/* AI 牙齒美容檢測 — Mobile-first */
:root {
  --primary: #2D3748;
  --primary-dark: #1A202C;
  --primary-light: #F4F6F8;
  --silver-bright: #E8EAED;
  --silver: #BCC0C7;
  --silver-deep: #8E9298;
  --silver-dark: #6E7480;
  --silver-soft: #DDE0E5;
  --accent: #B8956A;
  --bg: #F4F6F8;
  --card: #FFFFFF;
  --text: #1A202C;
  --text-soft: #5C6573;
  --border: #DDE0E5;
  --shadow: 0 2px 12px rgba(58, 68, 82, 0.06);
  --shadow-lg: 0 8px 24px rgba(58, 68, 82, 0.12);

  /* 銀色金屬刷紋漸層（高級感主視覺） */
  --gradient-platinum: linear-gradient(135deg, #F5F6F8 0%, #DDE0E5 22%, #BCC0C7 50%, #9DA1A8 78%, #6E7480 100%);
  --gradient-silver-soft: linear-gradient(135deg, #F8F9FB 0%, #E8EAED 50%, #BCC0C7 100%);
  --gradient-gunmetal: linear-gradient(135deg, #2D3748 0%, #1A202C 100%);

  --radius: 16px;
  --radius-sm: 10px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang TC', 'Microsoft JhengHei', 'Helvetica Neue', sans-serif;
  --font-serif: 'Noto Serif TC', 'Songti TC', 'Heiti TC', serif;
}

html, body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  font-feature-settings: 'cv11', 'ss01';
}

h1, h2, h3, .score-num, .ms-num, .sd-value,
.pharmacist-card .pc-name,
.distance-stat .ds-value #dsSteps {
  font-family: var(--font-serif);
  letter-spacing: -0.01em;
  font-weight: 700;
}

img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* Top bar */
.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.logo {
  font-weight: 700;
  font-size: 15px;
  color: var(--text);
}
.badge-pill {
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-weight: 600;
}

.trust-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 20px;
  background: linear-gradient(180deg, #1A202C 0%, #2D3748 100%);
  color: rgba(255,255,255,0.92);
  font-size: 12px;
  letter-spacing: 0.4px;
  font-weight: 500;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.trust-bar .tb-icon {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--gradient-platinum);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  color: var(--primary);
  box-shadow: 0 0 8px rgba(188, 192, 199, 0.5);
}
.trust-bar b { color: white; font-weight: 700; }

/* Container */
.container {
  max-width: 540px;
  margin: 0 auto;
  padding: 24px 20px 100px;
}

/* Step container */
.step { display: none; animation: fadeIn 0.3s ease; }
.step.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* Hero */
.hero-section {
  position: relative;
  text-align: center;
  padding: 8px 0 0;
}
.hero-bg-mesh {
  position: absolute;
  inset: -40px -20px 0;
  background:
    radial-gradient(ellipse 60% 40% at 25% 20%, rgba(188, 192, 199, 0.20) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 80% 35%, rgba(232, 234, 237, 0.30) 0%, transparent 65%),
    radial-gradient(ellipse 70% 30% at 50% 80%, rgba(110, 116, 128, 0.06) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}
.hero-section > * { position: relative; z-index: 1; }

.hero-emblem {
  display: flex;
  justify-content: center;
  margin: 12px 0 28px;
  filter: drop-shadow(0 12px 24px rgba(110, 116, 128, 0.18));
}

.hero-icon { text-align: center; margin: 16px 0 24px; }
h1 { font-size: 28px; line-height: 1.3; text-align: center; margin-bottom: 12px; letter-spacing: -0.5px; }
h2 { font-size: 22px; margin-bottom: 6px; }
h3 { font-size: 17px; margin-bottom: 10px; }

