:root{--bg:#F5F6FA;--card:#fff;--ink:#101828;--mute:#5B6478;--line:#E3E6EE;--red:#E5322D;--blue:#2B59FF;--r:14px}
@media(prefers-color-scheme:dark){:root{--bg:#0C111B;--card:#151B29;--ink:#EEF1F7;--mute:#9AA4B8;--line:#252D3F}}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 "Instrument Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
h1,h2,h3{font-family:"Bricolage Grotesque","Instrument Sans",system-ui,sans-serif;line-height:1.15;margin:0 0 .5em;letter-spacing:-.02em}
h1{font-size:clamp(2rem,5vw,3.4rem)}h2{font-size:clamp(1.4rem,3vw,2rem)}h3{font-size:1.1rem}
a{color:var(--blue)}.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
:focus-visible{outline:3px solid var(--blue);outline-offset:2px}
header{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;height:66px;gap:16px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font:800 1.5rem "Bricolage Grotesque",sans-serif;letter-spacing:-.04em}
.logo b{color:var(--red)}
.logo svg{width:38px;height:38px;overflow:visible}
.sheet{fill:var(--card);stroke:var(--ink);stroke-width:2.5}
.ln{stroke:var(--ink);stroke-width:2.5;stroke-linecap:round;stroke-dasharray:14;stroke-dashoffset:14;animation:draw 4s ease-in-out infinite}
.ln:nth-of-type(2){animation-delay:.25s}.ln:nth-of-type(3){animation-delay:.5s}
.fold{fill:var(--red);transform-origin:26px 6px;animation:flip 4s ease-in-out infinite}
@keyframes draw{0%,10%{stroke-dashoffset:14}35%,80%{stroke-dashoffset:0}95%,100%{stroke-dashoffset:14}}
@keyframes flip{0%,30%{transform:scale(1)}45%{transform:scale(.55,1.1) rotate(-6deg)}60%,100%{transform:scale(1)}}
nav{display:flex;gap:4px;align-items:center;flex-wrap:wrap}
nav a{color:var(--ink);text-decoration:none;padding:8px 12px;border-radius:10px;font-weight:600;font-size:.95rem}
nav a:hover{background:var(--line)}nav a.cta{background:var(--ink);color:var(--bg)}
.hero{padding:64px 0 36px;text-align:center}.hero p{max-width:640px;margin:0 auto;color:var(--mute);font-size:1.15rem}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px;padding:20px 0 40px}
.tile{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px;text-decoration:none;color:var(--ink);transition:border-color .2s,transform .2s}
.tile:hover{border-color:var(--red);transform:translateY(-3px)}
.tile p{margin:0;color:var(--mute);font-size:.95rem}
.ic{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;margin-bottom:14px;background:color-mix(in srgb,var(--h) 14%,transparent)}
.ic svg{width:24px;height:24px;stroke:var(--h);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.work{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:28px;margin:12px 0 40px}
.drop{border:2px dashed var(--line);border-radius:var(--r);padding:44px 20px;text-align:center;cursor:pointer;transition:.2s}
.drop.on,.drop:hover{border-color:var(--red);background:color-mix(in srgb,var(--red) 6%,transparent)}
.drop strong{display:block;font-size:1.2rem}.drop span{color:var(--mute);font-size:.9rem}
.files{list-style:none;padding:0;margin:16px 0}
.files li{display:flex;align-items:center;gap:10px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;margin-bottom:8px}
.files .n{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.files small{color:var(--mute)}
button,.btn{font:700 1rem inherit;font-family:inherit;border:0;border-radius:12px;padding:12px 22px;cursor:pointer;background:var(--red);color:#fff;text-decoration:none;display:inline-block}
button.g{background:var(--line);color:var(--ink);padding:6px 10px;font-size:.85rem}
button:disabled{opacity:.5;cursor:not-allowed}
.opts{display:grid;gap:12px;margin:16px 0}.opts label{font-weight:600;display:grid;gap:6px}
input[type=text],select,textarea{font:inherit;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink);width:100%}
.msg{margin-top:14px;padding:12px 14px;border-radius:10px;display:none}.msg.err{display:block;background:#E5322D22}.msg.ok{display:block;background:#1E9E5A22}
.prose{max-width:760px}.prose p,.prose li{color:var(--mute)}.prose h2{margin-top:1.6em}
details{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin-bottom:8px}summary{cursor:pointer;font-weight:600}
footer{border-top:1px solid var(--line);margin-top:48px;padding:44px 0 24px;background:var(--card)}
.fg{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px}
footer h3{font-size:.95rem}footer ul{list-style:none;padding:0;margin:0}footer li{margin:6px 0}footer a{color:var(--mute);text-decoration:none}footer a:hover{color:var(--red)}
.copy{margin-top:28px;padding-top:16px;border-top:1px solid var(--line);color:var(--mute);font-size:.85rem}
@media(max-width:760px){.fg{grid-template-columns:1fr 1fr}nav a:not(.cta){display:none}.work{padding:16px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.ln{stroke-dashoffset:0}}