:root {
  --primary-600: #6C5CE7;
  --primary-500: #7C69FF;
  --primary-100: #EAE7FF;
  --accent-pink: #FF8FB1;
  --accent-sky: #65C3FF;
  --success: #34C759;
  --warning: #F6A609;
  --error: #FF5A5F;
  --neutral-900: #1F2430;
  --neutral-700: #4B5563;
  --neutral-500: #9AA3B2;
  --neutral-200: #E5E7EB;
  --neutral-100: #F5F7FB;
  --hero-gradient: linear-gradient(135deg, #EAE7FF 0%, #FDF6FF 40%, #EAF6FF 100%);
}
* { box-sizing: border-box; }
:root {
  --container-width: 1200px;
  --gutter: 24px;
  --radius-card: 12px;
  --radius-input: 10px;
  --radius-button: 8px;
  --radius-pill: 24px;
  --shadow-s: 0 4px 16px rgba(31,36,48,0.08);
  --shadow-m: 0 10px 30px rgba(31,36,48,0.12);
}

body {
  margin: 0;
  font-family: "PingFang SC", "Noto Sans SC", Inter, system-ui, -apple-system, sans-serif;
  color: var(--neutral-900);
  background: var(--neutral-100);
}

a { color: var(--primary-600); text-decoration: none; }

.page { min-height: 100vh; }
.container {
  width: min(var(--container-width), 100% - 48px);
  margin: 0 auto;
}

.nav {
  background: #fff;
  border-bottom: 1px solid var(--neutral-200);
  position: sticky;
  top: 0;
  z-index: 10;
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  gap: 16px;
}
.nav__left, .nav__center, .nav__right { display: flex; align-items: center; gap: 16px; }
.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--neutral-900);
}
.nav__logo-badge {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary-500), var(--accent-sky));
}
.nav__item { color: var(--neutral-700); font-weight: 500; }
.nav__item.active { color: var(--primary-600); }

.hero {
  background: var(--hero-gradient);
  border-radius: 16px;
  padding: 32px;
  box-shadow: var(--shadow-s);
}

.section { margin: 28px 0; }
.section-title { font-size: 20px; font-weight: 600; margin-bottom: 12px; }

.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0,1fr)); }

.card {
  background: #fff;
  border-radius: var(--radius-card);
  padding: 16px;
  box-shadow: var(--shadow-s);
}
.card--flat { box-shadow: none; border: 1px solid var(--neutral-200); }
.card-cover {
  width: 100%;
  aspect-ratio: 21 / 9;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary-100), #fff 60%, var(--accent-sky));
  margin-bottom: 12px;
}
.card-title { font-weight: 600; margin: 6px 0; }
.card-meta { color: var(--neutral-500); font-size: 12px; }

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background: var(--primary-100);
  color: var(--primary-600);
  font-size: 12px;
}

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--neutral-200);
  background: #fff;
  font-size: 12px;
}
.chip.selected { background: var(--primary-100); border-color: var(--primary-500); color: var(--primary-600); }

.btn {
  height: 40px;
  padding: 0 16px;
  border-radius: var(--radius-button);
  border: 1px solid transparent;
  cursor: pointer;
  font-weight: 600;
}
.btn--primary { background: var(--primary-600); color: #fff; }
.btn--secondary { background: #fff; border-color: var(--primary-600); color: var(--primary-600); }
.btn--ghost { background: transparent; color: var(--neutral-700); }
.btn--danger { background: #fff; border-color: var(--error); color: var(--error); }

.input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--radius-input);
  border: 1px solid var(--neutral-200);
  background: #fff;
  font-size: 14px;
}

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

.stepper { display: flex; gap: 10px; align-items: center; }
.step {
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  background: var(--neutral-100);
  color: var(--neutral-700);
  font-size: 12px;
}
.step.active { background: var(--primary-100); color: var(--primary-600); }

.toolbar { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }

.table { width: 100%; border-collapse: collapse; }
.table th, .table td { border-bottom: 1px solid var(--neutral-200); padding: 12px 8px; text-align: left; font-size: 14px; }

.avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--primary-100);
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 700; color: var(--primary-600);
}

.cover-hero {
  aspect-ratio: 16 / 9;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary-100), #fff 55%, var(--accent-pink));
}

.audio-player {
  display: flex; align-items: center; gap: 12px; padding: 12px 16px;
  border-radius: 12px; border: 1px solid var(--neutral-200); background: #fff;
}
.audio-bar { height: 6px; background: var(--neutral-200); border-radius: 999px; flex: 1; }
.audio-progress { width: 35%; height: 100%; background: var(--primary-600); border-radius: 999px; }

.tabs { display: flex; gap: 8px; border-bottom: 1px solid var(--neutral-200); }
.tab { padding: 10px 12px; color: var(--neutral-700); }
.tab.active { color: var(--primary-600); border-bottom: 2px solid var(--primary-600); }

.callout {
  background: #fff;
  border: 1px dashed var(--neutral-200);
  border-radius: 12px;
  padding: 12px;
  color: var(--neutral-700);
  font-size: 12px;
}

.footer-note { color: var(--neutral-500); font-size: 12px; margin-top: 12px; }

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

.split {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
}

@media (max-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .split { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .row { grid-template-columns: 1fr; }
}