@font-face{font-family:"Smiley Sans";src:url("assets/fonts/smiley-sans-display.woff2") format("woff2");font-display:swap}
:root{--ink:#091b12;--ink-2:#102b1d;--paper:#f1f5e8;--paper-2:#dce4d7;--lime:#b9e769;--steel:#aebbb1;--white:#fff;--line:rgba(185,231,105,.38);--focus:#efff70;--display:"Smiley Sans","Microsoft YaHei",sans-serif;--body:"Microsoft YaHei","PingFang SC",sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--ink);color:var(--paper);font-family:var(--body);font-size:16px;line-height:1.65;overflow-x:hidden}
body.menu-open{overflow:hidden}
::selection{background:var(--lime);color:var(--ink)}
::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-track{background:var(--ink)}
::-webkit-scrollbar-thumb{background:var(--lime);border:3px solid var(--ink)}
a{color:inherit;text-decoration-thickness:1px;text-underline-offset:.28em}
button,input,textarea{font:inherit}
button,a{cursor:pointer}
img{display:block;max-width:100%}
:focus-visible{outline:3px solid var(--focus);outline-offset:4px}
.skip-link{position:fixed;left:16px;top:-80px;z-index:1000;background:var(--lime);color:var(--ink);padding:12px 18px;font-weight:700}
.skip-link:focus{top:16px}
.site-header{position:fixed;inset:0 0 auto;z-index:100;display:flex;align-items:center;justify-content:space-between;min-height:78px;padding:0 clamp(20px,4vw,64px);border-bottom:1px solid rgba(241,245,232,.22);background:rgba(9,27,18,.9);backdrop-filter:blur(14px)}
.brand{display:flex;align-items:center;gap:12px;min-height:44px;text-decoration:none}
.brand-mark{width:42px;height:34px;fill:none;stroke:var(--lime);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.brand span{display:flex;flex-direction:column;line-height:1.05}
.brand strong{font-family:var(--display);font-size:18px;letter-spacing:.03em}
.brand small{margin-top:6px;font-size:9px;letter-spacing:.18em;color:var(--steel)}
.site-nav{display:flex;align-items:center;gap:clamp(18px,2.6vw,42px);font-size:14px}
.site-nav a{display:flex;align-items:center;min-height:44px;text-decoration:none;transition:color .2s ease}
.site-nav a:hover{color:var(--lime)}
.site-nav .nav-cta{display:flex;align-items:center;min-height:44px;padding:0 20px;background:var(--lime);color:var(--ink);font-weight:700;clip-path:polygon(10px 0,100% 0,100% 100%,10px 100%,0 50%)}
.menu-button{display:none;border:0;background:none;width:48px;height:48px;padding:12px}
.menu-button span{display:block;height:2px;background:var(--paper);margin:7px 0;transition:transform .25s ease}
.hero{position:relative;min-height:100svh;padding-top:78px;background:var(--ink);overflow:hidden}
.hero-copy{position:relative;z-index:3;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(260px,.9fr);gap:36px;align-items:end;padding:clamp(52px,8vh,90px) clamp(20px,4vw,64px) 30px}
.hero h1,.section-heading h2,.path-title h2,.quality-copy h2,.timeline-copy h2,.contact-lead h2{font-family:var(--display);font-weight:700;letter-spacing:-.035em;line-height:.94;margin:0;text-wrap:balance}
.hero h1{font-size:clamp(3.6rem,8vw,6rem)}
.hero-statement{margin:0 0 4px;font-size:clamp(1.1rem,2vw,1.65rem);line-height:1.35;color:var(--steel)}
.hero-statement strong{display:inline-block;margin-top:6px;color:var(--lime);font-weight:700}
.hero-visual{position:relative;height:clamp(420px,55vh,650px);overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.hero-visual img{width:100%;height:100%;object-fit:cover;object-position:center 58%}
