/* ═══════════ 基本設定 ═══════════ */
* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --primary: #0d3b66;
  --primary-light: #1a5490;
  --accent: #f4a261;
  --green: #2a9d8f;
  --red: #e63946;
  --gray-50: #f8f9fa;
  --gray-100: #e9ecef;
  --gray-300: #ced4da;
  --gray-600: #6c757d;
  --gray-900: #212529;
  --shadow: 0 4px 12px rgba(0,0,0,.08);
  --shadow-lg: 0 8px 24px rgba(0,0,0,.12);
  --radius: 14px;
}
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Microsoft JhengHei", sans-serif;
  color: var(--gray-900);
  background: linear-gradient(180deg, #f4f7fb 0%, #fff 200px);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; }
mark { background: #fff3a0; padding: 0 4px; border-radius: 3px; }

/* ═══════════ Hero ═══════════ */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #fff;
  padding: 60px 20px 70px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(circle at 30% 20%, rgba(244,162,97,.18), transparent 50%);
  pointer-events: none;
}
.hero-inner { position: relative; max-width: 800px; margin: 0 auto; }
.hero h1 { font-size: clamp(1.6rem, 5vw, 2.4rem); margin-bottom: 14px; letter-spacing: 1px; }
.hero-sub { font-size: clamp(1rem, 2.5vw, 1.15rem); opacity: .95; margin-bottom: 18px; }
.hero-sub mark { background: rgba(244,162,97,.85); color: #fff; }
.hero-by { font-size: .9rem; opacity: .75; }

/* ═══════════ Tabs ═══════════ */
.tabs {
  display: flex;
  gap: 8px;
  max-width: 900px;
  margin: -28px auto 24px;
  padding: 0 16px;
  position: sticky;
  top: 0;
  z-index: 10;
}
.tab {
  flex: 1;
  padding: 14px 8px;
  border: none;
  background: #fff;
  color: var(--gray-600);
  font-size: clamp(.85rem, 2.4vw, 1rem);
  font-weight: 600;
  border-radius: var(--radius);
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: all .2s;
  font-family: inherit;
}
.tab:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.tab.active {
  background: var(--primary);
  color: #fff;
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* ═══════════ Main ═══════════ */
main { max-width: 900px; margin: 0 auto; padding: 16px; }
.tab-pane { display: none; animation: fadeIn .3s; }
.tab-pane.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.sec-title {
  font-size: clamp(1.3rem, 3.5vw, 1.6rem);
  color: var(--primary);
  margin-bottom: 6px;
  padding-bottom: 10px;
  border-bottom: 3px solid var(--accent);
  display: inline-block;
}
.sec-sub { color: var(--gray-600); margin-bottom: 22px; font-size: .92rem; }

/* ═══════════ TAB1 卡片 ═══════════ */
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 18px;
}
@media (max-width: 600px) { .card-grid { grid-template-columns: 1fr; } }
.card {
  background: #fff;
  border-radius: var(--radius);
  padding: 22px 20px;
  box-shadow: var(--shadow);
  border-top: 4px solid var(--primary);
  transition: transform .2s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.card.warn { border-top-color: var(--red); background: #fff8f8; }
.card-icon { font-size: 2rem; margin-bottom: 8px; }
.card h3 { color: var(--primary); margin-bottom: 10px; font-size: 1.15rem; }
.card.warn h3 { color: var(--red); }
.card p { font-size: .94rem; margin-bottom: 8px; }
.card-note {
  font-size: .88rem;
  color: var(--gray-600);
  background: var(--gray-50);
  padding: 10px 12px;
  border-radius: 8px;
  border-left: 3px solid var(--accent);
}

/* ═══════════ TAB2 商品 ═══════════ */
.product-list { display: flex; flex-direction: column; gap: 14px; }
.loading { color: var(--gray-600); padding: 30px; text-align: center; }
.product {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.product-head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  user-select: none;
  transition: background .2s;
}
.product-head:hover { background: var(--gray-50); }
.product-num {
  flex: 0 0 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #e58e3e);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}
.product-title {
  flex: 1;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary);
}
.product-arrow {
  flex: 0 0 24px;
  color: var(--gray-600);
  transition: transform .25s;
}
.product.open .product-arrow { transform: rotate(180deg); }
.product-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.product.open .product-body { max-height: 800px; }
.product-body-inner { padding: 0 20px 20px; }
.product-body-inner ul { padding-left: 22px; }
.product-body-inner li { margin-bottom: 8px; font-size: .94rem; }
.product-body-inner li b, .product-body-inner li strong { color: var(--primary); }

