/* SINOPEP V52 — single coherent responsive design system */
:root{--navy:#0b344d;--ink:#133c55;--blue:#1575a4;--sky:#edf5f9;--muted:#597588;--line:#dae6ed;--green:#75b849;--shell:1380px;--r:18px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:85px}body{margin:0;overflow-x:hidden;color:var(--ink);background:#fff;font:400 16px/1.7 Inter,'Noto Sans',Arial,system-ui,sans-serif}img,video{display:block;max-width:100%}a{color:inherit;text-decoration:none}button,select,input{font:inherit}button{cursor:pointer}.shell{width:min(var(--shell),calc(100% - 80px));margin-inline:auto;min-width:0}.section{padding:88px 0}.section h2{font-size:clamp(32px,2.6vw,46px);line-height:1.24;letter-spacing:-.035em;margin:12px 0 19px;overflow-wrap:break-word}.eyebrow{font-size:12px;letter-spacing:.13em;font-weight:800;text-transform:uppercase;color:var(--blue)}.section-desc{font-size:16px;line-height:1.8;color:var(--muted);max-width:720px;margin:0}
/* header */
.header{position:sticky;top:0;background:#fff;z-index:30;border-bottom:1px solid #e3edf1;box-shadow:0 4px 24px #09384c0c}.header-inner{height:78px;display:flex;gap:34px;align-items:center}.brand{display:inline-flex;align-items:center;gap:11px;flex:none;font-size:25px;font-weight:850;line-height:1;letter-spacing:.035em;color:#0e354e}.brand small{display:block;letter-spacing:.12em;font-size:8px;font-weight:750;margin-top:5px}.brand-mark{position:relative;display:block;width:34px;height:40px;flex:none}.brand-mark i,.brand-mark b,.brand-mark em{display:block;position:absolute;width:15px;height:13px;border-radius:2px;transform:skewY(-26deg)}.brand-mark i{background:#1683ae;left:0;top:13px}.brand-mark b{background:#70bd42;left:14px;top:3px}.brand-mark em{background:#229a7d;left:14px;top:21px}.header nav{display:flex;align-items:center;justify-content:center;gap:26px;margin-left:auto}.header nav a{font-size:14px;line-height:1.3;font-weight:750;white-space:nowrap}.header nav a:hover,.footer-nav a:hover{color:#1382bb}.head-actions{margin-left:auto;display:flex;gap:14px;align-items:center}.lang-picker{position:relative;flex:none}.lang-button{display:flex;align-items:center;gap:8px;min-width:122px;max-width:180px;padding:10px 12px;border:1px solid #c9dce5;background:#f9fcfd;border-radius:26px;color:#123a54;font-size:12px;font-weight:750}.lang-button svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.7}.lang-button .lang-chevron{margin-left:auto;width:13px;height:13px}.lang-list{position:absolute;right:0;top:calc(100% + 8px);width:215px;max-height:min(450px,70vh);overflow:auto;z-index:50;padding:7px;border:1px solid var(--line);border-radius:12px;background:#fff;box-shadow:0 20px 50px #062b4530}.lang-list[hidden]{display:none}.lang-list button{display:block;width:100%;border:0;background:transparent;padding:9px 10px;color:#264c62;font-size:13px;text-align:left;border-radius:7px}.lang-list button:hover,.lang-list button.selected{background:#eaf4f9;color:#126c9c;font-weight:800}.contact-link{padding:11px 18px;background:#125b84;color:#fff;font-size:13px;font-weight:800;white-space:nowrap}.menu-button{display:none;padding:7px;border:0;background:transparent}.menu-button span{display:block;width:23px;height:2px;background:#1b4965;margin:5px 0}
/* full-bleed desktop hero */
.hero{position:relative;height:clamp(510px,39vw,625px);overflow:hidden;background:#1b607f;color:#fff;isolation:isolate}.hero-photo{position:absolute;inset:0;z-index:-2;background:url('assets/hero/guangzhou_factory_hero.webp') center center/cover no-repeat}.hero-shade{position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(8,40,62,.02) 0%,rgba(8,47,75,.05) 44%,rgba(5,39,65,.55) 72%,rgba(5,37,61,.72) 100%)}.hero-inner{height:100%;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,590px);align-items:center;gap:30px}.hero-panel{grid-column:2;min-width:0;padding:0 8px 0 0}.hero-kicker{font-size:13px;font-weight:750;letter-spacing:.09em;color:#d5eaf3}.hero h1{font-size:clamp(44px,3.6vw,64px);line-height:1.12;letter-spacing:-.04em;margin:20px 0 20px;overflow-wrap:normal;word-break:normal}.hero p{font-size:17px;line-height:1.82;max-width:570px;margin:0;color:#e8f4f9}.hero-cta{display:flex;align-items:center;flex-wrap:wrap;gap:22px;margin-top:30px}.btn-primary{background:#1485b8;color:#fff;border-radius:5px;display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 21px;font-size:14px;font-weight:800}.btn-video{display:inline-flex;align-items:center;gap:11px;font-size:14px;font-weight:750}.play-symbol{border:1px solid #c6e5f1;border-radius:50%;width:36px;height:36px;display:grid;place-items:center;font-size:11px}.hero-photo-highlights{display:none}