.hero-visual::before,.hero-visual::after{content:"";position:absolute;z-index:2;left:0;right:0;height:1px;background:var(--line)}
.hero-visual::before{top:35%}.hero-visual::after{bottom:22%}
.scan-beam{position:absolute;z-index:4;left:-10%;top:0;width:2px;height:100%;background:var(--lime);box-shadow:0 0 36px 12px rgba(185,231,105,.36);opacity:0}
.hero-visual.scanned .scan-beam{animation:scan-once 1.65s cubic-bezier(.16,1,.3,1) both}
@keyframes scan-once{0%{left:-10%;opacity:0}10%{opacity:1}90%{opacity:1}100%{left:108%;opacity:0}}
.scan-cta{position:absolute;z-index:5;right:clamp(20px,5vw,72px);bottom:clamp(26px,5vw,62px);display:flex;align-items:center;justify-content:space-between;gap:38px;width:min(320px,calc(100% - 40px));min-height:74px;padding:0 28px 0 34px;background:var(--lime);color:var(--ink);font-weight:700;text-decoration:none;clip-path:polygon(18px 0,100% 0,100% 100%,18px 100%,0 50%)}
.scan-cta svg,.contact-form button svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s ease}
.scan-cta:hover svg,.contact-form button:hover svg{transform:translateX(5px)}
.hero-facts{display:grid;grid-template-columns:repeat(4,1fr);margin:0;padding:20px clamp(20px,4vw,64px) 26px;background:var(--ink);border-bottom:1px solid var(--line)}
.hero-facts div{padding:4px 24px;border-left:1px solid var(--line)}
.hero-facts div:first-child{padding-left:0;border-left:0}
.hero-facts dt{font-size:12px;color:var(--steel)}
.hero-facts dd{margin:4px 0 0;font-family:var(--display);font-size:clamp(1rem,1.5vw,1.35rem)}
.project-intro{background:var(--paper);color:var(--ink);padding:clamp(90px,12vw,170px) clamp(20px,4vw,64px)}
.section-heading{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(260px,.55fr);gap:clamp(40px,8vw,120px);align-items:end;margin-bottom:clamp(54px,8vw,100px)}
.section-heading h2,.path-title h2,.quality-copy h2,.timeline-copy h2,.contact-lead h2{font-size:clamp(3rem,6.5vw,6rem)}
.section-heading p,.path-title p,.quality-copy>p,.timeline-copy>p,.contact-lead>p{max-width:62ch;margin:0;color:#355043}
.atlas-figure{margin:0}
.atlas-figure img{width:100%;height:min(65vw,720px);object-fit:cover}
.atlas-figure figcaption{display:flex;justify-content:flex-end;padding-top:14px;border-top:1px solid #92a193;font-size:13px;color:#476052}
.path-section{background:var(--ink);padding:clamp(90px,12vw,170px) 0}
.path-title{display:grid;grid-template-columns:1fr minmax(260px,.5fr);gap:50px;align-items:end;padding:0 clamp(20px,4vw,64px) clamp(60px,8vw,110px)}
.path-title p{color:var(--steel)}
.path-track{border-top:1px solid var(--line)}
.path-track article{display:grid;grid-template-columns:minmax(290px,.7fr) minmax(0,1.3fr);min-height:610px;border-bottom:1px solid var(--line)}
.path-track article:nth-child(even){grid-template-columns:minmax(0,1.3fr) minmax(290px,.7fr)}
.path-track article:nth-child(even) .path-copy{order:2}
.path-copy{display:flex;flex-direction:column;justify-content:flex-end;padding:clamp(34px,5vw,78px)}
.path-copy h3{font-family:var(--display);font-size:clamp(2.4rem,4.7vw,5rem);line-height:1;margin:0 0 24px;letter-spacing:-.03em}
.path-copy p{max-width:44ch;margin:0;color:var(--steel)}
.path-track img{width:100%;height:100%;min-height:610px;object-fit:cover}
.quality-section{display:grid;grid-template-columns:minmax(0,1.18fr) minmax(360px,.82fr);background:var(--paper);color:var(--ink)}
.quality-visual img{width:100%;height:100%;min-height:900px;object-fit:cover}
.quality-copy{padding:clamp(70px,8vw,130px) clamp(30px,6vw,90px);display:flex;flex-direction:column;justify-content:center}
