html { scroll-behavior: smooth; scroll-padding-top: var(--header-height); }
body {
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
}
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}
section { padding-block: var(--space-20); }
@media (max-width: 768px) {
  section { padding-block: var(--space-12); }
}
.eyebrow {
  font-size: var(--fs-xs);
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-secondary);
  margin-bottom: var(--space-3);
}
h1, h2, h3 { color: var(--color-text); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.25rem); margin-bottom: var(--space-4); }
h3 { font-size: var(--fs-lg); margin-bottom: var(--space-2); }
p { color: var(--color-text-soft); }
a:hover { color: var(--color-accent); }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-8);
  background: var(--color-accent);
  color: var(--color-white);
  font-weight: 600;
  border-radius: var(--radius-pill);
  transition: background var(--duration-fast) var(--ease-out), transform var(--duration-fast) var(--ease-out);
  min-height: 44px;
}
.btn:hover { background: var(--color-accent-hover); transform: translateY(-1px); color: var(--color-white); }
.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-text);
}
.btn-secondary:hover { background: var(--color-text); color: var(--color-bg); }
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-text);
  color: var(--color-bg);
  padding: var(--space-2) var(--space-4);
  z-index: 9999;
}
.skip-link:focus { top: 0; }

/* ===== Site Header ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(251, 246, 238, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration-fast) var(--ease-out), background var(--duration-fast) var(--ease-out);
}
.site-header.scrolled {
  border-bottom-color: var(--color-border);
  background: rgba(251, 246, 238, 0.95);
}
.site-header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: var(--space-2); font-weight: 700; font-size: var(--fs-md); color: var(--color-text); }
.brand-mark { font-size: 1.5rem; }
.nav-menu {
  display: flex;
  gap: var(--space-8);
  align-items: center;
}
.nav-menu a {
  font-size: var(--fs-sm);
  font-weight: 500;
  position: relative;
  padding: var(--space-2) 0;
}
.nav-menu a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-fast) var(--ease-out);
}
.nav-menu a:hover::after, .nav-menu a.active::after { transform: scaleX(1); }

/* Body padding for fixed header */
body { padding-top: var(--header-height); }

/* Hamburger */
.nav-toggle { display: none; padding: var(--space-2); width: 44px; height: 44px; flex-direction: column; gap: 5px; align-items: center; justify-content: center; }
.nav-toggle-bar { display: block; width: 24px; height: 2px; background: var(--color-text); transition: transform var(--duration-fast) var(--ease-out), opacity var(--duration-fast) var(--ease-out); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed;
    top: var(--header-height); left: 0; right: 0;
    background: var(--color-bg);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-8) var(--container-padding);
    gap: var(--space-2);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--duration-base) var(--ease-out), opacity var(--duration-base) var(--ease-out);
  }
  .nav-menu.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-menu a { display: block; padding: var(--space-3) 0; font-size: var(--fs-md); }
}

/* ===== Footer ===== */
.site-footer {
  background: var(--color-text);
  color: var(--color-bg);
  padding-block: var(--space-16) var(--space-8);
  margin-top: var(--space-24);
}
.site-footer-inner { display: grid; gap: var(--space-12); }
.site-footer h4 { font-size: var(--fs-sm); letter-spacing: 2px; text-transform: uppercase; color: var(--color-accent); margin-bottom: var(--space-3); }
.site-footer ul { display: grid; gap: var(--space-2); }
.site-footer a { color: var(--color-bg); opacity: 0.85; }
.site-footer a:hover { color: var(--color-accent); opacity: 1; }
.footer-tagline { color: var(--color-border); margin-top: var(--space-2); font-size: var(--fs-sm); }
.footer-cols { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-12); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-8);
  margin-top: var(--space-8);
  border-top: 1px solid rgba(232, 220, 196, 0.15);
  font-size: var(--fs-sm);
  opacity: 0.8;
}
.btn-back-to-top {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-white);
  font-size: var(--fs-md);
  transition: transform var(--duration-fast) var(--ease-out);
}
.btn-back-to-top:hover { transform: translateY(-2px); }

@media (min-width: 768px) {
  .site-footer-inner { grid-template-columns: 1fr 2fr; }
  .footer-cols { grid-template-columns: 1fr 1fr; }
}

/* ===== Hero ===== */
.hero {
  padding-block: var(--space-16) var(--space-24);
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-surface) 100%);
  position: relative;
  overflow: hidden;
}
.hero-inner {
  display: grid;
  gap: var(--space-12);
  align-items: center;
}
.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: var(--space-6);
}
.hero-accent {
  background: linear-gradient(120deg, var(--color-accent) 0%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-lead { font-size: var(--fs-md); margin-bottom: var(--space-8); max-width: 32ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-4); }

