/* Diving Black Cat — retro-futurist pixel framework.
   Full-bleed bands alternate ink and paper; content sits on a 1200px column on an 8px grid. */
:root{
  --ink:#0b0c0e; --paper:#eef0f1; --panel-dark:#16181c; --panel:#e1e4e7;
  --mute:#666d77; --mute-dark:#8f96a0; --rule:#c5cad0; --rule-dark:#2a2e35;
  --signal:#2b59ff; --signal-lite:#93a9ff;
  --f-pixel:"Silkscreen","Courier New",monospace;
  --f-body:"IBM Plex Mono",ui-monospace,"PingFang SC","Hiragino Sans GB","Noto Sans SC","Microsoft YaHei",monospace;
  --f-cn:"PingFang SC","Hiragino Sans GB","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --gutter:max(16px,env(safe-area-inset-left,0px));
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:72px}
body{margin:0;background:var(--ink);color:var(--paper);font-family:var(--f-body);font-size:15px;line-height:1.7;-webkit-font-smoothing:antialiased}
img,video,canvas{max-width:100%;display:block}
a{color:inherit}
button{font:inherit;color:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px}
h1,h2,h3{margin:0;text-wrap:balance}
p{margin:0}
.pixel{font-family:var(--f-pixel);letter-spacing:.06em;text-transform:uppercase}
html[lang="zh-CN"] h1,html[lang="zh-CN"] h2,html[lang="zh-CN"] h3:not(.pixel){font-family:var(--f-cn)}

/* progress bar + pixel cat */
.progress{position:fixed;left:0;right:0;top:env(safe-area-inset-top,0px);height:22px;z-index:60;pointer-events:none}
.progress-bar{position:absolute;left:0;top:0;height:3px;width:0;background:var(--signal)}
.progress .cat{position:absolute;top:5px;left:0;width:21px;height:18px;fill:var(--signal);shape-rendering:crispEdges}

/* nav */
.nav{position:fixed;top:env(safe-area-inset-top,0px);left:0;right:0;z-index:50;display:flex;align-items:center;gap:24px;padding:16px max(16px,env(safe-area-inset-right,0px)) 12px var(--gutter);mix-blend-mode:difference;color:#fff}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-size:13px}
.brand-cat{width:21px;height:18px;fill:currentColor;shape-rendering:crispEdges}
.nav nav{display:flex;gap:20px;margin-left:auto;font-size:13px}
.nav nav a{text-decoration:none;font-family:var(--f-pixel);text-transform:uppercase;letter-spacing:.06em}
html[lang="zh-CN"] .nav nav a{font-family:var(--f-cn);letter-spacing:.1em}
.nav nav a:hover{text-decoration:underline;text-underline-offset:4px}
.lang{border:1px solid currentColor;background:transparent;border-radius:999px;padding:2px 12px;font-size:13px;color:inherit}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:70;background:var(--ink)}

/* bands */
.band{padding-block:120px;padding-left:var(--gutter);padding-right:max(16px,env(safe-area-inset-right,0px))}
.band.dark{background:var(--ink);color:var(--paper)}
.band.light{background:var(--paper);color:var(--ink)}
.wrap{max-width:1200px;margin:0 auto}
.eyebrow{font-size:12px;color:var(--signal)}
.band.dark .eyebrow{color:var(--signal-lite)}
h2{font-size:clamp(34px,5vw,64px);line-height:1.05;letter-spacing:-.02em;margin-top:16px;font-weight:800}
.display{font-family:var(--f-pixel);font-weight:700;text-transform:uppercase;letter-spacing:0}
.lead{margin-top:24px;max-width:60ch;font-size:16px}
.band.dark .lead{color:#c9ced5}
.band.light .lead{color:#2c3038}

