:root {
  --bg: #f4f8fc;
  --bg-strong: #081826;
  --surface: rgba(255, 255, 255, 0.78);
  --surface-strong: #ffffff;
  --line: rgba(24, 77, 128, 0.12);
  --text: #0d2238;
  --muted: #5d6f83;
  --primary: #1e8fff;
  --primary-soft: #7fd4ff;
  --accent: #0c6dd6;
  --shadow: 0 24px 80px rgba(7, 27, 50, 0.12);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --container: min(1160px, calc(100% - 40px));
  --header-height: 86px;
  --font-body: "Segoe UI", "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif;
  --font-display: "Bahnschrift", "Segoe UI Semibold", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(81, 185, 255, 0.12), transparent 32%),
    linear-gradient(180deg, #fafdff 0%, #f1f6fb 100%);
  line-height: 1.65;
}

body.nav-open {
  overflow: hidden;
}

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

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

button {
  font: inherit;
}

.page-shell {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(30, 143, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 143, 255, 0.035) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.45), transparent 85%);
  z-index: -1;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: rgba(248, 252, 255, 0.72);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.site-header.is-scrolled {
  border-color: var(--line);
  box-shadow: 0 16px 32px rgba(10, 31, 58, 0.08);
  background: rgba(248, 252, 255, 0.88);
}

.header-inner {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand img {
  width: 56px;
  height: 56px;
  object-fit: cover;
  border-radius: 16px;
  box-shadow: 0 10px 28px rgba(16, 96, 178, 0.2);
}

.brand-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand-text strong {
  font-size: 1rem;
  letter-spacing: 0.02em;
}

.brand-text span {
  color: var(--muted);
  font-size: 0.8rem;
}

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

.site-nav a {
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--muted);
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
  background: rgba(30, 143, 255, 0.08);
  transform: translateY(-1px);
}

.site-nav .is-disabled {
  color: #94a5b6;
  position: relative;
}

.site-nav .is-disabled::after {
  content: "未实装";
  position: absolute;
  top: -6px;
  right: -2px;
  padding: 2px 6px;
  border-radius: 999px;
  font-size: 0.68rem;
  color: var(--accent);
  background: rgba(30, 143, 255, 0.12);
}

.menu-toggle {
  display: none;
  width: 48px;
  height: 48px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.85);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
}

.menu-toggle span {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: var(--text);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.hero {
  padding: 56px 0 34px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 40px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero h1,
.section-heading h2,
.platform-copy h2,
.contact-card h2 {
  margin: 0;
  font-family: var(--font-display);
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.hero h1 {
  font-size: clamp(2.7rem, 5vw, 4.8rem);
  max-width: 11ch;
}

.hero-text,
.section-heading p,
.platform-copy p,
.contact-card p,
.service-card p,
.timeline-item p,
.intro-grid p,
.capability-list li,
.footer-inner p {
  color: var(--muted);
}

.hero-text {
  max-width: 58ch;
  margin: 24px 0 0;
  font-size: 1.04rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 28px 0 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

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

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary) 0%, #0b67cf 100%);
  box-shadow: 0 16px 36px rgba(19, 108, 197, 0.26);
}

.button-secondary {
  color: var(--text);
  border-color: rgba(18, 88, 150, 0.16);
  background: rgba(255, 255, 255, 0.72);
}

.button-disabled {
  color: #92a0b1;
  border-color: rgba(146, 160, 177, 0.35);
  background: rgba(255, 255, 255, 0.5);
  cursor: not-allowed;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.hero-points li {
  padding: 10px 14px;
  border: 1px solid rgba(30, 143, 255, 0.14);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.68);
  color: #28445f;
  font-size: 0.92rem;
}

.glass-card,
.service-card,
.platform-card,
.timeline-item,
.contact-card,
.intro-strip,
.section-heading,
.platform-panel {
  position: relative;
}

