/* ============================
   1. Reset & Base
   ============================ */

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

:root {
  --color-primary:       #2a7c6f;
  --color-primary-dark:  #1f5f55;
  --color-primary-light: #87ceab;
  --color-secondary:     #8B6914;
  --color-bg:            #f5f0e8;
  --color-bg-alt:        #ebe5d9;
  --color-text:          #2c2c2c;
  --color-text-light:    #666;
  --color-white:         #ffffff;
  --color-border:        #d8d0c4;

  --font-serif: 'Noto Serif TC', serif;
  --font-sans:  'Noto Sans TC', sans-serif;

  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  2rem;
  --space-lg:  4rem;
  --space-xl:  6rem;

  --max-width: 1200px;
  --container-padding: 1.5rem;

  --radius-sm: 4px;
  --radius-md: 10px;
  --radius-lg: 20px;

  --shadow-sm: 0 2px 8px rgba(0,0,0,0.07);
  --shadow-md: 0 6px 24px rgba(0,0,0,0.11);

  --transition: 0.3s ease;

  --header-height: 70px;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-primary-dark);
}

ul {
  list-style: none;
}

/* ============================
   2. Typography
   ============================ */

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  line-height: 1.3;
  color: var(--color-text);
}

h1 { font-size: clamp(1.75rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.375rem); }

p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

/* ============================
   3. Layout Utilities
   ============================ */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section {
  padding: var(--space-xl) 0;
}

.section-light { background: var(--color-bg); }
.section-alt   { background: var(--color-bg-alt); }

.section-header {
  margin-bottom: var(--space-lg);
}

.section-label {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.section-title {
  margin-bottom: var(--space-sm);
}

.section-subtitle {
  color: var(--color-text-light);
  max-width: 600px;
}

/* Two column layout */
.two-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  align-items: center;
}

.two-col-text {
  flex: 1;
  width: 100%;
}

.two-col-image {
  flex: 1;
  width: 100%;
}

.two-col-image img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.two-col-icon-block {
  flex: 1;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
}

@media (min-width: 768px) {
  .two-col {
    flex-direction: row;
  }

  .two-col-reverse {
    flex-direction: row-reverse;
  }
}

/* ============================
   4. Components
   ============================ */

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  text-align: center;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline-white {
  background: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}

.btn-outline-white:hover {
  background: var(--color-white);
  color: var(--color-primary);
}

.btn-full {
  width: 100%;
}

/* Cards */
.cards-grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

@media (min-width: 768px) {
  .cards-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .cards-grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.card-image {
  position: relative;
  overflow: hidden;
  height: 220px;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.card:hover .card-image img {
  transform: scale(1.04);
}

.card-body {
  padding: var(--space-md);
}

.card-title {
  margin-bottom: var(--space-xs);
}

.card-text {
  color: var(--color-text-light);
  font-size: 0.9rem;
  margin-bottom: var(--space-sm);
}

.card-list {
  font-size: 0.85rem;
  color: var(--color-text-light);
  padding-left: 0;
}

.card-list li {
  padding: 0.2rem 0;
  padding-left: 1rem;
  position: relative;
}

.card-list li::before {
  content: '·';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}

.card-tag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  letter-spacing: 0.05em;
}

.card-link {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-primary);
}

.card-link:hover {
  color: var(--color-primary-dark);
}

/* About badges */
.about-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.4rem 1rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
}

.badge-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.badge-icon svg {
  width: 100%;
  height: 100%;
  stroke: var(--color-primary);
}

/* Feature list */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin: var(--space-md) 0;
}

.feature-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.feature-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-primary);
  flex-shrink: 0;
  margin-top: 0.55rem;
}

.feature-item strong {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--color-text);
}

.feature-item p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin: 0;
}

/* Icon feature (large decorative icon) */
.icon-feature {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: var(--color-bg-alt);
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2.5rem;
}

.icon-feature svg {
  width: 100%;
  height: 100%;
  stroke: var(--color-primary);
}

/* Kreidezeit intro */
.kreidezeit-intro {
  max-width: 860px;
  margin: 0 0 var(--space-xl);
}

.kreidezeit-intro p {
  color: var(--color-text-light);
  line-height: 1.85;
}

.kreidezeit-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  gap: 0.5rem;
  margin-top: var(--space-md);
}

.kreidezeit-tags span {
  background: var(--color-white);
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.3rem 0.9rem;
  border-radius: 999px;
  letter-spacing: 0.05em;
}

