.sk{--sk-ink:#183b43;--sk-gold:#e3c88a;--sk-line:#d4ded9;--sk-paper:#fffef8;color:var(--sk-ink);width:100%;min-width:0}.sk *{box-sizing:border-box}.sk h1,.sk h2,.sk h3,.sk h4,.sk p{margin-top:0}.sk-hero{display:flex;align-items:center;justify-content:space-between;gap:20px;position:relative;overflow:hidden;padding:32px;border-radius:24px;background:linear-gradient(120deg,#16333f,#345b61);color:#fff9e9;margin-bottom:22px}.sk-hero h1{font-size:clamp(30px,4vw,46px);line-height:1.1;margin:10px 0 14px}.sk-hero p{max-width:650px;line-height:1.6;margin-bottom:0;color:#e5eeea}.sk-eyebrow{font-size:11px;font-weight:800;letter-spacing:.13em}.sk-mark{font-size:65px;opacity:.8;transform:rotate(-15deg)}.sk-toolbar,.sk-tabs,.sk-files,.sk-reactions,.sk-checks{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.sk-toolbar{margin-bottom:20px}.sk-tabs{gap:6px}.sk-btn{appearance:none;border:1px solid #c4d1c9;background:#f8faf4;color:#183b43;border-radius:12px;min-height:44px;padding:10px 15px;font:inherit;font-size:14px;cursor:pointer;line-height:1.35}.sk-btn:hover{background:#edf2e8}.sk-btn[aria-pressed=true],.sk-primary{background:#e6d09d;border-color:#b69a5b;color:#183b43;font-weight:750}.sk-btn:disabled{opacity:.6;cursor:default}.sk-btn:focus-visible,.sk-card:focus-visible,.sk input:focus-visible,.sk textarea:focus-visible,.sk select:focus-visible{outline:3px solid #bd8d32;outline-offset:3px}.sk label{display:grid;gap:7px;font-size:14px;font-weight:700;margin:0 0 16px;min-width:0}.sk-search{margin:0!important;flex:1;min-width:180px!important;max-width:320px}.sk input:not([type=checkbox]),.sk textarea,.sk select{width:100%;min-width:0;max-width:100%;padding:12px;border:1px solid #c9d4cb;border-radius:12px;background:#fffef8;color:#183b43;font:inherit;font-weight:400;line-height:1.5}.sk textarea{resize:vertical}.sk input[type=checkbox]{width:20px;height:20px;accent-color:#8b6b30}.sk-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr));gap:20px}.sk-card{padding:0;border:1px solid var(--sk-line);border-radius:20px;overflow:hidden;text-align:left;background:var(--sk-paper);color:var(--sk-ink);font:inherit;cursor:pointer;display:flex;flex-direction:column;max-width:560px;transition:transform .15s,box-shadow .15s}.sk-card:hover{transform:translateY(-3px);box-shadow:0 12px 26px #183b4312}.sk-cover{aspect-ratio:16/7;background:radial-gradient(circle at 85% 20%,#e3c88a55,transparent 35%),linear-gradient(125deg,#1b3c48,#487077);display:flex;flex-direction:column;justify-content:space-between;padding:22px;color:#f9e4b6}.sk-cover>span{font-size:34px}.sk-cover small{font-size:10px;font-weight:800;letter-spacing:.12em}.sk-homework{background:radial-gradient(circle at 85% 20%,#fff7dca0,transparent 40%),linear-gradient(125deg,#b89552,#ead8a4);color:#183b43}.sk-card-body{padding:22px;flex:1;display:flex;flex-direction:column}.sk-card h2{font-size:21px;line-height:1.3;margin:10px 0}.sk-card p{font-size:14px;line-height:1.6;white-space:pre-line}.sk-card footer{display:flex;gap:15px;flex-wrap:wrap;font-size:12px;margin-top:auto;padding-top:12px;border-top:1px