/* roulang page: index */
:root {
  --bg-main: #0A1A2F;
  --bg-sec: #0F2440;
  --bg-hover: #1B3B5C;
  --bg-deep: #081626;
  --brand-blue: #1E6FFF;
  --accent: #00E5A0;
  --txt-main: #F2F7FB;
  --txt-sub: #9DB0C3;
  --txt-weak: #5F7A93;
  --border-line: rgba(255,255,255,0.08);
  --glass-bg: rgba(16,44,76,0.6);
  --r-lg: 16px;
  --r-md: 10px;
  --r-pill: 999px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.25);
  --shadow-hover: 0 8px 40px rgba(30,111,255,0.18);
  --shadow-glow: 0 0 18px rgba(0,229,160,0.5);
  --grad-hero: linear-gradient(160deg, rgba(10,26,47,0.92) 30%, rgba(30,111,255,0.4) 100%);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg-main);
  color: var(--txt-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input { font-family: inherit; }
.container { width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 24px; }
@media (min-width: 1024px) { .container { padding: 0 32px; } }

/* ===== 顶部状态条 ===== */
.topbar {
  background: rgba(5,14,26,0.85);
  border-bottom: 1px solid rgba(255,255,255,0.04);
  font-size: 0.8rem;
  color: var(--txt-sub);
  padding: 6px 0;
}
.topbar .container { display: flex; align-items: center; justify-content: space-between; }
.topbar .topbar-tags { display: flex; gap: 16px; }

/* ===== 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10,26,47,0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  transition: background 0.35s ease, box-shadow 0.35s ease;
}
.site-header.scrolled {
  background: rgba(10,26,47,0.92);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}
.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 1.2rem;
  font-weight: 800;
  white-space: nowrap;
  letter-spacing: 0.5px;
}
.logo-dot {
  width: 32px; height: 32px; border-radius: 9px;
  background: linear-gradient(135deg, var(--brand-blue), var(--accent));
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 0.9rem; color: #062A22; font-weight: 900;
  flex-shrink: 0;
}
.search-wrap { flex: 1; min-width: 200px; max-width: 600px; }
.search-form { display: flex; align-items: center; height: 44px; border-radius: var(--r-pill); background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1); overflow: hidden; transition: background 0.3s ease, box-shadow 0.3s ease; }
.search-form:focus-within { background: rgba(255,255,255,0.1); box-shadow: 0 0 0 4px rgba(30,111,255,0.25); }
.search-form svg { width: 20px; height: 20px; color: var(--txt-sub); margin-left: 16px; flex-shrink: 0; }
.search-form input { flex: 1; background: transparent; border: none; outline: none; color: var(--txt-main); padding: 0 12px; font-size: 0.95rem; min-width: 0; }
.search-form input::placeholder { color: var(--txt-weak); }
.search-form button { background: transparent; border: none; color: var(--txt-sub); padding: 0 16px; cursor: pointer; display: inline-flex; align-items: center; }
.search-form button:hover { color: var(--accent); }
.main-nav { display: flex; align-items: center; gap: 4px; }
.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: var(--r-md);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--txt-sub);
  transition: color 0.25s ease, background 0.25s ease;
}
.nav-link:hover { color: var(--txt-main); background: rgba(255,255,255,0.06); }
.nav-link.active { color: var(--txt-main); background: rgba(30,111,255,0.16); }
.nav-link.active::after { content: ''; display: block; width: 4px; height: 4px; border-radius: 50%; background: var(--accent); margin-left: 6px; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #062A22;
  font-weight: 700;
  font-size: 0.92rem;
  padding: 10px 20px;
  border-radius: 10px;
  white-space: nowrap;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-glow);
  cursor: pointer;
  border: none;
}
.btn-primary:hover { transform: scale(1.02); filter: brightness(1.1); }
.btn-primary:active { transform: scale(0.98); }
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.06);
  color: var(--txt-main);
  font-weight: 600;
  font-size: 0.92rem;
  padding: 10px 20px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.14);
  white-space: nowrap;
  transition: all 0.3s ease;
  cursor: pointer;
}
.btn-secondary:hover { background: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.3); transform: scale(1.02); }
.btn-lg { padding: 14px 32px; font-size: 1rem; }
.btn-white {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  color: #0A1A2F;
  font-weight: 700;
  font-size: 1rem;
  padding: 14px 34px;
  border-radius: 10px;
  white-space: nowrap;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
}
.btn-white:hover { transform: scale(1.02); box-shadow: 0 8px 30px rgba(255,255,255,0.2); }
.menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 10px;
  width: 42px; height: 42px;
  align-items: center; justify-content: center;
  color: var(--txt-main);
  cursor: pointer;
}
.menu-toggle:hover { background: rgba(255,255,255,0.08); }

@media (max-width: 1023px) {
  .header-inner { gap: 0.5rem 0.75rem; }
  .logo { font-size: 1.05rem; }
  .search-wrap { order: 3; flex-basis: 100%; max-width: none; }
  .main-nav {
    display: none;
    order: 4;
    flex-basis: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 8px 0;
    border-top: 1px solid rgba(255,255,255,0.06);
  }
  .main-nav.open { display: flex; }
  .nav-link { padding: 14px 12px; border-radius: 10px; }
  .menu-toggle { display: inline-flex; }
  .header-cta { display: inline-flex; }
}
@media (max-width: 480px) {
  .header-inner { gap: 0.5rem; }
  .logo-dot { width: 28px; height: 28px; font-size: 0.8rem; }
  .header-cta { padding: 10px 14px; font-size: 0.85rem; }
}

/* ===== 玻璃卡片 ===== */
.glass-card {
  background: linear-gradient(135deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
  border: 1px solid rgba(255,255,255,0.08);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: var(--r-lg);
  transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}
.glass-card:hover { border-color: rgba(0,229,160,0.35); }

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 90px 0 70px;
  background: var(--grad-hero), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  overflow: hidden;
}
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.hero-title { font-size: 2.25rem; line-height: 1.2; font-weight: 800; margin-bottom: 20px; letter-spacing: 1px; }
.hero-title .highlight { color: var(--accent); }
.hero-sub { font-size: 1.1rem; color: var(--txt-sub); line-height: 1.8; max-width: 480px; margin-bottom: 32px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-actions .btn-primary, .hero-actions .btn-secondary { min-width: 150px; }
.hero-right { position: relative; }
.hero-img-wrap { position: relative; border-radius: 24px; overflow: hidden; box-shadow: var(--shadow-card); }
.hero-img-wrap img { width: 100%; height: auto; object-fit: cover; border-radius: 24px; }
.float-card {
  position: absolute;
  left: 16px; bottom: 16px;
  right: 16px;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.float-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); position: relative; flex-shrink: 0; }
.float-dot::after { content: ''; position: absolute; inset: -4px; border-radius: 50%; border: 2px solid rgba(0,229,160,0.4); animation: pulse 2s infinite; }
@keyframes pulse { 0% { transform: scale(0.8); opacity: 1; } 100% { transform: scale(1.6); opacity: 0; } }
.float-title { font-weight: 700; font-size: 0.95rem; }
.float-desc { font-size: 0.8rem; color: var(--txt-sub); }
@media (max-width: 1023px) {
  .hero { padding: 56px 0 48px; }
  .hero-inner { grid-template-columns: 1fr; gap: 32px; }
  .hero-title { font-size: 1.9rem; }
}
@media (max-width: 520px) {
  .hero-title { font-size: 1.65rem; }
  .hero-sub { font-size: 1rem; }
  .hero-actions .btn-primary, .hero-actions .btn-secondary { width: 100%; }
}

/* ===== 信任条 ===== */
.trust-section { padding: 40px 0; border-bottom: 1px solid rgba(255,255,255,0.05); background: var(--bg-deep); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.trust-item { text-align: center; padding: 8px 0; }
.trust-num { font-family: "DIN Alternate", Tahoma, sans-serif; font-size: 2rem; font-weight: 800; color: var(--accent); line-height: 1.2; }
.trust-label { color: var(--txt-sub); font-size: 0.85rem; margin-top: 4px; }
@media (max-width: 768px) {
  .trust-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
}

/* ===== 区块通用 ===== */
.section { padding: 72px 0; }
.section-head { text-align: center; max-width: 700px; margin: 0 auto 48px; }
.section-head h2 { font-size: 2rem; font-weight: 700; margin-bottom: 12px; letter-spacing: 0.5px; }
.section-head p { color: var(--txt-sub); font-size: 1rem; line-height: 1.7; }
.section-head .head-tag { display: inline-block; font-size: 0.8rem; color: var(--accent); background: rgba(0,229,160,0.1); padding: 4px 14px; border-radius: 999px; margin-bottom: 16px; font-weight: 500; }
@media (max-width: 768px) {
  .section { padding: 48px 0; }
  .section-head h2 { font-size: 1.5rem; }
}

