/* ====================================================================
   零行 zerow — 官网全局样式
   配色：主色 #0F4C81 | 银灰 #D8DEE3 | 警示橙 #FF7828
   风格：工业科技简约风
==================================================================== */

/* ========== Reset & Base ========== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}

:root{
    --c-primary:#0F4C81;
    --c-primary-light:#1a6ab5;
    --c-primary-dark:#0a3a64;
    --c-silver:#D8DEE3;
    --c-orange:#FF7828;
    --c-orange-dark:#e56a1f;
    --bg-white:#ffffff;
    --bg-light:#f5f7fa;
    --bg-dark:#1a2733;
    --bg-dark-card:#222f3e;
    --text-dark:#1a2733;
    --text-body:#3d4a5c;
    --text-muted:#7a8599;
    --text-light:#ffffff;
    --border:#e2e8f0;
    --border-dark:rgba(255,255,255,0.08);
    --radius:8px;
    --radius-lg:16px;
    --shadow-sm:0 2px 8px rgba(15,76,129,0.08);
    --shadow:0 4px 20px rgba(15,76,129,0.12);
    --shadow-lg:0 12px 40px rgba(15,76,129,0.15);
    --max-width:1280px;
    --header-h:72px;
    --font-zh:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
    --font-en:"Inter","Segoe UI","Roboto",sans-serif;
}

html{scroll-behavior:smooth;font-size:16px}
body{
    font-family:var(--font-zh);
    color:var(--text-body);
    background:var(--bg-white);
    line-height:1.7;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}
section{position:relative}
button{cursor:pointer;font-family:inherit;border:none;background:none}
input,select,textarea{font-family:inherit}

.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}
.container-sm{max-width:1000px;margin:0 auto;padding:0 24px}

/* ========== Typography ========== */
h1,h2,h3,h4,h5,h6{color:var(--text-dark);font-weight:700;line-height:1.3}
.section-tag{display:inline-block;font-size:13px;color:var(--c-primary);letter-spacing:3px;text-transform:uppercase;font-weight:600;margin-bottom:12px;font-family:var(--font-en)}
.section-title{font-size:32px;font-weight:700;margin-bottom:12px;letter-spacing:-0.5px;color:var(--text-dark)}
.section-title.light{color:var(--text-light)}
.section-desc{font-size:15px;color:var(--text-muted);max-width:640px;margin:0 auto}
.text-center{text-align:center}
.text-orange{color:var(--c-orange)}
.text-primary{color:var(--c-primary)}
.bold{font-weight:700}

/* ========== Buttons ========== */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:var(--radius);font-size:14px;font-weight:600;transition:all .25s;white-space:nowrap}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:var(--shadow)}
.btn-orange{background:var(--c-orange);color:#fff}
.btn-orange:hover{background:var(--c-orange-dark);transform:translateY(-1px)}
.btn-outline{background:transparent;color:var(--c-primary);border:1.5px solid var(--c-primary)}
.btn-outline:hover{background:var(--c-primary);color:#fff}
.btn-outline-light{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.4)}
.btn-outline-light:hover{background:rgba(255,255,255,.1);border-color:#fff}
.btn-lg{padding:15px 36px;font-size:15px}
.btn-sm{padding:8px 18px;font-size:13px}
.btn-block{width:100%;justify-content:center}

/* ========== Header ========== */
.header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.95);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border);transition:box-shadow .3s}
.header.scrolled{box-shadow:0 2px 16px rgba(0,0,0,.06)}
.header .container{display:flex;align-items:center;justify-content:space-between;height:var(--header-h)}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;color:var(--c-primary);flex-shrink:0}
.logo-img{width:40px;height:40px;border-radius:8px;object-fit:cover;box-shadow:0 2px 12px rgba(15,76,129,.2)}
.logo-icon{width:38px;height:38px;border-radius:8px;background:linear-gradient(135deg,var(--c-primary),var(--c-primary-light));display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;font-weight:800;font-family:var(--font-en);box-shadow:0 2px 12px rgba(15,76,129,.25)}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text .zh{font-size:16px}
.logo-text .en{font-size:10px;color:var(--c-primary-light);letter-spacing:2px;font-family:var(--font-en)}

.nav{display:flex;align-items:center;gap:28px}
.nav-menu{display:flex;gap:30px;align-items:center}
.nav-menu a{font-size:14px;font-weight:500;color:var(--text-body);transition:color .2s;position:relative}
.nav-menu a:hover,.nav-menu a.active{color:var(--c-primary)}
.nav-menu a.active::after{content:'';position:absolute;bottom:-20px;left:0;right:0;height:3px;background:var(--c-primary);border-radius:2px}

