/* HBWNH — 明亮 B2B 设计系统 */
:root{
  --ink:#0F2233; --body:#41556B; --muted:#7890A6;
  --navy:#12395F; --navy-d:#0B2947;
  --accent:#E4701E; --accent-d:#C85E12;
  --bg:#FFFFFF; --soft:#F5F8FB; --soft2:#EDF3F8;
  --line:#E2E9F0; --line2:#D3DEE9;
  --radius:14px; --radius-s:10px;
  --shadow:0 1px 2px rgba(15,34,51,.04),0 8px 24px -12px rgba(15,34,51,.14);
  --shadow-h:0 2px 4px rgba(15,34,51,.05),0 18px 40px -16px rgba(15,34,51,.22);
  --maxw:1180px;
  --f:"Inter","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--f);color:var(--body);background:var(--bg);
  -webkit-font-smoothing:antialiased;line-height:1.6;font-size:16.5px}
h1,h2,h3,h4{color:var(--ink);margin:0;line-height:1.18;letter-spacing:-.02em;font-weight:700}
h1{font-size:clamp(2.1rem,4.4vw,3.5rem)}
h2{font-size:clamp(1.6rem,2.8vw,2.3rem)}
h3{font-size:1.12rem;letter-spacing:-.01em}
p{margin:0}
a{color:var(--navy);text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.sec{padding:clamp(56px,7vw,96px) 0}
.sec--soft{background:var(--soft)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.78rem;font-weight:700;
  letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);display:block}
.lead{font-size:1.08rem;max-width:62ch}
.sec-head{max-width:760px;margin-bottom:clamp(32px,4vw,52px)}
.sec-head h2{margin:14px 0 14px}

/* ——— header ——— */
.hd{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(1.6) blur(12px);border-bottom:1px solid var(--line)}
.hd-in{display:flex;align-items:center;justify-content:space-between;height:70px;gap:18px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);
  letter-spacing:-.02em;font-size:1.05rem;white-space:nowrap}
.logo-mark{width:34px;height:34px;border-radius:9px;background:var(--navy);color:#fff;
  display:grid;place-items:center;font-size:.9rem;font-weight:800;letter-spacing:-.03em}
.logo small{display:block;font-size:.66rem;font-weight:600;color:var(--muted);letter-spacing:.08em;text-transform:uppercase}
.nav{display:flex;align-items:center;gap:26px}
.nav a{font-size:.94rem;font-weight:600;color:var(--body);padding:6px 0;position:relative}
.nav a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--accent);transition:right .25s}
.nav a:hover{color:var(--ink)}
.nav a:hover::after{right:0}
.nav a.on{color:var(--ink)}
.nav a.on::after{right:0}
.hd-act{display:flex;align-items:center;gap:10px}
.lang{display:flex;border:1px solid var(--line2);border-radius:8px;overflow:hidden;font-size:.82rem;font-weight:700}
.lang a{padding:5px 10px;color:var(--muted)}
.lang a.on{background:var(--navy);color:#fff}
.burger{display:none;width:40px;height:40px;border:1px solid var(--line2);background:#fff;
  border-radius:9px;cursor:pointer;align-items:center;justify-content:center}
.burger span{display:block;width:17px;height:2px;background:var(--ink);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:17px;height:2px;background:var(--ink)}
.burger span::before{top:-5px}.burger span::after{top:5px}

/* ——— buttons ——— */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 22px;
  border-radius:10px;font-weight:700;font-size:.95rem;border:1px solid transparent;
  transition:transform .18s,box-shadow .18s,background .18s;cursor:pointer}
.btn-p{background:var(--accent);color:#fff;box-shadow:0 8px 20px -10px rgba(228,112,30,.75)}
.btn-p:hover{background:var(--accent-d);transform:translateY(-1px);box-shadow:0 14px 26px -12px rgba(228,112,30,.8)}
.btn-s{background:#fff;color:var(--navy);border-color:var(--line2)}
.btn-s:hover{border-color:var(--navy);transform:translateY(-1px)}
.btn-g{background:var(--navy);color:#fff}
.btn-g:hover{background:var(--navy-d);transform:translateY(-1px)}

