@font-face{font-family:"Figtree";src:url("../fonts/figtree.woff") format("woff");font-weight:100 900;font-style:normal;font-display:swap}
:root{
  --bg:#f3f5f8;--bg-2:#e6ebf1;--ink:#14181f;--muted:#566070;--line:#d3dae4;--card:#fff;
  --slate:#1f2f44;--slate-2:#142133;--accent:#1b6b7a;--accent-2:#145662;--ice:#eef2f7;
  --gold:#f5c518;--max:1180px;--radius:10px;
  --font:"Figtree","Segoe UI","Noto Sans CJK SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:17px;line-height:1.6;font-weight:430}
img{max-width:100%;height:auto;display:block}
figure{margin:0}
a{color:var(--accent);text-underline-offset:3px}
a:hover{color:var(--slate)}
h1,h2,h3{font-weight:700;letter-spacing:-.025em;line-height:1.15;margin:0 0 .55em;color:var(--slate-2)}
h1{font-size:clamp(2rem,4.2vw,3.2rem);font-weight:800}
h2{font-size:clamp(1.5rem,2.6vw,2.1rem)}
h3{font-size:1.2rem}
p{margin:0 0 1em}
.muted{color:var(--muted)}
.kicker{font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin:0 0 .7em}
.wrap{width:min(var(--max),calc(100% - 40px));margin-inline:auto}
.skip{position:absolute;left:-999px;top:8px;background:#fff;color:var(--ink);padding:8px 12px;z-index:80}.skip:focus{left:16px}

/* OEM bar — same gold strip as the other SG sites, no 满10送1 */
.oem-bar{background:var(--gold);color:#1a1400;border-bottom:1px solid #c9960a}
.oem-bar-link{display:flex;align-items:center;gap:10px;flex-wrap:nowrap;max-width:var(--max);margin:0 auto;padding:8px 16px;color:inherit;text-decoration:none;min-height:36px;box-sizing:border-box}
.oem-bar-kicker{flex:0 0 auto;font-weight:800;font-size:13px;letter-spacing:.04em;text-transform:uppercase;background:#1a1400;color:var(--gold);padding:4px 8px;border-radius:4px;line-height:1.2;white-space:nowrap}
.oem-bar-rest{flex:1 1 auto;font-size:13px;font-weight:650;line-height:1.3;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.oem-bar-cta{flex:0 0 auto;font-size:12px;font-weight:800;white-space:nowrap;text-decoration:underline;text-underline-offset:2px}
.oem-bar-link:hover .oem-bar-cta,.oem-bar-link:focus-visible .oem-bar-cta{color:#5a3b00}
.oem-bar-link:focus-visible{outline:2px solid #1a1400;outline-offset:2px}

.site-header{background:var(--slate-2);color:#eef2f7;position:sticky;top:0;z-index:40}
.site-header .bar{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;padding:4px 0}
.wordmark{color:#fff;text-decoration:none;font-size:1.12rem;font-weight:750;letter-spacing:-.02em;line-height:1.15}
.wordmark span{display:block;font-size:10px;font-weight:650;letter-spacing:.16em;text-transform:uppercase;color:#9fb0c6;margin-top:2px}
.site-header nav{display:flex;align-items:center;gap:4px 18px;flex-wrap:wrap}
.site-header nav a{color:#eef2f7;text-decoration:none;font-size:14px;font-weight:560;opacity:.9}
.site-header nav a:hover,.site-header nav a[aria-current="page"]{opacity:1;color:#fff}
.site-header nav a[aria-current="page"]{box-shadow:0 2px 0 var(--gold)}
.site-header .lang{opacity:.75;border-left:1px solid rgba(255,255,255,.22);padding-left:14px;margin-left:4px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 18px;border-radius:999px;font:inherit;font-size:14px;font-weight:700;text-decoration:none;border:1px solid transparent;cursor:pointer;line-height:1.2}
.site-header nav a.btn-light{background:#fff;color:var(--slate-2);opacity:1}
.btn-wa{background:#128c4b;color:#fff}.btn-wa:hover{background:#0e733d;color:#fff}
.btn-ghost{background:#fff;color:var(--slate-2);border-color:var(--line)}.btn-ghost:hover{border-color:var(--slate);color:var(--slate-2)}
.btn-gold{background:var(--gold);color:#1a1400}.btn-gold:hover{background:#e0b10e;color:#1a1400}
.nav-toggle{display:none;background:transparent;border:1px solid rgba(255,255,255,.35);color:#fff;padding:8px 12px;border-radius:999px;font:inherit;font-size:13px}

