/* ==============================================
   聚鑫图文快印 · 商务蓝版
   ============================================== */

/* --- 变量 --- */
:root {
  --blue:        #0061FF;
  --blue-dark:   #0049CC;
  --blue-light:  #E8F0FF;
  --orange:      #FF6B35;
  --text:        #1A1A2E;
  --text-mid:    #555566;
  --text-soft:   #888899;
  --bg:          #F4F6FA;
  --surface:     #FFFFFF;
  --line:        #E0E4EE;
  --radius:      8px;
  --radius-lg:   14px;
  --shadow-sm:   0 1px 6px rgba(0,97,255,.08);
  --shadow:      0 4px 24px rgba(0,97,255,.12);
  --shadow-lg:   0 12px 48px rgba(0,97,255,.18);
  --trans:       .22s ease;
  --font:        "Microsoft YaHei","PingFang SC","Noto Sans SC",sans-serif;
}

/* --- Reset --- */
*,::before,::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.7;overflow-x:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{cursor:pointer;font-family:inherit;border:none;background:none}
@media(prefers-reduced-motion:reduce){*,::before,::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}

/* --- 工具 --- */
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section-label{font-size:.75rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--blue);margin-bottom:.5rem}
.section-title{font-size:clamp(1.5rem,3vw,2.1rem);font-weight:700;color:var(--text);line-height:1.3}
.section-sub{font-size:.94rem;color:var(--text-mid);margin-top:.5rem;line-height:1.8}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:.9rem;padding:12px 26px;border-radius:var(--radius);transition:all var(--trans);cursor:pointer}
.btn-blue{background:var(--blue);color:#fff;border:2px solid var(--blue)}
.btn-blue:hover{background:var(--blue-dark);border-color:var(--blue-dark);transform:translateY(-1px);box-shadow:0 6px 20px rgba(0,97,255,.35)}
.btn-ghost{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.7)}
.btn-ghost:hover{background:#fff;color:var(--blue)}
.btn-blue-outline{background:transparent;color:var(--blue);border:2px solid var(--blue)}
.btn-blue-outline:hover{background:var(--blue);color:#fff}
.tag{display:inline-block;font-size:.72rem;font-weight:700;padding:3px 10px;border-radius:20px;background:var(--blue-light);color:var(--blue);letter-spacing:.04em}

/* --- 顶栏 --- */
.topbar{background:var(--text);color:rgba(255,255,255,.7);font-size:.8rem;padding:7px 0}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:12px}
.topbar-left{display:flex;align-items:center;gap:20px}
.topbar-left a{color:rgba(255,255,255,.7);transition:color var(--trans);display:flex;align-items:center;gap:5px}
.topbar-left a:hover{color:#fff}
.topbar-right{display:flex;align-items:center;gap:8px}
.topbar-badge{background:var(--orange);color:#fff;font-size:.72rem;font-weight:700;padding:2px 10px;border-radius:12px}
.topbar svg{width:13px;height:13px;stroke:currentColor;fill:none;flex-shrink:0}

/* --- 导航 --- */
.navbar{position:sticky;top:0;z-index:100;background:var(--surface);box-shadow:0 2px 12px rgba(0,0,0,.08);transition:box-shadow var(--trans)}
.navbar .container{display:flex;align-items:center;height:70px;gap:0}
.nav-logo{display:flex;align-items:center;flex-shrink:0;margin-right:20px}
.nav-logo img{display:none}
.nav-logo-name{font-size:1rem;font-weight:700;line-height:1.25;color:var(--text);white-space:nowrap}
.nav-logo-name em{font-style:normal;color:inherit}
.nav-links{display:flex;align-items:center;gap:2px;flex:1}
.nav-links a{padding:8px 12px;font-size:.86rem;font-weight:500;color:var(--text-mid);border-radius:var(--radius);transition:all var(--trans);white-space:nowrap}
.nav-links a:hover,.nav-links a.active{color:var(--blue);background:var(--blue-light)}
.nav-cta{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-phone{display:flex;align-items:center;gap:6px;font-weight:700;font-size:.95rem;color:var(--text);transition:color var(--trans)}
.nav-phone:hover{color:var(--blue)}
.nav-phone svg{width:16px;height:16px;stroke:var(--blue);fill:none}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:36px;height:36px;padding:4px;border-radius:var(--radius)}
.nav-toggle:hover{background:var(--bg)}
.nav-toggle span{display:block;height:2px;background:var(--text);border-radius:2px;transition:all var(--trans)}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-mobile{display:none;flex-direction:column;background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:70px;z-index:99}
.nav-mobile.open{display:flex}
.nav-mobile a{padding:14px 24px;font-size:.95rem;color:var(--text-mid);border-bottom:1px solid var(--line);transition:all var(--trans)}
.nav-mobile a:hover{color:var(--blue);background:var(--blue-light)}