/* pixel edge between bands: a stepped dither row */
.edge{height:32px;background-repeat:repeat-x}
.edge.to-light{background-color:#eef0f1;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='32' height='32' shape-rendering='crispEdges'%3E%3Cpath fill='%230b0c0e' d='M0 0h32v8H0zM0 8h8v8H0zM16 8h8v8h-8zM8 16h8v8H8z'/%3E%3C/svg%3E")}
.edge.to-dark{background-color:#0b0c0e;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='32' height='32' shape-rendering='crispEdges'%3E%3Cpath fill='%23eef0f1' d='M0 0h32v8H0zM0 8h8v8H0zM16 8h8v8h-8zM8 16h8v8H8z'/%3E%3C/svg%3E")}

/* hero */
.hero{padding-top:140px}
.hero h1{font-size:clamp(44px,10vw,148px);line-height:.92;margin-top:20px}
html[lang="zh-CN"] .hero h1{font-family:var(--f-cn);font-weight:900;letter-spacing:-.02em}
.scroll{margin-top:32px;font-size:12px;color:var(--mute-dark)}

/* screens: the monitor frame used for reel, works and modal */
.screen{background:#000;padding:8px;clip-path:polygon(0 8px,8px 8px,8px 0,calc(100% - 8px) 0,calc(100% - 8px) 8px,100% 8px,100% calc(100% - 8px),calc(100% - 8px) calc(100% - 8px),calc(100% - 8px) 100%,8px 100%,8px calc(100% - 8px),0 calc(100% - 8px))}
.band.dark .screen{background:#1a1c21}
.screen-bar{display:flex;justify-content:space-between;gap:12px;font-size:10px;color:var(--mute-dark);padding:2px 6px 8px}
.screen-bar .live{color:var(--signal-lite)}
.screen-body{position:relative;aspect-ratio:16/9;overflow:hidden;background:#07080a}
.screen-body::after{content:"";position:absolute;inset:0;pointer-events:none;background:repeating-linear-gradient(0deg,rgba(0,0,0,.25) 0 1px,transparent 1px 3px)}
.screen-body video,.screen-body img,.screen-body iframe{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border:0}
.reel{margin-top:56px}
.glyphs{position:absolute;inset:0;font:700 11px/12px var(--f-body);color:#2b59ff;opacity:.5;overflow:hidden;white-space:normal;word-break:break-all;line-break:anywhere}
.screen-msg{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);background:var(--ink);color:var(--paper);padding:6px 14px;font-size:12px;white-space:nowrap}
.crt-on .screen-body{animation:crt 1s steps(20,end) both}
@keyframes crt{0%{transform:scale(.02,.004);filter:brightness(4)}35%{transform:scale(1,.004);filter:brightness(3)}100%{transform:none;filter:none}}

/* works */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-top:40px}
.filters button{border:1px solid var(--ink);background:transparent;padding:6px 14px;font-size:13px}
.filters button[aria-pressed="true"]{background:var(--ink);color:var(--paper)}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:32px}
.card{display:block;width:100%;text-align:left;border:0;padding:0;background:transparent}
.card .screen{transition:transform .2s steps(3,end)}
.card:hover .screen{transform:translate(-4px,-4px)}
.card-meta{display:flex;justify-content:space-between;gap:12px;margin-top:12px;font-size:11px;color:var(--mute)}
.card h3{font-size:18px;margin-top:4px;font-weight:700}
.card[hidden]{display:none}
.ph{position:absolute;inset:0;display:grid;place-items:center}
.ph canvas{position:absolute;inset:0;width:100%;height:100%;image-rendering:pixelated}
.ph span{position:relative;background:var(--ink);color:var(--paper);font-family:var(--f-pixel);font-size:11px;padding:4px 10px;text-transform:uppercase;letter-spacing:.06em}
html[lang="zh-CN"] .ph span{font-family:var(--f-cn);letter-spacing:.1em}

