:root { --brand:#2563eb; --warn:#ffc107; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif; }

.hero {
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  background-image:
    radial-gradient(circle at 20% 20%, rgba(37,99,235,.25), transparent 40%),
    radial-gradient(circle at 80% 80%, rgba(255,193,7,.15), transparent 40%),
    linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
}
.product-card { transition: transform .3s ease; }
.product-card:hover { transform: translateY(-6px); }
.feature-card { transition: transform .25s ease, box-shadow .25s ease; }
.feature-card:hover { transform: translateY(-4px); box-shadow: 0 .75rem 1.5rem rgba(0,0,0,.1) !important; }
.step-num {
  width:56px; height:56px; line-height:56px; margin:0 auto 1rem;
  border-radius:50%; background: var(--brand); color:#fff;
  font-size:1.5rem; font-weight:700;
}
.cta { background: linear-gradient(135deg, #1e3a8a, #1e293b); }
.page-head .container { padding-top:1rem; padding-bottom:1rem; }
.navbar-brand i { font-size:1.3rem; }
footer small { display:inline-block; margin-top:.25rem; }

/* Hero 右侧规格列表（替代原先分散的小徽章） */
.hero-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .85rem 1rem;
  margin-top: .5rem;
}
.spec-item {
  display: flex;
  align-items: center;
  gap: .55rem;
  padding: .7rem .85rem;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 500;
  color: #fff;
}
.spec-item i { color: var(--warn); font-size: 1.15rem; }
@media (max-width: 575.98px) {
  .hero-specs { grid-template-columns: 1fr; }
}

/* 产品理念区块 */
.tone-section { background: linear-gradient(135deg, #f8fafc, #eef2ff); }
.tone-yes {
  background: linear-gradient(135deg, #eff6ff, #f0f9ff) !important;
  border: 1px solid #bfdbfe !important;
}
.tone-yes h6 { color: #1d4ed8; }

/* 下载平台卡片 */
.dl-card { transition: transform .25s ease, box-shadow .25s ease; }
.dl-card:hover { transform: translateY(-5px); box-shadow: 0 .75rem 1.5rem rgba(0,0,0,.12) !important; }
.dl-disabled { opacity: .85; }
.dl-disabled:hover { transform: none; }
.dl-disabled .bi { color: #adb5bd !important; }
.bi-apple { font-size: 1em; }

/* 品牌 logo（黑色方块，贴合深色导航/页脚） */
.navbar-logo { width: 30px; height: 30px; border-radius: 6px; }
.footer-logo { width: 24px; height: 24px; border-radius: 5px; }
.hero-logo { width: 120px; height: 120px; border-radius: 22px; margin: 0 auto; }