is-active .accordion-title {
  color: var(--accent-green);
}

.custom-accordion .accordion-item.is-active .accordion-title::after {
  content: '\f068';
  transform: rotate(180deg);
}

.custom-accordion .accordion-content {
  padding: 0 0 24px;
  color: var(--text-body);
  font-size: 15px;
  line-height: 1.8;
  border: none;
  background: transparent;
}

/* ===== CTA区域 ===== */
.cta-section {
  padding: 60px 0 100px;
}

.cta-card {
  position: relative;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  border-radius: 24px;
  padding: 64px 48px;
  text-align: center;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.cta-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(12, 21, 34, 0.94) 0%, rgba(16, 30, 48, 0.88) 100%);
}

.cta-card > * {
  position: relative;
  z-index: 2;
}

.cta-card h2 {
  font-family: var(--font-title);
  font-size: 32px;
  font-weight: 900;
  color: var(--text-title);
  margin-bottom: 12px;
}

.cta-card p {
  font-size: 15px;
  color: var(--text-body);
  margin-bottom: 28px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== 页脚 ===== */
.site-footer {
  background: #111D2C;
  padding: 60px 0 0;
  margin-top: 40px;
}

.footer-brand {
  font-family: var(--font-title);
  font-size: 24px;
  font-weight: 900;
  color: var(--text-title);
  margin-bottom: 12px;
}

.footer-brand span {
  color: var(--accent-green);
}

.footer-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 320px;
}

.footer-col h4 {
  font-family: var(--font-title);
  font-size: 16px;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--text-body);
  line-height: 2.2;
  transition: color var(--transition);
}

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

.footer-col p {
  font-size: 14px;
  color: var(--text-body);
  line-height: 2.2;
}

.footer-col i {
  color: var(--accent-blue);
  margin-right: 8px;
  width: 16px;
}

.copyright {
  margin-top: 40px;
  padding: 24px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.6;
}

.copyright a {
  color: var(--text-body);
}

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

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .info-block,
  .info-block.flip {
    flex-direction: column;
    align-items: flex-start;
  }

  .info-img {
    flex: none;
    width: 100%;
  }

  .info-img img {
    width: 100%;
    height: 220px;
  }

  .sticky-sidebar {
    position: static;
  }

  .sidebar-card {
    margin-top: 32px;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }

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

  .nav-panel {
    flex-wrap: wrap;
  }

  .main-nav {
    display: none;
  }

  .btn-nav {
    display: none;
  }

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

  .category-banner {
    padding: 64px 0 56px;
  }

  .category-banner h1 {
    font-size: 30px;
  }

  .banner-desc {
    font-size: 15px;
  }

  .category-main {
    padding: 56px 0 28px;
  }

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

  .cta-card h2 {
    font-size: 24px;
  }

  .site-footer {
    padding-top: 40px;
  }

  .tags-card {
    padding: 24px;
  }
}

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

  .nav-panel {
    padding: 10px 12px;
    border-radius: 14px;
  }

  .brand-logo {
    font-size: 18px;
  }

  .category-banner h1 {
    font-size: 26px;
  }

  .category-banner {
    padding: 48px 0 40px;
    border-radius: 0 0 20px 20px;
  }

