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

:root {
  --bg: #0a0a14;
  --bg-surface: #14121c;
  --bg-elevated: #1c1928;
  --accent: #ffd60a;
  --accent-bright: #ffe14d;
  --accent-deep: #d4a900;
  --accent-soft: rgba(255, 214, 10, 0.12);
  --accent-glow: rgba(255, 214, 10, 0.35);
  --text: #f5f5f0;
  --text-secondary: #b8b3a8;
  --text-tertiary: #6b665d;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 214, 10, 0.3);
  --gradient-text: linear-gradient(135deg, #ffe14d 0%, #ffd60a 50%, #d4a900 100%);
  --gradient-accent: linear-gradient(135deg, #ffe14d 0%, #ffd60a 100%);
  --gradient-hero: radial-gradient(ellipse at 30% 20%, rgba(255, 214, 10, 0.15) 0%, transparent 50%),
                   radial-gradient(ellipse at 70% 80%, rgba(212, 169, 0, 0.12) 0%, transparent 50%);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-glow: 0 8px 32px rgba(255, 214, 10, 0.18);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: var(--gradient-hero);
  z-index: -1;
  pointer-events: none;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
ul { list-style: none; }
button { background: none; border: none; cursor: pointer; font-family: inherit; color: inherit; }

::selection { background: var(--accent); color: #1a1300; }
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--accent-deep); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

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

/* ============ Nav ============ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 20, 0.7);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}
.nav.scrolled {
  background: rgba(10, 10, 20, 0.92);
  border-bottom-color: var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 32px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: var(--gradient-accent);
  border-radius: 10px;
  color: #1a1300;
  font-size: 20px;
  box-shadow: 0 4px 14px var(--accent-glow);
}
.logo-mark .iconfont { font-size: 22px; }
.logo b { color: var(--accent); font-weight: 800; }
.nav-menu {
  display: flex;
  gap: 8px;
  margin-left: auto;
  margin-right: 24px;
}
.nav-menu a {
  padding: 8px 16px;
  font-size: 15px;
  color: var(--text-secondary);
  border-radius: 8px;
  transition: var(--transition);
}
.nav-menu a:hover, .nav-menu a.active {
  color: var(--accent);
  background: var(--accent-soft);
}
.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-toggle {
  display: none;
  font-size: 22px;
  padding: 8px;
  color: var(--text);
}

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 10px;
  transition: var(--transition);
  cursor: pointer;
  white-space: nowrap;
}
.btn .iconfont { font-size: 16px; }
.btn-primary {
  background: var(--gradient-accent);
  color: #1a1300;
  box-shadow: 0 4px 18px var(--accent-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px var(--accent-glow);
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-strong);
}
.btn-ghost:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}
.btn-lg { padding: 14px 30px; font-size: 15px; }
.btn-sm { padding: 8px 16px; font-size: 13px; }

/* ============ Section common ============ */
.section-pad { padding: 80px 0; }
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}
.eyebrow {
  display: inline-block;
  padding: 6px 14px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 999px;
  margin-bottom: 16px;
  border: 1px solid var(--border-strong);
}
.section-head h2 {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 16px;
}
.section-head p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
}
.text-gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.text-accent { color: var(--accent); }
.section-foot { text-align: center; margin-top: 48px; }

/* ============ Hero ============ */
.hero { padding: 80px 0 60px; position: relative; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
}
.hero .eyebrow { margin-bottom: 24px; }
.hero h1 {
  font-size: 56px;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 24px;
}
.hero-lead {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 540px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat b {
  display: block;
  font-size: 26px;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 4px;
}
.stat span {
  font-size: 13px;
  color: var(--text-tertiary);
}
.hero-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}
.hero-visual img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 10, 20, 0.4) 0%, transparent 50%);
  pointer-events: none;
}
.float-card {
  position: absolute;
  background: rgba(28, 25, 40, 0.85);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 2;
}
.float-card.top { top: 24px; left: 24px; }
.float-card.bottom { bottom: 24px; right: 24px; }
.float-card .fc-label { font-size: 11px; color: var(--text-tertiary); margin-bottom: 2px; }
.float-card .fc-value { font-size: 14px; font-weight: 700; color: var(--text); }
.float-card .dot {
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--accent);
  animation: pulse 1.8s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

