/* ============================================================
   泓宇卓科技企业官网 · 设计系统
   ============================================================ */
:root{
  --c-primary:#0A4D7A;        /* 品牌深蓝 */
  --c-primary-dark:#073A5C;
  --c-accent:#00A8E8;          /* 科技青 */
  --c-cta:#FF6B35;             /* 行动橙 */
  --c-cta-dark:#E55A28;
  --c-ink:#1A1F2E;             /* 深色文字 */
  --c-ink-soft:#4A5568;
  --c-line:#E4E8EE;
  --c-bg:#F8F7F4;              /* 浅背景 */
  --c-bg-alt:#FFFFFF;
  --c-success:#059669;
  --c-warning:#D97706;
  --radius:10px;
  --radius-sm:6px;
  --shadow:0 4px 20px rgba(10,77,122,.08);
  --shadow-lg:0 12px 40px rgba(10,77,122,.14);
  --container:1200px;
  --ff:"Inter","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--ff);color:var(--c-ink);background:var(--c-bg-alt);line-height:1.7;font-size:16px;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .2s}
a:hover{color:var(--c-accent)}
ul{list-style:none}
h1,h2,h3,h4{line-height:1.25;font-weight:700;color:var(--c-ink)}
h1{font-size:clamp(2rem,5vw,3.2rem)}
h2{font-size:clamp(1.6rem,3.5vw,2.4rem)}
h3{font-size:1.3rem}
p{color:var(--c-ink-soft)}

/* layout */
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:72px 0}
.section--alt{background:var(--c-bg)}
.section--dark{background:var(--c-primary);color:#fff}
.section--dark h1,.section--dark h2,.section--dark h3{color:#fff}
.section--dark p{color:rgba(255,255,255,.82)}
.grid{display:grid;gap:28px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:900px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}
@media(min-width:600px)and(max-width:900px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}

/* section heading */
.s-head{max-width:720px;margin:0 auto 48px;text-align:center}
.s-head .eyebrow{display:inline-block;font-size:.8rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--c-accent);margin-bottom:12px}
.s-head p{margin-top:14px;font-size:1.05rem}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;border-radius:var(--radius-sm);font-weight:700;font-size:.98rem;border:2px solid transparent;cursor:pointer;transition:all .2s;white-space:nowrap}
.btn--primary{background:var(--c-cta);color:#fff}
.btn--primary:hover{background:var(--c-cta-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 20px rgba(255,107,53,.35)}
.btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.btn--ghost:hover{background:#fff;color:var(--c-primary);border-color:#fff}
.btn--outline{background:transparent;color:var(--c-primary);border-color:var(--c-primary)}
.btn--outline:hover{background:var(--c-primary);color:#fff}

/* header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--c-line);transition:box-shadow .2s}
.site-header.scrolled{box-shadow:var(--shadow)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.18rem;color:var(--c-primary)}
.brand .logo{width:38px;height:38px;border-radius:8px;background:linear-gradient(135deg,var(--c-primary),var(--c-accent));display:grid;place-items:center;color:#fff;font-size:1.1rem;font-weight:800}
.brand small{display:block;font-size:.62rem;font-weight:600;letter-spacing:.14em;color:var(--c-ink-soft);text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{color:var(--c-ink);font-weight:600;font-size:.95rem}
.nav-links a:hover{color:var(--c-primary)}
.nav-cta{display:flex;align-items:center;gap:14px}
.lang-switch{font-size:.85rem;font-weight:700;color:var(--c-ink-soft);border:1px solid var(--c-line);border-radius:20px;padding:5px 12px}
.lang-switch:hover{color:var(--c-primary);border-color:var(--c-primary)}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.burger span{width:24px;height:2px;background:var(--c-ink);border-radius:2px;transition:.3s}
@media(max-width:900px){
  .burger{display:flex}
  .nav-links{position:fixed;top:68px;left:0;right:0;background:#fff;flex-direction:column;gap:0;padding:0;border-top:1px solid var(--c-line);transform:translateY(-120%);transition:transform .3s;box-shadow:var(--shadow)}
  .nav-links.open{transform:translateY(0)}
  .nav-links a{padding:16px 24px;width:100%;border-bottom:1px solid var(--c-line)}
  .nav-cta .btn{display:none}
}

/* hero */
.hero{position:relative;background:linear-gradient(135deg,var(--c-primary-dark),var(--c-primary));color:#fff;padding:90px 0 80px;overflow:hidden}
.hero::after{content:"";position:absolute;right:-10%;top:-20%;width:50%;height:140%;background:radial-gradient(circle,rgba(0,168,232,.25),transparent 60%)}
.hero .container{position:relative;z-index:1}
.hero h1{color:#fff;max-width:760px}
.hero p{color:rgba(255,255,255,.85);font-size:1.15rem;max-width:620px;margin-top:18px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-top:32px}
.hero-badges{display:flex;gap:22px;flex-wrap:wrap;margin-top:38px}
.hero-badges .b{display:flex;align-items:center;gap:8px;font-size:.9rem;color:rgba(255,255,255,.9);font-weight:600}
.hero-badges .b::before{content:"✓";color:var(--c-accent);font-weight:800}

/* breadcrumb */
.crumb{font-size:.85rem;color:var(--c-ink-soft);padding:18px 0 0}
.crumb a{color:var(--c-ink-soft)}
.crumb span{margin:0 8px;color:var(--c-line)}

