:root{--blue:#3e6ae1;--blue-dark:#2a54c4;--white:#fff;--ash:#f4f4f4;--carbon:#171a20;--graphite:#393c41;--pewter:#5c5e62;--silver:#8e8e8e;--cloud:#eee;--pale:#d0d1d2;--light-blue:#258dc2;--radius:4px;--ease:.33s cubic-bezier(.5, 0, 0, .75)}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{color:var(--graphite);background:var(--white);-webkit-font-smoothing:antialiased;font-family:Universal Sans Text,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Arial,sans-serif;font-size:14px;line-height:1.43}a{color:inherit;text-decoration:none}img,video{max-width:100%;display:block}.container{max-width:1383px;margin:0 auto;padding:0 24px}.section{padding:96px 0}.center{text-align:center;margin-top:48px}.site-header{z-index:100;transition:background-color var(--ease);background:0 0;position:sticky;top:0}.site-header--solid{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#ffffffbf}.site-header-inner{justify-content:space-between;align-items:center;gap:24px;max-width:1383px;height:56px;margin:0 auto;padding:0 24px;display:flex}.wordmark{letter-spacing:10px;color:var(--carbon);white-space:nowrap;font-family:Universal Sans Display,-apple-system,Arial,sans-serif;font-size:18px;font-weight:500}.wordmark-img{width:auto;max-height:96px;display:block}.desktop-nav,.pill-list{align-items:center;gap:4px;display:flex}.pill{color:var(--carbon);border-radius:var(--radius);min-height:32px;transition:background-color var(--ease), color var(--ease);padding:4px 16px;font-size:14px;font-weight:500;line-height:24px;display:block;position:relative}a.pill:hover{background:var(--ash)}.pill-panel{background:var(--white);z-index:110;border-radius:12px;flex-direction:column;gap:4px;min-width:240px;padding:24px;display:flex;position:absolute;top:calc(100% + 8px);left:50%;transform:translate(-50%)}.pill-panel-inner{flex-direction:column;gap:4px;display:flex}.pill-sub{color:var(--pewter);border-radius:var(--radius);transition:color var(--ease), background-color var(--ease);padding:6px 8px;font-size:14px;font-weight:400}.pill-sub:hover{color:var(--carbon);background:var(--ash)}.pill-sub--all{color:var(--carbon);border-top:1px solid var(--cloud);margin-top:8px;padding-top:12px;font-weight:500}.nav-scrim{z-index:90;background:#80808059;position:fixed;inset:56px 0 0}.header-phone{color:var(--carbon);white-space:nowrap;flex-shrink:0;order:0;align-items:center;gap:6px;font-size:16px;font-weight:600;display:flex}.header-phone-label{color:#6b7280;letter-spacing:1px;font-size:13px;font-weight:500}.header-phone-num{color:var(--carbon);letter-spacing:1px;font-size:16px;font-weight:600}.header-phone:hover .header-phone-num{color:var(--blue)}.burger{cursor:pointer;background:0 0;border:none;flex-direction:column;gap:5px;padding:10px;display:none}.burger span{background:var(--carbon);width:22px;height:2px;transition:transform var(--ease), opacity var(--ease)}.burger.is-open span:first-child{transform:translateY(7px)rotate(45deg)}.burger.is-open span:nth-child(2){opacity:0}.burger.is-open span:nth-child(3){transform:translateY(-7px)rotate(-45deg)}.mobile-menu{background:var(--white);flex-direction:column;gap:8px;padding:16px 24px 32px;display:flex}.pill-list--mobile{flex-direction:column;align-items:stretch}.pill-list--mobile .pill{padding:10px 8px}.pill-list--mobile .pill-panel{border-radius:0;min-width:0;padding:8px 0 8px 