:root{--ink:#171a1e;--muted:#858d96;--line:#e5e7ea;--panel:#fff;--bg:#f6f7f8;--accent:#13b8cf}*{box-sizing:border-box}html{color-scheme:light}body{margin:0;background:var(--bg);color:var(--ink);font-family:"AimDigits",MiSans,"Segoe UI","Microsoft YaHei",Arial,sans-serif}button,input,select{font:inherit}.site-header{height:68px;padding:0 max(24px,calc((100vw - 1120px)/2));display:flex;align-items:center;gap:40px;background:#fff;border-bottom:1px solid #e8e9eb}.site-brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-size:14px;font-weight:800}.site-brand span{width:30px;height:30px;border-radius:9px;background:#17191d;color:#fff;display:grid;place-items:center;font-size:20px;font-weight:400}.site-nav{display:flex;align-items:center;gap:8px;margin-left:auto}.site-nav a{padding:9px 12px;border-radius:8px;color:#7c848e;text-decoration:none;font-size:10px}.site-nav a:hover,.site-nav a.active{background:#f0f2f3;color:#1e2227}.page-shell{width:min(1120px,calc(100% - 40px));margin:0 auto;padding:42px 0 60px}.page-hero{max-width:720px;margin-bottom:28px}.eyebrow{display:block;margin-bottom:10px;color:#0ca0b5;font-size:9px;font-weight:700;letter-spacing:1.5px}.page-hero h1{margin:0 0 12px;font-size:34px;letter-spacing:-1.4px}.page-hero p{margin:0;color:var(--muted);font-size:12px;line-height:1.75}.card{border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:0 2px 12px rgba(24,34,48,.035)}.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.tool-card{padding:25px}.tool-card h2{margin:0 0 7px;font-size:17px}.tool-card>p{margin:0 0 22px;color:#9299a2;font-size:10px;line-height:1.65}.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.field{display:grid;gap:7px}.field.full{grid-column:1/-1}.field label{color:#737b85;font-size:9px}.field input,.field select{width:100%;height:42px;padding:0 12px;border:1px solid #dfe2e5;border-radius:8px;background:#fafbfb;color:#24282d;outline:0}.field input:focus,.field select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(19,184,207,.1)}.result-box{margin-top:18px;padding:16px;border-radius:10px;background:#171b20;color:#fff;display:grid;grid-template-columns:1fr 1fr;gap:12px}.result-box span{display:block;color:#8f99a4;font-size:8px}.result-box strong{display:block;margin-top:5px;font-size:20px;font-variant-numeric:tabular-nums}.tool-button{height:42px;padding:0 17px;border:0;border-radius:8px;background:#171b20;color:#fff;font-size:10px;font-weight:700}.crosshair-builder{display:grid;grid-template-columns:240px 1fr;gap:25px}.crosshair-stage{height:240px;border-radius:14px;background:linear-gradient(145deg,#27313b,#151a20);position:relative;overflow:hidden}.crosshair-stage:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent 49.8%,rgba(255,255,255,.035) 50%,transparent 50.2%),linear-gradient(0deg,transparent 49.8%,rgba(255,255,255,.035) 50%,transparent 50.2%)}.generated-crosshair{--size:12px;--gap:4px;--thickness:2px;--color:#55ff55;position:absolute;left:50%;top:50%;width:1px;height:1px;z-index:2}.generated-crosshair i{position:absolute;background:var(--color)}.generated-crosshair .top{width:var(--thickness);height:var(--size);left:calc(var(--thickness)/-2);bottom:var(--gap)}.generated-crosshair .bottom{width:var(--thickness);height:var(--size);left:calc(var(--thickness)/-2);top:var(--gap)}.generated-crosshair .left{height:var(--thickness);width:var(--size);right:var(--gap);top:calc(var(--thickness)/-2)}.generated-crosshair .right{height:var(--thickness);width:var(--size);left:var(--gap);top:calc(var(--thickness)/-2)}.generated-crosshair .dot{width:var(--thickness);height:var(--thickness);left:calc(var(--thickness)/-2);top:calc(var(--thickness)/-2)}.range-field{display:grid;grid-template-columns:90px 1fr 38px;align-items:center;gap:9px;margin-bottom:12px}.range-field label,.toggle-field label{font-size:9px;color:#737b85}.range-field