:root {
  --ink: #1a1523;
  --muted: #5c5668;
  --paper: #faf8fc;
  --card: #ffffff;
  --line: rgba(26, 21, 35, 0.08);
  --radius: 20px;
  --shadow: 0 12px 40px rgba(26, 21, 35, 0.08);
  --font: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

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

.wrap {
  width: min(1080px, calc(100% - 2rem));
  margin-inline: auto;
}

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(12px);
  background: rgba(250, 248, 252, 0.88);
  border-bottom: 1px solid var(--line);
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.brand-logo {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  object-fit: cover;
  box-shadow: 0 4px 14px rgba(124, 58, 237, 0.2);
}

.brand-text strong {
  display: block;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}

.brand-text span {
  font-size: 0.8rem;
  color: var(--muted);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 1.1rem;
  border-radius: 999px;
  background: linear-gradient(135deg, #7c3aed, #5b21b6);
  color: #fff;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 6px 20px rgba(91, 33, 182, 0.25);
}

.nav-cta[hidden] {
  display: none;
}

/* hero */
.hero {
  padding: 3.5rem 0 2.5rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2.5rem;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 0.75rem;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  background: #ede9fe;
  color: #5b21b6;
  font-size: 0.82rem;
  font-weight: 600;
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 4.5vw, 2.75rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.hero-lead {
  margin: 0 0 1.5rem;
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 34em;
}

.hero-visual {
  position: relative;
}

.hero-visual img {
  width: 100%;
  border-radius: 28px;
  box-shadow: var(--shadow);
  object-fit: contain;
}

.hero-glow {
  position: absolute;
  inset: 10% -8% -10% 8%;
  background: radial-gradient(circle at 30% 30%, #c4b5fd 0%, transparent 55%),
    radial-gradient(circle at 70% 60%, #99f6e4 0%, transparent 50%);
  z-index: -1;
  filter: blur(24px);
  opacity: 0.7;
}

/* sections */
.section {
  padding: 3rem 0;
}

.section-head {
  text-align: center;
  margin-bottom: 2rem;
}

.section-head h2 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.section-head p {
  margin: 0;
  color: var(--muted);
  max-width: 36em;
  margin-inline: auto;
}

/* podcast cards */
.podcast-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.podcast-card {
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.podcast-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 48px rgba(26, 21, 35, 0.12);
}

.podcast-card-accent {
  height: 6px;
}

.podcast-card-cover {
  padding: 1.25rem 1.25rem 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, var(--paper) 100%);
}

.podcast-card-cover img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: contain;
}

.podcast-card-body {
  padding: 1rem 1.25rem 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.podcast-card-head {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  margin-bottom: 0.65rem;
}

.podcast-emoji {
  font-size: 1.75rem;
  line-height: 1;
}

.podcast-card-head h3 {
  margin: 0;
  font-size: 1.15rem;
}

.podcast-tagline {
  margin: 0.15rem 0 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.podcast-desc {
  margin: 0 0 1rem;
  font-size: 0.92rem;
  color: var(--muted);
  flex: 1;
}

.podcast-listen {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  margin-top: 0.25rem;
  padding: 0.65rem 1rem;
  border-radius: 12px;
  background: linear-gradient(135deg, #7c3aed, #5b21b6);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  box-shadow: 0 6px 18px rgba(91, 33, 182, 0.22);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.podcast-listen:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 22px rgba(91, 33, 182, 0.3);
}

/* footer */
.site-footer {
  margin-top: 2rem;
  padding: 2rem 0 2.5rem;
  border-top: 1px solid var(--line);
  text-align: center;
  color: var(--muted);
  font-size: 0.88rem;
}

.site-footer p {
  margin: 0.35rem 0;
}

.site-footer a {
  color: #5b21b6;
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    order: -1;
    max-width: 420px;
    margin-inline: auto;
  }

  .podcast-grid {
    grid-template-columns: 1fr;
  }
}