.formula-hub {
  --bg: #f8f4f0;
  --text: #2a221c;
  --muted: #6b5d54;
  --primary: #8b4518;
  --primary-2: #b5651d;
  --line: #e8d9cc;
  --card: #ffffff;
  --soft: #faf5ef;
  --shadow: 0 14px 30px rgba(74, 44, 28, 0.12);

  color: var(--text);
  background: linear-gradient(180deg, #fdfaf7 0%, var(--bg) 100%);
}

.formula-hub * { box-sizing: border-box; }
.formula-container { width: min(1180px, 92vw); margin: 0 auto; }
.formula-section { padding: 56px 0; }
.formula-soft { background: rgba(255, 255, 255, 0.72); }

.formula-hero {
  padding: 56px 0 38px;
  background:
    radial-gradient(circle at top right, rgba(181, 101, 29, 0.14), transparent 36%),
    linear-gradient(135deg, #f5ebe3 0%, #ead9cc 100%);
  border-bottom: 1px solid rgba(139, 69, 24, 0.08);
}

.formula-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 26px;
  align-items: stretch;
}

.formula-hero-main,
.formula-hero-card,
.formula-panel,
.formula-card,
.symptom-formula-card,
.formula-summary-card,
.formula-faq-list details {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow);
}

.formula-hero-main { padding: 30px; }
.formula-hero-card { padding: 24px; display: flex; flex-direction: column; justify-content: center; }
.formula-kicker,
.formula-section-head p { margin: 0 0 10px; color: var(--primary); font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; }
.formula-hero h1 { margin: 0; font-size: clamp(2rem, 4vw, 3.15rem); line-height: 1.08; color: #4a2c1c; }
.formula-lead { max-width: 760px; margin: 16px 0 0; color: #5c4032; line-height: 1.85; font-size: 1.03rem; }
.formula-hero-card strong { color: var(--primary); font-size: 1.15rem; }
.formula-hero-card p { margin: 12px 0; color: var(--muted); line-height: 1.75; }
.formula-hero-card span { color: #6b4423; font-weight: 700; }

.formula-search { display: flex; gap: 10px; max-width: 680px; margin-top: 22px; }
.formula-search input {
  flex: 1;
  min-width: 0;
  border: 1px solid #dcc4b4;
  border-radius: 14px;
  padding: 13px 16px;
  color: var(--text);
  background: #fffdfb;
  outline: none;
}
.formula-search input:focus { border-color: var(--primary-2); box-shadow: 0 0 0 3px rgba(181, 101, 29, 0.15); }
.formula-search button,
.formula-mode-switch button {
  border: 0;
  border-radius: 14px;
  padding: 12px 20px;
  color: #fff;
  background: linear-gradient(120deg, var(--primary), var(--primary-2));
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 12px 20px rgba(139, 69, 24, 0.2);
}

.formula-quick-intents,
.formula-tags,
.formula-links-cloud,
.formula-links,
.formula-card-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.formula-quick-intents { margin-top: 16px; }
.formula-quick-intents a,
.formula-tags a,
.formula-links-cloud a,
.formula-links a,
.formula-card-tags span {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 8px 12px;
  text-decoration: none;
  color: #5c3824;
  background: #fdf6ef;
  border: 1px solid #edd9c8;
  font-weight: 700;
  line-height: 1.45;
}

.formula-tags-secondary a { background: #fff9f3; border-color: #e5d0c0; font-weight: 600; }
.formula-tax-note { margin: 14px 0 6px; font-size: 0.9rem; color: var(--muted); }

.formula-section-head { margin-bottom: 24px; }
.formula-section-head h2 { margin: 0; font-size: clamp(1.55rem, 3vw, 2.25rem); line-height: 1.18; color: #3d2818; }
.formula-head-row { display: flex; justify-content: space-between; gap: 18px; align-items: end; }

.formula-category-grid,
.formula-link-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.formula-panel { padding: 22px; }
.formula-panel-wide { grid-column: 1 / -1; }
.formula-panel h3,
.symptom-formula-card h3,
.formula-card h3 { margin: 0 0 14px; color: var(--text); }

.symptom-formula-map { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 16px; }
.symptom-formula-card { padding: 18px; }
.symptom-formula-title { display: inline-flex; margin-bottom: 14px; color: var(--primary); font-size: 1.15rem; font-weight: 900; text-decoration: none; }
.formula-links { align-items: flex-start; }

.formula-mode-switch { display: inline-flex; gap: 8px; padding: 6px; border-radius: 16px; background: #f5ebe3; border: 1px solid #e8d4c4; }
.formula-mode-switch button { padding: 9px 14px; box-shadow: none; background: transparent; color: var(--primary); }
.formula-mode-switch button.active { color: #fff; background: linear-gradient(120deg, var(--primary), var(--primary-2)); }

