:root {
  --bg: #f3efe7;
  --ink: #1f1b17;
  --muted: #6e6559;
  --line: #d9cebe;
  --surface: #faf7f1;
  --accent: #a27736;
  --accent-2: #2e5a4b;
  --maxw: min(1160px, 92vw);
  --header-h: 82px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  color: var(--ink);
  font-family: "Noto Sans SC", "Manrope", sans-serif;
  background: linear-gradient(180deg, #f6f2ea 0%, #f2eee7 100%);
  line-height: 1.66;
}

a {
  color: inherit;
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  height: var(--header-h);
  backdrop-filter: none;
  border-bottom: 0;
  background: transparent;
}

.header-row {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo-wrap {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-wrap img {
  height: 38px;
  width: auto;
  filter: drop-shadow(0 3px 12px rgba(0, 0, 0, 0.25));
}

.logo-wrap strong {
  font-family: "Manrope", sans-serif;
  font-weight: 800;
  font-size: 0.88rem;
  color: #f2e9dd;
  letter-spacing: 0.08em;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.main-nav a {
  text-decoration: none;
  color: rgba(245, 237, 226, 0.86);
  font-family: "Manrope", sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.main-nav a.active {
  background: #f4ead7;
  color: #211c15;
  border-color: transparent;
}

.lang-switch {
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.07);
  padding: 3px;
  display: inline-flex;
  gap: 4px;
}

.lang-btn {
  border: 0;
  border-radius: 999px;
  font-family: "Manrope", sans-serif;
  font-weight: 800;
  padding: 6px 11px;
  color: rgba(245, 237, 226, 0.82);
  background: transparent;
  cursor: pointer;
}

.lang-btn.active {
  background: #f4ead7;
  color: #1f1a14;
}

.hero-band {
  width: 100%;
  min-height: 100svh;
  background-color: #13100d;
  background-image: linear-gradient(20deg, rgba(0, 0, 0, 0.62), rgba(0, 0, 0, 0.25)),
    radial-gradient(1200px 700px at 85% 15%, rgba(192, 154, 88, 0.32), transparent 58%),
    var(--hero-image);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  display: grid;
  align-items: end;
  position: relative;
  overflow: hidden;
}

.hero-band::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 8, 6, 0.9) 0%, rgba(10, 8, 6, 0.36) 48%, rgba(10, 8, 6, 0.18) 100%);
}

.hero-shell {
  width: var(--maxw);
  margin: 0 auto;
  position: relative;
  z-index: 1;
  padding: clamp(40px, 7vh, 72px) 0;
}

.hero-copy {
  max-width: 720px;
  color: #f5ecdf;
}

.hero-copy h1 {
  margin: 8px 0 12px;
  line-height: 1.04;
  letter-spacing: -0.02em;
  font-size: clamp(2.2rem, 6vw, 4.7rem);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid rgba(245, 233, 214, 0.58);
  color: #f5e8d3;
  padding: 0.2rem 0.78rem;
  border-radius: 999px;
  font-size: 0.8rem;
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(3px);
}

.dual {
  margin: 0;
}

.dual .cn {
  display: block;
  font-size: 1.03rem;
  max-width: 66ch;
}

.dual .en {
  display: block;
  font-size: 0.92rem;
  color: #cbbfae;
  margin-top: 4px;
  font-family: "Manrope", sans-serif;
  max-width: 66ch;
}

.hero-actions {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.btn {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: "Manrope", sans-serif;
  font-weight: 800;
  border-radius: 12px;
  padding: 11px 15px;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn.primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 14px 30px rgba(162, 119, 54, 0.36);
}

.btn.secondary {
  background: rgba(255, 255, 255, 0.08);
  color: #f6ecde;
  border: 1px solid rgba(255, 255, 255, 0.24);
}

.site-main {
  width: 100%;
}

.content-block {
  width: var(--maxw);
  margin: 0 auto;
  padding: clamp(34px, 4vw, 50px) 0;
}

