:root{--sand:#efe7d8;--terracotta:#c4633f;--olive:#6b7048;--clay:#cf9a6f;--charcoal:#2b251d;--oat:#e6dac5;--cream:#f8f1e5;--line:rgba(43,37,29,.2);--serif:Georgia,"Noto Serif SC","Songti SC",serif;--sans:Inter,"Noto Sans SC","Microsoft YaHei",sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:92px}body{margin:0;background:var(--sand);color:var(--charcoal);font-family:var(--sans);overflow-x:hidden}a{color:inherit;text-decoration:none}img{display:block;width:100%;height:100%;object-fit:cover}button,input,textarea{font:inherit}.site-header{position:fixed;z-index:30;top:14px;left:3vw;right:3vw;height:66px;display:flex;align-items:center;gap:26px;padding:0 12px 0 18px;border:1px solid rgba(43,37,29,.15);border-radius:18px;background:rgba(239,231,216,.82);backdrop-filter:blur(14px);box-shadow:0 10px 32px rgba(43,37,29,.09)}.brand{display:flex;align-items:center;gap:10px;font-size:13px;font-weight:850;white-space:nowrap}.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:50%;background:var(--charcoal);color:var(--sand);font-family:var(--serif);font-size:13px}.site-header nav{display:flex;justify-content:center;gap:24px;flex:1;font-size:11px;font-weight:800}.site-header nav a:hover,.line-link:hover{color:var(--terracotta)}.mobile-nav{display:none}.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 23px;border:1px solid var(--charcoal);border-radius:4px;background:var(--charcoal);color:var(--sand);font-size:12px;font-weight:850;cursor:pointer;transition:transform .25s,background .25s}.button:hover{transform:translateY(-2px);background:#453b2f}.button-small{min-height:40px;padding:0 17px}.line-link{padding-bottom:4px;border-bottom:1px solid currentColor;font-size:12px;font-weight:850}.section-no{display:block;margin-bottom:24px;color:var(--terracotta);font-family:var(--serif);font-size:28px}.section{position:relative;padding:118px 6vw}.section h2{margin:0;font-family:var(--serif);font-size:clamp(48px,6.1vw,88px);font-weight:500;line-height:.96;letter-spacing:-.055em}.section p{font-size:15px;line-height:1.8}.media{position:relative;overflow:hidden;border-radius:26px;background:var(--oat);box-shadow:0 18px 48px rgba(43,37,29,.12)}.media img{filter:saturate(.9);transition:transform .75s ease,filter .75s ease}.media:hover img{transform:scale(1.025);filter:saturate(1.05)}.disclosure{font-size:10px!important;font-weight:850;letter-spacing:.08em;color:#695f54}
.hero{position:relative;min-height:900px;padding:142px 6vw 72px;display:grid;grid-template-columns:5fr 7fr;align-items:center;gap:5vw;background:var(--sand);overflow:hidden}.hero:before{content:"";position:absolute;width:520px;height:520px;border-radius:46% 54% 60% 40%;background:var(--clay);left:-260px;bottom:-320px;opacity:.58}.hero-copy{position:relative;z-index:2}.hero h1{margin:0;font-family:var(--serif);font-size:clamp(72px,9.4vw,138px);font-weight:500;line-height:.83;letter-spacing:-.075em}.hero h1 em{font-weight:500;color:var(--terracotta)}.lead{max-width:520px;margin:34px 0 28px;font-size:17px;line-height:1.8;color:#5e554b}.actions{display:flex;align-items:center;gap:22px;margin-bottom:28px}.media-hero{height:650px;border-radius:52% 48% 24px 24px}.hero-stamp{position:absolute;z-index:3;right:4vw;bottom:48px;width:250px;padding:22px;background:var(--olive);color:var(--cream);border-radius:24px 4px 24px 4px;box-shadow:0 16px 34px rgba(43,37,29,.2)}.hero-stamp strong,.hero-stamp span{display:block}.hero-stamp strong{font-family:var(--serif);font-size:22px;font-weight:500}.hero-stamp span{margin-top:7px;font-size:10px;letter-spacing:.11em}