input{width:100%;accent-color:var(--accent)}.range-field output{font-size:9px;text-align:right;font-variant-numeric:tabular-nums}.toggle-field{display:flex;align-items:center;justify-content:space-between;margin:13px 0}.toggle-field input{accent-color:var(--accent)}.command-box{margin-top:16px;padding:13px;border:1px solid #e2e5e8;border-radius:9px;background:#fafbfb;color:#535c66;font:9px/1.7 Consolas,monospace;word-break:break-all}.page-actions{display:flex;gap:9px;margin-top:12px}.page-actions button{height:38px;padding:0 14px;border:1px solid #dde1e4;border-radius:8px;background:#fff;color:#59616a;font-size:9px}.page-actions .primary{border-color:#171b20;background:#171b20;color:#fff}.leaderboard-head{padding:18px 20px;display:flex;align-items:center;justify-content:space-between}.leaderboard-tabs{display:flex;gap:5px}.leaderboard-tabs button{height:31px;padding:0 13px;border:0;border-radius:7px;background:transparent;color:#8a929b;font-size:9px}.leaderboard-tabs button.active{background:#e9f7f9;color:#078fa3}.leaderboard-state{font-size:9px;color:#939aa3}.leaderboard-wrap{overflow-x:auto}.leaderboard-table{width:100%;border-collapse:collapse}.leaderboard-table th,.leaderboard-table td{padding:15px 20px;text-align:left;border-top:1px solid #eef0f2;font-size:10px;white-space:nowrap}.leaderboard-table th{color:#9aa1a9;font-weight:500;background:#fafbfb}.leaderboard-table td{color:#606974}.leaderboard-table td strong{color:#171b20;font-size:12px}.rank{width:46px;font-weight:800}.rank.top{color:#0da5ba}.legal-card{padding:32px;max-width:850px}.legal-card h2{margin:30px 0 10px;font-size:16px}.legal-card h2:first-child{margin-top:0}.legal-card p,.legal-card li{color:#616b75;font-size:11px;line-height:1.9}.legal-card a{color:#0b97aa}.site-footer{width:min(1120px,calc(100% - 40px));min-height:60px;margin:0 auto;border-top:1px solid #e2e4e6;display:flex;align-items:center;justify-content:space-between;color:#8d949c;font-size:9px}.site-footer a{color:inherit;text-decoration:none}.site-footer a:hover{color:#3f4750}.notice{padding:13px 15px;border-radius:9px;background:#fff8dc;color:#77652d;font-size:9px;line-height:1.6}.hidden{display:none!important}@media(max-width:850px){.site-header{padding:0 20px}.site-nav{overflow-x:auto}.site-nav a{padding:8px;white-space:nowrap}.page-shell{width:calc(100% - 28px);padding-top:28px}.tool-grid{grid-template-columns:1fr}.crosshair-builder{grid-template-columns:1fr}.site-footer{width:calc(100% - 28px)}}@media(max-width:560px){.site-header{gap:12px}.site-brand{font-size:0}.site-brand span{font-size:20px}.site-nav{gap:0}.page-hero h1{font-size:28px}.field-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.result-box{grid-template-columns:1fr 1fr}.tool-card{padding:20px}.site-footer{align-items:flex-start;flex-direction:column;justify-content:center;gap:7px}}

.leaderboard-mode-tabs{padding:0 20px 16px;display:flex;flex-wrap:wrap;gap:7px;border-top:1px solid #eef0f2;padding-top:16px}
.leaderboard-mode-tabs button{height:32px;padding:0 13px;border:1px solid #e2e5e8;border-radius:8px;background:#fff;color:#7d858e;font-size:9px}
.leaderboard-mode-tabs button:hover{background:#f7f9fa}.leaderboard-mode-tabs button.active{border-color:#13b8cf;background:#e9f7f9;color:#078fa3}

.trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.trust-card{padding:24px}.trust-card h2{margin:0 0 9px;font-size:17px}.trust-card p{margin:0;color:#66707a;font-size:11px;line-height:1.85}.trust-card a{display:inline-block;margin-top:14px;color:#0b97aa;text-decoration:none;font-size:10px;font-weight:700}.contact-list{display:grid;gap:14px;margin-top:20px}.contact-item{padding:18px;border:1px solid #e7e9eb;border-radius:12px;background:#fafbfb}.contact-item strong{display:block;margin-bottom:6px;font-size:12px}.contact-item p{margin:0;color:#66707a;font-size:11px;line-height:1.75}.language-switch{white-space:nowrap}.legal-links{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:6px 10px}.legal-links a{white-space:nowrap}@media(max-width:850px){.trust-grid{grid-template-columns:1fr}.legal-links{justify-content:flex-start}}