.header-right{display:flex;align-items:center;gap:16px}
.lang-toggle{display:flex;align-items:center;gap:6px;padding:6px 14px;border:1px solid var(--border);border-radius:20px;font-size:13px;color:var(--text-muted);cursor:pointer;user-select:none;transition:all .2s}
.lang-toggle:hover{border-color:var(--c-primary);color:var(--c-primary)}
.lang-toggle .active{color:var(--c-primary);font-weight:600}
.header-cta{padding:8px 20px;font-size:13px}

.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:6px}
.nav-toggle span{width:22px;height:2px;background:var(--text-dark);border-radius:2px;transition:all .3s}

/* ========== Floating Widgets ========== */
.float-widgets{position:fixed;right:16px;bottom:100px;z-index:900;display:flex;flex-direction:column;gap:8px}
.float-btn{width:52px;height:52px;border-radius:50%;background:#fff;box-shadow:0 4px 16px rgba(0,0,0,.12);display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;transition:all .25s;position:relative;font-size:11px;color:var(--text-muted);gap:2px}
.float-btn:hover{background:var(--c-primary);color:#fff;transform:translateX(-4px)}
.float-btn .icon{font-size:11px;font-weight:700;line-height:1;color:var(--c-primary)}
.float-btn .label{font-size:10px}
.float-btn .tooltip{position:absolute;right:62px;top:50%;transform:translateY(-50%);background:var(--bg-dark);color:#fff;padding:6px 14px;border-radius:6px;font-size:12px;white-space:nowrap;opacity:0;visibility:hidden;transition:all .2s}
.float-btn:hover .tooltip{opacity:1;visibility:visible}
.float-btn .qr-popup{position:absolute;right:62px;top:50%;transform:translateY(-50%);background:#fff;border-radius:8px;padding:8px;box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transition:all .2s;width:120px}
.float-btn:hover .qr-popup{opacity:1;visibility:visible}
.float-btn .qr-popup .qr-img{width:104px;height:104px;background:var(--bg-light);border-radius:4px;display:flex;align-items:center;justify-content:center;font-size:10px;color:var(--text-muted);text-align:center}
.float-btn .qr-popup .qr-label{text-align:center;font-size:11px;color:var(--text-body);margin-top:4px}

.back-top{position:fixed;right:16px;bottom:30px;width:44px;height:44px;border-radius:50%;background:var(--c-primary);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:900;opacity:0;visibility:hidden;transition:all .3s;font-size:18px}
.back-top.visible{opacity:1;visibility:visible}
.back-top:hover{background:var(--c-primary-dark)}

/* ========== Hero / Banner ========== */
.hero{position:relative;height:100vh;min-height:600px;overflow:hidden}
.hero-slider{position:absolute;inset:0}
.hero-slide{position:absolute;inset:0;opacity:0;transition:opacity 1s ease;background-size:cover;background-position:center;display:flex;align-items:center}
.hero-slide.active{opacity:1}
.hero-slide::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(10,58,100,.82) 0%,rgba(15,76,129,.7) 50%,rgba(26,39,51,.6) 100%)}
.hero-slide-content{position:relative;z-index:2;max-width:720px}
.hero-slide-content h1{font-size:46px;font-weight:800;color:#fff;line-height:1.25;margin-bottom:16px;letter-spacing:-1px}
.hero-slide-content p{font-size:18px;color:rgba(255,255,255,.85);margin-bottom:32px;line-height:1.6}
.hero-slide-content .btn-group{display:flex;gap:14px;flex-wrap:wrap}

.hero-dots{position:absolute;bottom:100px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:3}
.hero-dot{width:36px;height:4px;border-radius:2px;background:rgba(255,255,255,.3);cursor:pointer;transition:all .3s}
.hero-dot.active{background:#fff;width:48px}

.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:3;width:48px;height:48px;border-radius:50%;background:rgba(255,255,255,.15);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;color:#fff;cursor:pointer;font-size:22px;transition:all .25s}
.hero-arrow:hover{background:rgba(255,255,255,.3)}
.hero-arrow.prev{left:30px}
.hero-arrow.next{right:30px}

/* Radar ripple decoration */
.radar-ripple{position:absolute;top:50%;right:8%;transform:translateY(-50%);width:400px;height:400px;pointer-events:none;z-index:1}
.radar-ripple .ring{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);border:1px solid rgba(255,255,255,.1);border-radius:50%}
.radar-ripple .ring:nth-child(1){width:100px;height:100px;animation:ripplePulse 3s ease-out infinite}
.radar-ripple .ring:nth-child(2){width:200px;height:200px;animation:ripplePulse 3s ease-out infinite 1s}
.radar-ripple .ring:nth-child(3){width:300px;height:300px;animation:ripplePulse 3s ease-out infinite 2s}
@keyframes ripplePulse{0%{opacity:.6;transform:translate(-50%,-50%) scale(.8)}100%{opacity:0;transform:translate(-50%,-50%) scale(1.2)}}