/* ============ Features ============ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
  background: var(--bg-elevated);
  box-shadow: 0 12px 40px rgba(255, 214, 10, 0.1);
}
.feature-card:hover::before { transform: scaleX(1); }
.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--accent-soft);
  border-radius: 14px;
  color: var(--accent);
  font-size: 26px;
  margin-bottom: 20px;
  border: 1px solid var(--border-strong);
}
.feature-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============ Process ============ */
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
}
.process-grid::before {
  content: "";
  position: absolute;
  top: 32px;
  left: 16.66%;
  right: 16.66%;
  height: 2px;
  background: linear-gradient(to right, transparent, var(--accent-deep), transparent);
  z-index: 0;
}
.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
}
.process-num {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: var(--bg-surface);
  border: 2px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 800;
  color: var(--accent);
  box-shadow: 0 0 24px var(--accent-glow);
}
.process-step h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}
.process-step p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 280px;
  margin: 0 auto;
}

/* ============ Gallery ============ */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.gallery-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 1;
  background: var(--bg-surface);
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.gallery-item:hover img { transform: scale(1.08); }
.gallery-item::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 10, 20, 0.6) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.gallery-item:hover::after { opacity: 1; }

/* ============ Usecase ============ */
.usecase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.usecase-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}
.usecase-body { padding: 40px; }
.usecase-body h3 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 14px;
}
.usecase-body > p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}
.usecase-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
}
.usecase-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text);
}
.usecase-list li::before {
  content: "→";
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
}

/* ============ News ============ */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.news-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
  box-shadow: 0 12px 40px rgba(255, 214, 10, 0.08);
}
.nc-img {
  display: block;
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}
.nc-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.news-card:hover .nc-img img { transform: scale(1.06); }
.nc-cat {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 10px;
  background: rgba(255, 214, 10, 0.9);
  color: #1a1300;
  font-size: 11px;
  font-weight: 700;
  border-radius: 6px;
}
.nc-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.nc-body h3 {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 8px;
}
.nc-body h3 a:hover { color: var(--accent); }
.nc-body p {
  font-size: 13px;
  color: var(--text-tertiary);
  line-height: 1.6;
  margin-bottom: 14px;
  flex: 1;
}
.nc-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-tertiary);
}
.nc-meta .dot {
  width: 3px; height: 3px;
  background: var(--text-tertiary);
  border-radius: 50%;
}
.nc-meta .iconfont { font-size: 13px; color: var(--accent); }

/* ============ FAQ ============ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: var(--border-strong); }
.faq-q {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  font-size: 16px;
  font-weight: 600;
  text-align: left;
  transition: var(--transition);
}
.faq-q:hover { color: var(--accent); }
.faq-q .icon {
  flex-shrink: 0;
  margin-left: 16px;
  font-size: 22px;
  color: var(--accent);
  transition: transform 0.3s ease;
}
.faq-item.open .faq-q .icon { transform: rotate(45deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-item.open .faq-a { max-height: 300px; }
.faq-a p {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============ CTA ============ */
.cta-banner {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, var(--accent-soft) 0%, transparent 70%);
  pointer-events: none;
}
.cta-banner h2 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 14px;
  position: relative;
}
.cta-banner p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 28px;
  position: relative;
}
.cta-banner .hero-actions {
  justify-content: center;
  margin-bottom: 0;
}

/* ============ Footer ============ */
.footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding: 56px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 420px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--accent);
}
.footer-col ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
}
.footer-col li a {
  font-size: 13px;
  color: var(--text-secondary);
  transition: var(--transition);
}
.footer-col li a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  text-align: center;
  font-size: 12px;
  color: var(--text-tertiary);
}
.footer-bottom a { color: var(--text-secondary); }
.footer-bottom a:hover { color: var(--accent); }

/* ============ Page Hero ============ */
.page-hero {
  padding: 56px 0 40px;
  background: linear-gradient(to bottom, var(--accent-soft), transparent);
  border-bottom: 1px solid var(--border);
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-tertiary);
  margin-bottom: 20px;
}
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .iconfont { font-size: 12px; opacity: 0.6; }
.page-hero h1 {
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.page-hero p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 720px;
}

/* ============ Pagination ============ */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 48px;
}
.pagination a, .pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: var(--transition);
}
.pagination a:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.pagination .current {
  background: var(--gradient-accent);
  color: #1a1300;
  border-color: transparent;
}

/* ============ Article Layout ============ */
.article-layout { padding: 48px 0 80px; }
.article-layout-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 48px;
  align-items: start;
}
.article-wrap {
  min-width: 0;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}
.article-sidebar {
  position: sticky;
  top: 96px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.widget {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px;
}
.widget h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.widget h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 30px;
  height: 2px;
  background: var(--accent);
}
.popular-list { display: flex; flex-direction: column; gap: 14px; }
.popular-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 6px 0;
  transition: var(--transition);
}
.popular-item:hover h5 { color: var(--accent); }
.popular-item .num {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 6px;
}
.popular-item h5 {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 4px;
  transition: color var(--transition);
}
.popular-item .pm { font-size: 11px; color: var(--text-tertiary); }
.widget-cta { text-align: center; }
.widget-cta p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