/* --- Hero 轮播 --- */
.hero{position:relative;overflow:hidden;background:#0A0E1A}
.hero-slider{display:flex;transition:transform .7s cubic-bezier(.4,0,.2,1)}
.hero-slide{min-width:100%;position:relative;height:580px;display:flex;align-items:center}
.hero-slide img.slide-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.45}
.hero-slide-inner{position:relative;z-index:2;max-width:1200px;margin:0 auto;padding:0 24px;width:100%}
.hero-slide-tag{display:inline-block;background:var(--orange);color:#fff;font-size:.72rem;font-weight:700;padding:4px 14px;border-radius:14px;margin-bottom:16px;letter-spacing:.06em}
.hero-slide-title{font-size:clamp(2rem,5vw,3.4rem);font-weight:700;color:#fff;line-height:1.2;margin-bottom:16px}
.hero-slide-title em{font-style:normal;color:#5BA3FF}
.hero-slide-sub{font-size:1.05rem;color:rgba(255,255,255,.75);margin-bottom:32px;max-width:500px;line-height:1.8}
.hero-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
/* 指示点 */
.hero-dots{position:absolute;bottom:28px;left:50%;transform:translateX(-50%);display:flex;gap:8px;z-index:10}
.hero-dot{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.35);transition:all var(--trans);cursor:pointer;border:none}
.hero-dot.active{background:#fff;width:24px;border-radius:4px}
/* 箭头 */
.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:10;width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.12);display:flex;align-items:center;justify-content:center;transition:background var(--trans);border:none}
.hero-arrow:hover{background:rgba(255,255,255,.25)}
.hero-arrow svg{width:20px;height:20px;stroke:#fff;fill:none}
.hero-arrow.prev{left:20px}
.hero-arrow.next{right:20px}

/* --- 数字腰带 --- */
.stats-bar{background:var(--blue);padding:28px 0}
.stats-bar .container{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat-item{text-align:center;border-right:1px solid rgba(255,255,255,.18)}
.stat-item:last-child{border-right:none}
.stat-num{font-size:2.2rem;font-weight:700;color:#fff;line-height:1}
.stat-num sup{font-size:1rem;vertical-align:super}
.stat-label{font-size:.8rem;color:rgba(255,255,255,.72);margin-top:4px}

/* --- 产品中心 --- */
.products{padding:80px 0;background:var(--surface)}
.products-header{text-align:center;margin-bottom:48px}
.products-header .section-sub{margin:.5rem auto 0}
/* 分类切换 */
.product-tabs{display:flex;justify-content:center;gap:8px;margin-bottom:40px;flex-wrap:wrap}
.product-tab{padding:9px 22px;font-size:.88rem;font-weight:600;border:1px solid var(--line);border-radius:20px;color:var(--text-mid);background:var(--surface);transition:all var(--trans)}
.product-tab:hover{border-color:var(--blue);color:var(--blue)}
.product-tab.active{background:var(--blue);border-color:var(--blue);color:#fff}
/* 产品网格 */
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.product-card{border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:var(--surface);transition:box-shadow var(--trans),transform var(--trans),border-color var(--trans)}
.product-card:hover{box-shadow:var(--shadow);transform:translateY(-4px);border-color:var(--blue)}
.product-card-img{aspect-ratio:4/3;overflow:hidden}
.product-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.product-card:hover .product-card-img img{transform:scale(1.06)}
.product-card-body{padding:18px 20px}
.product-card-name{font-size:1.02rem;font-weight:700;color:var(--text);margin-bottom:6px}
.product-card-desc{font-size:.84rem;color:var(--text-mid);line-height:1.7;margin-bottom:14px}
.product-card-link{font-size:.84rem;font-weight:700;color:var(--blue);display:inline-flex;align-items:center;gap:4px;transition:gap var(--trans)}
.product-card:hover .product-card-link{gap:8px}

/* --- 服务优势 --- */
.advantages{padding:80px 0;background:var(--bg)}
.adv-inner{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.adv-left .section-sub{max-width:400px}
.adv-list{margin-top:32px;display:flex;flex-direction:column;gap:0}
.adv-item{display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--line)}
.adv-item:first-child{padding-top:0}
.adv-item:last-child{border-bottom:none;padding-bottom:0}
.adv-icon{width:48px;height:48px;border-radius:var(--radius);background:var(--blue-light);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.adv-icon svg{width:24px;height:24px;stroke:var(--blue);fill:none}
.adv-title{font-size:.98rem;font-weight:700;color:var(--text);margin-bottom:4px}
.adv-desc{font-size:.85rem;color:var(--text-mid);line-height:1.7}
.adv-right{position:relative}
.adv-img-main{width:100%;border-radius:var(--radius-lg);object-fit:cover;aspect-ratio:4/3;box-shadow:var(--shadow-lg)}
.adv-badge{position:absolute;bottom:-14px;right:-14px;background:var(--surface);border:2px solid var(--line);border-radius:var(--radius);padding:14px 18px;display:flex;align-items:center;gap:12px;box-shadow:var(--shadow)}
.adv-badge-num{font-size:1.8rem;font-weight:700;color:var(--blue);line-height:1}
.adv-badge-text{font-size:.78rem;color:var(--text-mid)}