/* ========== Page Hero (sub pages) ========== */
.page-hero{background:linear-gradient(135deg,var(--c-primary-dark),var(--c-primary));padding:120px 0 60px;text-align:center;position:relative;overflow:hidden}
.page-hero::before{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:40px 40px}
.page-hero h1{font-size:36px;color:#fff;position:relative;z-index:2;margin-bottom:10px}
.page-hero p{font-size:16px;color:rgba(255,255,255,.75);position:relative;z-index:2}
.page-hero .breadcrumb{position:relative;z-index:2;margin-top:16px;font-size:13px;color:rgba(255,255,255,.5)}
.page-hero .breadcrumb a{color:rgba(255,255,255,.5)}
.page-hero .breadcrumb a:hover{color:#fff}
.page-hero .breadcrumb span{margin:0 8px}

/* ========== Section Padding ========== */
.section{padding:80px 0}
.section-lg{padding:100px 0}
.section-gray{background:var(--bg-light)}
.section-dark{background:var(--bg-dark);color:rgba(255,255,255,.85)}
.section-dark h2,.section-dark h3,.section-dark h4{color:#fff}

/* ========== Advantage Cards ========== */
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.adv-card{padding:36px 28px;border-radius:var(--radius-lg);background:#fff;border:1px solid var(--border);transition:all .3s;text-align:center}
.adv-card:hover{border-color:var(--c-primary);box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.adv-card .icon{width:64px;height:64px;margin:0 auto 20px;border-radius:14px;background:linear-gradient(135deg,rgba(15,76,129,.08),rgba(15,76,129,.03));display:flex;align-items:center;justify-content:center;font-size:28px}
.adv-card .icon:empty::after{content:'IMG';font-size:13px;font-weight:700;color:var(--c-primary);letter-spacing:1px;opacity:.4}
.adv-card h4{font-size:17px;margin-bottom:10px}
.adv-card p{font-size:13px;color:var(--text-muted);line-height:1.7}

/* ========== Product Cards ========== */
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.product-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:all .3s;cursor:pointer}
.product-card:hover{border-color:var(--c-primary);box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.product-card .img{height:200px;background:linear-gradient(135deg,#f0f4f8,#e2eaf2);display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.product-card .img .icon{font-size:56px;filter:drop-shadow(0 4px 12px rgba(15,76,129,.15))}
.product-card .img .icon:empty::after{content:'产品图片';font-size:14px;font-weight:600;color:var(--c-primary);opacity:.35;letter-spacing:1px}
.product-card .img img{width:100%;height:100%;object-fit:cover}
/* 实拍图叠加在品牌占位图之上；图缺失时露出占位图 */
.product-card .img .prod-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:2}
.product-card .img .img-ph{position:absolute;inset:0;z-index:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;background:linear-gradient(135deg,#0F4C81,#1a2733);color:#fff;text-align:center;padding:10px}
.product-card .img .img-ph .ph-radar{width:54px;height:54px;margin-bottom:4px}
.product-card .img .img-ph .ph-name{font-size:13px;font-weight:600;line-height:1.3;padding:0 8px}
.product-card .img .img-ph .ph-code{font-size:10px;opacity:.6;letter-spacing:1px;font-family:var(--font-en)}
.product-card .img .tag{position:absolute;top:12px;left:12px;z-index:3;padding:3px 10px;border-radius:4px;font-size:11px;font-weight:600;color:#fff}
.product-card .img .tag.tag-77g{background:var(--c-primary)}
.product-card .img .tag.tag-24g{background:var(--c-orange)}
.product-card .img .tag.tag-acc{background:var(--text-muted)}
.product-card .info{padding:20px}
.product-card .info h4{font-size:16px;margin-bottom:6px}
.product-card .info .en{font-size:12px;color:var(--c-primary);margin-bottom:10px;font-family:var(--font-en)}
.product-card .info p{font-size:13px;color:var(--text-muted);line-height:1.6;margin-bottom:12px}
.product-card .info .specs{display:flex;flex-wrap:wrap;gap:6px}
.product-card .info .spec-tag{font-size:11px;padding:2px 8px;background:var(--bg-light);border-radius:4px;color:var(--text-muted)}