.hero-visual { position: relative; min-height: 320px; }
.hero-img-wrap {
  aspect-ratio: 1;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 2;
}
.hero-img-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-secondary);
}
.hero-img-placeholder span { font-size: clamp(4rem, 12vw, 8rem); }
.hero-img-placeholder small { font-size: var(--fs-xs); letter-spacing: 2px; }
.hero-decor {
  position: absolute;
  border-radius: 50%;
  z-index: 1;
}
.hero-decor-1 {
  width: 180px; height: 180px;
  background: radial-gradient(circle, var(--color-accent) 0%, transparent 70%);
  opacity: 0.4;
  top: -40px; right: -40px;
  animation: float 8s ease-in-out infinite;
}
.hero-decor-2 {
  width: 120px; height: 120px;
  background: radial-gradient(circle, var(--color-secondary) 0%, transparent 70%);
  opacity: 0.3;
  bottom: 0; left: -20px;
  animation: float 10s ease-in-out infinite reverse;
}
@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(20px, -20px); }
}

@media (min-width: 1024px) {
  .hero-inner { grid-template-columns: 1.1fr 1fr; gap: var(--space-16); }
}

/* ===== Story ===== */
.story { background: var(--color-bg); }
.story-inner { display: grid; gap: var(--space-12); align-items: center; }
.story-content p { margin-bottom: var(--space-4); max-width: 56ch; line-height: 1.8; }
.btn-text {
  display: inline-block;
  margin-top: var(--space-4);
  font-weight: 600;
  color: var(--color-accent);
  border-bottom: 1.5px solid var(--color-accent);
  padding-bottom: 2px;
  transition: color var(--duration-fast) var(--ease-out), gap var(--duration-fast) var(--ease-out);
}
.btn-text:hover { color: var(--color-secondary); }

.story-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}
.stat {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: transform var(--duration-base) var(--ease-out), box-shadow var(--duration-base) var(--ease-out);
}
.stat:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.stat-num {
  font-family: var(--font-num);
  font-size: var(--fs-3xl);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-2);
}
.stat-label {
  font-size: var(--fs-sm);
  color: var(--color-text-soft);
  letter-spacing: 1px;
}
.stat-image {
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}
.stat-img-placeholder { font-size: 4rem; }

@media (min-width: 1024px) {
  .story-inner { grid-template-columns: 1fr 1fr; gap: var(--space-16); }
  .story-stats { grid-template-columns: 1fr 1fr; }
}

/* ===== Products ===== */
.section-head { text-align: center; max-width: 60ch; margin: 0 auto var(--space-12); }
.section-lead { font-size: var(--fs-md); color: var(--color-text-soft); }

.product-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}
@media (min-width: 768px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-8); }
}
@media (min-width: 1024px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .product-card-feature { grid-column: span 1; }
}

.product-card {
  display: block;
  background: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--duration-base) var(--ease-out), box-shadow var(--duration-base) var(--ease-out);
  color: var(--color-text);
}
@media (hover: hover) {
  .product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    color: var(--color-text);
  }
  .product-card:hover .product-img span { transform: scale(1.08); }
}
.product-img {
  aspect-ratio: 4 / 3;
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.product-img span {
  font-size: clamp(3rem, 8vw, 5rem);
  transition: transform var(--duration-slow) var(--ease-out);
}
.product-body { padding: var(--space-6); }
.product-tag {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--color-accent);
  background: var(--color-surface);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-3);
}
.product-card h3 {
  font-size: var(--fs-md);
  margin-bottom: var(--space-2);
  line-height: 1.4;
}
.product-desc {
  font-size: var(--fs-sm);
  color: var(--color-text-soft);
  margin-bottom: var(--space-4);
}
.product-price {
  font-family: var(--font-num);
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--color-secondary);
}
.product-card-feature .product-img { aspect-ratio: 4 / 3; background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-secondary) 100%); }
.product-card-feature .product-img span { color: var(--color-white); }

/* ===== Order Steps ===== */
.order { background: var(--color-surface); }
.order-steps {
  display: grid;
  gap: var(--space-6);
  counter-reset: step;
}
.order-step {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: transform var(--duration-base) var(--ease-out);
}
.order-step:hover { transform: translateY(-4px); }
.order-step-num {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-white);
  font-family: var(--font-num);
  font-size: var(--fs-lg);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
}
.order-step h3 { font-size: var(--fs-md); margin-bottom: var(--space-2); }
.order-step p { color: var(--color-text-soft); font-size: var(--fs-sm); line-height: 1.7; }

@media (min-width: 768px) {
  .order-steps { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .order-steps { grid-template-columns: repeat(4, 1fr); }
}

/* ===== Promo ===== */
.promo-grid {
  display: grid;
  gap: var(--space-6);
}
.promo-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  text-align: center;
  border: 1px solid var(--color-border);
  transition: transform var(--duration-base) var(--ease-out), border-color var(--duration-base) var(--ease-out);
}
.promo-card:hover { transform: translateY(-4px); border-color: var(--color-accent); }
.promo-icon { font-size: 3rem; margin-bottom: var(--space-4); }
.promo-card h3 { color: var(--color-secondary); margin-bottom: var(--space-3); }
.promo-card-feature {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-secondary) 100%);
  color: var(--color-white);
  border-color: transparent;
}
.promo-card-feature h3, .promo-card-feature p { color: var(--color-white); }

