/* 基础布局与配色：现代简约工业风 */
:root {
  --bg-main: #050610;
  --bg-elevated: #0d101b;
  --bg-soft: #151827;
  --accent: #39c5ff;
  --accent-soft: rgba(57, 197, 255, 0.18);
  --accent-strong: #47e3ff;
  --border-subtle: rgba(255, 255, 255, 0.06);
  --text-primary: #f5f7ff;
  --text-secondary: #a0a4b8;
  --text-muted: #6c7285;
  --danger: #ff4d4f;
  --success: #52c41a;
  --warning: #faad14;
  --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.65);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-pill: 999px;
  --transition-fast: 0.18s ease-out;
}

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

html,
body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei",
    sans-serif;
  background: radial-gradient(circle at top, #151827 0, #050610 45%, #020308 100%);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}

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

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

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.page {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 20px 20px 40px;
}

/* 顶部导航 */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: linear-gradient(120deg, rgba(11, 16, 35, 0.96), rgba(5, 8, 20, 0.96));
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.04);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(16px);
  position: sticky;
  top: 16px;
  z-index: 20;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: radial-gradient(circle at 20% 0, #47e3ff 0, #39c5ff 35%, #0f172a 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.07),
    0 18px 35px rgba(0, 0, 0, 0.8);
}

.logo-mark span {
  font-size: 18px;
  font-weight: 700;
  color: #050610;
}

.logo-text-main {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.logo-text-sub {
  font-size: 12px;
  color: var(--text-secondary);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

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

.nav-link {
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--text-secondary);
  border: 1px solid transparent;
  transition: background var(--transition-fast), color var(--transition-fast),
    border-color var(--transition-fast), transform var(--transition-fast);
  white-space: nowrap;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(255, 255, 255, 0.04);
  color: var(--accent-strong);
  transform: translateY(-1px);
}

.nav-link.active {
  background: radial-gradient(circle at 0 0, #47e3ff 0, #39c5ff 35%, #1b2035 100%);
  color: #050610;
  border-color: transparent;
  font-weight: 600;
}

.nav-cta {
  padding: 7px 16px;
  border-radius: 999px;
  border: 1px solid rgba(71, 227, 255, 0.6);
  background: radial-gradient(circle at 10% 0, rgba(71, 227, 255, 0.16), transparent),
    linear-gradient(135deg, rgba(57, 197, 255, 0.15), rgba(5, 8, 20, 0.88));
  color: var(--accent-strong);
  font-size: 13px;
  display: inline-flex;
  gap: 6px;
  align-items: center;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast),
    border-color var(--transition-fast), background var(--transition-fast);
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 30px rgba(36, 148, 255, 0.4);
  border-color: rgba(71, 227, 255, 0.9);
}

.nav-cta span.icon {
  width: 18px;
  height: 18px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 0, #47e3ff 0, #39c5ff 45%, #060816 100%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: #050610;
}

.nav-cta span.label-main {
  font-weight: 500;
}

.nav-cta span.label-sub {
  font-size: 11px;
  color: var(--text-secondary);
}

/* 首页 Hero 区域 */
.hero {
  margin-top: 28px;
  display: grid;
  grid-template-columns: minmax(0, 3.1fr) minmax(0, 2.4fr);
  gap: 28px;
  align-items: stretch;
}

.hero-left {
  padding: 28px 26px 26px;
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at 0 0, rgba(71, 227, 255, 0.14) 0, transparent 55%),
    linear-gradient(145deg, rgba(10, 15, 32, 0.98), rgba(5, 8, 23, 0.98));
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: var(--shadow-soft);
  position: relative;
  overflow: hidden;
}

.hero-tagline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px 4px 4px;
  border-radius: 999px;
  border: 1px solid rgba(57, 197, 255, 0.65);
  background: radial-gradient(circle at 0 0, rgba(57, 197, 255, 0.16), transparent 60%);
  font-size: 12px;
  color: var(--accent-strong);
  margin-bottom: 12px;
}

.hero-tagline-pill {
  padding: 2px 9px;
  border-radius: 999px;
  background: rgba(5, 8, 20, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 11px;
  color: var(--text-secondary);
}

.hero-title {
  font-size: 34px;
  line-height: 1.18;
  letter-spacing: 0.04em;
  margin: 4px 0 10px;
}

.hero-title span.accent {
  background: linear-gradient(135deg, #47e3ff, #39c5ff);
  -webkit-background-clip: text;
  color: transparent;
}

.hero-subtitle {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 32rem;
}

.hero-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 18px 0 20px;
}

.hero-metric {
  min-width: 120px;
  padding: 10px 14px;
  border-radius: 14px;
  background: radial-gradient(circle at 0 0, rgba(10, 189, 110, 0.22), transparent 65%);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.hero-metric:nth-child(2) {
  background: radial-gradient(circle at 0 0, rgba(57, 197, 255, 0.22), transparent 65%);
}

.hero-metric:nth-child(3) {
  background: radial-gradient(circle at 0 0, rgba(250, 173, 20, 0.24), transparent 65%);
}

.hero-metric-value {
  font-size: 20px;
  font-weight: 600;
}

.hero-metric-label {
  font-size: 12px;
  color: var(--text-secondary);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 6px;
}

.btn-primary {
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  border: none;
  background: radial-gradient(circle at 0 0, #47e3ff 0, #39c5ff 52%, #0f172a 100%);
  color: #050610;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 14px 30px rgba(36, 148, 255, 0.6);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast),
    filter var(--transition-fast);
}

.btn-primary:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
  box-shadow: 0 16px 40px rgba(36, 148, 255, 0.8);
}

