:root {
  --color-bg: #f8f5ee;
  --color-bg-soft: #fffdf8;
  --color-navy: #0e2238;
  --color-navy-soft: #183554;
  --color-text: #102a43;
  --color-text-muted: #5f6975;
  --color-gold: #b89a5e;
  --color-gold-light: #d3b978;
  --color-gold-soft: rgba(184, 154, 94, 0.35);
  --color-card: #faf7f0;
  --color-border: rgba(14, 34, 56, 0.12);
  --paper: var(--color-bg);
  --rice: #f3efe6;
  --wood: var(--color-gold-light);
  --cedar: var(--color-gold);
  --bark: var(--color-navy);
  --moss: var(--color-gold);
  --ink: var(--color-text);
  --muted: var(--color-text-muted);
  --line: rgba(184, 154, 94, 0.35);
  --shadow: 0 24px 70px rgba(14, 34, 56, 0.16);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 16% 12%, rgba(184, 154, 94, 0.08), transparent 24%),
    linear-gradient(90deg, rgba(14, 34, 56, 0.026) 1px, transparent 1px) 0 0 / 44px 44px,
    linear-gradient(180deg, var(--color-bg-soft), var(--color-bg) 44%, var(--rice));
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
  line-height: 1.75;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea {
  font: inherit;
}

:focus-visible {
  outline: 3px solid rgba(184, 154, 94, 0.46);
  outline-offset: 4px;
}

.sr-only,
.hidden-field {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 78px;
  padding: 14px clamp(18px, 5vw, 72px);
  background: rgba(255, 253, 248, 0.88);
  border-bottom: 1px solid rgba(184, 154, 94, 0.32);
  backdrop-filter: blur(18px);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark img {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid rgba(184, 154, 94, 0.38);
  box-shadow: 0 10px 26px rgba(14, 34, 56, 0.12);
}

.brand-mark strong,
.brand-mark small {
  display: block;
  line-height: 1.25;
}

.brand-mark strong {
  font-size: 15px;
  letter-spacing: 0;
}

.brand-mark small {
  color: var(--muted);
  font-size: 11px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav a {
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
  padding: 8px 12px;
  transition: color 180ms ease, background 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--bark);
  background: rgba(184, 154, 94, 0.14);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.72);
}

.nav-toggle span:not(.sr-only) {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--cedar);
}

.section-pad {
  padding: clamp(76px, 10vw, 132px) clamp(20px, 6vw, 84px);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(330px, 1.1fr);
  align-items: center;
  gap: clamp(36px, 7vw, 96px);
  min-height: 100svh;
  padding-top: 124px;
}

.luxury-hero-bg {
  overflow: hidden;
  background:
    linear-gradient(135deg, #fffdf8 0%, #f8f5ee 45%, #f3efe6 100%);
  isolation: isolate;
}

.luxury-hero-bg::before {
  position: absolute;
  inset: -30%;
  z-index: -2;
  content: "";
  pointer-events: none;
  background:
    radial-gradient(circle at 20% 30%, rgba(184, 154, 94, 0.22), transparent 30%),
    radial-gradient(circle at 80% 20%, rgba(14, 34, 56, 0.12), transparent 28%),
    radial-gradient(circle at 50% 80%, rgba(211, 185, 120, 0.18), transparent 35%);
  animation: luxuryGlow 18s ease-in-out infinite alternate;
}

.luxury-hero-bg::after {
  position: absolute;
  inset: 0;
  z-index: -1;
  content: "";
  pointer-events: none;
  opacity: 0.52;
  background-image:
    linear-gradient(rgba(184, 154, 94, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(14, 34, 56, 0.045) 1px, transparent 1px),
    radial-gradient(circle at 18px 18px, rgba(184, 154, 94, 0.15) 1px, transparent 1.4px),
    linear-gradient(110deg, transparent 0%, rgba(14, 34, 56, 0.025) 35%, transparent 72%);
  background-size: 56px 56px, 56px 56px, 112px 112px, 180px 100%;
  animation: luxuryGridMove 28s linear infinite;
}

.luxury-hero-bg > * {
  position: relative;
  z-index: 1;
}

@keyframes luxuryGlow {
  0% {
    transform: translate3d(-2%, -1%, 0) scale(1);
  }