/* ===== 三步上手 ===== */
.steps-section { background: var(--bg-main); position: relative; }
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; position: relative; }
.step-card { position: relative; padding: 32px 24px; overflow: hidden; }
.step-num {
  position: absolute;
  top: 8px; right: 16px;
  font-family: "DIN Alternate", Tahoma, sans-serif;
  font-size: 5rem;
  font-weight: 900;
  color: rgba(0,229,160,0.2);
  line-height: 1;
  pointer-events: none;
}
.step-icon { width: 48px; height: 48px; border-radius: 14px; background: rgba(0,229,160,0.12); display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.step-icon svg { width: 24px; height: 24px; color: var(--accent); }
.step-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; }
.step-card p { color: var(--txt-sub); font-size: 0.92rem; line-height: 1.7; margin-bottom: 16px; }
.step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.step-arrow { display: none; }
@media (min-width: 1024px) {
  .steps-grid { grid-template-columns: repeat(3, 1fr); }
  .step-arrow { display: block; position: absolute; top: 50%; width: 40px; height: 2px; background: repeating-linear-gradient(90deg, var(--accent) 0 8px, transparent 8px 14px); opacity: 0.5; }
  .step-arrow::after { content: '▸'; position: absolute; right: 0; top: -9px; color: var(--accent); font-size: 16px; }
  .step-arrow-1 { right: -28px; }
  .step-arrow-2 { right: -28px; }
}
@media (max-width: 1023px) {
  .steps-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .step-card { padding: 24px; }
}

/* ===== 案例证明 ===== */
.cases-section { background: var(--bg-deep); }
.cases-head { display: grid; grid-template-columns: 1fr 1.6fr; gap: 40px; align-items: center; margin-bottom: 48px; }
.cases-head h2 { font-size: 2rem; font-weight: 700; margin-bottom: 12px; }
.cases-head p { color: var(--txt-sub); }
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card { border-radius: var(--r-lg); overflow: hidden; background: rgba(16,44,76,0.45); border: 1px solid var(--border-line); transition: all 0.3s ease; }
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: rgba(0,229,160,0.35); }
.case-card.featured { grid-column: span 2; grid-row: span 2; }
.case-img { position: relative; overflow: hidden; }
.case-img img { width: 100%; height: auto; object-fit: cover; transition: transform 0.5s ease; }
.case-card:hover .case-img img { transform: scale(1.03); }
.case-tag { position: absolute; top: 12px; left: 12px; font-size: 0.75rem; background: rgba(0,229,160,0.85); color: #062A22; font-weight: 700; padding: 3px 12px; border-radius: 999px; }
.case-body { padding: 20px 20px 22px; }
.case-body h3 { font-size: 1rem; font-weight: 700; margin-bottom: 6px; }
.case-body p { color: var(--txt-sub); font-size: 0.85rem; line-height: 1.7; margin-bottom: 10px; }
.case-meta { font-size: 0.8rem; color: var(--accent); font-weight: 600; }
@media (max-width: 1023px) {
  .cases-head { grid-template-columns: 1fr; gap: 16px; }
  .cases-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .cases-grid { grid-template-columns: 1fr; }
  .case-card.featured { grid-column: span 1; grid-row: span 1; }
  .cases-head h2 { font-size: 1.5rem; }
}

/* ===== 内容频道 ===== */
.channels-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.channel-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 28px 20px;
  border-radius: var(--r-lg);
  background: linear-gradient(135deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  border: 1px solid var(--border-line);
  transition: all 0.3s ease;
}
.channel-card:hover { transform: translateY(-4px); border-color: rgba(0,229,160,0.35); box-shadow: var(--shadow-hover); }
.channel-icon { width: 52px; height: 52px; border-radius: 16px; background: rgba(30,111,255,0.16); display: flex; align-items: center; justify-content: center; margin-bottom: 14px; }
.channel-icon svg { width: 24px; height: 24px; color: var(--accent); }
.channel-name { font-weight: 700; font-size: 1rem; margin-bottom: 4px; }
.channel-desc { color: var(--txt-sub); font-size: 0.83rem; line-height: 1.6; }
@media (max-width: 1023px) {
  .channels-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .channels-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
}

/* ===== FAQ ===== */
.faq-section { background: var(--bg-main); }
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item { border-radius: var(--r-lg); background: rgba(255,255,255,0.04); border: 1px solid var(--border-line); margin-bottom: 12px; overflow: hidden; transition: border-color 0.3s ease, background 0.3s ease; }
.faq-item.active { border-color: rgba(0,229,160,0.35); background: rgba(255,255,255,0.06); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  cursor: pointer;
  font-weight: 600;
  font-size: 1.02rem;
  color: var(--txt-main);
  transition: color 0.2s ease;
}
.faq-question:hover { color: var(--accent); }
.faq-icon { flex-shrink: 0; width: 22px; height: 22px; position: relative; margin-left: 16px; }
.faq-icon::before, .faq-icon::after { content: ''; position: absolute; background: var(--accent); border-radius: 2px; transition: opacity 0.3s ease; }
.faq-icon::before { left: 50%; top: 1px; bottom: 1px; width: 2px; transform: translateX(-50%); }
.faq-icon::after { top: 50%; left: 1px; right: 1px; height: 2px; transform: translateY(-50%); }
.faq-item.active .faq-icon::before { opacity: 0; }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.faq-item.active .faq-answer { max-height: 300px; }
.faq-answer p { padding: 0 24px 18px; color: var(--txt-sub); font-size: 0.92rem; line-height: 1.8; }

/* ===== CTA ===== */
.cta-section { padding: 80px 0; background: var(--bg-deep); }
.cta-card {
  border-radius: 24px;
  background: linear-gradient(135deg, #0F2440 0%, #1E6FFF 100%);
  padding: 56px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 48px rgba(30,111,255,0.3);
}
.cta-card::before {
  content: '';
  position: absolute;
  top: -80px; right: -80px;
  width: 260px; height: 260px;
  background: radial-gradient(circle, rgba(0,229,160,0.4), transparent 70%);
  pointer-events: none;
}
.cta-card::after {
  content: '';
  position: absolute;
  bottom: -60px; left: -60px;
  width: 200px; height: 200px;
  background: radial-gradient(circle, rgba(30,111,255,0.4), transparent 70%);
  pointer-events: none;
}
.cta-card h2 { font-size: 2.2rem; font-weight: 800; margin-bottom: 12px; position: relative; z-index: 1; }
.cta-card p { color: rgba(255,255,255,0.8); font-size: 1rem; margin-bottom: 32px; position: relative; z-index: 1; }
.cta-card .btn-white { position: relative; z-index: 1; }
.cta-trust { display: flex; justify-content: center; gap: 40px; margin-top: 32px; flex-wrap: wrap; position: relative; z-index: 1; }
.cta-trust span { font-size: 0.85rem; color: rgba(255,255,255,0.85); display: flex; align-items: center; gap: 8px; }
.cta-trust span::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); flex-shrink: 0; }
@media (max-width: 768px) {
  .cta-section { padding: 48px 0; }
  .cta-card { padding: 40px 20px; }
  .cta-card h2 { font-size: 1.6rem; }
  .cta-trust { gap: 16px; flex-direction: column; align-items: center; }
}

/* ===== 最新资讯 ===== */
.news-section { background: var(--bg-main); }
.news-list { max-width: 960px; margin: 0 auto; display: flex; flex-direction: column; gap: 20px; }
.news-item {
  display: flex;
  gap: 20px;
  padding: 20px;
  border-radius: var(--r-lg);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-line);
  transition: all 0.3s ease;
}
.news-item:hover { transform: translateY(-3px); border-color: rgba(0,229,160,0.35); box-shadow: var(--shadow-hover); background: rgba(255,255,255,0.06); }
.news-thumb { flex-shrink: 0; width: 180px; height: 120px; border-radius: 12px; overflow: hidden; background: var(--bg-sec); }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-body { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.news-badge { display: inline-block; align-self: flex-start; font-size: 0.72rem; font-weight: 700; color: var(--accent); background: rgba(0,229,160,0.1); padding: 3px 10px; border-radius: 4px; margin-bottom: 8px; }
.news-body h4 { font-size: 1.1rem; font-weight: 700; line-height: 1.4; margin-bottom: 8px; }
.news-body h4 a { transition: color 0.2s ease; }
.news-body h4 a:hover { color: var(--accent); }
.news-summary { color: var(--txt-sub); font-size: 0.88rem; line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 10px; }
.news-meta { display: flex; align-items: center; justify-content: space-between; margin-top: auto; font-size: 0.8rem; color: var(--txt-weak); }
.news-meta .news-link { color: var(--accent); font-weight: 600; }
.empty-state {
  text-align: center;
  padding: 40px 0;
  color: var(--txt-weak);
  font-size: 0.95rem;
}
@media (max-width: 640px) {
  .news-item { flex-direction: column; gap: 12px; padding: 14px; }
  .news-thumb { width: 100%; height: 180px; }
}

/* ===== 页脚 ===== */
.site-footer { background: #071522; border-top: 1px solid rgba(255,255,255,0.06); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { color: var(--txt-sub); font-size: 0.88rem; line-height: 1.8; max-width: 300px; }
.footer-col h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 16px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: var(--txt-sub); font-size: 0.88rem; transition: color 0.2s ease; }
.footer-col ul li a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding: 20px 0; text-align: center; color: var(--txt-weak); font-size: 0.82rem; }
.footer-bottom a { color: var(--txt-sub); }
.footer-bottom a:hover { color: var(--accent); }
@media (max-width: 1023px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
}
@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