/* --- 案例展示 --- */
.cases{padding:80px 0;background:var(--surface)}
.cases-header{text-align:center;margin-bottom:36px}
.case-filters{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-bottom:36px}
.case-filter-btn{padding:8px 20px;font-size:.85rem;font-weight:600;border:1px solid var(--line);border-radius:20px;color:var(--text-mid);background:transparent;transition:all var(--trans)}
.case-filter-btn:hover{border-color:var(--blue);color:var(--blue)}
.case-filter-btn.active{background:var(--blue);border-color:var(--blue);color:#fff}
.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.case-item{position:relative;display:block;color:inherit;border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:4/3;cursor:pointer}
.case-item img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.case-item:hover img{transform:scale(1.08)}
.case-overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(0,30,80,.8) 0%,transparent 55%);display:flex;flex-direction:column;justify-content:flex-end;padding:16px;opacity:0;transition:opacity var(--trans)}
.case-item:hover .case-overlay{opacity:1}
.case-overlay-tag{align-self:flex-start;background:var(--blue);color:#fff;font-size:.7rem;font-weight:700;padding:3px 10px;border-radius:10px;margin-bottom:6px}
.case-overlay-title{font-size:.95rem;font-weight:700;color:#fff}
.cases-more{text-align:center;margin-top:32px}

/* --- 客户评价 --- */
.testimonials{padding:80px 0;background:var(--bg)}
.testi-header{text-align:center;margin-bottom:48px}
.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.testi-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px}
.testi-stars{display:flex;gap:3px;margin-bottom:14px}
.testi-stars svg{width:15px;height:15px;fill:#F5A623;stroke:#F5A623}
.testi-body{font-size:.88rem;color:var(--text);line-height:1.8;margin-bottom:20px}
.testi-person{display:flex;align-items:center;gap:12px}
.testi-avatar{width:40px;height:40px;border-radius:50%;background:var(--blue-light);color:var(--blue);font-weight:700;font-size:.95rem;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.testi-name{font-size:.88rem;font-weight:700;color:var(--text)}
.testi-role{font-size:.78rem;color:var(--text-soft)}

/* --- CTA Banner --- */
.cta-banner{padding:64px 0;background:linear-gradient(135deg,var(--blue) 0%,#003DAD 100%)}
.cta-banner .container{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-title{font-size:clamp(1.4rem,3vw,2rem);font-weight:700;color:#fff}
.cta-sub{font-size:.94rem;color:rgba(255,255,255,.75);margin-top:.4rem}
.cta-actions{display:flex;gap:14px;flex-shrink:0;flex-wrap:wrap}

/* --- 联系我们 --- */
.contact{padding:80px 0;background:var(--surface)}
.contact-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:start}
.contact-info-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}
.contact-info-item{display:flex;gap:14px;padding:20px;background:var(--bg);border-radius:var(--radius-lg);border:1px solid var(--line)}
.contact-info-icon{width:44px;height:44px;background:var(--blue);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.contact-info-icon svg{width:22px;height:22px;stroke:#fff;fill:none}
.contact-info-label{font-size:.78rem;color:var(--text-soft);margin-bottom:3px}
.contact-info-value{font-size:.95rem;font-weight:700;color:var(--text)}
.contact-info-value a{color:var(--text);transition:color var(--trans)}
.contact-info-value a:hover{color:var(--blue)}
.contact-phone-list{display:flex;flex-direction:column;gap:2px}
.contact-panel{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-lg);padding:32px}
.contact-qr-wrap{width:160px;height:160px;margin:0 auto 14px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:#fff}
.contact-qr-wrap img{width:100%;height:100%;object-fit:contain}
.contact-qr-label{text-align:center;font-size:.88rem;font-weight:700;color:var(--text);margin-bottom:4px}
.contact-qr-sub{text-align:center;font-size:.78rem;color:var(--text-soft);margin-bottom:20px}
.contact-divider{height:1px;background:var(--line);margin:20px 0}
.contact-form{display:flex;flex-direction:column;gap:10px}
.contact-form input,.contact-form textarea{width:100%;padding:10px 14px;border:1px solid var(--line);border-radius:var(--radius);font-size:.87rem;font-family:inherit;background:var(--surface);color:var(--text);transition:border-color var(--trans)}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--blue)}
.contact-form textarea{min-height:72px;resize:vertical}
.contact-form .btn{justify-content:center;width:100%;margin-top:4px}

