:root {
  color-scheme: light;
  --color-primary: #2a483a;          /* 日系深鼠尾草綠 · 內斂低調自然 */
  --color-primary-hover: #1f362b;
  --color-primary-dark: #1f2120;     /* 極簡深石墨黑 */
  --color-primary-light: #edf3ee;    /* 淡鼠尾草微綠淺底 */
  --color-cta: #1f2120;              /* 極簡深石墨黑按鈕 · 無印現代有機高階感 */
  --color-cta-hover: #2a483a;        /* Hover 轉深鼠尾草綠 */
  --color-cta-light: #f7f7f5;
  --color-price: #1f2120;            /* 素樸深石墨黑售價 · 純淨克制 */
  --color-footer-bg: #f4f3f0;        /* 日系柔和微暖灰頁尾 · 舒服素雅 */
  --color-footer-text: #242624;      /* 深石墨黑文字 */
  --color-footer-sub: #5e615d;      /* 柔和次要文字 */
  --color-footer-border: #e2e0db;
  --color-bg-needs: #f7f7f5;         /* 需求探索微暖灰底 */
  --color-text-main: #1f2120;        /* 主標題深石墨黑 */
  --color-text-muted: #5e615d;       /* 溫潤次要灰 */
  --color-text-light: #8c8e8a;
  --color-border: #ebeae6;           /* 日系極細微灰線 */
  --color-border-light: #f4f3f0;
  --color-card-bg: #ffffff;
  --color-bg-page: #ffffff;          /* 大面積極簡純白 */
  --color-bg-alt: #f9f9f8;
  --color-bg-subtle: #f7f7f5;
  --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 24px rgba(0, 0, 0, 0.07);
  --radius-sm: 4px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-pill: 9999px;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: Georgia, "Noto Serif SC", "Source Han Serif SC", serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  color: var(--color-text-main);
  background-color: var(--color-bg-page);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; transition: all 0.2s ease; }
a:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

.shell {
  width: min(100% - 48px, 1280px);
  margin-inline: auto;
}

/* ==========================================================================
   1. 頂部 Announcement Bar (日系素雅微暖灰)
   ========================================================================== */
.top-bar {
  background-color: var(--color-bg-subtle);
  color: var(--color-text-main);
  font-size: 13px;
  padding: 8px 0;
  text-align: center;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--color-border);
}
.top-bar-inner {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.top-bar-badge {
  display: inline-block;
  padding: 2px 8px;
  background: var(--color-primary-light);
  border: 1px solid #d0ded4;
  border-radius: var(--radius-pill);
  color: var(--color-primary);
  font-size: 11px;
  font-weight: 600;
}

/* ==========================================================================
   2. 頂端導覽 Sticky Header
   ========================================================================== */
.site-header {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: background 0.3s ease;
}
.site-header .shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 80px;
  gap: 24px;
}
.brand-group {
  display: flex;
  flex-direction: column;
  text-decoration: none;
}
.brand-logo {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 700;
  color: var(--color-text-main);
  line-height: 1.1;
  display: flex;
  align-items: baseline;
  gap: 6px;
}
.brand-logo .logo-en {
  font-size: 15px;
  font-weight: 400;
  letter-spacing: 1px;
  color: var(--color-primary);
  text-transform: uppercase;
}
.brand-sub {
  font-size: 11px;
  letter-spacing: 1.5px;
  color: var(--color-text-muted);
  text-transform: uppercase;
  font-weight: 500;
  margin-top: 2px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.site-nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-main);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  position: relative;
}
.site-nav a::after {
  content: "";
  position: absolute;
  bottom: 8px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width 0.25s ease;
}
.site-nav a:hover,
.site-nav a.active {
  color: var(--color-primary);
}
.site-nav a:hover::after,
.site-nav a.active::after {
  width: 100%;
}
.nav-badge-pill {
  font-size: 11px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  padding: 1px 7px;
  border-radius: var(--radius-pill);
  margin-left: 6px;
  font-weight: 600;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}
.cart-btn-indicator {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-main);
  min-height: 44px;
  transition: all 0.2s ease;
}
.cart-btn-indicator:hover {
  background: #ebeae6;
  border-color: var(--color-text-main);
}
.cart-count-badge {
  background: var(--color-primary);
  color: #fff;
  font-size: 12px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: inline-grid;
  place-items: center;
}