/* ===== 辅助 ===== */
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }

/* roulang page: article */
:root {
            --bg-dark: #0A1A2F;
            --bg-section: #0F2440;
            --bg-card: #1B3B5C;
            --brand-blue: #1E6FFF;
            --accent-green: #00E5A0;
            --text-primary: #F2F7FB;
            --text-secondary: #9DB0C3;
            --text-muted: #5F7A93;
            --border-glass: rgba(255, 255, 255, 0.06);
            --glass-bg: rgba(255, 255, 255, 0.04);
            --radius-sm: 4px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.25);
            --shadow-lg: 0 8px 40px rgba(30, 111, 255, 0.18);
            --glow-green: 0 0 18px rgba(0, 229, 160, 0.5);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            --font-num: "DIN Alternate", Tahoma, "PingFang SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }

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

        button {
            cursor: pointer;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        .glass-card {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-radius: var(--radius-lg);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }

        .glass-card:hover {
            border-color: rgba(0, 229, 160, 0.35);
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        /* ===== Header & Navigation ===== */
        .site-topbar {
            background: rgba(7, 21, 34, 0.9);
            border-bottom: 1px solid var(--border-glass);
            height: 36px;
            display: flex;
            align-items: center;
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        .site-topbar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .topbar-links {
            display: flex;
            gap: 20px;
            align-items: center;
        }

        .topbar-links a {
            color: var(--text-secondary);
        }

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

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(10, 26, 47, 0.72);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-glass);
            transition: background 0.35s ease, box-shadow 0.35s ease;
        }

        .site-header.scrolled {
            background: rgba(10, 26, 47, 0.9);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
        }

        .header-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            font-size: 1.125rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--text-primary);
            white-space: nowrap;
        }

        .logo-dot {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--brand-blue), var(--accent-green));
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 800;
            color: #fff;
            box-shadow: 0 0 14px rgba(30, 111, 255, 0.4);
        }

        .search-box {
            flex: 1;
            max-width: 600px;
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 999px;
            height: 44px;
            padding: 0 16px;
            transition: box-shadow 0.3s ease, background 0.3s ease;
            order: 2;
        }

        .search-box:focus-within {
            box-shadow: 0 0 0 4px rgba(30, 111, 255, 0.25);
            background: rgba(255, 255, 255, 0.1);
        }

        .search-icon {
            width: 18px;
            height: 18px;
            color: var(--text-muted);
            flex-shrink: 0;
            margin-right: 10px;
        }

        .search-box:focus-within .search-icon {
            color: var(--accent-green);
        }

        .search-input {
            flex: 1;
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-size: 0.875rem;
            height: 100%;
        }

        .search-input::placeholder {
            color: var(--text-muted);
        }

        .search-input:focus::placeholder {
            color: rgba(95, 122, 147, 0.4);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            order: 3;
        }

        .nav-link {
            padding: 8px 16px;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 999px;
            transition: color 0.25s, background 0.25s;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--accent-green);
            background: rgba(0, 229, 160, 0.08);
        }

        .nav-link.active {
            color: var(--accent-green);
            background: rgba(0, 229, 160, 0.12);
            font-weight: 600;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--accent-green);
            color: #062A22;
            font-size: 0.875rem;
            font-weight: 600;
            padding: 10px 24px;
            border-radius: var(--radius-md);
            box-shadow: var(--glow-green);
            transition: transform 0.25s ease, box-shadow 0.25s ease, filter 0.25s ease;
            white-space: nowrap;
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            transform: scale(1.02);
            filter: brightness(1.1);
            box-shadow: 0 0 24px rgba(0, 229, 160, 0.65);
        }

        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--brand-blue);
            outline-offset: 2px;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            color: var(--text-primary);
            font-size: 0.875rem;
            font-weight: 500;
            padding: 10px 24px;
            border-radius: var(--radius-md);
            transition: all 0.25s ease;
            cursor: pointer;
        }

        .btn-outline:hover {
            border-color: rgba(0, 229, 160, 0.4);
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        .nav-cta {
            order: 4;
            flex-shrink: 0;
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            order: 5;
        }

        .menu-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .menu-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

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

        .menu-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            padding: 130px 0 40px;
            background: linear-gradient(160deg, rgba(10, 26, 47, 0.92) 30%, rgba(30, 111, 255, 0.28) 100%);
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--border-glass);
        }

        .article-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.25;
            z-index: -1;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.8125rem;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color 0.2s;
        }

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

        .breadcrumb-sep {
            color: var(--text-muted);
            opacity: 0.6;
        }

        .article-hero h1 {
            font-size: 1.75rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-primary);
            max-width: 860px;
            margin-bottom: 16px;
            text-shadow: 0 2px 16px rgba(0, 0, 0, 0.3);
        }

        @media (min-width: 768px) {
            .article-hero h1 {
                font-size: 2.375rem;
            }
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            color: var(--text-muted);
            font-size: 0.875rem;
            margin-top: 8px;
        }

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

        .meta-item svg {
            width: 15px;
            height: 15px;
            color: var(--accent-green);
            opacity: 0.7;
        }

        .cat-badge {
            display: inline-block;
            background: rgba(0, 229, 160, 0.15);
            border: 1px solid rgba(0, 229, 160, 0.3);
            color: var(--accent-green);
            font-size: 0.75rem;
            font-weight: 500;
            padding: 2px 12px;
            border-radius: var(--radius-sm);
        }

        /* ===== Article Main ===== */
        .article-main {
            padding: 48px 0 64px;
            position: relative;
        }

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

        .article-card {
            padding: 32px 28px;
            border-radius: var(--radius-xl);
        }

        @media (min-width: 768px) {
            .article-card {
                padding: 48px 48px;
            }
        }

        .article-body {
            font-size: 1.0625rem;
            line-height: 1.9;
            color: var(--text-secondary);
            word-wrap: break-word;
        }

        .article-body h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-top: 2.2em;
            margin-bottom: 1em;
            padding-bottom: 0.5em;
            border-bottom: 2px solid rgba(30, 111, 255, 0.25);
            line-height: 1.4;
        }

        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-top: 2em;
            margin-bottom: 0.8em;
            line-height: 1.4;
        }

        .article-body p {
            margin-bottom: 1.5em;
            color: var(--text-secondary);
        }

        .article-body p:last-child {
            margin-bottom: 0;
        }

        .article-body strong {
            color: var(--text-primary);
            font-weight: 600;
        }

        .article-body a {
            color: var(--accent-green);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body a:hover {
            color: #33ffb5;
        }

        .article-body ul,
        .article-body ol {
            margin: 1.5em 0;
            padding-left: 1.6em;
        }

        .article-body ul {
            list-style: disc;
        }

        .article-body ol {
            list-style: decimal;
        }

        .article-body li {
            margin-bottom: 0.6em;
            padding-left: 4px;
        }

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

        .article-body blockquote {
            border-left: 3px solid var(--accent-green);
            background: rgba(0, 229, 160, 0.06);
            padding: 1rem 1.5rem;
            margin: 1.8em 0;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-secondary);
            font-style: normal;
        }

        .article-body blockquote p:last-child {
            margin-bottom: 0;
        }

        .article-body img {
            border-radius: var(--radius-lg);
            margin: 2em auto;
            box-shadow: var(--shadow-md);
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 2em 0;
            font-size: 0.9375rem;
        }

        .article-body th {
            background: rgba(30, 111, 255, 0.12);
            color: var(--text-primary);
            font-weight: 600;
            text-align: left;
            padding: 12px 16px;
            border: 1px solid var(--border-glass);
        }

        .article-body td {
            padding: 10px 16px;
            border: 1px solid var(--border-glass);
            color: var(--text-secondary);
        }

        .article-body tr:nth-child(even) td {
            background: rgba(255, 255, 255, 0.02);
        }

        .article-body code {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid var(--border-glass);
            padding: 2px 8px;
            border-radius: var(--radius-sm);
            font-size: 0.875em;
            font-family: "SF Mono", Consolas, "Courier New", monospace;
            color: var(--accent-green);
        }

        .article-body pre {
            background: rgba(7, 21, 34, 0.9);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 20px;
            margin: 2em 0;
            overflow-x: auto;
            line-height: 1.6;
            font-size: 0.875rem;
        }

        .article-body pre code {
            background: none;
            border: none;
            padding: 0;
            color: var(--text-secondary);
        }

        /* ===== Empty State ===== */
        .empty-state {
            text-align: center;
            padding: 80px 24px;
            border-radius: var(--radius-xl);
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
            border: 1px solid var(--border-glass);
        }

        .empty-state .empty-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 20px;
            border-radius: 50%;
            background: rgba(30, 111, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(30, 111, 255, 0.3);
        }

        .empty-state h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }

        .empty-state p {
            color: var(--text-secondary);
            margin-bottom: 24px;
            max-width: 420px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Article Actions ===== */
        .article-actions {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border-glass);
        }

        .back-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .back-links a {
            color: var(--text-secondary);
            font-size: 0.875rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color 0.2s;
        }

