/* Language LK visual system, adapted from the approved Figma source. */
@font-face{font-family:Manrope;src:url("fonts/manrope-cyrillic-400.woff2") format("woff2");font-style:normal;font-weight:400;font-display:swap;unicode-range:U+0400-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}
@font-face{font-family:Manrope;src:url("fonts/manrope-latin-400.woff2") format("woff2");font-style:normal;font-weight:400;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:Manrope;src:url("fonts/manrope-cyrillic-500.woff2") format("woff2");font-style:normal;font-weight:500;font-display:swap;unicode-range:U+0400-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}
@font-face{font-family:Manrope;src:url("fonts/manrope-latin-500.woff2") format("woff2");font-style:normal;font-weight:500;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:Manrope;src:url("fonts/manrope-cyrillic-600.woff2") format("woff2");font-style:normal;font-weight:600;font-display:swap;unicode-range:U+0400-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}
@font-face{font-family:Manrope;src:url("fonts/manrope-latin-600.woff2") format("woff2");font-style:normal;font-weight:600;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:Manrope;src:url("fonts/manrope-cyrillic-700.woff2") format("woff2");font-style:normal;font-weight:700;font-display:swap;unicode-range:U+0400-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}
@font-face{font-family:Manrope;src:url("fonts/manrope-latin-700.woff2") format("woff2");font-style:normal;font-weight:700;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:Manrope;src:url("fonts/manrope-cyrillic-800.woff2") format("woff2");font-style:normal;font-weight:800;font-display:swap;unicode-range:U+0400-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}
@font-face{font-family:Manrope;src:url("fonts/manrope-latin-800.woff2") format("woff2");font-style:normal;font-weight:800;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

:root{
  --bg:#f3f1f9;
  --surface:#fff;
  --surface-2:#f2f2ff;
  --surface-3:#e8f4fc;
  --text:#191a27;
  --text-soft:#747587;
  --line:#dfe7ef;
  --primary:#78258d;
  --primary-strong:#641f76;
  --primary-soft:#f3e9f6;
  --primary-soft-2:#e6d8ef;
  --cyan:#2e90d1;
  --cyan-soft:#def1ff;
  --coral:#e42125;
  --coral-soft:#fde9ea;
  --amber:#b57008;
  --amber-soft:#fff4d9;
  --success:#2aaa37;
  --success-soft:#e8f8eb;
  --shadow:0 22px 55px rgba(63,54,96,.14);
  --shadow-soft:0 8px 28px rgba(54,68,94,.09);
  --shadow-control:0 4px 12px rgba(90,63,111,.12);
  --sidebar:264px;
}

[data-theme="dark"]{
  --bg:#171722;
  --surface:#22222f;
  --surface-2:#2c2534;
  --surface-3:#1d3343;
  --text:#f7f5fa;
  --text-soft:#b7b5c3;
  --line:#3c3b4b;
  --primary:#ce8cda;
  --primary-strong:#e1a7ea;
  --primary-soft:#3a2942;
  --primary-soft-2:#4b3556;
  --cyan:#70bde9;
  --cyan-soft:#203846;
  --coral:#f08a75;
  --coral-soft:#412720;
  --amber:#e5b654;
  --amber-soft:#3b3019;
  --success:#68d475;
  --success-soft:#213d29;
  --shadow:0 22px 55px rgba(0,0,0,.34);
  --shadow-soft:0 8px 28px rgba(0,0,0,.22);
}

html{scroll-behavior:smooth;background:var(--bg)}
body,button,input,textarea,select{font-family:Manrope,Arial,"Noto Sans CJK SC","Noto Sans SC","Source Han Sans SC","Microsoft YaHei","PingFang SC","Hiragino Sans GB","Heiti SC",sans-serif}
body{font-size:14px;font-weight:500;background:var(--bg)}
button,a,input,textarea,select{letter-spacing:0}
button:focus:not(:focus-visible),a:focus:not(:focus-visible),input:focus:not(:focus-visible),textarea:focus:not(:focus-visible),select:focus:not(:focus-visible){outline:0}
button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid color-mix(in srgb,var(--cyan) 35%,transparent);outline-offset:2px}

