:root {
  --ld-ink: #1a1f1c;
  --ld-ink-soft: #2c342f;
  --ld-mist: #e8ece6;
  --ld-paper: #f4f6f1;
  --ld-jade: #3d5c4a;
  --ld-jade-deep: #2a4034;
  --ld-gold: #b08d57;
  --ld-muted: #5c665f;
  --ld-line: rgba(26, 31, 28, 0.12);
  --ld-max: 1120px;
  --ld-font-display: "ZCOOL XiaoWei", "Noto Serif SC", serif;
  --ld-font-body: "Noto Serif SC", "Songti SC", serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ld-ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(61, 92, 74, 0.12), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(176, 141, 87, 0.1), transparent 50%),
    linear-gradient(180deg, #eef1eb 0%, var(--ld-paper) 40%, #e7ebe4 100%);
  font-family: var(--ld-font-body);
  font-size: 1.05rem;
  line-height: 1.75;
}

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

a {
  color: var(--ld-jade-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--ld-gold);
}

.ld-wrap {
  width: min(100% - 2rem, var(--ld-max));
  margin-inline: auto;
}

.ld-site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(10px);
  background: rgba(244, 246, 241, 0.86);
  border-bottom: 1px solid var(--ld-line);
}

.ld-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.25rem;
}

.ld-brand {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  text-decoration: none;
  color: inherit;
}

.ld-brand__cn {
  font-family: var(--ld-font-display);
  font-size: 1.45rem;
  letter-spacing: 0.08em;
  line-height: 1.2;
}

.ld-brand__en {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ld-muted);
}

.ld-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.ld-nav a {
  text-decoration: none;
  color: var(--ld-ink-soft);
  font-size: 0.95rem;
}

.ld-nav a:hover,
.ld-nav .current-menu-item > a {
  color: var(--ld-jade);
}

.ld-nav-toggle {
  display: none;
  border: 1px solid var(--ld-line);
  background: transparent;
  padding: 0.45rem 0.7rem;
  font: inherit;
  cursor: pointer;
}

.ld-hero {
  position: relative;
  min-height: min(88vh, 720px);
  display: grid;
  align-items: end;
  overflow: hidden;
  color: var(--ld-mist);
  background:
    linear-gradient(180deg, rgba(26, 31, 28, 0.25) 0%, rgba(26, 31, 28, 0.72) 55%, rgba(26, 31, 28, 0.92) 100%),
    url("../img/hero-mist.svg") center/cover no-repeat,
    linear-gradient(135deg, #243028, #1a1f1c 45%, #2f3b33);
}

.ld-hero__inner {
  padding: 4.5rem 0 3.5rem;
  max-width: 38rem;
  animation: ld-rise 0.9s ease both;
}

.ld-hero__brand {
  font-family: var(--ld-font-display);
  font-size: clamp(2.6rem, 6vw, 4rem);
  letter-spacing: 0.12em;
  margin: 0 0 0.6rem;
  line-height: 1.15;
}

.ld-hero__en {
  margin: 0 0 1.25rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(232, 236, 230, 0.72);
  font-size: 0.85rem;
}

.ld-hero__lead {
  margin: 0 0 1.75rem;
  font-size: 1.1rem;
  color: rgba(232, 236, 230, 0.9);
  max-width: 28rem;
}

.ld-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.ld-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.65rem 1.25rem;
  border: 1px solid transparent;
  text-decoration: none;
  font-size: 0.95rem;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.ld-btn:hover {
  transform: translateY(-1px);
}

.ld-btn--solid {
  background: var(--ld-gold);
  color: var(--ld-ink);
}

.ld-btn--solid:hover {
  background: #c4a06a;
  color: var(--ld-ink);
}

.ld-btn--ghost {
  border-color: rgba(232, 236, 230, 0.45);
  color: var(--ld-mist);
}

.ld-btn--ghost:hover {
  border-color: var(--ld-mist);
  color: #fff;
}

.ld-btn--dark {
  background: var(--ld-jade);
  color: #fff;
}

.ld-btn--dark:hover {
  background: var(--ld-jade-deep);
  color: #fff;
}

.ld-section {
  padding: 4rem 0;
}

.ld-section--tight {
  padding: 2.5rem 0;
}

.ld-section__head {
  margin-bottom: 1.75rem;
  max-width: 38rem;
  animation: ld-rise 0.8s ease both;
}

.ld-section__head h2 {
  font-family: var(--ld-font-display);
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  letter-spacing: 0.08em;
  margin: 0 0 0.5rem;
  font-weight: 400;
}

