:root{
  --ink:#0b0b0d;
  --ink-soft:#1d1d20;
  --muted:#707278;
  --line:#e6e6e4;
  --line-dark:#c9c9c6;
  --paper:#fff;
  --wash:#f6f6f4;
  --wash-strong:#efefec;
  --danger:#8b0000;
  --success:#0b0b0d;
  --radius:24px;
  --shadow:0 24px 70px rgba(0,0,0,.08);
  --shadow-soft:0 14px 40px rgba(0,0,0,.06);
  --mobile-header-height:72px;
  --mobile-bottom-height:78px;
}
*{box-sizing:border-box}
html{min-height:100%;background:var(--wash);scroll-behavior:smooth}
body{
  min-height:100%;
  margin:0;
  color:var(--ink);
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:
    radial-gradient(circle at 86% 12%,transparent 0 118px,rgba(0,0,0,.065) 119px 120px,transparent 121px 100%),
    radial-gradient(circle at 94% 18%,transparent 0 190px,rgba(0,0,0,.04) 191px 192px,transparent 193px 100%),
    linear-gradient(135deg,#fbfbfa 0%,#f3f3f0 100%);
  -webkit-font-smoothing:antialiased;
  text-rendering:geometricPrecision;
}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{appearance:none}
button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid rgba(0,0,0,.22);outline-offset:3px}
[hidden]{display:none!important}
.muted{color:var(--muted)}
.logo,.brand-logo,.hero-logo,.app-logo{object-fit:contain;mix-blend-mode:multiply}

.btn,.primary-btn,.ghost-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:52px;
  border:1px solid #111;
  border-radius:16px;
  padding:0 20px;
  background:#111;
  color:#fff;
  font-weight:850;
  cursor:pointer;
  box-shadow:0 14px 36px rgba(0,0,0,.16);
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn:hover,.primary-btn:hover,.ghost-btn:hover{transform:translateY(-1px);box-shadow:0 18px 44px rgba(0,0,0,.2)}
.btn.completed{background:#fff;color:#111;box-shadow:none}
.btn.completed:before{content:"✓";display:grid;place-items:center;width:22px;height:22px;border:1px solid currentColor;border-radius:999px}
.ghost-btn{background:#fff;color:#111;box-shadow:none;border-color:var(--line)}
.ghost-btn:hover{border-color:#111;box-shadow:0 12px 34px rgba(0,0,0,.08)}
.locale-switcher{display:inline-flex;align-items:center;gap:2px;width:max-content;min-height:34px;padding:3px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.7);box-shadow:0 8px 24px rgba(0,0,0,.04)}
.locale-switcher button{display:grid;place-items:center;min-width:34px;height:28px;margin:0;border:0;border-radius:999px;background:transparent;color:var(--muted);font-size:11px;font-weight:900;letter-spacing:.04em;cursor:pointer;box-shadow:none;transition:background .18s ease,color .18s ease}
.locale-switcher button:hover,.locale-switcher button.is-active{background:#111;color:#fff}
.error,.success,.empty{
  margin:0 0 18px;
  border-radius:20px;
  padding:16px 18px;
  background:#fff;
  border:1px solid var(--line);
  box-shadow:0 12px 32px rgba(0,0,0,.05);
  font-weight:720;
}
.error{color:var(--danger);border-color:#ead2d2}
.success{color:var(--success)}
.empty{color:var(--muted)}

/* Shared mobile shell */
.mobile-shell-header{display:none}
.mobile-bottom-bar{display:none}
.drawer-overlay{display:none}
.icon-btn{
  display:inline-grid;
  place-items:center;
  flex:0 0 auto;
  width:44px;
  height:44px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(255,255,255,.86);
  color:#111;
  cursor:pointer;
  box-shadow:0 10px 28px rgba(0,0,0,.045);
}
.icon-btn svg{width:21px;height:21px;stroke-width:2}
.sidebar-mobile-head{display:none}

