:root {
  --bg: #09131f;
  --bg-soft: #0f1f31;
  --surface: rgba(14, 29, 47, 0.82);
  --surface-strong: rgba(13, 27, 43, 0.94);
  --card: rgba(255, 255, 255, 0.06);
  --card-border: rgba(255, 255, 255, 0.12);
  --text: #eff7ff;
  --text-soft: #a8bfd3;
  --primary: #52b6ff;
  --primary-strong: #2383ff;
  --accent: #2ce2b6;
  --shadow: 0 30px 80px rgba(3, 10, 18, 0.45);
  --radius: 28px;
  --radius-sm: 18px;
  --container: min(1120px, calc(100% - 40px));
  --font-heading: "Alibaba Sans", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
  --font-body: "Alibaba PuHuiTi", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: var(--font-body);
  background:
    radial-gradient(circle at top left, rgba(44, 226, 182, 0.16), transparent 34%),
    radial-gradient(circle at 90% 8%, rgba(82, 182, 255, 0.18), transparent 28%),
    linear-gradient(180deg, #07111b 0%, #09131f 42%, #0b1624 100%);
}

body::before {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.65), transparent 90%);
  content: "";
  pointer-events: none;
}

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

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

.site-shell {
  position: relative;
  overflow: hidden;
}

.container {
  width: var(--container);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(7, 16, 27, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 16px;
  color: #06111c;
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: 0.08em;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  box-shadow: 0 10px 30px rgba(35, 131, 255, 0.28);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-text strong {
  font-size: 1rem;
  font-weight: 700;
}

.brand-text small {
  margin-top: 4px;
  color: var(--text-soft);
  font-size: 0.82rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--text-soft);
  font-size: 0.95rem;
}

.site-nav a {
  position: relative;
}

.site-nav a::after {
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
  content: "";
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
}

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 6px;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 0;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.08);
  cursor: pointer;
}

.menu-toggle span {
  width: 20px;
  height: 2px;
  border-radius: 999px;
  background: white;
}

.hero-section {
  position: relative;
  padding: 92px 0 80px;
}

.hero-section::after {
  position: absolute;
  right: -120px;
  top: 30px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(44, 226, 182, 0.22), transparent 65%);
  filter: blur(8px);
  content: "";
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: 34px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero-copy h1,
.section-heading h2,
.service-card h3,
.advantage-card h3,
.timeline-item h3,
.contact-copy h2 {
  margin: 0;
  font-family: var(--font-heading);
}

.hero-copy h1 {
  max-width: 11em;
  font-size: clamp(2.6rem, 5vw, 4.6rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.hero-text,
.section-heading,
.content-card p,
.service-card p,
.advantage-card p,
.timeline-item p,
.contact-copy p,
.site-footer p {
  color: var(--text-soft);
  line-height: 1.8;
}

.hero-text {
  max-width: 40rem;
  margin: 24px 0 0;
  font-size: 1.03rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 999px;
  font-weight: 700;
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease,
    background 0.25s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  color: #06111c;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  box-shadow: 0 16px 40px rgba(44, 226, 182, 0.2);
}

.button-secondary {
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.04);
}

.button-wide {
  width: 100%;
}

.hero-panel {
  position: relative;
  padding: 26px;
  border: 1px solid var(--card-border);
  border-radius: calc(var(--radius) + 8px);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02)),
    rgba(255, 255, 255, 0.02);
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 28px;
  border-radius: 22px;
  background: linear-gradient(150deg, rgba(82, 182, 255, 0.16), rgba(44, 226, 182, 0.08));
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.hero-card p,
.contact-card span,
.service-tag,
.timeline-item span {
  margin: 0;
  color: var(--accent);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-card strong {
  display: block;
  margin-top: 12px;
  font-size: 1.7rem;
  line-height: 1.25;
}

.hero-card span {
  display: block;
  margin-top: 12px;
  color: var(--text-soft);
  line-height: 1.75;
}

.hero-card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.mini-card {
  padding: 20px;
  border-radius: 20px;
  background: var(--card);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.mini-card:last-child {
  grid-column: 1 / -1;
}

.mini-card span {
  color: rgba(255, 255, 255, 0.45);
  font-size: 0.92rem;
  font-weight: 700;
}

