/* ─── BASE (Wellmetrics デザインシステム) ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:       #fafaf8;
  --bg2:      #f4f3ef;
  --white:    #ffffff;
  --border:   #e8e6e0;
  --border-lt:#f0ede8;
  --text:     #141412;
  --text-sec: #3d3d38;
  --text-dim: #888880;
  --accent-green: #1a7a4a;
  --accent-green-lt: #e8f5ee;
  --accent-green-mid: #2da864;
  --c-sleep:  #5b4fcf;
  --c-sleep-lt:#eeecfb;
  --c-food:   #c47d1a;
  --c-food-lt:#fdf3e3;
  --c-food-mid:#e09838;
  --c-move:   #1a6ea8;
  --c-move-lt:#e6f1fa;
  --c-mental: #b03070;
  --c-mental-lt:#fce8f2;
  --c-biz:    #555550;
  --c-biz-lt: #f0f0ee;
  /* === 第3弾(TDEE)用テーマ: 琥珀系 === */
  --accent: var(--c-food);
  --accent-lt: var(--c-food-lt);
  --accent-mid: var(--c-food-mid);
  /* PFC色 */
  --pfc-p: #c47d1a;  /* タンパク質: 琥珀 */
  --pfc-f: #b03070;  /* 脂質: ローズ */
  --pfc-c: #5b4fcf;  /* 炭水化物: インディゴ */
  --mono: 'DM Mono', monospace;
  --head: 'Outfit', sans-serif;
  --body: 'Noto Sans JP', sans-serif;
  --radius: 12px;
  --radius-sm: 6px;
}

html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  font-weight: 400;
  line-height: 1.7;
  min-height: 100vh;
}

/* ─── NAV ─── */
nav {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 48px; height: 58px;
  background: rgba(250,250,248,0.92); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-logo { font-family: var(--head); font-weight: 700; font-size: 17px; color: var(--text); letter-spacing: -0.02em; display: flex; align-items: center; gap: 7px; text-decoration: none; }
.nav-logo-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent-green-mid); }
.nav-links { display: flex; gap: 0; list-style: none; }
.nav-links a { font-family: var(--body); font-size: 13px; font-weight: 400; color: var(--text-sec); text-decoration: none; padding: 0 14px; height: 58px; display: flex; align-items: center; border-bottom: 2px solid transparent; transition: color 0.15s, border-color 0.15s; }
.nav-links a:hover, .nav-links a.active { color: var(--text); border-bottom-color: var(--accent-green-mid); }
.nav-cta { font-family: var(--body); font-size: 12px; font-weight: 500; color: var(--white); background: var(--accent-green); padding: 8px 18px; border-radius: 100px; text-decoration: none; transition: opacity 0.15s; }
.nav-cta:hover { opacity: 0.85; }

/* ─── TOOL HERO (琥珀テーマ) ─── */
.tool-hero {
  position: relative; overflow: hidden; isolation: isolate;
  padding: 72px 48px 56px;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg2) 100%);
  border-bottom: 1px solid var(--border);
}
.tool-hero-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.tool-hero-glow { position: absolute; border-radius: 50%; filter: blur(70px); will-change: transform; }
.tool-hero-glow-1 {
  width: 360px; height: 360px; top: -100px; left: -60px;
  background: radial-gradient(circle, rgba(196,125,26,0.16) 0%, transparent 70%);
  animation: glowDrift1 26s ease-in-out infinite;
}
.tool-hero-glow-2 {
  width: 320px; height: 320px; bottom: -120px; right: 10%;
  background: radial-gradient(circle, rgba(224,152,56,0.10) 0%, transparent 70%);
  animation: glowDrift2 30s ease-in-out infinite;
}
@keyframes glowDrift1 {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(40px, 30px); }
  66% { transform: translate(-20px, 20px); }
}
@keyframes glowDrift2 {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-30px, -25px); }
}
.tool-hero-inner { position: relative; z-index: 1; max-width: 720px; margin: 0 auto; text-align: center; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 11px; color: var(--accent);
  letter-spacing: 0.06em; background: var(--accent-lt);
  padding: 4px 12px; border-radius: 100px; margin-bottom: 24px;
}
.hero-eyebrow-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--accent-mid); }
.tool-hero-title {
  font-family: var(--head); font-weight: 700;
  font-size: clamp(36px, 5vw, 56px); line-height: 1.1;
  letter-spacing: -0.03em; color: var(--text); margin-bottom: 12px;
}
.tool-hero-subtitle {
  font-family: var(--head); font-weight: 500;
  font-size: clamp(15px, 1.6vw, 18px); color: var(--accent);
  letter-spacing: -0.01em; margin-bottom: 24px;
}
.tool-hero-desc { font-size: 14px; color: var(--text-sec); line-height: 1.9; max-width: 540px; margin: 0 auto 36px; }
.tool-hero-meta {
  display: inline-flex; align-items: center; gap: 0;
  padding: 18px 28px; background: var(--white);
  border: 1px solid var(--border); border-radius: var(--radius); margin: 0 auto;
}
.meta-item { display: flex; flex-direction: column; align-items: center; padding: 0 22px; gap: 2px; }
.meta-num { font-family: var(--head); font-weight: 700; font-size: 22px; color: var(--text); letter-spacing: -0.02em; line-height: 1; }
.meta-label { font-family: var(--mono); font-size: 10px; color: var(--text-dim); letter-spacing: 0.04em; }
.meta-divider { width: 1px; height: 28px; background: var(--border); }