  .info-block {
    padding: 20px;
    gap: 16px;
  }

  .info-img img {
    height: 180px;
  }

  .info-content h3 {
    font-size: 20px;
  }

  .faq-section {
    padding: 40px 0 56px;
  }

  .custom-accordion .accordion-item {
    padding: 0 16px;
  }

  .cta-section {
    padding: 40px 0 64px;
  }

  .cta-card {
    padding: 32px 20px;
  }
}

/* roulang page: article */
:root {
            --bg-primary: #0C1522;
            --bg-panel: #101E30;
            --surface-nav: #F4F8FC;
            --glass-bg: rgba(255, 255, 255, 0.06);
            --glass-strong: rgba(255, 255, 255, 0.10);
            --glass-border: rgba(255, 255, 255, 0.12);
            --accent: #2DE3A6;
            --accent-dark: #0C9E6E;
            --accent-2: #35BDF2;
            --warn: #FFA43C;
            --warn-dark: #FF8C14;
            --text-heading: #F0F6FC;
            --text-body: #B9C4D0;
            --text-muted: #7E8CA0;
            --nav-text: #1B2736;
            --radius-lg: 20px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.28);
            --glow-green: 0 0 20px rgba(45, 227, 166, 0.45);
            --glow-orange: 0 0 20px rgba(255, 164, 60, 0.45);
            --transition: 0.25s ease;
            --container-max: 1280px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            background: var(--bg-primary);
            color: var(--text-body);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        h1,
        h2,
        h3,
        h4,
        h5 {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            color: var(--text-heading);
            line-height: 1.3;
            font-weight: 700;
        }

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

        a:hover {
            color: var(--accent-2);
        }

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

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

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 32px;
        }

        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 16px 0 0;
            transition: padding 0.3s ease;
        }

        .header-inner {
            background: var(--surface-nav);
            border-radius: 18px;
            padding: 10px 14px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18);
            transition: all 0.3s ease;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .site-header.scrolled .header-inner {
            padding: 8px 14px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
        }

        .brand-logo {
            font-family: 'Noto Sans SC', 'PingFang SC', sans-serif;
            font-size: 22px;
            font-weight: 900;
            color: var(--nav-text);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
        }

        .brand-logo .brand-cn {
            color: var(--nav-text);
        }

        .brand-logo .brand-en {
            color: #0C9E6E;
            letter-spacing: -0.5px;
        }

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

        .nav-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 18px;
            background: #ffffff;
            color: var(--nav-text);
            border-radius: 10px;
            font-size: 14px;
            font-weight: 600;
            line-height: 1.4;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            transition: all var(--transition);
            border: 1px solid rgba(0, 0, 0, 0.04);
        }

        .nav-item i {
            color: var(--accent-2);
            font-size: 14px;
            transition: color var(--transition);
        }

        .nav-item:hover {
            transform: translateY(-2px);
            color: var(--accent-dark);
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.08);
        }

        .nav-item:hover i {
            color: var(--accent);
        }

        .nav-item.active {
            color: #0C9E6E;
            background: #EAFBF4;
            border-color: rgba(45, 227, 166, 0.25);
        }

        .nav-item.active i {
            color: var(--accent);
        }

        .nav-cta {
            margin-left: 4px;
            flex-shrink: 0;
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            background: #ffffff;
            border: 1px solid rgba(0, 0, 0, 0.06);
            border-radius: 10px;
            cursor: pointer;
            padding: 8px;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 4px;
            transition: background var(--transition);
        }

        .nav-toggle:hover {
            background: #f0faf5;
        }

        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--nav-text);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .nav-toggle.open span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }

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

        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 700;
            line-height: 1.5;
            cursor: pointer;
            border: none;
            transition: all var(--transition);
            text-align: center;
        }

        .btn-sm {
            padding: 9px 20px;
            font-size: 14px;
            border-radius: 10px;
        }

        .btn-primary {
            background: var(--accent);
            color: var(--bg-primary);
            box-shadow: var(--glow-green);
        }

        .btn-primary:hover {
            background: #45F0B8;
            color: var(--bg-primary);
            box-shadow: 0 0 30px rgba(45, 227, 166, 0.65);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.35);
        }

        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            box-shadow: 0 0 0 4px rgba(45, 227, 166, 0.1);
        }

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

        .article-hero {
            position: relative;
            padding: 80px 0 60px;
            overflow: hidden;
        }

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

        .article-hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(12, 21, 34, 0.95) 0%, rgba(12, 21, 34, 0.78) 60%, rgba(16, 30, 48, 0.55) 100%);
        }

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

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .breadcrumb a {
            color: var(--accent-2);
            font-weight: 500;
        }

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

        .breadcrumb i {
            font-size: 12px;
            color: var(--text-muted);
        }

