:root{--ink:#0b1c36;--ink-deep:#061325;--blue:#0b58a6;--cyan:#22a5d6;--orange:#ff812e;--paper:#f6f8fb;--line:#dbe4ec;--muted:#6f7e91;--radius:12px;--shadow:0 18px 45px rgba(5,28,57,.09)}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:#fff;font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.container{width:min(1180px,calc(100% - 48px));margin:0 auto}
.topline{background:var(--ink-deep);color:#9eafc4;font-size:11px;letter-spacing:.16em;text-transform:uppercase}
.topline-inner{height:32px;display:flex;justify-content:space-between;align-items:center}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(16px);border-bottom:1px solid rgba(219,228,236,.75)}
.nav-wrap{height:80px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:12px}
.brand img{width:176px;height:54px;object-fit:contain;object-position:center;mix-blend-mode:multiply}
.brand-text{display:none}
.main-nav{display:flex;align-items:center;gap:30px;font-size:13px;color:#516277}
.main-nav a{transition:color .2s ease}
.main-nav a:hover{color:var(--blue)}
.nav-cta{color:var(--ink)!important;border:1px solid var(--ink);padding:12px 16px;border-radius:999px;font-weight:600}
.nav-cta span{color:var(--orange);margin-left:7px}
.menu-toggle{display:none;border:0;background:transparent}
.hero{background:linear-gradient(120deg,#f4f7fb 0%,#fff 57%);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(400px, .93fr);min-height:600px;align-items:center;gap:80px;padding:64px 0 48px}
.eyebrow,.section-label{font-size:11px;letter-spacing:.17em;color:var(--blue);font-weight:700;text-transform:uppercase}
.eyebrow{display:flex;align-items:center;gap:10px}
.eyebrow-line{width:32px;height:2px;background:var(--orange)}
h1,h2,h3,p{margin:0}
h1{margin-top:25px;font-size:clamp(42px,5vw,68px);line-height:1.08;letter-spacing:-.065em;max-width:680px}
h2{font-size:clamp(32px,4vw,50px);line-height:1.12;letter-spacing:-.055em}
h3{font-size:18px;letter-spacing:-.02em}
.hero-lead{max-width:560px;color:#627288;font-size:16px;line-height:1.9;margin-top:28px}
.hero-actions{display:flex;gap:12px;margin-top:35px}
.button{display:inline-flex;align-items:center;gap:18px;padding:15px 21px;border-radius:999px;font-size:13px;font-weight:700;transition:transform .2s ease,box-shadow .2s ease}
.button:hover{transform:translateY(-2px)}
.button-primary{background:var(--orange);color:var(--ink);box-shadow:0 12px 24px rgba(255,129,46,.22)}
.button-primary span{font-size:18px;line-height:0}
.button-ghost{border:1px solid #ccd7e2;color:var(--ink)}
.hero-proof{display:flex;gap:22px;margin-top:55px;color:#7c8b9e;font-size:11px;letter-spacing:.1em}
.hero-proof span{display:flex;align-items:center;gap:8px}
.hero-proof span::before{content:"";width:5px;height:5px;background:var(--cyan);border-radius:50%}
.hero-visual{position:relative;min-height:500px;background:var(--ink);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.visual-grid{position:absolute;inset:0;opacity:.5;background-image:linear-gradient(rgba(121,168,210,.12) 1px,transparent 1px),linear-gradient(90deg,rgba(121,168,210,.12) 1px,transparent 1px);background-size:42px 42px;mask-image:linear-gradient(135deg,black,transparent 82%)}
.hero-visual::before{content:"";position:absolute;inset:-18%;background:radial-gradient(circle at 62% 36%,rgba(39,171,215,.4),transparent 27%),radial-gradient(circle at 30% 72%,rgba(22,87,177,.7),transparent 35%)}
.visual-orbit{position:absolute;border:1px solid rgba(126,214,244,.35);border-radius:50%;transform:rotate(-24deg)}
.orbit-one{width:430px;height:190px;right:-86px;top:100px}
.orbit-two{width:500px;height:240px;right:-122px;top:75px;border-color:rgba(255,129,46,.28)}
.hero-visual-note{position:absolute;top:28px;left:30px;color:#b8cee2;font-size:10px;letter-spacing:.14em;text-transform:uppercase;display:flex;align-items:center;gap:8px}
