:root {
  --brand-ink: #141416;
  --brand-ink-2: #3a3a42;
  --ink-muted: #686873;
  --brand-bg: #ffffff;
  --brand-accent: #b27a5c; /* 温润金棕 */
  --brand-accent-2: #e8d2c0; /* 淡雅米杏 */
  --muted: #f6f6f7;
  --muted-2: #fafafa;
  --border: #e8e8ee;
  --shadow-1: 0 1px 2px rgba(20,20,22,0.04), 0 4px 14px rgba(20,20,22,0.06);
  --shadow-2: 0 8px 24px rgba(20,20,22,0.08), 0 2px 8px rgba(20,20,22,0.05);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 10px;
}
html, body { height: 100%; position: relative; overflow-x: hidden; }
html { scroll-behavior: smooth; }
*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--brand-ink);
  background: var(--brand-bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.7;
  letter-spacing: -0.01em;
  animation: fadeInBody 0.6s ease-out;
  position: relative;
}
main { position: relative; z-index: 1; }
footer { position: relative; z-index: 1; }
@keyframes fadeInBody {
  from { opacity: 0; }
  to { opacity: 1; }
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1160px, 92%); margin: 0 auto; }
.content { max-width: 70ch; }
.stack-xxl { margin-top: 96px; }
.stack-xl { margin-top: 72px; }
.stack-lg { margin-top: 48px; }
.stack-md { margin-top: 28px; }
.stack-sm { margin-top: 16px; }
.center { margin-inline: auto; }
.muted { color: var(--ink-muted); font-size: 14px; }

/* Header */
header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.75); backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-drawer { display: none; }
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand.has-logo .brand-mark { display: none; }
.brand-logo { height: 40px; width: auto; object-fit: contain; display: block; border-radius: var(--radius-md); transition: transform 0.2s ease; }
.brand-logo:hover { transform: scale(1.05); }
.brand-mark { width: 28px; height: 28px; border-radius: 50%; background: linear-gradient(135deg, var(--brand-accent), var(--brand-accent-2)); box-shadow: inset 0 0 0 1px rgba(255,255,255,0.5); }
.brand-name { font-weight: 700; letter-spacing: 0.06em; }
.nav-links { display: flex; gap: 24px; align-items: center; }
.nav-links a { position: relative; opacity: 0.9; transition: opacity 0.3s ease, transform 0.2s ease; }
.nav-links a:hover { opacity: 1; transform: translateY(-1px); }
.nav-links a::after { content: ""; position: absolute; left: 0; bottom: -8px; height: 2px; width: 0; background: var(--brand-accent); transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1); }
.nav-links a:hover::after { width: 100%; }
.nav-links a i { margin-right: 6px; color: var(--brand-accent); }
.nav-cta { padding: 10px 16px; border-radius: 999px; border: 1px solid var(--brand-accent); color: var(--brand-ink); background: linear-gradient(180deg, #fff, #fff7f2); box-shadow: var(--shadow-1); transition: transform .15s ease, box-shadow .2s ease; cursor: pointer; }
.nav-cta:hover { transform: translateY(-1px); box-shadow: var(--shadow-2); }
.nav-toggle { display: none; background: transparent; border: none; font-size: 20px; padding: 8px 10px; border-radius: 8px; cursor: pointer; }
.nav-toggle:focus-visible { outline: 3px solid rgba(178,122,92,0.35); outline-offset: 2px; }
@media (max-width: 920px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-drawer { position: fixed; inset: 64px 0 auto 0; background: #fff; border-bottom: 1px solid var(--border); display: block; padding: 12px 0; opacity: 0; transform: translateY(-6px); pointer-events: none; transition: opacity .2s ease, transform .2s ease; }
  .nav-drawer.open { opacity: 1; transform: translateY(0); pointer-events: auto; }
  .nav-drawer a { display: block; padding: 12px 24px; }
}

