:root{--brand-red: #d0342c;--brand-red-dark: #b02a23;--accent-green: #1e5c3a;--ink: #191919;--ink-soft: #444a52;--ink-muted: #707680;--surface: #ffffff;--surface-alt: #f6f6f4;--surface-green: #edf3ee;--line: #e6e6e2;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;--maxw: 1120px;--gutter: 20px}*,*:before,*:after{box-sizing:border-box}body{margin:0;font-family:var(--font);font-size:16px;line-height:1.65;color:var(--ink);background:var(--surface);-webkit-font-smoothing:antialiased;overflow-x:hidden}html[lang=zh] body{line-height:1.8}img{max-width:100%;height:auto;display:block}a{color:inherit}h1,h2,h3{line-height:1.22;margin:0 0 .5em;font-weight:700}h1{font-size:clamp(28px,6.5vw,46px)}h2{font-size:clamp(22px,4vw,32px)}h3{font-size:18px}p{margin:0 0 1em}.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter)}section{padding:48px 0}.alt{background:var(--surface-alt)}.green-tint{background:var(--surface-green)}.center{text-align:center}.lede{font-size:17px;max-width:720px;color:var(--ink-soft)}.center .lede{margin-left:auto;margin-right:auto}.kicker{display:block;font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--brand-red-dark);margin-bottom:10px}.site-header{position:sticky;top:0;z-index:20;background:var(--surface);border-bottom:1px solid var(--line)}.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:60px}.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;min-width:0}.seal{flex:none;width:40px;height:40px;border-radius:9px;background:var(--brand-red);color:#fff;display:grid;place-items:center;font-size:15px;font-weight:700;line-height:1.1;text-align:center}.brand-name{display:flex;flex-direction:column;min-width:0}.brand-name 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var(--ink)}.btn-ghost:hover{background:var(--ink);color:#fff}.hero{padding:56px 0 48px}.hero h1{margin-bottom:14px}.hero .lede{font-size:18px;margin-bottom:26px}.hero-actions{display:flex;gap:10px;flex-wrap:wrap}.hero-actions .btn{flex:1 1 auto}.facts{display:flex;flex-wrap:wrap;gap:10px 28px;margin-top:30px}.fact{min-width:120px}.fact .n{font-size:22px;font-weight:700;color:var(--brand-red-dark)}.fact .l{font-size:13px;color:var(--ink-muted)}.grid{display:grid;gap:18px;grid-template-columns:1fr}.card{background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden;display:flex;flex-direction:column}.card-photo{aspect-ratio:4 / 3;background:var(--surface-alt);position:relative}.card-photo img{width:100%;height:100%;object-fit:cover}.photo-pending{position:absolute;inset:0;display:grid;place-items:center;color:var(--ink-muted);font-size:13px;text-align:center;padding:12px}.card-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:8px}.card-body h3{margin:0}.card-body .app{color:var(--ink-soft);font-size:14.5px;margin:0}.card-body ul{margin:0;padding-left:18px;color:var(--ink-soft);font-size:14px}.card-body li{margin-bottom:3px}.spec-row{display:flex;flex-wrap:wrap;gap:6px;margin-top:auto;padding-top:10px}.tag{display:inline-flex;align-items:center;min-height:26px;padding:2px 12px;border-radius:999px;font-size:12.5px;font-weight:600}.tag-material{background:var(--surface-green);color:var(--accent-green)}.tag-size{background:var(--surface-alt);color:var(--ink-soft);border:1px solid var(--line)}.cap{padding:20px 0 4px;border-top:3px solid var(--brand-red)}.cap h3{margin-bottom:6px}.cap p{color:var(--ink-soft);font-size:15px}.oem{background:var(--accent-green);color:#fff}.oem .lede{color:#dbe7dd}.oem .kicker{color:#f2c9c5}.oem-points{display:grid;gap:14px;margin:22px 0 26px;padding:0;list-style:none}.oem-points li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px}.oem-points 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.btn{justify-self:start}.form-note{font-size:13px;color:var(--ink-muted);margin:0}.contact-block a{color:var(--brand-red-dark);font-weight:600;text-decoration:none}.contact-block a:hover{text-decoration:underline}.site-footer{background:var(--ink);color:#cfcfcb;padding:36px 0 44px;font-size:14px}.site-footer a{color:#fff;text-decoration:none}.site-footer a:hover{text-decoration:underline}.footer-grid{display:grid;gap:6px}.footer-legal{margin-top:14px;font-size:12.5px;color:#8f8f8a}@media(min-width:700px){section{padding:72px 0}.hero{padding:88px 0 72px}.hero .wrap{max-width:860px}.hero-actions .btn{flex:0 0 auto}.grid-2{grid-template-columns:repeat(2,1fr)}.grid{gap:24px}.brand-name .en{font-size:18px}.site-header .wrap{min-height:72px}.lede{font-size:19px}.footer-grid{grid-template-columns:1fr auto;align-items:start}}@media(min-width:1000px){.grid-4{grid-template-columns:repeat(4,1fr)}.grid-2-wide{grid-template-columns:repeat(2,1fr)}}@media(max-width:699px){.header-actions 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