@font-face{font-family:"Display";src:url(fonts/barlow-semi-condensed-latin-500-normal.woff2) format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:"Display";src:url(fonts/barlow-semi-condensed-latin-700-normal.woff2) format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:"Mono";src:url(fonts/jetbrains-mono-latin-400-normal.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Mono";src:url(fonts/jetbrains-mono-latin-500-normal.woff2) format("woff2");font-weight:500;font-display:swap}

:root{
  --bg:#000;
  --panel:#0b0c0e;
  --line:rgba(255,255,255,.14);
  --line-2:rgba(255,255,255,.28);
  --text:#f4f4f2;
  --muted:rgba(244,244,242,.58);
  --dim:rgba(244,244,242,.36);
  --signal:#ff5a1f;
  --go:#3ddc97;
  --max:1360px;
  --sans:"Display","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --mono:"Mono","SFMono-Regular",Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:72px;background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
::selection{background:var(--signal);color:#000}

html[data-lang="zh"] [data-l="en"],
html[data-lang="en"] [data-l="zh"]{display:none !important}

.wrap{max-width:var(--max);margin:0 auto;padding:0 40px}
.mono{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase}
.caps{text-transform:uppercase;letter-spacing:.12em}

/* nav */
.top{position:fixed;inset:0 0 auto;z-index:40;transition:background .3s, border-color .3s;border-bottom:1px solid transparent}
.top.solid{background:rgba(0,0,0,.86);backdrop-filter:blur(12px);border-bottom-color:var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:12px}
.brand .mk{width:22px;height:22px;border:2px solid var(--text);border-radius:50%;position:relative}
.brand .mk::after{content:"";position:absolute;inset:5px;background:var(--signal);border-radius:50%}
.brand b{font-weight:700;font-size:17px;letter-spacing:.2em;text-transform:uppercase}
.brand small{font-size:13px;color:var(--muted);letter-spacing:.1em;border-left:1px solid var(--line-2);padding-left:12px}
.nav{display:flex;align-items:center;gap:30px}
.nav a{font-size:13px;font-weight:500;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);transition:color .2s}
.nav a:hover,.nav a.on{color:var(--text)}
.lang{display:flex;gap:2px;font-family:var(--mono);font-size:12px}
.lang button{background:none;border:0;cursor:pointer;color:var(--dim);padding:4px 6px;letter-spacing:.1em}
.lang button.on{color:var(--text)}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:14px;height:52px;padding:0 28px;border:1.5px solid var(--text);font-size:14px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;background:transparent;cursor:pointer;transition:background .2s,color .2s}
.btn:hover{background:var(--text);color:#000}
.btn .ar{width:16px;height:10px}
.btn.fill{background:var(--text);color:#000}
.btn.fill:hover{background:transparent;color:var(--text)}

/* photo layer */
.ph{position:absolute;inset:0;background:#0b0c0e center/cover no-repeat}
.ph.fallback{background:
  radial-gradient(80% 60% at 70% 30%,color-mix(in srgb,var(--c,#555) 38%,transparent),transparent 70%),
  repeating-linear-gradient(90deg,rgba(255,255,255,.04) 0 1px,transparent 1px 80px),
  repeating-linear-gradient(0deg,rgba(255,255,255,.04) 0 1px,transparent 1px 80px),#07080a}
.shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.55) 0%,rgba(0,0,0,.05) 30%,rgba(0,0,0,.25) 60%,rgba(0,0,0,.92) 100%)}

/* hero */
.hero{position:relative;height:100vh;min-height:640px;overflow:hidden}
.hero .slide{position:absolute;inset:0;opacity:0;transition:opacity 1.4s ease}
.hero .slide.on{opacity:1}
.hero .slide .ph{transform:scale(1.06);transition:transform 9s linear}
.hero .slide.on .ph{transform:scale(1)}
.hero .copy{position:absolute;left:0;right:0;bottom:0;padding-bottom:88px}
.hero .meta{display:flex;gap:22px;color:var(--muted);margin-bottom:18px}
.hero .meta .st{color:var(--go)}
.hero .big{font-weight:700;font-size:clamp(72px,11vw,168px);line-height:.9;letter-spacing:-.01em;font-variant-numeric:tabular-nums}
.hero .label{font-size:clamp(18px,1.8vw,26px);font-weight:500;letter-spacing:.06em;margin:14px 0 6px;text-transform:uppercase}
.hero .title{font-size:clamp(17px,1.4vw,20px);color:var(--muted);margin:0 0 30px}
.hero .dots{position:absolute;right:40px;bottom:96px;display:flex;flex-direction:column;align-items:flex-end;gap:14px}
.hero .count{font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--muted)}
.hero .bars{display:flex;gap:6px}
.hero .bars button{width:34px;height:2px;border:0;background:var(--line-2);cursor:pointer;padding:0;position:relative;overflow:hidden}
.hero .bars button i{position:absolute;inset:0;background:var(--text);transform:scaleX(0);transform-origin:left}
.hero .bars button.done i{transform:scaleX(1)}
.hero .bars button.on i{animation:fill var(--dur,7s) linear forwards}
@keyframes fill{to{transform:scaleX(1)}}
.hero .scroll{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);color:var(--dim)}

