@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;700&family=Sora:wght@400;500;600;700&display=swap");

:root {
  --bg: #f2f5fb;
  --panel: #ffffff;
  --ink: #0f172a;
  --muted: #5b6b7f;
  --line: #dbe4f0;
  --brand: #0ea5a1;
  --brand-2: #2563eb;
  --accent: #f97316;
  --danger: #b91c1c;
  --shadow: 0 16px 40px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Sora", "Noto Sans SC", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 15%, rgba(14, 165, 161, 0.15), transparent 40%),
    radial-gradient(circle at 85% 10%, rgba(37, 99, 235, 0.12), transparent 40%),
    radial-gradient(circle at 80% 80%, rgba(249, 115, 22, 0.12), transparent 45%),
    var(--bg);
  min-height: 100vh;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.6) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.6) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.25;
  pointer-events: none;
}

.bg-orb {
  position: fixed;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  filter: blur(30px);
  opacity: 0.35;
  pointer-events: none;
}

.orb-a {
  top: -90px;
  left: -80px;
  background: #4fd1c5;
}

.orb-b {
  bottom: -120px;
  right: -100px;
  background: #60a5fa;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

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

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  letter-spacing: 0.5px;
}

.brand-title {
  font-size: 18px;
  font-weight: 700;
}

.brand-sub {
  font-size: 12px;
  color: var(--muted);
}

.nav {
  display: flex;
  align-items: center;
  gap: 16px;
  font-weight: 600;
}

.nav a {
  text-decoration: none;
  color: var(--ink);
}

.hero-wrap,
.admin-shell {
  width: min(1200px, calc(100% - 40px));
  margin: 28px auto 56px;
  display: grid;
  gap: 20px;
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 22px;
  align-items: center;
}

.hero-copy h1 {
  font-size: clamp(32px, 4vw, 54px);
  margin: 10px 0 12px;
  line-height: 1.05;
}

.lead {
  font-size: 16px;
  color: var(--muted);
  line-height: 1.8;
}

.eyebrow {
  margin: 0;
  color: var(--brand);
  font-weight: 700;
  letter-spacing: 0.2px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px;
  box-shadow: var(--shadow);
}

.hero-panel {
  display: grid;
  gap: 16px;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
}

.panel-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 12px;
  color: var(--muted);
}

.panel-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-top: 6px;
}

.dot-brand {
  background: var(--brand);
}

.dot-accent {
  background: var(--accent);
}

.dot-ink {
  background: #0f172a;
}

.dot-muted {
  background: #94a3b8;
}

.panel-footer {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.panel-label {
  margin: 0;
  font-size: 12px;
  color: var(--muted);
}

.panel-value {
  margin: 4px 0 0;
  font-weight: 600;
}

.section-header h2 {
  margin: 0 0 6px;
}

.section-header p {
  margin: 0;
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.feature h3 {
  margin: 0 0 8px;
}

.feature p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.architecture {
  display: grid;
  gap: 16px;
}

.arch-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.arch-card {
  border: 1px dashed var(--line);
  border-radius: 14px;
  padding: 16px;
  background: #f8fbff;
}

.arch-tag {
  font-size: 12px;
  color: var(--muted);
  margin: 0 0 6px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 20px;
}

.stat-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px 14px;
  background: #ffffffcc;
}

.stat-label {
  font-size: 12px;
  color: var(--muted);
  margin: 0 0 6px;
}

.roadmap {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.roadmap-item {
  border-left: 3px solid var(--brand);
  padding: 12px 14px;
  background: #fff;
  border-radius: 12px;
}

.roadmap-item h4 {
  margin: 0 0 6px;
}

.footer {
  width: min(1200px, calc(100% - 40px));
  margin: 0 auto 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  font-size: 13px;
}

.btn {
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 10px 16px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  background: transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #fff;
}

.btn-outline {
  border-color: var(--line);
  background: #fff;
}

.btn-ghost {
  border-color: #c7d4ea;
  color: var(--ink);
}

.btn-danger {
  background: linear-gradient(135deg, var(--danger), #7f1d1d);
  color: #fff;
}

.badge {
  background: rgba(14, 165, 161, 0.12);
  color: var(--brand);
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

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

.intro {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  gap: 24px;
}

.tag-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.tag {
  border: 1px solid var(--line);
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  background: #fff;
}

.form-grid {
  display: grid;
  gap: 12px;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.panel label {
  display: block;
  font-weight: 600;
  color: var(--ink);
}

.panel input,
.panel select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  margin-top: 6px;
  background: #fff;
}

.output pre,
pre#output {
  margin: 0;
  background: #0b1220;
  color: #d5e3ff;
  border-radius: 12px;
  padding: 16px;
  min-height: 220px;
  overflow: auto;
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
  }
  .grid,
  .arch-grid,
  .stat-grid,
  .roadmap,
  .admin-shell {
    grid-template-columns: 1fr;
  }
  .intro {
    flex-direction: column;
  }
  .footer {
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }
}