/* Shared navigation: match the homepage's compact, icon-led header. */
.site-header{position:relative;height:90px;padding:0 max(24px,calc((100vw - 1120px)/2));gap:0}
.site-brand{gap:10px;font-size:20px;letter-spacing:-.4px}
.site-brand img{width:42px;height:42px;display:block;object-fit:contain}
.site-brand span{display:inline;width:auto;height:auto;padding:0;border-radius:0;background:transparent;color:var(--ink);font-size:inherit;font-weight:800}
.site-nav{position:absolute;left:50%;top:15px;transform:translateX(-50%);height:59px;margin:0;padding:8px 18px;gap:16px;border:1px solid #e7ebef;border-radius:15px;background:#fff;box-shadow:0 6px 18px rgba(38,54,72,.08)}
.site-nav a{height:42px;padding:0 16px;display:flex;align-items:center;gap:9px;border-radius:10px;font-size:14px;color:#4d566a}
.site-nav a.active{background:var(--accent);color:#fff;box-shadow:0 4px 10px rgba(19,184,207,.2)}
.site-nav a:hover{background:#f5fafb;color:#087f91}
.site-nav svg{width:21px;height:21px;flex:0 0 auto;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
@media(max-width:900px){.site-header{height:auto;min-height:72px;padding:12px 20px;flex-wrap:wrap}.site-nav{position:static;transform:none;order:3;width:100%;height:auto;justify-content:center;overflow-x:auto}.site-nav a{height:38px;padding:0 12px;font-size:12px}.site-nav svg{width:18px;height:18px}}
@media(max-width:560px){.site-brand{font-size:0}.site-brand img{width:38px;height:38px}.site-nav{gap:4px;padding:6px 8px}.site-nav a{padding:0 8px;font-size:11px}}

/* Shared page motion keeps every content page in the same visual system. */
@keyframes site-rise-in{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
@keyframes site-nav-in{from{opacity:0;transform:translateX(-50%) translateY(-6px)}to{opacity:1;transform:translateX(-50%) translateY(0)}}
.site-header .site-brand{animation:site-rise-in .45s .03s cubic-bezier(.2,.7,.2,1) both}.site-header .site-nav{animation:site-nav-in .5s .08s cubic-bezier(.2,.7,.2,1) both}
.site-nav a{transition:background-color .2s ease,color .2s ease,transform .2s ease}.site-nav a:hover{transform:translateY(-2px)}.site-nav a:active{transform:translateY(0) scale(.98)}
.page-shell>.page-hero{animation:site-rise-in .5s .12s cubic-bezier(.2,.7,.2,1) both}.page-shell>.card,.page-shell>.tool-grid,.page-shell>.notice{animation:site-rise-in .55s .18s cubic-bezier(.2,.7,.2,1) both}
.tool-card,.trust-card,.contact-item,.legal-card,.leaderboard-card{transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}.tool-card:hover,.trust-card:hover,.contact-item:hover,.legal-card:hover,.leaderboard-card:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(24,34,48,.08);border-color:#cde8ec}
.leaderboard-tabs button,.leaderboard-mode-tabs button,.tool-button,.page-actions button{transition:transform .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease}.leaderboard-tabs button:active,.leaderboard-mode-tabs button:active,.tool-button:active,.page-actions button:active{transform:scale(.97)}
.leaderboard-table tbody tr{transition:background-color .18s ease,transform .18s ease}.leaderboard-table tbody tr:hover{background:#f7fcfd;transform:translateX(2px)}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;transition-duration:.001ms!important}}

/* One shared header is installed by site-header.js on every non-training
   route. Keep its geometry aligned with the homepage header. */
.site-header{display:grid;grid-template-columns:minmax(180px,1fr) auto minmax(330px,1fr);align-items:center;height:90px;padding:0 clamp(24px,4vw,64px);column-gap:20px;background:#fff;border:0;box-shadow:0 4px 24px rgba(38,54,72,.04)}