.hero-title {
  font-family: var(--font-serif);
  font-size: 38px;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -1px;
  text-align: center;
  margin-bottom: 18px;
  color: var(--primary-dark);
  background: linear-gradient(180deg, #1A202C 0%, #5C6573 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-divider {
  display: flex;
  justify-content: center;
  margin: 0 0 14px;
}
.hero-divider span {
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--silver-deep), transparent);
}
.hero-subtitle {
  font-size: 13px;
  letter-spacing: 4px;
  color: var(--silver-dark);
  text-align: center;
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: 28px;
}

.lead {
  font-size: 15px;
  color: var(--text-soft);
  text-align: center;
  margin-bottom: 28px;
  padding: 0 8px;
  line-height: 1.7;
}
.lead b { color: var(--primary-dark); }

/* Hero pillars */
.hero-pillars {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin: 8px 0 32px;
  padding: 22px 14px;
  background: linear-gradient(180deg, #FFFFFF 0%, #FAFBFC 100%);
  border-radius: var(--radius);
  box-shadow:
    0 4px 16px rgba(110, 116, 128, 0.08),
    inset 0 1px 0 rgba(255,255,255,1);
  border: 1px solid var(--border);
}
.pillar { flex: 1; text-align: center; }
.pillar-num {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 6px;
  letter-spacing: -0.5px;
}
.pillar-label {
  font-size: 11px;
  color: var(--silver-dark);
  line-height: 1.4;
  letter-spacing: 0.2px;
}
.pillar-divider {
  width: 1px;
  height: 36px;
  background: linear-gradient(180deg, transparent, var(--border), transparent);
}

.hero-cta {
  margin-bottom: 24px;
  background: var(--gradient-gunmetal);
  position: relative;
  overflow: hidden;
  letter-spacing: 1px;
  font-size: 16px;
}
.hero-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(105deg, transparent 0, rgba(255,255,255,0.05) 2px, transparent 4px);
  pointer-events: none;
}

.hero-checklist {
  list-style: none;
  padding: 0;
  text-align: center;
  margin: 8px 0 0;
}
.hero-checklist li {
  display: inline-block;
  font-size: 12px;
  color: var(--text-soft);
  margin: 0 8px 6px;
  padding-left: 14px;
  position: relative;
  letter-spacing: 0.3px;
}
.hero-checklist li::before {
  content: '·';
  position: absolute;
  left: 4px;
  color: var(--silver-deep);
  font-weight: 700;
}

.sub { color: var(--text-soft); font-size: 14px; margin-bottom: 20px; }

.bullets {
  list-style: none;
  background: var(--primary-light);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  margin: 16px 0 24px;
}
.bullets li {
  padding: 4px 0 4px 22px;
  position: relative;
  font-size: 14px;
  color: var(--text);
}
.bullets li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 4px;
  color: var(--primary);
  font-weight: 700;
}
.bullets.small { padding: 10px 14px; margin: 12px 0; }
.bullets.small li { font-size: 13px; padding: 2px 0 2px 18px; color: var(--text-soft); }

/* Progress dots */
.progress {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 20px;
}
.dot {
  width: 28px;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  transition: background 0.3s;
}
.dot.active { background: var(--primary); }

/* Question block */
.q-block { margin-bottom: 28px; }
.q-label {
  display: block;
  font-weight: 600;
  font-size: 15px;
  margin-bottom: 12px;
  color: var(--text);
}

/* Button group (single-select) */
.btn-group {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.btn-group .opt {
  padding: 14px 8px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card);
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  transition: all 0.2s;
}
.btn-group .opt:hover { border-color: var(--primary); }
.btn-group .opt.selected {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
  box-shadow: var(--shadow);
}

/* Check grid (multi-select) */
.check-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.check-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card);
  cursor: pointer;
  font-size: 14px;
  transition: all 0.2s;
}
.check-item:hover { border-color: var(--primary); }
.check-item input { display: none; }
.check-item span {
  flex: 1;
  position: relative;
  padding-left: 26px;
}
.check-item span::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--border);
  border-radius: 4px;
  background: white;
  transition: all 0.2s;
}
.check-item input:checked + span::before {
  background: var(--primary);
  border-color: var(--primary);
}
.check-item input:checked + span::after {
  content: '✓';
  position: absolute;
  left: 4px;
  top: 50%;
  transform: translateY(-50%);
  color: white;
  font-weight: 700;
  font-size: 13px;
}
.check-item:has(input:checked) {
  background: var(--primary-light);
  border-color: var(--primary);
}

