@font-face{font-family:Smiley;src:url("assets/fonts/smiley-sans-display.woff2") format("woff2");font-display:swap}
:root{--ink:#f2f4f4;--muted:#a4afb2;--oil:#05080b;--deep:#0a1116;--steel:#c3ccd0;--line:rgba(201,216,222,.22);--signal:#e34730;--signal-soft:#ff735f;--paper:#e8ecec;--paper-ink:#172126;--accent-light:#9e2a1f;--green:#8ca79b;--max:1520px;--pad:clamp(20px,4vw,72px)}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--oil);color:var(--ink);font-family:"Microsoft YaHei","Noto Sans CJK SC",sans-serif;font-size:16px;line-height:1.6;overflow-x:hidden}
body.menu-open{overflow:hidden}
a{color:inherit}
img{display:block;width:100%;height:auto}
button,input,select,textarea{font:inherit;color:inherit}
button{appearance:none}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:fixed;z-index:999;left:16px;top:-60px;background:var(--ink);color:var(--oil);padding:10px 16px;text-decoration:none}
.skip-link:focus{top:16px}
:focus-visible{outline:3px solid #fff;outline-offset:4px}
::selection{background:var(--signal);color:var(--oil)}
::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-track{background:var(--oil)}
::-webkit-scrollbar-thumb{background:#455359;border:3px solid var(--oil)}

.site-header{height:84px;position:fixed;z-index:50;left:0;right:0;top:0;display:flex;align-items:center;justify-content:space-between;padding:0 var(--pad);border-bottom:1px solid var(--line);background:rgba(5,8,11,.8);backdrop-filter:blur(18px)}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand-mark{width:42px;height:42px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round}
.brand-mark>circle:first-child{stroke:var(--steel);opacity:.75}
.brand-mark .brand-signal{fill:var(--signal);stroke:none}
.brand span{display:grid;line-height:1.05}
.brand strong{font-family:Smiley,"Microsoft YaHei",sans-serif;font-size:18px;font-weight:500;letter-spacing:.08em}
.brand small{font-size:8px;letter-spacing:.15em;color:var(--muted);margin-top:6px;white-space:nowrap}
.site-nav{display:flex;align-items:center;gap:clamp(18px,2.4vw,42px)}
.site-nav a{font-size:13px;text-decoration:none;color:#d8e0e3;transition:color .22s ease}
.site-nav a:hover{color:#fff}
.site-nav .nav-cta{border-left:1px solid var(--line);padding-left:clamp(18px,2.4vw,42px);color:#fff}
.menu-toggle{display:none;background:transparent;border:0;width:48px;height:48px;padding:12px;cursor:pointer}
.menu-toggle i{display:block;height:1px;background:#fff;margin:8px 0;transition:transform .22s ease,opacity .22s ease}

.hero{min-height:100svh;position:relative;isolation:isolate;display:flex;align-items:end;padding:148px var(--pad) 8vh;overflow:hidden}
.hero>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center}
.hero-shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(4,7,10,.98) 0%,rgba(4,7,10,.84) 34%,rgba(4,7,10,.18) 76%),linear-gradient(0deg,rgba(4,7,10,.92),transparent 44%);z-index:1}
.hero-copy{position:relative;z-index:2;max-width:850px}
.hero-index{display:flex;align-items:center;gap:18px;margin:0 0 30px;font-size:11px;letter-spacing:.18em}
.hero-index span{color:var(--signal)}
.hero-index b{font-weight:400;color:var(--muted)}
h1,h2{font-family:Smiley,"Microsoft YaHei",sans-serif;font-weight:500;margin:0;line-height:.98;letter-spacing:-.035em}
h1{font-size:clamp(54px,7.8vw,124px)}
h1 em,h2 em{font-style:normal;color:transparent;-webkit-text-stroke:1px rgba(242,244,244,.7)}
.lead{max-width:650px;font-size:clamp(16px,1.35vw,21px);color:#c9d3d6;margin:34px 0}
.hero-actions{display:flex;align-items:center;gap:32px}
.button{min-height:48px;display:inline-flex;align-items:center;justify-content:center;border:1px solid transparent;padding:12px 25px;text-decoration:none;cursor:pointer;transition:background .22s ease,color .22s ease,border-color .22s ease}
.button-primary{background:var(--signal);color:var(--oil)}
.button-primary:hover{background:#ff674f}
.text-link,.arrow-link{display:inline-flex;align-items:center;gap:11px;text-decoration:none;border-bottom:1px solid var(--steel);padding:10px 0}
.text-link:hover,.arrow-link:hover{border-color:var(--signal-soft);color:#fff}
.arrow-icon{width:10px;height:10px;display:inline-block;border-top:1px solid currentColor;border-right:1px solid currentColor;transform:rotate(45deg);margin-right:3px}
.hero-axis{position:absolute;z-index:2;left:0;right:0;top:56%;display:flex;align-items:center;gap:12px;pointer-events:none;animation:axis-pulse 5.4s ease-out infinite}
.hero-axis span{height:1px;flex:1;background:linear-gradient(90deg,transparent 0%,rgba(227,71,48,.1) 25%,rgba(227,71,48,.75) 75%,transparent)}
.hero-axis i{width:7px;height:7px;background:var(--signal);transform:rotate(45deg);box-shadow:0 0 0 6px rgba(227,71,48,.1)}
.hero-axis b{height:1px;flex:1;background:linear-gradient(90deg,rgba(227,71,48,.7),rgba(201,216,222,.1) 60%,transparent)}
@keyframes axis-pulse{0%,100%{opacity:.38}45%{opacity:1}70%{opacity:.6}}
.hero-legend{position:absolute;z-index:2;right:var(--pad);bottom:9vh;display:grid;gap:10px;color:var(--muted);font:9px/1 "Microsoft YaHei",sans-serif;letter-spacing:.2em;text-align:right}
.hero-legend b{font-family:Smiley,sans-serif;font-size:54px;line-height:.8;font-weight:400;color:rgba(242,244,244,.72)}