/* PawClaw */
.ips{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;margin-top:56px}
.ip-screen{position:relative;display:block;width:100%;aspect-ratio:3/4;border:0;padding:0;background:#000;clip-path:polygon(0 8px,8px 8px,8px 0,calc(100% - 8px) 0,calc(100% - 8px) 8px,100% 8px,100% calc(100% - 8px),calc(100% - 8px) calc(100% - 8px),calc(100% - 8px) 100%,8px 100%,8px calc(100% - 8px),0 calc(100% - 8px))}
.ip-screen canvas{position:absolute;inset:0;width:100%;height:100%}
.ip-state{position:absolute;left:12px;top:12px;background:var(--signal);color:#fff;font-size:11px;padding:2px 8px}
.ip-screen[aria-pressed="true"] .ip-state{background:var(--paper);color:var(--ink)}
.ip-hint{position:absolute;right:12px;bottom:12px;background:var(--ink);color:var(--paper);font-size:12px;padding:2px 8px}
.ip-info{display:grid;gap:8px;margin-top:20px}
.ip-info h3{font-size:28px}
.ip-info h3 .cn{font-family:var(--f-cn);text-transform:none;letter-spacing:0;font-weight:700}
.ip-info p{color:#c9ced5}
.ip-info a{color:var(--signal-lite);text-decoration:none;font-size:14px}
.ip-info a:hover{text-decoration:underline}

/* process */
.steps{list-style:none;padding:0;margin:56px 0 0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:1px solid var(--ink)}
.steps li{padding:24px 24px 24px 0;border-right:1px solid var(--rule);min-width:0}
.steps li+li{padding-left:24px}
.steps li:last-child{border-right:0}
.step-n{display:inline-grid;place-items:center;width:40px;height:40px;background:var(--signal);color:#fff;font-size:14px}
.steps h3{font-size:20px;margin-top:20px}
.steps p{margin-top:8px;color:#2c3038;font-size:14px}

/* about + contact */
.contact-title{font-size:clamp(40px,8vw,112px);line-height:.95;margin-top:96px;color:var(--signal-lite)}
html[lang="zh-CN"] .contact-title{font-family:var(--f-cn);font-weight:900}
.contact{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin:40px 0 0}
.contact div{border-top:1px solid var(--rule-dark);padding-top:16px;min-width:0}
.contact dt{font-size:11px;color:var(--mute-dark)}
.contact dd{margin:6px 0 0;word-break:break-word}
.foot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:96px;padding-top:16px;border-top:1px solid var(--rule-dark);font-size:12px;color:var(--mute-dark)}

/* modal */
.modal{position:fixed;inset:0;z-index:80;background:rgba(5,6,8,.92);display:grid;place-items:center;padding:max(16px,env(safe-area-inset-top,0px)) max(16px,env(safe-area-inset-right,0px)) max(16px,env(safe-area-inset-bottom,0px)) var(--gutter);overflow:auto}
.modal[hidden]{display:none}
.modal-inner{width:min(1100px,100%)}
.modal-close{display:block;margin:0 0 12px auto;border:1px solid var(--paper);background:transparent;padding:4px 12px;font-size:12px}
.modal-text{margin-top:20px;display:grid;gap:8px;max-width:70ch}
.modal-text h3{font-size:28px}
.modal-text p:last-child{color:#c9ced5}

/* reveal on scroll: visible at rest, a short pixel step-in when JS adds .in */
.js .reveal{transition:transform .5s steps(5,end)}
.js .reveal:not(.in){transform:translateY(16px)}

@media (max-width:900px){
  .grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps li:nth-child(2){border-right:0}
  .steps li:nth-child(3){padding-left:0}
  .steps li:nth-child(n+3){border-top:1px solid var(--rule)}
}
@media (max-width:640px){
  .band{padding-block:80px}
  .nav{gap:12px}
  .nav nav{display:none}
  .lang{margin-left:auto}
  .grid,.ips,.contact{grid-template-columns:minmax(0,1fr)}
  .steps{grid-template-columns:minmax(0,1fr)}
  .steps li,.steps li+li{padding:20px 0;border-right:0;border-top:1px solid var(--rule)}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .crt-on .screen-body{animation:none}
  .js .reveal{transition:none;transform:none}
}