.quality-copy h2{margin-bottom:34px}
.question-lines{margin:64px 0 0;border-top:1px solid #809183}
.question-lines div{display:grid;grid-template-columns:130px 1fr;gap:24px;padding:20px 0;border-bottom:1px solid #aab6ac}
.question-lines dt{font-weight:700}.question-lines dd{margin:0;color:#496052}
.timeline-section{display:grid;grid-template-columns:minmax(380px,.8fr) minmax(0,1.2fr);min-height:900px;background:var(--lime);color:var(--ink)}
.timeline-copy{padding:clamp(70px,8vw,130px) clamp(30px,6vw,92px);display:flex;flex-direction:column;justify-content:center}
.timeline-copy>p{margin-top:36px;color:#243b2c}
.timeline-points{display:grid;grid-template-columns:1fr 1fr;margin-top:60px;border-top:1px solid var(--ink);border-bottom:1px solid var(--ink)}
.timeline-points div{padding:28px 0}.timeline-points div+div{padding-left:28px;border-left:1px solid var(--ink)}
.timeline-points time{display:block;font-family:var(--display);font-size:clamp(2rem,4vw,4rem);line-height:1}.timeline-points span{display:block;margin-top:10px}
.source-note{display:flex;align-items:center;min-height:56px;margin:34px 0 0;font-size:13px;font-weight:700;border-bottom:1px solid var(--ink)}
.timeline-section>img{width:100%;height:100%;min-height:900px;object-fit:cover}
.closing-strip{position:relative;height:220px;overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:linear-gradient(90deg,var(--ink) 0 18%,var(--ink-2) 18% 42%,var(--lime) 42% 58%,var(--paper-2) 58% 76%,var(--ink) 76%)}
.closing-strip::before,.closing-strip::after{content:"";position:absolute;left:0;right:0;height:1px;background:rgba(255,255,255,.5)}
.closing-strip::before{top:38%}.closing-strip::after{bottom:31%}
.closing-strip span{position:absolute;inset:0;background:linear-gradient(90deg,transparent 0 5%,rgba(255,255,255,.25) 5% 5.15%,transparent 5.15% 12%,rgba(255,255,255,.25) 12% 12.15%,transparent 12.15% 100%)}
.contact-section{display:grid;grid-template-columns:minmax(360px,.8fr) minmax(0,1.2fr);gap:clamp(60px,10vw,160px);padding:clamp(90px,12vw,170px) clamp(20px,4vw,64px);background:var(--paper);color:var(--ink)}
.contact-lead>p{margin-top:36px}
.contact-form{display:grid;grid-template-columns:1fr 1fr;gap:30px 24px;align-content:start}
.contact-form label{display:flex;flex-direction:column;gap:9px;font-weight:700}
.contact-form input,.contact-form textarea{width:100%;border:0;border-bottom:1px solid #66806e;border-radius:0;background:transparent;color:var(--ink);padding:12px 2px;min-height:48px;outline:none}
.contact-form input:focus,.contact-form textarea:focus{border-bottom-color:var(--ink);box-shadow:0 2px 0 var(--ink)}
.contact-form input:focus-visible,.contact-form textarea:focus-visible{outline:3px solid var(--ink);outline-offset:4px}
.contact-form .message-field{grid-column:1/-1}
.contact-form button{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;min-height:70px;margin-top:10px;border:0;background:var(--ink);color:var(--lime);padding:0 28px;font-weight:700}
.form-status{grid-column:1/-1;min-height:26px;margin:0;color:#284132;font-weight:700}
.site-footer{display:grid;grid-template-columns:1.3fr 1fr 1fr auto;gap:28px;align-items:center;padding:36px clamp(20px,4vw,64px);background:var(--ink);border-top:1px solid var(--line);font-size:13px;color:var(--steel)}
.footer-brand{display:flex;align-items:center;gap:14px;color:var(--paper);font-family:var(--display);font-size:18px}