  50% {
    transform: translate3d(2%, 1%, 0) scale(1.04);
  }

  100% {
    transform: translate3d(1%, -2%, 0) scale(1.02);
  }
}

@keyframes luxuryGridMove {
  from {
    background-position: 0 0, 0 0, 0 0, 0 0;
  }

  to {
    background-position: 56px 56px, 56px 56px, 112px 56px, 180px 0;
  }
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--moss);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2 {
  color: var(--bark);
  font-family: "Noto Serif TC", "Songti TC", "PMingLiU", serif;
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.18;
}

h1 {
  max-width: 620px;
  margin-bottom: 22px;
  font-size: clamp(42px, 7vw, 84px);
}

h2 {
  max-width: 780px;
  margin-bottom: 18px;
  font-size: clamp(30px, 4vw, 52px);
}

h3 {
  color: var(--bark);
  font-size: 20px;
  line-height: 1.35;
}

.hero-lead,
.section-head p,
.contact-copy > p {
  max-width: 680px;
  color: var(--muted);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 700;
  padding: 12px 22px;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease, border-color 180ms ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  color: #fffdf8;
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-light));
  box-shadow: 0 16px 34px rgba(184, 154, 94, 0.28);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #aa8d53, #d9c282);
  box-shadow: 0 18px 40px rgba(184, 154, 94, 0.34);
}

.btn-secondary {
  color: var(--color-navy);
  border-color: rgba(184, 154, 94, 0.45);
  background: rgba(255, 253, 248, 0.72);
}

.btn-secondary:hover {
  border-color: var(--color-gold);
  background: rgba(250, 247, 240, 0.94);
}

.hero-carousel {
  position: relative;
  min-height: 560px;
}

.hero-carousel::before {
  position: absolute;
  inset: -20px 42px 48px -18px;
  z-index: -1;
  border: 1px solid rgba(184, 154, 94, 0.32);
  background:
    linear-gradient(135deg, rgba(184, 154, 94, 0.2), transparent 38%),
    linear-gradient(160deg, rgba(14, 34, 56, 0.08), transparent 54%),
    rgba(255, 253, 248, 0.5);
  border-radius: 36px 8px 36px 8px;
  content: "";
}

.carousel-track {
  position: relative;
  height: min(62vw, 560px);
  min-height: 460px;
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(184, 154, 94, 0.42);
  border-radius: var(--radius);
  background: var(--color-card);
  box-shadow: var(--shadow), inset 0 0 0 1px rgba(255, 253, 248, 0.55);
}

.carousel-slide {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: 0;
  transform: scale(1.018);
  transition: opacity 680ms ease, transform 680ms ease;
}

.carousel-slide.is-active {
  opacity: 1;
  transform: scale(1);
  z-index: 1;
}

.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel-controls {
  position: absolute;
  right: 5%;
  bottom: 22px;
  left: 5%;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 10px;
  border: 1px solid rgba(184, 154, 94, 0.35);
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.9);
  box-shadow: 0 14px 34px rgba(14, 34, 56, 0.12);
}

.carousel-btn {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: #fffdf8;
  color: var(--color-navy);
  cursor: pointer;
  font-size: 28px;
  line-height: 1;
  transition: transform 180ms ease, background 180ms ease;
}

.carousel-btn:hover {
  background: rgba(211, 185, 120, 0.18);
  transform: translateY(-1px);
}

.carousel-dots {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  gap: 8px;
}

.carousel-dots button {
  width: 9px;
  height: 9px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(14, 34, 56, 0.22);
  cursor: pointer;
  transition: width 180ms ease, background 180ms ease;
}

.carousel-dots button.is-active {
  width: 28px;
  border-radius: 999px;
  background: var(--color-gold);
}

.intro-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-block: 1px solid var(--line);
  background: rgba(255, 253, 248, 0.58);
}

.intro-strip div {
  min-height: 118px;
  padding: 26px clamp(20px, 5vw, 72px);
  border-right: 1px solid var(--line);
}

