:root {
  --ink: #172026;
  --ink-deep: #11191e;
  --gold: #c59b55;
  --gold-dark: #6b4e1e;
  --cream: #f7f5f0;
  --paper: #ffffff;
  --line: #e6e0d6;
  --muted: #4a5459;
  --mint: #e4eee9;
  --focus: #f4cf72;
  --header-h: 76px;
  /* 桌面顶栏标准：1280 = Tailwind xl / 常见笔记本横屏。低于此宽度不再硬塞一行导航，改走手机菜单。 */
  --bp-desktop: 1280px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--cream);
  font: 16px/1.7 Inter, "Segoe UI", Arial, sans-serif;
}

img { max-width: 100%; height: auto; }
a { color: var(--gold-dark); }
h1, h2, h3 { font-family: "Playfair Display", Georgia, serif; font-weight: 600; line-height: 1.15; }
h1 { font-size: clamp(36px, 6vw, 72px); margin: 0 0 16px; }
h2 { font-size: clamp(28px, 4vw, 42px); margin: 8px 0 16px; }
h3 { font-size: 22px; margin: 0 0 8px; }
p { margin: 0 0 16px; }
ul { margin: 0 0 20px; padding-left: 1.2em; }
li { margin: 0 0 8px; }

.skip {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.skip:focus {
  position: fixed;
  left: 16px;
  top: 16px;
  width: auto;
  height: auto;
  margin: 0;
  clip: auto;
  z-index: 20;
  background: var(--paper);
  color: var(--ink);
  padding: 12px 16px;
  outline: 3px solid var(--focus);
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: nowrap;
  gap: 16px;
  padding: 14px 6%;
  min-height: var(--header-h);
  background: rgba(247, 245, 240, .88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--ink);
  min-height: 48px;
  min-width: 0;
  flex: 0 1 auto;
}
.brand-mark { width: 40px; height: 48px; display: block; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name {
  font: 700 22px/1 "Playfair Display", Georgia, serif;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.brand-llc {
  margin-top: 4px;
  color: var(--gold-dark);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  font-weight: 700;
}

.nav-desktop {
  display: none;
  flex-wrap: nowrap;
  flex-shrink: 0;
  gap: 22px;
  align-items: center;
  font-size: 14px;
}
.nav-desktop a {
  color: var(--ink);
  text-decoration: none;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
}
.nav-desktop .btn-ink {
  padding: 10px 16px;
  min-height: 44px;
  font-size: 14px;
}
.nav-desktop a[aria-current="page"] { text-decoration: underline; text-underline-offset: 4px; }

.nav-mobile { display: block; position: static; }
.nav-mobile summary {
  list-style: none;
  cursor: pointer;
  min-height: 48px;
  min-width: 48px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  background: var(--paper);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.nav-mobile summary::-webkit-details-marker { display: none; }
.nav-burger {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  box-shadow: 0 -6px 0 currentColor, 0 6px 0 currentColor;
}
.nav-mobile[open] .nav-burger {
  background: transparent;
  box-shadow: none;
  position: relative;
}
.nav-mobile[open] .nav-burger::before,
.nav-mobile[open] .nav-burger::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
}
.nav-mobile[open] .nav-burger::before { transform: rotate(45deg); }
.nav-mobile[open] .nav-burger::after { transform: rotate(-45deg); }
.nav-mobile-panel {
  position: fixed;
  left: 0;
  right: 0;
  top: var(--header-h);
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  padding: 16px 6% 28px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  z-index: 19;
  box-shadow: 0 28px 60px rgba(17, 25, 30, .14);
}
.nav-mobile-panel a {
  padding: 12px 4px;
  min-height: 48px;
  display: flex;
  align-items: center;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  font-weight: 600;
}
.nav-mobile-panel a:last-child {
  border-bottom: 0;
  margin-top: 8px;
  justify-content: center;
  background: var(--ink);
  color: #fff;
  width: 100%;
}
body.nav-open { overflow: hidden; }

.btn,
.btn-ink,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 20px;
  border-radius: 2px;
  font-weight: 700;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  font: 700 16px/1.2 Inter, "Segoe UI", Arial, sans-serif;
}
.btn { background: #6b4e1e; color: #fff; }
.btn-ink { background: var(--ink); color: #fff; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn:hover, .btn-ink:hover { filter: brightness(1.08); }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.hero {
  position: relative;
  padding: 88px 8%;
  color: #fff;
  overflow: hidden;
  min-height: 520px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: #11191e;
}
.hero-cinema { min-height: min(92vh, 920px); padding: 120px 8% 88px; }
.hero-copy { position: relative; z-index: 2; max-width: 720px; }
.hero-cinema h1 { letter-spacing: -.03em; }
.hero picture {
  position: absolute;
  inset: 0;
  display: block;
  margin: 0;
  z-index: 0;
}
.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 72% 38%;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(90deg, rgba(17, 25, 30, .88), rgba(17, 25, 30, .42) 55%, rgba(17, 25, 30, .28));
}
.hero .eyebrow { color: #e4c07a; }
.hero p { max-width: 650px; font-size: 19px; color: #f2eee7; }
.hero .btn-ghost { color: #fff; border-color: #fff; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }