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

        .back-links a svg {
            width: 14px;
            height: 14px;
        }

        /* ===== Related Section ===== */
        .section-padding {
            padding: 64px 0;
        }

        @media (min-width: 768px) {
            .section-padding {
                padding: 80px 0;
            }
        }

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

        .section-heading {
            text-align: center;
            margin-bottom: 40px;
        }

        .section-heading h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        @media (min-width: 768px) {
            .section-heading h2 {
                font-size: 2.125rem;
            }
        }

        .section-heading p {
            color: var(--text-muted);
            font-size: 0.9375rem;
            max-width: 560px;
            margin: 0 auto;
        }

        .related-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
            max-width: 960px;
            margin: 0 auto;
        }

        @media (min-width: 768px) {
            .related-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        .related-card {
            display: flex;
            flex-direction: column;
            overflow: hidden;
            border-radius: var(--radius-lg);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            height: 100%;
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(0, 229, 160, 0.35);
        }

        .related-thumb {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

        .related-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .related-thumb .cat-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(10, 26, 47, 0.85);
            backdrop-filter: blur(8px);
            color: var(--accent-green);
            font-size: 0.75rem;
            padding: 3px 12px;
            border-radius: 999px;
            border: 1px solid rgba(0, 229, 160, 0.3);
        }

        .related-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .related-body h3 {
            font-size: 1.0625rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .related-body p {
            font-size: 0.875rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 12px;
            flex: 1;
        }

        .related-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        .related-meta a {
            color: var(--accent-green);
            font-weight: 500;
        }

        .related-meta a:hover {
            text-decoration: underline;
        }

        /* ===== FAQ ===== */
        .faq-section {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            border-radius: var(--radius-lg);
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color 0.3s ease;
        }

        .faq-item .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            font-size: 1.0625rem;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            user-select: none;
            background: transparent;
            width: 100%;
            text-align: left;
        }

        .faq-item .faq-question:hover {
            color: var(--accent-green);
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(0, 229, 160, 0.12);
            color: var(--accent-green);
            font-size: 1rem;
            font-weight: 400;
            transition: transform 0.35s ease;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            padding: 0 24px;
            transition: max-height 0.4s ease, padding 0.4s ease;
            color: var(--text-secondary);
            font-size: 0.9375rem;
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 64px 0;
            background: linear-gradient(160deg, rgba(10, 26, 47, 0.95) 20%, rgba(15, 36, 64, 0.9) 100%);
            border-top: 1px solid var(--border-glass);
        }

        .cta-card {
            max-width: 960px;
            margin: 0 auto;
            padding: 48px 32px;
            border-radius: var(--radius-xl);
            background: linear-gradient(135deg, #0F2440 0%, #1E6FFF 100%);
            text-align: center;
            box-shadow: 0 8px 48px rgba(30, 111, 255, 0.25);
            border: 1px solid rgba(255, 255, 255, 0.1);
            position: relative;
            overflow: hidden;
        }

        .cta-card::before {
            content: "";
            position: absolute;
            top: -50%;
            right: -30%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(0, 229, 160, 0.1);
            filter: blur(80px);
        }

        .cta-card h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        @media (min-width: 768px) {
            .cta-card h2 {
                font-size: 2rem;
            }
        }

        .cta-card p {
            color: rgba(242, 247, 251, 0.8);
            font-size: 0.9375rem;
            margin-bottom: 24px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-card .btn-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #fff;
            color: #0A1A2F;
            font-weight: 600;
            font-size: 1rem;
            padding: 14px 36px;
            border-radius: var(--radius-md);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }

        .cta-card .btn-white:hover {
            transform: scale(1.03);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
        }

        .cta-points {
            display: flex;
            justify-content: center;
            gap: 32px;
            flex-wrap: wrap;
            margin-top: 28px;
        }

        .cta-points span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: rgba(242, 247, 251, 0.75);
            font-size: 0.8125rem;
        }

        .cta-points svg {
            width: 16px;
            height: 16px;
            color: var(--accent-green);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #071522;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 56px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            padding-bottom: 40px;
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 1.4fr 1fr 1fr 1fr;
            }
        }

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

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.875rem;
            line-height: 1.8;
        }

        .footer-col h4 {
            color: var(--text-primary);
            font-size: 0.9375rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .footer-col ul {
            list-style: none;
        }

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

        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.875rem;
            transition: color 0.2s;
        }

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

        .footer-col ul li {
            color: var(--text-muted);
            font-size: 0.875rem;
            line-height: 1.6;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding: 20px 0;
            text-align: center;
        }

        .footer-bottom span {
            color: var(--text-muted);
            font-size: 0.8125rem;
        }

        .footer-bottom a {
            color: var(--text-secondary);
        }

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

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .header-row {
                flex-wrap: wrap;
                height: auto;
                padding: 12px 0;
                gap: 10px;
            }

            .logo {
                font-size: 1rem;
            }

            .logo-dot {
                width: 32px;
                height: 32px;
                font-size: 0.875rem;
            }

            .search-box {
                order: 4;
                max-width: 100%;
                width: 100%;
                flex-basis: 100%;
                margin-top: 4px;
            }

            .main-nav {
                order: 5;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                background: rgba(10, 26, 47, 0.95);
                border: 1px solid var(--border-glass);
                border-radius: var(--radius-md);
                padding: 8px;
                margin-top: 4px;
                display: none;
                position: absolute;
                left: 24px;
                right: 24px;
                top: 110px;
                z-index: 50;
            }

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

            .nav-link {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
            }

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

            .menu-toggle {
                display: flex;
            }
        }

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

            .header-row {
                gap: 8px;
            }

            .logo {
                font-size: 0.9375rem;
                gap: 6px;
            }

            .logo-dot {
                width: 28px;
                height: 28px;
                font-size: 0.75rem;
                border-radius: 6px;
            }

            .nav-cta {
                padding: 8px 16px;
                font-size: 0.8125rem;
            }

            .article-hero {
                padding-top: 120px;
                padding-bottom: 32px;
            }

            .breadcrumb {
                font-size: 0.75rem;
                gap: 4px;
            }

            .article-hero h1 {
                font-size: 1.5rem;
            }

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

            .article-body {
                font-size: 1rem;
                line-height: 1.85;
            }

            .article-body h2 {
                font-size: 1.25rem;
            }

            .article-body h3 {
                font-size: 1.125rem;
            }

            .article-body blockquote {
                padding: 0.875rem 1.125rem;
                margin: 1.4em 0;
            }

            .article-body table {
                font-size: 0.8125rem;
                display: block;
                overflow-x: auto;
            }

            .article-body pre {
                padding: 14px;
                font-size: 0.8125rem;
            }

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

            .related-thumb {
                height: 160px;
            }

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

            .back-links {
                width: 100%;
                justify-content: space-between;
            }

            .cta-card {
                padding: 40px 20px;
            }

            .cta-card h2 {
                font-size: 1.25rem;
            }

            .cta-points {
                gap: 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }

            .article-meta {
                gap: 10px;
                font-size: 0.8125rem;
            }
        }

        /* ===== Utility ===== */
        .sr-text {
            position: absolute;
            width: 1px;
            height: 1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
        }

        ::selection {
            background: rgba(0, 229, 160, 0.3);
            color: var(--text-primary);
        }

/* roulang page: category1 */
:root {
      --bg-main: #0A1A2F;
      --bg-section: #0F2440;
      --bg-card: #1B3B5C;
      --brand-blue: #1E6FFF;
      --accent-green: #00E5A0;
      --text-main: #F2F7FB;
      --text-sub: #9DB0C3;
      --text-weak: #5F7A93;
      --border-glass: rgba(255, 255, 255, 0.06);
      --glass-bg: rgba(16, 44, 76, 0.6);
      --radius-card: 16px;
      --radius-btn: 10px;
      --radius-full: 999px;
      --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.25);
      --shadow-hover: 0 8px 40px rgba(30, 111, 255, 0.18);
      --shadow-glow: 0 0 18px rgba(0, 229, 160, 0.5);
      --glow-blue: rgba(30, 111, 255, 0.45);
      --glow-green: rgba(0, 229, 160, 0.35);
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      background-color: var(--bg-main);
      background-image:
        linear-gradient(45deg, rgba(255, 255, 255, 0.012) 25%, transparent 25%, transparent 75%, rgba(255, 255, 255, 0.012) 75%),
        linear-gradient(45deg, rgba(255, 255, 255, 0.012) 25%, transparent 25%, transparent 75%, rgba(255, 255, 255, 0.012) 75%);
      background-size: 48px 48px;
      background-position: 0 0, 24px 24px;
      color: var(--text-main);
      line-height: 1.7;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    @media (min-width: 1024px) {
      .container {
        padding-left: 2rem;
        padding-right: 2rem;
      }
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.3s ease;
    }

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

    button, input {
      font-family: inherit;
    }

    input:focus, button:focus, a:focus {
      outline: 2px solid rgba(30, 111, 255, 0.6);
      outline-offset: 2px;
    }

    /* ===== Header 导航 ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(10, 26, 47, 0.85);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      transition: background 0.3s ease, box-shadow 0.3s ease;
    }