.dashboard-card {
  padding: 28px;
  border: 1px solid rgba(64, 145, 220, 0.14);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(246, 251, 255, 0.82)),
    linear-gradient(135deg, rgba(124, 215, 255, 0.12), rgba(13, 96, 176, 0.04));
  box-shadow: var(--shadow);
  overflow: hidden;
}

.dashboard-card::before {
  content: "";
  position: absolute;
  inset: auto auto -40px -40px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(127, 212, 255, 0.24), transparent 68%);
}

.dashboard-top,
.metric-grid,
.chart-card,
.signal-card {
  position: relative;
  z-index: 1;
}

.dashboard-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.dashboard-top p,
.chart-copy span,
.signal-copy span,
.metric-grid span,
.platform-line span {
  margin: 0;
  color: #6b8298;
  font-size: 0.88rem;
}

.dashboard-top strong,
.chart-copy strong,
.signal-copy strong {
  display: block;
  margin-top: 4px;
  font-size: 1.2rem;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--accent);
  background: rgba(30, 143, 255, 0.08);
  font-size: 0.82rem;
  font-weight: 600;
}

.status-pill::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #34d399;
  box-shadow: 0 0 0 5px rgba(52, 211, 153, 0.12);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 22px;
}

.metric-grid article,
.chart-card,
.signal-card,
.platform-card,
.service-card,
.timeline-item,
.contact-card {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.7);
  border-radius: var(--radius-md);
}

.metric-grid article {
  padding: 18px;
}

.metric-grid strong {
  display: block;
  margin-top: 8px;
  font-size: 2rem;
  line-height: 1;
}

.metric-grid p {
  margin: 10px 0 0;
  color: #587088;
  font-size: 0.92rem;
}

.chart-card {
  margin-top: 16px;
  padding: 18px;
}

.chart-bars {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  height: 148px;
  margin-top: 18px;
}

.chart-bars i {
  flex: 1;
  border-radius: 999px 999px 14px 14px;
  background: linear-gradient(180deg, var(--primary-soft), var(--accent));
  height: var(--bar-size);
  box-shadow: inset 0 -10px 16px rgba(7, 42, 80, 0.14);
}

.signal-card {
  margin-top: 16px;
  padding: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  width: 116px;
}

.signal-grid span {
  aspect-ratio: 1;
  border-radius: 16px;
  background: linear-gradient(145deg, rgba(127, 212, 255, 0.9), rgba(16, 102, 189, 0.2));
}

.section {
  padding: 42px 0 92px;
}

.intro-strip {
  padding: 0;
}

.intro-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  padding: 30px 34px;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius-lg) + 4px);
  background: rgba(255, 255, 255, 0.68);
  box-shadow: 0 20px 45px rgba(18, 57, 96, 0.06);
}

.intro-grid p {
  margin: 0;
  font-size: 1.02rem;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 30px;
}

.section-heading h2,
.platform-copy h2,
.contact-card h2 {
  font-size: clamp(2rem, 4vw, 3.4rem);
}

.section-heading p {
  margin: 16px 0 0;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.service-card {
  padding: 24px;
  min-height: 250px;
  overflow: hidden;
}

.service-card::before {
  content: "";
  position: absolute;
  inset: -60px -40px auto auto;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(127, 212, 255, 0.22), transparent 70%);
}

.card-index,
.timeline-item span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 48px;
  height: 48px;
  padding: 0 14px;
  border-radius: 999px;
  color: var(--accent);
  background: rgba(30, 143, 255, 0.08);
  font-weight: 700;
}

.service-card h3,
.timeline-item h3 {
  margin: 18px 0 12px;
  font-size: 1.3rem;
  line-height: 1.24;
}

.service-card p,
.timeline-item p {
  margin: 0;
}

.platform-section {
  padding-top: 12px;
}

.platform-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.95fr);
  gap: 24px;
  align-items: center;
}

.capability-list {
  padding: 0;
  margin: 24px 0 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.capability-list li {
  position: relative;
  padding-left: 22px;
}