.signal-band{border-top:1px solid var(--line);border-bottom:1px solid var(--line);min-height:106px;display:grid;grid-template-columns:repeat(4,1fr);padding:0 var(--pad)}
.signal-band p{margin:0;padding:23px 20px;display:grid;gap:7px;border-right:1px solid var(--line)}
.signal-band p:first-child{padding-left:0}
.signal-band p:last-child{border:0;padding-right:0}
.signal-band span{font-size:10px;letter-spacing:.16em;color:var(--muted)}
.signal-band b{font-family:Smiley,"Microsoft YaHei",sans-serif;font-size:clamp(18px,1.7vw,25px);font-weight:500;line-height:1.2}

.section-heading{display:grid;grid-template-columns:1.05fr .95fr;gap:9vw;align-items:end;padding:clamp(94px,11vw,170px) var(--pad) 70px}
.section-index{font-size:10px;letter-spacing:.2em;color:var(--signal);margin:0 0 28px}
.section-heading h2,.parts-copy h2,.alignment-copy h2,.path-copy h2,.inspection-copy h2,.project-copy h2,.loop-copy h2,.contact-heading h2{font-size:clamp(46px,6.2vw,98px)}
.section-heading>p:last-child{color:var(--muted);margin:0;max-width:560px;font-size:16px}
.focus{background:var(--oil)}
.focus-media{position:relative;margin:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);overflow:hidden}
.focus-media img{aspect-ratio:16/8.4;object-fit:cover;object-position:center 56%}
.focus-media figcaption,.path-media figcaption,.project-media figcaption{position:absolute;left:0;right:0;bottom:0;display:flex;align-items:center;justify-content:space-between;padding:15px 20px;background:rgba(5,8,11,.8);backdrop-filter:blur(12px);font-size:11px;letter-spacing:.13em}
.focus-media figcaption span,.path-media figcaption span,.project-media figcaption span{color:var(--muted)}
.focus-media figcaption b,.path-media figcaption b,.project-media figcaption b{font-weight:400}
.focus-rail{display:grid;grid-template-columns:repeat(3,1fr);padding:0 var(--pad);border-bottom:1px solid var(--line)}
.focus-rail p{margin:0;padding:27px 20px 31px;border-right:1px solid var(--line);display:grid;grid-template-columns:auto 1fr;column-gap:15px;align-items:end}
.focus-rail p:first-child{padding-left:0}
.focus-rail p:last-child{border:0;padding-right:0}
.focus-rail b{grid-row:span 2;font:10px "Microsoft YaHei",sans-serif;color:var(--signal);align-self:start}
.focus-rail span{font-family:Smiley,"Microsoft YaHei",sans-serif;font-size:clamp(19px,1.8vw,28px)}
.focus-rail small{grid-column:2;color:var(--muted);font-size:11px;letter-spacing:.1em}