/* thesis */
.thesis{padding:160px 0 120px;border-bottom:1px solid var(--line)}
.thesis h1{font-weight:700;font-size:clamp(40px,5.4vw,84px);line-height:1.08;margin:0;max-width:1100px;letter-spacing:-.005em}
.thesis h1 em{font-style:normal;color:var(--signal)}
.thesis p{color:var(--muted);font-size:20px;max-width:720px;margin:34px 0 0}
.telemetry{display:grid;grid-template-columns:repeat(4,1fr);margin-top:90px;border-top:1px solid var(--line)}
.telemetry div{padding:26px 0 0;border-right:1px solid var(--line);padding-left:24px}
.telemetry div:first-child{padding-left:0}
.telemetry div:last-child{border-right:0}
.telemetry b{display:block;font-weight:700;font-size:clamp(44px,4.6vw,72px);line-height:1;font-variant-numeric:tabular-nums}
.telemetry span{display:block;margin-top:10px;color:var(--muted)}

/* section heads */
.sec{padding:120px 0}
.sec-top{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:48px}
.sec-top .mono{color:var(--signal);margin-bottom:14px;display:block}
.sec-top h2{margin:0;font-weight:700;font-size:clamp(34px,3.8vw,58px);line-height:1.08}
.sec-top p{margin:14px 0 0;color:var(--muted);max-width:640px}

/* manifest */
.controls{display:flex;justify-content:space-between;align-items:center;gap:24px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:14px 0;position:sticky;top:72px;background:rgba(0,0,0,.92);backdrop-filter:blur(10px);z-index:10}
.tabs{display:flex;flex-wrap:wrap;gap:6px 22px}
.tabs button{background:none;border:0;cursor:pointer;color:var(--dim);font-size:14px;letter-spacing:.1em;padding:6px 0;position:relative}
.tabs button:hover{color:var(--text)}
.tabs button.on{color:var(--text)}
.tabs button.on::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--signal)}
.tabs button sup{font-family:var(--mono);font-size:10px;color:var(--dim);margin-left:4px}
.find{display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--line-2);min-width:260px;padding:4px 0}
.find svg{width:16px;height:16px;color:var(--muted)}
.find input{background:none;border:0;outline:none;color:var(--text);font:inherit;font-size:15px;flex:1;min-width:0}
.find input::placeholder{color:var(--dim)}

.head-row,.row{display:grid;grid-template-columns:96px minmax(0,1fr) 170px 190px 110px 90px 28px;gap:24px;align-items:center}
.head-row{padding:16px 0;color:var(--dim);border-bottom:1px solid var(--line)}
.row{position:relative;padding:26px 0;border-bottom:1px solid var(--line);cursor:pointer;transition:background .25s}
.row::before{content:"";position:absolute;inset:0 -40px;background:rgba(255,255,255,.035);opacity:0;transition:opacity .25s;pointer-events:none}
.row:hover::before{opacity:1}
.row .id{font-family:var(--mono);font-size:13px;color:var(--muted);letter-spacing:.08em}
.row h3{margin:0;font-weight:700;font-size:23px;line-height:1.3}
.row .sub{color:var(--muted);font-size:15px;margin-top:4px}
.row .area{font-size:14px;letter-spacing:.08em;color:var(--muted);display:flex;align-items:center;gap:8px}
.row .area i{width:8px;height:8px;background:var(--c)}
.row .num{font-weight:700;font-size:32px;line-height:1;font-variant-numeric:tabular-nums}
.row .lv{display:flex;gap:3px}
.row .lv i{width:14px;height:4px;background:var(--line-2)}
.row .lv i.f{background:var(--text)}
.row .st{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--go);display:flex;align-items:center;gap:6px}
.row .st::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor;box-shadow:0 0 8px currentColor}
.row .go-ar{width:20px;height:12px;color:var(--dim);transition:transform .25s,color .25s}
.row:hover .go-ar{transform:translateX(5px);color:var(--text)}
.empty{padding:80px 0;text-align:center;color:var(--muted)}

.peek{position:fixed;z-index:30;width:360px;height:225px;pointer-events:none;opacity:0;transform:scale(.96);transition:opacity .2s,transform .2s;overflow:hidden;border:1px solid var(--line-2)}
.peek.on{opacity:1;transform:scale(1)}
.peek .ph{transition:none}