.site-header .site-brand{grid-column:1;justify-self:start;gap:11px;min-width:0;font-size:23px;letter-spacing:-.8px;animation:site-rise-in .45s .03s cubic-bezier(.2,.7,.2,1) both}.site-header .site-brand img{width:50px;height:50px;flex:0 0 auto}.site-header .site-brand span{white-space:nowrap}
.site-header .site-nav{grid-column:2;position:static;left:auto;top:auto;transform:none;justify-self:center;height:59px;margin:0;padding:8px 18px;gap:16px;overflow:visible;animation:site-rise-in .5s .08s cubic-bezier(.2,.7,.2,1) both}.site-header .site-nav a{height:42px;padding:0 16px;gap:9px;border-radius:10px;font-size:14px;white-space:nowrap}.site-header .site-nav a.active{background:#13b8cf;color:#fff;box-shadow:0 5px 12px rgba(19,184,207,.22)}
.site-nav-icon,.site-action-icon{width:21px;height:21px;flex:0 0 auto;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.site-utility-nav{grid-column:3;justify-self:end;display:flex;align-items:center;gap:10px;min-width:0;animation:site-rise-in .5s .14s cubic-bezier(.2,.7,.2,1) both}.site-actions{display:flex;align-items:center;gap:8px}.site-actions a,.site-account-link{height:43px;padding:0 13px;display:flex;align-items:center;justify-content:center;gap:8px;border:1px solid #dce3e9;border-radius:10px;background:#fff;color:#334056;text-decoration:none;font-size:13px;white-space:nowrap;transition:border-color .2s ease,color .2s ease,transform .2s ease}.site-actions a:hover,.site-account-link:hover{border-color:#13b8cf;color:#078fa3;transform:translateY(-1px)}
.site-account-link{max-width:170px;overflow:hidden}.site-account-link>span:last-child{overflow:hidden;text-overflow:ellipsis}.site-account-avatar{width:25px;height:25px;flex:0 0 auto;display:grid;place-items:center;border-radius:50%;background:#e7f8fa;color:#0798ad;font-size:11px;font-weight:800}.site-language-links{display:flex;align-items:center;padding:3px;border:1px solid #e5e7ea;border-radius:9px;background:#f6f7f8}.site-language-links a{min-width:30px;height:26px;padding:0 7px;display:grid;place-items:center;border-radius:6px;color:#8a9199;text-decoration:none;font-size:8px;font-weight:700}.site-language-links a.active{background:#fff;color:#171a1e;box-shadow:0 1px 4px rgba(20,28,40,.08)}
@media(max-width:1240px) and (min-width:901px){.site-header{grid-template-columns:minmax(150px,1fr) auto minmax(275px,1fr);column-gap:14px;padding-left:20px;padding-right:20px}.site-header .site-brand{font-size:20px}.site-header .site-brand img{width:44px;height:44px}.site-header .site-nav{height:56px;padding:7px 10px;gap:5px}.site-header .site-nav a{height:40px;padding:0 10px;gap:7px;font-size:12px}.site-nav-icon{width:19px;height:19px}.site-utility-nav{gap:7px}.site-actions{gap:6px}.site-actions a{width:42px;padding:0}.site-actions a span{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.site-account-link{max-width:126px;padding:0 9px;font-size:11px}}
@media(max-width:900px){.site-header{display:grid;grid-template-columns:auto minmax(0,1fr);height:auto;min-height:0;padding:10px 16px 12px;column-gap:12px;row-gap:10px}.site-header .site-brand{grid-column:1;grid-row:1}.site-utility-nav{grid-column:2;grid-row:1;justify-self:end;gap:7px}.site-header .site-nav{grid-column:1/-1;grid-row:2;position:static;width:min(100%,560px);height:auto;min-width:0;padding:6px;gap:4px;justify-content:stretch}.site-header .site-nav a{flex:1;justify-content:center;min-width:0;height:40px;padding:0 9px;font-size:12px}.site-actions{gap:5px}.site-actions a{width:40px;padding:0}.site-actions a span{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.site-account-link{max-width:126px;padding:0 9px;font-size:11px}}
