:root{
  --paper:#f3f0e8;
  --paper-2:#ebe6da;
  --paper-3:#e2dccd;
  --ink:#171812;
  --muted:#6c6d63;
  --faint:#95968b;
  --line:#d5cfc1;
  --line-dark:#bcb5a5;
  --green:#0b5c46;
  --green-2:#0e7357;
  --green-3:#dcebe3;
  --orange:#bd6430;
  --yellow:#e8c26a;
  --white:#fffdf7;
  --dark:#141712;
  --dark-2:#1c211a;
  --max:1240px;
  --serif:Georgia,"Times New Roman","Songti SC","SimSun",serif;
  --sans:"Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{
  margin:0;
  background:
    radial-gradient(1200px 500px at 82% -10%,rgba(232,194,106,.18),transparent 60%),
    radial-gradient(900px 420px at 0% 20%,rgba(11,92,70,.07),transparent 55%),
    var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit}
::selection{background:var(--yellow);color:var(--ink)}
:focus-visible{outline:2px solid var(--green-2);outline-offset:3px}
.skip-link{position:fixed;left:16px;top:-60px;z-index:100;background:var(--ink);color:var(--white);padding:10px 16px;border-radius:6px;transition:top .18s ease}
.skip-link:focus{top:16px}
[hidden]{display:none!important}

.site-header{
  position:sticky;top:0;z-index:40;
  display:flex;align-items:center;gap:28px;
  max-width:calc(var(--max) + 64px);margin:0 auto;
  padding:15px 32px;
  background:rgba(243,240,232,.9);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(213,207,193,.65);
}
.brand{display:inline-flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
  display:grid;place-items:center;width:34px;height:34px;border-radius:8px;
  background:var(--green);color:var(--white);
  font-family:var(--sans);font-weight:800;font-size:19px;letter-spacing:-.05em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.18;font-weight:750;letter-spacing:-.02em;font-size:15px}
.brand-text small{font-size:9px;letter-spacing:.16em;color:var(--muted);font-weight:600;margin-top:3px}
.site-nav{display:flex;align-items:center;gap:26px;margin-left:auto}
.site-nav a{font-size:13px;color:var(--muted);letter-spacing:.03em;position:relative;padding:4px 0}
.site-nav a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:1px;background:var(--green);transition:right .2s ease}
.site-nav a:hover{color:var(--ink)}
.site-nav a:hover::after{right:0}
.site-nav a.is-active{color:var(--ink)}
.site-nav a.is-active::after{right:0}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:44px;padding:0 18px;border:1px solid transparent;border-radius:5px;
  font-size:13.5px;font-weight:650;letter-spacing:.01em;line-height:1;
  transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn span{font-size:15px;transform:translateY(-1px)}
.btn:hover{transform:translateY(-1px)}
.btn-solid{background:var(--green);color:var(--white)}
.btn-solid:hover{background:var(--green-2)}
.btn-line{border-color:var(--line-dark);color:var(--ink);background:transparent}
.btn-line:hover{background:var(--white);border-color:var(--ink)}
.btn-ghost{border-color:var(--line-dark);color:var(--ink);background:rgba(255,253,247,.5)}
.btn-ghost:hover{background:var(--white)}
.btn-small{min-height:38px;padding:0 14px;font-size:12px}

.hero{
  display:grid;grid-template-columns:minmax(0,1.02fr) minmax(420px,1.12fr);
  align-items:center;gap:54px;
  max-width:var(--max);margin:0 auto;
  padding:72px 32px 66px;
}
.hero-copy{animation:rise .7s ease both}
.kicker{display:flex;align-items:center;gap:9px;margin:0 0 24px;font-size:11px;letter-spacing:.16em;color:var(--muted);text-transform:uppercase;font-weight:650}
.pulse{width:7px;height:7px;border-radius:50%;background:var(--green-2);box-shadow:0 0 0 4px rgba(14,115,87,.12)}
.hero h1{
  margin:0;
  font-size:clamp(38px,4.45vw,62px);
  line-height:1.07;
  letter-spacing:-.055em;
  font-weight:800;
}
.hero h1 span{display:block}
.hero h1 .accent{color:var(--green);letter-spacing:-.06em}
.lede{max-width:590px;margin:28px 0 0;font-size:17.5px;line-height:1.85;color:#3d3e36}
.lede-small{margin-top:12px;font-size:14.5px;color:var(--muted);line-height:1.75}
.hero-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:31px}
.hero-meta{display:grid;grid-template-columns:1fr;gap:0;margin:38px 0 0;padding:0;max-width:590px;border-top:1px solid var(--line)}
.hero-meta div{display:grid;grid-template-columns:72px 1fr;gap:18px;padding:10px 0;border-bottom:1px solid var(--line)}
.hero-meta dt{font-size:10px;letter-spacing:.14em;color:var(--faint);font-weight:700;text-transform:uppercase;padding-top:4px}
.hero-meta dd{margin:0;font-size:12.5px;color:#4d4e45;line-height:1.55}