.intro-strip div:last-child {
  border-right: 0;
}

.intro-strip strong,
.intro-strip span {
  display: block;
}

.intro-strip strong {
  color: var(--bark);
  font-size: 20px;
}

.intro-strip span {
  color: var(--muted);
  margin-top: 4px;
}

.section {
  position: relative;
}

.muted {
  background: rgba(250, 247, 240, 0.72);
}

.section-head {
  margin-bottom: clamp(30px, 5vw, 58px);
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: clamp(24px, 5vw, 72px);
}

.about-story {
  border-left: 4px solid var(--wood);
  color: var(--muted);
  font-size: 20px;
  padding-left: 26px;
}

.about-cards {
  display: grid;
  gap: 16px;
}

.about-cards article,
.product-card,
.feature-item,
.faq-list details,
.contact-form {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(250, 247, 240, 0.78);
  box-shadow: 0 16px 42px rgba(14, 34, 56, 0.08);
}

.about-cards article {
  padding: 24px;
}

.about-cards span,
.feature-item span,
.work-type {
  color: var(--moss);
  font-size: 16px;
  font-weight: 800;
}

.about-cards p,
.product-card p,
.feature-item p,
.faq-list p {
  color: var(--muted);
  font-size: 18px;
  margin-bottom: 0;
}

.product-grid,
.feature-grid {
  display: grid;
  gap: 18px;
}

.product-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.product-card {
  overflow: hidden;
  padding: 16px;
  color: inherit;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.product-card:hover,
.feature-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 46px rgba(53, 34, 20, 0.13);
}

.image-placeholder {
  display: grid;
  place-items: center;
  min-height: 170px;
  border: 1px dashed rgba(122, 79, 42, 0.28);
  border-radius: var(--radius);
  color: var(--cedar);
  background:
    linear-gradient(135deg, rgba(199, 157, 104, 0.18), rgba(101, 116, 91, 0.08)),
    rgba(255, 255, 255, 0.48);
  font-weight: 700;
}

.product-carousel {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  overflow: hidden;
  border: 1px solid rgba(122, 79, 42, 0.16);
  border-radius: var(--radius);
  background: #fffaf2;
}

.product-carousel img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  opacity: 0;
  transform: scale(1.018);
  transition: opacity 520ms ease, transform 520ms ease;
}

.product-carousel img.is-active {
  opacity: 1;
  transform: scale(1);
}

.product-card h3 {
  margin: 18px 0 8px;
}

.process-list {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.process-list li {
  min-height: 250px;
  padding: 28px 22px;
  background: rgba(255, 252, 246, 0.82);
}

.process-icon {
  display: inline-grid;
  place-items: center;
  width: 54px;
  height: 54px;
  margin-bottom: 26px;
  border: 1px solid rgba(122, 79, 42, 0.22);
  border-radius: 50%;
  color: var(--cedar);
  background: var(--rice);
  font-weight: 800;
}

.process-list p {
  color: var(--muted);
  margin-bottom: 0;
}

.process-image {
  max-width: 1120px;
  margin: 0 auto;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 18px 48px rgba(53, 34, 20, 0.1);
}

.process-image img {
  width: 100%;
  height: auto;
}

.process-example {
  display: grid;
  grid-template-columns: minmax(220px, 0.8fr) minmax(320px, 1.2fr);
  gap: 28px;
  align-items: center;
  max-width: 1120px;
  margin: 28px auto 0;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 252, 246, 0.86);
  box-shadow: 0 18px 48px rgba(53, 34, 20, 0.08);
}

.process-example-text h3 {
  margin: 0 0 12px;
  color: var(--brown);
  font-size: clamp(26px, 3vw, 36px);
  line-height: 1.25;
}

.process-example-text p:last-child {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 18px;
}

.process-example-image {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}

.process-example-image img {
  display: block;
  width: 100%;
  height: auto;
}

.feature-band {
  color: #fff8ed;
  background:
    linear-gradient(rgba(53, 34, 20, 0.88), rgba(53, 34, 20, 0.88)),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px) 0 0 / 34px 34px;
}

.feature-band h2,
.feature-band .eyebrow {
  color: #fff8ed;
}

.feature-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-item {
  padding: 24px;
  background: rgba(255, 248, 237, 0.08);
  border-color: rgba(255, 248, 237, 0.16);
}