/* ==========================================================================
   3. 內頁主版面與 Header Banner
   ========================================================================== */
.page-container {
  padding: 40px 0 88px;
  background: #ffffff;
}

.collection-hero {
  background: var(--color-bg-subtle);
  border-bottom: 1px solid var(--color-border);
  padding: 44px 0 36px;
  margin-bottom: 40px;
}
.collection-hero-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 32px;
}
.collection-hero-text h1 {
  font-family: var(--font-serif);
  font-size: clamp(28px, 3.5vw, 36px);
  color: var(--color-text-main);
  font-weight: 600;
  margin-bottom: 12px;
  line-height: 1.25;
}
.collection-hero-text p {
  font-size: 15px;
  color: var(--color-text-muted);
  max-width: 640px;
  line-height: 1.7;
}
.collection-expert-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #ffffff;
  border: 1px solid var(--color-border);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  color: var(--color-primary);
  font-weight: 500;
  margin-top: 16px;
  box-shadow: var(--shadow-sm);
}

.category-filter-nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 24px;
}
.filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--color-border);
  background: #ffffff;
  color: var(--color-text-main);
  min-height: 40px;
  transition: all 0.2s ease;
}
.filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
}
.filter-btn.active {
  background: var(--color-cta);
  color: #ffffff;
  border-color: var(--color-cta);
}

/* 政策/一般頁面 Header */
.page-header {
  margin-bottom: 36px;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 24px;
}
.page-header h1 {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 600;
  color: var(--color-text-main);
}
.page-header .subtitle {
  color: var(--color-text-muted);
  font-size: 15px;
  line-height: 1.6;
}

/* ==========================================================================
   4. 商品清單 Grid (collections/nutrition.html)
   ========================================================================== */
.product-count-bar, .product-count {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
  font-size: 14px;
  color: var(--color-text-muted);
}
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px 22px;
}
.product,
.product-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  position: relative;
}
.product:hover,
.product-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: #d0ded4;
}
.product-link {
  display: block;
  text-decoration: none;
  color: inherit;
}
.product-image,
.product-image-box {
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  padding: 12px;
  border-radius: var(--radius-sm);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  transition: background 0.2s ease;
  margin-bottom: 14px;
  overflow: hidden;
}
.product:hover .product-image,
.product-card:hover .product-image-box {
  background: #ffffff;
}
.product-image img,
.product-image-box img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.3s ease;
}
.product:hover .product-image img,
.product-card:hover .product-image-box img {
  transform: scale(1.03);
}
.sku-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  color: var(--color-text-muted);
  background: var(--color-bg-subtle);
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  margin-bottom: 8px;
  width: fit-content;
}
.product h3,
.product-title {
  min-height: 44px;
  margin: 0 0 6px;
  font-size: 15px;
  line-height: 1.45;
  font-weight: 600;
  color: var(--color-text-main);
}
.product:hover h3,
.product-card:hover .product-title {
  color: var(--color-primary);
}
.product .detail,
.product-detail-text {
  min-height: 38px;
  margin: 0 0 14px;
  color: var(--color-text-muted);
  font-size: 13px;
  line-height: 1.55;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.product-bottom-row {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.product .price,
.price-tag {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-price);          /* 素樸深石墨黑售價 */
  font-variant-numeric: tabular-nums;
  font-family: var(--font-sans);
}
.card-cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  background: var(--color-cta);       /* 極簡深石墨黑按鈕 */
  color: #ffffff;
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--radius-pill);
  min-height: 38px;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.card-cta-btn:hover {
  background: var(--color-cta-hover);
}