/* ——— hero ——— */
.hero{position:relative;background:
   radial-gradient(1100px 520px at 82% -8%,#EAF2FA 0%,rgba(234,242,250,0) 62%),
   linear-gradient(180deg,#FBFDFF 0%,#FFFFFF 100%);
   border-bottom:1px solid var(--line);overflow:hidden}
.hero-in{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,5vw,64px);
  align-items:center;padding:clamp(48px,6vw,84px) 0 clamp(52px,6vw,88px)}
.hero h1{margin:18px 0 20px}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero .lead{font-size:1.1rem;color:var(--body)}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
.hero-note{display:flex;gap:22px;flex-wrap:wrap;margin-top:28px;padding-top:22px;border-top:1px solid var(--line);
  font-size:.86rem;color:var(--muted);font-weight:600}
.hero-note b{color:var(--ink);font-weight:800}
.hero-media{position:relative}
.hero-media img{width:100%;border-radius:16px;box-shadow:var(--shadow-h);object-fit:cover;aspect-ratio:4/3}
.hero-badge{position:absolute;left:-14px;bottom:22px;background:#fff;border:1px solid var(--line);
  border-radius:12px;padding:12px 16px;box-shadow:var(--shadow);display:flex;gap:12px;align-items:center}
.hero-badge b{display:block;color:var(--ink);font-size:1.35rem;line-height:1}
.hero-badge span{font-size:.74rem;color:var(--muted);font-weight:600;letter-spacing:.04em;text-transform:uppercase}
.hero-badge i{width:34px;height:34px;border-radius:8px;background:#EAF2FA;display:grid;place-items:center;
  font-style:normal;color:var(--navy);font-weight:800;font-size:.95rem}

/* ——— stats strip ——— */
.stats{background:var(--navy);color:#fff}
.stats-in{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.14)}
.stat{background:var(--navy);padding:26px 22px}
.stat b{display:block;font-size:clamp(1.5rem,2.4vw,2rem);color:#fff;line-height:1.1;letter-spacing:-.02em}
.stat span{display:block;margin-top:6px;font-size:.82rem;color:#B9CCDE;font-weight:600;letter-spacing:.02em}

/* ——— cards / grids ——— */
.grid{display:grid;gap:20px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:transform .22s,box-shadow .22s,border-color .22s}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-h);border-color:var(--line2)}
.card-body{padding:20px 22px 24px}
.card-body p{font-size:.94rem;margin-top:8px}

/* app tiles */
.tile{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:4/3;display:block}
.tile img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.tile:hover img{transform:scale(1.04)}
.tile-shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(9,26,42,0) 35%,rgba(9,26,42,.78) 100%)}
.tile-t{position:absolute;left:18px;right:18px;bottom:16px;color:#fff}
.tile-t b{display:block;font-size:1rem;font-weight:700;letter-spacing:-.01em}
.tile-t span{font-size:.8rem;color:rgba(255,255,255,.78)}

/* product cards */
.pcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.22s}
.pcard:hover{box-shadow:var(--shadow-h);border-color:var(--line2);transform:translateY(-3px)}
.pcard-img{aspect-ratio:4/3;background:var(--soft2);overflow:hidden}
.pcard-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.pcard:hover .pcard-img img{transform:scale(1.05)}
.pcard-b{padding:16px 18px 20px}
.pcard-b h3{font-size:1rem}
.pcard-b p{font-size:.86rem;color:var(--muted);margin-top:6px}
.chip{display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;
  color:var(--navy);background:#EAF2FA;border-radius:6px;padding:4px 8px}