.formula-card-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 16px; }
.formula-card { overflow: hidden; transition: transform 0.2s ease, box-shadow 0.2s ease; }
.formula-card:hover { transform: translateY(-3px); box-shadow: 0 18px 38px rgba(74, 44, 28, 0.16); }
.formula-card a { display: flex; flex-direction: column; height: 100%; padding: 20px; color: inherit; text-decoration: none; }
.formula-card h3 { color: var(--primary); }
.formula-card p { margin: 0 0 16px; color: var(--muted); line-height: 1.72; flex: 1; }
.formula-card-tags span { padding: 6px 10px; font-size: 0.86rem; background: var(--soft); }

.formula-alpha-panel { display: grid; gap: 18px; }
.formula-alpha-index { display: flex; flex-wrap: wrap; gap: 8px; padding: 16px; background: #ffffff; border: 1px solid var(--line); border-radius: 20px; box-shadow: var(--shadow); }
.formula-alpha-index button { display: inline-flex; align-items: center; gap: 5px; min-width: 42px; justify-content: center; border: 1px solid #e5d0c0; border-radius: 999px; padding: 8px 10px; color: #5c3824; background: #fffaf6; font-weight: 900; cursor: pointer; }
.formula-alpha-index button span { color: var(--muted); font-size: 0.78rem; font-weight: 800; }
.formula-alpha-index button:hover:not(:disabled),
.formula-alpha-index button.active { color: #ffffff; border-color: transparent; background: linear-gradient(120deg, var(--primary), var(--primary-2)); }
.formula-alpha-index button.active span { color: rgba(255, 255, 255, 0.9); }
.formula-alpha-index button:disabled { cursor: not-allowed; color: #a8988c; background: #f5f0ec; opacity: 0.65; }
.formula-alpha-result-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; color: var(--muted); }
.formula-alpha-result-head strong { color: #3d2818; font-size: 1.2rem; }
.formula-alpha-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.formula-alpha-card { background: #ffffff; border: 1px solid var(--line); border-radius: 18px; box-shadow: 0 10px 24px rgba(74, 44, 28, 0.08); overflow: hidden; }
.formula-alpha-card[hidden],
.formula-alpha-panel[hidden],
.formula-featured-panel[hidden] { display: none !important; }
.formula-alpha-card a { display: block; height: 100%; padding: 18px; color: inherit; text-decoration: none; }
.formula-alpha-card h3 { margin: 0; color: var(--primary); font-size: 1.08rem; }
.formula-alpha-card p { display: -webkit-box; overflow: hidden; margin: 12px 0 0; color: var(--muted); line-height: 1.65; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.formula-alpha-card:hover { border-color: #d4b49a; box-shadow: 0 16px 32px rgba(74, 44, 28, 0.12); }

.formula-empty-hint { padding: 22px; }
.formula-empty-hint h3 { margin-top: 0; color: var(--primary); }

.formula-summary-section { background: linear-gradient(135deg, #f5ebe3, #ead9cc); }
.formula-summary-card { padding: 26px; }
.formula-summary-text { display: grid; gap: 10px; max-width: 900px; }
.formula-summary-text p { margin: 0; color: #5c4032; line-height: 1.85; }

.formula-faq-list { display: grid; gap: 12px; background: transparent; border: 0; box-shadow: none; }
.formula-faq-list details { padding: 17px 20px; }
.formula-faq-list summary { cursor: pointer; color: var(--text); font-weight: 800; }
.formula-faq-list p { margin: 12px 0 0; color: var(--muted); line-height: 1.75; }

@media (max-width: 1100px) {
  .formula-hero-grid { grid-template-columns: 1fr; }
  .symptom-formula-map,
  .formula-card-grid,
  .formula-alpha-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 767px) {
  .formula-section { padding: 42px 0; }
  .formula-hero { padding: 42px 0 30px; }
  .formula-hero-main,
  .formula-hero-card,
  .formula-panel,
  .formula-summary-card { padding: 20px; }
  .formula-search { flex-direction: column; }
  .formula-search button { width: 100%; }
  .formula-category-grid,
  .formula-link-grid,
  .symptom-formula-map,
  .formula-card-grid,
  .formula-alpha-grid { grid-template-columns: 1fr; }
  .formula-head-row { align-items: flex-start; flex-direction: column; }
  .formula-mode-switch { width: 100%; overflow-x: auto; }
  .formula-alpha-index { flex-wrap: nowrap; overflow-x: auto; }
  .formula-alpha-index button { flex: 0 0 auto; }
}