:root{--navy:#0b2a4a;--blue:#14558f;--accent:#e8862e;--bg:#f4f6f9;--ink:#1d2b3a;--mut:#5b6b7f}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.7}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.site-header{background:var(--navy);color:#fff;position:sticky;top:0;z-index:50}
.header-in{display:flex;align-items:center;gap:18px;padding:12px 20px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none}
.brand-mark{background:var(--accent);color:#fff;font-weight:800;border-radius:8px;padding:6px 10px;font-size:18px}
.brand-text strong{display:block;font-size:15px;line-height:1.3}
.brand-text small{color:#bcd;font-size:11px}
nav ul{display:flex;gap:4px;list-style:none;margin-left:8px}
nav a{color:#dbe7f3;text-decoration:none;padding:8px 12px;border-radius:6px;font-size:14px}
nav a.active,nav a:hover{background:rgba(255,255,255,.14);color:#fff}
.lang-sw{margin-left:auto;color:#fff;border:1px solid rgba(255,255,255,.4);border-radius:6px;padding:6px 12px;text-decoration:none;font-size:13px}
.hero{background:linear-gradient(135deg,var(--navy),var(--blue));color:#fff;padding:64px 0;text-align:center}
.hero h1{font-size:32px;margin-bottom:6px}
.hero .sub{color:var(--accent);font-size:15px;margin-bottom:14px}
.hero-desc{color:#dbe7f3;margin-bottom:24px}
.cta-row{display:flex;gap:12px;justify-content:center}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:12px 28px;border-radius:8px;text-decoration:none;font-weight:700}
.btn.ghost{background:transparent;border:2px solid #fff}
.btn.small{padding:8px 18px;font-size:14px}
.cats{padding:48px 20px}.cats h2,.why h2{text-align:center;margin-bottom:24px;font-size:24px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{border:1px solid #e2e8f0;border-radius:12px;padding:24px 16px;text-align:center;text-decoration:none;color:var(--ink);background:#fff;transition:.2s}
.card:hover{box-shadow:0 8px 24px rgba(11,42,74,.12);transform:translateY(-2px)}
.card .icon{font-size:40px;margin-bottom:10px}
.card h3{font-size:16px;margin-bottom:6px}
.card p{color:var(--mut);font-size:13px}
.why{background:var(--bg);padding:48px 0}
.ticks{list-style:none;max-width:720px;margin:0 auto}
.ticks li{background:#fff;border-radius:10px;padding:14px 18px;margin-bottom:12px;box-shadow:0 2px 8px rgba(0,0,0,.05)}
.cta-band{text-align:center;padding:48px 20px}
.cta-band .btn{margin-top:12px}
.site-footer{background:var(--navy);color:#cdd9e5;margin-top:32px}
.foot-in{display:flex;justify-content:space-between;gap:20px;padding:32px 20px;flex-wrap:wrap}
.foot-in a{color:#fff}
.copyright{text-align:center;padding:14px;font-size:12px;color:#8fa3b8;border-top:1px solid rgba(255,255,255,.12)}
main h1{font-size:28px;margin:32px 0 12px}
.lede{color:var(--mut);margin-bottom:28px}
.narrow{max-width:760px}
.prod{display:flex;gap:24px;background:#fff;border:1px solid #e2e8f0;border-radius:14px;padding:24px;margin-bottom:20px}
.prod-img{min-width:200px;height:160px;border-radius:10px;background:linear-gradient(135deg,#dfe9f3,#f4f6f9);display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:52px;color:var(--blue)}
.prod-img span{font-size:12px;color:var(--mut);margin-top:8px}
.prod h2{font-size:20px;margin-bottom:4px}
.en-tag{color:var(--accent);font-size:13px;margin-bottom:10px}
.prod ul{margin:10px 0 0 20px;color:var(--mut)}
.contact-card{background:var(--bg);border-radius:12px;padding:24px;margin:16px 0}
.contact-card p{margin-bottom:10px}
.prod-layout{display:flex;gap:28px;align-items:flex-start}
.side-nav{width:250px;flex-shrink:0;position:sticky;top:78px;background:var(--bg);border-radius:12px;padding:18px}
.side-nav h3{font-size:15px;margin-bottom:12px}
.side-nav ul{list-style:none}
.side-nav li{margin-bottom:4px}
.side-nav li a{display:flex;gap:10px;align-items:center;padding:10px 12px;border-radius:8px;text-decoration:none;color:var(--ink);font-size:14px}
.side-nav li a:hover{background:#e2eaf4}
.side-nav li a.active{background:var(--navy);color:#fff}
.side-nav li a span{font-size:18px}
.side-contact{margin-top:14px;padding-top:14px;border-top:1px solid #dde4ec;font-size:13px;color:var(--mut);line-height:1.9}
.side-contact a{color:var(--blue)}
.prod-main{flex:1;min-width:0}
.prod-main h2{font-size:22px;margin:0 0 4px}
.prod-main h3{font-size:16px;margin:20px 0 8px}
.icon-inline{margin-right:8px}
.model-chips{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 4px}
.model-chips span{background:#eef3f9;border:1px solid #d7e2ef;border-radius:20px;padding:4px 14px;font-size:13px}
.photo-note{color:var(--mut);font-size:13px;margin-top:10px}
@media(max-width:720px){.grid4{grid-template-columns:repeat(2,1fr)}.grid3{grid-template-columns:repeat(2,1fr)}.prod{flex-direction:column}.hero h1{font-size:24px}nav ul{flex-wrap:wrap}.prod-layout{flex-direction:column}.side-nav{width:100%;position:static}.side-nav ul{display:flex;overflow-x:auto;gap:8px;padding-bottom:4px}.side-nav li{flex-shrink:0}.side-nav .side-contact{display:none}}