    .site-header.scrolled {
      background: rgba(10, 26, 47, 0.92);
      box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
    }

    .header-inner {
      display: flex;
      align-items: center;
      gap: 1.25rem;
      min-height: 72px;
      flex-wrap: wrap;
      padding-top: 0.75rem;
      padding-bottom: 0.75rem;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 0.625rem;
      font-size: 1.125rem;
      font-weight: 700;
      letter-spacing: 0.02em;
      flex-shrink: 0;
    }

    .logo:hover {
      opacity: 0.9;
    }

    .logo-dot {
      width: 36px;
      height: 36px;
      border-radius: 10px;
      background: linear-gradient(135deg, var(--brand-blue), var(--accent-green));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1rem;
      font-weight: 800;
      color: #fff;
      box-shadow: 0 0 16px rgba(30, 111, 255, 0.35);
    }

    .search-wrap {
      flex: 1;
      max-width: 520px;
      min-width: 220px;
      display: flex;
      align-items: center;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-full);
      height: 44px;
      padding: 0 0.875rem;
      gap: 0.5rem;
      transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    }

    .search-wrap:focus-within {
      background: rgba(255, 255, 255, 0.1);
      box-shadow: 0 0 0 4px rgba(30, 111, 255, 0.25);
      border-color: rgba(30, 111, 255, 0.4);
    }

    .search-wrap svg {
      flex-shrink: 0;
      color: var(--text-sub);
    }

    .search-wrap input {
      flex: 1;
      background: transparent;
      border: none;
      color: var(--text-main);
      font-size: 0.9375rem;
      height: 100%;
      min-width: 0;
    }

    .search-wrap input::placeholder {
      color: var(--text-sub);
      transition: color 0.3s ease;
    }

    .search-wrap input:focus {
      outline: none;
    }

    .search-wrap:focus-within input::placeholder {
      color: rgba(158, 176, 195, 0.4);
    }

    .main-nav {
      display: flex;
      align-items: center;
      gap: 0.375rem;
      flex-shrink: 0;
    }

    .nav-link {
      display: inline-block;
      padding: 0.5rem 0.875rem;
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--text-sub);
      border-radius: var(--radius-btn);
      transition: all 0.3s ease;
      white-space: nowrap;
    }

    .nav-link:hover {
      color: var(--text-main);
      background: rgba(255, 255, 255, 0.06);
    }

    .nav-link.active {
      color: var(--text-main);
      background: rgba(30, 111, 255, 0.15);
      font-weight: 600;
    }

    .nav-cta {
      flex-shrink: 0;
    }

    .nav-toggle {
      display: none;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 8px;
      padding: 0.5rem;
      cursor: pointer;
      color: var(--text-main);
      line-height: 0;
    }

    /* ===== 按钮 ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 0.9375rem;
      line-height: 1.2;
      padding: 0.75rem 1.5rem;
      transition: all 0.3s ease;
      cursor: pointer;
      border: 1px solid transparent;
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--accent-green);
      color: #062A22;
      box-shadow: var(--shadow-glow);
    }

    .btn-primary:hover {
      filter: brightness(1.1);
      transform: scale(1.02);
      box-shadow: 0 0 24px rgba(0, 229, 160, 0.6);
    }

    .btn-primary:active {
      transform: scale(0.98);
      box-shadow: 0 0 12px rgba(0, 229, 160, 0.4);
    }

    .btn-outline {
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.16);
      color: var(--text-main);
      backdrop-filter: blur(8px);
    }

    .btn-outline:hover {
      border-color: rgba(0, 229, 160, 0.4);
      background: rgba(255, 255, 255, 0.1);
      transform: translateY(-2px);
    }

    .btn-white {
      background: #fff;
      color: #0A1A2F;
      box-shadow: 0 4px 20px rgba(255, 255, 255, 0.2);
    }

    .btn-white:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 30px rgba(255, 255, 255, 0.3);
    }

    .btn-sm {
      padding: 0.5rem 1.125rem;
      font-size: 0.875rem;
    }

    /* ===== Hero ===== */
    .page-hero {
      position: relative;
      min-height: 420px;
      display: flex;
      align-items: center;
      background:
        linear-gradient(160deg, rgba(10, 26, 47, 0.92) 35%, rgba(30, 111, 255, 0.3) 100%),
        url('/assets/images/backpic/back-1.png') center/cover no-repeat;
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
      overflow: hidden;
    }

    .page-hero::after {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(45deg, rgba(255, 255, 255, 0.02) 25%, transparent 25%, transparent 75%, rgba(255, 255, 255, 0.02) 75%),
        linear-gradient(45deg, rgba(255, 255, 255, 0.02) 25%, transparent 25%, transparent 75%, rgba(255, 255, 255, 0.02) 75%);
      background-size: 40px 40px;
      background-position: 0 0, 20px 20px;
      pointer-events: none;
    }

    .hero-inner {
      position: relative;
      z-index: 2;
      padding-top: 3.5rem;
      padding-bottom: 3.5rem;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      background: rgba(0, 229, 160, 0.12);
      border: 1px solid rgba(0, 229, 160, 0.25);
      color: var(--accent-green);
      font-size: 0.8125rem;
      font-weight: 500;
      padding: 0.375rem 0.875rem;
      border-radius: var(--radius-full);
      margin-bottom: 1.5rem;
    }

    .page-hero h1 {
      font-size: 2.25rem;
      font-weight: 800;
      line-height: 1.15;
      color: var(--text-main);
      margin-bottom: 1rem;
      max-width: 720px;
    }

    .page-hero .hero-sub {
      font-size: 1.0625rem;
      line-height: 1.8;
      color: var(--text-sub);
      max-width: 560px;
      margin-bottom: 2rem;
    }

    .hero-actions {
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
    }

    .hero-stats {
      display: flex;
      gap: 2rem;
      margin-top: 2.5rem;
      flex-wrap: wrap;
    }

    .hero-stat {
      display: flex;
      flex-direction: column;
      gap: 0.25rem;
    }

    .hero-stat strong {
      font-family: "DIN Alternate", Tahoma, sans-serif;
      font-size: 1.375rem;
      color: var(--accent-green);
      font-weight: 700;
    }

    .hero-stat span {
      font-size: 0.8125rem;
      color: var(--text-weak);
    }

    /* ===== Section 通用 ===== */
    .section {
      padding: 4rem 0;
    }

    @media (min-width: 1024px) {
      .section {
        padding: 5.5rem 0;
      }
    }

    .section-head {
      max-width: 720px;
      margin-bottom: 3rem;
    }

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

    .section-tag {
      display: inline-block;
      font-size: 0.8125rem;
      font-weight: 600;
      color: var(--accent-green);
      letter-spacing: 0.08em;
      margin-bottom: 0.75rem;
    }

    .section-head h2 {
      font-size: 1.5rem;
      font-weight: 700;
      line-height: 1.3;
      margin-bottom: 1rem;
      color: var(--text-main);
    }

    @media (min-width: 1024px) {
      .section-head h2 {
        font-size: 2.25rem;
      }
    }

    .section-head p {
      color: var(--text-sub);
      font-size: 0.9375rem;
      line-height: 1.8;
    }

    /* ===== 玻璃卡片 ===== */
    .glass-card {
      background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
      border: 1px solid rgba(255, 255, 255, 0.08);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      transition: all 0.3s ease;
    }

    .glass-card:hover {
      border-color: rgba(0, 229, 160, 0.35);
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }

    /* ===== 顶部长卡 ===== */
    .long-card {
      display: grid;
      grid-template-columns: 1fr;
      gap: 2rem;
      padding: 2rem;
      overflow: hidden;
      background:
        linear-gradient(135deg, rgba(30, 111, 255, 0.12), rgba(0, 229, 160, 0.05)),
        linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
    }

    @media (min-width: 1024px) {
      .long-card {
        grid-template-columns: 1.1fr 0.9fr;
        padding: 3rem;
        align-items: center;
      }
    }

    .long-card-image {
      border-radius: var(--radius-card);
      overflow: hidden;
      position: relative;
      min-height: 240px;
    }

    .long-card-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      position: absolute;
      inset: 0;
    }

    .long-card-content h3 {
      font-size: 1.375rem;
      font-weight: 700;
      line-height: 1.4;
      margin-bottom: 1rem;
    }

    .long-card-content p {
      color: var(--text-sub);
      font-size: 0.9375rem;
      line-height: 1.8;
      margin-bottom: 1.5rem;
    }

    .long-card-points {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1rem;
    }

    .long-card-points li {
      display: flex;
      align-items: center;
      gap: 0.625rem;
      font-size: 0.875rem;
      color: var(--text-main);
      padding: 0.75rem 1rem;
      background: rgba(255, 255, 255, 0.04);
      border-radius: 10px;
      border: 1px solid rgba(255, 255, 255, 0.06);
    }

    .long-card-points li::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--accent-green);
      flex-shrink: 0;
      box-shadow: 0 0 8px rgba(0, 229, 160, 0.6);
    }

    /* ===== 筛选标签 ===== */
    .filter-bar {
      display: flex;
      gap: 0.75rem;
      flex-wrap: wrap;
      margin-bottom: 2rem;
    }

