/* ============================================================
   首页专属样式
   ============================================================ */

/* 首页导航 — 白色文字透明背景 */
.nav .nav-logo { color: #fff; }
.nav .nav-links { color: rgba(255,255,255,0.85); }
.nav .nav-logo-dot { color: var(--accent-light); }
.nav .nav-link:hover { color: #fff; }
.nav .nav-link.active { color: #fff; }
.nav .nav-link.active::after { background: #fff; }
.nav .nav-cta { background: var(--accent); }
.nav .nav-cta:hover { background: var(--accent-light); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  background: var(--ink-900);
  color: #fff;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.2) contrast(1.1) brightness(0.95);
  transform: scale(1.02);
  animation: heroZoom 20s ease-in-out infinite alternate;
}
@keyframes heroZoom {
  to { transform: scale(1.06); }
}

/* 完全去掉遮罩 */
.hero-overlay { display: none; }

.hero-content {
  position: absolute;
  z-index: 2;
  top: 30%;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: var(--container);
  padding-inline: 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-title {
  font-size: clamp(1.25rem, 3vw, 2rem);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.01em;
  max-width: 580px;
  margin-bottom: 16px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.4), 0 1px 3px rgba(0,0,0,0.25);
}
.hero-title-text { color: #fff; }

.hero-desc {
  font-size: 1rem;
  color: rgba(255,255,255,0.7);
  max-width: 400px;
  line-height: 1.7;
  text-shadow: 0 1px 8px rgba(0,0,0,0.5), 0 0 3px rgba(0,0,0,0.3);
}

/* ---------- Hero 数据条 — 底部居中 ---------- */
.hero-stats {
  position: absolute;
  bottom: 48px;
  left: 0;
  right: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
}
.hero-stat { text-align: center; }
.hero-stat-value {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 700;
  color: #fff;
  font-variant-numeric: tabular-nums;
}
.hero-stat-label {
  font-size: 0.6875rem;
  color: #fff;
  letter-spacing: 0.08em;
  margin-top: 2px;
}
.hero-stat-divider {
  width: 1px;
  height: 28px;
  background: rgba(255,255,255,0.3);
}

.hero-scroll { display: none; }

.hero-deco {
  position: absolute;
  right: 5%;
  bottom: 8%;
  z-index: 2;
  font-family: var(--font-serif);
  font-size: clamp(10rem, 18vw, 16rem);
  line-height: 1;
  color: rgba(255,255,255,0.04);
  pointer-events: none;
  user-select: none;
}

/* ---------- 视频横幅 ---------- */
.banner {
  position: relative;
  overflow: hidden;
  background: var(--ink-900);
  min-height: 480px;
  display: flex;
  align-items: center;
}

.banner-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.15) brightness(0.95);
}

.banner-overlay { display: none; }

.banner-bottom-fade {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 96px;
  background: linear-gradient(to top, #fff, transparent);
  z-index: 2;
}

.banner-content {
  position: relative;
  z-index: 2;
  max-width: var(--container);
  margin-inline: auto;
  padding: 80px 24px;
  width: 100%;
}

.banner-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600;
  line-height: 1.2;
  color: #fff;
  margin-bottom: 24px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.banner-title-accent {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--accent-light);
  text-shadow: 0 0 48px var(--accent-glow), 0 2px 20px rgba(0,0,0,0.3);
}

.banner-desc {
  font-size: 0.875rem;
  color: var(--ink-400);
  max-width: 360px;
  line-height: 1.9;
  margin-bottom: 40px;
  text-shadow: 0 1px 8px rgba(0,0,0,0.4);
}

.banner-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.banner-tag {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255,255,255,0.15);
  background: rgba(255,255,255,0.06);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ink-400);
  transition: background 0.3s, border-color 0.3s, color 0.3s;
}
.banner-tag:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.3);
  color: #fff;
}

.banner-deco {
  position: absolute;
  right: 6%;
  top: 50%; transform: translateY(-50%);
  z-index: 2;
  font-family: var(--font-serif);
  font-size: clamp(6rem, 12vw, 10rem);
  color: rgba(255,255,255,0.04);
  pointer-events: none;
  user-select: none;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 768px) {
  .hero-stats { gap: 20px; bottom: 32px; }
  .banner { min-height: 400px; }
  .hero-deco { display: none; }
}