:root {
  --bg: #070a10;
  --bg2: #0b1020;
  --card: rgba(255, 255, 255, 0.06);
  --card2: rgba(255, 255, 255, 0.08);
  --line: rgba(255, 255, 255, 0.12);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.68);
  --muted2: rgba(255, 255, 255, 0.52);
  --accent: #37d0ff;
  --accent2: #7c5cff;
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.55);
  --radius: 18px;
  --container: 1120px;
}

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

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: radial-gradient(1200px 700px at 12% -10%, rgba(124, 92, 255, 0.35), transparent 55%),
    radial-gradient(1000px 600px at 86% -20%, rgba(55, 208, 255, 0.28), transparent 52%),
    radial-gradient(900px 700px at 50% 120%, rgba(55, 208, 255, 0.12), transparent 55%), var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

.container {
  width: min(var(--container), calc(100% - 40px));
  margin: 0 auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: 12px;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.75);
  border: 1px solid var(--line);
  transform: translateY(-150%);
  transition: transform 180ms ease;
  z-index: 1000;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(7, 10, 16, 0.35);
  border-bottom: 1px solid transparent;
  transition: background 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.site-header.is-elevated {
  background: rgba(7, 10, 16, 0.82);
  border-bottom-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.brand-logo {
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
}

.brand-wordmark {
  display: grid;
  gap: 2px;
  line-height: 1.05;
}

.brand-title {
  font-weight: 750;
  letter-spacing: 0.2px;
  font-size: 18px;
  color: #062f63;
}

.brand-subtitle {
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.32em;
  color: rgba(6, 47, 99, 0.78);
}

.nav {
  display: flex;
  align-items: center;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.nav-toggle-lines {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  margin: 0 auto;
  position: relative;
  border-radius: 99px;
}

.nav-toggle-lines::before,
.nav-toggle-lines::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 99px;
}

.nav-toggle-lines::before {
  top: -6px;
}

.nav-toggle-lines::after {
  top: 6px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-link {
  font-size: 14px;
  color: var(--muted);
  transition: color 160ms ease;
}

.nav-link:hover {
  color: var(--text);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid rgba(55, 208, 255, 0.35);
  background: linear-gradient(90deg, rgba(55, 208, 255, 0.14), rgba(124, 92, 255, 0.12));
  color: var(--text);
  font-size: 14px;
}

.hero {
  position: relative;
  padding: 70px 0 44px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(1000px 520px at 50% 0%, rgba(255, 255, 255, 0.06), transparent 60%),
    linear-gradient(180deg, rgba(7, 10, 16, 0.2), rgba(7, 10, 16, 0.98));
}

.hero-inner {
  position: relative;
}

.hero-carousel {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: calc(var(--radius) + 6px);
  background: rgba(255, 255, 255, 0.03);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.carousel-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 100%;
  transition: transform 520ms ease;
}

.carousel-slide {
  padding: 58px 46px 40px;
  min-height: 380px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 14px;
  background: radial-gradient(900px 380px at 16% 18%, rgba(55, 208, 255, 0.16), transparent 58%),
    radial-gradient(820px 380px at 86% 26%, rgba(124, 92, 255, 0.16), transparent 54%);
}

.hero-kicker {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.2px;
  color: rgba(255, 255, 255, 0.78);
}

.hero-title {
  margin: 0;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.08;
  letter-spacing: -0.4px;
}

.hero-subtitle {
  margin: 0;
  font-size: 15px;
  color: var(--muted);
  max-width: 58ch;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 8px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 14px;
  color: var(--text);
  transition: transform 140ms ease, background 180ms ease, border-color 180ms ease;
  user-select: none;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: linear-gradient(90deg, rgba(55, 208, 255, 0.92), rgba(124, 92, 255, 0.92));
  border-color: rgba(255, 255, 255, 0.18);
}

.btn-primary:hover {
  background: linear-gradient(90deg, rgba(55, 208, 255, 1), rgba(124, 92, 255, 1));
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.12);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.16);
}

.carousel-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.18);
}

.carousel-btn {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font-size: 22px;
  line-height: 1;
}

.carousel-btn:hover {
  background: rgba(255, 255, 255, 0.06);
}

.carousel-dots {
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: center;
  flex: 1;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.1);
}

.dot[aria-selected="true"] {
  background: linear-gradient(90deg, rgba(55, 208, 255, 0.9), rgba(124, 92, 255, 0.85));
  border-color: rgba(255, 255, 255, 0.28);
  width: 22px;
}

.section {
  padding: 66px 0;
}

.section-alt {
  background: radial-gradient(1000px 500px at 40% 0%, rgba(255, 255, 255, 0.04), transparent 70%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0));
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.section-head {
  margin-bottom: 20px;
}

.section-head-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}

.section-title {
  margin: 0;
  font-size: 26px;
  letter-spacing: -0.2px;
}

.section-desc {
  margin: 10px 0 0;
  color: var(--muted);
  max-width: 72ch;
  font-size: 14px;
}

.link-more {
  color: rgba(55, 208, 255, 0.95);
  font-size: 14px;
}

.grid {
  display: grid;
  gap: 14px;
}

.cards {
  grid-template-columns: repeat(4, 1fr);
}

.card {
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.03);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 320px;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(55, 208, 255, 0.28);
  background: rgba(255, 255, 255, 0.04);
}

.card-media {
  height: 150px;
  background: linear-gradient(135deg, rgba(55, 208, 255, 0.18), rgba(124, 92, 255, 0.15));
}

.media-a2 {
  background: radial-gradient(320px 160px at 20% 40%, rgba(55, 208, 255, 0.25), transparent 60%),
    linear-gradient(135deg, rgba(124, 92, 255, 0.24), rgba(0, 0, 0, 0));
}

