:root{--bg:#f7f5f1;--bg2:#efebff;--fg:#17151f;--muted:#5d5a6b;--card:#fff;--line:#e6e2ee;--line2:#d5cfe3;--accent:#5b3df5;--accent2:#8a5cff;--accent-fg:#fff;--soft:#efebff;--soft-fg:#3b25b8;--ok:#0f7a4a;--shadow:0 1px 2px rgba(23,21,31,.04),0 8px 24px -8px rgba(60,40,140,.14);--shadow-lg:0 2px 4px rgba(23,21,31,.04),0 24px 48px -16px rgba(60,40,140,.22);--radius:16px;--ease:cubic-bezier(.2,.8,.2,1);--mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;--sans:ui-rounded,"SF Pro Rounded",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#0f0e15;--bg2:#1c1740;--fg:#efedf7;--muted:#a6a2b8;--card:#17151f;--line:#2a2736;--line2:#3a3650;--accent:#9b86ff;--accent2:#c08bff;--accent-fg:#120d33;--soft:#241f45;--soft-fg:#cfc4ff;--ok:#5fd6a0;--shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px -8px rgba(0,0,0,.5);--shadow-lg:0 2px 4px rgba(0,0,0,.3),0 24px 48px -16px rgba(0,0,0,.6)}}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{margin:0;color:var(--fg);font:16px/1.65 var(--sans);background:var(--bg);background-image:radial-gradient(900px 420px at 85% -80px,var(--bg2),transparent 70%);background-repeat:no-repeat;-webkit-font-smoothing:antialiased}a{color:var(--accent)}.wrap{max-width:980px;margin:0 auto;padding:0 20px}header.site{position:sticky;top:0;z-index:10;backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);background:color-mix(in srgb,var(--bg) 78%,transparent);border-bottom:1px solid color-mix(in srgb,var(--line) 70%,transparent)}header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:60px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.02em;color:var(--fg);text-decoration:none;font-size:1.05rem}.brand svg{width:28px;height:28px;flex:none;transition:transform .25s var(--ease)}.brand:hover svg{transform:rotate(-8deg) scale(1.06)}nav{display:flex;gap:2px}.brand{white-space:nowrap}@media(max-width:520px){nav a:first-child{display:none}.brand{font-size:.98rem}nav a{padding:6px 10px}}nav a{padding:6px 12px;border-radius:999px;color:var(--muted);text-decoration:none;font-size:.92rem;font-weight:600;transition:background .15s,color .15s}nav a:hover{background:var(--soft);color:var(--soft-fg)}h1{font-size:clamp(1.9rem,4.6vw,2.9rem);line-height:1.1;letter-spacing:-.035em;font-weight:800;margin:36px 0 10px}h2{font-size:1.35rem;letter-spacing:-.02em;margin:44px 0 12px;line-height:1.25}h3{font-size:1.05rem;margin:20px 0 4px}.lede{color:var(--muted);font-size:1.12rem;margin:0 0 22px;max-width:60ch}.crumbs{font-size:.85rem;color:var(--muted);margin:22px 0 0}.crumbs a{color:var(--muted);text-decoration:none}.crumbs a:hover{color:var(--accent)}main>p,main>ol,main>div>p,details{max-width:72ch}.hero{padding:18px 0 6px}.hero h1{margin-top:34px;max-width:16ch}.hero h1 em{font-style:normal;background:linear-gradient(100deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}.finder{position:relative;margin:6px 0 8px;max-width:520px}.finder input{width:100%;font:inherit;padding:15px 18px 15px 48px;border-radius:999px;border:1.5px solid var(--line2);background:var(--card);color:var(--fg);box-shadow:var(--shadow);transition:border-color .15s,box-shadow .15s}.finder input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 22%,transparent)}.finder svg{position:absolute;left:18px;top:50%;translate:0 -50%;width:20px;height:20px;color:var(--muted);pointer-events:none}.trust{display:flex;flex-wrap:wrap;gap:8px 10px;margin:14px 0 0;padding:0;list-style:none}.trust li{font-size:.85rem;font-weight:600;color:var(--soft-fg);background:var(--soft);padding:5px 12px;border-radius:999px}.cat{margin-top:40px}.cat h2{margin:0 0 4px}.cat .note{margin:0 0 14px}.cat[hidden],.cards li[hidden]{display:none}.empty{color:var(--muted);margin:30px 0}.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px;list-style:none;padding:0;margin:0}.cards a{position:relative;display:flex;flex-direction:column;gap:6px;height:100%;padding:18px;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);text-decoration:none;color:var(--fg);box-shadow:var(--shadow);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s}.cards a:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:color-mix(in srgb,var(--accent) 55%,var(--line))}.cards a:active{transform:translateY(-1px) scale(.992)}.cards .ico{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;font-weight:800;font-size:.95rem;color:var(--soft-fg);background:var(--soft);margin-bottom:6px}.cards .t{font-weight:700;letter-spacing:-.01em;line-height:1.3}.cards .d{color:var(--muted);font-size:.9rem;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}[data-cat=whitespace] .ico{--c:#e8f0ff}[data-cat=html] .ico{background:#ffe9f1;color:#b4235e}[data-cat=case] .ico{background:#fff1dc;color:#9a5a00}[data-cat=lists] .ico{background:#e3f6ec;color:#0f7a4a}[data-cat=characters] .ico{background:#e9f4ff;color:#1a63b0}[data-cat=utility] .ico{background:#f0e9ff;color:#5b3df5}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){[data-cat=html] .ico{background:#3a1a2a;color:#ff9fc3}[data-cat=case] .ico{background:#3a2c14;color:#ffc66b}[data-cat=lists] .ico{background:#133224;color:#7be3b0}[data-cat=characters] .ico{background:#142a40;color:#8cc6ff}[data-cat=utility] .ico{background:#241f45;color:#cfc4ff}}}.tool{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:18px;margin:16px 