.hero-visual{min-width:0;margin:0;animation:rise .8s .08s ease both}
.browser{
  overflow:hidden;border:1px solid var(--line-dark);border-radius:12px;
  background:var(--white);
  box-shadow:0 24px 60px rgba(38,34,24,.14),0 2px 0 rgba(255,255,255,.8) inset;
}
.browser-bar{display:flex;align-items:center;gap:12px;height:38px;padding:0 13px;background:#e8e3d8;border-bottom:1px solid #d5cfc1}
.browser-dots{display:flex;gap:5px;flex:0 0 auto}
.browser-dots i{display:block;width:7px;height:7px;border-radius:50%;background:#c6bfb0}
.browser-dots i:nth-child(1){background:#d98c7a}
.browser-dots i:nth-child(2){background:#dfbf6f}
.browser-dots i:nth-child(3){background:#8db29b}
.browser-url{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-align:center;font-family:var(--mono);font-size:10px;color:#77766b;background:rgba(255,253,247,.65);border:1px solid #d5cfc1;border-radius:4px;padding:3px 8px}
.browser-tag{flex:0 0 auto;font-size:9px;letter-spacing:.08em;color:#6f6c60;border:1px solid #cfc8b8;border-radius:999px;padding:2px 7px;background:rgba(255,253,247,.55)}
.browser-shot{display:block;background:#f7f5ef}
.browser-shot img{width:100%;height:auto}
.hero-visual figcaption{margin-top:11px;font-size:10.5px;line-height:1.6;color:var(--faint);letter-spacing:.01em}

.fact-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  max-width:var(--max);margin:0 auto;padding:0 32px 8px;
  border-top:1px solid var(--line);
}
.fact-strip div{display:flex;align-items:baseline;gap:11px;padding:26px 0 24px;border-right:1px solid var(--line)}
.fact-strip div:not(:first-child){padding-left:28px}
.fact-strip div:last-child{border-right:0}
.fact-strip strong{font-family:var(--serif);font-size:38px;line-height:1;font-weight:400;letter-spacing:-.04em;color:var(--green)}
.fact-strip span{font-size:11.5px;color:var(--muted);letter-spacing:.02em;line-height:1.45}

.section{max-width:var(--max);margin:0 auto;padding:100px 32px;border-top:1px solid var(--line)}
.section-head{max-width:780px}
.section-index{margin:0 0 18px;font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;color:var(--green);text-transform:uppercase;font-weight:650}
.section h2{margin:0;font-size:clamp(31px,4.2vw,54px);line-height:1.13;letter-spacing:-.045em;font-weight:800}
.section-intro{max-width:680px;margin:23px 0 0;font-size:15.5px;line-height:1.85;color:var(--muted)}
.section-head .section-intro{max-width:640px}

.problem-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:54px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.problem-card{padding:27px 28px 30px;border-right:1px solid var(--line);min-height:220px}
.problem-card:first-child{padding-left:0}
.problem-card:last-child{border-right:0;padding-right:0}
.card-no{display:block;font-family:var(--mono);font-size:10px;letter-spacing:.1em;color:var(--orange);margin-bottom:24px}
.problem-card h3{margin:0 0 13px;font-size:20px;letter-spacing:-.025em;font-weight:750}
.problem-card p{margin:0;font-size:14px;line-height:1.8;color:var(--muted)}
.pullquote{display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:end;margin:56px 0 0;padding:0 0 0 26px;border-left:3px solid var(--green)}
.pullquote p{margin:0;font-family:var(--serif);font-size:clamp(25px,3vw,38px);line-height:1.28;letter-spacing:-.035em;color:var(--ink)}
.pullquote span{font-size:12.5px;line-height:1.7;color:var(--muted);padding-bottom:4px}