@media(max-width:560px){.site-header .site-brand span{display:none}.site-header .site-brand img{width:38px;height:38px}.site-account-link{width:40px;max-width:40px;padding:0 7px}.site-account-link>span:last-child{display:none}.site-language-links a{min-width:25px;padding:0 5px}.site-header .site-nav{gap:4px;padding:6px 8px}.site-header .site-nav a{height:38px;padding:0 5px;gap:5px;font-size:10px}.site-nav-icon{width:17px;height:17px}}

/* The utility area mirrors the training dashboard on every main route. */
.site-account-copy{display:grid;min-width:0;gap:1px;text-align:left;line-height:1.08}.site-account-copy>span{overflow:hidden;text-overflow:ellipsis}.site-account-copy small{color:#9a6e18;font-size:9px;font-weight:750;font-variant-numeric:tabular-nums}.site-account-copy small.hidden{display:none!important}
@media(max-width:1600px) and (min-width:901px){.site-actions a{width:43px;padding:0}.site-actions a span{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.site-account-link{max-width:150px;padding:0 9px;font-size:11px}}
@media(max-width:1100px) and (min-width:901px){.site-header .site-brand span{display:none}.site-header .site-nav{gap:3px;padding:7px}.site-header .site-nav a{width:40px;padding:0;justify-content:center}.site-header .site-nav a span{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.site-actions{gap:2px}.site-account-link{width:40px;max-width:40px;padding:0 7px}.site-account-link>.site-account-copy{display:none}}
@media(max-width:900px){.site-actions{gap:3px}.site-actions a{width:36px}.site-utility-nav{gap:5px}}
@media(max-width:560px){.site-actions{gap:2px}.site-actions a{width:32px;height:38px}.site-action-icon{width:18px;height:18px}.site-account-link>span:last-child{display:none}}
@media(max-width:360px){.site-header{row-gap:8px}.site-utility-nav{display:contents}.site-actions{grid-column:1/-1;grid-row:3;justify-self:center}.site-account-link{grid-column:2;grid-row:1;justify-self:end;margin-right:58px}.site-language-links{grid-column:2;grid-row:1;justify-self:end}.site-header .site-nav{grid-row:2}}

/* Single-row shared header. The five tool entries stay in a hover flyout. */
.site-header{position:relative}
.site-tools-nav{position:absolute;left:0;right:0;top:100%;z-index:60;transform:translateY(-12px);transform-origin:top center;display:flex;align-items:center;justify-content:center;padding:12px clamp(24px,4vw,64px);border:0;border-top:1px solid #e6edf0;border-bottom:1px solid #dce8ec;border-radius:0 0 20px 20px;background:rgba(255,255,255,.97);box-shadow:0 22px 50px rgba(24,83,99,.14);opacity:0;visibility:hidden;pointer-events:none;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);transition:opacity .24s cubic-bezier(.2,.8,.2,1),transform .3s cubic-bezier(.16,1,.3,1),visibility 0s linear .3s;will-change:transform,opacity}
.site-tools-nav .site-actions{width:min(1120px,100%);display:flex;align-items:center;justify-content:center;gap:10px}
.site-tools-nav .site-actions a{width:auto;height:44px;padding:0 16px;display:flex;align-items:center;justify-content:center;gap:9px;border:1px solid #dce3e9;border-radius:10px;background:#fff;color:#334056;font-size:13px;white-space:nowrap;box-shadow:0 5px 14px rgba(24,83,99,.04)}
.site-tools-nav .site-actions a span{position:static;width:auto;height:auto;padding:0;margin:0;overflow:visible;clip:auto;white-space:nowrap;border:0}
.site-tools-nav .site-actions a:hover{border-color:#13b8cf;color:#078fa3;transform:translateY(-1px)}
.site-header:hover .site-tools-nav,.site-header:focus-within .site-tools-nav,.site-tools-nav:hover{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0);transition-delay:0s}

@media(max-width:900px){
  .site-tools-nav{position:static;left:auto;top:auto;transform:none;opacity:1;visibility:visible;pointer-events:auto;grid-column:1/-1;grid-row:3;border:0;background:transparent;box-shadow:none;padding:2px 0}
  .site-tools-nav .site-actions{width:100%;justify-content:space-between;gap:6px}
  .site-tools-nav .site-actions a{flex:1;min-width:0;height:40px;padding:0 6px;gap:6px;font-size:11px}
}