/* --- 页脚 --- */
.footer{background:var(--text);color:rgba(255,255,255,.5);padding:52px 0 20px;font-size:.85rem}
.footer-top{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:40px;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand-row{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.footer-brand-row img{height:32px}
.footer-brand-name{font-size:1rem;font-weight:700;color:#fff}
.footer-desc{line-height:1.85;max-width:280px}
.footer-col-title{font-size:.88rem;font-weight:700;color:#fff;margin-bottom:14px}
.footer-col a{display:block;color:rgba(255,255,255,.5);margin-bottom:9px;transition:color var(--trans)}
.footer-col a:hover{color:#fff}
.footer-col li{margin-bottom:9px}
.footer-bottom{padding-top:18px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px;font-size:.78rem}

/* --- 回顶部 & 悬浮 --- */
.back-to-top{position:fixed;right:20px;bottom:80px;width:44px;height:44px;border-radius:50%;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow);opacity:0;visibility:hidden;transform:translateY(12px);transition:all var(--trans);z-index:90;border:none}
.back-to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-to-top:hover{background:var(--blue-dark)}
.back-to-top svg{width:20px;height:20px;stroke:#fff;fill:none}
.mobile-bar{display:none;position:fixed;bottom:0;left:0;right:0;background:var(--surface);border-top:1px solid var(--line);padding:8px 16px;gap:10px;z-index:95;box-shadow:0 -4px 16px rgba(0,0,0,.08)}
.mobile-bar a{flex:1;display:flex;align-items:center;justify-content:center;gap:6px;padding:10px;border-radius:var(--radius);font-size:.85rem;font-weight:700}
.mobile-bar a.call{background:var(--blue);color:#fff}
.mobile-bar a.wechat{background:var(--bg);color:var(--text);border:1px solid var(--line)}
.mobile-bar svg{width:16px;height:16px;stroke:currentColor;fill:none}

/* --- 灯箱 --- */
.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.9);display:none;align-items:center;justify-content:center;z-index:200;padding:32px}
.lightbox.open{display:flex}
.lightbox img{max-width:90vw;max-height:85vh;border-radius:var(--radius);box-shadow:0 0 60px rgba(0,0,0,.5)}
.lightbox-close{position:absolute;top:20px;right:20px;width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;transition:background var(--trans);border:none}
.lightbox-close:hover{background:rgba(255,255,255,.2)}
.lightbox-close svg{width:22px;height:22px;stroke:#fff;fill:none}
.lightbox-caption{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);color:rgba(255,255,255,.8);font-size:.9rem;white-space:nowrap}

/* --- 滚动入场 --- */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .55s ease,transform .55s ease}
.reveal.in-view{opacity:1;transform:translateY(0)}

/* --- 响应式 --- */
@media(max-width:1024px){
  .product-grid{grid-template-columns:repeat(2,1fr)}
  .cases-grid{grid-template-columns:repeat(2,1fr)}
  .testi-grid{grid-template-columns:repeat(2,1fr)}
  .footer-top{grid-template-columns:1fr 1fr}
}
@media(max-width:1100px){
  .nav-logo{margin-right:14px}
  .nav-logo-name{font-size:.92rem}
  .nav-links a{padding:8px 10px;font-size:.84rem}
  .nav-phone{display:none}
}
@media(max-width:960px){
  .nav-cta .btn{display:none}
}
@media(max-width:860px){
  .nav-links,.nav-cta .nav-phone,.nav-cta .btn{display:none}
  .nav-logo{margin-right:auto}
  .nav-logo-name{font-size:.9rem}
  .nav-toggle{display:flex}
  .hero-slide{height:420px}
  .hero-slide-title{font-size:2rem}
  .stats-bar .container{grid-template-columns:repeat(2,1fr)}
  .stat-item:nth-child(2){border-right:none}
  .adv-inner{grid-template-columns:1fr;gap:40px}
  .adv-badge{display:none}
  .contact-inner{grid-template-columns:1fr}
  .cta-banner .container{flex-direction:column;text-align:center}
}
@media(max-width:640px){
 .nav-logo-name{font-size:.82rem}
 .product-grid{grid-template-columns:1fr}
 .cases-grid{grid-template-columns:1fr 1fr}
  .testi-grid{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
  .contact-info-grid{grid-template-columns:1fr}
  .hero-slide{height:360px}
  .hero-actions{flex-direction:column;align-items:flex-start}
  .stats-bar .container{grid-template-columns:repeat(2,1fr)}
  .mobile-bar{display:flex}
  body{padding-bottom:62px}
  .topbar-left span{display:none}
}
@media(max-width:360px){
  .nav-logo-name{font-size:.76rem}
}

/* 企业展示站：保留原商务蓝视觉，隐藏线上交易组件 */
.contact-form,.contact-divider{display:none}