/* Course workspace */
.layout{display:grid;grid-template-columns:312px minmax(0,1fr);min-height:100vh}
.sidebar{
  position:sticky;
  top:0;
  height:100vh;
  padding:26px 22px;
  background:rgba(255,255,255,.78);
  border-right:1px solid var(--line);
  backdrop-filter:blur(24px);
  -webkit-backdrop-filter:blur(24px);
  overflow:auto;
  z-index:4;
}
.brand{padding:8px 4px 18px}
.brand-logo{display:block;width:86px;height:86px;margin:0 0 20px}
.brand h1{margin:0;font-size:25px;line-height:1.14;letter-spacing:-.045em;max-width:230px}
.back{display:inline-flex;align-items:center;gap:9px;margin:0 0 22px;color:var(--muted);font-weight:760;font-size:13px;letter-spacing:-.01em}
.back:before{content:"←";display:grid;place-items:center;width:38px;height:38px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.72);color:var(--ink);transition:.18s ease}
.back:hover:before{background:#111;color:#fff;border-color:#111}
.sidebar-rule{height:1px;background:var(--line);margin:0 0 18px}
.menu{display:grid;gap:9px;padding-bottom:18px}
.section{margin:16px 0 2px;color:var(--muted);font-size:11px;font-weight:850;text-transform:uppercase;letter-spacing:.12em}
.item{
  position:relative;
  display:grid;
  grid-template-columns:44px minmax(0,1fr) 24px;
  align-items:center;
  gap:10px;
  width:100%;
  border:1px solid transparent;
  background:transparent;
  color:var(--ink);
  text-align:left;
  border-radius:16px;
  padding:10px;
  cursor:pointer;
  transition:background .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.item:hover{background:#fff;border-color:var(--line);box-shadow:0 8px 26px rgba(0,0,0,.05);transform:translateY(-1px)}
.item.active{background:#111;color:#fff;border-color:#111;box-shadow:0 18px 40px rgba(0,0,0,.14)}
.item.active .lesson-number,.item.active .done{border-color:rgba(255,255,255,.38);color:#fff}
.lesson-number{display:grid;place-items:center;width:42px;height:34px;border:1px solid var(--line);border-radius:999px;font-size:11px;font-weight:800;color:var(--ink);background:#fff}
.item.active .lesson-number{background:rgba(255,255,255,.1)}
.lesson-title{min-width:0;font-size:13px;line-height:1.28;font-weight:680;letter-spacing:-.018em}
.done{display:grid;place-items:center;width:24px;height:24px;border:1px solid transparent;border-radius:999px;color:var(--muted);font-weight:850}
.item.completed:not(.active) .done{border-color:#111;background:#111;color:#fff}
.main{min-width:0;padding:34px clamp(22px,5vw,72px) 48px}
.top{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:18px;
  align-items:center;
  margin:0 0 18px;
  padding:22px 24px;
  background:rgba(255,255,255,.78);
  border:1px solid var(--line);
  border-radius:24px;
  box-shadow:var(--shadow-soft);
  overflow:hidden;
}
.top:before,.top:after{content:"";position:absolute;border:1px solid rgba(0,0,0,.09);border-radius:50%;pointer-events:none}
.top:before{width:220px;height:220px;right:-72px;top:-116px}
.top:after{width:150px;height:150px;right:56px;top:-88px;transform:rotate(24deg)}
.top-inner{position:relative;z-index:1}
.eyebrow{margin:0 0 8px;color:var(--muted);font-size:12px;font-weight:880;text-transform:uppercase;letter-spacing:.14em}
.top h2{margin:0;font-size:clamp(24px,3vw,40px);line-height:1.04;letter-spacing:-.055em;max-width:840px}
.progress-panel{display:none}
.progress-ring{--progress:0%;display:grid;place-items:center;width:58px;height:58px;border-radius:999px;background:conic-gradient(#111 var(--progress),#e6e6e2 0);box-shadow:inset 0 0 0 1px rgba(0,0,0,.06)}
.progress-ring:after{content:"";width:44px;height:44px;border-radius:inherit;background:#fff;border:1px solid var(--line)}
.progress-copy{font-size:20px;font-weight:780;letter-spacing:-.03em}
.progress-track{height:7px;margin-top:10px;border-radius:99px;background:#e8e8e4;overflow:hidden}
.progress-track span{display:block;width:0;height:100%;border-radius:inherit;background:#111;transition:width .24s ease}
.content-card{background:rgba(255,255,255,.82);border:1px solid var(--line);border-radius:24px;padding:clamp(22px,4vw,42px);box-shadow:var(--shadow);overflow:visible}
.lesson-footer-actions{display:flex;justify-content:flex-end;margin-top:clamp(26px,4vw,44px);padding-top:22px;border-top:1px solid var(--line)}
.lesson-next-btn{min-width:220px}
