:root{--bg:#161616;--panel:#262626;--line:#444;--fg:#ece8f5;--mut:#a8a8a8;--acc:#ff8a2a;--acc2:#8f7bff;--code:#1a1a1a;--u:3px;--uh:5px;color-scheme:dark}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--acc2)}a:hover{color:var(--acc)}
h1,h2,h3,.brand,.cards strong{font-family:ui-monospace,"Cascadia Code",Menlo,Consolas,monospace;line-height:1.25;letter-spacing:-.01em}
.top{display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;padding:14px 16px;max-width:980px;margin:0 auto}
.top nav{display:flex;gap:16px;flex-wrap:wrap}.top nav a{color:var(--mut);text-decoration:none}.top nav a:hover{color:var(--acc)}
.brand{display:flex;gap:10px;align-items:center;color:var(--fg);text-decoration:none;font-weight:700}
.logo{width:16px;height:16px;background:var(--acc);box-shadow:4px 4px 0 var(--acc2);image-rendering:pixelated}
main{max-width:980px;margin:0 auto;padding:8px 16px 48px}
article{max-width:760px}
h1{font-size:clamp(1.6rem,4vw,2.3rem);margin:.4em 0 .3em}h2{font-size:1.4rem;margin:2em 0 .5em;border-bottom:1px solid var(--line);padding-bottom:.3em}h3{font-size:1.1rem;margin:1.5em 0 .4em}
.lead{color:var(--mut);font-size:1.1rem}.meta,.crumb{font-size:.9rem;color:var(--mut)}.crumb a{text-decoration:none}
code{font-family:ui-monospace,"Cascadia Code",Menlo,Consolas,monospace;font-size:.9em;background:var(--code);padding:.1em .35em;border-radius:3px}
pre{background:var(--code);border:1px solid var(--line);border-radius:4px;padding:12px 14px;overflow-x:auto;line-height:1.5;margin:0}pre code{background:none;padding:0;font-size:.82rem}
details.code{position:relative;margin:1.2em 0;border:1px solid var(--line);border-radius:4px;background:var(--panel)}details.code>summary{cursor:pointer;padding:8px 12px;font-size:.9rem;color:var(--mut)}details.code pre{border:0;border-top:1px solid var(--line);max-height:520px}
.copy{position:absolute;top:6px;right:8px;font:inherit;font-size:.8rem;background:var(--bg);color:var(--fg);border:1px solid var(--line);border-radius:3px;padding:2px 8px;cursor:pointer}
table{border-collapse:collapse;width:100%;font-size:.92rem;margin:1em 0;display:block;overflow-x:auto}th,td{border:1px solid var(--line);padding:6px 10px;text-align:left;vertical-align:top}th{background:var(--panel)}
blockquote{margin:1em 0;padding:.4em 1em;border-left:4px solid var(--acc);background:var(--panel);color:var(--mut)}
.demo{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-start;margin:1.2em 0;padding:12px;background:var(--panel);border:1px solid var(--line);border-radius:4px}
.demo figure{margin:0}.demo figcaption{font-size:.8rem;color:var(--mut);margin-top:4px}.demo canvas{display:block;background:#14121c;border:1px solid var(--line)}
.ctl{display:flex;flex-wrap:wrap;gap:12px;width:100%;font-size:.88rem;color:var(--mut)}.ctl select{font:inherit;background:var(--bg);color:var(--fg);border:1px solid var(--line);border-radius:3px}
.info{font-size:.78rem;max-height:200px;margin:0}.nojs{margin:0;color:var(--mut)}.demo.live .nojs{display:none}
.hero{padding:24px 0 8px}.ai{background:var(--panel);border:1px solid var(--line);border-left:4px solid var(--acc2);border-radius:4px;padding:4px 18px 10px;margin:24px 0}.ai h2{border:0;margin-top:.8em}
.cards{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px}