/* Buttons */
.btn {
  padding: 14px 20px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.btn-primary {
  background: var(--primary);
  color: white;
  box-shadow: var(--shadow);
}
.btn-primary:hover { background: var(--primary-dark); }
.btn-primary:disabled {
  background: var(--border);
  color: var(--text-soft);
  cursor: not-allowed;
  box-shadow: none;
}
.btn-ghost {
  background: transparent;
  color: var(--text-soft);
  border: 1.5px solid var(--border);
}
.btn-ghost:hover { color: var(--text); border-color: var(--text-soft); }
.btn-large {
  padding: 16px 28px;
  font-size: 17px;
  width: 100%;
}

.actions {
  display: flex;
  gap: 10px;
  margin-top: 24px;
}
.actions .btn { flex: 1; }

/* Photo zone */
.photo-zone { margin-top: 20px; }
.photo-frame {
  width: 100%;
  aspect-ratio: 4/3;
  background: var(--primary-light);
  border-radius: var(--radius);
  border: 2px dashed var(--primary);
  position: relative;
  overflow: hidden;
  margin-bottom: 16px;
}
.photo-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  gap: 8px;
}
.photo-placeholder p { font-size: 14px; }
#photoPreview { width: 100%; height: 100%; object-fit: cover; display: none; }
#photoPreview.active { display: block; }
.photo-frame.has-photo .photo-placeholder { display: none; }
.photo-actions { display: flex; gap: 10px; margin-bottom: 16px; }
.photo-actions .btn { flex: 1; }

/* Loading */
.loading-block {
  text-align: center;
  padding: 50px 20px;
}
.loading-emblem {
  position: relative;
  width: 88px;
  height: 88px;
  margin: 0 auto 28px;
}
.emblem-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid transparent;
  border-top-color: var(--silver-deep);
  border-right-color: var(--silver);
  animation: spin 1.6s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}
.emblem-ring-2 {
  inset: 8px;
  border-top-color: var(--silver);
  border-left-color: var(--silver-bright);
  animation: spin 2.4s cubic-bezier(0.4, 0, 0.2, 1) infinite reverse;
}
.emblem-core {
  position: absolute;
  inset: 18px;
  border-radius: 50%;
  background: var(--gradient-platinum);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: 24px;
  color: var(--primary);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.6), 0 4px 12px rgba(110,116,128,0.2);
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-title {
  font-size: 19px;
  margin-bottom: 24px;
  font-family: var(--font-serif);
  font-weight: 600;
  color: var(--primary);
}
.loading-steps {
  list-style: none;
  text-align: left;
  max-width: 320px;
  margin: 0 auto 24px;
  background: var(--card);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.lstep {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  font-size: 14px;
  color: var(--text-soft);
  transition: all 0.4s;
  opacity: 0.45;
}
.lstep-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 1.5px solid var(--silver);
  flex-shrink: 0;
  position: relative;
  transition: all 0.4s;
}
.lstep.active .lstep-dot {
  border-color: var(--primary);
  background: radial-gradient(circle, var(--primary) 30%, transparent 30%);
  animation: pulse 1.2s ease-in-out infinite;
}
.lstep.active {
  opacity: 1;
  color: var(--primary);
  font-weight: 600;
}
.lstep.done {
  opacity: 0.7;
  color: var(--text-soft);
}
.lstep.done .lstep-dot {
  background: var(--gradient-platinum);
  border-color: var(--silver-deep);
}
.lstep.done .lstep-dot::after {
  content: '✓';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: var(--primary);
  font-weight: 700;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.15); }
}
.loading-sub { color: var(--text-soft); font-size: 13px; }