.business{display:grid;grid-template-columns:5fr 7fr;gap:5vw;background:var(--cream)}.section-title{max-width:620px}.section-title h2{font-size:clamp(50px,5vw,74px)}.section-title>p{max-width:580px;color:#62584d}.open-list{border-top:1px solid var(--line)}.open-list article{display:grid;grid-template-columns:48px 1fr;gap:20px;padding:28px 0;border-bottom:1px solid var(--line)}.open-list article>span{font-family:var(--serif);font-size:16px;color:var(--terracotta)}.open-list h3{margin:0 0 10px;font-family:var(--serif);font-size:30px;font-weight:500}.open-list p{margin:0;color:#6a6156;font-size:13px}.media-wide{grid-column:1/-1;height:520px;margin-top:36px;border-radius:120px 26px 26px 26px}
.structure{min-height:810px;display:grid;grid-template-columns:5fr 7fr;align-items:center;gap:6vw;background:var(--sand)}.structure-copy{max-width:600px}.structure-copy>p{color:#63594e}.boundary-line{display:grid;grid-template-columns:130px 1fr;gap:18px;padding:18px 0;border-top:1px solid var(--line);font-size:12px}.boundary-line:last-child{border-bottom:1px solid var(--line)}.boundary-line strong{color:var(--terracotta)}.media-structure{height:610px;border-radius:28px 48% 28px 28px}
.manufacturing{min-height:900px;display:grid;grid-template-columns:4fr 5fr 3fr;gap:3vw;align-items:center;background:var(--charcoal);color:var(--sand)}.manufacturing-copy h2{font-size:clamp(48px,5vw,76px)}.manufacturing-copy>p{color:#cfc3b2}.manufacturing .section-no{color:var(--clay)}.button-light{margin-top:18px;background:var(--sand);color:var(--charcoal);border-color:var(--sand)}.media-manufacturing{height:620px;border-radius:180px 180px 26px 26px;box-shadow:none}.media-motion{height:420px;align-self:end;border-radius:50% 50% 24px 24px;box-shadow:none}
.quality{display:grid;grid-template-columns:4fr 5fr 3fr;gap:4vw;align-items:start;background:var(--oat)}.quality-copy h2{font-size:clamp(46px,4.8vw,70px)}.quality-copy>p{color:#61584e}.ledger{border-top:2px solid var(--charcoal)}.ledger>div{display:grid;grid-template-columns:1.1fr 1.2fr 1.7fr;gap:14px;padding:18px 0;border-bottom:1px solid var(--line);font-size:12px;line-height:1.5}.ledger-head{font-size:9px!important;font-weight:850;letter-spacing:.1em;text-transform:uppercase;color:#796f63}.ledger strong{color:var(--terracotta)}.media-quality{height:480px;border-radius:24px 24px 120px 24px}
.signal{min-height:780px;display:grid;grid-template-columns:6fr 6fr;align-items:center;gap:7vw;background:var(--olive);color:var(--cream)}.light{color:var(--sand)}.signal-copy{max-width:650px}.signal-copy>p{color:#e4dbc9;font-size:16px}.note{padding-left:16px;border-left:2px solid var(--clay);font-size:12px!important}.button-sand{margin-top:18px;background:var(--sand);color:var(--charcoal);border-color:var(--sand)}.media-signal{height:620px;border-radius:52% 48% 26px 26px;box-shadow:none}
.history{display:grid;grid-template-columns:4fr 5fr 3fr;gap:4vw;align-items:start;background:var(--cream)}.history-head h2{font-size:clamp(48px,5vw,72px)}.history-head>p{color:#62594e}.timeline{padding-top:8px}.timeline>div{display:grid;grid-template-columns:64px 18px 1fr;gap:15px;min-height:142px}.timeline time{font-family:var(--serif);font-size:18px;color:var(--terracotta)}.timeline>div>span{position:relative;width:2px;background:var(--line)}.timeline>div>span:before{content:"";position:absolute;top:3px;left:-5px;width:12px;height:12px;border-radius:50%;background:var(--terracotta)}.timeline article{padding-bottom:28px}.timeline h3{margin:0 0 8px;font-family:var(--serif);font-size:24px;font-weight:500}.timeline p{margin:0;color:#6b6258;font-size:12px}.media-history{height:620px;border-radius:50% 50% 24px 24px}