.content{display:block;width:100%;border:0;background:transparent}
.lesson-content{position:relative;z-index:1;font-size:17px;line-height:1.62;color:var(--ink)}
.lesson-content:empty:before{content:"Материал пока пуст.";color:var(--muted)}
.lesson-content p{max-width:820px;margin:0 0 1em}
.lesson-content a{color:#111;text-decoration:underline;text-underline-offset:4px}
.lesson-content h1,.lesson-content h2,.lesson-content h3{line-height:1.08;letter-spacing:-.045em;margin:0 0 .7em}
.lesson-content img,.lesson-content video{max-width:100%;height:auto;border-radius:18px}
.lesson-content iframe{display:block;width:100%!important;max-width:100%;height:auto!important;aspect-ratio:16/9;border:0;border-radius:18px;box-shadow:0 18px 44px rgba(0,0,0,.08)}
.lesson-content>div{max-width:100%}
.lesson-content>div:has(> iframe){width:min(100%,960px)!important;height:auto!important;aspect-ratio:16/9;margin-left:auto!important;margin-right:auto!important}
.lesson-content pre{white-space:pre-wrap;background:var(--wash);padding:16px;border:1px solid var(--line);border-radius:18px}
.lesson-content table{border-collapse:collapse;width:100%;overflow:hidden;border-radius:18px}
.lesson-content td,.lesson-content th{border:1px solid var(--line);padding:10px;text-align:left}
.module-feedback{margin:30px 0 0;padding:26px 0 0;border-top:1px solid var(--line)}
.module-feedback-panel{display:grid;gap:20px;width:min(860px,100%);padding:22px;border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:0 14px 38px rgba(0,0,0,.055)}
.module-feedback-head{display:grid;gap:6px}.module-feedback-head h3{margin:0;font-size:24px;line-height:1.08;letter-spacing:-.045em}.module-feedback-head p{margin:0;color:var(--muted);font-size:14px;line-height:1.45}
.module-feedback-step{color:var(--muted);font-size:12px;font-weight:850;text-transform:uppercase;letter-spacing:.1em}.module-feedback-question{margin:0;font-size:26px;line-height:1.1;letter-spacing:-.055em}
.feedback-options{display:grid;gap:10px}.feedback-option{display:flex;align-items:center;gap:12px;width:100%;min-height:54px;border:1px solid var(--line);border-radius:16px;padding:0 16px;background:var(--wash);color:#111;text-align:left;font-weight:760;cursor:pointer;transition:background .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease}.feedback-option:before{content:"";flex:0 0 auto;width:18px;height:18px;border:2px solid var(--muted);border-radius:999px;background:#fff}.feedback-option:hover{border-color:#111;transform:translateY(-1px)}.feedback-option.is-selected{background:#111;color:#fff;border-color:#111;box-shadow:0 12px 30px rgba(0,0,0,.12)}.feedback-option.is-selected:before{border-color:#fff;box-shadow:inset 0 0 0 4px #111;background:#fff}
.feedback-scale{display:grid;grid-template-columns:repeat(11,minmax(0,1fr));gap:4px}.feedback-score{min-width:0;height:44px;border:1px solid var(--line);border-radius:12px;background:var(--wash);color:#111;font-weight:850;cursor:pointer}.feedback-score:hover,.feedback-score.is-selected{background:#111;color:#fff;border-color:#111}.feedback-scale-labels{display:flex;justify-content:space-between;gap:16px;color:var(--muted);font-size:12px;line-height:1.35}
.feedback-textarea{width:100%;min-height:180px;resize:vertical;border:1px solid var(--line);border-radius:18px;background:var(--wash);padding:16px;color:#111;font:inherit;line-height:1.5;outline:0}.feedback-textarea:focus{border-color:#111;box-shadow:0 0 0 4px rgba(0,0,0,.06)}
.module-feedback-actions{display:flex;justify-content:space-between;gap:12px;align-items:center}.module-feedback-actions .mini-btn{min-width:112px}.feedback-error{margin:0;color:var(--danger);font-size:14px;font-weight:760}.feedback-success{display:grid;gap:12px;padding:18px;border:1px solid var(--line);border-radius:18px;background:var(--wash)}.feedback-success strong{font-size:20px;line-height:1.15;letter-spacing:-.035em}.feedback-success p{margin:0;color:var(--muted);font-size:14px;line-height:1.45}.feedback-submit[disabled],.feedback-next[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.sidebar-actions{display:grid;gap:10px;margin-top:18px}.sidebar-actions .ghost-btn{width:100%;min-height:48px;font-size:13px}.sidebar-actions .locale-switcher{width:100%;justify-content:center}