/* Hero */
.hero { padding: 88px 0 56px; background: radial-gradient(1200px 600px at 10% -10%, #fff8f2, transparent), linear-gradient(180deg, #fff, var(--muted)); }
.hero-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: center; }
.hero h1 { font-size: clamp(30px, 3.8vw, 48px); line-height: 1.22; margin: 0 0 16px; letter-spacing: -0.02em; }
.hero p { font-size: 16px; color: var(--ink-muted); margin: 0 0 28px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.btn { padding: 12px 18px; border-radius: var(--radius-md); border: 1px solid var(--brand-accent); background: var(--brand-accent); color: #fff; font-weight: 600; box-shadow: var(--shadow-1); transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.25s cubic-bezier(0.4, 0, 0.2, 1), background 0.25s ease, color 0.25s ease; cursor: pointer; position: relative; overflow: hidden; }
.btn i { margin-right: 8px; transition: transform 0.25s ease; }
.btn:hover { transform: translateY(-2px) scale(1.02); box-shadow: var(--shadow-2); }
.btn:hover i { transform: translateX(2px); }
.btn:active { transform: translateY(0) scale(1); }
.btn::before { content: ""; position: absolute; inset: 0; background: rgba(255,255,255,0.1); opacity: 0; transition: opacity 0.3s ease; }
.btn:hover::before { opacity: 1; }
.btn.secondary { background: #fff; color: var(--brand-ink); border-color: var(--brand-accent); }
.btn:focus-visible { outline: 3px solid rgba(178,122,92,0.35); outline-offset: 2px; }
.hero-card { border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; background: #fff; box-shadow: var(--shadow-1); transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.4s ease; }
.hero-card:hover { transform: translateY(-4px) scale(1.01); box-shadow: var(--shadow-2); }
.hero-card .media { aspect-ratio: 4/3; background: linear-gradient(135deg, #eaeaea, #d8d8d8); transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1); }
.hero-card:hover .media { transform: scale(1.05); }
.hero-card .meta { padding: 16px; color: var(--ink-muted); font-size: 14px; transition: color 0.3s ease; }
.hero-card:hover .meta { color: var(--brand-ink); }
@media (max-width: 920px) { .hero-grid { grid-template-columns: 1fr; } }

/* Sections */
section { padding: 80px 0; }
.section-head { margin-bottom: 24px; }
.eyebrow { color: var(--brand-accent); letter-spacing: 0.22em; font-size: 12px; text-transform: uppercase; }
h2 { margin: 10px 0 12px; font-size: clamp(22px, 2.6vw, 34px); letter-spacing: -0.01em; }
.lead { color: var(--ink-muted); }
.heading-icon { margin-right: 8px; color: var(--brand-accent); font-size: 0.9em; vertical-align: -0.08em; }
.section--alt { background: linear-gradient(180deg, #fff, var(--muted)); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.grid-2 { display: grid; grid-template-columns: 1.1fr 1fr; gap: 32px; align-items: center; }
@media (max-width: 920px) { .grid-2 { grid-template-columns: 1fr; } }

/* Story highlight */
.section--story { background: radial-gradient(1000px 480px at 10% -20%, #fff7f0, transparent), linear-gradient(180deg, #fff, #fff); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section--story h2 { font-size: clamp(24px, 3vw, 40px); }
.section--story .prose { font-size: 17px; line-height: 2; }

/* Values & Cards */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 920px) { .grid-3 { grid-template-columns: 1fr; } }
.card { border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 22px; background: #fff; box-shadow: var(--shadow-1); transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.3s ease; }
.card:hover { transform: translateY(-4px) scale(1.01); box-shadow: var(--shadow-2); border-color: var(--brand-accent); }
.card:active { transform: translateY(-2px) scale(1); }
.icon { color: var(--brand-accent); margin-right: 8px; font-size: 0.95em; vertical-align: -0.05em; }
.card .card-media { aspect-ratio: 16/10; border-radius: 12px; background: #efefef; margin-bottom: 14px; overflow: hidden; }
.card .card-media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.kpi { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
@media (max-width: 920px) { .kpi { grid-template-columns: repeat(2, 1fr); } }
.kpi-item { border: 1px dashed var(--border); border-radius: var(--radius-md); padding: 18px; text-align: center; background: #fff; transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.3s ease, background 0.3s ease; }
.kpi-item:hover { transform: translateY(-3px) scale(1.02); border-color: var(--brand-accent); background: linear-gradient(180deg, #fff, #fff7f2); }
.kpi-item b { font-size: 22px; letter-spacing: 0.02em; transition: transform 0.3s ease; }
.kpi-item:hover b { transform: scale(1.05); }