        .breadcrumb .current {
            color: var(--text-body);
            font-weight: 500;
        }

        .article-h1 {
            font-size: 42px;
            font-weight: 900;
            max-width: 900px;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 18px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: rgba(45, 227, 166, 0.15);
            border: 1px solid rgba(45, 227, 166, 0.3);
            color: var(--accent);
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
        }

        .badge i {
            font-size: 11px;
        }

        .article-section {
            padding: 56px 0 40px;
            background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-panel) 100%);
        }

        .article-layout {
            max-width: 860px;
            margin: 0 auto;
        }

        .article-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: var(--radius-lg);
            padding: 48px;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
        }

        .article-summary {
            background: rgba(53, 189, 242, 0.08);
            border: 1px solid rgba(53, 189, 242, 0.18);
            border-left: 4px solid var(--accent-2);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            font-size: 15px;
            color: #D6E2F0;
            margin-bottom: 32px;
            line-height: 1.8;
        }

        .article-content {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.8;
            word-wrap: break-word;
        }

        .article-content p {
            margin-bottom: 24px;
            text-align: justify;
            letter-spacing: 0.3px;
        }

        .article-content h2 {
            font-size: 26px;
            font-weight: 700;
            margin: 40px 0 18px;
            padding-bottom: 10px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .article-content h3 {
            font-size: 21px;
            margin: 32px 0 14px;
        }

        .article-content h4 {
            font-size: 18px;
            margin: 24px 0 12px;
            color: var(--accent-2);
        }

        .article-content img {
            border-radius: 14px;
            margin: 24px 0;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .article-content blockquote {
            border-left: 4px solid var(--accent);
            background: rgba(255, 255, 255, 0.04);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 12px 12px 0;
            color: #D6E2F0;
        }

        .article-content ul,
        .article-content ol {
            margin: 16px 0 24px;
            padding-left: 24px;
        }

        .article-content ul li,
        .article-content ol li {
            margin-bottom: 8px;
        }

        .article-content a {
            color: var(--accent-2);
            border-bottom: 1px solid rgba(53, 189, 242, 0.3);
        }

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

        .not-found {
            text-align: center;
            padding: 60px 20px;
        }

        .not-found i {
            font-size: 52px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .not-found p {
            font-size: 18px;
            color: var(--text-heading);
            margin-bottom: 24px;
        }

        .article-footer-links {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .back-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--text-muted);
            font-size: 14px;
            font-weight: 600;
            transition: all var(--transition);
        }

        .back-link i {
            transition: transform var(--transition);
            font-size: 13px;
        }

        .back-link:hover {
            color: var(--accent);
        }

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

        .related-section {
            padding: 40px 0 80px;
            background: var(--bg-panel);
        }

        .section-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 28px;
        }

        .section-head h2 {
            font-size: 28px;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .section-head h2::before {
            content: '';
            width: 5px;
            height: 22px;
            border-radius: 4px;
            background: linear-gradient(180deg, var(--accent), var(--accent-2));
        }

        .related-card {
            display: flex;
            align-items: center;
            gap: 16px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            transition: all var(--transition);
            height: 100%;
        }

        .related-card:hover {
            transform: translateY(-4px);
            border-color: rgba(45, 227, 166, 0.4);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }

        .related-thumb {
            width: 84px;
            height: 64px;
            border-radius: 10px;
            object-fit: cover;
            flex-shrink: 0;
        }

        .related-info {
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .related-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-heading);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            transition: color var(--transition);
        }

        .related-card:hover .related-title {
            color: var(--accent);
        }

        .related-time {
            font-size: 12px;
            color: var(--text-muted);
        }

        .related-arrow {
            flex-shrink: 0;
            color: var(--text-muted);
            font-size: 14px;
            transition: all var(--transition);
        }

        .related-card:hover .related-arrow {
            color: var(--accent);
            transform: translateX(4px);
        }

        .cta-section {
            padding: 60px 0;
            background: var(--bg-primary);
        }

