/* ============================================================
   落地页专属样式
   ============================================================ */
body { padding-top: var(--header-h); }

/* Hero */
.hero {
  position: relative;
  min-height: calc(100vh - var(--header-h));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-8) var(--sp-5);
  overflow: hidden;
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
}
.hero h1 {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--sp-3);
  letter-spacing: -0.02em;
}
.hero-sub {
  font-size: clamp(24px, 3vw, 38px);
  font-weight: 500;
  margin-bottom: var(--sp-5);
  color: var(--text-2);
}
.hero-sub .hl { color: var(--color-primary); }
.hero-sub .hl2 { color: var(--color-accent); }
.hero-desc {
  font-size: var(--fs-lg);
  color: var(--text-3);
  margin-bottom: var(--sp-6);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.hero-cta {
  display: flex;
  gap: var(--sp-3);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--sp-6);
}
.hero-banner {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--grad-primary-soft);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-pill);
  font-size: var(--fs-sm);
  color: var(--text);
  margin-bottom: var(--sp-5);
}
.hero-banner .arrow { color: var(--color-primary); font-size: var(--fs-lg); transition: transform var(--t-fast); }
.hero-banner:hover .arrow { transform: translateX(4px); }
.hero-features {
  display: flex;
  justify-content: center;
  gap: var(--sp-5);
  color: var(--text-3);
  font-size: var(--fs-sm);
  flex-wrap: wrap;
}

/* Hero 装饰 */
.hero-deco { position: absolute; inset: 0; z-index: 1; pointer-events: none; }
.planet {
  position: absolute;
  width: 360px; height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #2ecc71 0%, #00d4b5 35%, #06241f 80%);
  box-shadow: 0 0 80px rgba(0,212,181,0.5), inset 0 0 60px rgba(0,0,0,0.5);
  top: 50%; right: -100px;
  transform: translateY(-50%);
  animation: float 6s ease-in-out infinite;
  opacity: 0.85;
}
.orbit {
  position: absolute;
  width: 500px; height: 500px;
  border: 1px solid rgba(0,212,181,0.15);
  border-radius: 50%;
  top: 50%; right: -170px;
  transform: translateY(-50%);
  animation: spin 30s linear infinite;
}
.orbit::after {
  content: '';
  position: absolute;
  top: -6px; left: 50%;
  width: 12px; height: 12px;
  background: var(--color-primary);
  border-radius: 50%;
  box-shadow: 0 0 20px var(--color-primary);
  transform: translateX(-50%);
}
@keyframes float { 0%,100% { transform: translateY(-50%); } 50% { transform: translateY(-55%); } }
@keyframes spin { from { transform: translateY(-50%) rotate(0); } to { transform: translateY(-50%) rotate(360deg); } }
.spark {
  position: absolute;
  color: var(--color-primary);
  font-size: 24px;
  opacity: 0.4;
  animation: twinkle 3s ease-in-out infinite;
}
.spark.s1 { top: 15%; left: 8%; animation-delay: 0s; }
.spark.s2 { top: 30%; right: 15%; font-size: 32px; animation-delay: 0.6s; }
.spark.s3 { bottom: 25%; left: 12%; animation-delay: 1.2s; }
.spark.s4 { bottom: 15%; right: 30%; animation-delay: 1.8s; }
@keyframes twinkle { 0%,100% { opacity: 0.2; transform: scale(1); } 50% { opacity: 0.8; transform: scale(1.2); } }

@media (max-width: 900px) {
  .planet, .orbit { width: 260px; height: 260px; right: -130px; }
  .orbit { width: 380px; height: 380px; right: -190px; }
}

/* 通用 section */
.section { padding: var(--sp-8) 0; position: relative; }
.section-title {
  text-align: center;
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 600;
  margin-bottom: var(--sp-2);
  line-height: 1.3;
}
.section-title .title-sm { font-size: 0.6em; color: var(--text-3); display: block; font-weight: 400; margin-top: 8px; }
.section-sub {
  text-align: center;
  color: var(--text-3);
  margin-bottom: var(--sp-7);
  font-size: var(--fs-lg);
}

/* 模型 marquee */
.models-marquee {
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.models-track {
  display: flex;
  gap: var(--sp-3);
  animation: marquee 40s linear infinite;
  width: max-content;
}
.models-track:hover { animation-play-state: paused; }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.model-chip {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  font-size: var(--fs-md);
  white-space: nowrap;
  transition: all var(--t-fast);
}
.model-chip:hover { border-color: var(--border-strong); background: var(--bg-card-hover); }
.model-chip img { width: 24px; height: 24px; }

/* 四能力 */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--sp-4);
}
.cap-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: var(--sp-6);
  transition: all var(--t-med) var(--ease);
  overflow: hidden;
}
.cap-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--grad-cta);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-med) var(--ease);
}
.cap-card:hover { transform: translateY(-4px); border-color: var(--border-strong); box-shadow: var(--shadow-glow); }
.cap-card:hover::before { transform: scaleX(1); }
.cap-icon { font-size: 48px; margin-bottom: var(--sp-3); }
.cap-card h3 { font-size: var(--fs-2xl); margin-bottom: var(--sp-2); }
.cap-card p { color: var(--text-3); font-size: var(--fs-md); line-height: 1.6; margin-bottom: var(--sp-4); }
.cap-arrow { color: var(--color-primary); font-size: var(--fs-xl); }

/* 画廊 */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--sp-3);
}
.g-item {
  position: relative;
  aspect-ratio: 1;
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--bg-card);
}
.g-item img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--t-med); }
.g-item:hover img { transform: scale(1.08); }
.g-item::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(0,0,0,0.6));
  opacity: 0; transition: opacity var(--t-med);
}
.g-item:hover::after { opacity: 1; }

/* CTA */
.cta-card {
  background: linear-gradient(135deg, rgba(0,212,181,0.1), rgba(46,204,113,0.1));
  border: 1px solid var(--border-strong);
  border-radius: var(--r-xl);
  padding: var(--sp-8) var(--sp-6);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(0,212,181,0.3), transparent 60%);
  pointer-events: none;
}
.cta-emoji {
  font-size: 48px;
  margin-bottom: var(--sp-4);
  display: flex;
  justify-content: center;
  gap: var(--sp-3);
}
.cta-emoji span:nth-child(2) { color: var(--color-primary); }
.cta-emoji span:nth-child(3) { color: var(--color-secondary); }
.cta-card h2 { font-size: clamp(28px, 4vw, 40px); margin-bottom: var(--sp-3); }
.cta-card p { color: var(--text-2); margin-bottom: var(--sp-5); font-size: var(--fs-lg); }

/* 悬浮客服 */
.fab-kefu {
  position: fixed;
  right: 24px; bottom: 80px;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--grad-cta);
  color: #06241f;
  font-size: 24px;
  box-shadow: 0 6px 24px rgba(0,212,181,0.4);
  z-index: 90;
  transition: transform var(--t-fast);
}
.fab-kefu:hover { transform: scale(1.1); }