/* company */
.branch-overview{background:#fff}.branch-overview-content{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);grid-template-areas:'tag tag' 'title intro' 'lead intro' 'features features';column-gap:55px;row-gap:17px;align-items:start}.branch-topline{grid-area:tag;display:flex;align-items:center;gap:12px}.brand-stripe{width:30px;height:3px;background:var(--green)}.branch-overview-content h2{grid-area:title;margin:0;font-size:clamp(34px,2.7vw,48px);line-height:1.23;max-width:640px}.branch-lead{grid-area:lead;color:#11709d;font-size:clamp(18px,1.45vw,22px);font-weight:750;line-height:1.5;margin:0}.branch-intro{grid-area:intro;border-left:2px solid var(--line);padding:8px 0 8px 25px;align-self:center}.branch-intro p{margin:0;font-size:16px;line-height:1.95;color:#506c7e}.branch-feature-grid{grid-area:features;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:16px}.branch-feature-grid article{display:grid;grid-template-columns:48px minmax(0,1fr);align-items:center;gap:17px;background:#f5f9fb;border:1px solid var(--line);padding:24px;border-radius:var(--r);min-width:0}.feature-mark{display:grid;place-items:center;width:46px;height:46px;background:#e5f2f8;color:#116f9e;border-radius:12px}.feature-mark svg{width:24px;height:24px}.branch-feature-grid p{margin:0;color:#516d7e;font-size:15px;line-height:1.75}
/* capabilities and products */
.capabilities{background:#f6fafc}.cap-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin-top:32px}.cap{position:relative;min-height:330px;overflow:hidden;border-radius:var(--r);background:#092f49}.cap img{width:100%;height:330px;object-fit:cover;opacity:.83}.cap:after{content:'';position:absolute;inset:40% 0 0;background:linear-gradient(0deg,#07263fea,transparent)}.cap>div{position:absolute;bottom:26px;left:26px;right:25px;z-index:1;color:#fff}.cap span{font-size:11px;color:#b9e3f3}.cap h3{font-size:24px;line-height:1.28;margin:7px 0 0}.product-section{background:#fff}.product-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin-top:30px}.product-card{overflow:hidden;min-width:0;border:1px solid var(--line);border-radius:var(--r);background:#fff;box-shadow:0 8px 30px #082f4810}.product-img{background:#f7fafb;aspect-ratio:1;display:flex;justify-content:center;align-items:center;padding:16px}.product-img img{width:100%;height:100%;object-fit:contain}.product-info{padding:20px}.product-info span{display:block;color:#7791a1;font-size:11px;letter-spacing:.1em;text-transform:uppercase;font-weight:750}.product-info h3{font-size:22px;margin:8px 0 10px;line-height:1.3}.product-info a{font-size:13px;font-weight:800;color:#1377a3;text-decoration:underline;text-underline-offset:4px}
/* factory */
.factory{background:var(--navy);color:#fff}.factory-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);align-items:center;gap:58px}.factory .section-desc{color:#c9dce7}.factory-thumbs{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin-top:28px}.factory-thumbs img{width:100%;height:210px;object-fit:cover;border-radius:12px}.video-frame{display:flex;flex-direction:column;align-items:center}.video-caption{font-size:16px;font-weight:750;margin-bottom:15px}.video-frame video{width:min(100%,290px);max-height:485px;aspect-ratio:464/848;object-fit:contain;background:#062338;border:6px solid #315c77;border-radius:14px}
/* unified quality area */
