:root {
  color-scheme: light;
  --bg: #f5f8fc;
  --bg-soft: rgba(255, 255, 255, 0.82);
  --panel: rgba(255, 255, 255, 0.92);
  --panel-border: rgba(26, 50, 88, 0.1);
  --text: #102033;
  --muted: rgba(16, 32, 51, 0.72);
  --primary: #0b6bcb;
  --primary-strong: #0f84e8;
  --accent: #10a36d;
  --shadow: 0 24px 70px rgba(20, 40, 70, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(11, 107, 203, 0.12), transparent 36%),
    radial-gradient(circle at 85% 18%, rgba(16, 163, 109, 0.1), transparent 30%),
    linear-gradient(180deg, #f8fbff 0%, #eef4fb 100%);
  overflow-x: hidden;
}

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

.shell {
  position: relative;
  z-index: 1;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0 32px;
}

.hero {
  display: grid;
  gap: 28px;
  padding: 28px;
  border: 1px solid var(--panel-border);
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 251, 255, 0.92));
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
  animation: fade-up 800ms ease-out both;
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-logo {
  flex: none;
  width: 64px;
  height: 64px;
  padding: 10px;
  border-radius: 18px;
  background: rgba(16, 32, 51, 0.04);
  border: 1px solid var(--panel-border);
  object-fit: contain;
}

.brand-copy {
  display: grid;
  gap: 8px;
}

.brand-pill {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(11, 107, 203, 0.1);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand-subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.hero-copy {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(38px, 6vw, 72px);
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.lead {
  max-width: 760px;
  margin: 18px 0 0;
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.8;
  color: var(--muted);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 18px;
  border-radius: 16px;
  border: 1px solid transparent;
  font-weight: 700;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  color: #08111f;
  box-shadow: 0 16px 30px rgba(89, 191, 255, 0.25);
}

.btn-secondary {
  background: rgba(16, 32, 51, 0.04);
  border-color: var(--panel-border);
}

.feature-grid {
  display: grid;
  gap: 18px;
  margin-top: 18px;
}

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

.feature-card {
  border: 1px solid var(--panel-border);
  border-radius: 24px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.feature-card {
  padding: 22px;
  transition:
    transform 180ms ease,
    border-color 180ms ease;
}

a.feature-link {
  display: block;
  color: inherit;
  text-decoration: none;
  height: 100%;
}

.feature-card:hover {
  transform: translateY(-3px);
  border-color: rgba(138, 212, 255, 0.22);
}

.feature-link:focus-visible {
  outline: 3px solid rgba(15, 132, 232, 0.25);
  outline-offset: 3px;
}

.feature-monitor {
  background:
    linear-gradient(180deg, rgba(11, 107, 203, 0.12), transparent 32%),
    var(--panel);
}

.feature-market {
  background:
    linear-gradient(180deg, rgba(16, 163, 109, 0.1), transparent 32%),
    var(--panel);
}

.feature-card h2 {
  margin: 0 0 12px;
  font-size: 24px;
  line-height: 1.2;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.feature-card a {
  display: inline-flex;
  margin-top: 18px;
  color: var(--primary);
  font-weight: 700;
}

.feature-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 18px;
  color: var(--primary);
  font-weight: 700;
}

.feature-cta-icon {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
  flex: none;
  transform: translateX(0);
  transition: transform 180ms ease;
}

.feature-link:hover .feature-cta-icon {
  transform: translateX(2px);
}

.contact-link {
  color: var(--primary);
  font-weight: 700;
  word-break: break-word;
}

.footer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 12px 18px;
  padding: 20px 4px 0;
  color: var(--muted);
  font-size: 13px;
}

.footer .beian {
  justify-self: center;
  text-align: center;
}

.footer .beian a {
  color: var(--muted);
  font-weight: 600;
}

.footer .footer-left {
  justify-self: start;
}

.footer .footer-right {
  justify-self: end;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  text-align: right;
}

.bg-orb {
  position: fixed;
  z-index: 0;
  border-radius: 999px;
  filter: blur(14px);
  pointer-events: none;
}

.orb-a {
  top: -60px;
  left: -80px;
  width: 280px;
  height: 280px;
  background: rgba(11, 107, 203, 0.12);
}

.orb-b {
  right: -80px;
  top: 180px;
  width: 320px;
  height: 320px;
  background: rgba(16, 163, 109, 0.1);
}

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  opacity: 0.08;
  background-image:
    linear-gradient(rgba(16, 32, 51, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 32, 51, 0.08) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 92%);
  pointer-events: none;
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(18px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .shell {
    width: min(100% - 20px, 1120px);
    padding-top: 16px;
  }

  .hero {
    padding: 20px;
    border-radius: 22px;
  }

  .brand-row {
    align-items: flex-start;
  }

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

  .btn {
    width: 100%;
  }

  .footer {
    grid-template-columns: 1fr;
    justify-items: start;
  }

  .footer .beian,
  .footer .footer-right {
    justify-self: start;
  }

  .footer .footer-right {
    align-items: flex-start;
    text-align: left;
  }

  h1 {
    font-size: clamp(32px, 10vw, 44px);
  }

  .brand-logo {
    width: 56px;
    height: 56px;
    padding: 8px;
    border-radius: 16px;
  }

  .lead {
    font-size: 15px;
    line-height: 1.75;
  }

  .feature-card h2 {
    font-size: 20px;
  }
}