:root{
  --blue:#448ce4;--blue-d:#2f6fc0;--blue-l:#eaf3fd;--navy:#0f2a4a;--ink:#1d2733;--mute:#5b6878;
  --line:#e3e9f1;--bg:#fff;--bg2:#f6f9fd;--r:14px;--max:1120px;
  --f:"PingFang SC","PingFang TC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--f);color:var(--ink);background:var(--bg);line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased}
img,video{max-width:100%;height:auto;display:block}
a{color:var(--blue-d)}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;background:#fff;padding:8px 12px;z-index:99}

/* header */
.hd{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--line)}
.hd .wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--navy);font-weight:700;letter-spacing:.3px}
.brand img{height:52px;width:auto}
.hd-r{display:flex;align-items:center;gap:8px}
.nav{display:flex;gap:2px;align-items:center}
.lang{display:inline-flex;align-items:center;gap:4px;border:1.5px solid var(--blue);color:var(--blue-d);background:#fff;text-decoration:none;font-weight:600;font-size:14px;padding:7px 12px;border-radius:99px;white-space:nowrap}
.lang:hover{background:var(--blue);color:#fff}
.nav a{color:var(--ink);text-decoration:none;font-size:15px;padding:8px 11px;border-radius:8px;white-space:nowrap}
.nav a:hover,.nav a[aria-current]{background:var(--blue-l);color:var(--blue-d)}
.menu-btn{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:8px 10px;font-size:15px;cursor:pointer;color:var(--ink)}
@media (max-width:900px){
  .menu-btn{display:block}
  .nav{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:10px 16px 16px;border-bottom:1px solid var(--line);box-shadow:0 10px 24px rgba(15,42,74,.08)}
  .nav.open{display:flex}
  .nav a{padding:12px}
}

/* hero */
.hero{position:relative;color:#fff;background:var(--navy);overflow:hidden}
.hero img.bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.42}
.hero .wrap{position:relative;padding:88px 20px 80px}
.hero h1{font-size:clamp(28px,5vw,48px);line-height:1.2;margin:0 0 14px;letter-spacing:.2px}
.hero p{font-size:clamp(16px,2.2vw,19px);max-width:760px;margin:0 0 26px;opacity:.95}
.hero .kicker{display:inline-block;font-size:13px;letter-spacing:1.5px;text-transform:uppercase;background:rgba(255,255,255,.14);padding:5px 12px;border-radius:99px;margin-bottom:16px}
.hero.sm .wrap{padding:60px 20px 54px}

/* buttons */
.btns{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--blue);color:#fff;text-decoration:none;font-weight:600;padding:12px 22px;border-radius:10px;border:0;font-size:16px;cursor:pointer;font-family:inherit}
.btn:hover{background:var(--blue-d)}
.btn.ghost{background:transparent;border:1.5px solid currentColor;color:inherit}
.btn.wa{background:#1fa855}.btn.wa:hover{background:#178a45}
.btn.wx{background:#07c160}.btn.wx:hover{background:#06a152}
.btn.lite{background:#fff;color:var(--navy)}

/* sections */
section.s{padding:64px 0}
section.alt{background:var(--bg2)}
.s h2{font-size:clamp(22px,3.2vw,30px);line-height:1.3;color:var(--navy);margin:0 0 14px}
.s h3{font-size:20px;color:var(--navy);margin:28px 0 8px}
.lead{font-size:18px;color:var(--mute);max-width:820px}
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:820px){.g2,.g3{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px}
.card h3{margin-top:0}
.card.link{text-decoration:none;color:inherit;display:block;transition:box-shadow .2s,transform .2s}
.card.link:hover{box-shadow:0 12px 28px rgba(15,42,74,.10);transform:translateY(-2px)}
.card .img{border-radius:10px;overflow:hidden;margin:-8px -8px 16px;aspect-ratio:4/3;background:var(--bg2)}
.card .img img{width:100%;height:100%;object-fit:cover}
.tick{list-style:none;padding:0;margin:0}
.tick li{padding-left:28px;position:relative;margin:8px 0}
.tick li:before{content:"✓";position:absolute;left:0;top:0;color:var(--blue);font-weight:700}
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
@media (max-width:820px){.split{grid-template-columns:1fr}}
.rounded{border-radius:var(--r)}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:16px;margin-top:18px}
.stat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px}
.stat b{display:block;font-size:26px;color:var(--blue-d)}
.bi{display:grid;grid-template-columns:1fr 1fr;gap:28px}
@media (max-width:820px){.bi{grid-template-columns:1fr}}
.bi>div{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px 24px}
.bi h3{margin-top:0}
.tag{display:inline-block;font-size:12px;background:var(--blue-l);color:var(--blue-d);padding:3px 10px;border-radius:99px;margin-bottom:10px}