solid #e3e8df}.sk-meta{font-size:12px;color:#647a71}.sk-due{font-weight:750;color:#74571f}.sk-empty{text-align:center;background:var(--sk-paper);border:1px dashed #c8d4c8;border-radius:22px;padding:50px 24px}.sk-empty>span{font-size:40px;display:block;margin-bottom:18px}.sk-empty p{max-width:540px;margin:0 auto 20px;line-height:1.6}.sk-detail{background:var(--sk-paper);border:1px solid var(--sk-line);border-radius:22px;padding:28px;max-width:1000px}.sk-detail>h2{font-size:clamp(23px,3vw,32px);line-height:1.3;margin:10px 0 20px}.sk-player{width:100%;aspect-ratio:16/9;background:#102a34;border-radius:16px;overflow:hidden;margin:18px 0 8px}.sk-player iframe{display:block;width:100%;height:100%;border:0}.sk-hint{font-size:12px;color:#667b70;line-height:1.6;margin:9px 0 18px}.sk-description{white-space:pre-wrap;overflow-wrap:anywhere;font-size:16px;line-height:1.8;margin:22px 0}.sk-section{border-top:1px solid #dce4d8;padding-top:23px;margin-top:24px}.sk-section h3{font-size:20px;margin-bottom:15px}.sk-section small{font-size:12px}.sk-task{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:15px;padding:22px;border-radius:16px;background:#eef2e6;margin-top:24px}.sk-task p{font-size:13px;line-height:1.6;max-width:600px;margin-bottom:0}.sk-task h3{margin-bottom:8px}.sk-reactions{margin:20px 0}.sk-poll-options{display:grid;gap:10px}.sk-poll-options button{text-align:left;display:flex;align-items:center;justify-content:space-between;gap:12px}.sk-comment{border:1px solid #dce4d8;border-radius:14px;padding:16px;margin-bottom:12px;background:white;overflow-wrap:anywhere}.sk-comment header{display:flex;align-items:center;gap:10px;justify-content:space-between}.sk-comment time{font-size:11px;color:#6a7c72}.sk-comment p{white-space:pre-wrap;line-height:1.6;margin:12px 0}.sk-comment button{font-size:11px;padding:6px 10px;min-height:36px}.sk-hidden{opacity:.55;background:#f1efe9}.sk-reports{padding:16px;border-radius:12px;background:#fff1df;margin-bottom:16px}.sk-form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 18px}.sk fieldset{border:1px solid #cbd7cb;border-radius:14px;margin:20px 0;padding:18px}.sk legend{padding:0 7px;font-weight:750}.sk .sk-check{display:flex;align-items:center;gap:9px;font-weight:500}.sk-error{padding:14px;background:#fff1df;border-radius:12px;color:#79472a}.bottom:has([data-tab=skill]){grid-template-columns:repeat(7,minmax(0,1fr))!important}.bottom [data-tab=skill]{font-size:10px!important}.sk-report-form{margin-top:12px}
@media(max-width:650px){.sk-hero{padding:24px 20px;border-radius:18px}.sk-hero p{font-size:13px}.sk-mark{display:none}.sk-detail{padding:18px;border-radius:16px}.sk-form-grid{grid-template-columns:1fr}.sk-toolbar{align-items:stretch}.sk-search{max-width:none}.sk-tabs{gap:5px}.sk-tabs .sk-btn{font-size:12px;padding:9px 11px}.sk-player{border-radius:10px}.sk-description{font-size:14px}.sk-section{margin-top:20px;padding-top:20px}.sk-comment header{align-items:flex-start}.sk-task{padding:16px}.sk-card{max-width:none}}

