/* ===========================
   Zllink - 上海智灵联科技
   Main Stylesheet
   =========================== */

/* ---- Reset & Base ---- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;line-height:1.7;color:#2b2b2b;background:#fff;overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}

/* ---- CSS Variables ---- */
:root{
  --primary:#0b5cab;
  --primary-dark:#073d75;
  --primary-light:#e8f1fb;
  --accent:#00a3a8;
  --accent-dark:#007a7e;
  --text:#2b2b2b;
  --text-light:#5d6b7a;
  --text-muted:#8a96a3;
  --bg:#ffffff;
  --bg-soft:#f5f8fb;
  --bg-dark:#0c1f38;
  --border:#e2e8f0;
  --shadow:0 4px 24px rgba(11,92,171,.08);
  --shadow-lg:0 12px 48px rgba(11,92,171,.14);
  --radius:14px;
  --radius-sm:10px;
  --max-w:1200px;
}

/* ---- Container ---- */
.container{max-width:var(--max-w);margin:0 auto;padding:0 24px}

/* ---- Buttons ---- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:50px;font-size:15px;font-weight:600;transition:.3s;letter-spacing:.3px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 24px rgba(11,92,171,.3)}
.btn-outline{background:transparent;color:var(--primary);border:2px solid var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-white{background:var(--primary);color:#fff;box-shadow:0 8px 24px rgba(11,92,171,.25)}
.btn-white:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 12px 32px rgba(11,92,171,.35)}
.btn-ghost{background:transparent;color:var(--primary-dark);border:2px solid var(--border)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);background:rgba(11,92,171,.04)}

/* ---- Header ---- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.98);backdrop-filter:blur(12px);box-shadow:0 1px 0 var(--border);transition:.3s}
.site-header.scrolled{box-shadow:0 4px 20px rgba(0,0,0,.08)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-wrap img{height:42px;width:auto}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-text .cn{font-size:18px;font-weight:700;color:var(--primary-dark)}
.logo-text .en{font-size:10px;color:var(--text-muted);letter-spacing:1px}

/* Nav */
.main-nav{display:flex;align-items:center;gap:36px}
.main-nav a{font-size:15px;font-weight:500;color:var(--text);position:relative;padding:6px 0;transition:.2s}
.main-nav a::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--primary);transition:.3s}
.main-nav a:hover{color:var(--primary)}
.main-nav a:hover::after,.main-nav a.active::after{width:100%}
.main-nav a.active{color:var(--primary);font-weight:600}

.header-contact{display:flex;align-items:center;gap:16px}
.header-phone{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--primary)}
.header-phone svg{width:18px;height:18px}
.mobile-toggle{display:none;font-size:24px;color:var(--primary)}

/* ---- Hero ---- */
/* 整一个画布: 左侧 = 海报图虚化背景 + 文字介绍; 右侧 = 海报图清晰顶到 viewport 边缘 */
.hero{position:relative;min-height:680px;padding-top:96px;padding-bottom:56px;display:flex;align-items:center;color:#0c1f38;overflow:hidden;border-bottom:1px solid #d8e6f3}
/* 整片 hero 渐变底色 (海报复位区) */
.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(11,92,171,.06) 0%,rgba(0,163,168,.04) 100%);pointer-events:none;z-index:0}
/* 左侧虚化背景层: 海报图全幅 + blur(20px) + 暗化蒙层 */
.hero-poster-blur{position:absolute;inset:0;z-index:1;overflow:hidden;pointer-events:none}
.hero-poster-blur-img{position:absolute;left:-5%;top:-5%;width:70%;height:110%;display:block;object-fit:cover;object-position:center;filter:blur(20px) saturate(.9) brightness(.78);transform:scale(1.05)}
/* 蒙层: 左侧更白更亮 (让深色文字清晰可读), 右侧逐渐过渡到虚化原色 */
.hero-poster-blur-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(225,238,250,.86) 0%,rgba(205,225,245,.78) 35%,rgba(120,160,200,.35) 60%,rgba(20,50,100,.05) 100%),linear-gradient(180deg,rgba(255,255,255,.25) 0%,rgba(255,255,255,.0) 25%,rgba(255,255,255,.0) 70%,rgba(255,255,255,.35) 100%)}
.hero-bg-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(11,92,171,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(11,92,171,.05) 1px,transparent 1px);background-size:48px 48px;pointer-events:none;opacity:.3;z-index:2}
.hero .container{position:relative;z-index:5;width:100%}
/* 右侧清晰海报图 - 占 hero 右 55%, 顶到 viewport 边缘 */
.hero-poster-bg{position:absolute;right:0;top:0;bottom:0;width:55%;z-index:3;overflow:hidden}
.hero-poster{width:100%;height:100%;display:block;object-fit:cover;object-position:center center;border-radius:0;border:none;box-shadow:none;animation:none}
/* 清晰海报图左边缘渐变到虚化背景, 让左右贯通 */
.hero-poster-fade{position:absolute;left:0;top:0;bottom:0;width:120px;background:linear-gradient(90deg,rgba(205,225,245,.85) 0%,rgba(205,225,245,.4) 50%,transparent 100%);pointer-events:none;z-index:4}
/* 文字内容 - 固定 480px 宽, 严格控制在海报图左边缘以内 (1280 视窗下) */
.hero-content{position:relative;width:480px;max-width:calc(45vw - 40px);z-index:5}
/* badge 自身: 极轻微的半透明白底仅 8% 透明度, 让小绿点和文字可读, 不再有边框+卡片感 */
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;background:rgba(255,255,255,.45);border:1px solid rgba(11,92,171,.2);border-radius:50px;font-size:12px;color:#0b5cab;font-weight:500;margin-bottom:20px;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}
.hero-badge .dot{width:7px;height:7px;background:#22c55e;border-radius:50%;animation:pulse 2s infinite;box-shadow:0 0 8px rgba(34,197,94,.6)}
.hero h1{font-size:40px;line-height:1.3;font-weight:800;margin-bottom:18px;letter-spacing:1px;color:#0c1f38}
.hero h1 .highlight{color:#00838f;background:linear-gradient(135deg,#00838f,#0b5cab);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero .subtitle{font-size:15px;line-height:1.75;color:#1a2e48;margin-bottom:28px;text-shadow:0 1px 2px rgba(255,255,255,.5)}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:32px}
.hero-stats{display:flex;gap:28px;flex-wrap:wrap;padding-top:24px;border-top:1px solid rgba(11,92,171,.2)}
.hero-stat .num{font-size:30px;font-weight:800;background:linear-gradient(135deg,#00838f,#0b5cab);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;line-height:1}
.hero-stat .label{font-size:12px;color:#3a4a5e;margin-top:4px;font-weight:500}