        .cta-panel {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 48px 56px;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            position: relative;
            overflow: hidden;
        }

        .cta-panel::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(45, 227, 166, 0.15), transparent 70%);
            pointer-events: none;
        }

        .cta-copy {
            position: relative;
            z-index: 1;
        }

        .cta-copy h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .cta-copy p {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 480px;
        }

        .cta-panel .btn {
            position: relative;
            z-index: 1;
            flex-shrink: 0;
        }

        .site-footer {
            background: #0E1926;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 64px 0 24px;
            margin-top: 40px;
        }

        .footer-brand {
            font-size: 26px;
            font-weight: 900;
            color: var(--text-heading);
            margin-bottom: 12px;
        }

        .footer-brand span {
            color: var(--accent);
        }

        .footer-desc {
            font-size: 14px;
            color: var(--text-muted);
            max-width: 320px;
            line-height: 1.7;
        }

        .footer-col h4 {
            font-size: 16px;
            color: var(--text-heading);
            margin-bottom: 16px;
            font-weight: 700;
        }

        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 14px;
            padding: 5px 0;
            transition: color var(--transition), padding-left var(--transition);
        }

        .footer-col a:hover {
            color: var(--accent);
            padding-left: 6px;
        }

        .footer-col p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-col p i {
            color: var(--accent-2);
            width: 18px;
        }

        .copyright {
            margin-top: 36px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            text-align: center;
            font-size: 13px;
            color: var(--text-muted);
        }

        .copyright a {
            color: var(--text-muted);
        }

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

        @media (max-width: 1024px) {
            .nav-item {
                padding: 9px 12px;
            }

            .nav-item i {
                display: none;
            }

            .article-h1 {
                font-size: 36px;
            }
        }

        @media (max-width: 767px) {
            .site-header {
                top: 0;
                padding: 12px 0 0;
            }

            .header-inner {
                flex-wrap: wrap;
            }

            .brand-logo {
                font-size: 20px;
            }

            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 6px;
                background: rgba(244, 248, 252, 0.98);
                border-radius: 14px;
                padding: 14px;
                margin-top: 10px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
            }

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

            .nav-item {
                width: 100%;
            }

            .nav-cta {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .article-hero {
                padding: 40px 0 32px;
            }

            .article-h1 {
                font-size: 28px;
            }

            .article-card {
                padding: 24px 18px;
            }

            .article-summary {
                padding: 16px 18px;
            }

            .article-content {
                font-size: 15px;
            }

            .cta-panel {
                flex-direction: column;
                padding: 32px;
            }

            .cta-copy h2 {
                font-size: 22px;
            }

            .related-card {
                padding: 14px;
                margin-bottom: 12px;
            }

            .related-thumb {
                width: 64px;
                height: 52px;
            }

            .section-head h2 {
                font-size: 22px;
            }
        }

        @media (max-width: 520px) {
            .article-card {
                padding: 20px 14px;
            }

            .article-h1 {
                font-size: 24px;
            }

            .cta-panel {
                padding: 24px 20px;
            }
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --bg-primary: #0C1522;
            --bg-panel: #101E30;
            --bg-card: rgba(255, 255, 255, 0.06);
            --bg-nav: #F4F8FC;
            --bg-nav-item: #ffffff;
            --accent-green: #2DE3A6;
            --accent-green-dark: #17b384;
            --accent-blue: #35BDF2;
            --accent-orange: #FFA43C;
            --text-title: #F0F6FC;
            --text-body: #B9C4D0;
            --text-muted: #7E8CA0;
            --text-nav: #1B2736;
            --border-glass: rgba(255, 255, 255, 0.12);
            --radius-lg: 20px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.28);
            --shadow-green: 0 0 20px rgba(45, 227, 166, 0.45);
            --transition: all 0.25s ease;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            background: var(--bg-primary);
            color: var(--text-body);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 32px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 16px 0 0;
            transition: var(--transition);
        }

        .site-header.scrolled {
            padding-top: 6px;
        }

        .site-header.scrolled .header-wrap {
            box-shadow: 0 10px 36px rgba(0, 0, 0, 0.35);
        }