.bottom:has([data-tab=skill]) [data-tab=recommendations]{overflow-wrap:anywhere}

.sk .sk-quiz-option{display:flex;gap:12px;align-items:flex-start;font-weight:500;padding:14px;border:1px solid #cbd6c9;border-radius:12px;background:#fffef8;margin:0}.sk-quiz-option input{flex:none;margin-top:2px}.sk-quiz-option strong{display:block;font-size:12px;margin-top:5px}.sk .sk-quiz-option.sk-correct{background:#edf6e7;border-color:#86a575}.sk .sk-quiz-option.sk-incorrect{background:#fff0e8;border-color:#cda089}.sk-quiz-result{padding:18px;background:#f0f4e8;border-radius:14px;margin-top:18px}.sk-quiz-result .sk-description{margin:8px 0;font-size:14px}.sk #sk-quiz-settings[hidden]{display:none}

.sk-play{width:100%;height:100%;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:12px;background:radial-gradient(circle at 80% 20%,#d4ba7a22,transparent 40%),linear-gradient(120deg,#173540,#355f65);color:#f5e2b5;border:0;font:inherit;cursor:pointer;padding:22px}.sk-play>span{display:grid;place-items:center;width:64px;height:64px;border:1px solid #e3c88a88;border-radius:50%;font-size:26px;padding-left:4px}.sk-play small{font-size:12px;color:#e0e9df}.sk-play:focus-visible{outline:3px solid #e3c88a;outline-offset:-4px}

/* Personalized coach cover for homework cards only. */
.sk-cover.sk-coach-cover{width:100%;aspect-ratio:16/9;position:relative;background:linear-gradient(90deg,#07272b55,transparent 65%),var(--sk-coach-image,url('coach-homework-20261016.webp')) center/cover no-repeat;color:#fff8dd;padding:22px}.sk-cover.sk-coach-cover>.sk-coach-title{font-size:clamp(22px,3vw,29px);line-height:1.12;font-weight:850;letter-spacing:-.035em;text-shadow:0 2px 9px #05202288;max-width:48%;margin-top:8px}.sk-coach-cover small{width:max-content;max-width:100%;background:#0a292cdd;border:1px solid #ddc38c66;border-radius:7px;padding:6px 8px;font-size:9px;line-height:1.3;letter-spacing:.07em;color:#f8e6bc}.sk-card:hover .sk-coach-cover{filter:brightness(1.04)}

/* Photographic coach invitation on the lazy player; VK loads only on click. */
.sk-play{background:linear-gradient(90deg,#06232335,transparent 65%),url('coach-player-preview.webp') center/cover no-repeat;color:#fff;padding:16px 46% 16px 16px;gap:8px;text-shadow:0 2px 7px #0009}.sk-play>span{width:58px;height:58px;min-height:58px;background:#102a34bb;border:2px solid #fff9;box-shadow:0 4px 20px #0005;backdrop-filter:blur(4px);font-size:25px}.sk-play strong{font-size:clamp(13px,2vw,19px);line-height:1.2}.sk-play small{color:#fff;font-size:clamp(10px,1.2vw,12px);line-height:1.25;max-width:180px}.sk-play:hover>span{background:#183b43ee;transform:scale(1.06)}

/* Separate answer submission from options and show admin participation. */
.sk #sk-quiz-form>button[type=submit]{display:block;margin-top:24px;min-height:48px;min-width:180px}.sk-participation-counts{display:flex;gap:12px 22px;flex-wrap:wrap;line-height:1.5}.sk-participation-tools{margin-top:20px;align-items:flex-end}.sk-participation-tools>label{margin-bottom:0}.sk-participant{padding:15px 0;border-top:1px solid #dce4d8;overflow-wrap:anywhere}.sk-participant>div{display:flex;gap:10px;justify-content:space-between;align-items:center;flex-wrap:wrap}.sk-participant-status{font-size:12px;border-radius:8px;background:#f0eee6;padding:5px 9px}.sk-participant-status.sk-answered{background:#e6f1df;color:#315c35}.sk-participant p{margin:9px 0 5px;font-size:14px;line-height:1.5}.sk-participant small{font-size:11px;color:#667b70}.sk #sk-participation summary{cursor:pointer;padding:12px 0;font-weight:700;min-height:44px}

.sk-activity-student{border:1px solid #dce4d8;border-radius:14px;padding:18px;margin:14px 0;background:#fff}.sk-activity-student h3{margin-bottom:8px}.sk-activity-student dl{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:12px;margin-bottom:0}.sk-activity-student dl>div{background:#f2f5ed;border-radius:10px;padding:10px}.sk-activity-student dt{font-size:11px;line-height:1.4;color:#61756a}.sk-activity-student dd{font-size:20px;font-weight:750;margin:6px 0 0}