.wrap { max-width: 1180px; margin: auto; padding: 72px 6%; }
.narrow { max-width: 820px; }
.eyebrow {
  color: var(--gold-dark);
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  font-size: 12px;
}
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

.card {
  background: var(--paper);
  padding: 0 0 24px;
  border-top: 3px solid var(--gold);
  overflow: hidden;
}
.card a.card-link { display: block; color: inherit; text-decoration: none; }
.card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; display: block; }
.card h2, .card h3, .card p { padding: 0 24px; }
.card h2, .card h3 { margin-top: 18px; }
.card p { color: var(--muted); margin-bottom: 0; }
.card-pad { padding: 24px; }
.card-pad h2, .card-pad h3, .card-pad p { padding: 0; }

.dark { background: var(--ink); color: #fff; }
.dark .eyebrow { color: var(--gold); }
.dark .card { background: #243139; }
.dark .card p { color: #d3dbde; }
.partner { background: var(--mint); }
.partner .card { border-top-color: #668d7a; }

.notice, .box {
  border-left: 4px solid var(--gold);
  padding: 16px 18px;
  background: var(--paper);
  margin: 24px 0;
}
.note { background: var(--paper); padding: 20px; margin-top: 24px; }

.crumb { font-size: 14px; margin-bottom: 18px; }
.crumb a { color: var(--gold-dark); }

.figure { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; display: block; margin: 20px 0; }

.inquiry {
  display: grid;
  gap: 14px;
  background: var(--paper);
  padding: 24px;
  margin-top: 20px;
  border: 1px solid var(--line);
}
.inquiry label { display: grid; gap: 6px; font-weight: 600; }
.inquiry input,
.inquiry select,
.inquiry textarea {
  font: 16px/1.4 Inter, "Segoe UI", Arial, sans-serif;
  padding: 12px;
  min-height: 48px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  width: 100%;
}
.inquiry textarea { min-height: 120px; resize: vertical; }
.form-hint { color: var(--muted); font-size: 14px; font-weight: 400; margin: 0; }
.form-error { color: #8a1f1f; font-weight: 600; }

.faq details {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 4px 16px;
  margin: 0 0 10px;
}
.faq summary {
  cursor: pointer;
  font-weight: 700;
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(45deg);
  flex: 0 0 auto;
}
.faq details[open] summary::after { transform: rotate(-135deg); }
.faq details p { color: var(--muted); padding-bottom: 12px; }

.page-hero {
  background: linear-gradient(180deg, #efe8da 0%, var(--cream) 100%);
  border-bottom: 1px solid var(--line);
  padding: 48px 6% 40px;
}
.page-hero-inner { max-width: 1180px; margin: 0 auto; }
.page-hero h1 { max-width: 16ch; margin-bottom: 12px; }
.page-lede { font-size: 18px; max-width: 58ch; color: var(--muted); margin: 0; }
.page-hero-cinema {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: flex-end;
  color: #fff;
  background: var(--ink-deep);
  border-bottom: 0;
  padding: 0;
  overflow: hidden;
}
.page-hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 38%;
}
.page-hero-cinema::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(17, 25, 30, .18) 0%, rgba(17, 25, 30, .82) 100%);
}
.page-hero-cinema .page-hero-inner {
  position: relative;
  z-index: 1;
  width: 100%;
  padding: 96px 6% 48px;
}
.page-hero-cinema h1 { color: #fff; max-width: 18ch; }
.page-hero-cinema .eyebrow { color: #e4c07a; }
.page-hero-cinema .crumb,
.page-hero-cinema .crumb a { color: #e6e0d6; }
.page-hero-cinema .lede,
.page-hero-cinema .page-lede { color: #f2eee7; }
.page-body { padding-top: 48px; }
.page-body.narrow { max-width: 820px; }
.prose-legal { max-width: 68ch; }
.prose-legal h2 { margin-top: 2.4rem; scroll-margin-top: calc(var(--header-h) + 12px); }
.prose-legal h2:first-of-type { margin-top: 0; }
.faq-layout,
.legal-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(260px, .75fr);
  gap: 48px;
  align-items: start;
}
.legal-layout { grid-template-columns: minmax(220px, .55fr) minmax(0, 1.45fr); }
.rail { position: sticky; top: calc(var(--header-h) + 16px); }
.legal-toc {
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: sticky;
  top: calc(var(--header-h) + 16px);
  border-left: 2px solid var(--gold);
  padding: 4px 0 4px 16px;
}
.legal-toc a {
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  min-height: 36px;
  display: inline-flex;
  align-items: center;
}
.legal-toc a:hover { color: var(--gold-dark); }
.fact-list {
  list-style: none;
  padding: 0;
  margin: 8px 0 20px;
}
.fact-list li {
  display: grid;
  grid-template-columns: 10em 1fr;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  margin: 0;
}
.fact-list span {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-weight: 700;
}
.layers-grid { margin: 28px 0 0; }
.layer-item {
  background: #243139;
  padding: 24px;
  border-top: 3px solid var(--gold);
}
.layer-item p { color: #d3dbde; margin: 0; }
.dark-lede,
.dark .lede { color: #d3dbde; }
.dark a { color: #e4c07a; }
.dark .inquiry { color: var(--ink); }
.dark .inquiry a { color: var(--gold-dark); }
.identity-split { margin-top: 36px; }