/* Courses page */
.topbar{
  position:sticky;
  top:0;
  z-index:5;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:18px;
  padding:18px clamp(18px,4vw,48px);
  background:rgba(255,255,255,.78);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(22px);
  -webkit-backdrop-filter:blur(22px);
}
.brand-line{display:flex;align-items:center;gap:14px;min-width:0}.logo{width:54px;height:54px}.product-title{font-weight:900;letter-spacing:-.035em}.user-line{display:flex;align-items:center;gap:8px;min-width:0;margin-top:2px}.user{font-size:13px}.app-version{display:inline-flex;align-items:center;justify-content:center;min-height:20px;border:1px solid var(--line);border-radius:999px;padding:0 7px;background:rgba(255,255,255,.64);color:var(--muted);font-size:11px;font-weight:850;line-height:1;letter-spacing:.04em;text-transform:uppercase;white-space:nowrap}.app-version-sidebar{width:max-content;margin:-8px 0 12px 4px}.topbar-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.wrap{width:min(1180px,100%);margin:0 auto;padding:clamp(20px,4vw,56px) clamp(16px,3vw,28px) 64px}
.hero{position:relative;overflow:hidden;min-height:260px;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:22px;margin-bottom:28px;padding:clamp(26px,5vw,54px);background:rgba(255,255,255,.82);border:1px solid var(--line);border-radius:34px;box-shadow:var(--shadow)}
.hero:before,.hero:after{content:"";position:absolute;border:1px solid rgba(0,0,0,.085);border-radius:50%;pointer-events:none}.hero:before{width:390px;height:390px;right:-95px;top:-140px}.hero:after{width:270px;height:270px;right:82px;top:-80px;transform:rotate(25deg)}
.hero h1{position:relative;z-index:1;margin:0;font-size:clamp(44px,7vw,88px);line-height:.92;letter-spacing:-.075em;max-width:780px}.hero p{position:relative;z-index:1;max-width:560px;margin:18px 0 0;color:var(--muted);font-size:17px;line-height:1.55}.hero-logo{position:relative;z-index:1;width:114px;height:114px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}
.course-card{position:relative;overflow:hidden;min-height:260px;display:flex;flex-direction:column;gap:13px;background:rgba(255,255,255,.84);border:1px solid var(--line);border-radius:28px;padding:24px;color:var(--ink);text-decoration:none;cursor:pointer;box-shadow:0 16px 44px rgba(0,0,0,.055);transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}
.course-card:before{content:"";position:absolute;right:-72px;top:-82px;width:170px;height:170px;border:1px solid rgba(0,0,0,.08);border-radius:50%;transition:.18s ease}.course-card:hover{transform:translateY(-3px);border-color:#111;box-shadow:0 22px 58px rgba(0,0,0,.1)}.course-card:hover:before{right:-46px}.card-mark{position:relative;display:grid;place-items:center;width:42px;height:42px;border:1px solid #111;border-radius:999px;font-weight:900;letter-spacing:-.04em}.course-card h2{position:relative;margin:4px 0 0;font-size:27px;line-height:1.05;letter-spacing:-.055em}.course-id{position:relative;font-size:13px;word-break:break-all}.course-meta{position:relative;color:var(--muted);font-size:13px;font-weight:760}.course-progress-row{position:relative;display:flex;justify-content:space-between;gap:14px;color:var(--muted);font-size:12px;font-weight:850}.course-mini-track{position:relative;height:7px;border-radius:99px;background:#e8e8e4;overflow:hidden}.course-mini-track span{display:block;height:100%;border-radius:inherit;background:#111}.course-badge-preview{position:relative;display:grid;gap:9px;padding:12px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.72)}.course-badge-label{color:var(--muted);font-size:11px;font-weight:850;text-transform:uppercase;letter-spacing:.1em}.course-badge-rail{display:flex;align-items:center;gap:6px;min-height:38px}.course-badge-rail img{width:38px;height:38px;border:1px solid var(--line);border-radius:999px;background:#fff;object-fit:cover;box-shadow:0 6px 16px rgba(0,0,0,.06)}.course-badge-rail img.is-locked{opacity:.56}.badge-preview-link{width:100%}.course-next{position:relative;display:grid;gap:4px;margin-top:4px}.course-next span{color:var(--muted);font-size:11px;font-weight:850;text-transform:uppercase;letter-spacing:.1em}.course-next strong{font-size:15px;line-height:1.25}.open-label{position:relative;margin-top:auto;font-weight:850;font-size:14px}
.course-live{position:relative;display:grid;gap:10px;margin:4px 0 2px}.course-live-item{display:grid;gap:5px;padding:13px;border:1px solid var(--line);border-radius:16px;background:#fff}.course-live-label{color:var(--muted);font-size:10px;font-weight:850;text-transform:uppercase;letter-spacing:.1em}.course-live-item strong{font-size:15px;line-height:1.2}.course-live-item span:not(.course-live-label){color:var(--muted);font-size:12px;font-weight:700}.course-live-item .course-live-local{color:#111;font-weight:850}.live-local-time,.live-course-time{color:var(--muted);font-size:12px;font-weight:760}.course-live-item em{font-style:normal;font-size:13px;font-weight:850}.course-live-actions,.live-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}.mini-btn{display:inline-flex;align-items:center;justify-content:center;min-height:38px;border:1px solid var(--line);border-radius:13px;padding:0 13px;background:#fff;color:#111;font-weight:850;font-size:12px;cursor:pointer;box-shadow:none;text-decoration:none;white-space:nowrap}.mini-btn.primary{background:#111;border-color:#111;color:#fff}.mini-btn:hover{border-color:#111;transform:translateY(-1px)}.calendar-menu{position:relative;display:inline-flex}.calendar-menu>summary{list-style:none}.calendar-menu>summary::-webkit-details-marker{display:none}.calendar-menu[open]>summary{border-color:#111}.calendar-menu-list{position:absolute;left:0;top:calc(100% + 7px);z-index:25;display:grid;gap:3px;width:max-content;min-width:224px;padding:6px;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:0 18px 44px rgba(0,0,0,.12)}.calendar-menu-list button{display:block;width:100%;border:0;border-radius:10px;background:#fff;color:#111;padding:10px 11px;text-align:left;font-size:12px;font-weight:820;cursor:pointer}.calendar-menu-list button:hover,.calendar-menu-list button:focus-visible{background:var(--wash);outline:0}.course-live-actions .calendar-menu[open],.live-actions .calendar-menu[open]{display:grid;flex:0 1 260px;max-width:100%}.course-live-actions .calendar-menu[open]>summary,.live-actions .calendar-menu[open]>summary{width:100%}.course-live-actions .calendar-menu[open] .calendar-menu-list,.live-actions .calendar-menu[open] .calendar-menu-list{position:static;width:100%;min-width:0;margin-top:7px;box-shadow:none}.live-panel{position:relative;margin:0 0 14px;padding:0;background:transparent;border:0;border-radius:0;box-shadow:none;overflow:visible}.live-panel:before{display:none}.live-stack{display:grid;gap:8px}.live-event{position:relative;overflow:hidden;display:grid;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.78);box-shadow:0 10px 28px rgba(0,0,0,.045)}.live-event.is-actionable{border-color:#111;box-shadow:0 14px 36px rgba(0,0,0,.08)}.live-summary{-webkit-appearance:none;appearance:none;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:12px;width:100%;margin:0;border:0!important;border-radius:0;background:transparent;color:var(--ink);padding:13px 16px;text-align:left;cursor:pointer;font:inherit;box-shadow:none}.live-summary-text{display:grid;gap:3px;min-width:0}.live-summary-kicker{display:block;color:var(--muted);font-size:10px;font-weight:850;text-transform:uppercase;letter-spacing:.12em}.live-summary-main{display:block;font-size:14px;font-weight:850;line-height:1.28}.live-summary-zone{color:var(--muted)}.live-summary-toggle{color:var(--muted);font-size:12px;font-weight:850;white-space:nowrap}.live-details{display:grid;gap:8px;padding:0 16px 16px}.live-event-title{margin:0;font-size:18px;line-height:1.12;letter-spacing:-.04em}.live-local-time{color:#111;font-weight:850}.live-event-description{margin:0;color:var(--muted);font-size:14px;line-height:1.45}.live-pending{display:inline-flex;align-items:center;min-height:38px;color:var(--muted);font-size:13px;font-weight:850}.next-prompt{position:fixed;right:24px;bottom:calc(24px + env(safe-area-inset-bottom));z-index:45;display:flex;align-items:center;justify-content:space-between;gap:18px;width:min(420px,calc(100vw - 48px));padding:14px 16px;border:1px solid var(--line);border-radius:22px;background:rgba(255,255,255,.94);box-shadow:0 18px 52px rgba(0,0,0,.14);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px)}.next-prompt strong{font-size:14px;line-height:1.2;font-weight:900;letter-spacing:-.02em}.next-prompt-actions{display:flex;gap:8px;flex:0 0 auto}.next-prompt .mini-btn{min-width:72px}