.parts{display:grid;grid-template-columns:minmax(320px,.9fr) 1.1fr;min-height:900px;border-bottom:1px solid var(--line)}
.parts-media{position:relative;overflow:hidden;background:#080d11}
.parts-media img{width:100%;height:100%;min-height:840px;object-fit:cover;object-position:center center;transition:transform .8s cubic-bezier(.2,.8,.2,1)}
.parts-media:hover img{transform:scale(1.02)}
.image-stamp{position:absolute;left:var(--pad);bottom:28px;display:flex;align-items:center;gap:16px;color:#e8edef;font-size:9px;letter-spacing:.19em}
.image-stamp b{display:grid;place-items:center;width:29px;height:29px;border:1px solid rgba(232,237,239,.58);font-family:Smiley,sans-serif;font-size:15px;font-weight:400;color:var(--signal)}
.parts-copy{align-self:center;padding:clamp(84px,10vw,160px) var(--pad)}
.parts-copy>p:not(.section-index){max-width:510px;color:var(--muted);margin:36px 0 45px;font-size:16px}
.relation-list{max-width:510px;margin:0 0 43px;border-top:1px solid var(--line)}
.relation-list div{display:flex;align-items:center;justify-content:space-between;padding:16px 0;border-bottom:1px solid var(--line)}
.relation-list dt{font-family:Smiley,"Microsoft YaHei",sans-serif;font-size:21px}
.relation-list dd{margin:0;color:var(--muted);font-size:11px;letter-spacing:.16em}

.alignment{display:grid;grid-template-columns:1.25fr .75fr;min-height:700px;background:#10191f;border-bottom:1px solid var(--line)}
.alignment figure{margin:0;min-height:700px;overflow:hidden}
.alignment figure img{height:100%;min-height:700px;object-fit:cover;object-position:center}
.alignment-copy{align-self:center;padding:80px var(--pad)}
.alignment-copy>p:not(.section-index){max-width:440px;color:#afbdc1;margin:34px 0 45px}
.datum-line{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;color:var(--muted);font-size:9px;letter-spacing:.17em}
.datum-line i{height:1px;background:linear-gradient(90deg,var(--signal),rgba(201,216,222,.16));position:relative}
.datum-line b{width:7px;height:7px;background:var(--signal);transform:rotate(45deg);margin-left:-20px}
.datum-line strong{font-weight:400}

.path{display:grid;grid-template-columns:.75fr 1.25fr;min-height:940px;border-bottom:1px solid var(--line)}
.path-copy{align-self:center;padding:clamp(84px,10vw,160px) var(--pad)}
.path-copy>p:not(.section-index){max-width:470px;color:var(--muted);margin:34px 0 45px}
.path-copy ol{list-style:none;padding:0;margin:0;border-top:1px solid var(--line);max-width:520px}
.path-copy li{display:grid;grid-template-columns:35px 1fr auto;gap:15px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line)}
.path-copy li b{font:10px "Microsoft YaHei",sans-serif;color:var(--signal)}
.path-copy li span{font-family:Smiley,"Microsoft YaHei",sans-serif;font-size:20px}
.path-copy li small{color:var(--muted);font-size:10px;letter-spacing:.15em}
.path-media{position:relative;margin:0;overflow:hidden;background:#080d11}
.path-media img{height:100%;min-height:820px;object-fit:cover;object-position:center}

.inspection{display:grid;grid-template-columns:1fr .8fr;min-height:850px;background:var(--paper);color:var(--paper-ink);border-bottom:1px solid #bec8cb}
.inspection-copy{align-self:center;padding:clamp(86px,11vw,170px) var(--pad)}
.inspection .section-index{color:var(--accent-light)}
.inspection-copy h2 em{color:transparent;-webkit-text-stroke:1px rgba(23,33,38,.7)}
.inspection-copy>p:not(.section-index){max-width:510px;color:#52636a;margin:36px 0 48px}
.inspection-notes{display:flex;flex-wrap:wrap;gap:9px 24px;max-width:500px;border-top:1px solid #9eabad;padding-top:17px;color:#68777c;font-size:9px;letter-spacing:.16em}
.inspection figure{position:relative;margin:0;min-height:850px;overflow:hidden;background:#d7ddde}
.inspection figure img{height:100%;min-height:850px;object-fit:cover;object-position:center}
.inspection figcaption{position:absolute;right:20px;bottom:20px;padding:10px 12px;background:rgba(232,236,236,.82);color:#4f5f65;font-size:9px;letter-spacing:.17em}