.brand-logo{display:block;width:150px;height:auto;max-height:44px;object-fit:contain;object-position:left center}
.brand-logo-light{width:170px}
.brand-mark{border-radius:8px}
.topbar-logo{display:none;width:126px;height:auto}
.eyebrow,.page-kicker{font-weight:800;color:var(--primary)}

.icon-btn,.btn,.nav-btn,.school-list-row,.section-tab,.course-lesson-row,.studio-template,.learn-option,.learn-token{
  transition:background-color .2s ease,border-color .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,opacity .2s ease;
}
.icon-btn{border-radius:10px}
.icon-btn:hover{background:var(--surface-2);color:var(--primary);transform:translateY(-1px)}
.icon-btn:active{transform:scale(.95)}
.btn{min-height:44px;border-radius:9px;padding:10px 17px;font-weight:700;box-shadow:none}
.btn:hover{border-color:color-mix(in srgb,var(--primary) 55%,var(--line));box-shadow:0 4px 14px rgba(84,44,100,.08);transform:translateY(-1px)}
.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 7px 18px rgba(120,37,141,.2)}
.btn.primary:hover{background:var(--primary-strong);border-color:var(--primary-strong);box-shadow:0 9px 22px rgba(120,37,141,.26)}
.btn.soft{background:var(--primary-soft);border-color:transparent;color:var(--primary)}
.btn.small{min-height:36px;border-radius:8px;padding:7px 12px}
.btn:disabled,.icon-btn:disabled{cursor:not-allowed;transform:none;box-shadow:none}

.field{gap:9px;margin:18px 0;font-size:12px;font-weight:700;color:var(--text)}
.field input,.field textarea,.field select,.text-input,.select-input,.textarea-input{
  min-height:46px;border-color:var(--line);border-radius:10px;padding:11px 14px;background:var(--surface);font-weight:500;
}
.field input:hover,.field textarea:hover,.field select:hover{border-color:#c9d6e2}
.field input:focus,.field textarea:focus,.field select:focus,.text-input:focus,.select-input:focus,.textarea-input:focus{
  border-color:var(--primary);box-shadow:0 0 0 4px color-mix(in srgb,var(--primary) 12%,transparent)
}
.field input[type="checkbox"],.field input[type="radio"]{width:18px!important;height:18px!important;min-height:18px!important;margin:0;padding:0!important;flex:0 0 18px;border:1px solid var(--line);box-shadow:none!important;accent-color:var(--primary)}
.check-column{gap:5px;max-height:340px;overflow-y:auto;padding:5px 2px}
.check-column label{display:grid;grid-template-columns:18px minmax(0,1fr);gap:11px;min-height:42px;padding:8px 10px;border-radius:8px;color:var(--text);font-size:13px;line-height:1.45}
.check-column label:hover{background:var(--surface-3)}
.check-column label>span{min-width:0;overflow-wrap:anywhere}
.modal-actions{flex-wrap:wrap}
.modal-actions>.btn.danger:first-child{margin-right:auto}
.school-entry [data-entry-delete]{color:var(--coral)}
.class-delete-summary{display:flex;align-items:center;gap:14px}
.class-delete-summary>span{display:grid;width:44px;height:44px;flex:0 0 44px;place-items:center;border-radius:9px;background:var(--coral-soft);color:var(--coral)}
.class-delete-summary>span svg{width:20px;height:20px}
.class-delete-summary h3{margin:0 0 4px;font-size:17px}
.class-delete-summary p{margin:0;color:var(--text-soft);line-height:1.5}
.class-delete-effects{display:grid;gap:10px;margin-top:20px;padding-top:18px;border-top:1px solid var(--line)}
.class-delete-effects p{display:flex;align-items:flex-start;gap:10px;margin:0;color:var(--text-soft);font-size:12px;line-height:1.55}
.class-delete-effects svg{width:17px;height:17px;flex:0 0 17px;margin-top:1px;color:var(--primary)}
.class-delete-effects p:first-child svg{color:var(--coral)}