/* Result */
.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}
.shade-badge {
  padding: 8px 18px;
  background: var(--gradient-platinum);
  color: var(--primary-dark);
  border-radius: 999px;
  font-weight: 800;
  font-size: 16px;
  letter-spacing: 1px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.6), 0 2px 6px rgba(110,116,128,0.2);
  border: 1px solid rgba(255,255,255,0.5);
}

.score-card {
  background: var(--gradient-platinum);
  color: var(--primary-dark);
  padding: 24px 20px;
  border-radius: var(--radius);
  margin-bottom: 20px;
  box-shadow:
    0 12px 28px rgba(110, 116, 128, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.4);
}
.score-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(105deg,
      rgba(255,255,255,0.0) 0px,
      rgba(255,255,255,0.06) 2px,
      rgba(0,0,0,0.02) 4px,
      rgba(255,255,255,0.0) 6px);
  pointer-events: none;
  mix-blend-mode: overlay;
}
.score-card::after {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 60%;
  height: 180%;
  background: radial-gradient(ellipse at center, rgba(255,255,255,0.5) 0%, transparent 60%);
  pointer-events: none;
}
.score-card .big-score, .score-card .score-grid { position: relative; z-index: 1; }
.big-score { text-align: center; margin-bottom: 20px; }
.score-num { font-size: 56px; font-weight: 800; line-height: 1; }
.score-label { font-size: 14px; opacity: 0.9; margin-top: 4px; }
.score-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  background: rgba(255,255,255,0.55);
  border-radius: var(--radius-sm);
  padding: 14px 10px;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.6);
}
.mini-score { text-align: center; }
.ms-num { font-size: 22px; font-weight: 700; line-height: 1.2; color: var(--primary); }
.ms-label { font-size: 11px; color: var(--silver-dark); margin-top: 2px; line-height: 1.2; font-weight: 500; }

.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}
.card.pharmacist {
  background: linear-gradient(135deg, #FAFBFC, #F1F5F9);
  border-left: 3px solid var(--accent);
}
.card.education { background: #FAFCFD; border: 1px solid var(--border); box-shadow: none; }
.card p { color: var(--text); font-size: 15px; line-height: 1.7; }

.zones {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 14px;
}
.zone-chip {
  text-align: center;
  padding: 10px 6px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  background: var(--primary-light);
  color: var(--primary-dark);
}
.zone-chip .zone-label { display: block; font-weight: 600; font-size: 11px; opacity: 0.8; }
.zone-chip .zone-value { font-weight: 700; font-size: 14px; margin-top: 2px; }
.zone-chip[data-level="moderate"] { background: #F8F2E6; color: #8B6914; }
.zone-chip[data-level="heavy"] { background: #F5E8E8; color: #8B3A3A; }

.reasoning {
  list-style: none;
  margin: 12px 0;
}
.reasoning li {
  padding: 10px 12px 10px 36px;
  position: relative;
  background: var(--primary-light);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  font-size: 14px;
  line-height: 1.6;
}
.reasoning li::before {
  content: '→';
  position: absolute;
  left: 14px;
  top: 10px;
  color: var(--primary);
  font-weight: 700;
}

.products { display: flex; flex-direction: column; gap: 12px; margin-top: 16px; }
.product-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: all 0.2s;
}
.product-card.preorder_zeczec, .product-card.coming_soon {
  background: linear-gradient(135deg, #FAFBFC, #F1F5F9);
  border-color: var(--silver-soft);
}
.product-card .pname {
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
}
.product-card .ptag {
  font-size: 13px;
  color: var(--text-soft);
}
.product-card .pprice {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-dark);
}
.product-card .pprice s { color: var(--text-soft); font-weight: 400; font-size: 14px; margin-right: 6px; }
.product-card .ph-list {
  list-style: none;
  font-size: 13px;
  color: var(--text-soft);
  background: #FAFCFD;
  padding: 8px 12px;
  border-radius: 6px;
}
.product-card .ph-list li {
  padding: 2px 0 2px 16px;
  position: relative;
}
.product-card .ph-list li::before {
  content: '·';
  position: absolute;
  left: 6px;
  color: var(--primary);
  font-weight: 700;
}
.product-card .pcta {
  margin-top: 4px;
  padding: 12px;
  text-align: center;
  background: var(--primary);
  color: white;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
}
.product-card .pcta.preorder { background: var(--silver); }
.product-card .badge {
  display: inline-block;
  font-size: 11px;
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--primary);
  color: white;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.card.education details { margin-bottom: 12px; }
.card.education summary {
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  padding: 10px 0;
  color: var(--text);
  list-style-position: outside;
}
.card.education ul, .card.education div { padding: 8px 0 12px 16px; font-size: 14px; color: var(--text-soft); }
.card.education li { padding: 4px 0 4px 14px; position: relative; line-height: 1.6; }
.card.education li::before { content: '·'; position: absolute; left: 0; color: var(--primary); font-weight: 700; }