/* article body */
.article-header { margin-bottom: 32px; }
.article-cat {
  display: inline-block;
  padding: 4px 12px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  border-radius: 6px;
  margin-bottom: 14px;
  border: 1px solid var(--border-strong);
}
.article-title {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}
.article-summary {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
  padding: 16px 20px;
  background: var(--bg-surface);
  border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.author { display: flex; align-items: center; gap: 10px; }
.author-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--gradient-accent);
  color: #1a1300;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
}
.author-name { font-size: 14px; font-weight: 600; display: block; }
.author-role { font-size: 12px; color: var(--text-tertiary); }
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-tertiary);
}
.meta-item .iconfont { font-size: 14px; color: var(--accent); }

.article-content { font-size: 16px; line-height: 1.8; color: var(--text); }
.article-content p { margin-bottom: 18px; }
.article-content h2 {
  font-size: 24px;
  font-weight: 800;
  margin: 36px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--accent);
}
.article-content h3 {
  font-size: 19px;
  font-weight: 700;
  margin: 28px 0 12px;
}
.article-content ul, .article-content ol {
  margin: 16px 0 20px 24px;
}
.article-content ul li, .article-content ol li {
  margin-bottom: 8px;
}
.article-content blockquote {
  margin: 20px 0;
  padding: 16px 22px;
  background: var(--bg-surface);
  border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0;
  color: var(--text-secondary);
  font-style: italic;
}
.article-content code {
  background: var(--accent-soft);
  color: var(--accent);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 14px;
  font-family: "SF Mono", Consolas, monospace;
}
.article-content table {
  width: 100%;
  margin: 20px 0;
  border-collapse: collapse;
  background: var(--bg-surface);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.article-content th, .article-content td {
  padding: 12px 16px;
  text-align: left;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
}
.article-content th {
  background: var(--bg-elevated);
  font-weight: 700;
  color: var(--accent);
}
.article-content figure { margin: 24px 0; }
.article-content figure img {
  width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}
.article-content figcaption {
  text-align: center;
  font-size: 13px;
  color: var(--text-tertiary);
  margin-top: 8px;
}

.article-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.article-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  padding: 4px 12px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 12px;
  color: var(--text-secondary);
  transition: var(--transition);
}
.tag:hover { border-color: var(--accent); color: var(--accent); }
.article-share { display: flex; align-items: center; gap: 8px; }
.share-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-tertiary);
  margin-right: 4px;
}
.share-label .iconfont { font-size: 14px; color: var(--accent); }
.share-btn {
  width: 34px; height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: var(--transition);
}
.share-btn .iconfont { font-size: 15px; }
.share-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 32px;
}
.post-nav-item {
  display: block;
  padding: 18px 20px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.post-nav-item:hover {
  border-color: var(--accent);
  background: var(--bg-elevated);
}
.post-nav-item.next { text-align: right; }
.post-nav-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 8px;
}
.post-nav-label .iconfont { font-size: 13px; }
.post-nav-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
}

.related-section { margin-top: 56px; }
.related-section .section-title {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 24px;
}
.related-section .section-title .accent { color: var(--accent); }
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  margin-top: 12px;
}
.news-card-link .iconfont { font-size: 14px; }

/* ============ Responsive ============ */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero h1 { font-size: 44px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid { grid-template-columns: repeat(3, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .article-layout-grid { grid-template-columns: 1fr; gap: 32px; }
  .article-sidebar {
    position: static;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
  .usecase { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .nav-menu, .nav-cta { display: none; }
  .nav-toggle { display: block; }
  .nav-menu.open {
    display: flex;
    position: absolute;
    top: 72px; left: 0; right: 0;
    flex-direction: column;
    background: rgba(10, 10, 20, 0.98);
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    gap: 4px;
  }
  .hero h1 { font-size: 36px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .section-pad { padding: 56px 0; }
  .section-head h2 { font-size: 28px; }
  .features-grid, .process-grid, .gallery-grid, .news-grid, .related-grid {
    grid-template-columns: 1fr;
  }
  .process-grid::before { display: none; }
  .article-sidebar { grid-template-columns: 1fr; }
  .article-wrap { padding: 24px; }
  .post-nav { grid-template-columns: 1fr; }
  .post-nav-item.next { text-align: left; }
  .cta-banner { padding: 40px 24px; }
  .cta-banner h2 { font-size: 24px; }
  .usecase-body { padding: 28px; }
}