.btn-ghost {
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(5, 8, 20, 0.6);
  color: var(--text-secondary);
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast),
    border-color var(--transition-fast), transform var(--transition-fast);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--accent-strong);
  border-color: rgba(71, 227, 255, 0.6);
  transform: translateY(-1px);
}

.hero-footnote {
  font-size: 11px;
  color: var(--text-muted);
}

.hero-right {
  padding: 20px 18px 18px;
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at 0 0, rgba(57, 197, 255, 0.22), transparent 55%),
    linear-gradient(155deg, #050815, #080b1c);
  border: 1px solid rgba(57, 197, 255, 0.4);
  box-shadow: var(--shadow-soft);
  position: relative;
  overflow: hidden;
}

.hero-grid-title {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.chip {
  padding: 7px 10px;
  border-radius: 12px;
  border: 1px solid var(--border-subtle);
  background: rgba(5, 8, 20, 0.82);
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-secondary);
}

.chip-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
}

.chip-dot.success {
  background: var(--success);
}

.chip-dot.warn {
  background: var(--warning);
}

.chip-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.hero-tiles {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 10px;
}

.hero-tile {
  padding: 10px 10px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(9, 13, 32, 0.98), rgba(5, 8, 20, 0.98));
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-tile-label {
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.hero-tile-value {
  font-size: 18px;
  font-weight: 600;
}

.hero-tile-desc {
  font-size: 11px;
  color: var(--text-secondary);
}

.hero-arch {
  margin-top: 12px;
  padding: 10px;
  border-radius: 13px;
  background: radial-gradient(circle at 0 0, rgba(71, 227, 255, 0.22), transparent 65%);
  border: 1px solid rgba(57, 197, 255, 0.5);
  font-size: 11px;
  color: var(--text-secondary);
}

.hero-arch-title {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-strong);
  margin-bottom: 4px;
}

.hero-arch-body {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
}

.hero-arch-pill {
  padding: 3px 8px;
  border-radius: 999px;
  background: rgba(5, 8, 20, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

/* 首页：功能/场景卡片总览 */
.section {
  margin-top: 30px;
}

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 12px;
}

.section-title {
  font-size: 18px;
}

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

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.card {
  border-radius: var(--radius-md);
  background: radial-gradient(circle at 0 0, rgba(255, 255, 255, 0.02), transparent 55%),
    linear-gradient(150deg, rgba(8, 12, 26, 0.96), rgba(6, 9, 20, 0.98));
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 14px 13px 12px;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast),
    border-color var(--transition-fast), background var(--transition-fast);
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 0 0, rgba(57, 197, 255, 0.12), transparent 55%);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.card:hover {
  transform: translateY(-2px) translateZ(0);
  box-shadow: 0 16px 38px rgba(0, 0, 0, 0.75);
  border-color: rgba(57, 197, 255, 0.7);
}

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

.card-inner {
  position: relative;
  z-index: 1;
}

.card-tag {
  font-size: 11px;
  padding: 3px 9px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-bottom: 6px;
}

.card-title {
  font-size: 14px;
  margin-bottom: 4px;
}

.card-desc {
  font-size: 12px;
  color: var(--text-secondary);
  min-height: 3em;
}

.card-meta {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 11px;
  color: var(--text-muted);
}

.card-link {
  margin-top: 10px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--accent-strong);
}

.card-link span.arrow {
  font-size: 13px;
  transform: translateY(0.5px);
}

/* 内页布局 */
.page-main {
  margin-top: 22px;
  padding: 22px 22px 18px;
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, rgba(11, 15, 32, 0.98), rgba(5, 8, 20, 0.98));
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: var(--shadow-soft);
}

.page-breadcrumb {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.page-title {
  font-size: 22px;
  margin: 0 0 4px;
}

.page-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.page-grid {
  display: grid;
  grid-template-columns: minmax(0, 2.4fr) minmax(0, 1.9fr);
  gap: 18px;
}

.page-section {
  padding: 12px 0;
  border-top: 1px dashed rgba(255, 255, 255, 0.08);
}

.page-section:first-of-type {
  border-top: none;
}

.page-section-title {
  font-size: 14px;
  margin-bottom: 6px;
}

.page-section-body {
  font-size: 13px;
  color: var(--text-secondary);
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.pill {
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(5, 8, 20, 0.9);
  font-size: 11px;
  color: var(--text-secondary);
}

.stat-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 10px;
  margin-top: 8px;
}

.stat-item {
  padding: 8px 9px;
  border-radius: 10px;
  background: rgba(5, 8, 20, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.stat-label {
  font-size: 11px;
  color: var(--text-muted);
}

.stat-value {
  font-size: 13px;
  margin-top: 2px;
}

.feature-list {
  margin: 6px 0 0;
  padding-left: 16px;
  font-size: 13px;
  color: var(--text-secondary);
}

.feature-list li {
  margin-bottom: 3px;
}

.usecase {
  padding: 10px 11px;
  border-radius: 12px;
  background: radial-gradient(circle at 0 0, rgba(250, 173, 20, 0.16), transparent 65%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 12px;
  color: var(--text-secondary);
}

.usecase-title {
  font-weight: 500;
  margin-bottom: 4px;
}

/* 页脚 */
.footer {
  margin-top: 26px;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 11px;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: space-between;
  align-items: center;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.icp-link a {
  color: var(--text-secondary);
}

.icp-link a:hover {
  color: var(--accent-strong);
}

/* 响应式 */
@media (max-width: 960px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-right {
    order: -1;
  }

  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .nav {
    gap: 10px;
  }

  .nav-menu {
    display: none;
  }
}

@media (max-width: 720px) {
  .shell {
    padding: 16px 14px 28px;
  }

  .nav {
    padding-inline: 14px;
  }

  .hero-left {
    padding: 22px 18px 18px;
  }

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

  .card-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-main {
    padding: 18px 14px;
  }

  .page-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}