    .tag-btn {
      display: inline-block;
      padding: 0.5rem 1.25rem;
      border-radius: var(--radius-full);
      font-size: 0.8125rem;
      font-weight: 500;
      color: var(--text-sub);
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.08);
      cursor: pointer;
      transition: all 0.3s ease;
    }

    .tag-btn:hover {
      color: var(--text-main);
      border-color: rgba(0, 229, 160, 0.35);
      background: rgba(0, 229, 160, 0.08);
    }

    .tag-btn.active {
      color: #062A22;
      background: var(--accent-green);
      border-color: var(--accent-green);
      font-weight: 600;
      box-shadow: var(--shadow-glow);
    }

    /* ===== 信息卡片网格 ===== */
    .card-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 1.5rem;
    }

    @media (min-width: 640px) {
      .card-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (min-width: 1024px) {
      .card-grid {
        grid-template-columns: repeat(3, 1fr);
      }
    }

    .info-card {
      display: flex;
      flex-direction: column;
      overflow: hidden;
      background: linear-gradient(135deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.02));
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-card);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      box-shadow: var(--shadow-card);
      transition: all 0.3s ease;
    }

    .info-card:hover {
      border-color: rgba(0, 229, 160, 0.35);
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }

    .info-card-image {
      position: relative;
      aspect-ratio: 16 / 9;
      overflow: hidden;
    }

    .info-card-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

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

    .info-card-image .img-tag {
      position: absolute;
      top: 0.75rem;
      left: 0.75rem;
      background: rgba(10, 26, 47, 0.75);
      backdrop-filter: blur(8px);
      color: var(--accent-green);
      font-size: 0.75rem;
      font-weight: 500;
      padding: 0.25rem 0.75rem;
      border-radius: var(--radius-full);
      border: 1px solid rgba(0, 229, 160, 0.25);
    }

    .info-card-content {
      padding: 1.5rem;
      display: flex;
      flex-direction: column;
      flex: 1;
      gap: 0.5rem;
    }

    .info-card-content h3 {
      font-size: 1.125rem;
      font-weight: 600;
      line-height: 1.4;
      color: var(--text-main);
    }

    .info-card-content p {
      font-size: 0.875rem;
      line-height: 1.75;
      color: var(--text-sub);
      flex: 1;
    }

    .info-card-link {
      display: inline-flex;
      align-items: center;
      gap: 0.375rem;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--accent-green);
      margin-top: 0.75rem;
      transition: gap 0.3s ease;
    }

    .info-card-link:hover {
      gap: 0.625rem;
    }

    /* ===== 窄幅 CTA 条 ===== */
    .cta-bar {
      background: linear-gradient(135deg, rgba(0, 229, 160, 0.12), rgba(30, 111, 255, 0.15));
      border: 1px solid rgba(0, 229, 160, 0.2);
      border-radius: 20px;
      padding: 1.5rem 2rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1.5rem;
      flex-wrap: wrap;
    }

    .cta-bar h3 {
      font-size: 1.125rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .cta-bar p {
      color: var(--text-sub);
      font-size: 0.875rem;
      margin-top: 0.25rem;
    }

    /* ===== FAQ ===== */
    .faq-wrap {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 0.875rem;
    }

    .faq-item {
      background: linear-gradient(135deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.02));
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-card);
      overflow: hidden;
      transition: all 0.3s ease;
    }

    .faq-item.open {
      border-color: rgba(0, 229, 160, 0.35);
    }

    .faq-q {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      padding: 1.25rem 1.5rem;
      background: transparent;
      border: none;
      color: var(--text-main);
      font-size: 1.0625rem;
      font-weight: 600;
      text-align: left;
      cursor: pointer;
      transition: background 0.3s ease;
    }

    .faq-q:hover {
      background: rgba(255, 255, 255, 0.04);
    }

    .faq-icon {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      background: rgba(0, 229, 160, 0.12);
      color: var(--accent-green);
      flex-shrink: 0;
      font-size: 1.125rem;
      line-height: 1;
      transition: transform 0.3s ease, background 0.3s ease;
    }

    .faq-item.open .faq-icon {
      transform: rotate(45deg);
      background: rgba(0, 229, 160, 0.2);
    }

    .faq-a {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
    }

    .faq-a-inner {
      padding: 0 1.5rem 1.25rem;
      color: var(--text-sub);
      font-size: 0.9375rem;
      line-height: 1.8;
    }

    /* ===== 底部 CTA ===== */
    .cta-section {
      padding: 4rem 0 5rem;
    }

    .cta-card {
      background: linear-gradient(135deg, #0F2440 0%, #1E6FFF 100%);
      border-radius: 24px;
      padding: 3rem 2rem;
      text-align: center;
      position: relative;
      overflow: hidden;
      box-shadow: 0 8px 48px rgba(30, 111, 255, 0.25);
    }

    @media (min-width: 768px) {
      .cta-card {
        padding: 4rem 3rem;
      }
    }

    .cta-card::before {
      content: "";
      position: absolute;
      top: -40%;
      right: -20%;
      width: 320px;
      height: 320px;
      background: rgba(0, 229, 160, 0.15);
      border-radius: 50%;
      filter: blur(60px);
      pointer-events: none;
    }

    .cta-card h2 {
      font-size: 1.75rem;
      font-weight: 800;
      margin-bottom: 1rem;
      position: relative;
      z-index: 1;
    }

    @media (min-width: 1024px) {
      .cta-card h2 {
        font-size: 2.25rem;
      }
    }

    .cta-card p {
      color: rgba(242, 247, 251, 0.85);
      font-size: 0.9375rem;
      margin-bottom: 2rem;
      position: relative;
      z-index: 1;
    }

    .cta-card .btn-wrap {
      display: flex;
      justify-content: center;
      gap: 1rem;
      flex-wrap: wrap;
      position: relative;
      z-index: 1;
    }

    .cta-trust {
      display: flex;
      justify-content: center;
      gap: 2rem;
      flex-wrap: wrap;
      margin-top: 2.5rem;
      position: relative;
      z-index: 1;
    }

    .cta-trust span {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      font-size: 0.8125rem;
      color: rgba(242, 247, 251, 0.7);
    }

    .cta-trust span::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--accent-green);
      box-shadow: 0 0 8px rgba(0, 229, 160, 0.6);
    }

    /* ===== 统计条 ===== */
    .stats-strip {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      background: rgba(15, 36, 64, 0.6);
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 1.5rem;
      padding: 2rem 0;
      text-align: center;
    }

    @media (min-width: 768px) {
      .stats-grid {
        grid-template-columns: repeat(4, 1fr);
      }
    }

    .stat-item strong {
      font-family: "DIN Alternate", Tahoma, sans-serif;
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--accent-green);
      display: block;
      line-height: 1.3;
    }

    .stat-item span {
      font-size: 0.8125rem;
      color: var(--text-sub);
      margin-top: 0.25rem;
      display: block;
    }

    /* ===== 页脚 ===== */
    .site-footer {
      background: #071522;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 3rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 2rem;
      padding-bottom: 2.5rem;
    }

    @media (min-width: 640px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (min-width: 1024px) {
      .footer-grid {
        grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
        gap: 3rem;
      }
    }

    .footer-brand p {
      color: var(--text-sub);
      font-size: 0.875rem;
      line-height: 1.8;
      margin-top: 1rem;
      max-width: 360px;
    }

    .footer-col h4 {
      font-size: 0.9375rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 1rem;
    }

    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.625rem;
    }

    .footer-col ul li {
      color: var(--text-sub);
      font-size: 0.875rem;
    }

    .footer-col ul a {
      color: var(--text-sub);
      font-size: 0.875rem;
      transition: color 0.3s ease;
    }

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

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding: 1.25rem 0;
      background: rgba(5, 18, 30, 0.5);
    }

    .footer-bottom .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      flex-wrap: wrap;
    }

    .footer-bottom span {
      color: var(--text-weak);
      font-size: 0.8125rem;
    }

    .footer-bottom a {
      color: var(--text-sub);
    }

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

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
      .header-inner {
        gap: 1rem;
      }

      .search-wrap {
        order: 3;
        max-width: 100%;
        flex-basis: 100%;
      }

      .main-nav {
        order: 2;
        margin-left: auto;
      }

      .nav-cta {
        order: 2;
      }

      .page-hero h1 {
        font-size: 2rem;
      }
    }

    @media (max-width: 640px) {
      .header-inner {
        min-height: 64px;
        gap: 0.75rem;
      }

      .logo {
        font-size: 1rem;
        gap: 0.5rem;
      }

      .logo-dot {
        width: 32px;
        height: 32px;
        font-size: 0.875rem;
      }

      .main-nav {
        gap: 0.25rem;
        order: 2;
        margin-right: 0;
        overflow-x: auto;
        max-width: 100%;
        -webkit-overflow-scrolling: touch;
      }

      .nav-link {
        padding: 0.375rem 0.75rem;
        font-size: 0.875rem;
      }

