:root{--ac:#6D28D9;--acd:#6D28D9_DEEP;--tx:#231A38;--mut:#635C7E;--bg:#F6F3FC;--card:#FFFFFF;--bd:#E2DAF4}
*{box-sizing:border-box}
body{margin:0;font-family:ui-sans-serif,system-ui,'Segoe UI',Roboto,sans-serif;background:var(--bg);color:var(--tx);line-height:1.65}
.wrap{max-width:840px;margin:0 auto;padding:0 20px}
@media(min-width:960px){.tool,.ranks{margin-left:-70px;margin-right:-70px}}
a{color:var(--acd)}
.nav{background:#fff;border-bottom:1.5px solid var(--bd)}
nav.site{display:block}
.nav-in{max-width:1080px;margin:0 auto;padding:10px 20px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.nav-logo{display:inline-flex;align-items:center;gap:9px;font-weight:800;font-size:1.05rem;color:var(--tx);text-decoration:none}
.nav-logo .mark{display:inline-flex}
.nav-logo svg{width:30px;height:30px;border-radius:8px}
.nav-links{display:flex;gap:4px;flex-wrap:wrap;margin-left:auto}
.nav-links a{color:var(--mut);text-decoration:none;font-weight:600;font-size:.92rem;padding:8px 12px;border-radius:9px;transition:background .15s,color .15s}
.nav-links a:hover{background:var(--bg);color:var(--acd)}
.nav-links a:focus-visible{outline:3px solid var(--ac);outline-offset:2px}
h1{font-size:2rem;line-height:1.2;margin:.4em 0}
h2{font-size:1.3rem;margin:1.6em 0 .5em}
h3{margin:.9em 0 .4em}
.hero{display:flex;flex-direction:column;align-items:center;text-align:center;padding:34px 0 8px}
.hero-art{max-width:100%;height:auto;border-radius:14px}
.hero.slim{padding:22px 0 4px}
.sub{color:var(--mut);max-width:760px;margin:.6em auto;font-size:1.02rem}
.badges{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin:8px 0}
.badges span{background:#fff;border:1px solid var(--bd);border-radius:999px;padding:5px 14px;font-size:.82rem;color:var(--acd);font-weight:600}
.sect{margin:26px 0}
.steps{padding-left:1.2em}
.steps li{margin:.5em 0}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px}
.tcard{background:var(--card);border:1.5px solid var(--bd);border-radius:14px;padding:16px;text-decoration:none;color:inherit;transition:transform .15s,border-color .15s}
.tcard:hover{transform:translateY(-2px);border-color:var(--ac)}
.tcard h3{margin:0 0 6px;color:var(--acd);font-size:1.02rem}
.tcard p{margin:0;font-size:.88rem;color:var(--mut)}
.crumbs{font-size:.85rem;color:var(--mut);margin-top:18px}
.crumbs a{color:var(--mut)}
.tool,.faq,.related,.ranks{background:var(--card);border:1.5px solid var(--bd);border-radius:16px;padding:18px 20px;margin:14px 0}
.tool-head h2{margin:0 0 4px}
.tool-sub{color:var(--mut);margin:.2em 0 .8em;font-size:.95rem}
.tool-line{font-size:.9rem;color:var(--mut)}
.hint{font-size:.85rem;color:var(--mut)}
.mouse-stage{display:flex;gap:22px;align-items:flex-start;flex-wrap:wrap}
.mouse-stage svg{background:var(--bg);border-radius:14px}
.key-list{list-style:none;padding:0;margin:0 0 10px;columns:2;font-size:.92rem}
.key-list li{padding:3px 0;break-inside:avoid}
.key-list .n{display:inline-block;min-width:2.2em;font-family:ui-monospace,Consolas,monospace;font-weight:700;text-align:right}
.key-list li.lit{color:var(--acd)}
.pills{display:flex;gap:8px;flex-wrap:wrap;margin:6px 0 12px}
.pill{border:1.5px solid var(--bd);background:#fff;color:var(--mut);border-radius:999px;padding:8px 18px;min-height:38px;font-weight:600;cursor:pointer;transition:all .15s}
.pill:hover{border-color:var(--ac);color:var(--acd)}
.pill.on{background:var(--ac);border-color:var(--ac);color:#fff}
.pill:focus-visible,.pad:focus-visible,.ghost:focus-visible{outline:3px solid var(--ac);outline-offset:2px}
.cps-stage,.dc-stage,.dpi-stage{display:flex;gap:22px;align-items:center;flex-wrap:wrap}
.pad{min-width:260px;min-height:150px;border:2.5px solid var(--ac);border-radius:18px;background:var(--bg);cursor:pointer;font-size:1.15rem;font-weight:700;color:var(--acd);padding:16px;user-select:none;-webkit-user-select:none;touch-action:manipulation;transition:transform .1s,background .15s}
.pad:hover{background:#EDE9FE}
.pad:active{transform:scale(.985)}
.pad.running{background:var(--ac);color:#fff}
.pad-grid{display:inline-grid;text-align:center}