.project{display:grid;grid-template-columns:.85fr 1.15fr;border-bottom:1px solid var(--line)}
.project-copy{align-self:center;padding:clamp(84px,10vw,160px) var(--pad)}
.project-name{font-family:Smiley,"Microsoft YaHei",sans-serif;font-size:clamp(21px,2vw,32px);line-height:1.3;margin:48px 0 23px;color:#dce5e8}
.project-data{margin:0 0 30px;border-top:1px solid var(--line)}
.project-data div{display:flex;justify-content:space-between;align-items:baseline;gap:20px;padding:13px 0;border-bottom:1px solid var(--line)}
.project-data dt{font-size:11px;color:var(--muted)}
.project-data dd{font-size:14px;margin:0;text-align:right}
.boundary-note{font-size:12px;color:var(--muted);border-left:2px solid var(--green);padding-left:16px;margin:0;max-width:590px}
.project-media{position:relative;margin:0;min-height:900px;overflow:hidden}
.project-media img{height:100%;min-height:900px;object-fit:cover;object-position:center}

.loop{display:grid;grid-template-columns:1.2fr .8fr;align-items:center;background:#0c1514;border-bottom:1px solid var(--line)}
.loop figure{margin:0;height:700px;overflow:hidden}
.loop figure img{height:100%;object-fit:cover;object-position:center}
.loop-copy{padding:80px var(--pad)}
.loop .section-index{color:#a8c0b6}
.loop-copy>p:not(.section-index){max-width:510px;color:#aab8b3;margin:36px 0 45px}

.contact{display:grid;grid-template-columns:.85fr 1.15fr;gap:8vw;border-bottom:1px solid var(--line)}
.contact-heading{padding:clamp(84px,10vw,160px) var(--pad)}
.contact-heading>p:not(.section-index){max-width:520px;color:var(--muted);margin:36px 0 0}
.inquiry-form{align-self:center;padding:80px var(--pad) 80px 0;display:grid;grid-template-columns:1fr 1fr;gap:29px}
.inquiry-form label{display:grid;gap:8px}
.inquiry-form label span{font-size:11px;color:var(--muted);letter-spacing:.08em}
.inquiry-form .full{grid-column:1/-1}
.inquiry-form input,.inquiry-form select,.inquiry-form textarea{width:100%;border:0;border-bottom:1px solid var(--steel);background:transparent;padding:12px 0;min-height:48px;border-radius:0}
.inquiry-form input::placeholder,.inquiry-form textarea::placeholder{color:#829095}
.inquiry-form select{background:var(--oil)}
.inquiry-form textarea{resize:vertical;min-height:104px}
.inquiry-form .button{justify-self:start}
.form-status{grid-column:1/-1;min-height:24px;margin:0;color:#ff9a88;font-size:13px}

footer{padding:60px var(--pad);display:flex;justify-content:space-between;align-items:end;gap:40px}
.footer-brand .brand-mark{width:64px;height:64px}
.footer-brand strong{font-size:22px}
.footer-meta{text-align:right;color:var(--muted);font-size:11px}
.footer-meta p{margin:4px 0}

@media(max-width:980px){
  .site-header{height:72px}
  .menu-toggle{display:block;position:relative;z-index:52}
  .site-nav{position:absolute;z-index:51;inset:auto 0 auto 0;top:71px;height:calc(100svh - 71px);padding:38px var(--pad) 50px;overflow-y:auto;background:#071017;display:grid;align-content:start;gap:0;transform:translateX(100%);visibility:hidden;transition:transform .3s ease}
  .site-nav.open{transform:none;visibility:visible}
  .site-nav a{font-family:Smiley,"Microsoft YaHei",sans-serif;font-size:clamp(32px,7vw,60px);padding:18px 0;border-bottom:1px solid var(--line)}
  .site-nav .nav-cta{padding-left:0;border-left:0;color:var(--signal-soft)}
  .menu-toggle[aria-expanded=true] i:first-of-type{transform:translateY(4.5px) rotate(45deg)}
  .menu-toggle[aria-expanded=true] i:last-of-type{transform:translateY(-4.5px) rotate(-45deg)}
  .hero{padding-top:120px}
  .section-heading{grid-template-columns:1fr 1fr}
  .section-heading>p:last-child{grid-column:2}
  .parts{grid-template-columns:.85fr 1.15fr}
  .alignment{grid-template-columns:1fr}
  .alignment figure,.alignment figure img{min-height:540px}
  .alignment-copy{padding-top:92px;padding-bottom:92px}
  .path{grid-template-columns:1fr}
  .path-copy{padding-bottom:80px}
  .path-media{min-height:590px}
  .path-media img{min-height:590px}
  .inspection{grid-template-columns:1fr}
  .inspection-copy{padding-bottom:82px}
  .inspection figure,.inspection figure img{min-height:560px}
  .project{grid-template-columns:1fr}
  .project-media,.project-media img{min-height:590px}
  .loop{grid-template-columns:1fr}
  .loop figure{height:560px}
  .contact{grid-template-columns:1fr}
  .contact-heading{padding-bottom:20px}
  .inquiry-form{padding:20px var(--pad) 100px}
}