.hero{padding:28px 0 10px}
.hero h1{font-size:clamp(1.7rem,3.4vw,2.6rem);margin-bottom:.35em;max-width:46rem}
.hero .lead{font-size:1.06rem;color:var(--muted);max-width:42rem;margin:0}
.board{padding:18px 0 8px}
.board-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:12px;flex-wrap:wrap}
.board-head h2{margin:0}.board-head p{margin:0;color:var(--muted);font-size:15px}
.tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.tile{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);text-decoration:none;color:inherit;overflow:hidden;transition:border-color .15s,transform .15s,box-shadow .15s}
.tile:hover{border-color:var(--slate);color:inherit;transform:translateY(-2px);box-shadow:0 10px 24px rgba(20,33,51,.1)}
.tile .visual{background:linear-gradient(180deg,#eaf0f7,#f8fafc);aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;overflow:hidden}
.tile .visual img{width:100%;height:100%;object-fit:contain;object-position:center}
.tile .caption{padding:11px 14px 14px;border-top:1px solid var(--line)}
.tile .caption strong{display:block;font-size:16px;font-weight:700;color:var(--slate-2)}
.tile .caption span{display:block;font-size:13.5px;color:var(--muted);margin-top:2px}
.tile.typo .visual{aspect-ratio:4/3;align-items:center;justify-content:center;background:var(--slate)}
.tile.typo.alt .visual{background:var(--accent-2)}
.tile.typo .nm{font-size:clamp(1.5rem,3.2vw,2.1rem);font-weight:800;letter-spacing:-.03em;line-height:1.15;color:#fff;text-align:center;padding:12px}
.tile.typo .nm small{display:block;font-size:.42em;letter-spacing:.12em;text-transform:uppercase;opacity:.8;margin-top:.55em;font-weight:700}

.prose{padding:28px 0 16px}
.prose .lead{color:var(--muted);max-width:44rem}
.crumbs{padding:18px 0 0;font-size:13px;color:var(--muted)}.crumbs a{color:var(--muted);text-decoration:none}.crumbs a:hover{color:var(--accent)}
.crumbs ol{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:6px}.crumbs li:not(:last-child)::after{content:"/";margin-left:6px;opacity:.6}
.page-hero{padding:16px 0 6px}.page-hero .lead{font-size:1.1rem;color:var(--muted);max-width:44rem}
.cta-row{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0 8px}
.mhero{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:36px;align-items:center;padding:14px 0 26px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 0;padding:0;list-style:none}
.chips li{background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 14px;font-size:14px;font-weight:600;color:var(--slate)}
.stage{background:linear-gradient(180deg,#e9eff6,#f9fbfd);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.stage img{width:100%;max-height:640px;object-fit:contain;margin-inline:auto}
.stage figcaption{padding:10px 14px;font-size:13px;color:var(--muted);background:#fff;border-top:1px solid var(--line)}
.section{padding:34px 0}
.section.alt{background:#fff;border-block:1px solid var(--line)}
.section h2{max-width:40rem}
.section .lead{color:var(--muted);max-width:42rem}
.features{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:8px 0 0;padding:0;list-style:none}
.features li{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.features li strong{display:block;margin-bottom:.35em;color:var(--slate-2)}
.specs{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.specs th,.specs td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.specs tr:last-child th,.specs tr:last-child td{border-bottom:0}
.specs th{width:38%;color:var(--muted);font-weight:650}
.faq details{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin:0 0 8px}
.faq summary{cursor:pointer;font-weight:700;color:var(--slate-2)}
.faq details p{margin:.6em 0 0}
.oem-prose p{max-width:46rem}
.oem-prose .oem-lead{font-size:1.15rem;font-weight:700;line-height:1.4;margin:.4em 0 1em}
.note{font-size:14px;color:var(--muted);max-width:44rem}

.site-footer{background:var(--slate-2);color:#d9e1ec;padding:36px 0 26px;font-size:14px}
.site-footer a{color:#fff}
.site-footer .grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px}
.site-footer .foot-title{font-size:1.1rem;font-weight:700;margin:0 0 10px;color:#fff}
.site-footer ul{list-style:none;margin:0;padding:0}.site-footer li{margin:0 0 6px}
.site-footer .fine{opacity:.7;margin-top:26px;border-top:1px solid rgba(255,255,255,.14);padding-top:16px}

@media (max-width:960px){
  .tiles{grid-template-columns:1fr}
  .mhero,.site-footer .grid,.features{grid-template-columns:1fr}
}
@media (max-width:720px){
  .wrap{width:min(var(--max),calc(100% - 28px))}
  .nav-toggle{display:inline-flex}
  .site-header nav{display:none;flex-direction:column;align-items:flex-start;width:100%;padding:0 0 16px}
  .site-header.is-open nav{display:flex}
  .site-header .bar{flex-wrap:wrap;padding-top:8px}
  .site-header .lang{border:0;padding:0;margin:0}
  .oem-bar-rest{display:none}
  .oem-bar-link{padding:7px 12px;min-height:34px}
  .oem-bar-kicker{font-size:12px}
  body{font-size:16px}
}
@media (max-width:420px){
  .tiles{grid-template-columns:1fr}
}
.store-also{margin:1em 0 0;font-size:15px}