:root{font-family:Inter,system-ui,sans-serif;color:#17233b;background:#f4f6fb;line-height:1.65;--brand:#5147dc;--border:#dce2ef;--muted:#53627a}*{box-sizing:border-box}body{margin:0}a{color:var(--brand);text-underline-offset:3px}button,input,select{font:inherit}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #8379ff;outline-offset:3px}button,.action{border:1px solid var(--border);border-radius:10px;background:white;padding:8px 12px;color:#273451}button:hover{background:#eef0ff}.top{position:sticky;top:0;z-index:20;background:#17213b;color:white;padding:12px 24px;display:flex;align-items:center;justify-content:space-between;gap:12px}.top a{color:white;text-decoration:none}.brand{font-size:18px;font-weight:800}.top-actions{display:flex;gap:8px;align-items:center}.top button{background:#293655;color:white;border-color:#465473}.menu-button{display:none}.layout{max-width:1560px;margin:auto;display:grid;grid-template-columns:275px minmax(0,1fr);gap:28px;padding:26px}.sidebar{position:sticky;top:82px;align-self:start;max-height:calc(100vh - 105px);overflow:auto;border:1px solid var(--border);border-radius:18px;background:white;padding:18px}.sidebar label{display:block;font-size:12px;font-weight:800;margin-bottom:5px}.sidebar input,.sidebar select{width:100%;border:1px solid #bac5d9;border-radius:9px;padding:9px;margin-bottom:12px;background:white;min-width:0}.sidebar nav a{display:block;padding:7px 10px;border-radius:9px;text-decoration:none;color:#42516b;font-size:13px}.sidebar nav a[aria-current]{background:#eae8ff;color:#3830a3;font-weight:800}.sidebar nav strong{display:block;margin:18px 10px 6px;font-size:11px;text-transform:uppercase;letter-spacing:.09em;color:#737e94}.sidebar .count{font-size:12px;color:var(--muted)}main{min-width:0;max-width:1100px}.intro{padding:12px 4px 26px}.eyebrow{font-size:11px;text-transform:uppercase;letter-spacing:.12em;font-weight:800;color:var(--brand)}h1{font-size:clamp(28px,4vw,46px);line-height:1.12;margin:12px 0}h2{font-size:26px;line-height:1.25;margin:10px 0 16px}h3{font-size:18px;margin:26px 0 12px}h4{font-size:15px;margin:4px 0 8px}p{margin:8px 0 14px}.lede{font-size:18px;color:var(--muted);max-width:780px}.notice{border:1px solid #e7c780;background:#fff5dd;color:#68460a;border-radius:14px;padding:16px 20px;margin:0 0 20px}.notice strong{display:block}.notice p{margin:5px 0 0}.section{scroll-margin-top:86px;background:white;border:1px solid var(--border);border-radius:20px;padding:clamp(18px,3vw,32px);margin-bottom:24px;box-shadow:0 4px 18px #26385a05}.section[hidden],nav a[hidden]{display:none}.section-head{display:flex;justify-content:space-between;gap:14px;align-items:start}.tag{display:inline-block;font-size:11px;line-height:1.4;padding:5px 9px;border-radius:30px;background:#eef0ff;color:#4c43b6;font-weight:750}.tag.amber{background:#fff0cf;color:#805706}.tag.green{background:#e3f5ee;color:#126349}.route{font-size:13px;color:var(--muted);margin-bottom:20px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.card{border:1px solid var(--border);border-radius:13px;padding:17px;background:#fafbfe;min-width:0}.card p{font-size:14px;margin:0}.symbol{display:block;font-size:25px;color:var(--brand);font-weight:800;margin-bottom:8px}.screen{border:1px solid #cdd5e5;border-radius:14px;overflow:hidden;background:#f7f9ff;margin:18px 0}.screen-bar{padding:12px 16px;background:#edf0f8;border-bottom:1px solid #dce2ef;display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px}.screen-bar strong{margin-right:auto}.screen-body{padding:18px}.caption{font-size:12px;color:var(--muted);margin:8px 0}.chips{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.pill{display:inline-block;border:1px solid #d6ddeb;border-radius:8px;background:white;padding:5px 9px;font-size:12px}.pill.active{background:var(--brand);color:white;border-color:var(--brand)}.block{border-radius:12px;padding:16px;background:#e3e0ff;border-left:5px solid #7761d9;color:#342961;min-width:0}.block.sky{background:#dceffc;border-color:#52a3db;color:#215777}.block.green{background:#dcf3e7;border-color:#36a878;color:#21553f}.block.amber{background:#fff0cf;border-color:#dca638;color:#775716}.block strong{display:block}.block small{display:block;margin:6px 0}.number{display:inline-flex;width:25px;height:25px;border-radius:50%;background:var(--brand);color:white;align-items:center;justify-content:center;font-size:12px;font-weight:800;margin-right:6px}.legend{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:14px 0}.legend p{font-size:13px;margin:0}.steps{counter-reset:step;list-style:none;padding:0;display:grid;gap:10px;margin:20px 0}.steps li{position:relative;padding:12px 14px 12px 47px;background:#f3f5fc;border-radius:11px;font-size:14px}.steps li:before{counter-increment:step;content:counter(step);position:absolute;left:12px;top:12px;width:24px;height:24px;background:var(--brand);color:white;text-align:center;border-radius:50%;font-weight:800}.try{border-left:4px solid #2a9d79;background:#effaf5;padding:13px 17px;border-radius:0 12px 12px 0;font-size:14px;margin-top:20px}.try strong{color:#14634c}.tip{background:#eef2ff;padding:13px 17px;border-radius:12px;font-size:14px;margin:16px 0}.warning{background:#fff5e2;padding:13px 17px;border-radius:12px;font-size:14px;margin:16px 0;color:#744d0d}kbd,code{font-family:ui-monospace,Consolas,monospace;background:#eef0f7;border:1px solid #d5dbea;border-radius:5px;padding:2px 6px;font-size:.87em;color:#2c3650}kbd{white-space:nowrap;box-shadow:0 2px 0 #d5dbea}pre{overflow:auto;background:#eef0f7;padding:16px;border-radius:10px;font-size:13px}pre code{padding:0;border:0}.table-wrap{overflow:auto;margin:16px 0;border:1px solid var(--border);border-radius:12px}table{border-collapse:collapse;width:100%;background:white;font-size:14px}th,td{text-align:left;padding:12px 14px;border-bottom:1px solid #e5e9f2;vertical-align:top}th{background:#f0f3fa;font-size:12px;color:#4b5a73}tr:last-child td{border-bottom:0}td.sample{min-width:140px}.sample h4{font-size:20px}.sample blockquote{margin:0;border-left:3px solid #8879e8;padding-left:10px}.sample hr{border:0;border-top:2px solid #bdc7db}.sample ul,.sample ol{padding-left:20px;margin:0}.separator-arrow{text-align:center;color:var(--brand);font-size:26px}.flow{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.flow .card{flex:1;min-width:150px}.flow .arrow{font-size:25px;color:var(--brand)}details{border:1px solid var(--border);border-radius:12px;margin:14px 0;padding:12px 16px}summary{font-weight:750;cursor:pointer;font-size:14px}details ul{font-size:14px;padding-left:20px}.editor-frame{width:100%;height:560px;border:1px solid #cdd5e5;border-radius:14px;background:white}.interactive{padding:20px;border:1px solid #d7d2ff;background:#f7f6ff;border-radius:14px;margin:18px 0}.interactive label{font-size:14px;font-weight:700}.interactive input[type=number]{width:85px;margin:4px 12px 4px 0;padding:7px;border:1px solid #b6c1d8;border-radius:8px}.result{font-size:26px;color:var(--brand);font-weight:800}.progress{height:10px;background:#e3e7f2;border-radius:8px;overflow:hidden}.progress span{display:block;height:100%;background:#36a878}.no-results{padding:20px;background:white;border-radius:12px}.section-links{display:flex;gap:8px;flex-wrap:wrap}.section-links a{font-size:13px;background:#eef0ff;padding:7px 10px;border-radius:8px;text-decoration:none}.foot{font-size:12px;color:var(--muted);padding:10px 4px 30px}.skip{position:fixed;top:-80px;left:12px;z-index:50;padding:12px;background:white}.skip:focus{top:12px}.mock-menu{background:white;border:1px solid #dce2ef;border-radius:12px;padding:8px;max-width:310px;box-shadow:0 8px 20px #2f405c12}.mock-menu div{padding:6px 10px;font-size:13px;border-radius:7px}.mock-menu div:nth-child(2){background:#eef0ff}.check{color:#146b50;font-weight:800}.muted{color:var(--muted)}.swatch{display:inline-block;width:18px;height:18px;border-radius:5px;vertical-align:middle;margin-right:5px}.toolbar{display:flex;flex-wrap:wrap;gap:7px}.tool{min-width:37px;text-align:center;border:1px solid #ccd5e5;border-radius:8px;background:white;padding:6px 9px;font-size:14px}.mobile-only{display:none}@media(max-width:1050px){.layout{grid-template-columns:235px minmax(0,1fr);gap:16px;padding:18px}.grid.three{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:760px){.top{padding:10px 14px}.top-actions>a{display:none}.menu-button{display:block}.layout{display:block;padding:14px}.sidebar{display:none;position:fixed;top:64px;left:12px;right:12px;max-height:calc(100dvh - 80px);z-index:30;box-shadow:0 10px 60px #17213b40}.sidebar.open{display:block}.grid,.grid.three,.legend{grid-template-columns:1fr}.section{padding:20px 16px}.section-head{display:block}.section-head .tag{margin-bottom:10px}h2{font-size:23px}.editor-frame{height:680px}.lede{font-size:16px}.mobile-only{display:block}.flow .arrow{display:none}}@media(prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}@media print{body{background:white}.top,.sidebar,.try button,.editor-frame,.interactive button,.skip{display:none!important}.layout{display:block;padding:0}.section[hidden]{display:block}.section{box-shadow:none;border:0;border-bottom:1px solid #ddd;border-radius:0;margin:0;padding:18px 0;break-inside:auto}.card,.screen,.table-wrap,.try,.notice{break-inside:avoid}h2,h3{break-after:avoid}main{max-width:none}.intro{padding:0}.grid.three{grid-template-columns:repeat(3,1fr)}a{color:inherit}.notice{print-color-adjust:exact}.print-editor-note{display:block!important}}
button[aria-pressed="true"] { background: #5147dc; color: white; border-color: #5147dc; }
@media (max-width: 760px) {
  .top .brand { font-size: 14px; }
  .top .brand span { display: block; font-size: 12px; }
  .top button { font-size: 11px; white-space: nowrap; padding: 9px; }
}
@media print {
  .interactive button { display: inline-block !important; border: 0; padding: 0; background: transparent; color: inherit; text-align: left; }
}