.status-dot{width:7px;height:7px;border-radius:50%;background:#52d1a7;box-shadow:0 0 0 5px rgba(82,209,167,.12)}
.hero-visual-copy{position:absolute;left:48px;top:168px;color:#fff}
.visual-kicker{font-size:10px;letter-spacing:.18em;color:#71bee1}
.hero-visual-copy strong{display:block;margin-top:15px;font-size:54px;line-height:1.04;letter-spacing:-.06em}
.hero-visual-copy em{color:#53c1df;font-style:normal}
.hero-specs{position:absolute;bottom:26px;left:30px;right:30px;display:grid;grid-template-columns:repeat(3,1fr);gap:18px;border-top:1px solid rgba(199,223,239,.2);padding-top:18px}
.hero-specs div{display:flex;flex-direction:column;gap:7px}
.hero-specs small{color:#6bbddc;font-size:10px;letter-spacing:.15em}
.hero-specs span{color:#f2f8fb;font-size:12px}
.hero-bottom{height:62px;display:flex;align-items:center;gap:32px;border-top:1px solid var(--line);color:#8290a0;font-size:11px;letter-spacing:.12em}
.hero-bottom .scroll-hint{margin-left:auto;color:var(--blue)}
.hero-bottom b{font-size:16px;margin-left:7px;color:var(--orange)}
.section-pad{padding:120px 0}
.intro{background:#fff}
.intro-grid{display:grid;grid-template-columns:200px minmax(0,1fr);gap:80px}
.section-label{display:flex;gap:12px;align-items:center}
.section-label span{color:var(--orange);font-family:monospace;font-size:12px}
.section-label b{font-size:11px;letter-spacing:.16em}
.intro-content h2{max-width:690px}
.intro-columns{display:grid;grid-template-columns:1fr 1fr;gap:44px;margin-top:35px}
.intro-columns p{color:#66768a;font-size:15px;line-height:1.95}
.text-link,.card-link{display:inline-flex;align-items:center;gap:12px;color:var(--blue);font-weight:700;font-size:13px;margin-top:30px}
.text-link span,.card-link span{color:var(--orange);font-size:17px}
.products{background:var(--paper)}
.section-heading{display:grid;grid-template-columns:200px 1fr;gap:80px;margin-bottom:55px}
.section-heading h2{max-width:600px}
.section-heading p{margin-top:22px;color:var(--muted);font-size:14px;line-height:1.8}
.product-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.product-card{grid-column:span 1;background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid #e1e8ef;transition:transform .25s ease,box-shadow .25s ease}
.product-card:hover{border-color:#aabed0}
.product-card-feature{grid-column:span 2}
.product-image-slot{aspect-ratio:4/3;height:auto;position:relative;padding:22px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;overflow:hidden;background:#eef3f7!important;border-bottom:1px solid #e1e8ef}
.product-card-feature .product-image-slot{height:auto}
.product-image-slot::before{display:none}
.product-image-slot.has-image{padding:0;background:#fff!important}
.product-image-slot.has-image img{display:block;width:100%;height:100%;object-fit:contain;object-position:center;padding:20px;background:#fff}
.slot-blue,.slot-slate,.slot-steel,.slot-navy,.slot-safety{background:#eef3f7!important}
.product-image-slot span,.product-image-slot b,.product-image-slot small{position:relative;z-index:1;color:var(--ink)}
.product-image-slot span{font-size:9px;letter-spacing:.15em;text-transform:uppercase;color:var(--blue);margin-bottom:11px}
.product-image-slot b{font-size:21px;letter-spacing:-.04em}
.product-image-slot small{font-size:11px;line-height:1.55;color:#718094;margin-top:7px;max-width:260px}
.product-card-body{padding:25px 24px 26px}
.product-card-body>div{display:flex;align-items:baseline;gap:12px}
.product-index{color:var(--orange);font:11px monospace}
.product-card-body p{color:#718094;font-size:13px;line-height:1.8;margin-top:16px}
.product-card-body .card-link{margin-top:22px}
.capability{background:#fff}
.capability-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:120px}