/* Partner CTA */
.cta { background: linear-gradient(180deg, var(--muted), #fff); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.cta-wrap { display: grid; grid-template-columns: 1.1fr 1fr; gap: 32px; align-items: start; }
@media (max-width: 920px) { .cta-wrap { grid-template-columns: 1fr; } }
.list { margin: 0; padding-left: 18px; }
.list li { margin: 8px 0; color: var(--brand-ink); }
.list.iconized { padding-left: 0; }
.list.iconized li { list-style: none; display: flex; align-items: flex-start; gap: 8px; }
.list.iconized i { color: var(--brand-accent); margin-top: 3px; }

/* Media helpers */
.media { position: relative; overflow: hidden; border-radius: var(--radius-lg); background: #efefef; }
.media.ratio-4x3 { aspect-ratio: 4/3; }
.media.ratio-3x2 { aspect-ratio: 3/2; }
.media.ratio-16x9 { aspect-ratio: 16/9; }
.media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.figure-caption { font-size: 12px; color: var(--ink-muted); margin-top: 8px; }
@media (hover: hover) and (pointer: fine) { .media:hover { transform: translateY(-2px) scale(1.01); box-shadow: var(--shadow-2); } }

/* Fabric Swatches */
.swatches { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
@media (max-width: 920px) { .swatches { grid-template-columns: repeat(3, 1fr); gap: 16px; } }
@media (max-width: 560px) { .swatches { grid-template-columns: repeat(3, 1fr); gap: 12px; } }
.swatch { display: grid; justify-items: center; gap: 8px; max-width: 120px; margin: 0 auto; }
@media (max-width: 560px) { .swatch { max-width: 100px; } }
.swatch-chip { width: 64px; height: 64px; border-radius: 999px; overflow: hidden; background: #eee; box-shadow: var(--shadow-1); border: 1px solid var(--border); transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s ease, border-color 0.3s ease; }
.swatch-chip:hover { transform: scale(1.15) rotate(5deg); box-shadow: var(--shadow-2); border-color: var(--brand-accent); }
@media (max-width: 560px) { .swatch-chip { width: 56px; height: 56px; } }
.swatch-chip img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1); }
.swatch-chip:hover img { transform: scale(1.1); }
.swatch label { font-size: 12px; color: var(--ink-muted); text-align: center; line-height: 1.4; }
@media (max-width: 560px) { .swatch label { font-size: 11px; } }

/* Media logos & Testimonials */
.media-logos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: center; justify-items: center; opacity: 1; }
@media (max-width: 920px) { .media-logos { grid-template-columns: repeat(3, 1fr); gap: 16px; } }
@media (max-width: 560px) { .media-logos { grid-template-columns: repeat(3, 1fr); gap: 12px; } }
.media-logos img { width: 100%; max-width: 120px; height: auto; max-height: 36px; object-fit: contain; border-radius: var(--radius-md); transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), filter 0.3s ease; }
.media-logos img:hover { transform: scale(1.1); filter: brightness(1.1); }
@media (max-width: 560px) { .media-logos img { max-width: 90px; max-height: 28px; } }
.quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 920px) { .quotes { grid-template-columns: 1fr; } }
.quote { border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 18px; background: #fff; box-shadow: var(--shadow-1); transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s ease, border-color 0.3s ease; }
.quote:hover { transform: translateY(-3px); box-shadow: var(--shadow-2); border-color: var(--brand-accent); }
.quote i { color: var(--brand-accent); opacity: .7; margin-right: 6px; transition: opacity 0.3s ease, transform 0.3s ease; }
.quote:hover i { opacity: 1; transform: scale(1.1); }
.quote small { color: var(--ink-muted); }

/* Gallery */
.gallery { display: grid; gap: 16px; grid-template-columns: repeat(3, 1fr); }
@media (max-width: 920px) { .gallery { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .gallery { grid-template-columns: 1fr; } }