@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.85)}}
/* 删除悬浮动画 - 注释掉避免冲突
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}} */

/* ---- Section base ---- */
.section{padding:80px 0}
.section-soft{background:var(--bg-soft)}
.section-dark{background:var(--bg-dark);color:#fff}
.section-head{text-align:center;max-width:720px;margin:0 auto 56px}
.section-head .eyebrow{display:inline-block;padding:4px 16px;background:var(--primary-light);color:var(--primary);border-radius:50px;font-size:13px;font-weight:600;margin-bottom:16px}
.section-dark .section-head .eyebrow{background:rgba(255,255,255,.1);color:#67e8f9}
.section-head h2{font-size:34px;font-weight:800;color:var(--text);margin-bottom:16px}
.section-dark .section-head h2{color:#fff}
.section-head p{font-size:16px;color:var(--text-light)}
.section-dark .section-head p{color:rgba(255,255,255,.7)}

/* ---- Product Category Cards ---- */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.cat-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:36px 28px;transition:.3s;position:relative;overflow:hidden}
.cat-card::before{content:'';position:absolute;top:0;left:0;width:100%;height:4px;background:linear-gradient(90deg,var(--primary),var(--accent));transform:scaleX(0);transform-origin:left;transition:.3s}
.cat-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-6px);border-color:transparent}
.cat-card:hover::before{transform:scaleX(1)}
.cat-icon{width:60px;height:60px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:28px;margin-bottom:20px;background:var(--primary-light)}
.cat-card h3{font-size:20px;font-weight:700;margin-bottom:12px;color:var(--text)}
.cat-card p{font-size:14px;color:var(--text-light);margin-bottom:20px;line-height:1.7}
.cat-brands{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}
.cat-brands span{font-size:12px;padding:3px 10px;background:var(--bg-soft);border-radius:20px;color:var(--text-muted);font-weight:600}
.cat-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);transition:.2s}
.cat-card:hover .cat-link{gap:12px}

/* ---- Brand Grid ---- */
.brand-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.brand-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:32px 24px;text-align:center;transition:.3s}
.brand-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px);border-color:var(--primary)}
.brand-logo{width:80px;height:80px;margin:0 auto 16px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;color:#fff;letter-spacing:.5px}
.brand-card h3{font-size:18px;font-weight:700;margin-bottom:8px}
.brand-card .brand-cat{font-size:13px;color:var(--text-muted);margin-bottom:12px}
.brand-card p{font-size:14px;color:var(--text-light);line-height:1.7}

/* Brand color badges */
.bc-hp{background:#0096d6}
.bc-dell{background:#0076ce}
.bc-huawei{background:#c7000b}
.bc-tplink{background:#0aa9e0}
.bc-aruba{background:#ff7e00}
.bc-h3c{background:#e60012}