.cards a{display:block;height:100%;padding:12px 14px;background:var(--panel);border:1px solid var(--line);border-radius:4px;text-decoration:none;color:var(--fg)}.cards a:hover{border-color:var(--acc)}.cards strong{display:block;margin-bottom:4px}.cards span{color:var(--mut);font-size:.9rem}
.pn{display:flex;justify-content:space-between;gap:16px;margin-top:40px;padding-top:16px;border-top:1px solid var(--line)}
footer{max-width:980px;margin:0 auto;padding:24px 16px 40px;color:var(--mut);font-size:.85rem;border-top:1px solid var(--line)}

/* ===== Pixel UI (asset: assets/ui/*, 1 px sumber = var(--u)) ===== */
@font-face{font-family:Groundhog;src:url(ui/groundhog.ttf) format("truetype");font-display:swap}
body,h1,h2,h3,.brand,.cards strong,button,select,summary,th,.crumb,.meta{font-family:Groundhog,ui-monospace,monospace}
h1,h2,h3,.brand,.cards strong{letter-spacing:0;font-weight:400}
body{font-size:20px;line-height:1.5}
code,pre,pre code{font-family:ui-monospace,"Cascadia Code",Menlo,Consolas,monospace}
.top,.top nav a,.copy,.logo,.demo canvas,.cards a,.ai,.demo,details.code,blockquote,pre,.ctl select,.ctl input{image-rendering:pixelated}
/* GUI polos: kartu, blockquote, kode, tabel */
.cards a,blockquote,details.code pre,.ctl,.info{border:0;border-radius:0;border-style:solid;border-width:calc(var(--u)*3);border-image:url(ui/gui.png) 3 fill/calc(var(--u)*3) stretch;background:none}
.cards a{padding:6px 8px}.cards a:hover{filter:brightness(1.25)}
blockquote{padding:4px 8px;color:var(--mut)}
details.code pre{border-top:0;margin:0;max-height:520px}
.ctl{padding:4px 8px;width:100%}
/* GUI + header: panel utama */
.demo,.ai,details.code{border:0;border-radius:0;border-style:solid;border-width:calc(var(--uh)*6) calc(var(--uh)*3) calc(var(--uh)*3);border-image:url(ui/gui-header.png) 6 3 3 3 fill/calc(var(--uh)*6) calc(var(--uh)*3) calc(var(--uh)*3) stretch;background:none;padding:8px 10px}
.ai{padding:0 14px 8px}details.code{padding:0;position:relative}details.code>summary{padding:0 10px;font-size:.95rem;color:#fff;margin-top:calc(var(--uh)*-5.5);height:calc(var(--uh)*5);line-height:calc(var(--uh)*5);cursor:pointer}
.demo canvas{border:var(--u) solid #000}
/* tombol */
.copy,.top nav a,.pn a{display:inline-block;border:0;border-style:solid;border-width:var(--u) var(--u) calc(var(--u)*2);border-image:url(ui/button.png) 1 1 2 1 fill/var(--u) var(--u) calc(var(--u)*2) var(--u) stretch;background:none;color:#fff;padding:2px 10px;text-decoration:none;cursor:pointer;font-size:.85rem;border-radius:0;line-height:1.3}
.copy{top:6px;right:8px;position:absolute;z-index:1}
.top nav a:hover,.pn a:hover,.copy:hover{filter:brightness(1.25);color:#fff}
.top nav a:active,.pn a:active,.copy:active{transform:translateY(var(--u));filter:brightness(.9)}
.top{padding:10px 16px}.top nav{gap:8px}
.brand{font-size:1.1rem}.logo{width:calc(var(--u)*5);height:calc(var(--u)*5)}
/* select */
.ctl select{border:0;border-radius:0;border-style:solid;border-width:var(--u) var(--u) calc(var(--u)*2);border-image:url(ui/button.png) 1 1 2 1 fill/var(--u) var(--u) calc(var(--u)*2) var(--u) stretch;background:none;color:#fff;padding:0 6px;font-size:.85rem}
.ctl select option{background:#262626;color:#fff}
