@font-face{font-family:"Signal Display";src:url("assets/fonts/signal-display.woff2") format("woff2");font-display:swap}
:root{--ink:#0d1115;--graphite:#202221;--steel:#66717a;--line:#c6cdd2;--ice:#eff2f3;--surface:#f8fafb;--cyan:#05cfe0;--cyan-bright:#05f5ff;--amber:#b78433;--signal-progress:6%;--flow-progress:12%;color-scheme:light;scroll-behavior:smooth}
*{box-sizing:border-box}
html{scroll-padding-top:84px}
body{margin:0;background:var(--surface);color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.7;overflow-x:hidden}
body.menu-open{overflow:hidden}
img{display:block;width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
button{color:inherit}
::selection{background:var(--cyan-bright);color:var(--ink)}
:focus-visible{outline:3px solid var(--cyan);outline-offset:4px}
.skip-link{position:fixed;z-index:100;top:12px;left:12px;padding:10px 14px;background:var(--cyan-bright);color:var(--ink);transform:translateY(-160%)}
.skip-link:focus{transform:none}
.site-header{height:78px;position:sticky;z-index:50;top:0;display:flex;align-items:center;justify-content:space-between;padding:0 clamp(24px,4vw,68px);background:rgba(13,17,21,.97);color:#fff;border-bottom:1px solid rgba(255,255,255,.12)}
.brand,.footer-brand{display:inline-flex;align-items:center;gap:12px;min-height:44px}
.brand-mark{width:39px;height:39px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;color:var(--cyan-bright);flex:0 0 auto}
.brand span{display:grid;line-height:1.15}.brand strong{font-size:15px;letter-spacing:.08em}.brand small{margin-top:5px;color:#aab5bd;font-size:10px;letter-spacing:.18em;text-transform:uppercase}
.site-nav{display:flex;align-items:center;gap:clamp(24px,3vw,48px)}
.site-nav a{min-height:44px;display:flex;align-items:center;position:relative;font-size:14px;letter-spacing:.08em;color:#dfe6ea}
.site-nav a::after{content:"";position:absolute;left:0;right:100%;bottom:4px;height:2px;background:var(--cyan-bright);transition:right .2s ease}
.site-nav a:hover::after,.site-nav a:focus-visible::after{right:0}
.menu-toggle{display:none;min-width:54px;min-height:48px;border:0;background:transparent;color:#fff;cursor:pointer}
.menu-toggle i,.menu-toggle i::after{display:block;width:22px;height:2px;background:var(--cyan-bright);content:"";transition:transform .2s ease}
.menu-toggle i{margin-left:10px}.menu-toggle i::after{transform:translateY(6px)}
.menu-toggle[aria-expanded="true"] i{transform:rotate(45deg)}.menu-toggle[aria-expanded="true"] i::after{transform:rotate(-90deg)}
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.signal-spine span{display:block;width:100%;height:var(--signal-progress);background:var(--cyan);box-shadow:0 0 12px rgba(5,245,255,.45)}
.signal-spine i{position:absolute;top:calc(var(--signal-progress) - 5px);left:-4px;width:10px;height:10px;border-radius:50%;background:var(--cyan-bright);box-shadow:0 0 0 5px rgba(5,207,224,.16)}
.eyebrow{margin:0 0 20px;font-size:11px;font-weight:700;letter-spacing:.2em;color:#59646d;text-transform:uppercase}
.hero{min-height:calc(100vh - 78px);display:grid;grid-template-columns:minmax(360px,36%) minmax(0,64%);grid-template-rows:auto 1fr;position:relative;background:var(--ice);border-bottom:1px solid var(--line)}
.hero-copy{padding:clamp(56px,8vw,118px) clamp(36px,5.5vw,88px) 52px;align-self:center}
.hero h1,.section-heading h2,.research h2,.development h2,.contact h2{font-family:"Signal Display","Microsoft YaHei",sans-serif;font-weight:400;line-height:1.02;letter-spacing:.015em}
.hero h1{font-size:clamp(48px,5.4vw,88px);margin:0 0 28px;white-space:nowrap}.hero h1 span{color:#00727a}
.hero-intro{max-width:580px;margin:0;color:#47525b;font-size:clamp(16px,1.2vw,19px)}
.hero-actions{display:flex;align-items:center;gap:24px;margin-top:38px}
