/* ===================================================
   home.css - 首页专属样式
   =================================================== */

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: var(--gradient-hero);
  padding-top: 68px;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  padding: 80px 24px;
}

/* Hero Content */
.hero-content {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}

.hero-title {
  font-size: clamp(2.2rem, 4.5vw, 3.5rem);
  line-height: 1.15;
  margin-bottom: 20px;
  color: var(--text-primary);
}

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

.hero-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 36px;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.hero-platforms {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.platform-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 12px;
  border-radius: 8px;
  font-size: 0.82rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: all var(--transition);
}

.platform-tag:hover {
  background: rgba(26, 110, 245, 0.1);
  border-color: var(--primary);
  color: var(--primary-light);
}

/* Hero Visual Card */
.hero-visual {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
}

.hero-card {
  background: rgba(17, 24, 39, 0.85);
  border: 1px solid rgba(26, 110, 245, 0.25);
  border-radius: 20px;
  padding: 28px;
  width: 100%;
  max-width: 380px;
  backdrop-filter: blur(12px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(26,110,245,0.1);
}

.hc-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 24px;
}

.hc-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.hc-dot.red    { background: #ff5f57; }
.hc-dot.yellow { background: #febc2e; }
.hc-dot.green  { background: #28c840; }

.hc-title {
  margin-left: 6px;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: monospace;
}

.hc-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.hc-stat {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
}

.hc-stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.hc-stat-val {
  font-size: 1.05rem;
  font-weight: 700;
  font-family: 'SF Mono', 'Fira Code', monospace;
}

.hc-stat-val.green { color: var(--accent); }
.hc-stat-val.blue  { color: var(--primary-light); }

.hc-chart {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 64px;
  background: rgba(255,255,255,0.02);
  border-radius: 8px;
  padding: 8px;
  margin-bottom: 20px;
}

.hc-chart-bar {
  flex: 1;
  background: rgba(26, 110, 245, 0.35);
  border-radius: 3px;
  transition: background var(--transition);
}

.hc-chart-bar.active {
  background: var(--primary);
}

.hc-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ---------- Steps ---------- */
.steps-row {
  display: flex;
  align-items: center;
  gap: 20px;
  justify-content: center;
}

.step {
  flex: 1;
  max-width: 280px;
  text-align: center;
  padding: 36px 24px;
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: transform var(--transition), border-color var(--transition);
}

.step:hover {
  transform: translateY(-4px);
  border-color: var(--border-active);
}

.step-num {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.step-icon {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.step h3 {
  font-size: 1.05rem;
  margin-bottom: 10px;
}

.step p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.step-arrow {
  font-size: 1.5rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

/* ---------- Cert ---------- */
.cert-section {
  padding: 64px 0;
}

.cert-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px;
}

.cert-badges {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.cert-badge {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.cert-icon {
  font-size: 1.8rem;
  flex-shrink: 0;
}

.cert-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.cert-sub {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

/* ---------- CTA ---------- */
.cta-section {
  position: relative;
  overflow: hidden;
  text-align: center;
}

.cta-glow {
  position: absolute;
  width: 500px;
  height: 500px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(26, 110, 245, 0.15), transparent 70%);
  pointer-events: none;
}

.cta-inner {
  position: relative;
  z-index: 1;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 48px;
    padding: 60px 24px;
  }

  .hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .hero-desc {
    text-align: center;
  }

  .steps-row {
    flex-direction: column;
  }

  .step-arrow {
    transform: rotate(90deg);
  }

  .cert-badges {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
}

@media (max-width: 600px) {
  .cert-card {
    padding: 28px 20px;
  }

  .cert-badges {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .hero-visual {
    display: none;
  }
}