.cat-edu{--c:#4d7cff}.cat-health{--c:#ff5d5d}.cat-climate{--c:#2fcf8a}.cat-access{--c:#a77bff}.cat-community{--c:#ffa23a}.cat-food{--c:#b5d94a}.cat-safety{--c:#39c6d6}

/* checklist */
.check{display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:1px solid var(--line)}
.check .col{padding:40px 40px 40px 0}
.check .col+.col{border-left:1px solid var(--line);padding-left:40px;padding-right:0}
.poll{list-style:none;margin:0;padding:0}
.poll li{display:grid;grid-template-columns:40px 1fr auto;gap:18px;align-items:baseline;padding:18px 0;border-bottom:1px dashed var(--line)}
.poll li:last-child{border-bottom:0}
.poll .n{font-family:var(--mono);font-size:12px;color:var(--dim)}
.poll h4{margin:0;font-size:20px;font-weight:700;letter-spacing:.02em}
.poll p{margin:3px 0 0;color:var(--muted);font-size:15px}
.poll .state{font-family:var(--mono);font-size:12px;letter-spacing:.14em;padding:4px 10px;border:1px solid currentColor;color:var(--dim);transition:color .4s}
.poll li.lit .state{color:var(--go)}
.poll li.gate .state{color:var(--signal)}
.thresh{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line)}
.thresh div{padding:26px 24px;border-right:1px solid var(--line)}
.thresh div:last-child{border-right:0}
.thresh b{display:block;font-weight:700;font-size:48px;line-height:1}
.thresh span{display:block;color:var(--muted);margin-top:8px;font-size:15px}
.flow{margin-top:34px}
.flow .step{display:grid;grid-template-columns:40px 1fr;gap:18px;padding:16px 0;border-bottom:1px solid var(--line)}
.flow .step:last-child{border-bottom:0}
.flow .step .n{font-family:var(--mono);font-size:12px;color:var(--signal)}
.flow h4{margin:0;font-size:18px}
.flow p{margin:2px 0 0;color:var(--muted);font-size:15px}

/* propose band */
.band{position:relative;min-height:78vh;display:flex;align-items:flex-end;overflow:hidden;border-top:1px solid var(--line)}
.band .copy{position:relative;padding:0 0 100px;width:100%}
.band h2{font-weight:700;font-size:clamp(40px,5.6vw,92px);line-height:1.02;margin:0 0 20px;max-width:1000px}
.band p{color:var(--muted);font-size:19px;max-width:640px;margin:0 0 36px}
.why3{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line-2);margin:0 0 48px;max-width:1100px}
.why3 div{padding:22px 24px 0 0}
.why3 .mono{color:var(--signal)}
.why3 h4{margin:10px 0 4px;font-size:19px}
.why3 p{margin:0;font-size:15px}

footer{border-top:1px solid var(--line);padding:40px 0 48px;color:var(--dim)}
footer .wrap{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}

/* mission page */
.m-hero{position:relative;height:92vh;min-height:620px;overflow:hidden}
.m-hero .copy{position:absolute;left:0;right:0;bottom:0;padding-bottom:70px}
.m-hero .meta{display:flex;flex-wrap:wrap;gap:22px;color:var(--muted);margin-bottom:22px}
.m-hero .meta .st{color:var(--go)}
.m-hero h1{margin:0;font-weight:700;font-size:clamp(40px,5.8vw,92px);line-height:1.04;max-width:1100px}
.m-body{display:grid;grid-template-columns:260px minmax(0,1fr);gap:0 60px;padding:100px 0 60px}
.m-body .lbl{color:var(--dim);padding-top:10px}
.m-body .blk{padding:0 0 70px}
.m-body .blk p{margin:0;font-size:clamp(20px,1.7vw,26px);line-height:1.6;max-width:880px}
.m-body .data{display:grid;grid-template-columns:auto 1fr;gap:40px;align-items:end;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:34px 0}
.m-body .data b{font-weight:700;font-size:clamp(64px,8vw,128px);line-height:.9;color:var(--c)}
.m-body .data .lab{font-size:20px;letter-spacing:.06em;text-transform:uppercase}
.m-body .data .fact{grid-column:1/-1;color:var(--muted);font-size:18px;line-height:1.65}
.m-body .data a{color:var(--text);border-bottom:1px solid var(--line-2)}
.m-body .data a:hover{border-color:var(--text)}
.m-body .project{border:1px solid var(--line-2);padding:30px 32px;position:relative}
.m-body .project::before{content:"";position:absolute;left:-1px;top:-1px;width:40px;height:3px;background:var(--signal)}
.m-body .project p{font-size:22px}
.m-body .specs{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line)}
.m-body .specs div{padding:22px 24px;border-right:1px solid var(--line)}
.m-body .specs div:last-child{border-right:0}
.m-body .specs .mono{color:var(--dim)}
.m-body .specs b{display:block;font-size:22px;margin-top:6px}
.credit{color:var(--dim);font-size:13px}
.credit a{border-bottom:1px solid var(--line)}
.pager{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line)}
.pager a{padding:40px 0;display:block}
.pager a+a{text-align:right;border-left:1px solid var(--line);padding-left:40px}
.pager .mono{color:var(--dim)}
.pager b{display:block;font-size:24px;margin-top:8px}
.pager a:hover b{color:var(--signal)}
.dock{position:fixed;left:0;right:0;bottom:0;z-index:35;background:rgba(0,0,0,.9);backdrop-filter:blur(12px);border-top:1px solid var(--line);transform:translateY(100%);transition:transform .35s}
.dock.on{transform:none}
.dock .wrap{display:flex;justify-content:space-between;align-items:center;height:76px;gap:20px}
.dock .t{font-weight:700;font-size:18px}
.dock .s{color:var(--muted);font-size:14px}
.dock .btn{height:44px;padding:0 22px;font-size:13px}

