:root {
  --bg: #040915;
  --panel: rgba(12, 21, 40, 0.9);
  --panel-light: rgba(33, 126, 255, 0.25);
  --accent: #3da9ff;
  --accent-strong: #5cf2c4;
  --text-primary: #f3f6ff;
  --text-muted: #9fb3d1;
  --border: rgba(255, 255, 255, 0.1);
}

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

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft Yahei", sans-serif;
  background: radial-gradient(circle at 10% 0%, #15243f, var(--bg) 65%);
  color: var(--text-primary);
  line-height: 1.6;
  padding-bottom: 80px;
}

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

.hero {
  padding: 32px clamp(18px, 5vw, 60px) 40px;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 60% 0%, rgba(61, 168, 255, 0.3), transparent 55%);
  pointer-events: none;
}

.hero__nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  position: relative;
  z-index: 2;
}

.logo {
  font-weight: 700;
  letter-spacing: 0.08em;
}

.hero__nav nav {
  display: flex;
  gap: 18px;
  font-size: 0.95rem;
}

.hero__nav nav a {
  color: var(--text-muted);
}

.ghost-btn,
.primary-btn,
.secondary-btn {
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 600;
}

.primary-btn {
  border-color: transparent;
  background: linear-gradient(120deg, var(--accent), var(--accent-strong));
}

.hero__content {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 30px;
  position: relative;
  z-index: 2;
}

.tag {
  color: var(--accent-strong);
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin: 12px 0;
}

.lead {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 520px;
}

.hero__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 20px 0 14px;
}

.hero__stats {
  list-style: none;
  display: flex;
  gap: 20px;
  padding: 0;
  margin: 0;
}

.hero__stats strong {
  display: block;
  font-size: 1.3rem;
}

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

.panel-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px 20px;
  font-size: 0.95rem;
}

.panel-card.accent {
  background: linear-gradient(140deg, var(--panel), rgba(48, 148, 255, 0.25));
}

.trend {
  display: flex;
  justify-content: space-between;
  margin-top: 12px;
}

.trend-value.up {
  color: var(--accent-strong);
}

.section {
  padding: 44px clamp(18px, 5vw, 60px);
}

.section__header {
  max-width: 560px;
  margin-bottom: 28px;
}

.section__header h2 {
  margin: 8px 0 12px;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.8rem;
  color: var(--accent);
}

.overview__grid,
.features__grid,
.scenarios__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.overview__grid article,
.feature-card,
.scenarios__grid article {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  font-size: 0.95rem;
  min-height: 160px;
}

.scenarios {
  background: rgba(255, 255, 255, 0.02);
}

.cta__card {
  background: rgba(4, 9, 21, 0.7);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: clamp(22px, 5vw, 40px);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.cta__form {
  display: grid;
  gap: 12px;
}

.cta__form input,
.cta__form textarea {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 14px;
  color: var(--text-primary);
}

.cta__form button {
  border: none;
  border-radius: 14px;
  padding: 12px;
  font-weight: 600;
  background: linear-gradient(120deg, var(--accent), var(--accent-strong));
  color: #01111d;
  cursor: pointer;
}

.footer {
  background: #030714;
  padding: 48px clamp(18px, 5vw, 60px) 120px;
}

.footer__content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 18px;
}

.footer a {
  display: block;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.icp-bar {
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100%;
  background: rgba(2, 6, 15, 0.95);
  border-top: 1px solid var(--border);
  padding: 8px 16px;
  display: flex;
  justify-content: center;
  z-index: 10;
}

.icp-bar a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.icp-icon svg {
  width: 20px;
  height: 20px;
}

@media (max-width: 700px) {
  .hero__nav nav {
    display: none;
  }
  .hero__stats {
    flex-direction: column;
    gap: 10px;
  }
}