@media(max-width:980px){
  .live-panel{margin-bottom:12px}
  .live-grid{grid-template-columns:1fr}
  .live-actions,.course-live-actions{display:grid;grid-template-columns:1fr}
  .calendar-menu{display:block;width:100%}.calendar-menu-list{position:static;width:100%;margin-top:7px}
  .mini-btn{width:100%}
}

/* Auth pages */
.auth-wrap{min-height:100vh;display:grid;place-items:center;padding:24px}.auth-card{position:relative;overflow:hidden;width:min(466px,100%);background:rgba(255,255,255,.84);border:1px solid var(--line);border-radius:32px;padding:34px;box-shadow:0 28px 80px rgba(0,0,0,.1);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px)}.auth-card:before,.auth-card:after{content:"";position:absolute;border:1px solid rgba(0,0,0,.08);border-radius:50%;pointer-events:none}.auth-card:before{width:260px;height:260px;right:-120px;top:-118px}.auth-card:after{width:180px;height:180px;right:-28px;top:-88px;transform:rotate(25deg)}.auth-card .locale-switcher{position:absolute;z-index:2;top:24px;right:24px}.auth-card .locale-switcher button{width:auto;height:28px;margin:0;border:0;border-radius:999px;background:transparent;color:var(--muted);box-shadow:none}.auth-card .locale-switcher button:hover,.auth-card .locale-switcher button.is-active{background:#111;color:#fff}.auth-card .logo{position:relative;z-index:1;width:88px;height:88px;margin:0 0 26px}.auth-card h1{position:relative;z-index:1;margin:0 0 10px;font-size:42px;line-height:.98;letter-spacing:-.07em}.auth-card p{position:relative;z-index:1;color:var(--muted);font-size:15px;line-height:1.55;margin:0 0 24px}.auth-card form{position:relative;z-index:1}.auth-card label{display:block;margin:16px 0 7px;font-size:13px;font-weight:850;letter-spacing:.01em}.auth-card input{width:100%;height:52px;padding:0 15px;border:1px solid var(--line);border-radius:16px;background:#fff;color:var(--ink);outline:0;transition:.18s ease}.auth-card input:focus{border-color:#111;box-shadow:0 0 0 4px rgba(0,0,0,.06)}.auth-card button{width:100%;height:54px;margin-top:20px;border:1px solid #111;border-radius:17px;background:#111;color:#fff;font-weight:880;cursor:pointer;box-shadow:0 15px 36px rgba(0,0,0,.16);transition:.18s ease}.auth-card button:hover{transform:translateY(-1px)}.links{position:relative;z-index:1;display:flex;justify-content:space-between;gap:16px;margin-top:18px;font-size:14px;font-weight:760}.links a,.back-link{color:#111;text-decoration:none;border-bottom:1px solid rgba(0,0,0,.22);padding-bottom:2px}.back-link{position:relative;z-index:1;display:inline-block;margin-top:18px;font-weight:760;font-size:14px}.auth-card #message{position:relative;z-index:1;margin-top:16px}