/* ========== Solution Entry Cards ========== */
.sol-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.sol-card{position:relative;border-radius:var(--radius-lg);overflow:hidden;height:280px;cursor:pointer;transition:all .3s}
.sol-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.sol-card .bg{position:absolute;inset:0;background-size:cover;background-position:center;transition:transform .4s}
.sol-card:hover .bg{transform:scale(1.05)}
.sol-card::before{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(10,58,100,.9) 0%,rgba(15,76,129,.4) 60%,transparent 100%);z-index:1}
.sol-card .content{position:absolute;bottom:0;left:0;right:0;padding:28px;z-index:2;color:#fff}
.sol-card .content .icon{font-size:32px;margin-bottom:8px}
.sol-card .content h4{font-size:18px;color:#fff;margin-bottom:6px}
.sol-card .content p{font-size:13px;color:rgba(255,255,255,.75)}
.sol-card .content .arrow{margin-top:12px;font-size:13px;color:var(--c-orange);font-weight:600;display:flex;align-items:center;gap:4px}

/* ========== Stats ========== */
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-box{text-align:center;padding:32px 20px}
.stat-box .num{font-size:42px;font-weight:800;color:var(--c-primary);line-height:1}
.stat-box .num .suffix{font-size:20px;font-weight:600}
.stat-box .label{font-size:14px;color:var(--text-muted);margin-top:8px}

/* ========== Certificate Scroll ========== */
.cert-scroll{display:flex;gap:24px;overflow-x:auto;padding:16px 0;scroll-snap-type:x mandatory}
.cert-scroll::-webkit-scrollbar{height:4px}
.cert-scroll::-webkit-scrollbar-thumb{background:var(--c-primary);border-radius:2px}
.cert-item{flex-shrink:0;width:200px;height:140px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;scroll-snap-align:start}
.cert-item .icon{font-size:32px;width:60px;height:60px;border-radius:8px;background:var(--bg-light);display:flex;align-items:center;justify-content:center}
.cert-item .icon:empty::after{content:'证书';font-size:12px;font-weight:600;color:var(--c-primary);opacity:.35}
.cert-item .icon img{width:100%;height:100%;object-fit:cover;border-radius:8px}
.cert-item .name{font-size:12px;color:var(--text-muted);text-align:center;padding:0 12px}

/* ========== Case Card (Advanced - No Image) ========== */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:all .3s ease;cursor:pointer;position:relative;display:flex;flex-direction:column;height:100%;box-shadow:0 2px 8px rgba(15,76,129,.06)}
.case-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(15,76,129,.12);border-color:var(--c-primary)}
.case-card[data-category="mining"]{border-left:4px solid #0F4C81}
.case-card[data-category="port"]{border-left:4px solid #1E6BA8}
.case-card[data-category="truck"]{border-left:4px solid #2E8B57}
.case-card[data-category="moto"]{border-left:4px solid #FF7828}
.case-card[data-category="export"]{border-left:4px solid #6B5B95}
.case-header{padding:22px 22px 12px}
.case-cat{display:inline-block;padding:4px 10px;border-radius:4px;font-size:11px;font-weight:600;color:#fff;margin-bottom:10px;letter-spacing:.5px}
.case-card[data-category="mining"] .case-cat{background:#0F4C81}
.case-card[data-category="port"] .case-cat{background:#1E6BA8}
.case-card[data-category="truck"] .case-cat{background:#2E8B57}
.case-card[data-category="moto"] .case-cat{background:#FF7828}
.case-card[data-category="export"] .case-cat{background:#6B5B95}
.case-img{width:100%;height:172px;overflow:hidden;background:linear-gradient(135deg,#0F4C81,#1a2733);position:relative}
.case-img img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .4s}
.case-card:hover .case-img img{transform:scale(1.05)}
.case-header h4{font-size:16px;font-weight:700;color:var(--text-dark);line-height:1.4;margin:0}
.case-body{padding:0 22px 16px;flex:1}
.case-row{display:flex;gap:10px;margin-bottom:10px;line-height:1.55}
.case-row .label{flex-shrink:0;min-width:48px;font-size:11px;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;line-height:1.8}
.case-row p{flex:1;font-size:13px;color:var(--text-body);margin:0}
.case-result{margin:0 22px 16px;padding:14px 16px;border-radius:10px;background:linear-gradient(135deg,rgba(15,76,129,.06),rgba(15,76,129,.03));border-left:3px solid var(--c-primary)}
.case-result .label{display:block;font-size:11px;font-weight:700;color:var(--c-primary);margin-bottom:6px;letter-spacing:.5px}
.case-result p{font-size:13px;color:var(--text-dark);font-weight:600;margin:0}
.case-meta{display:block;padding:12px 22px;border-top:1px solid var(--border);font-size:12px;color:var(--c-primary);font-weight:600;background:rgba(15,76,129,.02)}