.auth-form h2{font-weight:800}
.auth-form-wrap{background:var(--surface)}
.auth-form .mobile-brand{margin-bottom:48px}
.auth-form .input-icon>svg{left:15px;top:50%;z-index:1;transform:translateY(-50%);pointer-events:none}
.auth-form .input-icon>input{padding-left:46px!important}
.auth-message h1{font-weight:800}
.auth-visual::after{background:linear-gradient(180deg,rgba(43,22,55,.2),rgba(33,22,59,.86))}

.sidebar{background:var(--surface);border-color:var(--line)}
.sidebar-head{height:74px;flex-basis:74px;padding:0 22px}
.brand{font-size:0}
.nav-list{gap:3px;padding:18px 12px}
.nav-btn{min-height:46px;border-radius:10px;padding:11px 13px;font-size:13px;font-weight:650}
.nav-btn:hover{background:var(--surface-3);color:var(--text)}
.nav-btn.active{background:var(--primary-soft);color:var(--primary);box-shadow:inset 3px 0 var(--primary)}
.nav-btn.active svg{stroke-width:2.4}
.nav-label{margin:18px 13px 6px;color:#9293a4;font-size:9px}
.sidebar-bottom{padding:12px}
.profile-mini{border-radius:10px}
.avatar{background:var(--cyan-soft);color:var(--cyan);font-weight:800}
.main-shell{
  background-color:var(--bg);
  background-image:
    radial-gradient(circle at -2% 104%,color-mix(in srgb,var(--primary) 11%,var(--bg)) 0 250px,transparent 251px),
    radial-gradient(circle at -2% calc(104% - 310px),color-mix(in srgb,var(--primary) 8%,var(--bg)) 0 195px,transparent 196px),
    radial-gradient(circle at 102% 2%,color-mix(in srgb,var(--cyan) 8%,var(--bg)) 0 155px,transparent 156px);
  background-repeat:no-repeat;
  background-attachment:fixed;
}
.topbar{height:74px;padding:0 30px;background:color-mix(in srgb,var(--surface) 94%,transparent);border-color:var(--line);backdrop-filter:blur(18px)}
.topbar h1{font-size:20px;font-weight:800}
.top-profile{border-radius:10px}
.page-content{width:min(1460px,100%);padding:30px 34px 100px}
.page-content>*{animation:l2g-page-in .34s cubic-bezier(.2,.75,.25,1) both}
.page-head{align-items:center;margin-bottom:24px}
.page-head h2{margin:0 0 5px;font-size:25px;line-height:1.25;font-weight:800}
.page-head p,.school-section-description{max-width:760px;color:var(--text-soft);line-height:1.65}

.panel,.stat-card,.course-card,.studio-course,.school-entry{
  border:1px solid var(--line);border-radius:10px;background:var(--surface);box-shadow:var(--shadow-soft)
}
.panel{padding:24px}
.stat-card{padding:22px}
.stat-value{font-size:30px;font-weight:800}
.stat-icon{border-radius:9px}
.courses-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.course-card{overflow:hidden}
.course-card:hover{border-color:color-mix(in srgb,var(--primary) 28%,var(--line));box-shadow:0 16px 40px rgba(57,65,94,.13);transform:translateY(-3px)}
.course-cover{aspect-ratio:16/9;background:var(--cyan-soft)}
.course-cover img{transition:transform .45s cubic-bezier(.2,.75,.25,1)}
.course-card:hover .course-cover img{transform:scale(1.035)}
.course-body{padding:22px}
.course-body h3{font-size:18px;font-weight:800}
.status-badge{border-radius:999px;font-weight:700}
.school-list-row{border-radius:10px}
.school-list-row:hover{background:var(--surface-3);transform:translateX(2px)}
.empty-state{border-radius:10px}

