:root{--bg:#f5f7fb;--panel:#fff;--ink:#101a33;--mute:#56627d;--line:#d9dfec;--acc:#1f4fd8;--acc2:#e8eeff;--on:#fff;--r:10px}
:root[data-theme=dark]{--bg:#0d1424;--panel:#151e33;--ink:#e8edf8;--mute:#9aa7c4;--line:#2a3652;--acc:#7da2ff;--acc2:#1c2a4d;--on:#0d1424}
@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#0d1424;--panel:#151e33;--ink:#e8edf8;--mute:#9aa7c4;--line:#2a3652;--acc:#7da2ff;--acc2:#1c2a4d;--on:#0d1424}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:1rem/1.6 "Avenir Next","Segoe UI",system-ui,-apple-system,Roboto,sans-serif}
a{color:var(--acc)}h1,h2,h3{line-height:1.2;letter-spacing:-.01em}
.wrap{max-width:68rem;margin:0 auto;padding:0 1.1rem}
.top{background:var(--panel);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:3.6rem;flex-wrap:wrap}
.logo{font-weight:800;font-size:1.35rem;color:var(--ink);text-decoration:none;letter-spacing:-.03em}.logo i{font-style:normal;color:var(--acc)}
nav{display:flex;gap:.3rem;flex-wrap:wrap;align-items:center}nav a{padding:.5rem .7rem;color:var(--ink);text-decoration:none;border-radius:8px}nav a:hover{background:var(--acc2)}
button,.btn{font:inherit;cursor:pointer;border:1px solid var(--acc);background:var(--acc);color:var(--on);padding:.6rem 1rem;border-radius:8px;min-height:44px}
button.ghost,#theme{background:transparent;color:var(--acc)}
button:hover{filter:brightness(1.08)}
:focus-visible{outline:3px solid var(--acc);outline-offset:2px}
.hero{padding:3.2rem 0 2rem}.hero h1{font-size:clamp(2.1rem,6.4vw,3.9rem);margin:0 0 .6rem;max-width:14ch}
.hero p{color:var(--mute);max-width:40rem;font-size:1.1rem;margin:0 0 1.4rem}
#q{width:100%;max-width:38rem;font:inherit;font-size:1.15rem;padding:1rem 1.1rem;border-radius:var(--r);border:2px solid var(--line);background:var(--panel);color:var(--ink)}
#q:focus{border-color:var(--acc);outline:none}.hint{color:var(--mute);font-size:.9rem;margin-top:.5rem}
.grid{display:grid;gap:.8rem;grid-template-columns:repeat(auto-fill,minmax(15rem,1fr))}
.card{display:block;padding:1rem 1.1rem;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);text-decoration:none;color:var(--ink)}
.card[hidden]{display:none}.card b{display:block;color:var(--acc)}.card span{color:var(--mute);font-size:.93rem}.card:hover{border-color:var(--acc)}
section{margin:2rem 0}.cats{display:flex;gap:.6rem;flex-wrap:wrap;margin-bottom:1.5rem}.cats a{padding:.5rem .9rem;border:1px solid var(--line);border-radius:99px;background:var(--panel);text-decoration:none}
.benefits{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(14rem,1fr))}.benefits div{border-left:3px solid var(--acc);padding-left:.9rem}.benefits h3{margin:0 0 .2rem;font-size:1.05rem}.benefits p{margin:0;color:var(--mute)}
.crumbs{font-size:.9rem;color:var(--mute);padding:1rem 0 0}.crumbs a{color:var(--mute)}
.toolbox{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:1.2rem;margin:1rem 0}
.toolbox label{display:block;font-weight:600;margin:.8rem 0 .3rem}.toolbox label.chk{display:inline-flex;gap:.4rem;align-items:center;font-weight:400;margin:.3rem 1rem .3rem 0}
textarea,input[type=number],input:not([type]),select{font:inherit;width:100%;padding:.65rem;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink)}
input[type=number],select{width:auto;min-width:7rem}.mono{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:1.1rem}input[type=range]{width:100%}
.row{display:flex;gap:.7rem;flex-wrap:wrap;align-items:center;margin:.6rem 0}.row label{margin:0}
fieldset{border:1px solid var(--line);border-radius:8px;margin:.8rem 0}output{font-weight:700;color:var(--acc)}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(9rem,1fr));gap:.7rem;margin:1rem 0}.stats dt{color:var(--mute);font-size:.88rem;grid-column:auto}.stats dd{margin:0 0 .3rem;font-size:1.5rem;font-weight:700}
.msg{color:var(--mute);min-height:1.5em}.badge{display:inline-block;background:var(--acc2);color:var(--acc);padding:.2rem .7rem;border-radius:99px;font-size:.88rem;font-weight:600}
details{border-bottom:1px solid var(--line);padding:.7rem 0}summary{cursor:pointer;font-weight:600}
.two{display:grid;gap:2rem;grid-template-columns:repeat(auto-fit,minmax(18rem,1fr))}
footer{margin-top:3rem;padding:2rem 0;border-top:1px solid var(--line);color:var(--mute);font-size:.93rem}
@media(prefers-reduced-motion:no-preference){.card{transition:border-color .15s}}
.drop{display:block;position:relative;text-align:center;padding:2.2rem 1rem;border:2px dashed var(--line);border-radius:var(--r);background:var(--bg);cursor:pointer;font-weight:600;margin:0 0 .8rem}
.drop input{position:absolute;opacity:0;width:1px;height:1px}.drop.on,.drop:hover,.drop:focus-within{border-color:var(--acc);background:var(--acc2)}
.res{list-style:none;padding:0;margin:.8rem 0}.res li{display:flex;gap:.8rem;align-items:center;flex-wrap:wrap;padding:.6rem 0;border-bottom:1px solid var(--line)}.res img{object-fit:cover;border-radius:6px;height:48px}.res span{flex:1;min-width:10rem;overflow-wrap:anywhere}.res .btn{text-decoration:none;display:inline-flex;align-items:center}.res .bad{color:#b3261e}:root[data-theme=dark] .res .bad{color:#ff8a80}
#pv{max-width:100%;height:auto;border:1px solid var(--line);border-radius:8px;background:repeating-conic-gradient(var(--line) 0 25%,transparent 0 50%) 0 0/16px 16px}
.diff{border:1px solid var(--line);border-radius:8px;padding:.5rem;margin:.8rem 0;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.92rem;overflow-x:auto}.diff div{white-space:pre-wrap;padding:.05rem .4rem}.diff.w{white-space:pre-wrap}
.add{background:#d3f2d9;color:#0b3d1a}.del{background:#fbd9d6;color:#5c0f0a;text-decoration:line-through}
:root[data-theme=dark] .add{background:#17402a;color:#b6f0c4}:root[data-theme=dark] .del{background:#4a1c1a;color:#ffc9c4}
@media(prefers-color-scheme:dark){:root:not([data-theme=light]) .add{background:#17402a;color:#b6f0c4}:root:not([data-theme=light]) .del{background:#4a1c1a;color:#ffc9c4}}
.gp{height:12rem;border-radius:var(--r);border:1px solid var(--line);margin:.8rem 0}.frame{width:100%;height:20rem;border:1px solid var(--line);border-radius:8px;background:#fff}
input[type=color]{width:3rem;height:2.6rem;padding:.1rem;border:1px solid var(--line);border-radius:8px;background:var(--bg)}