.mini-card h2 {
  margin: 10px 0 10px;
  font-size: 1.18rem;
}

.mini-card p {
  margin: 0;
  color: var(--text-soft);
  line-height: 1.7;
}

.section {
  padding: 32px 0 88px;
}

.section-soft {
  position: relative;
}

.section-soft::before {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0));
  pointer-events: none;
  content: "";
}

.section-heading {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 52rem;
  margin-bottom: 30px;
}

.section-heading h2,
.contact-copy h2 {
  font-size: clamp(1.8rem, 3vw, 3.1rem);
  line-height: 1.15;
  letter-spacing: -0.04em;
}

.about-grid,
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(280px, 0.92fr);
  gap: 24px;
}

.content-card,
.stats-card,
.service-card,
.advantage-card,
.timeline-item,
.contact-card {
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.content-card,
.stats-card,
.contact-card {
  padding: 30px;
}

.content-card p {
  margin: 0;
}

.content-card p + p {
  margin-top: 16px;
}

.stats-card {
  display: grid;
  gap: 18px;
  background:
    radial-gradient(circle at top right, rgba(82, 182, 255, 0.12), transparent 36%),
    var(--surface-strong);
}

.stats-card div {
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.stats-card div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.stats-card strong,
.contact-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.1rem;
  line-height: 1.5;
}

.stats-card span {
  color: var(--text-soft);
  line-height: 1.8;
}

.service-grid,
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.service-card,
.advantage-card,
.timeline-item {
  padding: 28px;
}

.service-card h3,
.advantage-card h3,
.timeline-item h3 {
  margin-top: 14px;
  font-size: 1.35rem;
  line-height: 1.35;
}

.service-card ul {
  margin: 18px 0 0;
  padding-left: 18px;
  color: var(--text-soft);
  line-height: 1.9;
}

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

.timeline {
  display: grid;
  gap: 18px;
}

.timeline-item {
  position: relative;
  overflow: hidden;
}

.timeline-item::after {
  position: absolute;
  inset: auto -20px -60px auto;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(82, 182, 255, 0.14), transparent 65%);
  content: "";
}

.contact-section {
  padding-bottom: 104px;
}

.contact-card {
  display: grid;
  gap: 20px;
  align-content: start;
  background:
    radial-gradient(circle at top left, rgba(44, 226, 182, 0.12), transparent 28%),
    var(--surface-strong);
}

.contact-card div {
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.contact-card div:last-of-type {
  border-bottom: 0;
  padding-bottom: 0;
}

.contact-link {
  color: var(--text);
  transition: color 0.25s ease;
}

.contact-link:hover,
.contact-link:focus-visible {
  color: var(--accent);
}

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(6, 13, 22, 0.88);
}

.footer-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 0 30px;
}

.site-footer strong {
  display: block;
  margin-bottom: 10px;
}

.site-footer p {
  max-width: 34rem;
  margin: 0;
}

.footer-meta {
  display: flex;
  flex-direction: column;
  gap: 8px;
  color: var(--text-soft);
  text-align: right;
}

.filing-link {
  color: var(--text-soft);
  transition: color 0.25s ease;
}

.filing-link:hover,
.filing-link:focus-visible {
  color: var(--accent);
}

@media (max-width: 960px) {
  .site-nav {
    position: absolute;
    top: calc(100% + 12px);
    right: 20px;
    display: none;
    min-width: 220px;
    padding: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    background: rgba(7, 16, 27, 0.95);
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: grid;
    gap: 12px;
  }

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

  .hero-grid,
  .about-grid,
  .contact-grid,
  .service-grid,
  .advantage-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy h1 {
    max-width: none;
  }

  .footer-wrap,
  .footer-meta {
    align-items: flex-start;
    text-align: left;
  }

  .footer-wrap {
    flex-direction: column;
  }
}

@media (max-width: 720px) {
  .hero-section {
    padding-top: 68px;
  }

  .nav-wrap {
    gap: 12px;
  }

  .brand-text small {
    display: none;
  }

  .hero-panel,
  .content-card,
  .stats-card,
  .service-card,
  .advantage-card,
  .timeline-item,
  .contact-card {
    padding: 22px;
    border-radius: 22px;
  }

  .hero-card {
    padding: 22px;
  }

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

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .section {
    padding-bottom: 72px;
  }
}