:root{
  --steel:#0f4c81;
  --steel-d:#0a3459;
  --steel-l:#2a6aa0;
  --amber:#e8b04b;
  --ink:#1a2433;
  --gray:#5b6b7b;
  --bg:#ffffff;
  --bg-2:#f4f7fa;
  --line:#e2e8ef;
  --ok:#1c9d57;
  --radius:14px;
  --maxw:1180px;
  --shadow:0 8px 30px rgba(15,76,129,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);line-height:1.65;background:var(--bg)}
a{color:var(--steel);text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
h1,h2,h3{line-height:1.2;font-weight:700;color:var(--steel-d)}
h2{font-size:clamp(24px,3.2vw,34px);margin-bottom:10px}
h3{font-size:19px;margin-bottom:8px}
p{margin-bottom:14px}
.muted{color:var(--gray)}
.lead{font-size:18px;color:var(--gray);max-width:760px}

/* Buttons */
.btn{display:inline-block;padding:13px 26px;border-radius:999px;font-weight:600;transition:.2s;cursor:pointer;border:2px solid transparent}
.btn-primary{background:var(--amber);color:#1a1300}
.btn-primary:hover{background:#f0c163;transform:translateY(-1px)}
.btn-steel{background:var(--steel);color:#fff}
.btn-steel:hover{background:var(--steel-d)}
.btn-outline{border-color:var(--steel);color:var(--steel)}
.btn-outline:hover{background:var(--steel);color:#fff}

/* Header */
header.site{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-weight:800;font-size:22px;letter-spacing:.5px;color:var(--steel-d)}
.logo span{color:var(--amber)}
.nav ul{display:flex;gap:26px;list-style:none;align-items:center}
.nav a{font-weight:500;color:var(--ink)}
.nav a:hover{color:var(--steel)}
.nav .btn{padding:9px 18px}
.menu-btn{display:none;background:none;border:none;font-size:26px;cursor:pointer}

/* Hero */
.hero{background:linear-gradient(135deg,var(--steel-d),var(--steel-l));color:#fff;padding:72px 0 64px}
.hero h1{color:#fff;font-size:clamp(30px,4.6vw,52px);margin-bottom:16px}
.hero p{color:#d7e6f4;font-size:18px;max-width:640px;margin-bottom:26px}
.hero .btns{display:flex;gap:14px;flex-wrap:wrap}
.hero .badge{display:inline-block;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);padding:6px 14px;border-radius:999px;font-size:13px;margin-bottom:18px}

/* Stat strip */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;background:var(--bg-2);border-radius:var(--radius);padding:26px;margin:-36px auto 0;max-width:var(--maxw);position:relative;z-index:2;box-shadow:var(--shadow)}
.stat{text-align:center}
.stat b{display:block;font-size:30px;color:var(--steel);font-weight:800}
.stat span{font-size:13px;color:var(--gray)}

/* Sections */
section{padding:64px 0}
.section-bg{background:var(--bg-2)}
.eyebrow{text-transform:uppercase;letter-spacing:2px;font-size:12px;font-weight:700;color:var(--amber);margin-bottom:8px}
.center{text-align:center}

/* Cert bar */
.certbar{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:24px}
.cert{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 18px;font-weight:600;font-size:14px;color:var(--steel-d);box-shadow:var(--shadow)}

/* Status mood badge */
.status-badge{display:inline-block;margin:8px auto 0;padding:6px 14px;border-radius:999px;font-size:13px;font-weight:700;border:1px solid transparent}
.status-green{background:#e6f7ec;color:#1c9d57;border-color:#bfe9cd}
.status-yellow{background:#fff7e0;color:#b07d00;border-color:#ffe6a3}
.status-blue{background:#e8f1fb;color:#1f6fb8;border-color:#c4ddf4}
.status-gray{background:#eef1f4;color:#6b7785;border-color:#dde3e9}

/* Story block */
.story{max-width:760px;margin:0 auto;background:var(--bg-2);border-left:4px solid var(--amber);border-radius:var(--radius);padding:26px 30px}
.story-quote{font-size:19px;line-height:1.7;color:var(--ink)}

/* Product grid */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.2s}
.card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.card .ph{aspect-ratio:4/3;background:linear-gradient(135deg,#dfeaf3,#c2d6e8);display:flex;align-items:center;justify-content:center;color:#fff}
.card .body{padding:18px}
.card h3{color:var(--steel-d)}
.tag{display:inline-block;font-size:12px;background:var(--bg-2);color:var(--steel);padding:3px 10px;border-radius:999px;margin-bottom:8px}