      .nav-cta {
        display: none;
      }

      .search-wrap {
        order: 3;
        flex-basis: 100%;
      }

      .page-hero {
        min-height: 380px;
      }

      .page-hero h1 {
        font-size: 1.75rem;
      }

      .page-hero .hero-sub {
        font-size: 0.9375rem;
      }

      .section {
        padding: 3rem 0;
      }

      .long-card {
        padding: 1.25rem;
      }

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

      .cta-bar {
        padding: 1.25rem;
        text-align: center;
        justify-content: center;
      }

      .cta-card {
        padding: 2rem 1.25rem;
      }

      .cta-card h2 {
        font-size: 1.5rem;
      }

      .hero-stats {
        gap: 1.25rem;
      }

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

/* roulang page: category2 */
:root {
      --bg-primary: #0A1A2F;
      --bg-secondary: #0F2440;
      --bg-card-hover: #1B3B5C;
      --brand-blue: #1E6FFF;
      --accent-green: #00E5A0;
      --text-primary: #F2F7FB;
      --text-secondary: #9DB0C3;
      --text-muted: #5F7A93;
      --border-glass: rgba(255, 255, 255, 0.08);
      --radius-card: 16px;
      --radius-btn: 10px;
      --radius-search: 999px;
      --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.25);
      --shadow-hover: 0 8px 40px rgba(30, 111, 255, 0.18);
      --glow-green: 0 0 18px rgba(0, 229, 160, 0.5);
      --font-title: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
    }

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

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

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

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

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 1.5rem;
    }

    /* ---- 导航 ---- */
    .main-nav-wrap {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(10, 26, 47, 0.85);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-glass);
      transition: background 0.3s ease;
    }

    .main-nav-wrap.scrolled {
      background: rgba(7, 21, 34, 0.9);
      box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    }

    .main-nav {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      height: 72px;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      font-size: 1.125rem;
      font-weight: 800;
      color: var(--text-primary);
      white-space: nowrap;
      background: none;
      border: none;
      padding: 0;
      flex-shrink: 0;
    }

    .logo-dot {
      background: linear-gradient(135deg, var(--brand-blue), var(--accent-green));
      border-radius: 10px;
      width: 36px;
      height: 36px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #ffffff;
      font-weight: 800;
      font-size: 1rem;
      box-shadow: 0 0 12px rgba(30, 111, 255, 0.4);
    }

    .search-wrap {
      flex: 1;
      max-width: 520px;
      position: relative;
      margin: 0 1rem;
    }

    .search-input {
      width: 100%;
      height: 44px;
      border-radius: var(--radius-search);
      border: 1px solid rgba(255, 255, 255, 0.1);
      background: rgba(255, 255, 255, 0.06);
      padding: 0 1rem 0 2.75rem;
      color: var(--text-primary);
      font-size: 0.875rem;
      outline: none;
      transition: all 0.3s ease;
    }

    .search-input::placeholder {
      color: var(--text-muted);
    }

    .search-input:focus {
      box-shadow: 0 0 0 4px rgba(30, 111, 255, 0.25);
      background: rgba(255, 255, 255, 0.1);
      border-color: rgba(30, 111, 255, 0.4);
    }

    .search-input:focus::placeholder {
      opacity: 0.5;
    }

    .search-icon {
      position: absolute;
      left: 1rem;
      top: 50%;
      transform: translateY(-50%);
      width: 18px;
      height: 18px;
      color: var(--text-muted);
      pointer-events: none;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0.25rem;
      flex-shrink: 0;
    }

    .nav-link {
      display: inline-block;
      padding: 0.375rem 1rem;
      border-radius: var(--radius-btn);
      color: var(--text-secondary);
      font-weight: 500;
      font-size: 0.9375rem;
      transition: all 0.25s ease;
      border: 1px solid transparent;
      white-space: nowrap;
    }

    .nav-link:hover {
      color: var(--text-primary);
      background: rgba(255, 255, 255, 0.06);
    }

    .nav-link.active {
      color: var(--accent-green) !important;
      background: rgba(0, 229, 160, 0.1) !important;
      border-color: rgba(0, 229, 160, 0.25) !important;
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      background: var(--accent-green);
      color: #062A22;
      font-weight: 700;
      font-size: 0.875rem;
      padding: 0.5rem 1.25rem;
      border-radius: var(--radius-btn);
      transition: all 0.3s ease;
      box-shadow: 0 0 12px rgba(0, 229, 160, 0.35);
      white-space: nowrap;
      flex-shrink: 0;
    }

    .nav-cta:hover {
      transform: scale(1.02);
      box-shadow: 0 0 20px rgba(0, 229, 160, 0.55);
      color: #062A22;
    }

    .nav-cta:active {
      transform: scale(0.98);
    }

    /* ---- 分类 Hero ---- */
    .cat-hero {
      background: linear-gradient(160deg, rgba(10, 26, 47, 0.92) 30%, rgba(30, 111, 255, 0.35) 100%),
        url('/assets/images/backpic/back-2.webp') center 40% / cover no-repeat;
      padding: 4rem 0 3rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      position: relative;
    }

    .cat-hero::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 80px;
      background: linear-gradient(180deg, transparent, var(--bg-primary));
      pointer-events: none;
    }

    .cat-hero-inner {
      max-width: 860px;
    }

    .cat-tag {
      display: inline-block;
      background: rgba(0, 229, 160, 0.12);
      color: var(--accent-green);
      border: 1px solid rgba(0, 229, 160, 0.3);
      padding: 0.25rem 0.875rem;
      border-radius: 4px;
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 0.08em;
      margin-bottom: 1rem;
      text-transform: uppercase;
    }

    .cat-hero h1 {
      font-size: 2.5rem;
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 1rem;
      color: var(--text-primary);
    }

    .cat-hero p {
      color: var(--text-secondary);
      font-size: 1.0625rem;
      line-height: 1.8;
      max-width: 680px;
    }

    .cat-hero-actions {
      display: flex;
      gap: 1rem;
      margin-top: 1.5rem;
      flex-wrap: wrap;
    }

    /* ---- 主体左右分栏 ---- */
    .cat-layout {
      padding: 3.5rem 0 1rem;
    }

    .cat-layout-grid {
      display: grid;
      grid-template-columns: 1fr 320px;
      gap: 2.5rem;
      align-items: start;
    }

    .cat-section-title {
      font-size: 1.625rem;
      font-weight: 700;
      margin-bottom: 0.5rem;
    }

    .cat-section-desc {
      color: var(--text-secondary);
      font-size: 0.9375rem;
      margin-bottom: 1.5rem;
      max-width: 600px;
    }

    /* 筛选标签 */
    .filter-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 0.5rem;
      margin-bottom: 2rem;
    }

    .filter-tag {
      display: inline-block;
      padding: 0.25rem 0.875rem;
      border-radius: 999px;
      border: 1px solid rgba(255, 255, 255, 0.1);
      background: rgba(255, 255, 255, 0.04);
      color: var(--text-secondary);
      font-size: 0.8125rem;
      transition: all 0.2s ease;
    }

    .filter-tag:hover {
      border-color: rgba(0, 229, 160, 0.35);
      color: var(--accent-green);
      background: rgba(0, 229, 160, 0.06);
    }

    .filter-tag.active {
      background: rgba(0, 229, 160, 0.12);
      color: var(--accent-green);
      border-color: rgba(0, 229, 160, 0.35);
    }

    /* 内容卡片 */
    .cat-card-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
    }

    .cat-card {
      background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-card);
      overflow: hidden;
      transition: all 0.3s ease;
      box-shadow: var(--shadow-card);
      display: flex;
      flex-direction: column;
    }

    .cat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(0, 229, 160, 0.35);
    }

    .cat-card-img {
      position: relative;
      aspect-ratio: 16 / 10;
      overflow: hidden;
    }

    .cat-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

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

    .cat-card-img::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 60%, rgba(10, 26, 47, 0.35) 100%);
      pointer-events: none;
    }

    .cat-card-body {
      padding: 1.25rem;
      flex: 1;
      display: flex;
      flex-direction: column;
    }

    .cat-card-body h3 {
      font-size: 1.0625rem;
      font-weight: 600;
      margin-bottom: 0.5rem;
      line-height: 1.4;
      color: var(--text-primary);
    }

    .cat-card-body p {
      color: var(--text-secondary);
      font-size: 0.875rem;
      line-height: 1.7;
      flex: 1;
    }

    /* 右侧索引 */
    .cat-sidebar {
      position: sticky;
      top: 96px;
      display: flex;
      flex-direction: column;
      gap: 1.25rem;
    }

    .side-card {
      background: linear-gradient(135deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.01));
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-card);
      padding: 1.5rem;
    }

    .side-card h4 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 1rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
      color: var(--text-primary);
    }

    .side-card h4::before {
      content: '';
      width: 4px;
      height: 18px;
      background: var(--accent-green);
      border-radius: 2px;
      flex-shrink: 0;
    }

    .side-list {
      list-style: none;
    }

    .side-list li {
      margin-bottom: 0.25rem;
    }

    .side-list a {
      color: var(--text-secondary);
      font-size: 0.875rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 0.35rem 0;
      transition: all 0.2s ease;
      border-radius: 6px;
    }

    .side-list a:hover {
      color: var(--accent-green);
      background: rgba(0, 229, 160, 0.04);
      padding-left: 0.25rem;
    }