        .header-wrap {
            background: var(--bg-nav);
            border-radius: 18px;
            padding: 12px 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.22);
            transition: var(--transition);
        }

        .brand-logo {
            font-size: 26px;
            font-weight: 900;
            color: var(--text-nav);
            letter-spacing: 0.5px;
            line-height: 1.2;
            white-space: nowrap;
        }

        .brand-logo span {
            color: var(--accent-green-dark);
            font-weight: 900;
        }

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

        .nav-item {
            background: var(--bg-nav-item);
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            color: var(--text-nav);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .nav-item:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.10);
            color: var(--accent-green-dark);
            border-color: rgba(23, 179, 132, 0.25);
        }

        .nav-item.active {
            color: var(--accent-green-dark);
            font-weight: 700;
            border-bottom: 2px solid var(--accent-green);
            padding-bottom: 8px;
        }

        .header-cta {
            background: var(--accent-green);
            color: #0C1522;
            font-weight: 700;
            font-size: 14px;
            padding: 10px 24px;
            border-radius: var(--radius-md);
            box-shadow: 0 0 18px rgba(45, 227, 166, 0.35);
            transition: var(--transition);
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }

        .header-cta:hover {
            background: #4ff0b8;
            box-shadow: 0 0 30px rgba(45, 227, 166, 0.55);
            transform: translateY(-2px);
        }

        .nav-toggle {
            display: none;
            background: transparent;
            border: none;
            font-size: 20px;
            color: var(--text-nav);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 8px;
        }

        /* ===== Banner ===== */
        .cat-banner {
            position: relative;
            padding: 200px 0 80px;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            border-radius: 0 0 24px 24px;
            overflow: hidden;
        }

        .cat-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(12, 21, 34, 0.96) 20%, rgba(12, 21, 34, 0.72) 55%, rgba(12, 21, 34, 0.45) 100%);
            z-index: 1;
        }

        .cat-banner::after {
            content: "";
            position: absolute;
            right: -80px;
            top: -80px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(45, 227, 166, 0.18), transparent 70%);
            z-index: 0;
        }

        .cat-banner .container {
            position: relative;
            z-index: 2;
        }

        .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(45, 227, 166, 0.12);
            border: 1px solid rgba(45, 227, 166, 0.35);
            color: var(--accent-green);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 100px;
            letter-spacing: 1px;
            margin-bottom: 20px;
        }

        .banner-tag i {
            font-size: 11px;
        }

        .cat-banner h1 {
            font-size: 44px;
            font-weight: 900;
            color: var(--text-title);
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .cat-banner h1 .highlight {
            color: var(--accent-green);
            text-decoration: underline;
            text-underline-offset: 6px;
            text-decoration-thickness: 3px;
        }

        .banner-desc {
            font-size: 17px;
            color: var(--text-body);
            max-width: 560px;
            margin-bottom: 0;
            line-height: 1.8;
        }

        /* ===== 主内容通用 ===== */
        main {
            background: var(--bg-primary);
        }

        .section {
            padding: 80px 0;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-title);
            line-height: 1.35;
            margin-bottom: 12px;
        }

        .section-sub {
            color: var(--text-muted);
            font-size: 15px;
            max-width: 720px;
            line-height: 1.7;
            margin-bottom: 40px;
        }

        /* ===== 大封面卡 ===== */
        .featured-panel {
            padding: 80px 0 40px;
        }

        .featured-inner {
            display: grid;
            grid-template-columns: 1.15fr 1fr;
            gap: 0;
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            overflow: hidden;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }

        .featured-inner:hover {
            box-shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
        }

        .featured-media {
            min-height: 320px;
            overflow: hidden;
            position: relative;
        }

        .featured-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }

        .featured-content {
            padding: 40px 36px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .featured-content .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(53, 189, 242, 0.12);
            border: 1px solid rgba(53, 189, 242, 0.30);
            color: var(--accent-blue);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 100px;
            margin-bottom: 18px;
            width: fit-content;
        }