/* card */
.card{background:var(--c-bg-alt);border:1px solid var(--c-line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.card .ic{width:52px;height:52px;border-radius:12px;background:linear-gradient(135deg,var(--c-primary),var(--c-accent));display:grid;place-items:center;color:#fff;font-size:1.5rem;margin-bottom:18px}
.card h3{margin-bottom:10px}
.card p{font-size:.95rem}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
@media(max-width:760px){.stats{grid-template-columns:repeat(2,1fr)}}
.stat{text-align:center;padding:24px 12px}
.stat .num{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;color:var(--c-primary);line-height:1}
.stat .num span{color:var(--c-accent)}
.stat .lab{margin-top:8px;font-size:.92rem;color:var(--c-ink-soft);font-weight:600}

/* feature rows */
.feat{display:flex;gap:18px;align-items:flex-start}
.feat .ic{flex:0 0 44px;width:44px;height:44px;border-radius:50%;background:rgba(0,168,232,.12);color:var(--c-accent);display:grid;place-items:center;font-weight:800;font-size:1.1rem}
.feat h4{margin-bottom:4px}
.feat p{font-size:.92rem}

/* logo wall */
.logo-wall{display:flex;flex-wrap:wrap;gap:18px;justify-content:center;align-items:center}
.logo-chip{width:150px;height:64px;border:1px solid var(--c-line);border-radius:10px;display:grid;place-items:center;color:var(--c-ink-soft);font-weight:700;font-size:.85rem;background:#fff;opacity:.85}

/* CTA band */
.cta-band{background:linear-gradient(135deg,var(--c-cta),var(--c-cta-dark));color:#fff;border-radius:16px;padding:48px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-band h2{color:#fff;margin:0}
.cta-band p{color:rgba(255,255,255,.9);margin-top:8px}
@media(max-width:700px){.cta-band{padding:32px 24px}}

/* table */
.tbl{width:100%;border-collapse:collapse;font-size:.95rem}
.tbl th,.tbl td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--c-line)}
.tbl th{background:var(--c-bg);color:var(--c-ink);font-weight:700}
.tbl tr:hover td{background:#fafcff}

/* form */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media(max-width:680px){.form-grid{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-weight:600;font-size:.9rem;color:var(--c-ink)}
.field label .req{color:var(--c-cta)}
.field input,.field select,.field textarea{padding:12px 14px;border:1px solid var(--c-line);border-radius:var(--radius-sm);font:inherit;font-size:.95rem;background:#fff;transition:border-color .2s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(0,168,232,.15)}
.field .hint{font-size:.78rem;color:var(--c-ink-soft)}
.upload-zone{border:2px dashed var(--c-line);border-radius:var(--radius-sm);padding:28px;text-align:center;color:var(--c-ink-soft);cursor:pointer;transition:.2s}
.upload-zone:hover{border-color:var(--c-accent);color:var(--c-primary)}
.form-note{font-size:.82rem;color:var(--c-ink-soft);margin-top:14px}
.form-success{display:none;background:rgba(5,150,105,.1);border:1px solid var(--c-success);color:var(--c-success);border-radius:var(--radius-sm);padding:18px;margin-top:18px;font-weight:600}
.form-success.show{display:block}

/* footer */
.site-footer{background:var(--c-ink);color:#fff;padding:56px 0 24px}
.site-footer a{color:rgba(255,255,255,.7)}
.site-footer a:hover{color:#fff}
.f-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
@media(max-width:820px){.f-grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.f-grid{grid-template-columns:1fr}}
.f-col h4{color:#fff;font-size:1rem;margin-bottom:16px}
.f-col li{margin-bottom:10px;font-size:.9rem}
.f-col p{color:rgba(255,255,255,.7);font-size:.9rem}
.f-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:20px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;font-size:.82rem;color:rgba(255,255,255,.55);text-align:center}
.f-icp{font-size:.72rem;color:rgba(255,255,255,.5)}
.f-icp a{color:rgba(255,255,255,.62)}

/* reveal animation */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s,transform .6s}
.reveal.in{opacity:1;transform:none}

/* page hero (inner pages) */
.page-hero{background:linear-gradient(135deg,var(--c-primary-dark),var(--c-primary));color:#fff;padding:60px 0 50px}
.page-hero h1{color:#fff}
.page-hero p{color:rgba(255,255,255,.85);max-width:640px;margin-top:14px;font-size:1.08rem}

/* tag */
.tag{display:inline-block;font-size:.76rem;font-weight:700;padding:4px 10px;border-radius:20px;background:rgba(0,168,232,.12);color:var(--c-primary);margin:0 6px 6px 0}

/* utility */
.mt{margin-top:32px}.mt-sm{margin-top:16px}.center{text-align:center}
.text-cta{color:var(--c-cta);font-weight:700}
/* device gallery */
.device-gallery{display:grid;gap:24px}
.device-gallery.cols-3{grid-template-columns:repeat(3,1fr)}
.device-gallery.cols-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:900px){.device-gallery.cols-3,.device-gallery.cols-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.device-gallery.cols-3,.device-gallery.cols-4{grid-template-columns:1fr}}
.device-card{background:var(--c-bg-alt);border:1px solid var(--c-line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s}
.device-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.device-card .device-img{width:100%;aspect-ratio:4/3;object-fit:contain;background:#fff;border-bottom:1px solid var(--c-line);padding:12px}
.device-card .device-body{padding:16px 18px}
.device-card .device-body h4{font-size:1rem;margin-bottom:4px;color:var(--c-primary)}
.device-card .device-body p{font-size:.82rem;color:var(--c-ink-soft)}
.device-card .device-body .device-tag{display:inline-block;font-size:.72rem;font-weight:700;padding:2px 8px;border-radius:12px;background:rgba(0,168,232,.12);color:var(--c-primary);margin-bottom:8px}