.contact{display:grid;grid-template-columns:6fr 6fr;gap:7vw;background:var(--terracotta);color:var(--cream)}.contact-copy>p{max-width:600px}.contact .section-no{color:var(--charcoal)}.contact form{display:grid;gap:16px;margin-top:32px}.contact label{display:grid;gap:7px;font-size:10px;font-weight:850;letter-spacing:.08em}.contact input,.contact textarea{width:100%;padding:14px 15px;border:1px solid rgba(248,241,229,.4);border-radius:4px;background:rgba(248,241,229,.1);color:var(--cream);outline:none}.contact input:focus,.contact textarea:focus{border-color:var(--cream)}.contact input::placeholder,.contact textarea::placeholder{color:#ead2c3}.contact form .button{width:max-content;background:var(--charcoal);border-color:var(--charcoal)}#form-status{min-height:22px;font-size:12px}.sources{align-self:center;padding:42px;background:var(--sand);color:var(--charcoal);border-radius:60px 6px 60px 6px}.sources h3{margin:0 0 24px;font-family:var(--serif);font-size:36px;font-weight:500}.sources ol{margin:0;padding:0;list-style:none;border-top:1px solid var(--line)}.sources li{border-bottom:1px solid var(--line)}.sources a{display:grid;grid-template-columns:32px 1fr;gap:14px;padding:17px 0;font-size:12px;font-weight:800}.sources a span{font-family:var(--serif);color:var(--terracotta)}.sources a:hover{color:var(--terracotta)}.sources>p{font-size:10px;color:#71675c}
footer{min-height:120px;padding:30px 6vw;display:flex;align-items:center;justify-content:space-between;gap:24px;background:#201b16;color:var(--sand)}footer .brand-mark{background:var(--terracotta)}footer .disclosure{color:var(--oat)}
@media(max-width:1050px){.site-header>nav{display:none}.site-header .brand{margin-right:auto}.mobile-nav{display:block;position:relative}.mobile-nav summary{display:flex;align-items:center;justify-content:center;min-height:40px;padding:0 15px;border:1px solid var(--line);border-radius:4px;font-size:11px;font-weight:850;cursor:pointer;list-style:none}.mobile-nav summary::-webkit-details-marker{display:none}.site-header .mobile-nav nav{display:none;position:absolute;top:50px;right:0;width:220px;padding:14px;flex-direction:column;align-items:stretch;gap:0;border:1px solid var(--line);border-radius:18px 4px 18px 4px;background:var(--cream);box-shadow:0 18px 40px rgba(43,37,29,.18)}.site-header .mobile-nav[open] nav{display:flex}.site-header .mobile-nav nav a{padding:13px 12px;border-bottom:1px solid var(--line)}.site-header .mobile-nav nav a:last-child{border-bottom:0}.hero,.business,.structure,.signal,.contact{grid-template-columns:1fr}.manufacturing,.quality,.history{grid-template-columns:1fr}.hero{padding-top:120px}.hero-stamp{position:relative;right:auto;bottom:auto;width:100%;grid-column:1;margin-top:-60px}.media-hero,.media-structure,.media-signal{height:540px}.manufacturing .media-motion{height:360px}.quality .media-quality,.history .media-history{height:520px}.sources{margin-top:20px}}
@media(max-width:640px){.site-header{top:10px;left:10px;right:10px;height:58px;gap:10px}.site-header .brand>span:last-child{display:none}.site-header .button-small{min-height:38px;padding:0 12px}.mobile-nav summary{min-height:38px;padding:0 12px}.hero{min-height:0;padding:108px 20px 70px;gap:32px}.hero h1{font-size:58px}.lead{font-size:14px;margin:24px 0}.actions{align-items:flex-start;flex-direction:column;gap:16px}.media-hero{height:430px}.hero-stamp{margin-top:-52px}.section{padding:86px 20px}.section h2{font-size:42px}.section p{font-size:13px}.business{gap:34px}.open-list h3{font-size:25px}.media-wide{height:320px;border-radius:70px 20px 20px 20px}.media-structure,.media-signal{height:450px}.manufacturing{gap:30px}.media-manufacturing{height:460px}.manufacturing .media-motion{height:290px}.quality{gap:32px}.ledger{overflow:visible}.ledger>div{grid-template-columns:1fr;gap:6px;min-width:0}.ledger-head{display:none!important}.ledger>div:not(.ledger-head)>span:first-of-type:before{content:"资料方向 · ";font-weight:850;color:#796f63}.ledger>div:not(.ledger-head)>span:last-child:before{content:"确认方式 · ";font-weight:850;color:#796f63}.quality .media-quality,.history .media-history{height:430px}.history{gap:34px}.sources{padding:28px 20px;border-radius:36px 5px 36px 5px}.sources h3{font-size:30px}footer{align-items:flex-start;flex-direction:column}.footer-brand>span:last-child{display:inline}.button{min-height:46px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}