/* ========== CTA Section ========== */
.cta-section{background:linear-gradient(135deg,var(--c-primary-dark),var(--c-primary));padding:60px 0;text-align:center;position:relative;overflow:hidden}
.cta-section::before{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:40px 40px}
.cta-section h2{font-size:28px;color:#fff;margin-bottom:12px;position:relative;z-index:2}
.cta-section p{font-size:15px;color:rgba(255,255,255,.75);margin-bottom:28px;position:relative;z-index:2}
.cta-section .btn-group{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;position:relative;z-index:2}

/* ========== Filter Tabs ========== */
.filter-bar{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;margin-bottom:40px}
.filter-tab{padding:8px 24px;border-radius:24px;border:1px solid var(--border);font-size:14px;color:var(--text-body);cursor:pointer;transition:all .2s;background:#fff}
.filter-tab.active{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
.filter-tab:hover:not(.active){border-color:var(--c-primary);color:var(--c-primary)}

/* ========== Product Detail Module ========== */
.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.detail-gallery .main-img{position:relative;height:400px;background:linear-gradient(135deg,#f5f7fa,#e2eaf2);border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;margin-bottom:12px;overflow:hidden}
.detail-gallery .main-img .icon{font-size:100px}
.detail-gallery .main-img .icon:empty::after{content:'产品图片';font-size:16px;font-weight:600;color:var(--c-primary);opacity:.3}
.detail-gallery .main-img img{width:100%;height:100%;object-fit:cover;border-radius:var(--radius-lg)}
.detail-gallery .main-img .prod-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:2}
.detail-gallery .main-img .img-ph{position:absolute;inset:0;z-index:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;background:linear-gradient(135deg,#0F4C81,#1a2733);color:#fff;text-align:center;padding:20px}
.detail-gallery .main-img .img-ph .ph-radar{width:96px;height:96px}
.detail-gallery .main-img .img-ph .ph-name{font-size:18px;font-weight:700;line-height:1.3;padding:0 12px}
.detail-gallery .main-img .img-ph .ph-code{font-size:12px;opacity:.6;letter-spacing:1px;font-family:var(--font-en)}
.detail-gallery .thumbs{display:flex;gap:12px}
.detail-gallery .thumb{width:80px;height:80px;background:var(--bg-light);border:2px solid var(--border);border-radius:8px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:28px;transition:border-color .2s;overflow:hidden}
.detail-gallery .thumb:empty::after{content:'IMG';font-size:11px;font-weight:600;color:var(--text-muted);opacity:.4}
.detail-gallery .thumb img{width:100%;height:100%;object-fit:cover}
.detail-gallery .thumb:hover,.detail-gallery .thumb.active{border-color:var(--c-primary)}
.detail-info h2{font-size:26px;margin-bottom:8px}
.detail-info .en-name{font-size:14px;color:var(--c-primary);margin-bottom:16px;font-family:var(--font-en)}
.detail-info .pain-points{background:var(--bg-light);border-left:3px solid var(--c-orange);padding:16px 20px;border-radius:0 8px 8px 0;margin-bottom:24px}
.detail-info .pain-points h5{font-size:14px;color:var(--c-orange);margin-bottom:8px}
.detail-info .pain-points ul li{font-size:13px;color:var(--text-body);margin-bottom:4px;padding-left:16px;position:relative}
.detail-info .pain-points ul li::before{content:'✓';position:absolute;left:0;color:var(--c-orange)}

.spec-table{width:100%;border-collapse:collapse;margin-bottom:24px}
.spec-table th{background:var(--bg-light);padding:12px 16px;font-size:13px;color:var(--text-dark);text-align:left;border:1px solid var(--border);width:30%}
.spec-table td{padding:12px 16px;font-size:13px;color:var(--text-body);border:1px solid var(--border)}

.detail-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ========== Form ========== */
.form-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:36px;box-shadow:var(--shadow-sm)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:13px;color:var(--text-dark);margin-bottom:6px;font-weight:500}
.form-group label .req{color:var(--c-orange)}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:11px 14px;border:1px solid var(--border);border-radius:var(--radius);font-size:14px;color:var(--text-dark);background:#fff;transition:border-color .2s}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(15,76,129,.08)}
.form-group textarea{resize:vertical;min-height:100px}

