:root {
  --yellow: #ffe600;
  --ink: #0a0a0a;
  --paper: #f2ede2;
  --red: #ff2d2d;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; min-height: 100%; background: var(--paper); color: var(--ink); font-family: "Archivo", Arial, sans-serif; }
a { color: inherit; }
.i-zh { display: none; }
html[lang="zh"] .i-en { display: none; }
html[lang="zh"] .i-zh { display: inline; }

.eco-hero { padding: 64px 32px 56px; background: var(--yellow); border-bottom: 3px solid var(--ink); }
.eco-kicker { display: flex; justify-content: space-between; gap: 16px; padding-bottom: 12px; border-bottom: 2px solid var(--ink); font: 700 11px/1.3 "JetBrains Mono", monospace; letter-spacing: .15em; text-transform: uppercase; }
.eco-hero h1 { max-width: 1200px; margin: 34px 0 20px; font-size: clamp(72px, 13vw, 190px); line-height: .78; letter-spacing: -.065em; font-style: italic; transform:translateY(36px) skewX(-5deg); opacity:0; transition:transform 720ms cubic-bezier(.2,.82,.22,1),opacity 420ms ease; }
.eco-hero p { max-width: 760px; margin: 0; font: 600 clamp(16px, 2vw, 24px)/1.45 "JetBrains Mono", monospace; transform:translateY(18px); opacity:0; transition:transform 600ms 180ms cubic-bezier(.2,.82,.22,1),opacity 400ms 180ms ease; }
.eco-kicker { transform:scaleX(.82); transform-origin:left; opacity:0; transition:transform 620ms 80ms cubic-bezier(.2,.82,.22,1),opacity 360ms 80ms ease; }
.ecosystem-ready .eco-hero h1,.ecosystem-ready .eco-hero p { transform:none; opacity:1; }
.ecosystem-ready .eco-kicker { transform:scaleX(1); opacity:1; }

.eco-content { padding: 48px 32px 96px; }
.eco-count { margin-bottom: 20px; font: 700 11px/1 "JetBrains Mono", monospace; letter-spacing: .16em; text-transform: uppercase; }
.eco-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 3px; background: var(--ink); border: 3px solid var(--ink); }
.eco-card { --mx:50%; --my:50%; min-height: 470px; position:relative; display: flex; flex-direction: column; background: var(--paper); text-decoration: none; overflow: hidden; opacity:0; transform:translateY(42px) scale(.985); transition:transform 440ms cubic-bezier(.2,.82,.22,1),opacity 320ms ease,filter 320ms ease; }
.eco-card.is-visible { opacity:1; transform:none; }
.eco-card::after { content:""; position:absolute; inset:0; z-index:3; pointer-events:none; opacity:0; background:radial-gradient(circle 180px at var(--mx) var(--my),rgba(255,255,255,.24),transparent 68%); mix-blend-mode:overlay; transition:opacity 220ms ease; }
.eco-card:hover { z-index:2; transform:translateY(-9px) scale(1.008); }
.eco-card:hover::after { opacity:1; }
.eco-grid:has(.eco-card:hover) .eco-card:not(:hover) { opacity:.62; filter:saturate(.55) contrast(.92); }
.eco-card:nth-child(4n + 2), .eco-card:nth-child(4n + 3) { background: var(--red); color: var(--paper); }
.eco-card-media { min-height: 240px; background: var(--yellow); border-bottom: 3px solid var(--ink); display: grid; place-items: center; overflow: hidden; }
.eco-card-media img { width: 100%; height: 100%; object-fit: cover; transition:transform 700ms cubic-bezier(.2,.82,.22,1),filter 320ms ease; }
.eco-card:hover .eco-card-media img { transform:scale(1.045); filter:contrast(1.06); }
.eco-card-media img.logo { width: min(48%, 230px); height: auto; object-fit: contain; }
.eco-card-placeholder { font-size: 88px; line-height: 1; font-weight: 900; font-style: italic; }
.eco-card-body { flex: 1; padding: 28px; display: flex; flex-direction: column; }
.eco-card-meta { display: flex; justify-content: space-between; gap: 16px; font: 700 10px/1 "JetBrains Mono", monospace; letter-spacing: .14em; text-transform: uppercase; }
.eco-card h2 { margin: 38px 0 12px; font-size: clamp(36px, 5vw, 72px); line-height: .9; letter-spacing: -.045em; transition:transform 420ms cubic-bezier(.2,.82,.22,1); }
.eco-card:hover h2 { transform:translateX(8px); }
.eco-card p { margin: 0; max-width: 52ch; font-size: 16px; line-height: 1.45; }
.eco-card-cta { margin-top: auto; padding-top: 24px; font: 700 12px/1 "JetBrains Mono", monospace; letter-spacing: .12em; text-transform: uppercase; transition:letter-spacing 260ms ease,transform 260ms ease; }
.eco-card:hover .eco-card-cta { letter-spacing:.18em; transform:translateX(8px); }