/* ─── MAIN ─── */
.tool-main { max-width: 760px; margin: 0 auto; padding: 56px 48px 80px; }

/* ─── FORMULA TABS ─── */
.formula-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 24px;
}
.formula-tab {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  cursor: pointer;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-family: var(--body);
  transition: all 0.15s;
}
.formula-tab:hover {
  border-color: var(--accent-mid);
  transform: translateY(-2px);
}
.formula-tab.active {
  background: var(--accent-lt);
  border-color: var(--accent);
  border-width: 2px;
  padding: 15px 19px; /* border-width相殺 */
}
.formula-tab-num {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.06em;
  margin-bottom: 2px;
}
.formula-tab.active .formula-tab-num { color: var(--accent); }
.formula-tab-name {
  font-family: var(--head);
  font-weight: 600;
  font-size: 15px;
  color: var(--text);
  letter-spacing: -0.01em;
}
.formula-tab.active .formula-tab-name { color: var(--accent); }
.formula-tab-desc {
  font-size: 11px;
  color: var(--text-dim);
  line-height: 1.5;
}

/* ─── CALC FORM ─── */
.calc-form {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 24px;
}
.field-row { display: flex; flex-direction: column; gap: 12px; }
.field-row.hidden { display: none; }
.field-label {
  font-family: var(--head);
  font-weight: 600;
  font-size: 13px;
  color: var(--text);
  letter-spacing: -0.01em;
}
.field-input-wrap {
  display: flex;
  align-items: center;
  gap: 16px;
}
/* Slider */
.field-slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: var(--border-lt);
  border-radius: 100px;
  outline: none;
  cursor: pointer;
}
.field-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 3px solid var(--white);
  box-shadow: 0 0 0 1px var(--accent);
  transition: transform 0.15s;
}
.field-slider::-webkit-slider-thumb:hover { transform: scale(1.15); }
.field-slider::-moz-range-thumb {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 3px solid var(--white);
  box-shadow: 0 0 0 1px var(--accent);
}
.field-slider::-moz-range-track {
  background: var(--border-lt);
  height: 4px;
  border-radius: 100px;
}
/* Number input */
.field-number-wrap {
  display: flex;
  align-items: baseline;
  gap: 4px;
  background: var(--bg);
  border: 1px solid var(--border-lt);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  min-width: 90px;
  transition: border-color 0.15s;
}
.field-number-wrap:focus-within {
  border-color: var(--accent);
  background: var(--white);
}
.field-number {
  width: 100%;
  border: none;
  background: none;
  font-family: var(--head);
  font-weight: 600;
  font-size: 15px;
  color: var(--text);
  text-align: right;
  outline: none;
  letter-spacing: -0.01em;
  -moz-appearance: textfield;
}
.field-number::-webkit-outer-spin-button,
.field-number::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.field-unit {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
}

/* Toggle group (gender) */
.toggle-group {
  display: inline-flex;
  background: var(--bg);
  border: 1px solid var(--border-lt);
  border-radius: 100px;
  padding: 3px;
  align-self: flex-start;
}
.toggle-btn {
  font-family: var(--body);
  font-size: 13px;
  color: var(--text-sec);
  background: none;
  border: none;
  padding: 8px 22px;
  border-radius: 100px;
  cursor: pointer;
  transition: all 0.15s;
}
.toggle-btn.active {
  background: var(--white);
  color: var(--accent);
  font-weight: 500;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