/* Video showcase */
.video-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
@media (max-width: 920px) { .video-grid { grid-template-columns: 1fr; } }
.video-wrapper { position: relative; border-radius: var(--radius-lg); overflow: hidden; background: #000; box-shadow: var(--shadow-1); transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s ease; max-width: 100%; }
.video-wrapper:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); }
.video-wrapper.ratio-16x9 { aspect-ratio: 16/9; width: 100%; max-width: 100%; position: relative; }
.video-wrapper.ratio-16x9 video, .video-wrapper.ratio-16x9 iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; max-width: 100%; max-height: 100%; object-fit: contain; }
.video-wrapper video { width: 100%; height: 100%; max-width: 100%; max-height: 100%; display: block; border: none; position: absolute; top: 0; left: 0; z-index: 1; background: #000; object-fit: contain; }
.video-wrapper iframe { width: 100%; height: 100%; max-width: 100%; max-height: 100%; display: block; border: none; position: absolute; top: 0; left: 0; z-index: 1; }
.video-poster { position: absolute; inset: 0; width: 100%; height: 100%; max-width: 100%; max-height: 100%; object-fit: cover; cursor: pointer; transition: opacity 0.3s ease; z-index: 0; }
.video-poster.hidden { opacity: 0; pointer-events: none; }
.video-play-btn { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; background: rgba(0,0,0,0.3); cursor: pointer; transition: background 0.3s ease; z-index: 2; }
.video-play-btn:hover { background: rgba(0,0,0,0.5); }
.video-play-btn i { color: #fff; font-size: 48px; text-shadow: 0 2px 8px rgba(0,0,0,0.5); transition: transform 0.3s ease; }
.video-play-btn:hover i { transform: scale(1.1); }
.video-title { position: absolute; bottom: 0; left: 0; right: 0; padding: 16px 16px 48px; background: linear-gradient(to top, rgba(0,0,0,0.7), transparent); color: #fff; font-size: 14px; z-index: 3; pointer-events: none; }
@media (max-width: 560px) {
  .video-wrapper.ratio-16x9 { aspect-ratio: 16/9; max-width: 100%; width: 100%; }
  .video-wrapper video { width: 100% !important; max-width: 100% !important; max-height: 100% !important; height: 100% !important; }
  .video-wrapper iframe { width: 100% !important; max-width: 100% !important; max-height: 100% !important; height: 100% !important; }
}

/* Animations */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1); }
.reveal.in-view { opacity: 1; transform: translateY(0); }
.reveal.fade-up { transform: translateY(24px); }
.reveal.fade-left { transform: translateX(-24px); }
.reveal.fade-right { transform: translateX(24px); }
.reveal.scale { transform: scale(0.95); }
.reveal.scale.in-view { transform: scale(1); }

/* Stagger animation delays */
.reveal:nth-child(1) { transition-delay: 0.05s; }
.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.15s; }
.reveal:nth-child(4) { transition-delay: 0.2s; }
.reveal:nth-child(5) { transition-delay: 0.25s; }
.reveal:nth-child(6) { transition-delay: 0.3s; }
/* Lightbox */
.lightbox { position: fixed; inset: 0; background: rgba(0,0,0,0); display: none; align-items: center; justify-content: center; z-index: 100; padding: 24px; transition: background 0.3s ease; }
.lightbox.open { display: flex; background: rgba(0,0,0,0.85); animation: fadeInLightbox 0.3s ease; }
@keyframes fadeInLightbox {
  from { opacity: 0; }
  to { opacity: 1; }
}
.lightbox img { max-width: 92vw; max-height: 92vh; border-radius: var(--radius-lg); box-shadow: var(--shadow-2); animation: zoomInLightbox 0.4s cubic-bezier(0.4, 0, 0.2, 1); }
@keyframes zoomInLightbox {
  from { transform: scale(0.9); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}
.lightbox-close { position: absolute; top: 16px; right: 16px; background: rgba(255,255,255,0.9); border: 1px solid var(--border); border-radius: 999px; padding: 8px 10px; cursor: pointer; transition: transform 0.2s ease, background 0.2s ease; }
.lightbox-close:hover { transform: scale(1.1) rotate(90deg); background: rgba(255,255,255,1); }
.lightbox-close:focus-visible { outline: 3px solid rgba(178,122,92,0.35); outline-offset: 2px; }

/* Image loading animation */
@keyframes fadeInImage {
  from { opacity: 0; }
  to { opacity: 1; }
}
img { animation: fadeInImage 0.5s ease-out; }

/* Gradient animation (subtle) */
@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
.hero { animation: fadeInBody 0.6s ease-out, gradientShift 15s ease infinite; background-size: 200% 200%; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
  .hero { animation: fadeInBody 0.6s ease-out; background-size: 100% 100%; }
}

/* Rich text */
.prose { color: var(--brand-ink); font-size: 16px; line-height: 1.9; }
.prose h3, .prose h4 { line-height: 1.35; letter-spacing: -0.01em; margin: 1.2em 0 0.6em; }
.prose p { margin: 0.8em 0; color: var(--brand-ink); }
.prose strong { font-weight: 700; }
.prose em { font-style: italic; }
.prose ul { padding-left: 1.2em; margin: 0.8em 0; }
.prose li { margin: 0.35em 0; }
.prose a { color: var(--brand-accent); text-decoration: underline; text-underline-offset: 3px; }

