/* === FEATURE PAGE SHARED STYLES === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --text-1: #0f172a;
  --text-2: #475569;
  --text-3: #94a3b8;
  --bg-1: #ffffff;
  --bg-2: #f8fafc;
  --brand: #2563eb;
  --brand-dark: #1e3a8a;
  --brand-light: #eff6ff;
  --border: #e2e8f0;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--text-1);
  background: var(--bg-1);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* === TOP BAR === */
.top-bar {
  background: #0f172a;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  position: sticky;
  top: 0;
  z-index: 100;
}
.top-bar__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}
.logo-ico {
  width: 28px; height: 28px;
  background: var(--brand);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.logo-lbl { color: #fff; font-size: 0.875rem; font-weight: 700; }
.top-bar__sep { color: #334155; font-size: 0.875rem; }
.top-bar__crumb { color: #94a3b8; text-decoration: none; font-size: 0.875rem; transition: color 0.2s; }
.top-bar__crumb:hover { color: #fff; }
.top-bar__current { color: #cbd5e1; font-size: 0.875rem; font-weight: 500; }

/* === HERO === */
.feat-hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  padding: 72px 1.5rem 64px;
  text-align: center;
  color: #fff;
}
.feat-hero__icon {
  width: 64px; height: 64px;
  border-radius: 16px;
  background: rgba(37,99,235,0.15);
  border: 1px solid rgba(37,99,235,0.3);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: #60a5fa;
}
.feat-hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 16px;
}
.feat-hero__sub {
  max-width: 620px;
  margin: 0 auto;
  font-size: 1.0625rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.7;
}

/* === PAGE CONTENT === */
.page {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 1.5rem 80px;
}

h2 {
  font-size: 1.375rem;
  font-weight: 700;
  margin: 48px 0 16px;
  letter-spacing: -0.02em;
}
h2:first-child { margin-top: 0; }

h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 32px 0 12px;
  letter-spacing: -0.01em;
}

p { color: var(--text-2); margin-bottom: 16px; }
ul { color: var(--text-2); margin: 0 0 20px 1.25rem; }
li { margin-bottom: 8px; }
li strong { color: var(--text-1); }

/* === HIGHLIGHT BOX === */
.highlight-box {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px 28px;
  background: var(--brand-light);
  border: 1px solid rgba(37,99,235,0.15);
  border-radius: 12px;
  margin-bottom: 40px;
}
.highlight-box__stat {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--brand);
  flex-shrink: 0;
  min-width: 56px;
  text-align: center;
}
.highlight-box__text {
  font-size: 0.9375rem;
  color: var(--text-2);
  line-height: 1.6;
}
.highlight-box__text strong { color: var(--text-1); }

/* === FORMULA BOX === */
.formula-box {
  background: #0f172a;
  color: #e2e8f0;
  border-radius: 10px;
  padding: 24px 28px;
  margin: 20px 0 28px;
}
.formula-box code {
  display: block;
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.9rem;
  color: #60a5fa;
  margin: 8px 0;
  word-break: break-all;
}
.formula-box p {
  color: rgba(255,255,255,0.5);
  font-size: 0.875rem;
  margin-bottom: 8px;
}
.formula-box p:last-child { margin-bottom: 0; }

/* === CTA BOX === */
.cta-box {
  margin-top: 56px;
  padding: 40px 36px;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  border-radius: 14px;
  text-align: center;
  color: #fff;
}
.cta-box h3 {
  color: #fff;
  font-size: 1.25rem;
  margin: 0 0 8px;
}
.cta-box p {
  color: rgba(255,255,255,0.55);
  font-size: 0.9375rem;
  margin-bottom: 24px;
}
.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--brand);
  color: #fff;
  padding: 14px 32px;
  border-radius: 6px;
  font-family: var(--font);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s, transform 0.2s;
}
.btn-cta:hover { background: #1d4ed8; transform: translateY(-1px); }

/* === ORGAN GRID === */
.organ-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin: 20px 0 32px;
}
.organ-card {
  padding: 20px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-2);
  transition: border-color 0.2s;
}
.organ-card:hover { border-color: var(--brand); }
.organ-card__name {
  font-weight: 700;
  font-size: 0.9375rem;
  margin-bottom: 4px;
}
.organ-card__markers {
  font-size: 0.8125rem;
  color: var(--text-3);
  line-height: 1.5;
}

/* === RISK BANDS === */
.risk-bands {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin: 16px 0 32px;
}
.risk-band {
  padding: 16px 12px;
  border-radius: 8px;
  text-align: center;
  font-size: 0.8125rem;
  font-weight: 600;
  color: #fff;
}
.risk-band span {
  display: block;
  font-size: 1.125rem;
  font-weight: 800;
  margin-bottom: 2px;
}
.risk-band--optimal { background: #15803d; }
.risk-band--mild { background: #1e40af; }
.risk-band--moderate { background: #d97706; }
.risk-band--high { background: #dc2626; }

/* === INDEX TABLE === */
.index-table { margin: 20px 0 32px; }
.index-row {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}
.index-row:last-child { border-bottom: none; }
.index-row__num {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--brand-light);
  color: var(--brand);
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}
.index-row__body { flex: 1; min-width: 0; }
.index-row__name { font-weight: 700; font-size: 0.9375rem; color: var(--text-1); }
.index-row__desc { font-size: 0.8125rem; color: var(--text-2); margin-top: 2px; }
.index-row__cite { font-size: 0.75rem; color: var(--text-3); font-style: italic; margin-top: 2px; }
.index-row__domain {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--brand);
  background: var(--brand-light);
  padding: 4px 10px;
  border-radius: 100px;
  flex-shrink: 0;
  margin-top: 4px;
}