.section-dark{
  max-width:none;width:100%;
  background:
    radial-gradient(900px 460px at 88% 0%,rgba(232,194,106,.1),transparent 60%),
    var(--dark);
  color:var(--paper);border-top:0;
  padding-left:max(32px,calc((100vw - var(--max))/2 + 32px));
  padding-right:max(32px,calc((100vw - var(--max))/2 + 32px));
}
.section-dark .section-index{color:var(--yellow)}
.section-dark h2{color:var(--paper)}
.section-dark .section-intro{color:#a9aa9c}
.work-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-top:40px}
.tab{
  appearance:none;border:1px solid rgba(255,255,255,.2);background:transparent;color:#c8c8ba;
  border-radius:4px;padding:10px 13px;font-size:12px;letter-spacing:.01em;cursor:pointer;
  transition:background .18s,color .18s,border-color .18s;
}
.tab span{font-family:var(--mono);font-size:9px;color:#858778;margin-left:5px}
.tab:hover{border-color:rgba(255,255,255,.48);color:var(--paper)}
.tab.is-active{background:var(--paper);border-color:var(--paper);color:var(--ink)}
.tab.is-active span{color:var(--green)}
.work-stage{margin-top:22px}
.panel{margin:0;animation:fadeIn .32s ease both}
.browser-dark{border-color:#3e443a;box-shadow:0 24px 70px rgba(0,0,0,.36)}
.browser-dark .browser-bar{background:#272c24;border-bottom-color:#3b4137}
.browser-dark .browser-url{background:rgba(0,0,0,.22);border-color:#444a3f;color:#a8aa9c}
.browser-dark .browser-tag{background:rgba(0,0,0,.18);border-color:#474d42;color:#a8aa9c}
.browser-dark .browser-dots i{background:#4a5045}
.browser-dark .browser-dots i:nth-child(1){background:#9d6658}
.browser-dark .browser-dots i:nth-child(2){background:#a88f50}
.browser-dark .browser-dots i:nth-child(3){background:#668876}
.panel figcaption{display:flex;gap:10px;max-width:860px;margin:16px 0 0;font-size:12px;line-height:1.7;color:#a7a89a}
.panel figcaption strong{color:var(--paper);flex:0 0 auto;font-weight:700}

.mobile-row{display:grid;grid-template-columns:minmax(0,1fr) 292px;align-items:center;gap:60px;margin-top:72px;padding-top:52px;border-top:1px solid rgba(255,255,255,.15)}
.mobile-copy .section-index{margin-bottom:14px}
.mobile-copy h3{margin:0;font-size:clamp(25px,3vw,36px);line-height:1.2;letter-spacing:-.035em;font-weight:750;color:var(--paper)}
.mobile-copy p:last-child{max-width:490px;margin:17px 0 0;font-size:13.5px;line-height:1.8;color:#a7a89a}
.phone{justify-self:center;margin:0;padding:13px 10px 12px;border:1px solid #444a3f;border-radius:28px;background:#232820;box-shadow:0 26px 60px rgba(0,0,0,.35);position:relative}
.phone-notch{position:absolute;top:7px;left:50%;transform:translateX(-50%);width:74px;height:5px;border-radius:99px;background:#11140f;z-index:1}
.phone a{display:block;overflow:hidden;border-radius:19px;background:#f3f0e8;max-height:620px}
.phone img{width:100%;height:auto}

.pipeline{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:54px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.step{padding:28px 27px 32px;border-right:1px solid var(--line)}
.step:first-child{padding-left:0}
.step:last-child{border-right:0;padding-right:0}
.step-top{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:28px}
.step-top>span:first-child{font-family:var(--serif);font-size:32px;color:var(--green);line-height:1}
.step-tag{font-family:var(--mono);font-size:9px;letter-spacing:.12em;color:var(--faint);border:1px solid var(--line);padding:2px 6px;border-radius:3px}
.step h3{margin:0 0 13px;font-size:21px;letter-spacing:-.025em;font-weight:750}
.step p{margin:0;font-size:13.5px;line-height:1.8;color:var(--muted)}
.step ul{margin:20px 0 0;padding:0;list-style:none;border-top:1px solid var(--line)}
.step li{position:relative;padding:9px 0 9px 15px;border-bottom:1px solid var(--line);font-size:11.5px;line-height:1.55;color:#55564c}
.step li::before{content:"";position:absolute;left:0;top:16px;width:4px;height:4px;background:var(--green-2);border-radius:50%}
.step li:last-child{border-bottom:0}