/* gallery */
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px}
.gallery img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:10px;border:1px solid var(--line);background:#fff}
.prod{display:grid;grid-template-columns:1fr 1fr;gap:40px}
@media (max-width:820px){.prod{grid-template-columns:1fr}}
.prod .main-img{border-radius:var(--r);border:1px solid var(--line);width:100%}
.thumbs{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin-top:10px}
.thumbs img{aspect-ratio:1/1;object-fit:cover;border-radius:8px;border:1px solid var(--line);cursor:pointer}
.crumbs{font-size:14px;color:var(--mute);margin-bottom:18px}
.crumbs a{color:var(--mute)}

/* article */
.article{max-width:760px;margin:0 auto}
.article h1{font-size:clamp(26px,4vw,38px);line-height:1.3;color:var(--navy);margin:0 0 10px}
.article .meta{color:var(--mute);font-size:14px;margin-bottom:28px}
.article p{margin:0 0 16px}
.article .en{background:var(--bg2);border-left:4px solid var(--blue);padding:16px 20px;border-radius:0 10px 10px 0;margin-top:26px}
.more{border-top:1px solid var(--line);margin-top:40px;padding-top:24px}

/* contact / cta */
.cta{background:linear-gradient(135deg,var(--navy),#1b4a82);color:#fff;border-radius:18px;padding:40px 36px}
.cta h2{color:#fff}
.cta p{opacity:.92}
form.f{display:grid;gap:14px}
form.f label{font-weight:600;font-size:14px;color:var(--navy)}
form.f input,form.f textarea{width:100%;font:inherit;padding:12px 14px;border:1px solid #cfd9e6;border-radius:10px;background:#fff;color:var(--ink)}
form.f input:focus,form.f textarea:focus{outline:2px solid var(--blue);border-color:transparent}
form.f textarea{min-height:130px;resize:vertical}
.hp{position:absolute;left:-9999px}

/* footer */
.ft{background:var(--navy);color:#c9d6e6;padding:48px 0 26px;font-size:15px}
.ft a{color:#fff;text-decoration:none}.ft a:hover{text-decoration:underline}
.ft .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}
@media (max-width:820px){.ft .cols{grid-template-columns:1fr 1fr}}
.ft h4{color:#fff;margin:0 0 10px;font-size:15px}
.ft ul{list-style:none;padding:0;margin:0}.ft li{margin:6px 0}
.ft .copy{border-top:1px solid rgba(255,255,255,.12);margin-top:30px;padding-top:18px;font-size:13px;opacity:.8}
.ft .logo{background:#fff;border-radius:10px;padding:8px 12px;display:inline-block;margin-bottom:12px}
.ft .logo img{height:40px;width:auto}

/* floating contact */
.float{position:fixed;right:16px;bottom:16px;z-index:60;display:flex;flex-direction:column;gap:10px}
.float a{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;color:#fff;text-decoration:none;font-weight:700;font-size:13px;box-shadow:0 6px 18px rgba(0,0,0,.18)}
.float .wa{background:#1fa855}.float .wx{background:#07c160}
.float svg{width:26px;height:26px;fill:#fff}