/* === MARKER GRID === */
.marker-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 16px 0 32px;
}
.marker-chip {
  padding: 10px 18px;
  border-radius: 8px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-1);
}

/* === EXAMPLE BOX === */
.example-box {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px 28px;
  margin: 20px 0 28px;
}
.example-box__title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-3);
  margin-bottom: 16px;
}
.example-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9375rem;
}
.example-row:last-child { border-bottom: none; }
.example-row span { color: var(--text-2); }
.example-row strong { color: var(--text-1); }
.example-row .accent { color: var(--brand); }
.example-row .good { color: #15803d; }
.example-row--delta { background: rgba(21,128,61,0.04); border-radius: 6px; padding: 8px 12px; border-bottom: none; margin-top: 4px; }

/* === CHECKLIST === */
.checklist { margin: 16px 0 32px; }
.checklist__item {
  display: flex;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  align-items: flex-start;
}
.checklist__item:last-child { border-bottom: none; }
.checklist__icon {
  width: 24px; height: 24px;
  border-radius: 50%;
  background: #15803d;
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}
.checklist__item div:last-child { font-size: 0.9375rem; color: var(--text-2); }
.checklist__item strong { color: var(--text-1); }

/* === MEAL SCHEDULE === */
.meal-schedule {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 16px 0 28px;
}
.meal-slot {
  padding: 16px;
  border-radius: 8px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  text-align: center;
}
.meal-slot strong { display: block; font-size: 0.875rem; color: var(--text-1); }
.meal-slot span { font-size: 0.75rem; color: var(--text-3); }

/* === MACRO GRID === */
.macro-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 16px 0 28px;
}
.macro-card {
  padding: 16px;
  border-radius: 8px;
  background: #0f172a;
  color: #fff;
  text-align: center;
}
.macro-card__organ { font-size: 0.8125rem; font-weight: 600; color: #60a5fa; margin-bottom: 4px; }
.macro-card__split { font-size: 0.875rem; font-weight: 700; letter-spacing: 0.02em; }

/* === EXERCISE GRID === */
.exercise-grid { margin: 20px 0 32px; }
.exercise-cat {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}
.exercise-cat:last-child { border-bottom: none; }
.exercise-cat__dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--cat-color);
  flex-shrink: 0;
  margin-top: 6px;
}
.exercise-cat__name { font-weight: 700; font-size: 0.9375rem; color: var(--text-1); }
.exercise-cat__desc { font-size: 0.8125rem; color: var(--text-2); margin-top: 2px; }

/* === STEPS VERTICAL === */
.steps-vertical { margin: 20px 0 32px; }
.step-v {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}
.step-v:last-child { border-bottom: none; }
.step-v__num {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  font-size: 0.8125rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.step-v__body strong { display: block; color: var(--text-1); font-size: 0.9375rem; margin-bottom: 4px; }
.step-v__body p { font-size: 0.875rem; color: var(--text-2); margin: 0; }

/* === SYNDROME LIST === */
.syndrome-list { margin: 20px 0 32px; }
.syndrome-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 16px;
  transition: border-color 0.2s;
}
.syndrome-card:hover { border-color: var(--brand); }
.syndrome-card__header {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 14px;
}
.syndrome-card__num {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: #fef2f2;
  color: #dc2626;
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.syndrome-card__name { font-weight: 700; font-size: 1rem; color: var(--text-1); }
.syndrome-card__criteria { font-size: 0.8125rem; color: var(--text-3); margin-top: 2px; }
.syndrome-card__markers {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}
.syndrome-card__markers span {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 100px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  color: var(--text-2);
}
.syndrome-card__action {
  font-size: 0.8125rem;
  color: var(--text-2);
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
.syndrome-card__action strong { color: #15803d; }

/* === SPECIALIST GRID === */
.specialist-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 20px 0 32px;
}
.specialist-card {
  padding: 18px 20px;
  border-radius: 10px;
  background: var(--bg-2);
  border: 1px solid var(--border);
}
.specialist-card__organ { font-weight: 700; font-size: 0.9375rem; color: var(--text-1); margin-bottom: 2px; }
.specialist-card__role { font-size: 0.8125rem; color: var(--brand); }

/* === FOOTER === */
.feat-footer {
  background: #0f172a;
  padding: 24px 1.5rem;
  text-align: center;
}
.feat-footer p {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.35);
  margin: 0;
}

/* === RESPONSIVE === */
@media (max-width: 640px) {
  .feat-hero { padding: 56px 1.5rem 48px; }
  .feat-hero h1 { font-size: 1.625rem; }
  .organ-grid { grid-template-columns: 1fr; }
  .risk-bands { grid-template-columns: repeat(2, 1fr); }
  .index-row { flex-wrap: wrap; }
  .index-row__domain { margin-top: 6px; }
  .meal-schedule { grid-template-columns: repeat(2, 1fr); }
  .macro-grid { grid-template-columns: repeat(2, 1fr); }
  .specialist-grid { grid-template-columns: 1fr; }
  .highlight-box { flex-direction: column; text-align: center; }
  .syndrome-card__markers { gap: 4px; }
}