/* Form */
form { display: grid; gap: 14px; }
.field { display: grid; gap: 6px; }
.field label { font-size: 14px; color: var(--ink-muted); }
.field label i { color: var(--brand-accent); margin-right: 6px; }
.field input, .field select, .field textarea { padding: 12px 14px; border: 1px solid var(--border); border-radius: var(--radius-sm); font: inherit; background: #fff; transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease, background 0.3s ease; }
.field input:hover, .field select:hover, .field textarea:hover { border-color: var(--brand-accent-2); background: #fff; }
.field input:focus-visible, .field select:focus-visible, .field textarea:focus-visible { outline: none; border-color: var(--brand-accent); box-shadow: 0 0 0 4px rgba(178,122,92,0.12); transform: translateY(-1px); background: #fff; }
.hint { font-size: 12px; color: var(--ink-muted); }
.agree { display: flex; gap: 8px; align-items: center; font-size: 13px; color: var(--ink-muted); }

/* Scroll to top button - 确保始终在最上层 */
.scroll-top { 
  position: fixed !important; 
  bottom: 24px !important; 
  right: 24px !important; 
  width: 48px; 
  height: 48px; 
  background: var(--brand-accent) !important; 
  color: #fff !important; 
  border: none !important; 
  border-radius: 50% !important; 
  box-shadow: var(--shadow-2) !important; 
  cursor: pointer; 
  z-index: 99999 !important; 
  opacity: 0; 
  transform: translateY(20px); 
  pointer-events: none; 
  transition: opacity 0.3s ease, transform 0.3s ease, background 0.3s ease; 
  display: flex !important; 
  align-items: center; 
  justify-content: center; 
  font-size: 18px; 
  touch-action: manipulation; 
  -webkit-tap-highlight-color: transparent; 
  margin: 0 !important; 
  padding: 0 !important; 
}
.scroll-top.visible { 
  opacity: 1 !important; 
  transform: translateY(0) !important; 
  pointer-events: auto !important; 
}
.scroll-top:hover { 
  background: #a06a4a !important; 
  transform: translateY(-4px); 
  box-shadow: 0 12px 28px rgba(20,20,22,0.15) !important; 
}
.scroll-top:active { 
  transform: translateY(-2px) scale(0.95); 
}
.scroll-top:focus-visible { 
  outline: 3px solid rgba(178,122,92,0.35); 
  outline-offset: 2px; 
}
@media (max-width: 560px) { 
  .scroll-top { 
    bottom: 20px !important; 
    right: 16px !important; 
    width: 56px !important; 
    height: 56px !important; 
    font-size: 20px !important; 
    min-width: 56px !important; 
    min-height: 56px !important; 
    z-index: 99999 !important; 
  } 
}

/* ============================================
   桌面端联系浮窗 (Desktop Contact Float)
   ============================================ */

/* 桌面端仅在桌面显示，移动端隐藏 */
.contact-float-desktop {
  display: block;
}
@media (max-width: 560px) {
  .contact-float-desktop {
    display: none !important;
  }
}

/* 桌面端背景遮罩 */
.contact-card-backdrop-desktop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(20, 20, 22, 0.6);
  z-index: 99990;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0s linear 0.3s;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.contact-card-backdrop-desktop.open {
  opacity: 1;
  visibility: visible;
  transition-delay: 0s;
}

/* 桌面端触发按钮 */
.contact-float-desktop {
  position: fixed;
  bottom: 90px;
  right: 24px;
  z-index: 99998;
}
.contact-trigger-desktop {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--brand-accent), #a06a4a);
  color: #fff;
  border: none;
  border-radius: 50%;
  box-shadow: var(--shadow-2);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s ease;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}
.contact-trigger-desktop:hover {
  transform: scale(1.1) rotate(10deg);
  box-shadow: 0 12px 28px rgba(20,20,22,0.2);
}