16px;position:static;transform:none}.hero{justify-content:center;align-items:center;height:100vh;min-height:560px;display:flex;position:relative;overflow:hidden}.hero-media{object-fit:cover;width:100%;height:100%;position:absolute;inset:0}.hero-overlay{background:#171a2073;position:absolute;inset:0}.hero-content{z-index:2;text-align:center;max-width:900px;padding:0 24px;position:relative}.hero-title{color:var(--white);letter-spacing:24px;text-indent:24px;margin-bottom:16px;font-family:Universal Sans Display,-apple-system,Arial,sans-serif;font-size:40px;font-weight:500;line-height:1.2}.hero-sub{color:var(--white);margin-bottom:40px;font-size:22px;font-weight:400;line-height:1.4}.hero-actions{flex-wrap:wrap;justify-content:center;gap:16px;display:flex}.hero-dots{z-index:2;gap:8px;display:flex;position:absolute;bottom:32px;left:50%;transform:translate(-50%)}.dot{background:#ffffff80;border-radius:50%;width:8px;height:8px}.dot.is-on{background:var(--white)}.btn{border-radius:var(--radius);cursor:pointer;min-height:40px;transition:background-color var(--ease), color var(--ease), border-color var(--ease);border:3px solid #0000;justify-content:center;align-items:center;padding:4px 32px;font-family:inherit;font-size:14px;font-weight:500;display:inline-flex}.btn--primary{background:var(--blue);color:var(--white)}.btn--primary:hover{background:var(--blue-dark)}.btn--ghost{color:var(--carbon);background:#ffffffe6}.btn--ghost:hover{background:var(--white)}.btn--dark-outline{background:var(--white);color:var(--carbon);border-color:var(--carbon)}.btn--dark-outline:hover{background:var(--carbon);color:var(--white)}.sec-head{text-align:center;margin-bottom:56px}.sec-en{letter-spacing:6px;color:var(--silver);margin-bottom:8px;font-size:13px;font-weight:500;display:block}.sec-zh{color:var(--carbon);font-family:Universal Sans Display,-apple-system,Arial,sans-serif;font-size:28px;font-weight:500}.section--white{background:var(--white)}.section--light{background:var(--ash)}.cat-grid{grid-template-columns:repeat(5,1fr);gap:16px;display:grid}.cat-cell{background:var(--ash);transition:background-color var(--ease);border-radius:12px;flex-direction:column;align-items:center;gap:8px;padding:32px 20px;display:flex}.cat-cell:hover{background:var(--cloud)}.cat-name{color:var(--carbon);font-size:17px;font-weight:500}.cat-num{color:var(--silver);font-size:13px}.prod-grid{grid-template-columns:repeat(4,1fr);gap:16px;display:grid}.prod-card{background:var(--white);min-height:180px;transition:background-color var(--ease);border-radius:12px;flex-direction:column;gap:12px;padding:28px;display:flex}.section--light 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.case-card{background:var(--white)}.case-card-img{aspect-ratio:16/10;object-fit:cover;background:var(--cloud);width:100%}.case-card-img--empty{background:var(--ash);position:relative}.case-card-img--empty:after{content:"津达工程";color:var(--pale);letter-spacing:6px;justify-content:center;align-items:center;font-size:17px;font-weight:500;display:flex;position:absolute;inset:0}.case-card-body{flex-direction:column;gap:8px;padding:20px;display:flex}.case-card-tag{color:var(--blue);font-size:13px;font-weight:500}.case-card-name{color:var(--carbon);-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:17px;font-weight:500;line-height:1.25;display:-webkit-box;overflow:hidden}.news-cols{grid-template-columns:repeat(2,1fr);gap:8px 48px;display:grid}.news-item{border-radius:var(--radius);transition:background-color var(--ease);align-items:baseline;gap:16px;padding:14px 