/* Redirect/offline cards */
.redirect-body{display:grid;place-items:center;padding:24px}.redirect-card{width:min(420px,100%);padding:32px;background:rgba(255,255,255,.84);border:1px solid var(--line);border-radius:30px;box-shadow:var(--shadow);text-align:center}.redirect-card .logo{width:88px;height:88px}.redirect-card h1{margin:18px 0 10px;font-size:34px;line-height:1;letter-spacing:-.06em}.redirect-card p{margin:0 0 20px;color:var(--muted)}.redirect-card a{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 18px;border-radius:16px;background:#111;color:#fff;text-decoration:none;font-weight:850}

@media(max-width:980px){
  body.course-body{padding-top:calc(var(--mobile-header-height) + env(safe-area-inset-top));padding-bottom:calc(var(--mobile-bottom-height) + env(safe-area-inset-bottom))}
  body.drawer-open{overflow:hidden}
  .mobile-shell-header{
    position:fixed;
    top:0;
    left:0;
    right:0;
    z-index:30;
    display:flex;
    align-items:center;
    gap:12px;
    min-height:calc(var(--mobile-header-height) + env(safe-area-inset-top));
    padding:calc(10px + env(safe-area-inset-top)) 14px 10px;
    background:rgba(255,255,255,.86);
    border-bottom:1px solid var(--line);
    backdrop-filter:blur(24px);
    -webkit-backdrop-filter:blur(24px);
  }
  .mobile-shell-header .app-logo{width:44px;height:44px;flex:0 0 auto}
  .mobile-title{min-width:0;display:grid;gap:1px;line-height:1.15}.mobile-title span{color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.12em;font-weight:850}.mobile-title strong{display:block;min-width:0;font-size:14px;letter-spacing:-.035em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.mobile-spacer{flex:1}
  .layout{display:block;min-height:0}
  .sidebar{
    position:fixed;
    top:0;
    bottom:0;
    left:0;
    width:min(88vw,372px);
    height:100dvh;
    padding:calc(14px + env(safe-area-inset-top)) 16px calc(22px + env(safe-area-inset-bottom));
    border-right:1px solid var(--line);
    border-bottom:0;
    transform:translate3d(-108%,0,0);
    transition:transform .24s ease;
    z-index:42;
    box-shadow:24px 0 70px rgba(0,0,0,.18);
    background:rgba(255,255,255,.94);
  }
  .sidebar.is-open{transform:translate3d(0,0,0)}
  .drawer-overlay{display:block;position:fixed;inset:0;z-index:40;background:rgba(0,0,0,.38);backdrop-filter:blur(3px);-webkit-backdrop-filter:blur(3px)}
  .sidebar-mobile-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 10px}.sidebar-mobile-head .drawer-label{font-weight:900;letter-spacing:-.035em}.sidebar-mobile-head .icon-btn{box-shadow:none}
  .brand{display:grid;grid-template-columns:62px 1fr;gap:13px;align-items:center;padding:8px 0 14px}.brand-logo{width:62px;height:62px;margin:0}.brand h1{font-size:21px;max-width:100%}.back{margin-bottom:12px}.back:before{width:34px;height:34px}.sidebar-rule{margin-bottom:12px}.menu{max-height:none;overflow:visible;border:0;border-radius:0;padding:0 0 16px;background:transparent}.section{margin-top:14px}.item{min-height:52px;border-color:var(--line);background:#fff}.item.active{background:#111;border-color:#111}.main{padding:14px 14px 22px}.top{grid-template-columns:1fr;padding:16px;border-radius:22px;margin-bottom:14px}.top h2{font-size:clamp(24px,7vw,34px);margin-bottom:0}.top:before{right:-180px}.top:after{right:-46px}.progress-panel{display:none}.content-card{padding:20px;border-radius:22px}.content{border-radius:0}.lesson-footer-actions{margin-top:28px;padding-top:18px}.lesson-next-btn{width:100%;min-height:56px;border-radius:18px}
  .mobile-bottom-bar{
    position:fixed;
    left:10px;
    right:10px;
    bottom:calc(10px + env(safe-area-inset-bottom));
    z-index:29;
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:8px;
    padding:8px;
    border:1px solid var(--line);
    border-radius:24px;
    background:rgba(255,255,255,.88);
    backdrop-filter:blur(24px);
    -webkit-backdrop-filter:blur(24px);
    box-shadow:0 18px 52px rgba(0,0,0,.14);
  }
  .mobile-bottom-bar a,.mobile-bottom-bar button{min-height:48px;border:1px solid transparent;border-radius:17px;background:transparent;color:#111;font-weight:850;font-size:13px;display:inline-flex;align-items:center;justify-content:center;gap:8px;cursor:pointer}.mobile-bottom-bar .mobile-primary{background:#111;color:#fff;border-color:#111}.mobile-bottom-bar .mobile-primary.completed{background:#fff;color:#111;border-color:#111}.mobile-bottom-bar .mobile-primary.completed:before{content:"✓";display:inline-grid;place-items:center;width:18px;height:18px;border:1px solid currentColor;border-radius:99px}
  .next-prompt{position:fixed;left:10px;right:10px;bottom:calc(var(--mobile-bottom-height) + 22px + env(safe-area-inset-bottom));z-index:32;display:flex;align-items:center;justify-content:space-between;gap:12px;width:auto;padding:12px 14px;border:1px solid var(--line);border-radius:22px;background:rgba(255,255,255,.94);box-shadow:0 18px 52px rgba(0,0,0,.14);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px)}
  .next-prompt strong{font-size:13px;line-height:1.2;font-weight:900;letter-spacing:-.02em}.next-prompt-actions{display:flex;gap:8px;flex:0 0 auto}.next-prompt .mini-btn{min-width:66px}
  .topbar{padding:calc(12px + env(safe-area-inset-top)) 14px 12px}.topbar-actions{gap:8px}.topbar .btn,.topbar .ghost-btn{min-height:44px;padding:0 14px;border-radius:14px;font-size:13px}.brand-line{gap:10px}.logo{width:46px;height:46px}.user{max-width:42vw;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.wrap{padding:22px 14px 48px}.hero{grid-template-columns:1fr;min-height:0;border-radius:28px;padding:28px}.hero-logo{width:76px;height:76px;grid-row:1}.hero h1{font-size:clamp(42px,12vw,62px)}.hero p{font-size:15px}.grid{grid-template-columns:1fr}.course-card{min-height:206px;border-radius:24px}.auth-wrap{padding:calc(18px + env(safe-area-inset-top)) 14px calc(18px + env(safe-area-inset-bottom))}.auth-card{border-radius:28px;padding:28px}.auth-card .logo{width:78px;height:78px}.auth-card h1{font-size:40px}.links{flex-direction:column;gap:10px}.redirect-body{padding:calc(18px + env(safe-area-inset-top)) 14px calc(18px + env(safe-area-inset-bottom))}.redirect-card{border-radius:28px}
}