.cta-line {
  background: var(--gradient-gunmetal);
  color: white;
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  margin: 20px 0;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}
.cta-line::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(105deg,
      transparent 0px,
      rgba(255,255,255,0.04) 2px,
      transparent 4px);
  pointer-events: none;
}
.cta-line p { color: rgba(255,255,255,0.92); position: relative; z-index: 1; }
.cta-line .btn-primary {
  background: var(--gradient-platinum);
  color: var(--primary);
  position: relative;
  z-index: 1;
  border: 1px solid rgba(255,255,255,0.4);
}
.cta-line .btn-primary:hover { filter: brightness(1.05); }
.cta-line p { font-size: 14px; margin-bottom: 14px; color: var(--text); }

.disclaimer {
  font-size: 12px;
  color: var(--text-soft);
  text-align: center;
  padding: 16px;
  line-height: 1.6;
}

.pharmacist-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: linear-gradient(180deg, #FFFFFF 0%, #FAFBFC 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin: 16px 0;
  box-shadow: var(--shadow);
}
.pharmacist-card .pc-avatar {
  flex-shrink: 0;
  filter: drop-shadow(0 4px 8px rgba(110,116,128,0.15));
}
.pharmacist-card .pc-info { flex: 1; min-width: 0; }
.pharmacist-card .pc-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 2px;
}
.pharmacist-card .pc-credentials {
  font-size: 12px;
  color: var(--silver-dark);
  letter-spacing: 0.3px;
  margin-bottom: 6px;
}
.pharmacist-card .pc-quote {
  font-size: 13px;
  color: var(--text);
  font-style: italic;
  line-height: 1.5;
  border-left: 2px solid var(--silver);
  padding-left: 10px;
}

.academic-note {
  background: linear-gradient(180deg, #FAFBFC 0%, #F4F6F8 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  margin: 16px 0;
}
.academic-note .an-title {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--silver-dark);
  font-weight: 700;
  margin-bottom: 6px;
}
.academic-note p {
  font-size: 12px;
  color: var(--text-soft);
  line-height: 1.7;
}

.footer {
  text-align: center;
  padding: 20px;
  color: var(--text-soft);
  font-size: 12px;
}

/* VITA 色階圖 */
.shade-scale-card {
  background: linear-gradient(180deg, #FFFFFF 0%, #FAFBFC 100%);
  border-radius: var(--radius);
  padding: 22px 20px 20px;
  margin-bottom: 16px;
  box-shadow:
    0 8px 24px rgba(110,116,128,0.10),
    inset 0 1px 0 rgba(255,255,255,1);
  border: 1px solid var(--border);
}
.shade-scale-card h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 17px;
  margin-bottom: 6px;
}
.shade-scale-card .ssc-sub {
  color: var(--text-soft);
  font-size: 13px;
  margin-bottom: 22px;
}
.shade-scale {
  position: relative;
  margin: 36px 6px 8px;
}
.shade-bar {
  display: flex;
  height: 36px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.08);
  border: 1px solid var(--border);
}
.shade-stop {
  flex: 1;
  position: relative;
}
.shade-bar + .shade-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 6px;
  font-size: 11px;
  color: var(--text-soft);
  letter-spacing: 0.4px;
  font-weight: 500;
}
.shade-bar + .shade-labels span { flex: 1; text-align: center; }