.media-x2 {
  background: radial-gradient(320px 160px at 80% 40%, rgba(124, 92, 255, 0.28), transparent 60%),
    linear-gradient(135deg, rgba(55, 208, 255, 0.18), rgba(0, 0, 0, 0));
}

.media-g2 {
  background: radial-gradient(320px 160px at 50% 30%, rgba(255, 255, 255, 0.12), transparent 55%),
    linear-gradient(135deg, rgba(55, 208, 255, 0.2), rgba(124, 92, 255, 0.2));
}

.media-data {
  background: radial-gradient(320px 160px at 40% 60%, rgba(55, 208, 255, 0.22), transparent 60%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.06), rgba(124, 92, 255, 0.18));
}

.card-body {
  padding: 16px 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.card-title {
  margin: 0;
  font-size: 16px;
}

.card-desc {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.card-link {
  margin-top: auto;
  color: rgba(55, 208, 255, 0.95);
  font-size: 13px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 18px;
}

.feature {
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.03);
  padding: 18px 18px 16px;
}

.feature-title {
  margin: 0;
  font-size: 16px;
}

.feature-desc {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.callout {
  margin-top: 18px;
  border-radius: calc(var(--radius) + 6px);
  border: 1px solid rgba(55, 208, 255, 0.18);
  background: linear-gradient(90deg, rgba(55, 208, 255, 0.1), rgba(124, 92, 255, 0.08));
  padding: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.callout-title {
  margin: 0;
  font-size: 16px;
}

.callout-desc {
  margin: 8px 0 0;
  color: rgba(255, 255, 255, 0.74);
  font-size: 13px;
}

.news-cards {
  grid-template-columns: repeat(3, 1fr);
}

.news-card {
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.03);
  padding: 18px;
}

.news-badge {
  display: inline-flex;
  align-items: center;
  height: 26px;
  padding: 0 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.04);
  color: rgba(255, 255, 255, 0.76);
  font-size: 12px;
}

.news-title {
  margin: 12px 0 0;
  font-size: 16px;
  line-height: 1.35;
}

.news-desc {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.news-link {
  display: inline-block;
  margin-top: 14px;
  color: rgba(55, 208, 255, 0.95);
  font-size: 13px;
}

.two-col {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 18px;
  align-items: start;
}

.stats {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.stat {
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.03);
  padding: 14px 12px;
}

.stat-number {
  font-size: 20px;
  font-weight: 650;
}

.stat-label {
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
}

.about-panel {
  border-radius: calc(var(--radius) + 6px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(0, 0, 0, 0.22);
  padding: 14px;
}

.about-panel-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.about-panel-row:last-child {
  border-bottom: none;
}

.about-key {
  color: var(--muted2);
  font-size: 13px;
}

.about-val {
  text-align: right;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.86);
}

.contact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  align-items: start;
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 18px 0 0;
  display: grid;
  gap: 10px;
}

.contact-key {
  display: inline-block;
  width: 46px;
  color: var(--muted2);
  font-size: 13px;
}

.contact-val {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.86);
}

.form {
  border-radius: calc(var(--radius) + 6px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.03);
  padding: 16px;
  display: grid;
  gap: 12px;
}

.field {
  display: grid;
  gap: 8px;
}

.field-label {
  font-size: 13px;
  color: var(--muted2);
}

.field-input,
.field-textarea {
  width: 100%;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(0, 0, 0, 0.22);
  color: var(--text);
  padding: 12px 12px;
  font-size: 14px;
  outline: none;
}

.field-input:focus,
.field-textarea:focus {
  border-color: rgba(55, 208, 255, 0.45);
  box-shadow: 0 0 0 3px rgba(55, 208, 255, 0.12);
}

.form-hint {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  min-height: 18px;
}

.site-footer {
  padding: 30px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(0, 0, 0, 0.2);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 18px;
  align-items: start;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.footer-logo {
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
}

.footer-brand-text {
  display: grid;
  gap: 6px;
}

.footer-name {
  font-weight: 750;
}

.footer-en {
  margin-top: 4px;
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.32em;
  color: rgba(255, 255, 255, 0.62);
}

.footer-slogan {
  margin-top: 0;
  color: var(--muted);
  font-size: 13px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  align-content: start;
}

.footer-links a {
  color: var(--muted);
  font-size: 13px;
}

.footer-links a:hover {
  color: var(--text);
}

.footer-meta {
  color: var(--muted2);
  font-size: 12px;
  display: grid;
  gap: 8px;
  justify-items: end;
}

.footer-icp {
  color: rgba(255, 255, 255, 0.42);
}

@media (max-width: 980px) {
  .cards {
    grid-template-columns: repeat(2, 1fr);
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .two-col {
    grid-template-columns: 1fr;
  }
  .contact {
    grid-template-columns: 1fr;
  }
  .footer-inner {
    grid-template-columns: 1fr;
  }
  .footer-meta {
    justify-items: start;
  }
}

@media (max-width: 740px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .nav-menu {
    position: absolute;
    top: 64px;
    right: 20px;
    left: 20px;
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding: 12px;
    border-radius: calc(var(--radius) + 6px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(7, 10, 16, 0.9);
    display: none;
  }
  .nav-menu.is-open {
    display: flex;
  }
  .nav-link {
    padding: 10px 12px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
  }
  .nav-cta {
    height: 40px;
  }

  .carousel-slide {
    padding: 46px 18px 32px;
    min-height: 420px;
  }

  .brand-subtitle {
    display: none;
  }
  .section {
    padding: 56px 0;
  }
  .section-head-row {
    align-items: flex-start;
    flex-direction: column;
  }
  .news-cards {
    grid-template-columns: 1fr;
  }
  .stats {
    grid-template-columns: 1fr;
  }
}