/* 桌面端联系卡片 */
.contact-card-desktop {
  position: fixed;
  bottom: 160px;
  right: 24px;
  width: 280px;
  max-width: 90vw;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 40px rgba(20, 20, 22, 0.2);
  padding: 20px;
  border: 1px solid var(--border);
  opacity: 0;
  transform: translateY(10px) scale(0.95);
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 99999;
  visibility: hidden;
}
.contact-card-desktop.open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
  visibility: visible;
}
.contact-card-desktop h4 {
  margin: 0 0 12px;
  font-size: 16px;
}
.contact-card-desktop .qr-code {
  width: 180px;
  height: 180px;
  margin: 0 auto 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #fafafa;
}
.contact-card-desktop .qr-code img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.contact-card-desktop .contact-info {
  font-size: 13px;
  color: var(--ink-muted);
  text-align: center;
  margin-top: 8px;
}
.contact-card-desktop .phone-btn-desktop {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  background: linear-gradient(135deg, var(--brand-accent), #a06a4a);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  box-shadow: var(--shadow-1);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  margin-top: 8px;
  cursor: pointer;
}
.contact-card-desktop .phone-btn-desktop:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
  color: #fff;
}
.contact-card-desktop .phone-btn-desktop:active {
  transform: translateY(0) scale(0.98);
}
.contact-card-desktop .phone-btn-desktop i {
  font-size: 16px;
}
.contact-card-desktop .close-btn-desktop {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 32px;
  height: 32px;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--ink-muted);
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s ease;
}
.contact-card-desktop .close-btn-desktop:hover {
  color: var(--brand-ink);
}
.contact-card-desktop .close-btn-desktop:active {
  transform: scale(0.9);
}

/* ============================================
   移动端联系卡片 (Mobile Contact Card)
   ============================================ */

/* 移动端仅在移动端显示，桌面端隐藏 */
.contact-float-mobile {
  display: none;
}
@media (max-width: 560px) {
  .contact-float-mobile {
    display: block;
  }
}

/* 移动端触发按钮 */
.contact-float-mobile {
  position: fixed;
  bottom: 88px;
  right: 16px;
  z-index: 99998;
}
.contact-trigger-mobile {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--brand-accent), #a06a4a);
  color: #fff;
  border: none;
  border-radius: 50%;
  box-shadow: var(--shadow-2);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}
.contact-trigger-mobile:active {
  transform: scale(0.95);
}

/* 移动端联系卡片 - 从底部滑入 */
.contact-card-mobile {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  width: 100%;
  max-height: 85vh;
  background: #fff;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  box-shadow: 0 -8px 24px rgba(20, 20, 22, 0.15);
  padding: 24px 20px 32px;
  border-top: 1px solid var(--border);
  transform: translateY(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 99999;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}
.contact-card-mobile.open {
  transform: translateY(0);
}
.contact-card-mobile h4 {
  margin: 0 0 16px;
  font-size: 18px;
  text-align: center;
}
.contact-card-mobile .qr-code {
  width: 200px;
  height: 200px;
  margin: 0 auto 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #fafafa;
}
.contact-card-mobile .qr-code img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.contact-card-mobile .contact-info {
  font-size: 14px;
  color: var(--ink-muted);
  text-align: center;
  margin-top: 12px;
}
.contact-card-mobile .phone-btn-mobile {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  background: linear-gradient(135deg, var(--brand-accent), #a06a4a);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 600;
  font-size: 16px;
  box-shadow: var(--shadow-1);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  margin-top: 12px;
  width: 100%;
  max-width: 280px;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.contact-card-mobile .phone-btn-mobile:active {
  transform: scale(0.98);
}
.contact-card-mobile .phone-btn-mobile i {
  font-size: 18px;
}
.contact-card-mobile .close-btn-mobile {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--ink-muted);
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s ease;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.contact-card-mobile .close-btn-mobile:active {
  transform: scale(0.9);
  color: var(--brand-ink);
}

/* Footer */
footer { padding: 44px 0; border-top: 1px solid var(--border); background: #fff; }
.foot { display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: center; }
@media (max-width: 720px) { .foot { grid-template-columns: 1fr; } }
.social-links { display: flex; gap: 16px; align-items: center; margin-top: 16px; }
.social-links a { display: flex; align-items: center; gap: 8px; color: var(--ink-muted); font-size: 14px; transition: color 0.3s ease, transform 0.2s ease; }
.social-links a:hover { color: var(--brand-accent); transform: translateY(-2px); }
.social-links a i { font-size: 18px; }
.foot .muted i { margin-right: 6px; color: var(--brand-accent); }