.content-shell {
  width: var(--maxw);
  margin: 0 auto;
  display: block;
}

.content-main {
  min-width: 0;
}

.page-outline {
  display: none;
}

.page-outline h4 {
  margin: 0 0 10px;
  font-family: "Manrope", sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: #7d7060;
}

.page-outline a {
  display: block;
  text-decoration: none;
  margin: 0 0 8px;
  color: #5a5147;
  font-size: 0.92rem;
}

.page-outline a:hover {
  color: #2d271f;
}

.content-block + .content-block {
  border-top: 1px solid var(--line);
}

.section-head {
  max-width: 830px;
  margin-bottom: 18px;
}

.section-head h2 {
  margin: 0 0 6px;
  font-size: clamp(1.6rem, 2.8vw, 2.4rem);
  line-height: 1.12;
}

.split {
  display: grid;
  grid-template-columns: 1.06fr 0.94fr;
  gap: 22px;
}

.stack {
  display: grid;
  gap: 12px;
}

.panel {
  background: linear-gradient(180deg, #f9f6ef 0%, #f4eee3 100%);
  border: 1px solid #e0d5c6;
  border-radius: 18px;
  padding: 16px;
}

.panel h3,
.panel h4 {
  margin: 0 0 6px;
  line-height: 1.25;
}

.timeline-line {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.milestone {
  padding-top: 10px;
  border-top: 2px solid #c7b086;
}

.milestone b {
  display: inline-block;
  font-family: "Manrope", sans-serif;
  font-size: 1.02rem;
  margin-bottom: 4px;
  color: #61451e;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.gallery img {
  width: 100%;
  display: block;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid #d7cab8;
  aspect-ratio: 4 / 3;
  transition: transform 0.38s ease;
}

.gallery img:hover {
  transform: scale(1.02);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.product-item {
  border-top: 1px solid #d8cab7;
  padding-top: 10px;
}

.product-item img {
  width: 100%;
  border-radius: 10px;
  border: 1px solid #d9cdbd;
  background: #fff;
}

.product-item .dual {
  margin-top: 8px;
}

.quote {
  border-left: 3px solid #b78d4f;
  padding-left: 12px;
  color: #463c30;
}

.contact-list {
  margin: 0;
  padding-left: 1.1rem;
}

.contact-list li {
  margin-bottom: 6px;
}

.source-note {
  margin: 0;
  padding: 20px 0 12px;
  font-size: 0.9rem;
  color: #6f6659;
  border-top: 1px dashed #d4c6b2;
}

footer {
  width: var(--maxw);
  margin: 0 auto;
  padding: 14px 0 42px;
  color: #6f6659;
}

.process-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.process-step {
  border-top: 2px solid #c6b08b;
  padding-top: 10px;
}

.process-step b {
  display: block;
  font-family: "Manrope", sans-serif;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: #6a4b20;
}

.proposal-band {
  width: var(--maxw);
  margin: 0 auto;
  margin-top: -14px;
  position: relative;
  z-index: 2;
}

.proposal-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.proposal-item {
  background: linear-gradient(180deg, #fbf8f2 0%, #f3ede2 100%);
  border: 1px solid #dacbb7;
  border-radius: 12px;
  padding: 12px;
}

.proposal-item b {
  display: block;
  font-family: "Manrope", sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.07em;
  color: #6a4b20;
  margin-bottom: 4px;
}

[data-fade] {
  opacity: 0;
  transform: translateY(16px);
  animation: rise 0.65s ease forwards;
  animation-delay: var(--d, 0s);
}

@keyframes rise {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1040px) {
  .header-row {
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
    align-content: center;
    padding: 8px 0;
  }

  .main-nav {
    justify-content: center;
  }

  .hero-band {
    min-height: 78svh;
  }

  .split,
  .product-grid,
  .timeline-line,
  .gallery,
  .process-bar,
  .proposal-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 700px) {
  .hero-band {
    min-height: 86svh;
  }

  .split,
  .product-grid,
  .timeline-line,
  .gallery,
  .process-bar,
  .proposal-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy h1 {
    font-size: clamp(1.9rem, 11vw, 3rem);
  }
}