.site-footer {
  padding: 34px 6%;
  background: var(--ink-deep);
  color: #cbd1d3;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font-size: 13px;
}
.site-footer a { color: #e6e0d6; }
.footer-help { display: flex; flex-wrap: wrap; gap: 8px 14px; }
.footer-meta { display: block; margin-top: 8px; color: #9aa3a6; }

.page-404 { text-align: left; }
address.vcard {
  font-style: normal;
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 20px 22px;
  margin: 16px 0 20px;
  line-height: 1.7;
}

.split {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 48px;
  align-items: center;
}
.frame { margin: 0; overflow: hidden; }
.frame img { width: 100%; height: 100%; object-fit: cover; display: block; aspect-ratio: 4 / 3; }
.frame-wide { margin: 8px 0 28px; }
.frame-wide img { aspect-ratio: 16 / 9; }
.pull {
  font: 500 26px/1.35 "Playfair Display", Georgia, serif;
  color: var(--ink-deep);
  border-left: 3px solid var(--gold);
  padding-left: 18px;
}
.lede { color: var(--muted); max-width: 42ch; }
.section-head {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  align-items: end;
  margin-bottom: 28px;
}
.text-link { font-weight: 700; }
.cards-lift .card { transition: transform .25s ease, border-color .25s ease; }
.cards-lift .card:hover { transform: translateY(-4px); }
.band {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: end;
  color: #fff;
  overflow: hidden;
}
.band img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.band::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(17, 25, 30, .15), rgba(17, 25, 30, .78));
}
.band-copy { position: relative; z-index: 1; max-width: 640px; padding: 72px 8%; }
.band .eyebrow { color: #e4c07a; }
.partner-cinema figure { margin: 0; }
.partner-cinema img { width: 100%; max-height: 520px; object-fit: cover; display: block; }
.partner-copy { padding-top: 48px; }
.steps-rich .step { padding-top: 8px; border-top: 1px solid rgba(197, 155, 85, .35); }
.footer-brand { display: flex; gap: 14px; align-items: flex-start; }
.footer-brand strong { display: block; color: #fff; font-size: 16px; }

#about, #products, #partners, #contact, #indoor, #decorative, #commercial, #inquire, #request {
  scroll-margin-top: calc(var(--header-h) + 12px);
}

@media (min-width: 1280px) {
  .nav-desktop { display: flex; }
  .nav-mobile { display: none; }
}

@media (max-width: 1279.98px) {
  .nav-desktop { display: none; }
  .nav-mobile { display: block; }
  .site-header { padding: 12px 6%; }
  .site-footer { flex-direction: column; }
  .site-footer .footer-help { margin-top: 12px; }
  .faq-layout,
  .legal-layout { grid-template-columns: 1fr; }
  .rail,
  .legal-toc { position: static; }
  .fact-list li { grid-template-columns: 1fr; gap: 4px; }
}

@media (max-width: 1024px) {
  .grid, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .split, .section-head { grid-template-columns: 1fr; }
  .hero { padding: 80px 7%; }
  .page-hero { padding: 40px 7% 32px; }
  .page-hero-cinema { min-height: 360px; }
  .layers-grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .hero { padding: 70px 7%; min-height: 460px; }
  .hero-bg { object-position: 80% 30%; }
  .grid, .grid-2, .grid-4, .split, .section-head { grid-template-columns: 1fr; display: block; }
  .hero-cinema { min-height: 78vh; padding: 88px 7% 64px; }
  .band { min-height: 460px; }
  .wrap { padding: 56px 7%; }
  .page-hero { padding: 32px 7% 28px; }
  .page-hero h1 { font-size: clamp(32px, 10vw, 48px); }
  .page-hero-cinema { min-height: 320px; }
  .page-hero-cinema .page-hero-inner { padding: 80px 7% 36px; }
  .nav-mobile-label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); }
}

@media (min-width: 1440px) {
  .wrap { padding-left: 0; padding-right: 0; }
  .hero { padding-left: max(8%, calc((100% - 1180px) / 2)); }
}

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

@media print {
  .site-header, .nav-mobile, .hero-actions, .inquiry, .skip { display: none !important; }
  body { background: #fff; color: #000; }
  a[href]::after { content: " (" attr(href) ")"; font-size: 12px; }
}