.school-filter{padding:12px;border:1px solid var(--line);border-radius:11px;background:var(--surface);box-shadow:var(--shadow-soft)}
.school-search{position:relative;min-height:46px!important;overflow:hidden;border-radius:9px!important;background:var(--bg)!important;padding:0 14px 0 44px!important}
.school-search>svg{position:absolute!important;left:15px!important;top:50%!important;width:18px!important;height:18px!important;transform:translateY(-50%);pointer-events:none;color:var(--text-soft)}
.school-search input{height:44px!important;padding:0!important;line-height:44px!important;background:transparent!important}
.school-search:focus-within{outline:0!important;border-color:var(--primary)!important;box-shadow:0 0 0 4px color-mix(in srgb,var(--primary) 11%,transparent)}
.school-filter select{min-height:46px;border-radius:9px}
.input-icon.search{position:relative;min-height:46px;width:min(430px,100%);overflow:hidden;border:1px solid var(--line);border-radius:9px;background:var(--surface)}
.input-icon.search>svg{position:absolute!important;left:15px!important;top:50%!important;width:18px!important;height:18px!important;transform:translateY(-50%)!important;pointer-events:none;color:var(--text-soft)}
.input-icon.search>input{width:100%!important;height:44px!important;min-height:44px!important;border:0!important;padding:0 14px 0 44px!important;background:transparent!important;box-shadow:none!important;line-height:44px!important}
.input-icon.search:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px color-mix(in srgb,var(--primary) 11%,transparent)}

.modal-backdrop{background:rgba(22,18,31,.5);backdrop-filter:blur(7px)}
.modal{border-radius:14px;box-shadow:0 28px 80px rgba(28,23,39,.24);animation:l2g-modal-in .25s cubic-bezier(.2,.75,.25,1)}
.modal.wide{width:min(1040px,100%)}
.modal-head{padding:19px 22px}
.modal-body{padding:22px}
.modal-actions{padding:16px 22px}
.assistant-drawer,.support-panel{box-shadow:-24px 0 70px rgba(39,28,50,.18)}
.support-launcher{border-radius:28px!important;box-shadow:0 12px 32px rgba(67,43,82,.2)!important}
.support-launcher:hover{border-color:var(--primary);transform:translateY(-2px)}
html[data-page="chats"] .support-launcher{bottom:94px!important}
.support-launcher-icon,.support-head-icon{background:var(--primary)!important;color:#fff!important}
.desktop-student-notification{display:none}
[data-theme="dark"] .btn.primary{color:#fff}
[data-theme="dark"] .brand-logo:not(.brand-logo-light),[data-theme="dark"] .topbar-logo{content:url("brand-logo-white.png?v=1")}
body:has(.modal-backdrop:not(.hidden)){overflow:hidden}

