:root{--bg:#e9f3fb;--surface:rgba(255,255,255,.58);--surface-solid:#fff;--ink:#132b45;--muted:#5b728b;--line:rgba(255,255,255,.72);--blue:#1577d5;--blue2:#5faeff;--shadow:0 24px 65px rgba(34,82,121,.15);--glow:rgba(107,190,255,.42)}:root[data-theme="dark"]{--bg:#091522;--surface:rgba(23,43,62,.58);--surface-solid:#122237;--ink:#ecf7ff;--muted:#acc2d4;--line:rgba(197,229,255,.16);--blue:#68b7ff;--blue2:#2c7cce;--shadow:0 24px 65px rgba(0,0,0,.32);--glow:rgba(56,126,199,.29)}body{color:var(--ink);background:radial-gradient(circle at 12% 5%,var(--glow),transparent 26%),radial-gradient(circle at 88% 2%,rgba(157,224,221,.35),transparent 24%),var(--bg);transition:background .45s,color .35s}.topbar{background:color-mix(in srgb,var(--surface) 84%,transparent);border-color:var(--line);backdrop-filter:blur(22px) saturate(150%);box-shadow:0 9px 28px rgba(30,70,105,.07)}.brand{color:var(--ink)}.top-actions{align-items:center;gap:8px}.icon-toggle,.switch-control,.reset-control{border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:999px;backdrop-filter:blur(14px);transition:transform .2s,background .2s,border-color .2s}.icon-toggle:hover,.switch-control:hover{transform:translateY(-1px);background:var(--surface-solid)}.icon-toggle{width:38px;height:38px;font-size:20px}.switch-control{height:38px;padding:4px 11px 4px 5px;display:flex;align-items:center;gap:7px}.switch-track{width:31px;height:19px;border-radius:99px;background:#b4c4d2;padding:2px;transition:.25s}.switch-track i{display:block;width:15px;height:15px;border-radius:50%;background:#fff;box-shadow:0 1px 3px #0003;transition:transform .25s}.switch-control.on .switch-track{background:var(--blue)}.switch-control.on .switch-track i{transform:translateX(12px)}.switch-label{font-weight:750;font-size:13px}.reset-control{margin-left:8px;color:#b23d4c;padding:9px 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0;font-size:13px}.stats{background:transparent}.stat{background:var(--surface);border-color:var(--line);box-shadow:0 8px 25px rgba(26,75,112,.07);backdrop-filter:blur(16px)}.action-card{position:relative;overflow:hidden;border-color:var(--line)!important;background:var(--surface)!important;color:var(--ink)}.action-card:before{content:"";position:absolute;inset:0;background:linear-gradient(125deg,#fff5,transparent 48%);pointer-events:none}.action-card:hover{border-color:color-mix(in srgb,var(--blue) 38%,var(--line))!important}.icon{display:grid;place-items:center;width:44px;height:44px;border-radius:14px;background:color-mix(in srgb,var(--blue) 12%,transparent);color:var(--blue)}.icon svg{width:25px;height:25px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.card-arrow{position:absolute;right:20px;bottom:16px;font-size:22px;color:var(--blue)}.legend{padding:15px 18px;border-radius:15px;border:1px solid var(--line)}.mark.learned{background:#39ba81}.mark.review{background:#e8ae36}.mark.correct{background:#e8ae36}.mark.wrong{background:#e5505d}.booking{display:flex;justify-content:space-between;align-items:center;gap:22px;margin-top:24px;border-radius:22px;padding:29px 32px}.booking h2{margin:7px 0;font-size:25px}.booking p{color:var(--muted);margin:0;line-height:1.5}.booking-button{white-space:nowrap;text-decoration:none;margin:0}.question-card,.result-card,.updates-card{background:var(--surface);border-color:var(--line);backdrop-filter:blur(24px);box-shadow:var(--shadow)}.answer{background:color-mix(in srgb,var(--surface-solid) 76%,transparent);border-color:var(--line);color:var(--ink);backdrop-filter:blur(12px)}.answer:hover:not(:disabled){background:color-mix(in srgb,var(--blue) 8%,var(--surface-solid));border-color:var(--blue)}.answer .ru,.translation{color:var(--muted)}.question-status{background:color-mix(in srgb,var(--blue) 10%,var(--surface-solid));color:var(--blue)}.map-dot{background:var(--surface-solid);border-color:var(--line)}.map-dot.new{background:color-mix(in srgb,var(--surface-solid) 85%,transparent)}.map-dot.correct,.map-dot.review{background:#fff4ce;border-color:#e6b64b;color:#785700}.map-dot.learned{background:#ddf8eb;border-color:#5fbd8d;color:#1f704d}.map-dot.wrong{background:#ffe3e6;border-color:#ed8f98;color:#9a313a}:root[data-theme="dark"] .map-dot.correct,:root[data-theme="dark"] .map-dot.review{background:#594419;color:#ffe4a0}:root[data-theme="dark"] .map-dot.learned{background:#153f31;color:#95f3c6}:root[data-theme="dark"] .map-dot.wrong{background:#552a31;color:#ffb9c1}.notice{background:color-mix(in srgb,#ffefc9 62%,var(--surface-solid));border-color:#edce87}@media(max-width:720px){.topbar{gap:8px}.reset-control{display:none}.switch-label{display:none}.switch-control{padding:4px}.hero{min-height:0}.hero-orbit{margin-top:30px}.booking{align-items:flex-start;flex-direction:column;padding:25px}.booking-button{width:100%;text-align:center}.top-actions{gap:4px}}