@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;700;900&display=swap');

:root {
  --bg: #12140f;
  --bg-alt: #181b14;
  --panel: #1e2118;
  --panel-border: rgba(216, 201, 154, 0.14);
  --text: #ece6d6;
  --muted: #a8a693;
  --gold: #d9b45c;
  --gold-dim: #a9863f;
  --rust: #c0503a;
  --green: #6f8c4a;
  --max-width: 1120px;
  --radius: 10px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--gold); text-decoration: none; }
a:hover { color: #f0d18a; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(18, 20, 15, 0.88);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--panel-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}

.brand-logo {
  height: 34px;
  width: auto;
}

.brand-name {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.brand-name-sub {
  font-size: 0.65rem;
  color: var(--muted);
  font-weight: 500;
  letter-spacing: 0.08em;
  margin-left: 4px;
}

.site-nav {
  display: flex;
  gap: 28px;
}

.site-nav a {
  color: var(--text);
  font-size: 0.95rem;
  opacity: 0.85;
}

.site-nav a:hover {
  color: var(--gold);
  opacity: 1;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 34px;
  height: 34px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text);
  border-radius: 2px;
}

/* Hero */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: flex-end;
  background-size: cover;
  background-position: center 30%;
  background-color: var(--bg);
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(12,14,10,0.15) 0%, rgba(12,14,10,0.25) 45%, rgba(12,14,10,0.95) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding-top: 60px;
  padding-bottom: 70px;
}

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

.hero-eyebrow {
  color: var(--gold);
  font-weight: 700;
  letter-spacing: 0.03em;
  margin: 0 0 14px;
  font-size: 0.95rem;
}

.hero-tagline {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text);
  max-width: 560px;
  margin: 0 0 28px;
  opacity: 0.92;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 34px;
}

.badge {
  border: 1px solid var(--panel-border);
  background: rgba(30, 33, 24, 0.7);
  color: var(--text);
  font-size: 0.82rem;
  padding: 6px 14px;
  border-radius: 999px;
}

.badge-gold {
  background: var(--gold);
  border-color: var(--gold);
  color: #241b09;
  font-weight: 700;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 13px 30px;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.98rem;
  border: 1px solid transparent;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

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

.btn-primary {
  background: var(--gold);
  color: #241b09;
}

.btn-primary:hover { background: #e6c374; }

.btn-ghost {
  background: transparent;
  border-color: rgba(236, 230, 214, 0.4);
  color: var(--text);
}

.btn-ghost:hover { border-color: var(--gold); color: var(--gold); }

.scroll-cue {
  position: absolute;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--muted);
  font-size: 1.3rem;
  z-index: 1;
  animation: bob 2s ease-in-out infinite;
}

@keyframes bob {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, 8px); }
}

/* Sections */
.section {
  padding: 100px 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-kicker {
  color: var(--gold);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.82rem;
  margin: 0 0 12px;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 900;
  margin: 0 0 24px;
}

.lead {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 780px;
  margin: 0 0 50px;
}

.lead strong { color: var(--text); }

/* About */
.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.about-card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 28px;
}

.about-card h3 {
  color: var(--gold);
  margin: 0 0 10px;
  font-size: 1.1rem;
}

.about-card p {
  color: var(--muted);
  margin: 0;
  font-size: 0.95rem;
}

/* Features */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.feature-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 26px 30px;
}

.feature-icon {
  font-size: 1.8rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 2px;
}

.feature-item h3 {
  margin: 0 0 8px;
  font-size: 1.15rem;
  color: var(--text);
}

.feature-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* Video */
.video-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--panel-border);
  background: #000;
}

.video-wrap video {
  width: 100%;
  display: block;
  max-height: 640px;
}

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

.gallery-grid img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--panel-border);
  transition: transform 0.25s ease, filter 0.25s ease;
}

.gallery-grid img:hover {
  transform: scale(1.03);
  filter: brightness(1.08);
}

.gallery-grid img:first-child {
  grid-column: span 2;
  height: 456px;
}

/* Footer */
.site-footer {
  background: #0c0e09;
  border-top: 1px solid var(--panel-border);
  padding: 56px 0 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 32px;
  padding-bottom: 40px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.footer-company {
  margin: 0 0 4px;
  font-weight: 700;
}

.footer-desc {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.footer-contact {
  text-align: right;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-contact p { margin: 0 0 8px; }

.footer-beian a { color: var(--muted); }
.footer-beian a:hover { color: var(--gold); }

.footer-bottom {
  border-top: 1px solid var(--panel-border);
  padding: 20px 0;
  text-align: center;
  color: var(--muted);
  font-size: 0.82rem;
}

/* Responsive */
@media (max-width: 860px) {
  .about-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid img:first-child { grid-column: span 2; height: 320px; }
  .gallery-grid img { height: 180px; }
  .footer-contact { text-align: left; }
}

@media (max-width: 720px) {
  .site-nav {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--panel-border);
    flex-direction: column;
    padding: 12px 24px 20px;
    gap: 16px;
    display: none;
  }
  .site-nav.open { display: flex; }
  .nav-toggle { display: flex; }
  .section { padding: 70px 0; }
  .gallery-grid { grid-template-columns: 1fr; }
  .gallery-grid img:first-child { grid-column: span 1; height: 220px; }
  .feature-item { padding: 20px; }
}