/* ---- Solutions ---- */
.sol-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.sol-card{border-radius:var(--radius);overflow:hidden;position:relative;min-height:280px;display:flex;align-items:flex-end;padding:32px;color:#fff;transition:.3s;cursor:pointer}
.sol-card:hover{transform:scale(1.02);box-shadow:0 20px 50px rgba(0,0,0,.3)}
.sol-card .sol-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;transition:transform .6s ease}
.sol-card:hover .sol-bg{transform:scale(1.05)}
.sol-card .sol-overlay{position:absolute;inset:0;z-index:1;opacity:.45}
.sol-card .sol-content{position:relative;z-index:2;text-shadow:0 2px 8px rgba(0,0,0,.6)}
.sol-card h3{font-size:22px;font-weight:700;margin-bottom:8px}
.sol-card p{font-size:14px;opacity:.95;line-height:1.6;text-shadow:0 1px 4px rgba(0,0,0,.6)}
.sol-1 .sol-overlay{background:linear-gradient(135deg,rgba(7,61,117,.7),rgba(11,92,171,.4))}
.sol-2 .sol-overlay{background:linear-gradient(135deg,rgba(0,109,119,.7),rgba(0,163,168,.4))}
.sol-3 .sol-overlay{background:linear-gradient(135deg,rgba(10,38,64,.7),rgba(45,107,160,.4))}
.sol-4 .sol-overlay{background:linear-gradient(135deg,rgba(124,29,31,.7),rgba(199,0,11,.4))}
.sol-card::after{content:'';position:absolute;left:0;right:0;bottom:0;height:60%;background:linear-gradient(to top,rgba(0,0,0,.55),transparent);z-index:1;pointer-events:none}

/* ---- Why Choose Us ---- */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.why-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:36px 28px;transition:.3s}
.why-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.why-icon{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:20px;background:var(--primary-light)}
.why-card h3{font-size:18px;font-weight:700;margin-bottom:12px}
.why-card p{font-size:14px;color:var(--text-light);line-height:1.7}

/* ---- Stats ---- */
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat-box .num{font-size:44px;font-weight:800;color:var(--primary);line-height:1}
.stat-box .label{font-size:15px;color:var(--text-light);margin-top:10px}

/* ---- CTA Banner ---- */
.cta-banner{background:linear-gradient(135deg,#073d75,#0b5cab);border-radius:var(--radius);padding:56px 48px;color:#fff;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-banner h2{font-size:28px;font-weight:800;margin-bottom:8px}
.cta-banner p{opacity:.85;font-size:15px}

/* ---- Footer ---- */
.site-footer{background:var(--bg-dark);color:rgba(255,255,255,.7);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:48px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand img{height:42px;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;margin-bottom:20px}
.footer-brand .domain{color:#67e8f9;font-weight:600}
.footer-col h4{font-size:16px;font-weight:600;color:#fff;margin-bottom:20px}
.footer-col li{margin-bottom:12px}
.footer-col a{font-size:14px;transition:.2s}
.footer-col a:hover{color:#67e8f9}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;margin-bottom:14px}
.footer-contact svg{width:18px;height:18px;flex-shrink:0;margin-top:3px;color:#67e8f9}
.footer-bottom{padding:24px 0;text-align:center;font-size:13px;color:rgba(255,255,255,.4)}

/* ---- Page Banner ---- */
.page-banner{padding:120px 0 80px;background:url('../img/page-banner.jpg') center/cover no-repeat,#0b5cab;color:#fff;text-align:center;position:relative;overflow:hidden}
.page-banner::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.15),rgba(0,0,0,.05));pointer-events:none}
.page-banner h1{font-size:38px;font-weight:800;margin-bottom:12px}
.page-banner p{font-size:16px;opacity:.85}
.breadcrumb{display:flex;justify-content:center;gap:8px;font-size:14px;margin-top:16px;opacity:.8}
.breadcrumb a:hover{color:#67e8f9}

/* ---- Product List ---- */
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.product-card{border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;transition:.3s;background:#fff}
.product-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.product-img{height:200px;background:linear-gradient(135deg,#f7fafc 0%,#eef3f8 100%);display:flex;align-items:center;justify-content:center;overflow:hidden;padding:16px}
.product-img img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;display:block;margin:auto}
.product-info{padding:16px}
.product-info .brand-tag{font-size:11px;font-weight:700;color:#fff;padding:2px 8px;border-radius:4px;display:inline-block;margin-bottom:8px}
.product-info h4{font-size:15px;font-weight:600;margin-bottom:6px}
.product-info p{font-size:12px;color:var(--text-muted)}