/* ═══════════ TAB3 ═══════════ */
.org-block {
  background: #fff;
  border-radius: var(--radius);
  padding: 22px 22px 26px;
  margin-bottom: 18px;
  box-shadow: var(--shadow);
  border-left: 5px solid var(--primary);
}
.org-block.green { border-left-color: var(--green); }
.org-block.red { border-left-color: var(--red); }
.org-block h3 {
  color: var(--primary);
  margin-bottom: 14px;
  font-size: 1.2rem;
}
.org-block.green h3 { color: var(--green); }
.org-block.red h3 { color: var(--red); }
.org-block h4 {
  margin: 18px 0 10px;
  color: var(--gray-900);
  font-size: 1rem;
}
.org-block p { margin-bottom: 10px; font-size: .95rem; }

.hl-box {
  background: var(--gray-50);
  padding: 14px 16px;
  border-radius: 10px;
  margin-bottom: 12px;
  border-left: 3px solid var(--accent);
}
.hl-box strong { display: block; color: var(--primary); margin-bottom: 6px; }
.hl-box ul { padding-left: 22px; margin-top: 6px; }
.hl-box li { margin-bottom: 6px; font-size: .92rem; }

.big-list { padding-left: 24px; }
.big-list li { margin-bottom: 12px; font-size: .96rem; }
.big-list li strong { color: var(--primary); }
.big-list li em { color: var(--accent); font-style: normal; font-weight: 600; }

.bad-list {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 8px;
  margin: 12px 0;
}
.bad-list li {
  background: #fff5f5;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: .92rem;
  border-left: 3px solid var(--red);
}
.bad-list li.worst { background: #ffe0e0; font-weight: 700; grid-column: 1 / -1; }
.compare-note {
  background: #fff5f5;
  padding: 12px 14px;
  border-radius: 8px;
  font-size: .9rem;
  color: var(--gray-900);
  margin: 12px 0;
}

/* 比較表 */
.table-wrap { overflow-x: auto; margin: 10px 0; }
.compare-tbl {
  width: 100%;
  border-collapse: collapse;
  font-size: .9rem;
  background: #fff;
}
.compare-tbl th, .compare-tbl td {
  padding: 10px 12px;
  border: 1px solid var(--gray-100);
  text-align: left;
  vertical-align: top;
}
.compare-tbl thead th {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  position: sticky;
  left: 0;
}
.compare-tbl tr.xinan {
  background: #e6f7f4;
  font-weight: 600;
}
.compare-tbl tr.xinan td:first-child {
  color: var(--green);
  font-weight: 700;
}
.compare-tbl td .ok { color: var(--green); font-weight: 700; }
.compare-tbl td .ng { color: var(--red); font-weight: 700; }
.compare-tbl td .warn { color: #d9822b; font-weight: 700; }

.footnote {
  margin-top: 12px;
  padding: 10px 14px;
  background: #fff8e6;
  border-radius: 8px;
  font-size: .9rem;
}

/* 統計卡 */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 14px 0;
}
@media (max-width: 600px) { .stat-grid { grid-template-columns: 1fr; } }
.stat-card {
  background: linear-gradient(135deg, #fff, var(--gray-50));
  border: 1px solid var(--gray-100);
  border-radius: 12px;
  padding: 18px 12px;
  text-align: center;
}
.stat-card.hl {
  background: linear-gradient(135deg, var(--accent), #e58e3e);
  color: #fff;
  border: none;
}
.stat-num {
  font-size: clamp(1.5rem, 5vw, 2rem);
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}
.stat-card.hl .stat-num { color: #fff; }
.stat-lbl { font-size: .85rem; color: var(--gray-600); margin-top: 4px; }
.stat-card.hl .stat-lbl { color: rgba(255,255,255,.95); }

.chart-wrap {
  position: relative;
  height: 320px;
  margin: 14px 0;
  background: #fff;
  border-radius: 10px;
  padding: 10px;
}

/* CTA */
.cta {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #fff;
  text-align: center;
  padding: 50px 20px;
  margin-top: 40px;
}
.cta h2 { font-size: 1.6rem; margin-bottom: 8px; }
.cta p { opacity: .9; margin-bottom: 22px; }
.cta-btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 12px 24px;
  border-radius: 30px;
  text-decoration: none;
  font-weight: 700;
  margin: 6px;
  transition: transform .2s;
  box-shadow: 0 4px 12px rgba(0,0,0,.2);
}
.cta-btn:hover { transform: translateY(-2px); }
.cta-btn.ghost {
  background: transparent;
  border: 2px solid #fff;
}
.ver { text-align: center; padding: 20px; color: var(--gray-600); font-size: .8rem; }

/* 手機調整 */
@media (max-width: 480px) {
  .tabs { padding: 0 8px; gap: 4px; }
  .tab { padding: 10px 4px; }
  main { padding: 10px; }
  .org-block { padding: 18px 16px; }
  .card { padding: 18px 16px; }
}