/* Desktop learner header from the Figma cabinet. */
@media (min-width:1100px){
  html[data-role="student"]:not(.embed-mode) .sidebar{
    width:100%;height:72px;inset:0 0 auto;display:flex;flex-direction:row;align-items:stretch;padding:0 34px;border:0;border-bottom:1px solid var(--line);box-shadow:0 3px 18px rgba(36,47,67,.05)
  }
  html[data-role="student"]:not(.embed-mode) .sidebar-head{height:71px;flex:0 0 158px;margin:0 28px 0 0;padding:0;border:0}
  html[data-role="student"]:not(.embed-mode) .brand-logo{width:137px;max-height:42px}
  html[data-role="student"]:not(.embed-mode) .nav-list{display:flex;flex:1;min-width:0;align-items:stretch;gap:2px;padding:0;overflow:visible}
  html[data-role="student"]:not(.embed-mode) .nav-btn{position:relative;width:auto;min-width:0;min-height:71px;padding:0 14px;border-radius:0;background:transparent!important;box-shadow:none!important;font-size:12px;color:var(--text);white-space:nowrap}
  html[data-role="student"]:not(.embed-mode) .nav-btn::after{content:"";position:absolute;right:10px;bottom:-1px;left:10px;height:3px;border-radius:3px 3px 0 0;background:var(--primary);transform:scaleX(0);transition:transform .22s ease}
  html[data-role="student"]:not(.embed-mode) .nav-btn:not(.active):hover::after{transform:scaleX(0)}
  html[data-role="student"]:not(.embed-mode) .nav-btn.active{color:var(--primary)}
  html[data-role="student"]:not(.embed-mode) .nav-btn.active::after{transform:scaleX(1)}
  html[data-role="student"]:not(.embed-mode) .nav-btn svg,html[data-role="student"]:not(.embed-mode) .nav-label{display:none}
  html[data-role="student"]:not(.embed-mode) .sidebar-bottom{display:flex;align-items:center;flex:0 0 auto;margin:0 0 0 18px;padding:0;border:0}
  html[data-role="student"]:not(.embed-mode) .desktop-student-notification{display:grid;margin-right:5px}
  html[data-role="student"]:not(.embed-mode) .profile-mini{gap:9px;margin:0;padding:6px;background:transparent}
  html[data-role="student"]:not(.embed-mode) .profile-mini .profile-copy{display:none}
  html[data-role="student"]:not(.embed-mode) .profile-mini .avatar{width:38px;height:38px}
  html[data-role="student"]:not(.embed-mode) .main-shell{margin-left:0;padding-top:72px}
  html[data-role="student"]:not(.embed-mode) .topbar{display:none}
  html[data-role="student"]:not(.embed-mode) .page-content{max-width:1240px;padding:38px 38px 110px}
  html.learning-mode[data-role="student"]:not(.embed-mode) .page-content{max-width:none;padding:0 46px 100px}
}

/* Course and expert chats. */
.chat-workspace{display:grid;grid-template-columns:320px minmax(0,1fr);height:clamp(520px,calc(100dvh - 220px),760px);min-height:0;overflow:hidden;border:1px solid var(--line);border-radius:10px;background:var(--surface);box-shadow:var(--shadow-soft)}
.chat-room-list{min-width:0;min-height:0;display:flex;flex-direction:column;overflow:hidden;border-right:1px solid var(--line);background:var(--surface)}
.chat-room-list-head{display:flex;align-items:center;justify-content:space-between;min-height:70px;padding:18px 20px;border-bottom:1px solid var(--line)}
.chat-room-list-head h2{margin:0;font-size:17px}
.chat-room-list-head span{color:var(--text-soft);font-size:11px}
.chat-room-items{display:grid;align-content:start;flex:1;min-height:0;overflow-y:auto;padding:9px}
.chat-room-button{position:relative;width:100%;display:grid;grid-template-columns:42px minmax(0,1fr) auto;align-items:center;gap:11px;border:0;border-radius:8px;padding:12px;background:transparent;color:var(--text);text-align:left;cursor:pointer;transition:background .18s ease,color .18s ease}
.chat-room-button:hover{background:var(--surface-3)}
.chat-room-button.active{background:var(--primary-soft);color:var(--primary)}
.chat-room-icon{width:42px;height:42px;display:grid;place-items:center;border-radius:8px;background:var(--cyan-soft);color:var(--cyan);overflow:hidden}
.chat-room-icon.expert{background:var(--primary-soft);color:var(--primary)}
.chat-room-icon{position:relative}
.chat-room-brand{position:absolute;inset:0;background:var(--cyan-soft) url("brand-logo.png?v=1") no-repeat 5px center;background-size:auto 32px}
.chat-room-icon img{width:100%;height:100%;object-fit:cover}
.chat-room-cover{position:relative;z-index:1}
.chat-room-cover[hidden]{display:none}
.chat-room-icon svg{width:19px}
.chat-room-copy{min-width:0}
.chat-room-copy strong,.chat-room-copy small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chat-room-copy strong{font-size:13px}
.chat-room-copy small{margin-top:4px;color:var(--text-soft);font-size:11px}
.chat-room-unread{min-width:20px;height:20px;display:grid;place-items:center;border-radius:10px;padding:0 6px;background:var(--primary);color:#fff;font-size:10px;font-weight:800}
.chat-room-view{min-width:0;min-height:0;display:grid;grid-template-rows:auto minmax(0,1fr) auto;overflow:hidden;background:var(--bg)}
.chat-dialog-head{min-height:70px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:15px 20px;border-bottom:1px solid var(--line);background:var(--surface)}
.chat-dialog-head>div{min-width:0}
.chat-dialog-head h2{margin:0;font-size:16px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chat-dialog-head p{margin:5px 0 0;color:var(--text-soft);font-size:11px}
.chat-dialog-messages{display:flex;flex-direction:column;gap:10px;min-height:0;overflow-y:auto;overscroll-behavior:contain;scrollbar-gutter:stable;padding:24px}
.chat-dialog-empty{height:100%;display:grid;place-items:center;text-align:center;color:var(--text-soft)}
.chat-dialog-empty span{width:48px;height:48px;display:grid;place-items:center;margin:0 auto 12px;border-radius:50%;background:var(--primary-soft);color:var(--primary)}
.chat-bubble{max-width:min(72%,620px);align-self:flex-start;padding:11px 13px;border:1px solid var(--line);border-radius:8px 8px 8px 2px;background:var(--surface);box-shadow:0 5px 16px rgba(45,52,71,.05)}
.chat-bubble.mine{align-self:flex-end;border-color:transparent;border-radius:8px 8px 2px 8px;background:var(--primary);color:#fff}
.chat-bubble strong,.chat-bubble small{display:block}
.chat-bubble strong{margin-bottom:5px;font-size:10px;color:var(--cyan)}
.chat-bubble.mine strong{color:rgba(255,255,255,.8)}
.chat-bubble p{margin:0;line-height:1.5;overflow-wrap:anywhere}
.chat-bubble small{margin-top:6px;color:var(--text-soft);font-size:9px;text-align:right}
.chat-bubble.mine small{color:rgba(255,255,255,.72)}
.chat-dialog-composer{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1fr) 42px;gap:9px;padding:14px 18px;border-top:1px solid var(--line);background:var(--surface)}
.chat-dialog-composer textarea{min-height:44px;max-height:110px;resize:vertical;border:1px solid var(--line);border-radius:8px;padding:11px 13px;background:var(--surface);color:var(--text)}
.chat-dialog-composer textarea:focus{outline:0;border-color:var(--primary);box-shadow:0 0 0 4px color-mix(in srgb,var(--primary) 11%,transparent)}
.chat-dialog-composer .send-btn{width:42px;height:42px;align-self:end;background:var(--primary);color:#fff}