/* ============================
   Paint Categories (stacked)
   ============================ */

.paint-category {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-border);
}

.paint-category:last-of-type {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.paint-category-header {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

@media (min-width: 768px) {
  .paint-category-header {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--space-lg);
  }

  .paint-category--reverse .paint-category-header {
    flex-direction: row-reverse;
  }
}

.paint-category-img {
  flex: 0 0 300px;
}

.paint-category-img img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

@media (min-width: 768px) {
  .paint-category-img img {
    height: 320px;
  }
}

.paint-category-info {
  flex: 1;
  min-width: 0;
}

.paint-category-info h3 {
  margin: 0 0 var(--space-sm);
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  font-weight: 700;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

.paint-category-overview {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.85;
  margin-bottom: var(--space-md);
}

.paint-feature-list {
  padding-left: 0;
  margin: 0;
}

.paint-feature-list li {
  font-size: 0.9rem;
  color: var(--color-text-light);
  padding: 0.3rem 0 0.3rem 1.2rem;
  position: relative;
  line-height: 1.65;
}

.paint-feature-list li::before {
  content: '·';
  position: absolute;
  left: 0.3rem;
  color: var(--color-primary);
  font-weight: 700;
}

/* Product accordion inside tabs */
.product-accordion details {
  border-bottom: 1px solid var(--color-border);
}

.product-accordion details:last-child {
  border-bottom: none;
}

.product-accordion summary {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 0;
  cursor: pointer;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-text);
  list-style: none;
  position: relative;
  padding-right: 2rem;
  transition: color var(--transition);
}

.product-accordion summary::-webkit-details-marker { display: none; }

.product-accordion summary span {
  font-weight: 400;
  color: var(--color-text-light);
  font-size: 0.8rem;
}

.product-accordion summary::after {
  content: '+';
  position: absolute;
  right: 0;
  font-size: 1.2rem;
  color: var(--color-primary);
  transition: transform var(--transition);
}

.product-accordion details[open] summary::after {
  transform: rotate(45deg);
}

.product-accordion details[open] summary {
  color: var(--color-primary);
}

.product-detail {
  padding: 0 0 var(--space-sm) 0;
}

.product-detail p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 0.75rem;
}

.product-detail ul {
  padding-left: 0;
  margin: 0;
}

.product-detail ul li {
  font-size: 0.87rem;
  color: var(--color-text-light);
  padding: 0.2rem 0 0.2rem 1.2rem;
  position: relative;
  line-height: 1.6;
}

.product-detail ul li::before {
  content: '·';
  position: absolute;
  left: 0.3rem;
  color: var(--color-primary);
  font-weight: 700;
}

/* Product Carousel (inside accordion) */
.product-carousel {
  position: relative;
  margin-top: var(--space-md);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.carousel-track-wrap {
  overflow: hidden;
}

.carousel-track {
  display: flex;
  transition: transform 0.4s ease;
}

.carousel-slide {
  display: flex;
  flex-direction: column;
  min-width: 100%;
  background: var(--color-bg);
}

@media (min-width: 560px) {
  .carousel-slide {
    flex-direction: row;
    min-height: 220px;
  }
}

.carousel-slide img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  flex-shrink: 0;
}

@media (min-width: 560px) {
  .carousel-slide img {
    width: 52%;
    height: auto;
  }
}

.carousel-caption {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 1.5rem;
  flex: 1;
}

.carousel-caption h5 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--color-primary);
  margin-bottom: 0.6rem;
}

.carousel-caption p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
  margin: 0;
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  background: rgba(255,255,255,0.85);
  border: none;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  transition: background var(--transition);
}

.carousel-btn:hover {
  background: var(--color-white);
}

.carousel-prev { left: 0.5rem; }
.carousel-next { right: 0.5rem; }

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 0;
  background: var(--color-bg);
}

.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  background: var(--color-border);
  cursor: pointer;
  padding: 0;
  transition: background var(--transition), transform var(--transition);
}

.carousel-dot.is-active {
  background: var(--color-primary);
  transform: scale(1.3);
}

/* Single product image (no carousel) */
.paint-single-img {
  margin-top: var(--space-md);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.paint-single-img img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  display: block;
}

.paint-single-img p {
  background: var(--color-bg);
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-light);
  padding: 0.6rem 1rem;
  margin: 0;
}