.form-success{display:none;text-align:center;padding:40px 20px}
.form-success.show{display:block}
.form-success .icon{width:64px;height:64px;margin:0 auto 16px;border-radius:50%;background:rgba(15,76,129,.08);display:flex;align-items:center;justify-content:center;font-size:28px;color:var(--c-primary)}
.form-success h3{font-size:20px;margin-bottom:8px}
.form-success p{color:var(--text-muted);font-size:14px}

/* ========== Timeline ========== */
.timeline{position:relative;padding-left:40px}
.timeline::before{content:'';position:absolute;left:12px;top:0;bottom:0;width:2px;background:var(--border)}
.timeline-item{position:relative;padding-bottom:32px}
.timeline-item::before{content:'';position:absolute;left:-34px;top:4px;width:14px;height:14px;border-radius:50%;background:var(--c-primary);border:3px solid #fff;box-shadow:0 0 0 2px var(--c-primary)}
.timeline-item .year{font-size:14px;font-weight:700;color:var(--c-primary);margin-bottom:4px}
.timeline-item .title{font-size:15px;font-weight:600;margin-bottom:4px}
.timeline-item .desc{font-size:13px;color:var(--text-muted)}

/* ========== FAQ ========== */
.faq-item{border:1px solid var(--border);border-radius:var(--radius);margin-bottom:12px;overflow:hidden}
.faq-q{padding:16px 20px;font-size:14px;font-weight:600;color:var(--text-dark);cursor:pointer;display:flex;justify-content:space-between;align-items:center;background:#fff;transition:background .2s}
.faq-q:hover{background:var(--bg-light)}
.faq-q .arrow{transition:transform .3s;font-size:14px;color:var(--c-primary)}
.faq-q.open .arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a.open{max-height:300px}
.faq-a .inner{padding:0 20px 16px;font-size:13px;color:var(--text-muted);line-height:1.7}

/* ========== Download Card ========== */
.download-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.download-card{display:flex;align-items:center;gap:14px;padding:16px 20px;border:1px solid var(--border);border-radius:var(--radius);background:#fff;transition:all .2s;cursor:pointer}
.download-card:hover{border-color:var(--c-primary);box-shadow:var(--shadow-sm)}
.download-card .file-icon{width:40px;height:40px;border-radius:8px;background:rgba(15,76,129,.08);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.download-card .info{flex:1}
.download-card .info h5{font-size:14px;margin-bottom:2px}
.download-card .info p{font-size:12px;color:var(--text-muted)}
.download-card .dl-icon{color:var(--c-primary);font-size:18px}

/* ========== Solutions Product Cards ========== */
.sol-sub{font-size:14px;line-height:1.7;color:var(--c-orange);margin-bottom:24px;font-weight:500}
.sol-products{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:40px}
.sol-prod-card{border:1px solid var(--border);border-radius:12px;padding:18px;background:#fff;transition:all .25s;display:flex;flex-direction:column}
.sol-prod-card:hover{border-color:var(--c-primary);box-shadow:var(--shadow-sm);transform:translateY(-3px)}
.sol-img{position:relative;width:100%;height:170px;border-radius:8px;overflow:hidden;margin-bottom:14px;background:#0a3a64}
.sol-img img{width:100%;height:100%;object-fit:cover;display:block}
.sol-img .img-ph{display:none;position:absolute;inset:0;flex-direction:column;align-items:center;justify-content:center;gap:6px;background:linear-gradient(135deg,#0F4C81,#1a2733);color:#fff;text-align:center;padding:10px}
.sol-img.no-img img{display:none}
.sol-img.no-img .img-ph{display:flex}
.sol-img .img-ph .ph-radar{width:48px;height:48px;margin-bottom:4px}
.sol-img .img-ph .ph-name{font-size:12px;font-weight:600;line-height:1.3;padding:0 8px}
.sol-img .img-ph .ph-code{font-size:9px;opacity:.6;letter-spacing:1px}
.sol-prod-card h4{font-size:15px;color:var(--text-dark);margin-bottom:10px;line-height:1.4}
.sol-spec{list-style:none;padding:0;margin:0 0 12px}
.sol-spec li{display:flex;justify-content:space-between;font-size:12.5px;padding:5px 0;border-bottom:1px dashed var(--border)}
.sol-spec li:last-child{border-bottom:none}
.sol-spec li span{color:var(--text-muted)}
.sol-spec li b{color:var(--text-dark);font-weight:600;text-align:right}
.sol-more{margin-top:auto;font-size:13px;color:var(--c-primary);font-weight:600;text-decoration:none}
.sol-more:hover{text-decoration:underline}
@media(max-width:768px){.sol-products{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.sol-products{grid-template-columns:1fr}}

