:root{--seo-ink:#0d1718;--seo-muted:#526164;--seo-line:#dce3e2;--seo-accent:#0b8f83;--seo-soft:#f4f7f6}
*{box-sizing:border-box}
body{margin:0;background:#fff;color:var(--seo-ink);font-family:"Microsoft YaHei","PingFang SC",sans-serif;line-height:1.75}
a{color:inherit}
.seo-wrap{width:min(1120px,calc(100% - 40px));margin:0 auto}
.seo-header{border-bottom:1px solid var(--seo-line);background:#fff}
.seo-header .seo-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}
.seo-brand{display:flex;align-items:center;gap:12px;font-weight:700;text-decoration:none}
.seo-brand img{width:118px;height:auto}
.seo-nav{display:flex;flex-wrap:wrap;gap:14px 20px;font-size:14px}
.seo-nav a{text-decoration:none;color:var(--seo-muted)}
.seo-nav a:hover{color:var(--seo-accent)}
.seo-hero{padding:72px 0 56px;background:linear-gradient(135deg,#f4f8f7 0%,#ecf4f1 55%,#e3f1ed 100%)}
.seo-hero h1{max-width:900px;margin:0 0 20px;font-size:clamp(34px,5vw,58px);line-height:1.16;letter-spacing:0}
.seo-hero p{max-width:820px;margin:0;color:var(--seo-muted);font-size:18px}
.seo-kicker{margin:0 0 12px;color:var(--seo-accent);font-size:13px;font-weight:700;letter-spacing:.08em}
.seo-main{padding:48px 0 72px}
.seo-grid{display:grid;grid-template-columns:1.45fr .85fr;gap:36px;align-items:start}
.seo-content section{margin-bottom:38px}
.seo-content h2{margin:0 0 14px;font-size:28px;line-height:1.3}
.seo-content h3{margin:22px 0 8px;font-size:20px}
.seo-content p{margin:0 0 14px}
.seo-content ul{margin:12px 0;padding-left:22px;color:var(--seo-muted)}
.seo-content li{margin:6px 0}
.seo-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;padding:0;list-style:none}
.seo-list li{padding:16px 18px;border:1px solid var(--seo-line);border-radius:8px;background:#fff}
.seo-list strong{display:block;color:var(--seo-ink)}
.seo-aside{position:sticky;top:24px;display:grid;gap:18px}
.seo-box{padding:22px;border:1px solid var(--seo-line);border-radius:8px;background:var(--seo-soft)}
.seo-box h2{margin:0 0 12px;font-size:20px}
.seo-box ul{margin:0;padding-left:20px;color:var(--seo-muted)}
.seo-contact{display:block;margin-top:18px;padding:18px;border-radius:8px;background:var(--seo-ink);color:#fff;text-decoration:none}
.seo-contact strong{display:block;font-size:20px}
.seo-links{display:grid;gap:10px}
.seo-links a{padding:12px 14px;border:1px solid var(--seo-line);border-radius:8px;text-decoration:none;background:#fff}
.seo-links a:hover{border-color:var(--seo-accent);color:var(--seo-accent)}
.seo-footer{padding:30px 0;border-top:1px solid var(--seo-line);color:var(--seo-muted);font-size:14px}
.seo-footer strong{color:var(--seo-ink)}
.seo-solutions__hub{margin:24px 0 0;text-align:center}
.seo-solutions__hub a{color:var(--seo-accent);font-weight:700}
.seo-breadcrumbs{margin:0 0 18px;color:var(--seo-muted);font-size:14px}
.seo-breadcrumbs a{text-decoration:none}
@media(max-width:840px){.seo-grid{grid-template-columns:1fr}.seo-aside{position:static}.seo-list{grid-template-columns:1fr}.seo-header .seo-wrap{align-items:flex-start;flex-direction:column;padding:16px 0}.seo-hero{padding:52px 0 40px}}

.seo-solutions{padding-top:72px;padding-bottom:72px}
.seo-solution-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.seo-solution-card{display:flex;min-height:230px;flex-direction:column;padding:24px;border:1px solid rgba(16,23,24,.12);border-radius:8px;background:#fff}
.seo-solution-card>span{color:#0b8f83;font-size:13px;font-weight:700}
.seo-solution-card h3{margin:18px 0 10px;font-size:21px}
.seo-solution-card p{margin:0 0 20px;color:#526164}
.seo-solution-card a{margin-top:auto;color:#0b8f83;font-weight:700;text-decoration:none}
.seo-solutions__hub{margin:28px 0 0;text-align:center}
.seo-solutions__hub a{color:#0b8f83;font-weight:700}
@media(max-width:900px){.seo-solution-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){.seo-solution-grid{grid-template-columns:1fr}.seo-solution-card{min-height:0}}