/* Paint showcase */
.paint-showcase {
  margin-top: var(--space-xl);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  min-height: 400px;
  display: flex;
  align-items: flex-end;
}

.paint-showcase img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.paint-showcase-text {
  position: relative;
  z-index: 1;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 100%);
  width: 100%;
  padding: var(--space-lg) var(--space-md) var(--space-md);
  color: var(--color-white);
}

.paint-showcase-text h3 {
  color: var(--color-white);
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.paint-showcase-text p {
  font-size: 0.95rem;
  opacity: 0.9;
  max-width: 600px;
}

/* FAQ */
.faq-list {
  max-width: 780px;
  margin: 0 auto;
}

.faq-category {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin: var(--space-md) 0 0.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-primary-light);
}

.faq-category:first-child {
  margin-top: 0;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 0;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--color-primary);
  flex-shrink: 0;
  position: relative;
  transition: transform var(--transition), background var(--transition);
}

.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--color-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

.faq-icon::before {
  width: 10px;
  height: 2px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.faq-icon::after {
  width: 2px;
  height: 10px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

details[open] .faq-icon {
  background: var(--color-primary);
}

details[open] .faq-icon::before,
details[open] .faq-icon::after {
  background: var(--color-white);
}

details[open] .faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.faq-answer {
  padding: 0 0 1.25rem;
  color: var(--color-text-light);
  font-size: 0.95rem;
  animation: faq-open 0.25s ease;
}

@keyframes faq-open {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

@media (min-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.contact-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.contact-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-icon svg {
  width: 100%;
  height: 100%;
  stroke: var(--color-primary);
}

.contact-item strong {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: 0.2rem;
}

.contact-item p,
.contact-item a {
  font-size: 0.95rem;
  color: var(--color-text);
}

/* Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  background: var(--color-white);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.65rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(42,124,111,0.15);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* ============================
   5. Header & Navigation
   ============================ */

#header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  transition: background var(--transition), box-shadow var(--transition);
}

#header.scrolled {
  background: rgba(245,240,232,0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 2px 16px rgba(0,0,0,0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Logo */
.logo {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  text-decoration: none;
}

.logo-en {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.08em;
  transition: color var(--transition);
}

.logo-zh {
  font-size: 0.7rem;
  color: var(--color-text-light);
  letter-spacing: 0.05em;
  transition: color var(--transition);
}

/* On hero (transparent header), use white */
#header:not(.scrolled) .logo-en {
  color: var(--color-white);
}
#header:not(.scrolled) .logo-zh {
  color: rgba(255,255,255,0.8);
}

/* Desktop nav */
.nav-list {
  display: none;
  gap: 0.25rem;
  align-items: center;
}

@media (min-width: 1024px) {
  .nav-list {
    display: flex;
  }
}

.nav-link {
  padding: 0.4rem 0.75rem;
  font-size: 0.88rem;
  font-weight: 400;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
  background: rgba(42,124,111,0.08);
}

.nav-cta {
  background: var(--color-primary);
  color: var(--color-white) !important;
  font-weight: 700;
  padding: 0.4rem 1rem;
}

.nav-cta:hover {
  background: var(--color-primary-dark) !important;
  color: var(--color-white) !important;
}

/* On transparent header, nav links are white */
#header:not(.scrolled) .nav-link:not(.nav-cta) {
  color: rgba(255,255,255,0.9);
}

#header:not(.scrolled) .nav-link:not(.nav-cta):hover {
  color: var(--color-white);
  background: rgba(255,255,255,0.15);
}

/* Hamburger */
.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 200;
}

@media (min-width: 1024px) {
  .hamburger {
    display: none;
  }
}

.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
  transform-origin: center;
}

#header:not(.scrolled) .hamburger span {
  background: var(--color-white);
}

body.nav-open .hamburger span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
  background: var(--color-text) !important;
}

body.nav-open .hamburger span:nth-child(2) {
  opacity: 0;
}

body.nav-open .hamburger span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
  background: var(--color-text) !important;
}

/* Mobile Nav Overlay */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  z-index: 150;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

body.nav-open .nav-overlay {
  opacity: 1;
  pointer-events: auto;
}

.nav-overlay-list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  text-align: center;
}

.nav-overlay-link {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  color: var(--color-text);
  font-weight: 700;
  transition: color var(--transition);
}