.capability-intro h2{margin-top:26px;max-width:470px}
.capability-intro p{margin-top:27px;color:#6b7b8e;line-height:1.9;font-size:14px;max-width:440px}
.capability-list{border-top:1px solid var(--line)}
.capability-item{display:grid;grid-template-columns:40px 1fr 18px;gap:20px;align-items:start;padding:25px 0;border-bottom:1px solid var(--line)}
.capability-number{color:var(--orange);font:12px monospace}
.capability-item h3{font-size:17px}
.capability-item p{color:#6d7c8e;font-size:13px;line-height:1.7;margin-top:8px}
.capability-item>span{color:var(--blue);font-size:17px}
.equipment-strip{margin-top:92px;padding-top:25px;border-top:1px solid var(--line);display:grid;grid-template-columns:200px 1fr;gap:80px;align-items:start}
.equipment-strip>span{font-size:11px;letter-spacing:.14em;color:var(--muted)}
.equipment-tags{display:flex;flex-wrap:wrap;gap:10px}
.equipment-tags b{font-size:12px;font-weight:500;color:#5c6e82;border:1px solid var(--line);border-radius:999px;padding:10px 14px}
.environment{background:var(--paper)}
.environment-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:16px}
.environment-slot{height:360px;border-radius:var(--radius);overflow:hidden;position:relative;background:#273950}
.env-large{height:460px}
.environment-slot::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(3,17,35,.85) 100%)}
.slot-pattern{position:absolute;inset:0}
.pattern-1{background:radial-gradient(circle at 60% 35%,rgba(63,184,223,.65),transparent 23%),linear-gradient(145deg,#0c2f60,#07172f 66%)}
.pattern-2{background:linear-gradient(120deg,#9baab4,#425d73 38%,#091f3b 100%)}
.pattern-3{background:radial-gradient(circle at 30% 28%,rgba(255,147,72,.85),transparent 18%),linear-gradient(145deg,#4f3e43,#112541 62%,#08172e)}
.slot-pattern::before{content:"";position:absolute;inset:12%;border:1px solid rgba(187,222,238,.32);transform:skewY(-8deg);box-shadow:0 0 0 30px rgba(255,255,255,.035),0 0 0 60px rgba(255,255,255,.025)}
.pattern-1::after{content:"FIELD PHOTO SLOT";position:absolute;left:12%;top:24%;font:11px monospace;letter-spacing:.22em;color:rgba(218,242,250,.65)}
.environment-slot figcaption{position:absolute;z-index:1;left:25px;bottom:23px;color:#fff;display:flex;flex-direction:column}
.environment-slot figcaption span{font:10px monospace;color:#97d0e3;letter-spacing:.15em}
.environment-slot figcaption b{font-size:20px;margin-top:9px;letter-spacing:-.03em}
.environment-slot figcaption small{font-size:11px;color:rgba(255,255,255,.7);margin-top:7px}
.contact{background:#fff;padding-bottom:130px}
.contact-panel{background:var(--ink);border-radius:var(--radius);display:grid;grid-template-columns:1.1fr .9fr;gap:80px;padding:65px 72px;position:relative;overflow:hidden}
.contact-panel::before{content:"";position:absolute;width:480px;height:480px;border:1px solid rgba(119,190,220,.2);border-radius:50%;right:-140px;top:-170px}
.contact-copy,.contact-details{position:relative;z-index:1}
.contact-copy h2{color:#fff;max-width:560px;margin-top:25px}
.contact-copy p{color:#a9bdd0;line-height:1.8;font-size:14px;max-width:475px;margin-top:20px}
.button-light{background:#fff;color:var(--ink);margin-top:28px}
.contact-details{display:flex;flex-direction:column;justify-content:center;gap:28px}
.contact-detail{border-top:1px solid rgba(194,218,234,.2);padding-top:18px}
.contact-detail small{color:#7faac4;font-size:10px;letter-spacing:.14em}
.contact-detail small em{font-style:normal;color:var(--orange);margin-left:7px}
.contact-detail a{display:block;color:#fff;font-size:27px;font-weight:600;letter-spacing:-.03em;margin-top:9px}
.contact-detail p{color:#d1e0eb;font-size:14px;line-height:1.7;margin-top:9px}
.light{color:#a9d5e7}
.site-footer{background:var(--ink-deep);color:#8194a9}
.footer-top{display:flex;justify-content:space-between;align-items:center;padding:46px 0 40px;border-bottom:1px solid rgba(189,212,231,.14)}