/* Activity grid */
.activity-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 8px;
}
.activity-btn {
  background: var(--bg);
  border: 1px solid var(--border-lt);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  cursor: pointer;
  text-align: left;
  font-family: var(--body);
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: all 0.15s;
}
.activity-btn:hover {
  background: var(--white);
  border-color: var(--accent-mid);
  transform: translateY(-1px);
}
.activity-btn.active {
  background: var(--accent-lt);
  border-color: var(--accent);
  border-width: 2px;
  padding: 13px 15px;
}
.activity-mult {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}
.activity-btn.active .activity-mult { color: var(--accent); }
.activity-name {
  font-family: var(--head);
  font-weight: 600;
  font-size: 13px;
  color: var(--text);
  letter-spacing: -0.01em;
}
.activity-btn.active .activity-name { color: var(--accent); }
.activity-desc {
  font-size: 10px;
  color: var(--text-dim);
  line-height: 1.5;
}

/* ─── RESULTS ─── */
.results { display: flex; flex-direction: column; gap: 16px; }

/* Primary BMR + TDEE */
.result-primary {
  background: linear-gradient(135deg, var(--white) 0%, var(--accent-lt) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 24px;
  align-items: center;
}
.primary-card { text-align: center; }
.primary-divider {
  width: 1px;
  height: 80px;
  background: var(--border);
}
.primary-label {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.primary-value {
  font-family: var(--head);
  font-weight: 700;
  font-size: 38px;
  color: var(--text);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 6px;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 6px;
}
.primary-card-tdee .primary-value { color: var(--accent); }
.primary-unit {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}
.primary-note {
  font-size: 11px;
  color: var(--text-sec);
  line-height: 1.6;
}

/* Goal card */
.goal-card,
.pfc-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}
.goal-card-label,
.pfc-card-label {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.goal-card-title,
.pfc-card-title {
  font-family: var(--head);
  font-weight: 600;
  font-size: 17px;
  color: var(--text);
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}
.pfc-card-note {
  font-size: 12px;
  color: var(--text-sec);
  line-height: 1.7;
  margin-bottom: 18px;
}
.goal-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 18px;
}
.goal-item {
  background: var(--bg);
  border: 1px solid var(--border-lt);
  border-radius: var(--radius-sm);
  padding: 18px 16px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
}
.goal-item-maintain {
  background: var(--accent-lt);
  border-color: var(--accent);
}
.goal-tag {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--text-dim);
  background: var(--white);
  padding: 2px 10px;
  border-radius: 100px;
  letter-spacing: 0.06em;
  border: 1px solid var(--border-lt);
}
.goal-tag-maintain {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
}
.goal-value {
  font-family: var(--head);
  font-weight: 700;
  font-size: 22px;
  color: var(--text);
  letter-spacing: -0.02em;
  line-height: 1;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 3px;
  margin-top: 2px;
}
.goal-item-maintain .goal-value { color: var(--accent); }
.goal-unit {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-dim);
  font-weight: 400;
}
.goal-item-maintain .goal-unit { color: var(--accent); }
.goal-detail {
  font-size: 10px;
  color: var(--text-dim);
  line-height: 1.5;
  margin-top: 2px;
}

/* PFC bar */
.pfc-bar {
  display: flex;
  height: 14px;
  border-radius: 100px;
  overflow: hidden;
  margin-bottom: 18px;
  background: var(--border-lt);
}
.pfc-segment {
  height: 100%;
  transition: width 0.4s ease;
}
.pfc-segment-p { background: var(--pfc-p); }
.pfc-segment-f { background: var(--pfc-f); }
.pfc-segment-c { background: var(--pfc-c); }

.pfc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.pfc-item {
  background: var(--bg);
  border: 1px solid var(--border-lt);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}
.pfc-item-head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.pfc-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.pfc-dot-p { background: var(--pfc-p); }
.pfc-dot-f { background: var(--pfc-f); }
.pfc-dot-c { background: var(--pfc-c); }
.pfc-label {
  font-family: var(--head);
  font-weight: 600;
  font-size: 12px;
  color: var(--text);
  letter-spacing: -0.01em;
}
.pfc-percent {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
  font-weight: 500;
}
.pfc-values {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-top: 6px;
  border-top: 1px solid var(--border-lt);
}
.pfc-grams {
  font-family: var(--head);
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
  letter-spacing: -0.02em;
}
.pfc-kcal {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-dim);
}