.ld-section__head p {
  margin: 0;
  color: var(--ld-muted);
}

.ld-pillars {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.85rem;
}

.ld-pillar {
  display: block;
  padding: 1.25rem 1rem;
  border-top: 2px solid var(--ld-jade);
  background: rgba(255, 255, 255, 0.45);
  text-decoration: none;
  color: inherit;
  transition: background 0.2s ease, transform 0.2s ease;
  animation: ld-rise 0.7s ease both;
}

.ld-pillar:nth-child(2) { animation-delay: 0.05s; }
.ld-pillar:nth-child(3) { animation-delay: 0.1s; }
.ld-pillar:nth-child(4) { animation-delay: 0.15s; }
.ld-pillar:nth-child(5) { animation-delay: 0.2s; }

.ld-pillar:hover {
  background: rgba(255, 255, 255, 0.8);
  transform: translateY(-2px);
  color: inherit;
}

.ld-pillar strong {
  display: block;
  font-family: var(--ld-font-display);
  font-size: 1.15rem;
  margin-bottom: 0.35rem;
  letter-spacing: 0.06em;
}

.ld-pillar span {
  color: var(--ld-muted);
  font-size: 0.9rem;
}

.ld-episode-list {
  display: grid;
  gap: 1rem;
}

.ld-episode {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1rem;
  align-items: center;
  padding: 1.15rem 1.25rem;
  border: 1px solid var(--ld-line);
  background: rgba(255, 255, 255, 0.55);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.ld-episode:hover {
  border-color: rgba(61, 92, 74, 0.35);
  background: #fff;
  color: inherit;
}

.ld-episode__no {
  font-family: var(--ld-font-display);
  font-size: 1.4rem;
  color: var(--ld-jade);
  min-width: 2.5rem;
}

.ld-episode__meta {
  margin: 0.25rem 0 0;
  color: var(--ld-muted);
  font-size: 0.88rem;
}

.ld-episode h3 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
}

.ld-cta-band {
  margin: 1rem 0 3rem;
  padding: 2rem;
  background: linear-gradient(120deg, var(--ld-jade-deep), #3a4f42 55%, #4a5e40);
  color: var(--ld-mist);
}

.ld-cta-band h2 {
  font-family: var(--ld-font-display);
  letter-spacing: 0.08em;
  margin: 0 0 0.5rem;
  font-weight: 400;
}

.ld-cta-band p {
  margin: 0 0 1.25rem;
  color: rgba(232, 236, 230, 0.85);
  max-width: 34rem;
}

.ld-page-hero {
  padding: 3rem 0 1.5rem;
  border-bottom: 1px solid var(--ld-line);
  margin-bottom: 2rem;
}

.ld-page-hero h1 {
  font-family: var(--ld-font-display);
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  letter-spacing: 0.08em;
  margin: 0 0 0.6rem;
  font-weight: 400;
}

.ld-page-hero p {
  margin: 0;
  color: var(--ld-muted);
  max-width: 40rem;
}

.ld-content {
  max-width: 42rem;
}

.ld-content > *:first-child {
  margin-top: 0;
}

.ld-content h2,
.ld-content h3 {
  font-family: var(--ld-font-display);
  letter-spacing: 0.05em;
  font-weight: 400;
}

.ld-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  color: var(--ld-muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.ld-badge {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border: 1px solid var(--ld-line);
  color: var(--ld-jade-deep);
  font-size: 0.8rem;
}

.ld-audio {
  width: 100%;
  margin: 1.25rem 0 1.75rem;
}

.ld-site-footer {
  margin-top: 3rem;
  padding: 2.5rem 0;
  border-top: 1px solid var(--ld-line);
  background: rgba(255, 255, 255, 0.35);
}

.ld-footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 2rem;
}

.ld-site-footer .ld-brand__cn {
  font-size: 1.3rem;
}

.ld-footer-note {
  color: var(--ld-muted);
  font-size: 0.9rem;
  max-width: 28rem;
}

.ld-footer-nav {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.4rem;
}

.ld-footer-nav a {
  text-decoration: none;
}

.ld-copy {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--ld-line);
  color: var(--ld-muted);
  font-size: 0.85rem;
}

@keyframes ld-rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  .ld-pillars {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .ld-footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .ld-nav-toggle {
    display: inline-flex;
  }

  .ld-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    padding: 0.5rem 0 1rem;
  }

  .ld-site-header.is-open .ld-nav {
    display: flex;
  }

  .ld-header-inner {
    flex-wrap: wrap;
  }

  .ld-episode {
    grid-template-columns: auto 1fr;
  }

  .ld-episode__cta {
    display: none;
  }

  .ld-pillars {
    grid-template-columns: 1fr;
  }
}