/* 金尘珠宝 — Corporate site (gd-) Apple-inspired */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --gd-gold: #C5A059;
  --gd-gold-soft: #E8D5A8;
  --gd-gold-deep: #8F7040;
  --gd-black: #000000;
  --gd-ink: #1D1D1F;
  --gd-mut: #6E6E73;
  --gd-hint: #86868B;
  --gd-line: #D2D2D7;
  --gd-surface: #F5F5F7;
  --gd-white: #FFFFFF;
  --gd-wrap: 1120px;
  --gd-font: "SF Pro Display", "SF Pro Text", -apple-system, BlinkMacSystemFont,
             "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --gd-ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--gd-font);
  color: var(--gd-ink);
  background: var(--gd-white);
  line-height: 1.6;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
footer { margin-top: auto; }
a { color: var(--gd-gold-deep); text-decoration: none; }
a:hover { color: var(--gd-ink); }
img { max-width: 100%; display: block; }

.gd-wrap { max-width: var(--gd-wrap); margin: 0 auto; padding: 0 22px; }

.gd-fade {
  opacity: 0; transform: translateY(28px);
  transition: opacity .8s var(--gd-ease), transform .8s var(--gd-ease);
}
.gd-fade.gd-visible { opacity: 1; transform: none; }

/* Nav — Apple frosted */
.gd-navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  height: 52px;
}
.gd-navbar-inner {
  max-width: var(--gd-wrap); margin: 0 auto; padding: 0 22px;
  display: flex; align-items: center; justify-content: space-between; height: 100%;
}
.gd-brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 600; font-size: 15px; color: #F5F5F7; letter-spacing: 0.02em;
}
.gd-brand img {
  width: 28px; height: 28px; border-radius: 50%;
  object-fit: cover;
}
.gd-links { display: flex; gap: 28px; list-style: none; align-items: center; }
.gd-links a {
  font-size: 12px; font-weight: 400; color: rgba(245, 245, 247, 0.8);
  transition: color .2s;
}
.gd-links a:hover { color: #fff; }
.gd-links .gd-cta {
  background: var(--gd-gold); color: #000 !important;
  padding: 6px 14px; border-radius: 980px; font-weight: 600; font-size: 12px;
}
.gd-links .gd-cta:hover { background: var(--gd-gold-soft); color: #000 !important; }
.gd-burger {
  display: none; width: 40px; height: 40px; border: none; background: transparent;
  cursor: pointer; flex-direction: column; justify-content: center; gap: 5px;
}
.gd-burger i { display: block; height: 1.5px; background: #F5F5F7; border-radius: 2px; }

/* Hero — full-bleed dark, brand first */
.gd-hero {
  min-height: 100vh;
  min-height: 100dvh;
  padding: 120px 22px 80px;
  background:
    radial-gradient(ellipse 70% 55% at 50% 40%, rgba(197, 160, 89, 0.18), transparent 65%),
    #000;
  color: #F5F5F7;
  display: flex; align-items: center; justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.gd-hero::after {
  content: "";
  position: absolute; inset: auto 0 0; height: 120px;
  background: linear-gradient(transparent, #000);
  pointer-events: none;
}
.gd-hero-content {
  max-width: 780px; margin: 0 auto; position: relative; z-index: 1;
}
.gd-hero-logo {
  width: 96px; height: 96px; margin: 0 auto 28px;
  border-radius: 50%;
  box-shadow: 0 0 60px rgba(197, 160, 89, 0.25);
  animation: gd-logo-in 1.1s var(--gd-ease) both;
}
.gd-hero h1 {
  font-size: clamp(40px, 7vw, 72px);
  line-height: 1.05;
  letter-spacing: -0.035em;
  font-weight: 700;
  margin-bottom: 18px;
  animation: gd-rise 1s var(--gd-ease) 0.12s both;
}
.gd-hero h1 span { color: var(--gd-gold); }
.gd-hero-desc {
  font-size: clamp(17px, 2.2vw, 21px);
  color: rgba(245, 245, 247, 0.72);
  max-width: 28em;
  margin: 0 auto 28px;
  font-weight: 400;
  animation: gd-rise 1s var(--gd-ease) 0.22s both;
}
.gd-hero-tag {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gd-gold-soft);
  border: 1px solid rgba(197, 160, 89, 0.35);
  padding: 8px 16px;
  border-radius: 980px;
  animation: gd-rise 1s var(--gd-ease) 0.32s both;
}
@keyframes gd-logo-in {
  from { opacity: 0; transform: scale(0.86); }
  to { opacity: 1; transform: none; }
}
@keyframes gd-rise {
  from { opacity: 0; transform: translateY(22px); }
  to { opacity: 1; transform: none; }
}

/* Sections */
.gd-section { padding: clamp(72px, 10vw, 120px) 0; }
.gd-section--alt { background: var(--gd-surface); }
.gd-section--dark {
  background: #000;
  color: #F5F5F7;
}
.gd-heading {
  font-size: clamp(28px, 4vw, 44px);
  letter-spacing: -0.025em;
  font-weight: 700;
  text-align: center;
  margin-bottom: 12px;
  line-height: 1.15;
}
.gd-subheading {
  text-align: center;
  color: var(--gd-mut);
  font-size: clamp(15px, 1.8vw, 19px);
  margin-bottom: 52px;
  max-width: 32em;
  margin-left: auto;
  margin-right: auto;
}
.gd-section--dark .gd-subheading { color: rgba(245, 245, 247, 0.55); }