/* ─── SHARE CARD ─── */
.share-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
}
.share-card-label {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}
.share-card-text {
  font-size: 13px;
  color: var(--text-sec);
  margin-bottom: 18px;
}
.share-card-buttons {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
}
.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--body);
  font-size: 13px;
  font-weight: 500;
  height: 40px;
  min-width: 44px;
  padding: 0 16px;
  border-radius: 100px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s;
  border: 1px solid transparent;
}
.share-btn:hover {
  transform: translateY(-1px);
}
/* X (黒背景) */
.share-btn-x {
  background: #000;
  color: #fff;
  border-color: #000;
}
.share-btn-x:hover {
  background: #2a2a2a;
}
/* LINE (緑背景) */
.share-btn-line {
  background: #06C755;
  color: #fff;
  border-color: #06C755;
  padding: 0 14px;
}
.share-btn-line:hover {
  background: #05b34c;
  border-color: #05b34c;
}
/* Threads (白背景・黒ボーダー) */
.share-btn-threads {
  background: #fff;
  color: #000;
  border-color: #000;
  padding: 0 14px;
}
.share-btn-threads:hover {
  background: #f3f3f3;
}
/* はてブ (青背景) */
.share-btn-hatena {
  background: #00A4DE;
  color: #fff;
  border-color: #00A4DE;
  padding: 0 14px;
}
.share-btn-hatena:hover {
  background: #0091c4;
  border-color: #0091c4;
}

/* ─── RECO SECTION ─── */
.reco-section {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}
.reco-label {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.reco-title {
  font-family: var(--head);
  font-weight: 600;
  font-size: 17px;
  color: var(--text);
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}
.reco-desc {
  font-size: 13px;
  color: var(--text-sec);
  line-height: 1.7;
  margin-bottom: 18px;
}
.reco-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 14px;
}
.reco-card {
  background: var(--bg);
  border: 1px solid var(--border-lt);
  border-radius: var(--radius-sm);
  padding: 16px;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: all 0.15s;
}
.reco-card:hover {
  background: var(--white);
  border-color: var(--border);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.04);
}
.reco-card-cat {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.reco-card-title {
  font-family: var(--head);
  font-weight: 600;
  font-size: 13px;
  color: var(--text);
  letter-spacing: -0.01em;
  line-height: 1.5;
}
.reco-card-arrow {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  margin-top: auto;
}
.reco-disclaimer {
  font-size: 10px;
  color: var(--text-dim);
  line-height: 1.6;
  padding-top: 12px;
  border-top: 1px solid var(--border-lt);
}

/* ─── RELATED SECTION ─── */
.related-section {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}
.related-title {
  font-family: var(--head);
  font-weight: 600;
  font-size: 17px;
  color: var(--text);
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}
.related-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.related-card {
  background: var(--bg);
  border: 1px solid var(--border-lt);
  border-radius: var(--radius-sm);
  padding: 16px;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: all 0.15s;
}
.related-card:hover {
  background: var(--white);
  border-color: var(--border);
  transform: translateY(-2px);
}
.related-cat {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.06em;
  padding: 2px 8px;
  border-radius: 100px;
  display: inline-block;
  align-self: flex-start;
}
.related-cat.cat-mental { background: var(--c-mental-lt); color: var(--c-mental); }
.related-cat.cat-sleep  { background: var(--c-sleep-lt);  color: var(--c-sleep); }
.related-cat.cat-business { background: var(--c-biz-lt); color: var(--c-biz); }
.related-cat.cat-preventive { background: var(--accent-green-lt); color: var(--accent-green); }
.related-cat.cat-food { background: var(--c-food-lt); color: var(--c-food); }
.related-card-title {
  font-family: var(--head);
  font-weight: 600;
  font-size: 13px;
  color: var(--text);
  letter-spacing: -0.01em;
  line-height: 1.5;
}

