:root{--bg:#07151b;--panel:#10252d;--panel2:#15323b;--ink:#f5f0e7;--muted:#b8c6c8;--gold:#d2a75e;--teal:#48aaa1;--line:#ffffff18;--danger:#e4a5a5}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 50% -10%,#214853 0,#07151b 42%);color:var(--ink);font-family:Tahoma,Arial,sans-serif;line-height:1.85}
a{color:inherit}.skip{position:absolute;right:-9999px}.skip:focus{right:12px;top:12px;background:#fff;color:#000;padding:10px;z-index:9}
.wrap{width:min(1180px,calc(100% - 32px));margin:auto}.top{position:sticky;top:0;z-index:8;background:#07151be8;backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav{min-height:68px;display:flex;align-items:center;gap:16px}.brand{font-weight:900;text-decoration:none;font-size:21px}.brand span{color:var(--gold)}
.navlinks{margin-inline-start:auto;display:flex;gap:9px;flex-wrap:wrap}.navlinks a{text-decoration:none;color:var(--muted);padding:7px 9px;border-radius:9px}.navlinks a:hover{background:var(--panel);color:#fff}
.hero{padding:72px 0 44px;text-align:center}.eyebrow{color:var(--gold);font-weight:700}.hero h1{font-size:clamp(42px,8vw,82px);line-height:1.15;margin:12px auto;max-width:1000px}.lead{font-size:clamp(18px,2.4vw,24px);color:var(--muted);max-width:860px;margin:18px auto}
.searchbox{max-width:820px;margin:34px auto 12px;position:relative}.searchbox input{width:100%;font-size:19px;padding:18px 20px;border-radius:18px;border:1px solid #48aaa177;background:#fff;color:#111;outline:0}.searchbox input:focus{box-shadow:0 0 0 5px #48aaa122}
.metrics,.grid,.cards{display:grid;gap:16px}.metrics{grid-template-columns:repeat(4,1fr);margin-top:30px}.metric,.card,.panel{background:#10252de8;border:1px solid var(--line);border-radius:18px}.metric{padding:19px}.metric strong{display:block;font-size:30px;color:var(--gold)}
.section{padding:36px 0}.section h2{font-size:clamp(28px,4vw,44px);margin:0 0 10px}.section-intro{color:var(--muted);max-width:820px}
.filters{display:flex;gap:8px;overflow:auto;padding:12px 0 20px}.filter{white-space:nowrap;border:1px solid #ffffff22;background:var(--panel);color:var(--ink);padding:9px 13px;border-radius:999px;cursor:pointer}.filter.active,.filter:hover{background:var(--gold);color:#07151b}
.grid{grid-template-columns:repeat(3,1fr)}.card{padding:20px;text-decoration:none;transition:.18s}.card:hover{transform:translateY(-3px);border-color:#d2a75e88}.card small{color:var(--teal)}.card h3{margin:5px 0;font-size:21px}.en{direction:ltr;text-align:right;color:var(--gold);font-family:Arial,sans-serif}.desc{color:var(--muted);margin:9px 0}.tag{display:inline-block;color:var(--teal);font-size:13px}
.actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:15px}.btn{border:0;border-radius:11px;padding:10px 14px;background:var(--gold);color:#07151b;text-decoration:none;font-weight:800;cursor:pointer}.btn.alt{background:var(--teal);color:white}.btn.ghost{background:#ffffff10;color:white;border:1px solid var(--line)}
.panel{padding:26px;margin:18px 0}.content{max-width:880px;margin:auto;padding:34px 0 70px}.content h1{font-size:clamp(38px,6vw,64px);line-height:1.25;margin:10px 0}.content h2{font-size:28px;margin-top:34px;color:var(--gold)}.crumbs{color:var(--muted);font-size:14px}.definition{font-size:22px;border-right:4px solid var(--gold);padding:12px 20px;background:#10252d;border-radius:12px}
.related{grid-template-columns:repeat(2,1fr)}.notice{border:1px solid #d2a75e55;background:#d2a75e10;padding:16px;border-radius:12px;color:#e8dfce}
footer{border-top:1px solid var(--line);padding:34px 0;color:var(--muted);margin-top:40px}.footergrid{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.footerlinks{display:flex;gap:14px;flex-wrap:wrap}
.hidden{display:none!important}.empty{text-align:center;color:var(--muted);padding:40px}.favorite{float:left;background:transparent;border:1px solid var(--line);color:var(--ink);border-radius:10px;padding:6px 9px;cursor:pointer}.favorite.on{background:var(--gold);color:#07151b}
@media(max-width:850px){.grid{grid-template-columns:repeat(2,1fr)}.metrics{grid-template-columns:repeat(2,1fr)}.navlinks{display:none}}
@media(max-width:560px){.grid,.related{grid-template-columns:1fr}.hero{padding-top:46px}.wrap{width:min(100% - 22px,1180px)}}

.deep-content details{background:#10252d;border:1px solid var(--line);border-radius:12px;margin:10px 0;padding:12px 15px}.deep-content summary{cursor:pointer;font-weight:800;color:var(--gold)}
.alpha-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(90px,1fr));gap:10px}.alpha{display:flex;min-height:82px;align-items:center;justify-content:center;background:var(--panel);border:1px solid var(--line);border-radius:14px;text-decoration:none;font-size:30px;font-weight:900}.alpha:hover{border-color:var(--gold);transform:translateY(-2px)}
.tool-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.tool-card{background:linear-gradient(145deg,#10252d,#15323b);border:1px solid var(--line);border-radius:18px;padding:24px;text-decoration:none}.tool-card:hover{border-color:var(--gold)}
.control{width:100%;padding:13px 14px;border-radius:11px;border:1px solid #ffffff22;background:#fff;color:#111;font-size:16px}.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:20px}.result-panel{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:20px;min-height:220px}.quiz-option{display:block;width:100%;text-align:right;margin:8px 0;padding:12px;border-radius:11px;border:1px solid var(--line);background:var(--panel2);color:var(--ink);cursor:pointer}.quiz-option.correct{outline:2px solid #61c99a}.quiz-option.wrong{outline:2px solid #e49a9a}.bar{height:13px;background:#ffffff15;border-radius:99px;overflow:hidden}.bar>span{display:block;height:100%;background:var(--teal)}
.cite-code{direction:ltr;text-align:left;white-space:pre-wrap;background:#020a0e;border:1px solid var(--line);padding:14px;border-radius:12px;color:#d9e8e7}.source-list li{margin:14px 0}.source-list a{color:var(--teal)}
@media(max-width:700px){.tool-grid,.compare-grid{grid-template-columns:1fr}}
@media print{.top,footer,.actions,.favorite,.navlinks{display:none!important}body{background:white;color:black}.panel,.card,.definition{border:1px solid #bbb;background:white;color:black}.content{max-width:none}.en,.tag,h2{color:black}}