.gd-overview {
  display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: center;
}
.gd-overview-img {
  border-radius: 24px; overflow: hidden;
  background: #000;
  aspect-ratio: 1;
  display: grid; place-items: center;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.12);
}
.gd-overview-img img { width: 56%; height: auto; }
.gd-overview-body h3 {
  font-size: clamp(22px, 3vw, 28px);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  font-weight: 700;
}
.gd-overview-body p { color: var(--gd-mut); margin-bottom: 14px; font-size: 16px; }

.gd-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.gd-tile {
  background: var(--gd-white);
  border-radius: 22px;
  padding: 32px 28px;
  transition: transform .35s var(--gd-ease);
}
.gd-section--alt .gd-tile { background: var(--gd-white); box-shadow: 0 2px 16px rgba(0,0,0,0.04); }
.gd-section:not(.gd-section--alt) .gd-tile { border: 1px solid var(--gd-line); }
.gd-tile:hover { transform: translateY(-4px); }
.gd-tile-icon {
  width: 44px; height: 44px; border-radius: 12px; margin-bottom: 18px;
  background: #F7F1E4; color: var(--gd-gold-deep);
  display: grid; place-items: center; font-size: 15px; font-weight: 700;
}
.gd-tile h3 { font-size: 20px; margin-bottom: 10px; letter-spacing: -0.015em; }
.gd-tile p { color: var(--gd-mut); font-size: 15px; }

.gd-product {
  display: grid; grid-template-columns: auto 1fr; gap: 28px; align-items: center;
  max-width: 760px; margin: 0 auto;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(197, 160, 89, 0.22);
  border-radius: 24px; padding: 32px;
}
.gd-product img {
  width: 80px; height: 80px; border-radius: 50%;
  background: #000;
}
.gd-product h3 { font-size: 24px; margin-bottom: 8px; letter-spacing: -0.02em; }
.gd-product p { color: rgba(245, 245, 247, 0.6); font-size: 15px; }

.gd-contact-box {
  max-width: 480px; margin: 0 auto; text-align: center;
  background: var(--gd-white);
  border-radius: 22px; padding: 36px 28px;
  box-shadow: 0 2px 20px rgba(0,0,0,0.04);
}
.gd-contact-box p { color: var(--gd-mut); margin-bottom: 8px; font-size: 16px; }

.gd-footer {
  background: #000; color: rgba(245, 245, 247, 0.5);
  padding: 36px 22px; font-size: 12px;
}
.gd-footer-inner {
  max-width: var(--gd-wrap); margin: 0 auto;
  display: flex; flex-wrap: wrap; gap: 16px;
  justify-content: space-between; align-items: center;
}
.gd-footer a { color: var(--gd-gold); }
.gd-footer a:hover { color: var(--gd-gold-soft); }
.gd-footer-nav { display: flex; flex-wrap: wrap; gap: 18px; list-style: none; }
.gd-footer-nav a { color: rgba(245, 245, 247, 0.55); }
.gd-footer-nav a:hover { color: var(--gd-gold); }

.gd-legal-page { padding: 120px 0 88px; }
.gd-legal-page h1 {
  font-size: clamp(28px, 4vw, 40px);
  letter-spacing: -0.025em;
  margin-bottom: 8px;
}
.gd-updated { color: var(--gd-hint); font-size: 14px; margin-bottom: 28px; }
.gd-legal-page h2 { font-size: 20px; margin: 32px 0 12px; letter-spacing: -0.015em; }
.gd-legal-page p, .gd-legal-page li { color: var(--gd-mut); margin-bottom: 10px; font-size: 15.5px; line-height: 1.75; }
.gd-legal-page ul { padding-left: 1.2em; margin-bottom: 12px; }

@media (max-width: 900px) {
  .gd-overview { grid-template-columns: 1fr; gap: 32px; }
  .gd-overview-img { max-width: 360px; margin: 0 auto; width: 100%; }
  .gd-grid { grid-template-columns: 1fr; }
  .gd-product { grid-template-columns: 1fr; text-align: center; justify-items: center; }
}
@media (max-width: 760px) {
  .gd-burger { display: flex; }
  .gd-links {
    display: none; position: absolute; top: 52px; left: 0; right: 0;
    flex-direction: column; gap: 0;
    background: rgba(0, 0, 0, 0.94);
    backdrop-filter: blur(20px);
    padding: 8px 22px 20px;
  }
  .gd-links.gd-links--open { display: flex; }
  .gd-links li { width: 100%; }
  .gd-links a {
    display: block; padding: 14px 4px; font-size: 15px;
    border-top: 1px solid rgba(255,255,255,0.08);
  }
  .gd-links .gd-cta { text-align: center; margin-top: 10px; }
}
@media (prefers-reduced-motion: reduce) {
  .gd-fade, .gd-hero-logo, .gd-hero h1, .gd-hero-desc, .gd-hero-tag {
    animation: none !important; opacity: 1 !important; transform: none !important;
  }
}