.footer-brand img{background:#fff;border-radius:5px}
.footer-brand .brand-text b{color:#fff}
.footer-brand .brand-text small{color:#6fb7db}
.footer-links{display:flex;gap:25px;font-size:12px}
.footer-links a:hover{color:#fff}
.footer-bottom{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:18px;padding:22px 0 28px;font-size:10px;letter-spacing:.05em}
.footer-copy{justify-self:end}
.beian{justify-self:center;color:inherit;text-decoration:none}
.beian:hover{color:#fff}
.reveal{opacity:1;transform:none;transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:translateY(0)}
.delay-1{transition-delay:.1s}
.delay-2{transition-delay:.2s}
@media (max-width:900px){.container{width:min(100% - 36px,680px)}
.main-nav{gap:16px}
.hero-grid{grid-template-columns:1fr;gap:35px;padding-top:52px}
.hero-visual{min-height:430px}
.hero-bottom{overflow:auto;white-space:nowrap}
.intro-grid,.section-heading,.equipment-strip{grid-template-columns:1fr;gap:25px}
.section-heading{margin-bottom:40px}
.product-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
.product-card,.product-card-feature{grid-column:span 1}
.product-card-feature .product-image-slot,.product-image-slot{height:auto}
.capability-grid{grid-template-columns:1fr;gap:55px}
.environment-grid{grid-template-columns:1fr 1fr}
.env-large{grid-column:span 2;height:380px}
.contact-panel{grid-template-columns:1fr;gap:45px;padding:48px 42px}
}
@media (max-width:680px){.container{width:calc(100% - 32px)}
.topline-inner{height:28px;font-size:9px}
.topline-inner span:last-child{display:none}
.nav-wrap{height:70px}
.brand img{width:150px;height:46px}
.brand-text b{font-size:14px}
.main-nav{display:none;position:absolute;left:16px;right:16px;top:70px;background:#fff;box-shadow:var(--shadow);border:1px solid var(--line);border-radius:12px;padding:18px;flex-direction:column;align-items:stretch;gap:0}
.main-nav.open{display:flex}
.main-nav a{padding:14px 8px;border-bottom:1px solid #edf1f5}
.main-nav .nav-cta{margin-top:10px;text-align:center;border:1px solid var(--ink)}
.menu-toggle{display:flex;flex-direction:column;gap:6px;padding:8px}
.menu-toggle span{display:block;width:22px;height:2px;background:var(--ink)}
h1{font-size:43px}
.hero-lead{font-size:15px}
.hero-proof{flex-direction:column;gap:10px;margin-top:35px}
.hero-visual{min-height:390px}
.hero-visual-copy{left:28px;top:130px}
.hero-visual-copy strong{font-size:43px}
.hero-specs{left:22px;right:22px;gap:8px}
.hero-specs span{font-size:10px}
.hero-bottom{gap:18px;height:55px}
.section-pad{padding:80px 0}
.intro-columns{grid-template-columns:1fr;gap:18px}
.product-grid{grid-template-columns:1fr}
.product-card,.product-card-feature{grid-column:span 1}
.product-card-feature .product-image-slot,.product-image-slot{height:auto}
.environment-grid{grid-template-columns:1fr}
.env-large{grid-column:span 1;height:340px}
.environment-slot{height:300px}
.contact{padding-bottom:85px}
.contact-panel{padding:36px 24px}
.contact-detail a{font-size:22px}
.footer-top,.footer-bottom{display:flex;flex-direction:column;align-items:flex-start;gap:25px}
.footer-links{flex-wrap:wrap;gap:16px}
.footer-bottom{font-size:9px;line-height:1.7;gap:8px}
}

@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}
.reveal{opacity:1;transform:none;transition:none}
.button,.product-card{transition:none}
}




/* Stable media slots preserve the full image and keep captions outside the image. */
.product-card{display:flex;flex-direction:column;min-width:0}
.product-card-body{flex:1;display:flex;flex-direction:column}
.product-card-body .card-link{margin-top:auto;padding-top:22px}
.product-image-slot{aspect-ratio:4/3;min-width:0}
.product-image-slot img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;padding:18px;opacity:0;background:#fff}