.quality{background:#f4f8fa}.quality-fusion{background:#fff;border:1px solid var(--line);border-radius:26px;padding:34px;box-shadow:0 14px 40px #09384a0d}.quality-fusion-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:22px}.quality-fusion-head h2{margin-bottom:12px}.quality-header-rule{width:100px;height:2px;background:var(--green);flex:none}.quality-highlights{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px;margin-bottom:24px}.quality-tile{display:flex;align-items:flex-start;gap:12px;min-width:0;border:1px solid var(--line);border-radius:14px;padding:20px 15px;background:#fbfdfe}.quality-symbol{display:grid;place-items:center;width:44px;height:44px;border-radius:11px;flex:none;background:#eaf4f9;color:#1776a2}.quality-symbol svg{width:24px;height:24px}.quality-tile h3{font-size:16px;line-height:1.4;margin:0 0 7px}.quality-tile p{font-size:12px;line-height:1.6;color:var(--muted);margin:0}.quality-showcase{display:grid;grid-template-columns:minmax(0,1.06fr) minmax(0,.94fr);align-items:stretch;gap:18px}.scene-panel,.quality-scene{height:100%;min-height:0}.quality-scene{margin:0;overflow:hidden;border-radius:14px;background:#ebf2f5}.quality-scene img{height:100%;width:100%;object-fit:cover}.docs-report-card{min-width:0;border:1px solid var(--line);background:#f9fcfd;padding:18px;border-radius:14px;display:flex;flex-direction:column}.docs-report-head{margin-bottom:12px}.docs-report-kicker{display:block;color:#177da7;font-size:11px;letter-spacing:.1em;font-weight:800}.docs-report-head h3{font-size:22px;margin:3px 0}.docs-report-body{min-height:0;flex:1;display:flex;align-items:center;justify-content:center;background:#ecf3f7;padding:10px;border-radius:11px}.coa-open{display:flex;align-items:center;justify-content:center;width:100%;height:100%}.docs-report-body img{width:auto;max-width:100%;height:auto;max-height:450px;object-fit:contain}
/* contact / footer */
.contact-section{background:#fff}.contact-simple p{color:var(--muted);font-size:16px}.regulatory-banner{display:flex;gap:14px;align-items:flex-start;padding:19px 22px;margin-top:25px;background:#f4f8fa;border:1px solid var(--line);border-radius:12px}.regulatory-banner p{margin:0;color:#617888;font-size:13px;line-height:1.7}.regulatory-banner a{font-weight:750;color:#176d94;font-size:13px;white-space:nowrap}.footer{background:#092e49;color:#dceaf1}.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr;gap:44px;padding:54px 0}.footer .brand{color:#fff}.footer-brand p{max-width:410px;font-size:13px;color:#b2cbd8;margin:18px 0 0}.footer-nav{display:flex;flex-direction:column;gap:13px}.footer-nav a{font-size:13px}.footer-bottom{border-top:1px solid #31536a;padding:20px 0;color:#b0c7d6;font-size:12px}
/* legal */
.legal-main{padding:75px 0;min-height:70vh;background:#f4f8fa}.legal-wrap{max-width:950px}.legal-wrap h1{font-size:clamp(32px,3.2vw,48px);line-height:1.2}.legal-wrap>p{color:var(--muted)}.legal-tabs{display:flex;flex-wrap:wrap;gap:10px;margin:26px 0}.legal-tabs a{padding:10px 14px;font-size:13px;border:1px solid var(--line);background:white;border-radius:7px}.legal-content{padding:32px;background:white;border:1px solid var(--line);border-radius:12px;color:#4d6a7d;overflow-wrap:anywhere}.back-link{color:#0f729e;font-weight:750;display:inline-block;margin-top:24px}.legal-page .header nav{display:none}
@media(max-width:1160px){.header-inner{gap:18px}.header nav{gap:15px}.header nav a{font-size:12px}.contact-link{padding:10px 13px}.hero-inner{grid-template-columns:minmax(0,1fr) minmax(0,480px)}.hero h1{font-size:clamp(39px,4vw,56px)}.quality-highlights{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:900px){.shell{width:calc(100% - 44px)}.header-inner{height:70px}.menu-button{display:block}.header nav{position:absolute;top:100%;left:0;right:0;display:none;flex-direction:column;align-items:stretch;gap:0;padding:8px 22px 16px;background:#fff;box-shadow:0 15px 30px #08374f20}.header nav.open{display:flex}.header nav a{font-size:14px;padding:11px 0;border-bottom:1px solid #edf3f6}.contact-link{display:none}.head-actions{margin-left:auto}.hero-inner{grid-template-columns:minmax(0,1fr) minmax(0,420px)}.branch-overview-content{column-gap:30px}.cap-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.cap:last-child{grid-column:span 2}.product-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.factory-grid{grid-template-columns:1fr;gap:30px}.quality-showcase{grid-template-columns:1fr}.quality-scene img{aspect-ratio:16/9;height:auto}.footer-top{grid-template-columns:1.4fr 1fr 1fr;gap:24px}}