.primary-action{min-height:50px;display:inline-flex;align-items:center;justify-content:center;gap:30px;padding:0 20px;background:var(--ink);color:#fff;border:1px solid var(--ink);font-size:14px;font-weight:700;letter-spacing:.06em;transition:background .2s ease,color .2s ease}
.primary-action:hover{background:var(--cyan-bright);color:var(--ink)}
.text-action{min-height:48px;display:inline-flex;align-items:center;border-bottom:1px solid var(--ink);font-size:14px}
.hero-media{margin:0;position:relative;grid-column:2;grid-row:1 / span 2;min-height:720px;background:var(--ink);overflow:hidden}
.hero-media picture,.hero-media img{height:100%}.hero-media img{object-fit:cover;object-position:center}
.hero-media::before{content:"AUTOMOTIVE ELECTRONICS";position:absolute;z-index:2;top:24px;left:26px;color:#fff;font-size:10px;letter-spacing:.2em}
.hero-media figcaption{position:absolute;z-index:2;right:24px;bottom:22px;max-width:380px;padding:13px 16px;background:rgba(13,17,21,.9);color:#e8eef1;font-size:12px;letter-spacing:.05em}.hero-media figcaption span{color:var(--cyan-bright);margin-right:10px}
.hero-register{position:absolute;z-index:3;right:0;top:116px;margin:0;padding:0;width:118px;background:rgba(239,242,243,.9);list-style:none;border-left:1px solid #9da7ad}
.hero-register li{display:flex;align-items:center;gap:10px;min-height:58px;padding:0 12px;border-bottom:1px solid rgba(13,17,21,.15);font-size:13px}.hero-register b{font-size:9px;color:#00727a}
.section-heading{display:grid;grid-template-columns:minmax(280px,1fr) minmax(420px,1.5fr) minmax(260px,.8fr);gap:40px;align-items:end;padding:clamp(72px,9vw,136px) clamp(36px,7vw,112px) 56px;background:#fff;border-bottom:1px solid var(--line)}
.section-heading .eyebrow{align-self:start}.section-heading h2{font-size:clamp(44px,5.3vw,80px);margin:0}.section-heading>p:last-child{margin:0;color:#59646d;max-width:430px}
.product-strip{display:grid;grid-template-columns:120px minmax(280px,30%) minmax(0,1fr);min-height:560px;border-bottom:1px solid var(--line);background:var(--ice)}
.product-strip>*{min-width:0}.product-number{padding:36px 20px;border-right:1px solid var(--line);font-size:10px;letter-spacing:.17em;writing-mode:vertical-rl;color:#59646d}
.product-copy{padding:clamp(44px,7vw,110px) clamp(30px,5vw,82px);align-self:center}
.product-copy h3{margin:0 0 24px;font-family:"Signal Display","Microsoft YaHei",sans-serif;font-size:clamp(42px,4vw,64px);font-weight:400}.product-copy p{margin:0 0 28px;color:#4d5961}.product-copy a{min-height:44px;display:inline-flex;align-items:center;gap:30px;border-bottom:1px solid var(--ink);font-size:13px;font-weight:700;letter-spacing:.06em}
.product-strip picture{min-height:560px;overflow:hidden}.product-strip img{height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.22,1,.36,1)}.product-strip:hover img{transform:scale(1.025)}
.product-clock{background:#e4e9ec}.product-clock picture{order:2}.product-clock .product-copy{order:3}.product-clock .product-number{order:1}
.product-gateway{background:#d9e0e4}
.research{display:grid;grid-template-columns:55% 45%;background:#fff}
.research-media{margin:0;position:relative;min-height:760px;overflow:hidden}.research-media picture,.research-media img{height:100%}.research-media img{object-fit:cover}.research-media>p{position:absolute;left:28px;right:28px;bottom:22px;margin:0;padding:14px 17px;background:rgba(13,17,21,.9);color:#eef4f6;font-size:12px}.research-media b{color:var(--cyan-bright);margin-right:14px}
.research-copy{padding:clamp(70px,8vw,126px) clamp(36px,6vw,96px)}
.research-copy h2{margin:0 0 28px;font-size:clamp(46px,5vw,76px)}.research-copy>p:not(.eyebrow){margin:0;color:#59646d}
.discipline-list{list-style:none;margin:52px 0 0;padding:0;border-top:1px solid var(--line)}