        .featured-content h2 {
            font-size: 26px;
            font-weight: 800;
            color: var(--text-title);
            line-height: 1.4;
            margin-bottom: 16px;
        }

        .featured-content p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--text-body);
            margin-bottom: 20px;
        }

        .featured-list {
            list-style: none;
            padding: 0;
            display: grid;
            gap: 10px;
        }

        .featured-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-body);
        }

        .featured-list li i {
            color: var(--accent-green);
            font-size: 14px;
        }

        /* ===== 权益卡片 ===== */
        .benefit-cards {
            padding: 40px 0 80px;
        }

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

        .benefit-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .benefit-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-green), var(--accent-blue));
            opacity: 0;
            transition: var(--transition);
        }

        .benefit-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 18px 44px rgba(0, 0, 0, 0.35);
            border-color: rgba(45, 227, 166, 0.30);
        }

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

        .benefit-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
            background: rgba(45, 227, 166, 0.10);
            border: 1px solid rgba(45, 227, 166, 0.25);
            color: var(--accent-green);
        }

        .benefit-card:nth-child(2) .benefit-icon {
            background: rgba(53, 189, 242, 0.10);
            border-color: rgba(53, 189, 242, 0.25);
            color: var(--accent-blue);
        }

        .benefit-card:nth-child(3) .benefit-icon {
            background: rgba(255, 164, 60, 0.10);
            border-color: rgba(255, 164, 60, 0.25);
            color: var(--accent-orange);
        }

        .benefit-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .benefit-card p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-body);
            margin-bottom: 16px;
        }

        .benefit-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent-green);
            background: rgba(45, 227, 166, 0.08);
            padding: 4px 12px;
            border-radius: 100px;
            border: 1px solid rgba(45, 227, 166, 0.20);
        }

        .benefit-card:nth-child(2) .benefit-tag {
            color: var(--accent-blue);
            background: rgba(53, 189, 242, 0.08);
            border-color: rgba(53, 189, 242, 0.20);
        }

        .benefit-card:nth-child(3) .benefit-tag {
            color: var(--accent-orange);
            background: rgba(255, 164, 60, 0.08);
            border-color: rgba(255, 164, 60, 0.20);
        }

        /* ===== 3步流程 ===== */
        .steps-section {
            padding: 80px 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat fixed;
            position: relative;
        }

        .steps-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(12, 21, 34, 0.92);
            z-index: 1;
        }

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

        .steps-title {
            text-align: center;
            font-size: 32px;
            font-weight: 800;
            color: var(--text-title);
            margin-bottom: 12px;
        }

        .steps-sub {
            text-align: center;
            color: var(--text-muted);
            font-size: 15px;
            max-width: 620px;
            margin: 0 auto 56px;
            line-height: 1.7;
        }

        .steps-list {
            max-width: 720px;
            margin: 0 auto;
            position: relative;
            padding-left: 0;
            list-style: none;
        }

        .steps-list::before {
            content: "";
            position: absolute;
            left: 31px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, transparent, var(--accent-green) 15%, var(--accent-green) 85%, transparent);
            opacity: 0.5;
        }

        .step-item {
            display: flex;
            gap: 28px;
            padding: 28px 0;
            position: relative;
            align-items: flex-start;
        }

        .step-number {
            width: 64px;
            height: 64px;
            min-width: 64px;
            border-radius: 50%;
            background: var(--bg-panel);
            border: 2px solid var(--accent-green);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 900;
            color: var(--accent-green);
            box-shadow: 0 0 20px rgba(45, 227, 166, 0.25);
            position: relative;
            z-index: 2;
        }

        .step-item:nth-child(2) .step-number {
            border-color: var(--accent-blue);
            color: var(--accent-blue);
            box-shadow: 0 0 20px rgba(53, 189, 242, 0.25);
        }

        .step-item:nth-child(3) .step-number {
            border-color: var(--accent-orange);
            color: var(--accent-orange);
            box-shadow: 0 0 20px rgba(255, 164, 60, 0.25);
        }