.site-footer p{margin:0}.site-footer a{min-height:44px;display:flex;align-items:center}
.visual-note{white-space:nowrap}
@media (max-width:980px){
  .site-nav{gap:18px}.site-nav a:not(.nav-cta){display:none}
  .hero-copy,.section-heading,.path-title{grid-template-columns:1fr}.hero-copy{align-items:start}
  .hero-facts{grid-template-columns:1fr 1fr;gap:18px 0}.hero-facts div:nth-child(3){padding-left:0;border-left:0}
  .path-track article,.path-track article:nth-child(even){grid-template-columns:1fr;min-height:0}.path-track article:nth-child(even) .path-copy{order:0}
  .path-track img{min-height:560px}.quality-section,.timeline-section,.contact-section{grid-template-columns:1fr}.quality-visual img,.timeline-section>img{min-height:680px}.timeline-section>img{order:-1}
  .site-footer{grid-template-columns:1fr 1fr}.visual-note{white-space:normal}
}
@media (max-width:680px){
  .site-header{min-height:68px;padding:0 16px}.brand-mark{width:35px}.brand small{display:none}
  .menu-button{display:block}.site-nav{position:fixed;inset:68px 0 auto;display:flex;flex-direction:column;align-items:stretch;gap:0;padding:20px;background:var(--ink);border-bottom:1px solid var(--line);transform:translateY(-130%);visibility:hidden;transition:transform .3s cubic-bezier(.16,1,.3,1),visibility 0s .3s}
  .site-nav.open{transform:none;visibility:visible;transition-delay:0s}.site-nav a:not(.nav-cta){display:flex;align-items:center;min-height:54px;border-bottom:1px solid var(--line)}.site-nav .nav-cta{margin-top:16px;justify-content:center}
  .menu-button[aria-expanded="true"] span:first-child{transform:translateY(4.5px) rotate(45deg)}.menu-button[aria-expanded="true"] span:last-child{transform:translateY(-4.5px) rotate(-45deg)}
  .hero{padding-top:68px}.hero-copy{padding:46px 18px 24px;gap:28px}.hero h1{font-size:clamp(3.25rem,15vw,4.6rem)}.hero-statement{font-size:1.05rem}
  .hero-visual{height:520px}.hero-visual img{object-position:62% center}.scan-cta{right:18px;bottom:22px;min-height:64px}
  .hero-facts{grid-template-columns:1fr;padding:18px}.hero-facts div,.hero-facts div:nth-child(3){padding:14px 0;border-left:0;border-top:1px solid var(--line)}.hero-facts div:first-child{border-top:0}
  .project-intro,.path-section,.contact-section{padding-top:86px;padding-bottom:86px}.section-heading h2,.path-title h2,.quality-copy h2,.timeline-copy h2,.contact-lead h2{font-size:clamp(2.8rem,13vw,4.4rem)}
  .section-heading{margin-bottom:48px}.atlas-figure img{height:520px;object-position:center}
  .path-title{padding:0 18px 54px}.path-track article{display:flex;flex-direction:column}.path-copy,.path-track article:nth-child(even) .path-copy{order:0;padding:54px 18px 36px}.path-track img{order:1;min-height:0;height:520px}.path-copy h3{font-size:3.5rem}
  .quality-visual img,.timeline-section>img{min-height:0;height:540px}.quality-copy,.timeline-copy{padding:78px 18px}.question-lines{margin-top:42px}.question-lines div{grid-template-columns:1fr;gap:6px}
  .timeline-points{grid-template-columns:1fr}.timeline-points div+div{padding-left:0;border-left:0;border-top:1px solid var(--ink)}
  .closing-strip{height:150px}.contact-section{gap:54px;padding-left:18px;padding-right:18px}.contact-form{grid-template-columns:1fr}.contact-form .message-field,.contact-form button,.form-status{grid-column:1}
  .site-footer{grid-template-columns:1fr;padding:34px 18px}.site-footer a{justify-self:start}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}.scan-beam{display:none}}