/* ========== Section Header (shared) ========== */
.section-head{text-align:center;max-width:720px;margin:0 auto 48px}
.section-tag{display:inline-block;font-family:var(--font-en);font-size:13px;letter-spacing:3px;color:var(--c-primary);margin-bottom:12px;font-weight:600}
.section-head h2{font-size:28px;margin-bottom:10px;color:var(--text-dark)}
.section-head p{font-size:15px;color:var(--text-muted)}

/* ========== News Channel ========== */
.news-hero{background:linear-gradient(135deg,var(--c-primary-dark),var(--c-primary));padding:90px 0 70px;text-align:center;position:relative;overflow:hidden;color:#fff}
.news-hero::before{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:40px 40px}
.news-hero .section-tag{color:rgba(255,255,255,.7)}
.news-hero h1{font-size:34px;margin-bottom:14px;position:relative;z-index:2}
.news-hero p{font-size:15px;color:rgba(255,255,255,.8);max-width:640px;margin:0 auto;position:relative;z-index:2}

.news-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:all .3s;text-decoration:none;color:inherit}
.news-card:hover{border-color:var(--c-primary);box-shadow:var(--shadow-lg);transform:translateY(-3px)}
.news-meta{display:flex;align-items:center;gap:10px;padding:18px 20px 0;flex-wrap:wrap}
.news-date{font-size:12px;color:var(--text-muted);font-family:var(--font-en)}
.news-cat{padding:3px 10px;border-radius:4px;font-size:11px;color:#fff;font-weight:500;white-space:nowrap}
.news-cat.cat-regulation{background:#1f8a70}
.news-cat.cat-product{background:var(--c-primary)}
.news-cat.cat-case{background:#c0504d}
.news-cat.cat-company{background:var(--c-primary-dark)}
.news-cat.cat-industry{background:var(--c-orange)}
.news-title{font-size:16px;margin:12px 20px 8px;line-height:1.45;color:var(--text-dark)}
.news-summary{font-size:13px;color:var(--text-muted);line-height:1.6;margin:0 20px 16px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-more{margin:auto 20px 20px;font-size:13px;color:var(--c-primary);font-weight:600}
.news-card:hover .news-more{text-decoration:underline}
.news-cover{height:170px;background:linear-gradient(135deg,#eef2f7,#d8dee3);overflow:hidden}
.news-cover img{width:100%;height:100%;object-fit:cover;display:block}
.news-cover-ph{display:flex;align-items:center;justify-content:center}
.news-cover-ph span{padding:4px 14px;border-radius:4px;background:rgba(15,76,129,.85);color:#fff;font-size:12px}
.news-empty{grid-column:1/-1;text-align:center;color:var(--text-muted);padding:40px 0}

.container-narrow{max-width:860px;margin:0 auto}
.news-back{display:inline-block;margin-bottom:24px;color:var(--c-primary);font-size:14px;text-decoration:none;font-weight:600}
.news-back:hover{text-decoration:underline}
.news-detail{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:40px}
.news-detail .news-meta{padding:0;margin-bottom:14px}
.news-detail-title{font-size:28px;line-height:1.3;margin:0 0 20px;color:var(--text-dark)}
.news-detail-body{font-size:15px;line-height:1.9;color:var(--text-body)}
.news-detail-body p{margin:0 0 16px}
.news-detail-foot{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px;padding-top:24px;border-top:1px solid var(--border)}
.news-detail-cover{margin:0 0 24px;border-radius:var(--radius-md);overflow:hidden;max-height:380px;background:linear-gradient(135deg,#eef2f7,#d8dee3)}
.news-detail-cover img{width:100%;max-height:380px;object-fit:cover;display:block}
.news-notfound{text-align:center;padding:60px 20px}
.news-notfound p{color:var(--text-muted);margin-bottom:20px}

/* ========== Contact Items ========== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.contact-info-item{display:flex;gap:14px;margin-bottom:20px}
.contact-info-item .icon{width:44px;height:44px;border-radius:10px;background:rgba(15,76,129,.08);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.contact-info-item .info h5{font-size:13px;color:var(--text-muted);margin-bottom:2px}
.contact-info-item .info p{font-size:14px;color:var(--text-dark);font-weight:500}

/* ========== Client Logo Wall ========== */
.logo-wall{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.logo-wall-item{height:80px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--text-muted);text-align:center;padding:8px;transition:all .2s}
.logo-wall-item:hover{border-color:var(--c-primary);color:var(--c-primary)}