@media(max-width:560px){
  .mobile-shell-header{gap:10px;padding-left:12px;padding-right:12px}.icon-btn{width:42px;height:42px}.mobile-title strong{max-width:44vw}.topbar .install-app{display:none!important}.product-title{font-size:15px}.logo{width:44px;height:44px}.topbar .btn{min-width:0}.brand h1{font-size:20px}.top h2{font-size:28px}.lesson-title{font-size:12px}.item{grid-template-columns:42px minmax(0,1fr) 22px}.lesson-number{width:40px;height:30px;font-size:10.5px}.section{font-size:10px}.content-card{border-radius:20px;padding:18px}.lesson-content{font-size:16px}.wrap{padding-left:14px;padding-right:14px}.hero{padding:24px}.hero h1{font-size:42px}.hero p{font-size:15px}.course-card{min-height:210px}.auth-card{padding:26px}.auth-card h1{font-size:38px}.auth-card input,.auth-card button{height:52px}.mobile-bottom-bar{grid-template-columns:1fr 1fr}.mobile-bottom-bar a,.mobile-bottom-bar button{font-size:12px}.next-prompt{align-items:stretch;flex-direction:column}.next-prompt-actions{display:grid;grid-template-columns:1fr 1fr;width:100%}.next-prompt .mini-btn{width:100%}
}

/* Courses overview refinement */
.hero{min-height:150px;align-items:center;gap:18px;margin-bottom:24px;padding:clamp(20px,3vw,34px);border-radius:28px}
.hero:before{width:300px;height:300px;right:-86px;top:-126px}
.hero:after{width:210px;height:210px;right:72px;top:-78px}
.hero h1{font-size:clamp(34px,4.8vw,56px);line-height:1;letter-spacing:-.065em}
.hero p{max-width:620px;margin-top:10px;font-size:15px;line-height:1.45}
.hero-logo{width:72px;height:72px}
.course-card{gap:12px;cursor:default}
.course-open-btn{position:relative;width:100%;min-height:48px;border-radius:15px;margin:2px 0 0;box-shadow:0 14px 34px rgba(0,0,0,.14)}
.course-live{margin:2px 0 0}
.course-live .live-event{background:#fff;box-shadow:none}
.course-live .live-summary{padding:12px 14px}
.course-live .live-summary-main{font-size:14px}
.course-live .live-details{padding:0 14px 14px}

@media(max-width:980px){
  .hero{grid-template-columns:minmax(0,1fr) auto;min-height:126px;padding:22px;border-radius:24px}
  .hero-logo{width:58px;height:58px;grid-row:auto}
  .hero h1{font-size:clamp(32px,9vw,44px)}
  .hero p{margin-top:8px;font-size:14px}
  .course-card{min-height:0}
  .course-open-btn{min-height:48px}
}

@media(max-width:560px){
  .hero{grid-template-columns:1fr;gap:12px;padding:20px}
  .hero-logo{width:52px;height:52px;grid-row:1}
  .hero h1{font-size:36px}
  .course-live .live-summary{grid-template-columns:1fr;gap:7px}
  .course-live .live-summary-toggle{justify-self:start}
}