.nav-overlay-link:hover {
  color: var(--color-primary);
}

/* ============================
   6. Hero
   ============================ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  transform: scale(1.05);
  transition: transform 8s ease;
}

.hero.loaded .hero-bg {
  transform: scale(1);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,0.25) 0%, rgba(0,0,0,0.1) 100%);
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--color-white);
  padding: var(--space-md);
  max-width: 800px;
}

.hero-sub {
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.85;
  margin-bottom: 1rem;
}

.hero-title {
  color: var(--color-white);
  font-size: clamp(1.75rem, 5vw, 3.5rem);
  margin-bottom: var(--space-sm);
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.hero-desc {
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  opacity: 0.9;
  margin-bottom: var(--space-md);
  line-height: 1.8;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.7);
  animation: bounce 2s infinite;
  z-index: 1;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

/* ============================
   7. Gallery
   ============================ */

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

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

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

.gallery-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 1;
  position: relative;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.gallery-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(42,124,111,0);
  transition: background var(--transition);
}

.gallery-item:hover::after {
  background: rgba(42,124,111,0.15);
}

.gallery-item:hover img {
  transform: scale(1.06);
}

/* ============================
   8. Footer
   ============================ */

.footer {
  background: #1a2e2a;
  color: rgba(255,255,255,0.8);
  padding: var(--space-lg) 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  padding-bottom: var(--space-lg);
}

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

.footer-logo-en {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary-light);
  letter-spacing: 0.1em;
  margin-bottom: 0.25rem;
}

.footer-logo-zh {
  display: block;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.footer-slogan {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  margin: 0;
}

.footer-links h4,
.footer-contact h4 {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.5);
  margin-bottom: 1rem;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-links a {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.75);
}

.footer-links a:hover {
  color: var(--color-primary-light);
}

.footer-contact p,
.footer-contact a {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.75);
  margin-bottom: 0.5rem;
}

.footer-contact a:hover {
  color: var(--color-primary-light);
}

.footer-social {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.7);
  transition: all var(--transition);
}

.footer-social a svg {
  width: 16px;
  height: 16px;
}

.footer-social a:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 1.5rem 0;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.35);
}

/* ============================
   9. Mobile Contact Bar
   ============================ */

.mobile-contact-bar {
  display: none;
}

@media (max-width: 767px) {
  .mobile-contact-bar {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 200;
    background: #fff;
    border-top: 1px solid var(--color-border);
    box-shadow: 0 -2px 12px rgba(0,0,0,0.08);
    padding-bottom: env(safe-area-inset-bottom);
  }

  .mobile-contact-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    padding: 0.65rem 0;
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    transition: color 0.2s, background 0.2s;
  }

  .mobile-contact-btn:not(:last-child) {
    border-right: 1px solid var(--color-border);
  }

  .mobile-contact-btn svg {
    width: 22px;
    height: 22px;
    color: var(--color-primary);
  }

  .mobile-contact-btn:hover,
  .mobile-contact-btn:active {
    background: var(--color-bg-alt);
    color: var(--color-primary);
  }

  /* 讓頁尾底部不被 bar 遮住 */
  body {
    padding-bottom: 60px;
  }
}

/* ============================
   10. Lightbox
   ============================ */

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.92);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: lightbox-in 0.25s ease;
}

.lightbox[hidden] {
  display: none;
}

@keyframes lightbox-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.lightbox-img-wrap {
  max-width: 90vw;
  max-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-img {
  max-width: 90vw;
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--radius-sm);
}

.lightbox-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: var(--color-white);
  font-size: 2.5rem;
  cursor: pointer;
  line-height: 1;
  opacity: 0.7;
  transition: opacity var(--transition);
  padding: 0.25rem;
}

.lightbox-close:hover { opacity: 1; }

.lightbox-prev,
.lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  color: var(--color-white);
  font-size: 1.5rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  cursor: pointer;
  transition: background var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-prev { left: 1.5rem; }
.lightbox-next { right: 1.5rem; }

.lightbox-prev:hover,
.lightbox-next:hover {
  background: rgba(255,255,255,0.2);
}

/* ============================
   10. Animations
   ============================ */

[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate="fade-left"] {
  transform: translateX(24px);
}

[data-animate="fade-right"] {
  transform: translateX(-24px);
}

[data-animate].visible {
  opacity: 1;
  transform: translate(0);
}

/* Body scroll lock when nav is open */
body.nav-open {
  overflow: hidden;
}