/* ==========================================================================
   5. 政策與文章內容區塊 (.page-content)
   ========================================================================== */
.page-content {
  font-size: 15px;
  color: var(--color-text-main);
  line-height: 1.8;
}
.page-content h2 {
  margin: 40px 0 16px;
  font-size: 21px;
  color: var(--color-text-main);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 8px;
  font-weight: 600;
}
.page-content h3 {
  margin: 28px 0 12px;
  font-size: 17px;
  color: var(--color-primary);
  font-weight: 600;
}
.page-content p {
  margin: 0 0 16px;
}
.page-content ul, .page-content ol {
  margin: 0 0 20px 24px;
  padding: 0;
}
.page-content li {
  margin-bottom: 10px;
}
.page-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  display: block;
  margin: 24px auto;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

/* 卡片排版 */
.policy-card {
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 24px;
}
.policy-card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-main);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 常見問題 FAQ 卡片 */
.qa-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}
.qa-card:hover {
  border-color: #cbd5e1;
}
.qa-q {
  font-weight: 600;
  color: var(--color-text-main);
  margin: 0 0 10px;
  font-size: 16px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.qa-q-badge {
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  background: var(--color-primary);
  color: #ffffff;
  font-size: 11px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 2px;
}
.qa-a {
  color: var(--color-text-muted);
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  padding-left: 32px;
}

/* 聯絡我們資訊卡 */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-top: 24px;
}
.contact-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}
.contact-card h2 {
  margin: 0 0 18px;
  font-size: 18px;
  color: var(--color-text-main);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 10px;
}
.contact-item {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  align-items: baseline;
}
.contact-label {
  font-weight: 600;
  color: var(--color-primary);
  min-width: 86px;
  font-size: 14px;
}
.contact-value {
  color: var(--color-text-main);
  font-size: 14px;
  line-height: 1.6;
}

/* ==========================================================================
   6. 4 欄日系柔和微暖灰頁尾 Site Footer
   ========================================================================== */
.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: 68px 0 28px;
  border-top: 1px solid var(--color-footer-border);
  margin-top: auto;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-footer-text);
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}
.footer-col ul li {
  margin-bottom: 12px;
}
.footer-col ul a {
  color: var(--color-footer-sub);
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  min-height: 36px;
}
.footer-col ul a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}
.footer-brand-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-footer-text);
  margin-bottom: 12px;
}
.footer-desc {
  font-size: 14px;
  color: var(--color-footer-sub);
  line-height: 1.7;
  margin-bottom: 20px;
}
.footer-contact-info p {
  font-size: 14px;
  color: var(--color-footer-sub);
  line-height: 1.8;
  margin-bottom: 6px;
}
.footer-contact-info strong {
  color: var(--color-footer-text);
}
.footer-compliance-box {
  background: #ffffff;
  border: 1px solid var(--color-footer-border);
  border-radius: var(--radius-sm);
  padding: 16px;
  font-size: 12px;
  color: var(--color-footer-sub);
  line-height: 1.6;
}

.footer-bottom {
  border-top: 1px solid var(--color-footer-border);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: var(--color-footer-sub);
}
.payment-badges {
  display: flex;
  gap: 10px;
  align-items: center;
  font-size: 12px;
  flex-wrap: wrap;
}
.payment-badge-pill {
  background: #ffffff;
  border: 1px solid var(--color-footer-border);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  color: var(--color-footer-text);
  font-weight: 500;
}

/* ==========================================================================
   7. 響應式斷點與可及性
   ========================================================================== */
@media (max-width: 1080px) {
  .product-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .site-header .shell {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding-block: 16px;
    gap: 14px;
  }
  .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px 12px; }
  .product-card, .product { padding: 12px; }
  .contact-grid { grid-template-columns: 1fr; }
  .page-container { padding: 24px 0 64px; }
  .collection-hero { padding: 28px 0; }
  .collection-hero-inner { flex-direction: column; align-items: flex-start; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .shell { width: min(100% - 32px, 1280px); }
  .site-nav { gap: 8px 16px; flex-wrap: wrap; }
  .brand-logo { font-size: 22px; }
  .product h3, .product-title { font-size: 14px; min-height: 40px; }
  .price-tag, .product .price { font-size: 16px; }
  .card-cta-btn { padding: 5px 10px; font-size: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
}