.eco-empty { min-height: 420px; padding: 48px; border: 3px solid var(--ink); background: var(--red); color: var(--paper); display: flex; flex-direction: column; justify-content: flex-end; }
.eco-empty b { font-size: clamp(64px, 12vw, 180px); line-height: .8; letter-spacing: -.06em; font-style: italic; }
.eco-empty p { max-width: 680px; margin: 28px 0 0; font: 700 14px/1.6 "JetBrains Mono", monospace; }

.project-shell { min-height: calc(100dvh - var(--site-nav-height) - var(--site-ticker-height)); display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(360px, .9fr); padding:0; border-bottom:3px solid var(--ink); }
.project-visual { min-height: 620px; background: var(--yellow); border-right: 3px solid var(--ink); display: grid; place-items: center; overflow: hidden; }
.project-visual img { width: 100%; height: 100%; object-fit: cover; }
.project-visual img.logo { width: min(55%, 420px); height: auto; object-fit: contain; }
.project-copy { padding: 54px 40px 70px; background: var(--paper); }
.project-copy .category { font: 700 11px/1 "JetBrains Mono", monospace; letter-spacing: .16em; text-transform: uppercase; }
.project-copy h1 { margin: 70px 0 18px; font-size: clamp(58px, 8vw, 120px); line-height: .82; letter-spacing: -.06em; font-style: italic; }
.project-tagline { margin: 0 0 42px; font-size: 24px; line-height: 1.3; }
.project-description { white-space: pre-wrap; font-size: 17px; line-height: 1.75; font-weight: 500; }
.project-website { display: inline-flex; margin-top: 40px; padding: 17px 20px; background: var(--ink); color: var(--paper); border: 3px solid var(--ink); text-decoration: none; font: 700 12px/1 "JetBrains Mono", monospace; letter-spacing: .12em; text-transform: uppercase; }
.project-website:hover { background: var(--red); }
.project-gallery { padding:54px 32px 90px; background:var(--yellow); border-bottom:3px solid var(--ink); }
.project-gallery-head { display:flex; justify-content:space-between; align-items:center; gap:20px; padding-bottom:14px; border-bottom:2px solid var(--ink); font:700 11px/1 "JetBrains Mono",monospace; letter-spacing:.16em; text-transform:uppercase; }
.project-gallery-stage { position:relative; margin-top:28px; aspect-ratio:16/9; overflow:hidden; border:3px solid var(--ink); background:var(--ink); }
.project-gallery-stage img { position:absolute; inset:0; width:100%; height:100%; object-fit:cover; opacity:0; transform:scale(1.035); transition:opacity 360ms ease,transform 640ms cubic-bezier(.2,.82,.22,1); }
.project-gallery-stage img.is-active { opacity:1; transform:scale(1); }
.project-gallery-strip { margin-top:12px; display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:3px; background:var(--ink); border:3px solid var(--ink); }
.project-gallery-thumb { position:relative; aspect-ratio:16/9; padding:0; overflow:hidden; border:0; background:var(--paper); cursor:pointer; }
.project-gallery-thumb img { width:100%; height:100%; display:block; object-fit:cover; filter:saturate(.45); transition:transform 360ms ease,filter 260ms ease,opacity 260ms ease; }
.project-gallery-thumb::after { content:attr(data-index); position:absolute; right:8px; bottom:7px; padding:4px 6px; background:var(--ink); color:var(--paper); font:700 10px/1 "JetBrains Mono",monospace; }
.project-gallery-thumb:hover img,.project-gallery-thumb.is-active img { transform:scale(1.05); filter:saturate(1); }
.project-gallery-thumb.is-active { outline:5px solid var(--red); outline-offset:-5px; }
.eco-footer { padding: 22px 28px; display: flex; justify-content: space-between; gap: 16px; background: var(--ink); color: var(--paper); font: 700 10px/1.4 "JetBrains Mono", monospace; letter-spacing: .12em; text-transform: uppercase; }

@media (max-width: 760px) {
  .eco-hero { padding: 42px 20px 38px; }
  .eco-kicker { font-size: 9px; }
  .eco-hero h1 { margin-top: 30px; font-size: clamp(52px, 16vw, 72px); }
  .eco-hero p { font-size: 14px; }
  .eco-content { padding: 30px 20px 72px; }
  .eco-grid { grid-template-columns: 1fr; }
  .eco-card { min-height: 430px; }
  .eco-empty { min-height: 390px; padding: 28px 22px; }
  .project-shell { grid-template-columns: 1fr; }
  .project-visual { min-height: 56vw; border-right: 0; border-bottom: 3px solid var(--ink); }
  .project-copy { padding: 34px 22px 60px; }
  .project-copy h1 { margin-top: 46px; }
  .project-tagline { font-size: 20px; }
  .project-gallery { padding:38px 20px 64px; }
  .project-gallery-stage { margin-top:20px; aspect-ratio:4/3; }
  .project-gallery-strip { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .eco-footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  .eco-hero h1,.eco-hero p,.eco-kicker,.eco-card { opacity:1; transform:none; transition:none; }
  .eco-card-media img,.eco-card h2,.eco-card-cta,.project-gallery-stage img { transition:none; }
}