.pad-grid>span{grid-area:1/1;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .15s}
.pad .s-idle{opacity:1}
.pad.running .s-idle,.pad.done .s-idle{opacity:0}
.pad.running .s-run{opacity:1}
.pad.done .s-done{opacity:1}
.big{font-size:2.6rem;font-weight:800;margin:0;color:var(--acd)}
.big small{font-size:1rem;font-weight:600;color:var(--mut)}
.ghost{border:1.5px solid var(--bd);background:#fff;color:var(--acd);border-radius:10px;padding:9px 18px;min-height:38px;font-weight:600;cursor:pointer;transition:border-color .15s}
.ghost:hover{border-color:var(--ac)}
.gap-list{list-style:none;padding:0;margin:.4em 0;font-family:ui-monospace,Consolas,monospace;font-size:.88rem;color:var(--mut);max-height:7.2em;overflow:auto}
.kb-board{background:var(--bg);border-radius:14px;padding:12px;overflow-x:auto}
.krow{display:flex;gap:6px;margin:6px 0}
.kb-board kbd{flex:1;min-width:34px;min-height:40px;display:flex;align-items:center;justify-content:center;background:#fff;border:1.5px solid var(--bd);border-bottom-width:3px;border-radius:8px;font-size:.72rem;font-family:ui-monospace,Consolas,monospace;user-select:none;-webkit-user-select:none}
.kb-board kbd[data-k="Space"]{min-width:220px}
.kb-board kbd.lit{background:var(--ac);border-color:var(--acd);color:#fff;transform:translateY(2px);border-bottom-width:1.5px}
.dpi-cfg{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin-bottom:12px}
.dpi-cfg label{font-weight:600}
.dpi-cfg input,.dpi-cfg select{border:1.5px solid var(--bd);border-radius:8px;padding:7px 10px;font-size:1rem;width:6em;background:#fff;color:var(--tx)}
.tbl-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.tbl{width:100%;border-collapse:collapse;background:#fff;border:1.5px solid var(--bd);border-radius:12px;overflow:hidden;font-size:.93rem}
.tbl th{background:#EFEAFA;text-align:left;padding:9px 12px;font-size:.8rem;letter-spacing:.05em;text-transform:uppercase;color:var(--acd)}
.tbl td{padding:9px 12px;border-top:1px solid var(--bd);vertical-align:top}
.tbl td code,.tool code{font-family:ui-monospace,Consolas,monospace;font-weight:700}
.ig{margin:24px auto;background:#fff;border:1px solid var(--bd);border-radius:16px;padding:14px;max-width:100%;width:fit-content;box-sizing:border-box;overflow-x:auto}
.ig img{min-width:560px;width:auto;max-width:100%;height:auto;display:block}
.ig figcaption{text-align:center;font-size:13px;color:var(--mut);margin-top:8px}
.qa{margin:12px 0}
.qa h3{margin:0 0 4px;font-size:1rem}
.qa p{margin:0;color:var(--mut);font-size:.94rem}
.next{color:var(--mut);font-size:.92rem}
.related a{display:inline-block;margin:4px 10px 4px 0;color:var(--acd)}
footer{margin-top:44px;border-top:1.5px solid var(--bd);background:#fff}
.foot-in{max-width:1060px;margin:0 auto;padding:26px 20px;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:22px}
.foot-brand .mark{display:inline-flex;vertical-align:-6px;margin-right:8px}
.foot-brand p{color:var(--mut);font-size:.86rem;margin:.6em 0 0}
.foot-col h4{margin:.2em 0 .5em;font-size:.8rem;letter-spacing:.06em;text-transform:uppercase;color:var(--mut)}
.foot-col a{display:block;color:var(--tx);text-decoration:none;font-size:.9rem;padding:3px 0}
.foot-col a:hover{color:var(--acd)}
.foot-legal{max-width:1060px;margin:0 auto;padding:0 20px 22px;color:var(--mut);font-size:.8rem}
.btn{display:inline-block;background:var(--ac);color:#fff;border-radius:12px;padding:12px 22px;font-weight:700;text-decoration:none;transition:transform .1s}
.btn:active{transform:scale(.97)}
.btn:hover{background:var(--acd)}
@media(max-width:760px){.foot-in{grid-template-columns:1fr 1fr}.hero{padding-top:18px;padding-bottom:2px}.hero h1{font-size:1.9rem}.hero .sub{font-size:.9rem;margin:.35em auto}.badges span{padding:4px 11px;font-size:.78rem}.hero-art{width:350px;max-width:none;margin:0 auto}.kb-board kbd{min-width:28px;font-size:.62rem}.kb-board kbd[data-k="Space"]{min-width:130px}}
@media(max-width:420px){.foot-in{grid-template-columns:1fr}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important;scroll-behavior:auto!important}}