.product-image-slot.has-image img{opacity:1}
.product-image-slot.has-image>span{visibility:hidden}
.product-image-slot span{font-size:13px;letter-spacing:0;color:#5a6b7e;margin:0}
.environment-slot img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;opacity:0;background:#eef3f7;padding:12px}
.environment-slot.has-image{background:#eef3f7}
.environment-slot.has-image img{opacity:1}
.environment-slot.has-image .slot-pattern,.environment-slot.has-image::after{display:none}
.environment-slot.has-image figcaption{background:rgba(6,19,37,.9);padding:12px;left:0;right:0;bottom:0}
.motion-ready .reveal:not(.visible){opacity:0;transform:translateY(20px)}
section[id],main[id]{scroll-margin-top:100px}
a:focus-visible,button:focus-visible{outline:3px solid #0b58a6;outline-offset:5px}
.button{white-space:nowrap}
.brand img{width:230px;height:58px}
.skip-link{position:fixed;left:16px;top:-100px;z-index:100;background:#fff;padding:12px;color:var(--ink)}
.skip-link:focus{top:12px}
.hero-proof{flex-wrap:wrap}
.hero-actions{flex-wrap:wrap}

@media(max-width:680px){.brand img{width:210px;height:52px}
h1{font-size:clamp(28px,7.9vw,43px);letter-spacing:-.04em}
.hero-grid{padding:40px 0}
.hero-actions{gap:8px}
.button{padding:14px 18px}
.environment-slot.has-image img{padding-bottom:100px}
}
@media(prefers-reduced-motion:reduce){.motion-ready .reveal:not(.visible){opacity:1;transform:none}
}

/* 资质证书模块 */
.certificates{background:#fff}
.certificate-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.certificate-card{margin:0;background:#fff;border:1px solid #e1e8ef;border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.certificate-card:hover{transform:translateY(-4px);border-color:#aabed0;box-shadow:var(--shadow)}
.certificate-slot{position:relative;aspect-ratio:3/4;display:flex;align-items:center;justify-content:center;background:#eef3f7;border-bottom:1px solid #e1e8ef;overflow:hidden}
.certificate-slot::before{content:"";position:absolute;inset:16px;border:1px dashed #c3d2df;border-radius:4px}
.certificate-slot span{position:relative;z-index:1;font-size:12px;letter-spacing:.08em;color:#8a99ab}
.certificate-slot img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;opacity:0;background:#fff;padding:16px}
.certificate-slot.has-image{background:#fff}
.certificate-slot.has-image img{opacity:1}
.certificate-slot.has-image::before{display:none}
.certificate-slot.has-image span{visibility:hidden}
.certificate-card figcaption{padding:18px 20px 20px}
.certificate-card figcaption b{display:block;font-size:14px;letter-spacing:-.01em}
.certificate-card figcaption small{display:block;margin-top:6px;font-size:12px;color:#8a99ab;line-height:1.6}
@media(max-width:900px){.certificate-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:680px){.certificate-grid{gap:16px}.certificate-card figcaption{padding:14px 14px 16px}.certificate-card figcaption b{font-size:13px}}

/* 开场加载动画（严格按提供的动画代码） */
body.is-loading{overflow:hidden} /* 开场动画期间禁止滚动 */
#loader{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#fff;display:flex;justify-content:center;align-items:center;z-index:9999;transition:transform .8s cubic-bezier(.77,0,.175,1),opacity .8s ease;animation:loaderSafety .6s ease 4.5s forwards} /* animation 为兜底：JS 失效时遮罩自动隐藏，避免白屏 */
#loader.hide{transform:translateY(-100%);opacity:0;pointer-events:none}
.loader-logo{width:440px;max-width:85%;opacity:0;transform:scale(.8) translateY(20px);transition:opacity 1s ease-out,transform 1s cubic-bezier(.2,.8,.2,1);filter:drop-shadow(0 10px 20px rgba(0,102,204,0))}
.loader-logo.show{opacity:1;transform:scale(1) translateY(0);filter:drop-shadow(0 10px 20px rgba(0,102,204,.2))}
@keyframes loaderSafety{to{opacity:0;visibility:hidden;pointer-events:none}}