        .step-content {
            padding-top: 6px;
        }

        .step-content h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .step-content p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-body);
            max-width: 480px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0 100px;
            text-align: center;
        }

        .cta-glass {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        .cta-glass::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(45, 227, 166, 0.20), transparent 70%);
        }

        .cta-glass h2 {
            font-size: 30px;
            font-weight: 800;
            color: var(--text-title);
            margin-bottom: 14px;
            line-height: 1.4;
        }

        .cta-glass p {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 520px;
            margin: 0 auto 30px;
            line-height: 1.7;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent-green);
            color: #0C1522;
            font-weight: 700;
            font-size: 16px;
            padding: 14px 40px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-green);
            border: none;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1;
        }

        .btn-primary:hover {
            background: #4ff0b8;
            box-shadow: 0 0 35px rgba(45, 227, 166, 0.65);
            transform: translateY(-2px);
        }

        .btn-primary:focus {
            outline: 2px solid var(--accent-green);
            outline-offset: 4px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #131f30;
            padding: 60px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-brand {
            font-size: 26px;
            font-weight: 900;
            color: var(--text-title);
            margin-bottom: 12px;
        }

        .footer-brand span {
            color: var(--accent-green);
        }

        .footer-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .footer-col a,
        .footer-col p {
            display: block;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 10px;
            line-height: 1.6;
        }

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

        .footer-col i {
            margin-right: 8px;
            color: var(--accent-green);
            width: 18px;
            text-align: center;
        }

        .copyright {
            margin-top: 50px;
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 13px;
            color: var(--text-muted);
            text-align: center;
            line-height: 1.6;
        }

        .copyright a {
            color: var(--text-muted);
        }

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

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

            .featured-inner {
                grid-template-columns: 1fr;
            }

            .featured-media {
                min-height: 260px;
                position: relative;
            }

            .featured-content {
                padding: 30px 28px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 20px;
            }

            .header-wrap {
                padding: 10px 14px;
            }

            .nav-toggle {
                display: block;
            }

            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                margin-top: 12px;
                gap: 6px;
                background: rgba(255, 255, 255, 0.95);
                padding: 12px;
                border-radius: 12px;
                box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
            }

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

            .nav-item {
                width: 100%;
                text-align: center;
            }

            .header-cta {
                display: none;
            }

            .cat-banner {
                padding: 140px 0 56px;
            }

            .cat-banner h1 {
                font-size: 32px;
            }

            .banner-desc {
                font-size: 15px;
            }

            .section {
                padding: 56px 0;
            }

            .featured-panel {
                padding: 56px 0 28px;
            }

            .benefit-cards {
                padding: 28px 0 56px;
            }

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

            .steps-section {
                padding: 56px 0;
            }

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

            .steps-list::before {
                left: 27px;
            }

            .step-number {
                width: 56px;
                height: 56px;
                min-width: 56px;
                font-size: 18px;
            }

            .cta-section {
                padding: 56px 0 60px;
            }

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

            .cta-glass h2 {
                font-size: 24px;
            }

            .footer-col {
                margin-bottom: 28px;
            }
        }

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

            .brand-logo {
                font-size: 22px;
            }

            .cat-banner h1 {
                font-size: 28px;
                line-height: 1.35;
            }

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

            .featured-content {
                padding: 24px 20px;
            }

            .featured-content h2 {
                font-size: 22px;
            }

            .benefit-card {
                padding: 24px 20px;
            }

            .step-item {
                gap: 16px;
            }

            .step-number {
                width: 48px;
                height: 48px;
                min-width: 48px;
                font-size: 16px;
            }

            .step-content h3 {
                font-size: 18px;
            }

            .steps-list::before {
                left: 23px;
            }
        }

        /* ===== 辅助类 ===== */
        .text-center {
            text-align: center;
        }

        .mt-0 {
            margin-top: 0;
        }

        .mb-0 {
            margin-bottom: 0;
        }