:root { color-scheme: light; }
* { box-sizing: border-box; }
body { margin: 0; color: #17243a; background: linear-gradient(180deg, #f5f9fe 0%, #e6f7fd 100%); font-family: "Alibaba PuHuiTi 2.0", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; }
a { color: inherit; text-decoration: none; }
.seo-shell { width: min(1180px, calc(100vw - 40px)); margin: 0 auto; }
.seo-nav { border-bottom: 1px solid rgba(78, 129, 180, .16); background: rgba(255,255,255,.86); backdrop-filter: blur(16px); }
.seo-nav-inner { min-height: 66px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.seo-brand { font-size: 16px; font-weight: 800; color: #17375f; }
.seo-nav-links { display: flex; flex-wrap: wrap; gap: 18px; color: #4f6783; font-size: 14px; }
.seo-nav-links a:hover { color: #0e73d8; }
.seo-main { padding: 36px 0 56px; }
.seo-breadcrumb { margin-bottom: 16px; color: #68809b; font-size: 13px; }
.seo-breadcrumb a { color: #397fc9; }
.seo-hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, .7fr); gap: 30px; align-items: center; padding: 34px; border: 1px solid rgba(113, 169, 224, .3); border-radius: 8px; background: rgba(255,255,255,.78); box-shadow: 0 18px 44px rgba(38, 91, 144, .08); }
.seo-kicker { margin: 0 0 8px; color: #387fd0; font-size: 14px; font-weight: 700; }
h1 { margin: 0; color: #142d4f; font-size: clamp(28px, 4vw, 42px); line-height: 1.2; }
.seo-summary { margin: 16px 0 0; color: #526982; font-size: 15px; line-height: 1.85; }
.seo-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.seo-tags span { padding: 6px 10px; border: 1px solid rgba(64, 138, 217, .2); border-radius: 999px; background: rgba(94, 173, 234, .1); color: #286baa; font-size: 13px; }
.seo-brand-contact { display: inline-flex; align-items: center; justify-content: center; min-height: 36px; margin-top: 12px; padding: 0 14px; border: 1px solid rgba(0, 172, 235, .32); border-radius: 10px; background: linear-gradient(135deg, #00aceb, #3785d8); color: #fff; font-size: 13px; font-weight: 700; box-shadow: 0 8px 18px rgba(0, 172, 235, .16); transition: transform .16s ease, box-shadow .16s ease, filter .16s ease; }
.seo-brand-contact:hover { color: #fff; filter: brightness(1.04); box-shadow: 0 11px 24px rgba(0, 172, 235, .23); transform: translateY(-1px); }
.seo-brand-contact:focus-visible { outline: 3px solid rgba(0, 172, 235, .22); outline-offset: 3px; }
.seo-brand-contact:active { transform: translateY(0); }
.seo-image { min-height: 270px; display: grid; place-items: center; overflow: hidden; border: 1px solid rgba(111, 169, 220, .18); border-radius: 8px; background: #fff; }
.seo-image img { width: 100%; height: 100%; max-height: 420px; object-fit: contain; padding: 18px; }
.seo-image-empty { color: #7890a8; font-size: 14px; }
.seo-grid { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 22px; margin-top: 22px; }
.seo-section, .seo-side-card { border: 1px solid rgba(112, 168, 218, .24); border-radius: 8px; background: rgba(255,255,255,.82); box-shadow: 0 12px 28px rgba(42, 91, 143, .05); }
.seo-section { padding: 22px; }
.seo-section + .seo-section { margin-top: 18px; }
.seo-section h2, .seo-side-card h2 { margin: 0 0 15px; color: #183858; font-size: 18px; }
.seo-category + .seo-category { margin-top: 18px; }
.seo-category h3 { margin: 0 0 8px; color: #3678b7; font-size: 15px; }
.seo-table { width: 100%; border-collapse: collapse; overflow: hidden; }
.seo-table th, .seo-table td { padding: 10px 12px; border-top: 1px solid rgba(114, 152, 188, .14); text-align: left; vertical-align: top; font-size: 14px; line-height: 1.65; }
.seo-table th { width: 32%; color: #526b85; font-weight: 600; }
.seo-table td { color: #1e3856; overflow-wrap: anywhere; }
.seo-side { display: grid; align-content: start; gap: 18px; }
.seo-side-card { padding: 18px; }
.seo-related { display: grid; gap: 10px; }
.seo-related a { padding: 10px; border: 1px solid rgba(104, 165, 220, .18); border-radius: 6px; color: #276eae; font-size: 14px; background: rgba(238, 248, 255, .66); }
.seo-source { margin: 0; color: #607792; font-size: 13px; line-height: 1.75; }
.seo-back { display: inline-flex; margin-top: 18px; padding: 10px 15px; border-radius: 6px; background: #1976d2; color: #fff; font-size: 14px; font-weight: 700; }
.seo-footer { padding: 20px 0 32px; color: #6c8198; font-size: 12px; text-align: center; }
/* ===== Product page landing hint (homepage quick-locate, 2026-08-26) =====
   Landing on a single-product page from the homepage shows a brief blue
   glow on the product hero so the user knows exactly which model they
   arrived at, then settles back to the normal card look. */
.seo-hero {
  animation: seo-hero-landing 1.2s ease-out 1;
}
@keyframes seo-hero-landing {
  0% {
    border-color: rgba(25, 118, 210, .70);
    box-shadow: inset 0 0 0 2px rgba(25, 118, 210, .35), 0 18px 44px rgba(25, 118, 210, .18);
    background: rgba(238, 248, 255, .95);
  }
  100% {
    border-color: rgba(113, 169, 224, .30);
    box-shadow: 0 18px 44px rgba(38, 91, 144, .08);
    background: rgba(255, 255, 255, .78);
  }
}
@media (prefers-reduced-motion: reduce) {
  .seo-hero { animation: none; }
}
@media (max-width: 760px) { .seo-shell { width: min(100% - 28px, 680px); } .seo-nav-inner { min-height: 58px; align-items: flex-start; flex-direction: column; gap: 8px; padding: 13px 0; } .seo-nav-links { gap: 13px; font-size: 13px; } .seo-main { padding: 22px 0 38px; } .seo-hero, .seo-grid { grid-template-columns: 1fr; } .seo-hero { gap: 20px; padding: 22px; } .seo-image { min-height: 220px; max-height: 320px; } .seo-section { padding: 18px; } .seo-table th, .seo-table td { padding: 9px 8px; font-size: 13px; } }