/* MM 营销落地页 — 独立于后台 UI */
:root {
  --lp-bg: #0a0a0f;
  --lp-bg-elevated: #12121a;
  --lp-card: #16161f;
  --lp-border: #2a2a3a;
  --lp-text: #ececf4;
  --lp-muted: #8b8ba3;
  --lp-primary: #6366f1;
  --lp-primary-light: #818cf8;
  --lp-accent: #14b8a6;
  --lp-accent-glow: rgba(20, 184, 166, 0.25);
  --lp-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #14b8a6 100%);
  --lp-radius: 16px;
  --lp-max: 1120px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

.lp-body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--lp-bg);
  color: var(--lp-text);
  line-height: 1.65;
  min-height: 100vh;
}

.lp-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  height: 64px;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--lp-border);
}

.lp-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
  color: var(--lp-text);
}

.lp-logo {
  width: 36px;
  height: 36px;
  background: var(--lp-gradient);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
}

.lp-nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.lp-nav-links a {
  color: var(--lp-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

.lp-nav-links a:hover { color: var(--lp-text); }

.lp-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.65rem 1.25rem;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, opacity 0.15s;
}

.lp-btn:hover { transform: translateY(-1px); }

.lp-btn-primary {
  background: var(--lp-gradient);
  color: #fff;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.35);
}

.lp-btn-outline {
  background: transparent;
  color: var(--lp-text);
  border: 1px solid var(--lp-border);
}

.lp-btn-outline:hover { border-color: var(--lp-primary-light); }

.lp-hero {
  position: relative;
  padding: 5rem 1.5rem 4rem;
  text-align: center;
  overflow: hidden;
}

.lp-hero::before {
  content: "";
  position: absolute;
  inset: -40% -20% auto;
  height: 600px;
  background: radial-gradient(ellipse at center, rgba(99, 102, 241, 0.18) 0%, transparent 65%);
  pointer-events: none;
}

.lp-hero-inner {
  position: relative;
  max-width: var(--lp-max);
  margin: 0 auto;
}

.lp-badge {
  display: inline-block;
  padding: 0.35rem 0.9rem;
  margin-bottom: 1.25rem;
  background: rgba(20, 184, 166, 0.12);
  border: 1px solid rgba(20, 184, 166, 0.35);
  border-radius: 999px;
  color: var(--lp-accent);
  font-size: 0.85rem;
}

.lp-hero h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.lp-hero h1 .highlight {
  background: var(--lp-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.lp-hero-lead {
  max-width: 640px;
  margin: 0 auto 2rem;
  color: var(--lp-muted);
  font-size: 1.1rem;
}

.lp-hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-bottom: 3rem;
}

.lp-stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  padding-top: 1rem;
}

.lp-stat strong {
  display: block;
  font-size: 1.5rem;
  background: var(--lp-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.lp-stat span { font-size: 0.85rem; color: var(--lp-muted); }

.lp-section {
  max-width: var(--lp-max);
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

.lp-section-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.lp-section-header h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 0.5rem;
}

.lp-section-header p { color: var(--lp-muted); max-width: 560px; margin: 0 auto; }

.lp-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.lp-feature {
  background: var(--lp-card);
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius);
  padding: 1.5rem;
  transition: border-color 0.2s, transform 0.2s;
}

.lp-feature:hover {
  border-color: rgba(99, 102, 241, 0.4);
  transform: translateY(-2px);
}

.lp-feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(99, 102, 241, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.lp-feature h3 { font-size: 1.05rem; margin-bottom: 0.5rem; }
.lp-feature p { color: var(--lp-muted); font-size: 0.9rem; }

.lp-workflow {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  counter-reset: step;
}

.lp-step {
  position: relative;
  background: var(--lp-bg-elevated);
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius);
  padding: 1.25rem;
  counter-increment: step;
}

.lp-step::before {
  content: counter(step);
  display: inline-flex;
  width: 28px;
  height: 28px;
  align-items: center;
  justify-content: center;
  background: var(--lp-gradient);
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.lp-step h3 { font-size: 0.95rem; margin-bottom: 0.35rem; }
.lp-step p { color: var(--lp-muted); font-size: 0.85rem; }

.lp-scenes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.lp-scene {
  padding: 1.25rem 1.5rem;
  border-left: 3px solid var(--lp-accent);
  background: var(--lp-card);
  border-radius: 0 var(--lp-radius) var(--lp-radius) 0;
}

.lp-scene h3 { font-size: 0.95rem; margin-bottom: 0.35rem; }
.lp-scene p { color: var(--lp-muted); font-size: 0.88rem; }

.lp-cta-band {
  margin: 2rem 1.5rem 4rem;
  max-width: var(--lp-max);
  margin-left: auto;
  margin-right: auto;
  padding: 3rem 2rem;
  text-align: center;
  background: var(--lp-card);
  border: 1px solid var(--lp-border);
  border-radius: calc(var(--lp-radius) + 4px);
  position: relative;
  overflow: hidden;
}

.lp-cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 50%, var(--lp-accent-glow), transparent 55%);
  pointer-events: none;
}

.lp-cta-band h2 { position: relative; font-size: 1.75rem; margin-bottom: 0.75rem; }
.lp-cta-band p { position: relative; color: var(--lp-muted); margin-bottom: 1.5rem; }

.lp-footer {
  border-top: 1px solid var(--lp-border);
  padding: 2rem 1.5rem;
  text-align: center;
  color: var(--lp-muted);
  font-size: 0.85rem;
}

.lp-footer a { color: var(--lp-primary-light); text-decoration: none; }
.lp-footer-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 1.25rem; margin-bottom: 1rem; }

.lp-en {
  max-width: var(--lp-max);
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
  border-top: 1px solid var(--lp-border);
  color: var(--lp-muted);
  font-size: 0.9rem;
}

.lp-en h2 { color: var(--lp-text); font-size: 1.1rem; margin-bottom: 0.75rem; }

@media (max-width: 640px) {
  .lp-nav-links a:not(.lp-btn) { display: none; }
  .lp-hero { padding-top: 3rem; }
}