.capability-list li::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-soft), var(--accent));
  box-shadow: 0 0 0 6px rgba(30, 143, 255, 0.08);
}

.platform-card {
  min-height: 420px;
  padding: 26px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(239, 247, 255, 0.82)),
    radial-gradient(circle at top right, rgba(127, 212, 255, 0.18), transparent 34%);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.platform-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(24, 77, 128, 0.1);
}

.platform-line strong {
  font-size: 1rem;
  text-align: right;
}

.platform-orbit {
  position: absolute;
  inset: auto 20px 26px auto;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  border: 1px solid rgba(30, 143, 255, 0.16);
}

.platform-orbit::before,
.platform-orbit::after,
.platform-orbit b {
  content: "";
  position: absolute;
  border-radius: 50%;
}

.platform-orbit::before {
  inset: 28px;
  border: 1px solid rgba(30, 143, 255, 0.16);
}

.platform-orbit::after {
  inset: 72px;
  background: radial-gradient(circle, rgba(127, 212, 255, 0.8), rgba(12, 109, 214, 0.8));
  box-shadow: 0 0 0 18px rgba(30, 143, 255, 0.08);
}

.platform-orbit b:nth-child(1) {
  top: 18px;
  left: 48px;
  width: 14px;
  height: 14px;
  background: var(--primary);
}

.platform-orbit b:nth-child(2) {
  right: 22px;
  top: 98px;
  width: 12px;
  height: 12px;
  background: var(--primary-soft);
}

.platform-orbit b:nth-child(3) {
  left: 78px;
  bottom: 24px;
  width: 10px;
  height: 10px;
  background: #34d399;
}

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

.timeline-item {
  padding: 24px;
}

.contact-card {
  padding: 34px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background:
    linear-gradient(135deg, rgba(7, 24, 38, 0.95), rgba(14, 79, 138, 0.92)),
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), transparent);
  color: #fff;
  box-shadow: 0 26px 60px rgba(8, 30, 53, 0.25);
}

.contact-card .eyebrow,
.contact-card p {
  color: rgba(233, 242, 255, 0.78);
}

.site-footer {
  padding: 0 0 28px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.footer-inner strong {
  display: block;
  margin-bottom: 6px;
}

.footer-inner p {
  margin: 0;
}

.footer-inner a {
  color: var(--accent);
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1080px) {
  .hero-grid,
  .platform-grid,
  .service-grid,
  .timeline,
  .intro-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .service-grid article:last-child {
    grid-column: span 2;
  }
}

@media (max-width: 820px) {
  :root {
    --container: min(100% - 28px, 720px);
  }

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

  .site-nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 14px;
    right: 14px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 22px 48px rgba(10, 29, 53, 0.12);
    flex-direction: column;
    align-items: stretch;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 0.25s ease, transform 0.25s ease;
  }

  .site-nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-nav a {
    padding: 12px 14px;
    border-radius: 14px;
  }

  .hero {
    padding-top: 34px;
  }

  .hero-grid,
  .platform-grid,
  .service-grid,
  .timeline,
  .intro-grid,
  .metric-grid {
    grid-template-columns: 1fr;
  }

  .service-grid article:last-child {
    grid-column: auto;
  }

  .hero h1 {
    max-width: none;
  }

  .contact-card,
  .footer-inner,
  .signal-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .platform-card {
    min-height: 360px;
  }
}

@media (max-width: 560px) {
  .brand img {
    width: 48px;
    height: 48px;
  }

  .brand-text span {
    display: none;
  }

  .hero h1,
  .section-heading h2,
  .platform-copy h2,
  .contact-card h2 {
    letter-spacing: -0.04em;
  }

  .dashboard-card,
  .service-card,
  .platform-card,
  .timeline-item,
  .contact-card,
  .intro-grid {
    padding-left: 20px;
    padding-right: 20px;
  }

  .hero-points {
    gap: 10px;
  }

  .hero-points li {
    width: 100%;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}