.system-map{display:flex;align-items:stretch;gap:0;margin-top:44px;padding:18px;border:1px solid var(--line);background:rgba(255,253,247,.5)}
.map-node{flex:1;min-width:0;padding:14px 12px;border:1px solid var(--line);background:var(--paper)}
.map-node small{display:block;font-family:var(--mono);font-size:8.5px;letter-spacing:.1em;color:var(--faint);margin-bottom:7px;text-transform:uppercase}
.map-node strong{display:block;font-size:12px;line-height:1.45;font-weight:700;letter-spacing:-.01em;overflow-wrap:anywhere}
.map-node-accent{background:var(--green);border-color:var(--green);color:var(--white)}
.map-node-accent small{color:#9fc4b6}
.map-arrow{display:grid;place-items:center;flex:0 0 26px;color:var(--faint);font-family:var(--mono);font-size:13px}

.section-paper{max-width:none;width:100%;background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding-left:max(32px,calc((100vw - var(--max))/2 + 32px));padding-right:max(32px,calc((100vw - var(--max))/2 + 32px))}
.engineering-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(290px,.65fr);gap:52px;align-items:start;margin-top:50px}
.module-list{border-top:1px solid var(--line-dark)}
.module{display:grid;grid-template-columns:210px 1fr;gap:22px;align-items:baseline;padding:17px 0;border-bottom:1px solid var(--line-dark)}
.module code{font-family:var(--mono);font-size:11px;color:var(--green);letter-spacing:-.02em;white-space:nowrap}
.module span{font-size:12.8px;line-height:1.7;color:#525349}
.engineering-note{padding:25px 25px 23px;background:var(--green);color:var(--white);border-radius:6px;box-shadow:0 18px 40px rgba(11,92,70,.18)}
.note-label{margin:0 0 12px;font-family:var(--mono);font-size:9px;letter-spacing:.13em;color:#a9d1c2;text-transform:uppercase}
.note-big{margin:0;font-family:var(--serif);font-size:78px;line-height:.9;letter-spacing:-.06em;font-weight:400}
.note-copy{margin:16px 0 0;font-size:12.5px;line-height:1.8;color:#dcece5}
.engineering-note hr{border:0;border-top:1px solid rgba(255,255,255,.2);margin:22px 0}
.engineering-note .note-copy{margin-top:0}

.boundary-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:50px}
.boundary-col{padding:25px 26px 22px;border:1px solid var(--line-dark);background:rgba(255,253,247,.45)}
.boundary-done{border-top:3px solid var(--green)}
.boundary-not{border-top:3px solid var(--orange);background:rgba(235,230,218,.65)}
.boundary-label{margin:0 0 18px;font-family:var(--mono);font-size:10px;letter-spacing:.13em;text-transform:uppercase;color:var(--green);font-weight:650}
.boundary-not .boundary-label{color:var(--orange)}
.boundary-col ul{margin:0;padding:0;list-style:none}
.boundary-col li{position:relative;padding:10px 0 10px 19px;border-top:1px solid var(--line);font-size:12.5px;line-height:1.7;color:#4d4e45}
.boundary-col li::before{content:"+";position:absolute;left:0;top:9px;color:var(--green);font-family:var(--mono);font-size:12px}
.boundary-not li::before{content:"−";color:var(--orange)}
.next-row{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px;align-items:start;margin-top:58px;padding-top:35px;border-top:1px solid var(--line)}
.next-row h3{margin:0;font-size:clamp(23px,2.8vw,33px);line-height:1.2;letter-spacing:-.03em;font-weight:750;max-width:370px}
.next-list{margin:0;padding:0;list-style:none;border-top:1px solid var(--line)}
.next-list li{display:flex;gap:18px;align-items:baseline;padding:12px 0;border-bottom:1px solid var(--line);font-size:13px;line-height:1.65;color:#4d4e45}
.next-list span{font-family:var(--mono);font-size:9px;color:var(--orange);flex:0 0 auto}

.closing{max-width:none;background:var(--green);color:var(--white);padding:86px max(32px,calc((100vw - var(--max))/2 + 32px)) 84px}
.closing .section-index{color:#a9d1c2;margin-bottom:18px}
.closing h2{margin:0;font-size:clamp(34px,5vw,62px);line-height:1.1;letter-spacing:-.05em;font-weight:800}
.closing-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}
.closing .btn-solid{background:var(--paper);color:var(--green)}
.closing .btn-solid:hover{background:var(--white)}
.closing .btn-line{border-color:rgba(255,255,255,.34);color:var(--white)}
.closing .btn-line:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.7)}