.feature-item span {
  color: #f7d9a5;
  display: block;
  margin-bottom: 8px;
  font-size: 18px;
}

.feature-item p {
  color: rgba(255, 248, 237, 0.78);
}

.faq-list {
  max-width: 900px;
}

.faq-list details {
  margin-bottom: 12px;
  padding: 0 22px;
}

.faq-list summary {
  cursor: pointer;
  color: var(--bark);
  font-weight: 800;
  padding: 22px 0;
}

.faq-list p {
  padding-bottom: 22px;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(340px, 0.9fr);
  gap: clamp(30px, 6vw, 88px);
  align-items: start;
}

.contact-info {
  display: grid;
  gap: 10px;
  margin: 28px 0;
  color: var(--cedar);
  font-weight: 700;
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.social-links a {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.58);
  color: var(--cedar);
  font-weight: 700;
  padding: 9px 14px;
}

.contact-form {
  display: grid;
  gap: 16px;
  padding: clamp(22px, 4vw, 34px);
}

.contact-form label {
  display: grid;
  gap: 8px;
  color: var(--bark);
  font-weight: 800;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid rgba(122, 79, 42, 0.2);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.82);
  color: var(--ink);
  padding: 12px 14px;
}

.contact-form input[type="file"] {
  cursor: pointer;
  padding: 10px 12px;
}

.upload-group {
  display: grid;
  gap: 12px;
}

.upload-title {
  color: var(--bark);
  font-weight: 800;
}

.upload-fields {
  display: grid;
  gap: 12px;
}

.upload-field {
  display: grid;
}

.field-hint {
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.6;
}

.contact-form textarea {
  resize: vertical;
}

.form-status {
  min-height: 28px;
  margin: 0;
  color: var(--moss);
  font-weight: 700;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 22px;
  align-items: center;
  padding: 32px clamp(20px, 6vw, 84px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  background: #fffaf3;
}

.site-footer strong,
.site-footer span,
.site-footer a {
  display: block;
}

.site-footer strong {
  color: var(--bark);
}

.site-footer p {
  margin: 0;
  white-space: nowrap;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 520ms ease, transform 520ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1180px) {
  .product-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .process-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 10px);
    right: 20px;
    left: 20px;
    display: grid;
    gap: 2px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(251, 247, 239, 0.98);
    box-shadow: var(--shadow);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 180ms ease, transform 180ms ease;
  }

  .site-nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-nav a {
    padding: 12px 14px;
  }

  .hero,
  .about-grid,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-carousel {
    min-height: 470px;
  }

  .carousel-track {
    height: 470px;
    min-height: 470px;
  }

  .intro-strip,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .intro-strip div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .intro-strip div:last-child {
    border-bottom: 0;
  }

  .product-grid,
  .process-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .process-example {
    grid-template-columns: 1fr;
  }

  .site-footer {
    grid-template-columns: 1fr;
  }

  .site-footer p {
    white-space: normal;
  }
}

@media (max-width: 620px) {
  .site-header {
    min-height: 72px;
    padding: 12px 16px;
  }

  .brand-mark img {
    width: 42px;
    height: 42px;
  }

  .brand-mark small {
    display: none;
  }

  .section-pad {
    padding-inline: 18px;
  }

  .hero {
    padding-top: 104px;
  }

  h1 {
    font-size: 42px;
  }

  h2 {
    font-size: 32px;
  }

  .process-example {
    padding: 18px;
  }

  .process-example-text p:last-child {
    font-size: 16px;
  }

  .hero-actions,
  .btn {
    width: 100%;
  }

  .hero-carousel {
    min-height: auto;
  }

  .carousel-track {
    height: 430px;
    min-height: 430px;
  }

  .carousel-controls {
    right: 12px;
    bottom: 12px;
    left: 12px;
    gap: 8px;
  }

  .carousel-btn {
    width: 38px;
    height: 38px;
  }

  .carousel-dots {
    gap: 6px;
  }

  .carousel-dots button {
    width: 8px;
    height: 8px;
  }

  .carousel-dots button.is-active {
    width: 20px;
  }

  .product-grid,
  .process-list {
    grid-template-columns: 1fr;
  }

  .process-list li {
    min-height: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}