@media(max-width:680px){body{font-size:14px}.shell{width:calc(100% - 36px)}.section{padding:60px 0}.section h2{font-size:clamp(26px,7vw,36px)}.section-desc{font-size:14px}.brand{font-size:19px;gap:8px}.brand small{font-size:6.5px}.brand-mark{transform:scale(.85);transform-origin:center}.header-inner{height:66px;gap:12px}.lang-button{min-width:105px;max-width:128px;padding:8px 10px;font-size:11px}.menu-button{padding:4px}.hero{height:auto;overflow:hidden;background:var(--navy)}.hero-photo{position:relative;inset:auto;z-index:auto;width:100%;height:auto;aspect-ratio:16/9;background-position:center center;background-size:cover}.hero-shade{display:none}.hero-inner{display:block;width:100%;height:auto;padding:0}.hero-panel{background:var(--navy);padding:24px 18px 28px}.hero-kicker{font-size:11px}.hero h1{font-size:clamp(29px,7.6vw,40px);line-height:1.22;margin:12px 0}.hero p{font-size:14px;line-height:1.7}.hero-cta{gap:12px;margin-top:20px}.btn-primary{font-size:12px;padding:11px 14px;min-height:44px}.btn-video{font-size:12px;gap:8px}.play-symbol{height:33px;width:33px}.hero-photo-highlights{position:absolute;display:flex;right:4%;top:37%;width:46%;max-width:185px;flex-direction:column;gap:4px;text-align:right;align-items:flex-end;pointer-events:none}.hero-highlights-title{color:#0d3e5a;font-weight:850;line-height:1.12;font-size:clamp(14px,3.7vw,19px);overflow-wrap:anywhere}.hero-highlights-subtitle{color:#345c70;font-weight:750;font-size:clamp(9px,2.2vw,11px);line-height:1.4}.branch-overview-content{display:block}.branch-topline{margin-bottom:15px}.branch-overview-content h2{font-size:clamp(25px,6.5vw,35px);margin:0 0 13px}.branch-lead{font-size:16px}.branch-intro{padding:18px 0 0;border:0;border-top:1px solid var(--line);margin-top:21px}.branch-intro p{font-size:14px;line-height:1.85}.branch-feature-grid{grid-template-columns:1fr;gap:12px;margin-top:24px}.branch-feature-grid article{padding:17px;grid-template-columns:40px minmax(0,1fr)}.feature-mark{width:40px;height:40px}.branch-feature-grid p{font-size:13px}.cap-grid{grid-template-columns:1fr;gap:14px}.cap:last-child{grid-column:auto}.cap,.cap img{height:265px;min-height:0}.cap h3{font-size:20px}.product-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.product-info{padding:13px}.product-info h3{font-size:17px}.factory-thumbs img{height:135px}.quality-fusion{padding:18px;border-radius:19px}.quality-fusion-head{display:block}.quality-header-rule{display:none}.quality-highlights{gap:10px;margin-bottom:16px}.quality-tile{display:block;padding:13px 11px}.quality-symbol{width:36px;height:36px;margin-bottom:9px}.quality-symbol svg{width:20px;height:20px}.quality-tile h3{font-size:13px}.quality-tile p{font-size:11px}.quality-showcase{gap:13px}.quality-scene img{aspect-ratio:16/10;object-fit:cover}.docs-report-card{padding:13px}.docs-report-head h3{font-size:18px}.docs-report-body img{max-height:none}.regulatory-banner{flex-wrap:wrap}.footer-top{grid-template-columns:1fr 1fr;gap:26px;padding:40px 0}.footer-brand{grid-column:1/-1}.footer-bottom{font-size:11px}.legal-content{padding:20px}}
@media(max-width:370px){.shell{width:calc(100% - 28px)}.hero-photo-highlights{right:3%;top:35%;width:48%}.hero-highlights-title{font-size:13px}.hero-highlights-subtitle{font-size:8.8px}.header-inner{gap:7px}.brand{font-size:17px}.brand small{font-size:5.6px}.lang-button{min-width:92px;max-width:108px}.quality-highlights{grid-template-columns:1fr}.product-grid{gap:9px}}
html[dir=rtl] .lang-list{right:auto;left:0}html[dir=rtl] .lang-list button{text-align:right}html[dir=rtl] .branch-intro{border-left:0;border-right:2px solid var(--line);padding-left:0;padding-right:25px}@media(max-width:680px){html[dir=rtl] .branch-intro{border-right:0;padding-right:0}}