@media (min-width: 768px) {
  .promo-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ===== Notice ===== */
.notice { background: var(--color-surface); }
.notice-grid {
  display: grid;
  gap: var(--space-6);
}
.notice-item {
  background: var(--color-white);
  border-left: 4px solid var(--color-accent);
  padding: var(--space-6) var(--space-8);
  border-radius: var(--radius-sm);
}
.notice-item h3 {
  font-size: var(--fs-md);
  margin-bottom: var(--space-2);
  color: var(--color-text);
}
.notice-item p { color: var(--color-text-soft); line-height: 1.7; }

@media (min-width: 768px) {
  .notice-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 720px;
  margin: 0 auto;
  display: grid;
  gap: var(--space-3);
}
.faq-item {
  background: var(--color-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: border-color var(--duration-fast) var(--ease-out), box-shadow var(--duration-fast) var(--ease-out);
}
.faq-item[open] { border-color: var(--color-accent); box-shadow: var(--shadow-sm); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: var(--space-6) var(--space-8);
  font-weight: 600;
  font-size: var(--fs-base);
  color: var(--color-text);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  position: relative;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--color-accent);
  font-weight: 300;
  transition: transform var(--duration-fast) var(--ease-out);
  flex-shrink: 0;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-answer {
  padding: 0 var(--space-8) var(--space-6);
  color: var(--color-text-soft);
  line-height: 1.8;
}
.faq-item[data-animating] .faq-answer { overflow: hidden; }

/* ===== Contact ===== */
.contact-inner { display: grid; gap: var(--space-12); align-items: stretch; }
.contact-lead {
  font-size: var(--fs-md);
  color: var(--color-text-soft);
  margin-bottom: var(--space-6);
}
.contact-list { display: grid; gap: var(--space-4); margin-top: var(--space-6); }
.contact-list li {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
  padding: var(--space-4);
  background: var(--color-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: border-color var(--duration-fast) var(--ease-out);
}
.contact-list li:hover { border-color: var(--color-accent); }
.contact-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
}
.contact-label {
  font-size: var(--fs-xs);
  letter-spacing: 1px;
  color: var(--color-secondary);
  text-transform: uppercase;
  margin-bottom: var(--space-1);
}
.contact-value {
  font-family: var(--font-num);
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--color-text);
}
a.contact-value:hover { color: var(--color-accent); }
.contact-map {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  min-height: 320px;
  position: relative;
}
.contact-map iframe {
  width: 100%;
  height: 100%;
  min-height: 320px;
  border: 0;
}

@media (min-width: 1024px) {
  .contact-inner { grid-template-columns: 1fr 1fr; gap: var(--space-16); }
}

/* ===== Scroll Reveal ===== */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}
[data-reveal][data-delay="100"] { transition-delay: 0.1s; }
[data-reveal][data-delay="200"] { transition-delay: 0.2s; }
[data-reveal][data-delay="300"] { transition-delay: 0.3s; }
[data-reveal][data-delay="400"] { transition-delay: 0.4s; }

/* prefers-reduced-motion 時直接顯示 */
@media (prefers-reduced-motion: reduce) {
  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* ===== Product Detail ===== */
.product-detail { padding-top: var(--space-12); }
.product-detail-grid {
  display: grid;
  gap: var(--space-12);
}
.product-gallery {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.product-gallery span {
  font-size: clamp(6rem, 18vw, 12rem);
  transition: transform var(--duration-slow) var(--ease-out);
}
.product-gallery:hover span { transform: scale(1.05); }
.product-detail-info .eyebrow { margin-bottom: var(--space-2); }
.product-detail-info h1 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  line-height: 1.2;
  margin-bottom: var(--space-4);
}
.product-detail-price {
  font-family: var(--font-num);
  font-size: var(--fs-2xl);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--space-6);
}
.product-spec {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  margin: var(--space-6) 0;
  border: 1px solid var(--color-border);
}
.product-spec dl { display: grid; grid-template-columns: auto 1fr; gap: var(--space-3) var(--space-6); }
.product-spec dt { color: var(--color-secondary); font-size: var(--fs-sm); font-weight: 600; }
.product-spec dd { color: var(--color-text); font-size: var(--fs-sm); }
.product-detail-cta { display: flex; flex-wrap: wrap; gap: var(--space-4); margin-top: var(--space-8); }
.product-story {
  margin-top: var(--space-16);
  background: var(--color-surface);
  padding: var(--space-12);
  border-radius: var(--radius-lg);
}
.product-story h2 { margin-bottom: var(--space-4); }
.product-story p { line-height: 1.8; max-width: 60ch; }
.related-products {
  margin-top: var(--space-16);
}
.related-products .section-head { margin-bottom: var(--space-8); }
.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-sm);
  color: var(--color-secondary);
  margin-bottom: var(--space-6);
}
.back-link:hover { color: var(--color-accent); }

@media (min-width: 1024px) {
  .product-detail-grid { grid-template-columns: 1fr 1fr; align-items: start; }
}