.pwa-install-card{
  position:fixed;
  right:18px;
  bottom:calc(18px + env(safe-area-inset-bottom));
  z-index:64;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  align-items:center;
  gap:14px;
  width:min(520px,calc(100vw - 36px));
  padding:16px;
  border:1px solid var(--line);
  border-radius:22px;
  background:rgba(255,255,255,.94);
  box-shadow:0 22px 62px rgba(0,0,0,.16);
  backdrop-filter:blur(24px);
  -webkit-backdrop-filter:blur(24px);
}
.pwa-install-card[hidden]{display:none!important}
.pwa-install-copy{display:grid;gap:6px;min-width:0}
.pwa-install-copy strong{font-size:15px;line-height:1.15;font-weight:900;letter-spacing:-.025em}
.pwa-install-copy p{margin:0;color:var(--muted);font-size:13px;line-height:1.35;font-weight:680}
.pwa-install-copy ol{margin:2px 0 0;padding-left:18px;color:var(--muted);font-size:12px;line-height:1.35;font-weight:720}
.pwa-install-copy li+li{margin-top:3px}
.pwa-install-actions{display:flex;gap:8px;align-items:center}

.awards-wrap{width:min(1240px,100%)}
.awards-hero{margin-bottom:18px}
.awards-course-section{display:grid;gap:16px;margin-top:18px}
.awards-course-head{display:flex;align-items:end;justify-content:space-between;gap:18px}
.awards-course-head h2{margin:0;font-size:clamp(24px,3vw,38px);line-height:1.05;letter-spacing:-.055em}
.awards-course-head p{margin:8px 0 0;color:var(--muted);font-size:14px;font-weight:760}
.awards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:14px}
.award-card{display:grid;gap:10px;align-content:start;min-height:282px;padding:14px;border:1px solid var(--line);border-radius:22px;background:rgba(255,255,255,.84);box-shadow:0 14px 38px rgba(0,0,0,.055);transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}
.award-card.is-unlocked{cursor:pointer}
.award-card.is-unlocked:hover{transform:translateY(-2px);border-color:#111;box-shadow:0 20px 50px rgba(0,0,0,.1)}
.award-card.is-locked{color:var(--muted)}
.award-media{aspect-ratio:1;border:1px solid var(--line);border-radius:20px;background:#fff;overflow:hidden}
.award-media img{display:block;width:100%;height:100%;object-fit:cover}
.award-status{width:max-content;max-width:100%;border:1px solid var(--line);border-radius:999px;padding:5px 9px;background:#fff;color:var(--muted);font-size:10px;font-weight:900;text-transform:uppercase;letter-spacing:.1em}
.award-card.is-unlocked .award-status{border-color:#111;background:#111;color:#fff}
.award-card h3{margin:0;color:#111;font-size:18px;line-height:1.08;letter-spacing:-.04em}
.award-module{margin:0;color:var(--muted);font-size:13px;line-height:1.32;font-weight:720}
.award-progress{margin-top:auto;color:var(--muted);font-size:12px;line-height:1.35;font-weight:820}
.badge-unlock-overlay{position:fixed;inset:0;z-index:80;display:grid;place-items:center;padding:22px;background:rgba(0,0,0,.38);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.badge-unlock-card{display:grid;justify-items:center;gap:12px;width:min(430px,100%);padding:24px;border:1px solid var(--line);border-radius:28px;background:rgba(255,255,255,.96);box-shadow:0 30px 90px rgba(0,0,0,.22);text-align:center}
.badge-unlock-card img{width:min(220px,68vw);height:min(220px,68vw);border:1px solid var(--line);border-radius:999px;background:#fff;object-fit:cover;box-shadow:0 18px 46px rgba(0,0,0,.12)}
.badge-unlock-card h2{margin:0;font-size:clamp(28px,7vw,42px);line-height:1;letter-spacing:-.07em}
.badge-unlock-card p{margin:0;color:var(--muted);font-size:15px;line-height:1.45}
.badge-share-hint{font-weight:760}
.badge-share-status{min-height:18px;color:var(--muted);font-size:12px!important;font-weight:820}
.badge-share-status:empty{display:none}
.badge-unlock-actions{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;width:100%;margin-top:4px}
.badge-detail-actions{grid-template-columns:1fr 1fr}
.badge-share-btn[disabled]{opacity:.56;cursor:not-allowed;transform:none}

@media(max-width:980px){
  .pwa-install-card{
    left:10px;
    right:10px;
    bottom:calc(12px + env(safe-area-inset-bottom));
    width:auto;
    grid-template-columns:1fr;
    align-items:stretch;
    border-radius:24px;
  }
  .course-body .pwa-install-card{bottom:calc(var(--mobile-bottom-height) + 22px + env(safe-area-inset-bottom))}
  .pwa-install-actions{display:grid;grid-template-columns:1fr 1fr}
  .pwa-install-card .mini-btn{width:100%}
  .awards-course-head{align-items:stretch;flex-direction:column}
  .awards-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .award-card{min-height:0;border-radius:20px}
  .badge-unlock-actions,.badge-detail-actions{grid-template-columns:1fr}
}

@media(max-width:560px){
  .awards-grid{gap:10px}
  .award-card{padding:10px}
  .award-card h3{font-size:16px}
  .award-module{font-size:12px}
  .award-progress{font-size:11px}
  .awards-top-link{display:none!important}
}

@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}