/* propose page */
.p-hero{padding:170px 0 70px;border-bottom:1px solid var(--line)}
.p-hero h1{margin:14px 0 0;font-weight:700;font-size:clamp(44px,6vw,96px);line-height:1.02}
.p-hero p{color:var(--muted);font-size:20px;max-width:720px;margin:24px 0 0}
.p-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.3fr);gap:0;border-bottom:1px solid var(--line)}
.p-grid .side{padding:50px 50px 50px 0;border-right:1px solid var(--line)}
.p-grid .side h3{margin:0 0 20px;font-size:22px}
.p-grid ol{list-style:none;margin:0;padding:0;counter-reset:s}
.p-grid li{counter-increment:s;padding:16px 0 16px 46px;border-bottom:1px dashed var(--line);position:relative}
.p-grid li::before{content:"0" counter(s);position:absolute;left:0;top:18px;font-family:var(--mono);font-size:12px;color:var(--signal)}
.p-grid li b{display:block;font-size:18px}
.p-grid li span{color:var(--muted);font-size:15px}
.p-grid .ex{margin-top:26px;border-left:2px solid var(--signal);padding:4px 0 4px 18px;color:var(--muted)}
.p-grid .ex .mono{display:block;color:var(--dim);margin-bottom:6px}
.p-grid .safe{margin-top:26px;color:var(--dim);font-size:14px}
.p-grid .form{padding:50px 0 50px 50px}
.p-grid .frame{border:1px solid var(--line-2);background:#fff}
.p-grid iframe{display:block;width:100%;height:860px;border:0}
.p-grid .open{margin-top:14px;color:var(--dim);font-size:14px}
.p-grid .open a{color:var(--text);border-bottom:1px solid var(--line-2)}

/* reveal */
.rv{opacity:0;transform:translateY(24px);transition:opacity .9s ease,transform .9s ease}
.rv.in{opacity:1;transform:none}

@media (max-width:1100px){
  .head-row{display:none}
  .row{grid-template-columns:70px minmax(0,1fr) auto 24px;gap:16px}
  .row .area,.row .lv,.row .st{display:none}
  .row .num{font-size:24px}
  .check,.p-grid{grid-template-columns:1fr}
  .check .col+.col,.p-grid .form{border-left:0;padding-left:0}
  .p-grid .side{border-right:0;padding-right:0}
  .m-body{grid-template-columns:1fr}
  .m-body .lbl{padding:0 0 12px}
  .telemetry{grid-template-columns:1fr 1fr}
  .telemetry div:nth-child(3){padding-left:0}
  .telemetry div{padding-bottom:24px}
}
@media (max-width:700px){
  .wrap{padding:0 20px}
  .nav{gap:16px}
  .nav a.hide-sm,.brand small{display:none}
  .controls{flex-direction:column;align-items:stretch;position:static}
  .find{min-width:0}
  .row{grid-template-columns:minmax(0,1fr) auto}
  .row .id,.row .go-ar{display:none}
  .row h3{font-size:19px}
  .why3,.thresh,.m-body .specs{grid-template-columns:1fr}
  .thresh div,.m-body .specs div{border-right:0;border-bottom:1px solid var(--line)}
  .hero .dots{right:20px;bottom:40px}
  .hero .copy{padding-bottom:110px}
  .dock .s{display:none}
  .pager{grid-template-columns:1fr}
  .pager a+a{border-left:0;padding-left:0;text-align:left;border-top:1px solid var(--line)}
}
@media (prefers-reduced-motion:reduce){
  .hero .slide,.hero .slide .ph,.rv{transition:none}
  .rv{opacity:1;transform:none}
}