8px;display:flex}.news-item:hover{background:var(--cloud)}.news-item-tag{color:var(--silver);flex-shrink:0;width:56px;font-size:12px}.news-item-name{color:var(--carbon);-webkit-line-clamp:1;-webkit-box-orient:vertical;font-size:14px;line-height:1.43;display:-webkit-box;overflow:hidden}.cta-band{background:var(--carbon);text-align:center;padding:96px 24px}.cta-band-title{color:var(--white);margin-bottom:12px;font-family:Universal Sans Display,-apple-system,Arial,sans-serif;font-size:28px;font-weight:500}.cta-band-sub{color:var(--pale);margin-bottom:40px;font-size:16px}.page-hero{background:var(--light-blue);color:var(--white);padding:72px 0 64px}.page-hero--plain .page-title{color:var(--white)}.crumbs{color:var(--pale);align-items:center;gap:8px;margin-bottom:24px;font-size:13px;display:flex}.crumbs a:hover{color:var(--white)}.crumb-sep{color:var(--silver)}.crumb-cur{color:var(--white)}.page-title{color:var(--carbon);font-family:Universal Sans 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var(--ease);align-items:baseline;gap:20px;padding:20px 8px;display:flex}.news-list-item:hover{background:var(--ash)}.news-list-tag{color:var(--blue);flex-shrink:0;font-size:13px;font-weight:500}.news-list-name{color:var(--carbon);font-size:15px}.empty-tip{text-align:center;color:var(--silver);padding:48px 0;font-size:14px}.empty-link{color:var(--blue);margin-left:12px}.doc-body{max-width:860px;margin:0 auto}.doc-gallery{grid-template-columns:repeat(2,1fr);gap:16px;margin-bottom:32px;display:grid}.doc-gallery img{object-fit:cover;aspect-ratio:16/10;border-radius:12px;width:100%}.doc-para{color:var(--graphite);margin-bottom:20px;font-size:15px;line-height:1.9}.static-body{max-width:1000px;margin:0 auto}.static-img{margin-bottom:32px}.static-img img{border-radius:12px;width:100%}.static-img img.static-img--qr{width:20%;max-width:200px;margin:0 auto;display:block}.contact-band{background:var(--carbon);border-radius:12px;margin-top:56px;padding:48px 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a:hover{color:var(--blue)}.footer-col{flex-direction:column;gap:10px;display:flex}.footer-col-title{color:var(--white);letter-spacing:2px;margin-bottom:8px;font-size:14px;font-weight:500}.footer-col-title--gap{margin-top:24px}.footer-col a{color:var(--white);transition:color var(--ease);font-size:13px}.footer-col a:hover{color:var(--white)}.footer-bottom{max-width:1383px;color:var(--white);border-top:1px solid #ffffff1a;flex-wrap:wrap;align-items:center;gap:24px;margin:0 auto;padding-top:24px;font-size:13px;display:flex}.footer-bottom a{color:var(--white);transition:color var(--ease)}.footer-bottom a:hover{color:var(--white)}.footer-gongan{align-items:center;gap:6px;display:inline-flex}.footer-gongan img{width:16px;height:16px}.footer-copyright{margin-left:auto}@media (width>=1025px){.hero-title{font-size:40px}}@media (width<=1024px){.cat-grid,.prod-grid{grid-template-columns:repeat(3,1fr)}.case-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr}}@media (width<=768px){.desktop-nav{display:none}.burger{display:flex}.section{padding:64px 0}.hero-title{letter-spacing:12px;text-indent:12px;font-size:28px}.hero-sub{font-size:18px}.hero-actions{flex-direction:column;align-items:stretch}.cat-grid,.prod-grid{grid-template-columns:repeat(2,1fr)}.case-grid,.news-cols,.detail-layout{grid-template-columns:1fr}.spec-row{grid-template-columns:1fr;gap:4px}.contact-row,.doc-gallery{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;gap:32px}.footer-copyright{margin-left:0}.header-phone{display:none}}@media (width<=480px){.cat-grid,.prod-grid{grid-template-columns:1fr}}