.ctl input[type=checkbox]{accent-color:var(--acc)}
/* slider: field=track, fill=isi (var --p), head=gagang */
input[type=range]{-webkit-appearance:none;appearance:none;height:calc(var(--u)*7);width:160px;margin:0;background:none;vertical-align:middle;cursor:pointer;--p:50%}
input[type=range]::-webkit-slider-runnable-track{height:calc(var(--u)*7);background:url(ui/fill.png) left center/var(--p) calc(var(--u)*16) no-repeat,url(ui/field.png) center/100% calc(var(--u)*16) no-repeat;image-rendering:pixelated}
input[type=range]::-moz-range-track{height:calc(var(--u)*7);background:url(ui/fill.png) left center/var(--p) calc(var(--u)*16) no-repeat,url(ui/field.png) center/100% calc(var(--u)*16) no-repeat;image-rendering:pixelated}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:calc(var(--u)*8);height:calc(var(--u)*8);margin-top:calc(var(--u)*-.5);border:0;border-radius:0;background:url(ui/slider-head.png) center/100% 100% no-repeat;image-rendering:pixelated}
input[type=range]::-moz-range-thumb{width:calc(var(--u)*8);height:calc(var(--u)*8);border:0;border-radius:0;background:url(ui/slider-head.png) center/100% 100% no-repeat;image-rendering:pixelated}
input[type=range]:hover::-webkit-slider-thumb{filter:brightness(1.3)}
/* scrollbar: thumb = scrollbar.png (9-slice), track gelap; slider (range) memakai slider-head.png + field/fill */
::-webkit-scrollbar{width:calc(var(--u)*6);height:calc(var(--u)*6);background:#171717}
::-webkit-scrollbar-track{background:#171717;border-left:var(--u) solid #0e0e0e}
::-webkit-scrollbar-thumb{border:0;border-style:solid;border-width:calc(var(--u)*3);border-image:url(ui/scrollbar.png) 3 fill/calc(var(--u)*3) stretch;background:none;min-height:calc(var(--u)*10);min-width:calc(var(--u)*10);image-rendering:pixelated}
::-webkit-scrollbar-thumb:hover{filter:brightness(1.3)}
::-webkit-scrollbar-corner{background:#171717}
@supports not selector(::-webkit-scrollbar){*{scrollbar-color:#6b6b6b #171717}}
th{background:#333;color:#fff}th,td{border-color:#555}
@media (max-width:600px){:root{--u:2px;--uh:4px}body{font-size:18px}}

/* ===== Bingkai seluruh situs: brand + nav masuk ke strip header ===== */
body{background:#101010 linear-gradient(45deg,#151515 25%,transparent 25%,transparent 75%,#151515 75%) 0 0/16px 16px;padding:16px 12px 32px}
.shell{--us:6px;max-width:1120px;margin:0 auto;border:0;border-style:solid;border-width:calc(var(--us)*6) calc(var(--us)*3) calc(var(--us)*3);border-image:url(ui/gui-header.png) 6 3 3 3 fill/calc(var(--us)*6) calc(var(--us)*3) calc(var(--us)*3) stretch;image-rendering:pixelated;padding:0 4px}
.shell .top{flex-wrap:nowrap;margin:calc(var(--us)*-6 + 2px) calc(var(--us)*-3) 0;height:calc(var(--us)*6 - 4px);padding:0 calc(var(--us)*3);max-width:none;position:relative;z-index:2}
.shell .top .brand{font-size:1rem;color:#fff;white-space:nowrap}
.shell .top nav a{font-size:.8rem;padding:0 8px;line-height:1.5;border-width:3px 3px 6px}
.shell main{padding-top:20px}
.shell footer{border-top:var(--u) solid #1a1a1a}
@media (max-width:600px){:root{--u:2px}.shell{--us:4px}body{padding:8px 4px 16px}.shell .top nav{gap:3px}.shell .top nav a{font-size:.62rem;padding:0 4px}.shell .top .brand{font-size:.75rem}.shell .logo{display:none}}