.site-footer{
  display:grid;grid-template-columns:1fr 1.3fr auto;gap:28px;align-items:start;
  max-width:var(--max);margin:0 auto;padding:30px 32px 40px;
  font-size:11px;line-height:1.7;color:var(--faint);
}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--ink)}
.footer-brand .brand-mark{width:30px;height:30px;font-size:16px;border-radius:7px}
.footer-brand span:last-child{display:flex;flex-direction:column;line-height:1.25}
.footer-brand strong{font-size:12px}
.footer-brand small{font-size:9px;color:var(--faint);margin-top:3px}
.site-footer p{margin:0;max-width:520px}
.footer-links{display:flex;flex-wrap:wrap;gap:16px}
.footer-links a{border-bottom:1px solid var(--line-dark);color:var(--muted);padding-bottom:2px}
.footer-links a:hover{color:var(--ink)}

@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
}

@media (max-width:1100px){
  .hero{grid-template-columns:1fr;gap:42px;padding-top:54px}
  .hero-visual{max-width:780px}
  .hero h1{font-size:clamp(44px,7.2vw,68px)}
  .site-nav{gap:18px}
  .pipeline{grid-template-columns:1fr}
  .step{border-right:0;border-bottom:1px solid var(--line);padding:24px 0}
  .step:first-child{padding-left:0}
  .step:last-child{border-bottom:0;padding-right:0}
  .step ul{margin-top:15px}
  .system-map{flex-wrap:wrap;gap:8px}
  .map-node{flex:1 1 150px}
  .map-arrow{flex:0 0 18px}
  .engineering-grid{grid-template-columns:1fr;gap:34px}
  .engineering-note{max-width:420px}
}
@media (max-width:900px){
  .site-header{gap:16px;padding:13px 22px}
  .site-nav{display:none}
  .hero{padding:46px 22px 52px}
  .fact-strip{padding-left:22px;padding-right:22px}
  .section{padding-left:22px;padding-right:22px}
  .section-dark,.section-paper{padding-left:22px;padding-right:22px}
  .problem-grid{grid-template-columns:1fr}
  .problem-card{border-right:0;border-bottom:1px solid var(--line);padding:24px 0}
  .problem-card:last-child{border-bottom:0}
  .problem-card:first-child{padding-left:0}
  .pullquote{grid-template-columns:1fr;gap:14px}
  .boundary-grid,.next-row{grid-template-columns:1fr;gap:26px}
  .mobile-row{grid-template-columns:1fr;gap:30px}
  .phone{justify-self:start}
  .site-footer{grid-template-columns:1fr;gap:18px;padding-left:22px;padding-right:22px}
  .footer-links{order:-1}
}
@media (max-width:620px){
  body{font-size:15px}
  .hero h1{font-size:clamp(36px,10.2vw,40px);letter-spacing:-.06em}
  .lede{font-size:15.5px}
  .hero-actions .btn{width:100%}
  .fact-strip{grid-template-columns:1fr 1fr}
  .fact-strip div{padding:18px 0;border-bottom:1px solid var(--line)}
  .fact-strip div:nth-child(2n){border-right:0;padding-left:18px}
  .fact-strip div:nth-child(3),.fact-strip div:nth-child(4){border-bottom:0}
  .fact-strip strong{font-size:30px}
  .fact-strip span{font-size:10.5px}
  .section{padding-top:72px;padding-bottom:72px}
  .section h2{font-size:clamp(28px,8.5vw,40px)}
  .section-intro{font-size:14px}
  .work-tabs{gap:6px}
  .tab{flex:1 1 calc(50% - 6px);text-align:left;padding:9px 10px;font-size:11px}
  .panel figcaption{display:block;font-size:11.5px}
  .panel figcaption strong{display:block;margin-bottom:3px}
  .module{grid-template-columns:1fr;gap:4px;padding:13px 0}
  .module code{white-space:normal}
  .next-list li{gap:12px}
  .closing{padding-top:64px;padding-bottom:64px}
  .closing-actions .btn{width:100%}
  .hero-meta div{grid-template-columns:62px 1fr;gap:12px}
}
@media print{
  .site-header,.site-nav,.hero-actions,.work-tabs,.mobile-row,.closing-actions,.site-footer,.skip-link{display:none!important}
  body{background:#fff;color:#000}
  .hero{display:block;padding:0 0 24px}
  .hero-visual{max-width:100%;margin-top:20px}
  .section,.section-dark,.section-paper{max-width:none;padding:24px 0;background:#fff;color:#000;border-top:1px solid #bbb}
  .section-dark h2,.section-dark .section-intro{color:#000}
  .panel{display:block!important;break-inside:avoid;margin-bottom:20px}
  .panel[hidden]{display:block!important}
  .browser{box-shadow:none}
  .fact-strip{border-top:1px solid #bbb}
  .closing{background:#fff;color:#000;padding:24px 0}
  a{text-decoration:none;color:#000}
}