:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --text: #101318;
  --muted: #5f6773;
  --line: #d9dde5;
  --accent: #1f7a8c;
  --accent-strong: #195f6d;
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Outfit", "Noto Sans SC", sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #f8f9fb 0%, #eef2f7 100%);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  width: min(1080px, calc(100% - 2.4rem));
  margin: 0 auto;
}

.ambient {
  position: fixed;
  z-index: -1;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.35;
}

.ambient-a {
  width: 420px;
  height: 420px;
  background: #a3d5df;
  top: -120px;
  right: -80px;
}

.ambient-b {
  width: 340px;
  height: 340px;
  background: #d8e8b0;
  left: -100px;
  top: 45%;
}

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(8px);
  background: rgba(248, 249, 251, 0.85);
  border-bottom: 1px solid rgba(16, 19, 24, 0.06);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 0;
}

.brand {
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  display: inline-flex;
  gap: 0.5rem;
  align-items: center;
}

.brand-dot {
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 6px rgba(31, 122, 140, 0.15);
}

.nav {
  display: flex;
  gap: 1.2rem;
}

.nav a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 500;
}

.hero {
  padding: 4.8rem 0 3.2rem;
}

.tag {
  display: inline-block;
  padding: 0.25rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.82rem;
  margin-bottom: 1rem;
}

h1,
h2,
h3 {
  line-height: 1.2;
  margin: 0;
}

h1 {
  font-size: clamp(2rem, 4.5vw, 3.3rem);
  letter-spacing: -0.02em;
  max-width: 13ch;
}

.lead {
  max-width: 58ch;
  margin: 1.15rem 0 0;
  color: var(--muted);
}

.hero-actions {
  margin-top: 1.8rem;
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.btn {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.68rem 1.1rem;
  font-weight: 600;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

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

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 6px 20px rgba(31, 122, 140, 0.25);
}

.btn-primary:hover {
  background: var(--accent-strong);
}

.btn-ghost {
  color: var(--text);
  border: 1px solid var(--line);
  background: #fff;
}

.hero-stats {
  list-style: none;
  padding: 0;
  margin: 2.2rem 0 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(120px, 1fr));
  gap: 0.8rem;
}

.hero-stats li {
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.9rem;
  color: var(--muted);
}

.hero-stats span {
  display: block;
  font-size: 1.05rem;
  color: var(--text);
  font-weight: 700;
}

.section {
  padding: 2.2rem 0;
}

.section h2 {
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  margin-bottom: 1rem;
}

.grid {
  display: grid;
  gap: 0.9rem;
}

.cards-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
}

.card p,
.deploy-note {
  color: var(--muted);
  margin: 0.65rem 0 0;
}

.timeline {
  display: grid;
  gap: 0.8rem;
}

.timeline-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.95rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.95rem;
}

.timeline-item span {
  min-width: 2.2rem;
  height: 2.2rem;
  border-radius: 50%;
  background: #e8f3f5;
  color: var(--accent-strong);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
}

.quick-access {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.35rem;
}

.quick-access .btn {
  margin-top: 1rem;
}

.site-footer {
  padding: 2.6rem 0 2rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

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

@media (max-width: 880px) {
  .cards-3 {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 620px) {
  .nav {
    gap: 0.8rem;
  }

  .nav a {
    font-size: 0.92rem;
  }

  .hero {
    padding-top: 3.8rem;
  }
}