:root {
  color-scheme: light;
  --bg: #f8f2e9;
  --ink: #1f2a2e;
  --muted: #5b6b73;
  --accent: #d1784a;
  --accent-2: #2f6c6b;
  --card: #ffffff;
  --border: rgba(31, 42, 46, 0.12);
  --shadow: 0 18px 40px rgba(31, 42, 46, 0.12);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  color: var(--ink);
  background: var(--bg);
  min-height: 100vh;
}

h1, h2 {
  font-family: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  letter-spacing: 0.02em;
  margin: 0;
}

p {
  margin: 0;
}

.bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
}

.bg .orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(0px);
  opacity: 0.65;
  mix-blend-mode: multiply;
  animation: float 18s ease-in-out infinite;
}

.orb-a {
  width: 520px;
  height: 520px;
  background: radial-gradient(circle at 30% 30%, #f4c7a2, #e2a083 60%, transparent 70%);
  top: -160px;
  left: -120px;
}

.orb-b {
  width: 420px;
  height: 420px;
  background: radial-gradient(circle at 70% 70%, #b8d4cf, #7fb0a8 60%, transparent 70%);
  bottom: -160px;
  right: -120px;
  animation-delay: -6s;
}

.bg .grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(31, 42, 46, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 42, 46, 0.06) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.25;
}

.shell {
  max-width: 1280px;
  margin: 0 auto;
  padding: 40px 24px 64px;
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  align-items: flex-end;
  border-bottom: 1px solid var(--border);
  padding-bottom: 24px;
  margin-bottom: 28px;
}

.eyebrow {
  font-size: 0.9rem;
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 0.25em;
  font-weight: 600;
  margin-bottom: 10px;
}

.hero h1 {
  font-size: 2.4rem;
  line-height: 1.2;
}

.subhead {
  margin-top: 10px;
  color: var(--muted);
}

.meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(120px, 1fr));
  gap: 12px;
}

.stat {
  background: rgba(255, 255, 255, 0.7);
  padding: 12px 16px;
  border-radius: 14px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.7);
}

.stat .label {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
}

.stat .value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-2);
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 28px;
}

.panel {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  padding: 20px;
}

.panel-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.favorites-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.panel-title h2 {
  font-size: 1.2rem;
}

.note {
  font-size: 0.85rem;
  color: var(--muted);
}

.filter-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(0, 1fr));
  gap: 12px;
  align-items: end;
}

.cascade {
  grid-column: auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  position: relative;
}

.cascade::after {
  content: "→";
  position: absolute;
  left: 50%;
  top: 32px;
  transform: translateX(-50%);
  color: var(--accent-2);
  font-weight: 600;
  font-size: 0.85rem;
  pointer-events: none;
  background: var(--card);
  padding: 0 6px;
}

.field {
  display: grid;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--muted);
}

select {
  appearance: none;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #fff;
  font-size: 0.95rem;
  color: var(--ink);
  width: 100%;
}

.cascade select {
  padding: 8px 10px;
  font-size: 0.9rem;
}

select:disabled {
  background: rgba(47, 108, 107, 0.06);
  color: rgba(31, 42, 46, 0.5);
  cursor: not-allowed;
}

select:focus {
  outline: 2px solid rgba(209, 120, 74, 0.3);
  border-color: var(--accent);
}

.ghost {
  border: 1px solid var(--accent);
  background: transparent;
  color: var(--accent);
  padding: 6px 10px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.85rem;
}

.primary {
  border: none;
  background: var(--accent);
  color: #fff;
  padding: 10px 14px;
  border-radius: 12px;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  box-shadow: 0 10px 22px rgba(209, 120, 74, 0.3);
}

.primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: none;
}

.results .cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.card {
  position: relative;
  padding: 16px;
  border-radius: 16px;
  background: #fff7f1;
  border: 1px solid rgba(209, 120, 74, 0.3);
  min-height: 200px;
  display: grid;
  gap: 10px;
  animation: rise 0.6s ease both;
  animation-delay: calc(var(--i, 0) * 30ms);
}

.card h3 {
  font-size: 1.05rem;
  margin: 0;
}

.card .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  background: rgba(47, 108, 107, 0.12);
  color: var(--accent-2);
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
}

.card p {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.4;
}

.favorite-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  border: none;
  background: rgba(255, 255, 255, 0.85);
  border-radius: 50%;
  width: 34px;
  height: 34px;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(31, 42, 46, 0.18);
  display: grid;
  place-items: center;
  font-size: 1.1rem;
  color: var(--muted);
}

.favorite-btn.active {
  color: var(--accent);
}

.favorites {
  position: sticky;
  top: 24px;
  max-height: calc(100vh - 80px);
  overflow: auto;
}

.favorite-actions {
  margin-top: 16px;
  display: grid;
  gap: 8px;
}

.favorite-item {
  border-bottom: 1px dashed var(--border);
  padding: 14px 0;
}

.favorite-item:last-child {
  border-bottom: none;
}

.favorite-item h4 {
  margin: 0 0 6px;
  font-size: 1rem;
  color: var(--accent-2);
}

.expert-list {
  margin-top: 12px;
  display: grid;
  gap: 12px;
}

.expert-block {
  background: rgba(47, 108, 107, 0.08);
  padding: 10px;
  border-radius: 12px;
}

.info-grid {
  display: grid;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--muted);
}

.info-grid strong {
  color: var(--ink);
  font-weight: 600;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0px) translateX(0px); }
  50% { transform: translateY(16px) translateX(8px); }
}

@media (max-width: 1100px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .favorites {
    position: static;
    max-height: none;
  }

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

  .cascade {
    grid-column: span 2;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cascade::after {
    content: "→";
  }
}

@media (max-width: 720px) {
  .hero {
    flex-direction: column;
    align-items: flex-start;
  }

  .meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    width: 100%;
  }

  .results .cards {
    grid-template-columns: 1fr;
  }
}