/* ========== Footer ========== */
.footer{background:var(--bg-dark);color:rgba(255,255,255,.6);padding:60px 0 24px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr 1fr;gap:36px;margin-bottom:40px}
.footer-brand .logo{color:#fff;margin-bottom:14px}
.footer-brand .logo-text .zh{color:#fff}
.footer-brand .logo-text .en{color:rgba(255,255,255,.5)}
.footer-brand p{font-size:13px;line-height:1.7;max-width:280px}
.footer-col h5{font-size:14px;color:#fff;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:13px;color:rgba(255,255,255,.5);transition:color .2s}
.footer-col ul li a:hover{color:var(--c-orange)}
.footer-bottom{padding-top:24px;border-top:1px solid var(--border-dark);display:flex;justify-content:space-between;align-items:center;font-size:12px;color:rgba(255,255,255,.4);flex-wrap:wrap;gap:10px}

/* ========== Scroll Reveal ========== */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:translateY(0)}

/* ========== Responsive ========== */
@media(max-width:1024px){
    .nav-menu{display:none}
    .nav-toggle{display:flex}
    .nav-menu.open{display:flex;flex-direction:column;position:absolute;top:var(--header-h);left:0;right:0;background:#fff;padding:20px 24px;gap:16px;border-bottom:1px solid var(--border);box-shadow:var(--shadow)}
    .adv-grid,.product-grid,.sol-grid,.stats-row{grid-template-columns:repeat(2,1fr)}
    .case-grid,.news-list{grid-template-columns:repeat(2,1fr)}
    .download-grid{grid-template-columns:repeat(2,1fr)}
    .logo-wall{grid-template-columns:repeat(4,1fr)}
    .footer-grid{grid-template-columns:1fr 1fr 1fr}
    .detail-grid,.contact-grid{grid-template-columns:1fr;gap:32px}
}
@media(max-width:768px){
    .hero-slide-content h1{font-size:28px}
    .hero-slide-content p{font-size:14px}
    .section-title{font-size:24px}
    .section{padding:50px 0}
    .section-lg{padding:60px 0}
    .adv-grid,.product-grid,.sol-grid,.stats-row,.case-grid,.news-list,.download-grid,.logo-wall{grid-template-columns:1fr 1fr}
    .form-row{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr 1fr}
    .hero-arrow{display:none}
    .radar-ripple{display:none}
    .float-widgets{right:8px;bottom:80px}
    .float-btn{width:44px;height:44px}
    .float-btn .label{display:none}
}
@media(max-width:480px){
    .hero-slide-content h1{font-size:22px}
    .adv-grid,.product-grid,.sol-grid,.stats-row,.case-grid,.news-list,.download-grid,.logo-wall{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr}
    .footer-bottom{flex-direction:column;text-align:center}
    .container{padding:0 16px}
    .form-card{padding:20px}
}

/* ========== RTL（阿拉伯语）镜像 + 字体回退 ========== */
.lang-ar, html[dir="rtl"] {
    font-family: "Segoe UI", Tahoma, "Noto Sans Arabic", "Microsoft YaHei", sans-serif;
}
html[dir="rtl"] body { text-align: right; }
html[dir="rtl"] .container { direction: rtl; }
html[dir="rtl"] .float-widgets { right: auto; left: 8px; }
html[dir="rtl"] .header-right { flex-direction: row-reverse; }
html[dir="rtl"] .nav-menu { flex-direction: row-reverse; }
html[dir="rtl"] .product-card .info,
html[dir="rtl"] .case-card,
html[dir="rtl"] .sol-prod-card { text-align: right; }
html[dir="rtl"] .filter-bar,
html[dir="rtl"] .footer-grid,
html[dir="rtl"] .news-card { direction: rtl; text-align: right; }
html[dir="rtl"] .hero-arrow.next,
html[dir="rtl"] .hero-arrow.prev { transform: scaleX(-1); }
html[dir="rtl"] .btn-group { direction: ltr; }
/* 数字 / 产品型号 / 日期保持 LTR，避免阿拉伯语境下错乱 */
html[dir="rtl"] .stat-number,
html[dir="rtl"] .spec-tag,
html[dir="rtl"] .case-meta,
html[dir="rtl"] .news-date,
html[dir="rtl"] .news-cat { direction: ltr; display: inline-block; unicode-bidi: isolate; }

/* 行业方案：部署拓扑 / 检测区域 / ROI 多语言信息块 */
.sol-extra{background:var(--bg-light);border:1px solid var(--border);border-radius:12px;padding:22px 24px;margin-bottom:20px}
.sol-extra h4{font-size:15px;color:var(--c-orange);margin-bottom:10px;font-weight:600}
.sol-extra p{font-size:14px;line-height:1.8;color:var(--text-body);margin:0}
html[dir="rtl"] .sol-extra{text-align:right}