/* Служебные страницы сайта: лаборатории, курсы, поиск, о проекте, 404. Шапка — в /site-nav.css. */
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:#070c17;color:#e7f0fb;font-family:Inter,'Segoe UI',system-ui,sans-serif;line-height:1.55;background-image:radial-gradient(ellipse at 80% 0,#21355670,transparent 55%);min-height:100vh}
header,main,footer{max-width:1200px;margin:auto}
header{padding:16px max(4%,16px);border-bottom:1px solid #53698533}
.brand{color:#fff;text-decoration:none;letter-spacing:2px;font-weight:750;font-size:19px}
.brand span{font-size:11px;color:#a8c8e9;margin-left:8px}
main{padding:0 max(4%,16px) 48px}
a{color:#b6dfff}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid #b6dfff;outline-offset:2px}
.sp-crumbs{display:flex;flex-wrap:wrap;gap:6px 10px;margin-top:20px;font-size:13px;color:#8ea6bd}
.sp-crumbs a{color:#bdd1e5;text-decoration:none}
.sp-crumbs a:hover{text-decoration:underline}
.sp-eyebrow{color:#9ab5d0;font:12px/1.4 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;letter-spacing:2px;text-transform:uppercase;margin-top:22px}
h1{font-weight:500;font-size:clamp(28px,4vw,42px);letter-spacing:-1px;line-height:1.15;margin:10px 0 12px}
h2{font-weight:500;font-size:clamp(21px,2.6vw,27px);letter-spacing:-.4px;margin:40px 0 12px}
h3{font-size:17px;font-weight:600;margin:0 0 6px}
.sp-lead{color:#b0c3d6;font-size:16px;max-width:820px;margin:0}
.sp-text{max-width:820px;color:#c9d8e6;font-size:15px}
.sp-text li{margin:6px 0}
.sp-lead+.sp-grid{margin-top:24px}
.sp-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px;margin:0;padding:0;list-style:none}
.sp-card{display:block;height:100%;padding:16px 18px;border:1px solid #59779945;border-radius:14px;background:#0b1322;color:#e7f0fb;text-decoration:none;transition:border-color .15s,background .15s}
.sp-card:hover{border-color:#9bbede;background:#0f1b2e}
.sp-card strong{display:block;font-size:16px;font-weight:600;margin-bottom:4px}
.sp-card span{display:block;color:#9fb4c9;font-size:14px}
.sp-card .sp-meta{margin-top:10px;color:#b6dfff;font:12px/1.4 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;letter-spacing:1px}
.sp-toc{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 0;padding:0;list-style:none}
.sp-toc a{display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border:1px solid #59779955;border-radius:999px;color:#c8dbee;text-decoration:none;font-size:14px}
.sp-toc a:hover{border-color:#9bbede;color:#fff}
.sp-note{margin-top:28px;padding:14px 16px;border-left:3px solid #6f93b8;background:#0b1322;border-radius:0 10px 10px 0;color:#b0c3d6;font-size:14px;max-width:820px}
.sp-search{display:flex;gap:8px;max-width:640px;margin:22px 0 8px}
.sp-search input{flex:1 1 auto;min-width:0;min-height:48px;padding:0 14px;border:1px solid #6685a6;border-radius:12px;background:#0b1322;color:#fff;font:16px Inter,'Segoe UI',system-ui,sans-serif}
.sp-search input::placeholder{color:#7f97ae}
.sp-search button{flex:0 0 auto;min-height:48px;min-width:48px;padding:0 18px;border:1px solid #9bbede;border-radius:12px;background:#b2cee7;color:#101f30;font:600 15px Inter,'Segoe UI',system-ui,sans-serif;cursor:pointer}
.sp-search button:hover{background:#cfe4f6}
.sp-status{color:#9fb4c9;font-size:14px;min-height:22px;margin:6px 0 14px}
.sp-results{list-style:none;margin:0;padding:0;display:grid;gap:10px;max-width:820px}
.sp-results a{display:block;padding:14px 16px;border:1px solid #59779945;border-radius:12px;background:#0b1322;text-decoration:none;color:#e7f0fb}
.sp-results a:hover{border-color:#9bbede}
.sp-results strong{display:block;font-size:16px;font-weight:600}
.sp-results span{display:block;color:#9fb4c9;font-size:14px;margin-top:3px}
.sp-results small{display:block;color:#7895b2;font:12px ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;margin-top:6px;overflow-wrap:anywhere}
.sp-results mark{background:#2d4f73;color:#fff;border-radius:3px;padding:0 2px}
.sp-big{font:600 clamp(72px,14vw,140px)/1 Inter,'Segoe UI',system-ui,sans-serif;color:#25405f;letter-spacing:-4px;margin-top:24px}
footer{padding:22px max(4%,16px);border-top:1px solid #59779933;display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;color:#8098b0;font-size:13px}
footer a{color:inherit}
.embedded header,.embedded footer{display:none}
@media (max-width:700px){h2{margin-top:32px}.sp-grid{grid-template-columns:1fr}.sp-card{padding:14px 16px}}