/* spec table */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table{width:100%;border-collapse:collapse;font-size:.92rem;min-width:640px}
thead th{background:var(--soft);color:var(--ink);font-weight:700;text-align:left;
  padding:14px 18px;border-bottom:1px solid var(--line);white-space:nowrap;font-size:.84rem;
  letter-spacing:.03em;text-transform:uppercase}
tbody td{padding:13px 18px;border-bottom:1px solid var(--line);color:var(--body)}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover td{background:#FAFCFE}
td b{color:var(--ink)}

/* feature rows */
.frow{display:grid;grid-template-columns:1fr 1fr;gap:clamp(26px,4vw,56px);align-items:center}
.frow img{border-radius:16px;box-shadow:var(--shadow);width:100%;object-fit:cover;aspect-ratio:16/11}
.flist{list-style:none;padding:0;margin:22px 0 0;display:grid;gap:14px}
.flist li{display:flex;gap:12px;font-size:.96rem;color:var(--body)}
.flist b{color:var(--ink)}
.flist .tick{flex:0 0 22px;height:22px;border-radius:50%;background:#EAF2FA;color:var(--navy);
  display:grid;place-items:center;font-size:.72rem;font-weight:800;margin-top:2px}

/* cert */
.cert-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.cert-grid img{border:1px solid var(--line);border-radius:12px;background:#fff;box-shadow:var(--shadow)}

/* cta band */
.cta{background:linear-gradient(135deg,var(--navy) 0%,#1B4C7A 100%);color:#fff;border-radius:18px;
  padding:clamp(32px,4.5vw,56px);display:grid;grid-template-columns:1.4fr .6fr;gap:26px;align-items:center}
.cta h2{color:#fff}
.cta p{color:#C6D8E8;margin-top:12px;max-width:56ch}
.cta .btn-p{justify-self:end}

/* footer */
.ft{background:#0C1D2E;color:#93A8BC;padding:56px 0 26px;font-size:.9rem}
.ft-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px}
.ft h4{color:#fff;font-size:.82rem;letter-spacing:.1em;text-transform:uppercase;margin-bottom:14px}
.ft a{color:#B9CCDE;display:block;padding:4px 0}
.ft a:hover{color:#fff}
.ft .logo{color:#fff}
.ft .logo small{color:#7C93A8}
.ft-bot{margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.82rem;color:#6E869B}
.ft .logo-mark{background:var(--accent)}

/* misc */
.kv{display:grid;grid-template-columns:auto 1fr;gap:10px 18px;font-size:.93rem;margin-top:16px}
.kv dt{color:var(--muted);font-weight:600}
.kv dd{margin:0;color:var(--ink);font-weight:600}
.badge-lite{display:inline-flex;align-items:center;gap:7px;background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:7px 14px;font-size:.82rem;font-weight:600;color:var(--navy)}
.badge-lite i{width:7px;height:7px;border-radius:50%;background:#2FA36B;font-style:normal}
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

@media (max-width:980px){
  .hero-in{grid-template-columns:1fr;gap:32px}
  .hero-media img{aspect-ratio:16/10}
  .stats-in{grid-template-columns:1fr 1fr}
  .g4{grid-template-columns:1fr 1fr}
  .g3{grid-template-columns:1fr 1fr}
  .frow{grid-template-columns:1fr}
  .cta{grid-template-columns:1fr}
  .cta .btn-p{justify-self:start}
  .ft-grid{grid-template-columns:1fr 1fr}
  .cert-grid{grid-template-columns:1fr}
}
@media (max-width:720px){
  .nav{display:none}
  .burger{display:flex}
  .hd-act .btn{display:none}
  .g3,.g2,.g4{grid-template-columns:1fr}
  .hero-badge{left:8px;bottom:8px;padding:10px 13px}
  .hero-badge b{font-size:1.1rem}
  .ft-grid{grid-template-columns:1fr}
  body{font-size:16px}
}
/* mobile nav drawer */
.mnav{display:none;border-top:1px solid var(--line);background:#fff}
.mnav.open{display:block}
.mnav a{display:block;padding:13px 24px;border-bottom:1px solid var(--line);font-weight:600;color:var(--ink)}