.discipline-list li{display:grid;grid-template-columns:50px 1fr 1.5fr;align-items:center;min-height:68px;border-bottom:1px solid var(--line)}.discipline-list b{color:#00727a;font-size:10px}.discipline-list span{font-weight:700}.discipline-list small{color:#6b757d}
.manufacturing{position:relative;padding:clamp(76px,9vw,136px) clamp(36px,7vw,112px) clamp(90px,10vw,150px);background:var(--ink);color:#f4f7f8}
.dark-heading{display:grid;padding:0 0 70px;background:transparent;border-color:#3a4248}.dark-heading .eyebrow,.dark-heading>p:last-child{color:#a9b2b8}
.manufacturing-flow{position:relative}.flow-rail{position:absolute;z-index:2;top:0;bottom:0;left:50%;width:2px;background:#465158}.flow-rail span{display:block;width:100%;height:var(--flow-progress);background:var(--cyan-bright)}.flow-rail i{position:absolute;top:calc(var(--flow-progress) - 7px);left:-6px;width:14px;height:14px;border:2px solid var(--cyan-bright);background:var(--ink);border-radius:50%}
.manufacturing-flow article{display:grid;grid-template-columns:35% 65%;align-items:center;border-top:1px solid #3a4248}.manufacturing-flow article:last-child{border-bottom:1px solid #3a4248}.manufacturing-flow .flow-reverse{grid-template-columns:65% 35%}.flow-reverse .flow-copy{order:2}.flow-reverse picture{order:1}
.flow-copy{padding:60px clamp(24px,4vw,68px)}.flow-copy b{font-size:11px;color:var(--cyan-bright);letter-spacing:.18em}.flow-copy h3{margin:12px 0 18px;font-family:"Signal Display","Microsoft YaHei",sans-serif;font-size:clamp(42px,4.6vw,72px);font-weight:400}.flow-copy p{margin:0;color:#bac2c7}
.manufacturing-flow picture{min-height:500px;overflow:hidden}.manufacturing-flow img{height:100%;object-fit:cover}
.development{display:grid;grid-template-columns:55% 45%;background:var(--ice);border-bottom:1px solid var(--line)}
.development-visual{min-height:760px}.development-visual picture,.development-visual img{height:100%}.development-visual img{object-fit:cover}
.development-copy{padding:clamp(72px,8vw,126px) clamp(36px,6vw,94px)}.development-copy h2{font-size:clamp(46px,5.4vw,82px);margin:0 0 28px}.development-copy>p:not(.eyebrow){color:#59646d}
.record-list{list-style:none;padding:0;margin:48px 0 0;border-top:1px solid #aeb7bd}.record-list li{display:grid;grid-template-columns:94px 1fr;gap:22px;padding:24px 0;border-bottom:1px solid #aeb7bd}.record-list time{color:#00727a;font-size:12px;font-weight:700;letter-spacing:.12em}.record-list h3{margin:0 0 7px;font-size:18px}.record-list p{margin:0;color:#5a656d;font-size:14px}
.contact{display:grid;grid-template-columns:38% 62%;background:#fff;padding:clamp(76px,9vw,138px) clamp(36px,7vw,112px);gap:clamp(50px,7vw,110px)}
.contact-heading h2{margin:0 0 28px;font-size:clamp(46px,5vw,76px)}.contact-heading>p:not(.eyebrow){color:#59646d}
.inquiry-form{align-self:start}.field-row{display:grid;grid-template-columns:1fr 1fr;gap:24px}.inquiry-form label{display:grid;gap:9px;margin-bottom:22px;font-size:12px;font-weight:700;letter-spacing:.06em}.inquiry-form input,.inquiry-form select,.inquiry-form textarea{width:100%;border:0;border-bottom:1px solid #8c979f;border-radius:0;background:#f3f6f7;padding:13px 14px;color:var(--ink);min-height:50px}.inquiry-form textarea{resize:vertical;min-height:132px}.inquiry-form input:focus,.inquiry-form select:focus,.inquiry-form textarea:focus{outline:3px solid rgba(5,207,224,.35);outline-offset:0;border-color:#00727a}.form-footer{display:flex;align-items:center;gap:24px;flex-wrap:wrap}.form-footer button{min-height:52px;padding:0 22px;border:1px solid var(--ink);background:var(--ink);color:#fff;font-weight:700;cursor:pointer}.form-footer button:hover{background:var(--cyan-bright);color:var(--ink)}.form-status{display:none;margin:0;color:#8f3f0a;font-size:14px}.form-status.is-visible{display:block}