0;box-shadow:var(--shadow-lg)}.opts{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}.opts label{display:flex;align-items:center;gap:8px;font-size:.9rem;font-weight:600;padding:7px 14px;border-radius:999px;background:var(--soft);color:var(--soft-fg);cursor:pointer;transition:background .15s}.opts label:hover{background:color-mix(in srgb,var(--soft) 80%,var(--accent) 20%)}.opts input[type=checkbox]{accent-color:var(--accent);width:16px;height:16px;margin:0}.opts input[type=text],.opts select{font:inherit;font-weight:500;padding:4px 10px;border:1px solid var(--line2);border-radius:8px;background:var(--card);color:var(--fg);min-width:90px}.io{display:grid;grid-template-columns:1fr 1fr;gap:14px;position:relative}.io.three .res{grid-column:1/-1}.io.three textarea{min-height:200px}@media(max-width:760px){.io{grid-template-columns:1fr}}.io h2{font-size:.78rem;margin:0 0 6px 2px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:700}.io h2 label{cursor:pointer}textarea{display:block;width:100%;min-height:260px;resize:vertical;font:14.5px/1.55 var(--mono);padding:14px 16px;border:1.5px solid var(--line);border-radius:14px;background:var(--bg);color:var(--fg);transition:border-color .15s,box-shadow .15s,background .15s}textarea:hover{border-color:var(--line2)}textarea:focus{outline:none;border-color:var(--accent);background:var(--card);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 20%,transparent)}#out{background:color-mix(in srgb,var(--soft) 55%,var(--card))}.btns{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;align-items:center}button{font:inherit;font-weight:600;font-size:.92rem;padding:9px 16px;border-radius:12px;border:1px solid var(--line2);background:var(--card);color:var(--fg);cursor:pointer;min-height:42px;transition:transform .12s var(--ease),background .15s,border-color .15s,box-shadow .15s}button:hover{background:var(--soft);border-color:var(--accent);color:var(--soft-fg)}button:active{transform:scale(.97)}button.primary{background:linear-gradient(135deg,var(--accent),var(--accent2));color:var(--accent-fg);border-color:transparent;padding:9px 22px;box-shadow:0 6px 16px -6px color-mix(in srgb,var(--accent) 70%,transparent)}button.primary:hover{filter:brightness(1.07);color:var(--accent-fg);border-color:transparent}button.primary.done{background:var(--ok);box-shadow:none}.stats{margin-left:auto;font-size:.8rem;color:var(--muted)}button:focus-visible,textarea:focus-visible,select:focus-visible,input:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:2px}.note{font-size:.88rem;color:var(--muted)}.tool>.note{margin:12px 2px 0}.status{color:var(--ok);font-size:.88rem;min-height:1.3em;font-weight:600;margin-top:6px}ol.steps,main>ol{list-style:none;counter-reset:s;padding:0;display:grid;gap:10px}main>ol>li{counter-increment:s;position:relative;padding:14px 16px 14px 56px;background:var(--card);border:1px solid var(--line);border-radius:14px}main>ol>li:before{content:counter(s);position:absolute;left:14px;top:50%;translate:0 -50%;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:.85rem;background:var(--soft);color:var(--soft-fg)}.example pre{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 14px;overflow:auto;white-space:pre-wrap;font:13px/1.55 var(--mono);margin:8px 0}.example strong{font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}.cols{display:grid;grid-template-columns:1fr 1fr;gap:14px}@media(max-width:700px){.cols{grid-template-columns:1fr}}details{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:4px 16px;margin:0 0 10px}summary{cursor:pointer;font-weight:700;padding:12px 0;list-style:none;display:flex;justify-content:space-between;gap:12px;align-items:center}summary::-webkit-details-marker{display:none}summary:after{content:"+";font-size:1.3rem;line-height:1;color:var(--accent);transition:transform .2s var(--ease)}details[open] summary:after{transform:rotate(45deg)}details p{margin:0 0 14px;color:var(--muted)}ul.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:10px;list-style:none;padding:0}ul.grid li a{display:block;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:var(--card);text-decoration:none;color:var(--fg);font-weight:600;transition:border-color .15s,transform .15s var(--ease)}ul.grid li a:hover{border-color:var(--accent);transform:translateY(-2px)}footer.site{margin-top:72px;padding:28px 0 48px;color:var(--muted);font-size:.9rem;border-top:1px solid var(--line);background:color-mix(in srgb,var(--card) 60%,transparent)}footer.site p{margin:0 0 10px;max-width:70ch}footer.site a{color:var(--muted);margin-right:16px;text-decoration:none;font-weight:600}footer.site a:hover{color:var(--accent)}.sr{position:absolute;left:-9999px}@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}.guide section>p,.guide section>ul,.guide section>ol{max-width:72ch}.guide ul,.guide ol{padding-left:1.3em;margin:0 0 14px}.guide li{margin:6px 0}.guide h2{margin-top:34px}