    .side-list a .dot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.15);
      flex-shrink: 0;
      transition: all 0.2s ease;
    }

    .side-list a:hover .dot {
      background: var(--accent-green);
      box-shadow: 0 0 8px rgba(0, 229, 160, 0.5);
    }

    .side-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 0.5rem;
    }

    .side-tag {
      display: inline-block;
      padding: 0.2rem 0.75rem;
      border-radius: 999px;
      border: 1px solid rgba(255, 255, 255, 0.1);
      background: rgba(255, 255, 255, 0.03);
      color: var(--text-secondary);
      font-size: 0.8125rem;
      transition: all 0.2s ease;
    }

    .side-tag:hover {
      color: var(--accent-green);
      border-color: rgba(0, 229, 160, 0.3);
    }

    .side-update {
      font-size: 0.8125rem;
      color: var(--text-secondary);
      line-height: 1.8;
    }

    .side-update strong {
      color: var(--accent-green);
      font-weight: 600;
    }

    /* ---- CTA 条 ---- */
    .cta-bar {
      background: linear-gradient(135deg, #0F2440 0%, rgba(30, 111, 255, 0.55) 100%);
      border-radius: 16px;
      padding: 1.75rem 2rem;
      margin: 2.5rem 0 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1.5rem;
      border: 1px solid rgba(255, 255, 255, 0.1);
      flex-wrap: wrap;
    }

    .cta-bar h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 0.25rem;
      color: var(--text-primary);
    }

    .cta-bar p {
      color: var(--text-secondary);
      font-size: 0.875rem;
      line-height: 1.6;
    }

    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--accent-green);
      color: #062A22;
      font-weight: 700;
      padding: 0.625rem 1.5rem;
      border-radius: var(--radius-btn);
      transition: all 0.3s ease;
      box-shadow: 0 0 14px rgba(0, 229, 160, 0.35);
      white-space: nowrap;
      font-size: 0.9375rem;
      line-height: 1.5;
    }

    .btn-primary:hover {
      transform: scale(1.02);
      box-shadow: 0 0 24px rgba(0, 229, 160, 0.55);
      color: #062A22;
    }

    .btn-primary:active {
      transform: scale(0.98);
    }

    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.2);
      color: var(--text-primary);
      font-weight: 600;
      padding: 0.625rem 1.5rem;
      border-radius: var(--radius-btn);
      transition: all 0.3s ease;
      white-space: nowrap;
      font-size: 0.9375rem;
      line-height: 1.5;
    }

    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: rgba(255, 255, 255, 0.35);
      color: var(--text-primary);
    }

    .btn-outline:active {
      transform: scale(0.98);
    }

    /* ---- FAQ ---- */
    .faq-section {
      padding: 4rem 0 2rem;
    }

    .faq-head {
      text-align: center;
      margin-bottom: 2.5rem;
    }

    .faq-head h2 {
      font-size: 1.75rem;
      font-weight: 700;
      margin-bottom: 0.5rem;
      color: var(--text-primary);
    }

    .faq-head p {
      color: var(--text-secondary);
      font-size: 0.9375rem;
    }

    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }

    .faq-item {
      background: linear-gradient(135deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.01));
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-card);
      padding: 1.25rem 1.5rem;
      transition: border-color 0.3s ease;
    }

    .faq-item.open {
      border-color: rgba(0, 229, 160, 0.25);
    }

    .faq-q {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 600;
      font-size: 1rem;
      cursor: pointer;
      border: none;
      background: none;
      color: var(--text-primary);
      font-family: inherit;
      padding: 0;
      width: 100%;
      text-align: left;
      line-height: 1.5;
    }

    .faq-q:focus-visible {
      outline: 2px solid rgba(30, 111, 255, 0.6);
      outline-offset: 4px;
      border-radius: 4px;
    }

    .faq-icon {
      width: 24px;
      height: 24px;
      flex-shrink: 0;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      border: 1px solid rgba(255, 255, 255, 0.15);
      color: var(--text-secondary);
      transition: transform 0.3s ease, border-color 0.3s ease, color 0.3s ease;
      font-size: 1rem;
      margin-left: 1rem;
    }

    .faq-item.open .faq-icon {
      transform: rotate(45deg);
      border-color: rgba(0, 229, 160, 0.4);
      color: var(--accent-green);
    }

    .faq-a {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.3s ease;
      color: var(--text-secondary);
      font-size: 0.9375rem;
      line-height: 1.8;
    }

    .faq-item.open .faq-a {
      max-height: 320px;
      padding-top: 0.75rem;
    }

    /* ---- 底部 CTA ---- */
    .bottom-cta-wrap {
      padding: 2rem 0 4rem;
    }

    .bottom-cta {
      background: linear-gradient(135deg, #0F2440 0%, #1E6FFF 100%);
      border-radius: 24px;
      padding: 3.5rem;
      text-align: center;
      border: 1px solid rgba(255, 255, 255, 0.08);
      box-shadow: 0 0 40px rgba(30, 111, 255, 0.15);
      position: relative;
      overflow: hidden;
    }

    .bottom-cta::before {
      content: '';
      position: absolute;
      top: -60px;
      right: -60px;
      width: 180px;
      height: 180px;
      border-radius: 50%;
      background: rgba(0, 229, 160, 0.15);
      filter: blur(40px);
      pointer-events: none;
    }

    .bottom-cta h2 {
      font-size: 1.875rem;
      font-weight: 800;
      margin-bottom: 0.75rem;
      color: #ffffff;
      line-height: 1.3;
    }

    .bottom-cta p {
      color: rgba(255, 255, 255, 0.8);
      margin-bottom: 1.5rem;
      font-size: 1rem;
      max-width: 480px;
      margin-left: auto;
      margin-right: auto;
      line-height: 1.8;
    }

    .btn-white {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: #ffffff;
      color: #0A1A2F;
      font-weight: 700;
      padding: 0.75rem 2rem;
      border-radius: var(--radius-btn);
      transition: all 0.3s ease;
      font-size: 1rem;
    }

    .btn-white:hover {
      transform: scale(1.02);
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
      color: #0A1A2F;
    }

    .btn-white:active {
      transform: scale(0.98);
    }

    /* ---- 页脚 ---- */
    .site-footer {
      background: #071522;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 3rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 2rem;
      padding-bottom: 2.5rem;
    }

    .footer-brand .logo {
      margin-bottom: 1rem;
      display: inline-flex;
    }

    .footer-brand p {
      font-size: 0.875rem;
      color: var(--text-secondary);
      max-width: 360px;
      line-height: 1.8;
      margin-top: 0.75rem;
    }

    .footer-col h4 {
      font-size: 0.9375rem;
      font-weight: 600;
      margin-bottom: 1rem;
      color: var(--text-primary);
    }

    .footer-col ul {
      list-style: none;
    }

    .footer-col li {
      margin-bottom: 0.5rem;
    }

    .footer-col a {
      color: var(--text-secondary);
      font-size: 0.875rem;
      transition: color 0.2s ease;
    }

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

    .footer-col li span {
      color: var(--text-secondary);
      font-size: 0.875rem;
      display: block;
      line-height: 1.7;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding: 1.25rem 0;
      text-align: center;
      color: var(--text-muted);
      font-size: 0.8125rem;
    }

    .footer-bottom a {
      color: var(--text-secondary);
      transition: color 0.2s ease;
    }

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

    /* ---- 响应式 ---- */
    @media (max-width: 1024px) {
      .cat-layout-grid {
        grid-template-columns: 1fr;
      }

      .cat-sidebar {
        position: static;
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
      }

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

      .cta-bar {
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
      }
    }

    @media (max-width: 768px) {
      .main-nav {
        flex-wrap: wrap;
        height: auto;
        padding: 0.75rem 0;
        gap: 0.75rem;
      }

      .search-wrap {
        order: 3;
        flex-basis: 100%;
        max-width: 100%;
        margin: 0;
      }

      .nav-links {
        order: 2;
      }

      .nav-cta {
        order: 2;
      }

      .cat-hero {
        padding: 3rem 0 2.25rem;
      }

      .cat-hero h1 {
        font-size: 1.75rem;
      }

      .cat-hero p {
        font-size: 0.9375rem;
      }

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

      .cat-sidebar {
        grid-template-columns: 1fr;
      }

      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1.5rem;
      }

      .cta-bar {
        padding: 1.5rem;
      }

      .bottom-cta {
        padding: 2.5rem 1.5rem;
      }

      .bottom-cta h2 {
        font-size: 1.5rem;
      }

      .faq-section {
        padding: 3rem 0 1.5rem;
      }
    }

    @media (max-width: 520px) {
      .nav-links {
        gap: 0;
      }

      .nav-link {
        padding: 0.375rem 0.625rem;
        font-size: 0.8125rem;
      }

      .nav-cta {
        padding: 0.4375rem 0.875rem;
        font-size: 0.8125rem;
      }

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

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

      .cat-hero-actions .btn-primary,
      .cat-hero-actions .btn-outline {
        width: 100%;
      }

      .cat-layout {
        padding: 2rem 0 0.5rem;
      }
    }