.site-footer{display:grid;grid-template-columns:1.5fr auto 1fr;align-items:center;gap:30px;padding:38px clamp(36px,7vw,112px);background:var(--ink);color:#e8eef1;font-size:12px}.footer-brand{font-weight:700}.footer-brand .brand-mark{width:34px;height:34px}.site-footer nav{display:flex;gap:22px}.site-footer nav a{min-width:44px;min-height:44px;display:flex;align-items:center;justify-content:center}.site-footer>p{text-align:right;color:#8e999f;margin:0}
@media (max-width:1100px){.hero{grid-template-columns:44% 56%}.hero h1{font-size:54px}.hero-register{display:none}.section-heading{grid-template-columns:1fr 1.2fr}.section-heading>p:last-child{grid-column:2}.product-strip{grid-template-columns:76px 38% 1fr}.research,.development{grid-template-columns:1fr 1fr}.contact{grid-template-columns:1fr 1.4fr}}
@media (max-width:820px){html{scroll-padding-top:70px}.site-header{height:70px;padding:0 20px}.brand strong{font-size:13px}.menu-toggle{display:flex;align-items:center;justify-content:flex-end}.site-nav{position:fixed;z-index:49;inset:70px 0 0;display:flex;flex-direction:column;align-items:stretch;justify-content:center;gap:0;padding:30px;background:var(--ink);visibility:hidden;opacity:0;transform:translateY(-18px);transition:opacity .2s ease,transform .2s ease,visibility .2s}.site-nav.is-open{visibility:visible;opacity:1;transform:none}.site-nav a{min-height:64px;border-bottom:1px solid #343d43;font-family:"Signal Display","Microsoft YaHei",sans-serif;font-size:28px}.signal-spine{top:70px;height:calc(100vh - 70px);left:7px}.hero{display:block;min-height:auto}.hero-copy{padding:72px 28px 54px}.hero h1{font-size:clamp(46px,12vw,68px);white-space:normal}.hero-media{min-height:540px}.section-heading{display:block;padding:80px 28px 42px}.section-heading h2{font-size:clamp(46px,11vw,68px)}.section-heading>p:last-child{margin-top:26px}.product-strip,.product-clock{display:grid;grid-template-columns:54px 1fr;min-height:0}.product-number{grid-row:1 / span 2}.product-copy,.product-clock .product-copy{order:initial;padding:52px 28px}.product-strip picture,.product-clock picture{order:initial;grid-column:2;min-height:380px}.research,.development{display:block}.research-media,.development-visual{min-height:520px}.research-copy,.development-copy{padding:76px 28px}.manufacturing{padding:80px 28px 100px}.dark-heading{padding:0 0 54px}.manufacturing-flow article,.manufacturing-flow .flow-reverse{display:block}.flow-reverse .flow-copy,.flow-reverse picture{order:initial}.flow-rail{left:14px}.flow-copy{padding:46px 28px 36px 44px}.manufacturing-flow picture{min-height:400px;margin-left:28px}.contact{display:block;padding:78px 28px}.inquiry-form{margin-top:54px}.site-footer{grid-template-columns:1fr;padding:34px 28px}.site-footer>p{text-align:left}}
@media (max-width:520px){.brand small{display:none}.hero-copy{padding-top:58px}.hero-actions{align-items:stretch;flex-direction:column}.primary-action,.text-action{width:100%}.text-action{justify-content:center}.hero-media{min-height:390px}.hero-media img{object-position:58% center}.hero-media figcaption{right:14px;left:14px;bottom:14px}.product-strip picture{min-height:290px}.product-copy h3{font-size:44px}.research-media,.development-visual{min-height:390px}.discipline-list li{grid-template-columns:42px .75fr 1.4fr}.manufacturing-flow picture{min-height:300px}.field-row{grid-template-columns:1fr;gap:0}.site-footer nav{flex-wrap:wrap;gap:8px 22px}}
@media (prefers-reduced-motion:reduce){:root{scroll-behavior:auto;--signal-progress:100%;--flow-progress:100%}*,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}.signal-spine i,.flow-rail i{top:auto;bottom:0}.product-strip:hover img{transform:none}}