/* ─── SEO BODY ─── */
.seo-body {
  margin-top: 64px;
  padding-top: 56px;
  border-top: 1px solid var(--border);
  font-size: 15px;
  line-height: 1.95;
  color: var(--text);
}
.seo-body h2 {
  font-family: var(--head);
  font-weight: 700;
  font-size: 22px;
  color: var(--text);
  letter-spacing: -0.02em;
  margin: 48px 0 16px;
  padding-top: 32px;
  border-top: 1px solid var(--border-lt);
}
.seo-body h2:first-child { margin-top: 0; padding-top: 0; border-top: none; }
.seo-body h3 {
  font-family: var(--head);
  font-weight: 600;
  font-size: 17px;
  color: var(--text);
  margin: 28px 0 10px;
}
.seo-body p { margin-bottom: 18px; }
.seo-body strong { font-weight: 500; }
.seo-body ul,
.seo-body ol { padding-left: 22px; margin-bottom: 20px; }
.seo-body li { margin-bottom: 8px; line-height: 1.8; }
.references-list { list-style: decimal; padding-left: 22px; }
.references-list li { font-size: 12px; color: var(--text-sec); line-height: 1.7; margin-bottom: 10px; }
.references-list em { font-style: italic; color: var(--text); }

/* ─── FOOTER ─── */
footer { border-top: 1px solid var(--border); background: var(--white); padding: 52px 48px 32px; }
.footer-inner { max-width: 1120px; margin: 0 auto; }
.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-logo { font-family: var(--head); font-weight: 700; font-size: 17px; color: var(--text); letter-spacing: -0.02em; display: flex; align-items: center; gap: 7px; margin-bottom: 12px; }
.footer-logo-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent-green-mid); }
.footer-tagline { font-size: 12px; color: var(--text-sec); line-height: 1.7; max-width: 220px; margin-bottom: 16px; }
.footer-disclaimer-small { font-size: 11px; color: var(--text-dim); line-height: 1.6; max-width: 240px; padding: 10px 12px; background: var(--bg2); border-radius: var(--radius-sm); border-left: 2px solid var(--border); }
.footer-col-label { font-family: var(--mono); font-size: 9px; color: var(--text-dim); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 14px; }
.footer-links { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.footer-links a { font-size: 13px; color: var(--text-sec); text-decoration: none; transition: color 0.15s; }
.footer-links a:hover { color: var(--accent-green); }
.footer-bottom { border-top: 1px solid var(--border-lt); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; }
.footer-copy { font-family: var(--mono); font-size: 10px; color: var(--text-dim); letter-spacing: 0.04em; }
.footer-policy-links { display: flex; gap: 20px; }
.footer-policy-links a { font-size: 11px; color: var(--text-dim); text-decoration: none; transition: color 0.15s; }
.footer-policy-links a:hover { color: var(--text-sec); }
.footer-ai-notice {
  font-size: 11px;
  color: var(--text-dim);
  line-height: 1.7;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border-lt);
  max-width: 100%;
}

/* ─── ACCESSIBILITY ─── */
@media (prefers-reduced-motion: reduce) {
  .tool-hero-glow-1, .tool-hero-glow-2 { animation: none !important; }
  .pfc-segment { transition: none !important; }
}

/* ─── RESPONSIVE ─── */
@media (max-width: 960px) {
  nav { padding: 0 24px; }
  .nav-links { display: none; }
  .tool-hero { padding: 56px 24px 44px; }
  .tool-hero-meta { padding: 14px 18px; flex-wrap: wrap; gap: 0; }
  .meta-item { padding: 0 14px; }
  .tool-main { padding: 40px 20px 60px; }

  .formula-tabs { grid-template-columns: 1fr; }
  .calc-form { padding: 24px 20px; }
  .field-input-wrap { flex-direction: column; align-items: stretch; gap: 12px; }
  .field-number-wrap { align-self: flex-start; }

  .result-primary {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 24px 20px;
  }
  .primary-divider { width: 60%; height: 1px; justify-self: center; }
  .primary-value { font-size: 32px; }

  .goal-card, .pfc-card,
  .share-card, .reco-section, .related-section {
    padding: 24px 20px;
  }
  .goal-grid { grid-template-columns: 1fr; gap: 8px; }
  .pfc-grid { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }

  footer { padding: 36px 24px 24px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; margin-bottom: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; align-items: flex-start; }
}
@media (max-width: 480px) {
  .tool-hero-meta { padding: 12px; }
  .meta-item { padding: 0 8px; }
  .meta-num { font-size: 18px; }
  .meta-divider { height: 22px; }
  .footer-top { grid-template-columns: 1fr; gap: 24px; }
}