/* Base styles & tokens */
:root {
  color-scheme: dark;
  --bg: #050712;
  --surface: #0b0f23;
  --surface-elevated: #131937;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #f4f7fb;
  --muted: #8d95b8;
  --accent: #ff8a3c;
  --accent-2: #2dd5c4;
  --danger: #ff5f5f;
  --success: #39ffb0;
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 10px;
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: radial-gradient(circle at top, #141a3d 0%, #050712 70%);
  color: var(--text);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
}

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

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.container {
  width: min(1200px, 100%);
  margin: 0 auto;
  padding: 0 24px;
}

main {
  padding: 32px 0 80px;
}

.muted {
  color: var(--muted);
}

.grid {
  display: grid;
  gap: 20px;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.06);
  font-size: 12px;
  letter-spacing: 0.02em;
}

.section-title {
  font-size: 22px;
  margin: 48px 0 16px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.3);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.btn-primary {
  background: linear-gradient(90deg, var(--accent), #ffc93c);
  color: #050712;
}

.btn-secondary {
  border-color: var(--border);
  background: transparent;
  color: var(--text);
}

.btn-ghost {
  border-color: transparent;
  background: rgba(255, 255, 255, 0.06);
  color: var(--accent);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.notice {
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  padding: 16px;
}

input, select, textarea {
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  padding: 10px 14px;
}

textarea {
  resize: vertical;
  min-height: 120px;
}

@media (max-width: 768px) {
  main {
    padding: 24px 0 64px;
  }
  .container {
    padding: 0 16px;
  }
}