/* ---- Filter bar ---- */
.filter-bar{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:32px}
.filter-chip{padding:8px 20px;border:1px solid var(--border);border-radius:50px;font-size:14px;font-weight:500;transition:.2s;cursor:pointer}
.filter-chip:hover{border-color:var(--primary);color:var(--primary)}
.filter-chip.active{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ---- About ---- */
.about-intro{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.about-text h2{font-size:28px;font-weight:800;margin-bottom:20px;color:var(--text)}
.about-text p{font-size:15px;color:var(--text-light);line-height:1.8;margin-bottom:16px}
.about-visual{border-radius:var(--radius);overflow:hidden;min-height:380px;background:linear-gradient(135deg,#073d75,#0b5cab,#00a3a8);display:flex;align-items:center;justify-content:center;color:#fff}
.about-visual .big-text{text-align:center;padding:48px}
.about-visual .big-text .num{font-size:72px;font-weight:800;color:#67e8f9}
.about-visual .big-text .lbl{font-size:18px;opacity:.85}

/* ---- Contact ---- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.contact-info-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:40px}
.contact-info-card h3{font-size:22px;font-weight:700;margin-bottom:28px}
.contact-item{display:flex;gap:16px;margin-bottom:24px}
.contact-item .ci-icon{width:48px;height:48px;border-radius:12px;background:var(--primary-light);display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0}
.contact-item .ci-text h4{font-size:15px;font-weight:600;margin-bottom:4px}
.contact-item .ci-text p{font-size:15px;color:var(--text-light)}
.contact-form{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:40px}
.contact-form h3{font-size:22px;font-weight:700;margin-bottom:28px}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:8px;font-size:14px;font-family:inherit;transition:.2s}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}

/* ---- Animations ---- */
.fade-up{opacity:0;transform:translateY(30px);transition:.6s}
.fade-up.visible{opacity:1;transform:translateY(0)}

/* ---- Responsive ---- */
@media(max-width:980px){
  .cat-grid,.brand-grid,.why-grid{grid-template-columns:repeat(2,1fr)}
  .sol-grid{grid-template-columns:1fr}
  .stats-row{grid-template-columns:repeat(2,1fr);gap:32px}
  .product-grid{grid-template-columns:repeat(2,1fr)}
  .about-intro,.contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .main-nav{display:none}
  .mobile-toggle{display:block}
  .hero{flex-direction:column;align-items:stretch;min-height:auto;padding-top:96px;padding-bottom:48px}
  .hero h1{font-size:28px}
  .hero-content{width:100%;max-width:100%;padding:0 8px}
  .hero-poster-bg{position:relative;width:100%;height:280px;order:-1;margin-top:8px}
  .hero-poster-blur-img{width:100%;left:0;filter:blur(14px)}
  .hero-poster-fade{display:none}
  .hero-stats{gap:18px}
  .hero-stat .num{font-size:24px}
  .cta-banner{flex-direction:column;text-align:center}
}
@media(max-width:640px){
  .cat-grid,.brand-grid,.why-grid,.product-grid,.stats-row{grid-template-columns:1fr}
  .section{padding:48px 0}
  .section-head{margin-bottom:36px}
  .section-head h2{font-size:26px}
  .section-head p{font-size:14px}
  .hero{min-height:auto;padding:110px 0 56px}
  .hero h1{font-size:26px}
  .hero .subtitle{font-size:15px}
  .hero-poster{max-width:100%}
  .hero-stats{gap:20px;margin-top:32px}
  .hero-stat .num{font-size:22px}
  .hero-stat .label{font-size:11px}
  .hero-actions{gap:10px}
  .hero-actions .btn{padding:12px 24px;font-size:14px}
  .footer-grid{grid-template-columns:1fr}
  .header-contact{display:none}
  .page-banner{padding:100px 0 56px}
  .page-banner h1{font-size:28px}
  .page-banner p{font-size:14px}
  .cta-banner{padding:36px 24px}
  .cta-banner h2{font-size:22px}
  .cta-banner p{font-size:14px}
  .contact-info-card,.contact-form{padding:24px}
  .contact-info-card h3,.contact-form h3{font-size:18px;margin-bottom:20px}
  .contact-item{margin-bottom:18px}
  .contact-item .ci-icon{width:40px;height:40px;font-size:18px}
  .about-visual{min-height:240px}
  .about-visual .big-text{padding:32px}
  .about-visual .big-text .num{font-size:48px}
  .about-visual .big-text .lbl{font-size:15px}
  .stat-box .num{font-size:34px}
  .product-img{height:160px}
  .product-info{padding:12px}
  .product-info h4{font-size:14px}
  .product-info p{font-size:11px}
  .filter-bar{gap:8px;margin-bottom:24px}
  .filter-chip{padding:6px 14px;font-size:13px}
  .container{padding:0 16px}
  .logo-wrap img{height:36px}
  .logo-text .cn{font-size:16px}
  .header-inner{height:64px}
}