.shade-marker {
  position: absolute;
  top: -32px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: left 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.shade-marker .marker-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 3px solid white;
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.25);
  margin-bottom: 4px;
}
.shade-marker .marker-pin {
  width: 2px;
  height: 8px;
  background: currentColor;
  margin-bottom: 2px;
}
.shade-marker .marker-label {
  font-size: 11px;
  font-weight: 700;
  white-space: nowrap;
  padding: 2px 8px;
  border-radius: 4px;
  background: currentColor;
}
.shade-marker .marker-label span { color: white; }

.shade-marker.current { color: var(--primary); }
.shade-marker.predicted { color: var(--silver-deep); top: auto; bottom: -32px; flex-direction: column-reverse; }
.shade-marker.predicted .marker-pin { margin-top: 2px; margin-bottom: 0; }
.shade-marker.predicted .marker-label { margin-bottom: 4px; }
.shade-marker.target { color: var(--accent); top: -32px; }
.shade-marker.target .marker-dot {
  width: 16px; height: 16px;
  background: linear-gradient(135deg, #FFF8E1, #B8956A);
  border-color: white;
}

.shade-arrow {
  position: absolute;
  height: 3px;
  background: linear-gradient(90deg, var(--silver-deep), var(--silver-bright));
  top: 50%;
  transform: translateY(-50%);
  border-radius: 2px;
  pointer-events: none;
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 1px 3px rgba(110,116,128,0.3);
}
.shade-arrow::after {
  content: '';
  position: absolute;
  left: -6px;
  top: 50%;
  transform: translateY(-50%);
  border: 5px solid transparent;
  border-right-color: var(--silver-bright);
}

.shade-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 28px 0 8px;
}
.shade-detail-cell {
  padding: 12px;
  border-radius: var(--radius-sm);
  text-align: center;
  border: 1px solid var(--border);
}
.shade-detail-cell.current {
  background: linear-gradient(135deg, #F4F6F8, #DDE0E5);
  border-color: var(--silver-deep);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.8);
}
.shade-detail-cell.predicted {
  background: var(--gradient-silver-soft);
  border-color: var(--silver);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.8);
}
.shade-detail-cell .sd-value { color: var(--primary-dark); }
.shade-detail-cell .sd-label {
  font-size: 11px;
  color: var(--text-soft);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin-bottom: 4px;
}
.shade-detail-cell .sd-value {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.1;
}
.shade-detail-cell .sd-desc {
  font-size: 11px;
  color: var(--text-soft);
  margin-top: 4px;
}
.shade-disclaimer {
  font-size: 11px;
  color: var(--text-soft);
  text-align: center;
  margin-top: 12px;
  line-height: 1.5;
}

.distance-stat {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin: 8px 0 22px;
  padding: 14px 16px;
  background: var(--gradient-silver-soft);
  border-radius: var(--radius-sm);
  border: 1px solid var(--silver);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.7);
}
.distance-stat .ds-label {
  font-size: 13px;
  color: var(--silver-dark);
  font-weight: 600;
  letter-spacing: 0.4px;
}
.distance-stat .ds-value {
  display: flex;
  align-items: baseline;
  gap: 4px;
  font-weight: 800;
  color: var(--primary-dark);
}
.distance-stat .ds-value #dsSteps { font-size: 32px; line-height: 1; }
.distance-stat .ds-value .ds-unit { font-size: 14px; color: var(--silver-dark); font-weight: 600; }
.distance-stat.is-zero .ds-value #dsSteps { color: var(--accent); }
.distance-stat.is-zero .ds-label::after { content: '（已達白皙頂峰）'; color: var(--accent); margin-left: 4px; font-weight: 600; }

.shade-labels .lbl-target {
  color: var(--accent);
  font-weight: 700;
  font-size: 11px;
}

@media (min-width: 600px) {
  .container { padding: 32px 24px 100px; }
  h1 { font-size: 32px; }
}