/* Features */
.feature{display:flex;gap:16px;align-items:flex-start}
.feature .ic{flex:0 0 46px;height:46px;border-radius:12px;background:var(--steel);color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px}
.feature h3{margin-bottom:4px}

/* Process */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:s}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;position:relative}
.step::before{counter-increment:s;content:"0" counter(s);font-size:30px;font-weight:800;color:var(--amber);display:block;margin-bottom:8px}

/* CTA */
.cta{background:linear-gradient(135deg,var(--steel),var(--steel-l));color:#fff;border-radius:var(--radius);padding:44px;text-align:center}
.cta h2{color:#fff}
.cta p{color:#d7e6f4}

/* Form */
.form-wrap{max-width:620px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.field{margin-bottom:16px}
.field label{display:block;font-weight:600;margin-bottom:6px;font-size:14px}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font-size:15px;font-family:inherit}
.field textarea{min-height:120px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:16px}

/* Blog */
.post{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:0;overflow:hidden}
.post .body{padding:20px}
.post .meta{font-size:13px;color:var(--gray);margin-bottom:6px}
.post h3 a{color:var(--steel-d)}

/* Footer */
footer.site{background:var(--steel-d);color:#cfe0f0;padding:48px 0 28px}
footer.site h4{color:#fff;margin-bottom:14px;font-size:16px}
footer.site a{color:#cfe0f0}
footer.site a:hover{color:#fff}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px}
.foot-bottom{border-top:1px solid rgba(255,255,255,.15);margin-top:30px;padding-top:18px;font-size:13px;color:#9fb8d0}

/* Breadcrumb */
.crumb{font-size:13px;color:var(--gray);padding:16px 0}
.crumb a{color:var(--steel)}

/* Article */
.article{max-width:820px;margin:0 auto}
.article h1{font-size:clamp(26px,3.4vw,38px);margin:10px 0 8px}
.article h2{font-size:24px;margin:30px 0 10px}
.article p{font-size:17px}
.article ul,.article ol{margin:0 0 16px 22px}
.article li{margin-bottom:8px}

/* Emergency / ICE card (outdoor) */
.ice-card{background:linear-gradient(135deg,#fff4f4,#fff);border:1.5px solid #f0b4b4;border-radius:14px;padding:14px 18px;margin:14px auto 0;max-width:420px;text-align:left}
.ice-row{display:flex;justify-content:space-between;gap:12px;padding:6px 0;border-bottom:1px dashed #f0d0d0;font-size:15px}
.ice-row:last-child{border-bottom:0}
.ice-row span{color:#b4453f;font-weight:600}
.ice-row b{color:var(--ink);text-align:right}
#iceNdef{width:100%;border:1px solid var(--line);border-radius:10px;padding:10px;background:var(--bg-2);color:var(--ink)}

/* Compatibility / 破冰配对 card */
.match-card{background:linear-gradient(135deg,#fff,#eef4ff);border:1px solid var(--line);border-radius:16px;padding:18px;margin:16px 0;text-align:left}
.match-card h4{margin:0 0 12px;font-size:16px;color:var(--steel-d)}
.match-row{display:flex;align-items:center;gap:10px;margin:10px 0 4px;font-size:14px;font-weight:600}
.match-bar{flex:1;height:8px;border-radius:6px;background:#e6ebf2;overflow:hidden}
.match-bar > i{display:block;height:100%;background:linear-gradient(90deg,var(--steel),var(--steel-l));border-radius:6px}

@media(max-width:900px){
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .nav ul{display:none}
  .menu-btn{display:block}
  .grid-3,.grid-2,.two{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .hero{padding:54px 0 48px}
  .nav ul.open{display:flex;flex-direction:column;position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:18px 20px;gap:16px;box-shadow:var(--shadow)}
}
/* Owner password gate modal */
.modal-mask{position:fixed;inset:0;background:rgba(15,23,32,.55);display:none;align-items:center;justify-content:center;z-index:50;padding:20px}
.modal-mask.show{display:flex}
.modal{background:#fff;border-radius:16px;max-width:360px;width:100%;padding:24px;box-shadow:0 20px 60px rgba(0,0,0,.28)}
.modal h3{margin:0 0 4px}
.modal .field input{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font-size:15px}
.modal .btn{margin:0}