@media(max-width:660px){
  :root{--pad:20px}
  html{scroll-padding-top:72px}
  .brand strong{font-size:16px}
  .brand small{font-size:7px}
  .brand-mark{width:38px;height:38px}
  .hero{min-height:820px;padding-bottom:57px}
  .hero>img{object-position:62% center}
  .hero-shade{background:linear-gradient(0deg,rgba(4,7,10,.98) 0%,rgba(4,7,10,.8) 56%,rgba(4,7,10,.18) 100%)}
  .hero-copy{padding-top:220px}
  .hero-index{display:grid;gap:8px;margin-bottom:21px}
  .hero-index b{letter-spacing:.14em}
  .lead{font-size:15px;margin:28px 0}
  .hero-actions{align-items:start;flex-direction:column;gap:12px}
  .hero-legend{display:none}
  .signal-band{grid-template-columns:1fr 1fr;padding:0}
  .signal-band p,.signal-band p:first-child,.signal-band p:last-child{padding:20px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
  .signal-band p:nth-child(2n){border-right:0}
  .signal-band p:nth-last-child(-n+2){border-bottom:0}
  .signal-band b{font-size:18px}
  .section-heading{display:block;padding-top:90px;padding-bottom:55px}
  .section-heading h2{margin-bottom:28px}
  .section-heading>p:last-child{display:block}
  .focus-media img{aspect-ratio:1/1;object-position:center}
  .focus-media figcaption,.path-media figcaption,.project-media figcaption{padding:12px 14px;font-size:9px}
  .focus-rail{grid-template-columns:1fr;padding:0}
  .focus-rail p,.focus-rail p:first-child,.focus-rail p:last-child{grid-template-columns:36px 1fr;padding:18px 20px;border-right:0;border-bottom:1px solid var(--line)}
  .focus-rail p:last-child{border-bottom:0}
  .focus-rail b{grid-row:span 2}
  .parts{display:flex;flex-direction:column;min-height:0}
  .parts-media{min-height:560px}
  .parts-media img{min-height:560px;height:140vw;max-height:760px}
  .parts-copy{padding-top:90px;padding-bottom:90px}
  .parts-copy>p:not(.section-index){margin-top:28px}
  .alignment figure,.alignment figure img{min-height:390px}
  .alignment-copy{padding:85px 20px}
  .alignment-copy>p:not(.section-index){margin-top:28px}
  .datum-line{gap:8px;font-size:8px}
  .path-copy{padding-top:90px;padding-bottom:75px}
  .path-copy>p:not(.section-index){margin-top:28px}
  .path-copy li{grid-template-columns:32px 1fr auto}
  .path-copy li span{font-size:19px}
  .path-media,.path-media img{min-height:400px}
  .inspection-copy{padding-top:90px;padding-bottom:70px}
  .inspection-copy>p:not(.section-index){margin-top:28px}
  .inspection figure,.inspection figure img{min-height:460px}
  .project-copy{padding-top:90px;padding-bottom:70px}
  .project-name{margin-top:38px}
  .project-data div{display:block;padding:13px 0}
  .project-data dd{text-align:left;margin-top:5px}
  .project-media,.project-media img{min-height:430px}
  .loop figure{height:400px}
  .loop-copy{padding:80px 20px}
  .loop-copy>p:not(.section-index){margin-top:28px}
  .contact-heading{padding-top:90px}
  .inquiry-form{grid-template-columns:1fr;gap:24px}
  .inquiry-form label{grid-column:1/-1}
  footer{display:block;padding-top:52px;padding-bottom:44px}
  .footer-brand .brand-mark{width:48px;height:48px}
  .footer-brand strong{font-size:17px}
  .footer-meta{text-align:left;margin-top:35px}
}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}