/* Course video practice. */
.chat-page-head{margin-bottom:14px}
.chat-view-tabs{display:inline-flex;gap:4px;margin:0 0 18px;padding:4px;border:1px solid var(--line);border-radius:10px;background:var(--surface)}
.chat-view-tabs button{min-height:38px;display:flex;align-items:center;gap:8px;border:0;border-radius:7px;padding:8px 15px;background:transparent;color:var(--text-soft);font-weight:750;cursor:pointer;transition:background .2s ease,color .2s ease,box-shadow .2s ease}
.chat-view-tabs button:hover{color:var(--text)}
.chat-view-tabs button.active{background:var(--primary);color:#fff;box-shadow:var(--shadow-control)}
.chat-view-tabs svg{width:17px;height:17px}
.course-practice-btn{margin-top:4px}
.roulette-lobby{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(300px,.8fr);gap:44px;align-items:center;min-height:430px;padding:52px;border:1px solid var(--line);border-radius:12px;background:var(--surface);box-shadow:var(--shadow-soft)}
.roulette-lobby-copy{max-width:650px}
.roulette-main-icon{width:64px;height:64px;display:grid;place-items:center;margin-bottom:22px;border-radius:14px;background:var(--cyan-soft);color:var(--cyan)}
.roulette-main-icon svg{width:30px;height:30px}
.roulette-lobby h2{margin:9px 0 12px;font-size:30px;line-height:1.2}
.roulette-lobby p{max-width:570px;margin:0;color:var(--text-soft);font-size:15px;line-height:1.65}
.roulette-start-controls{padding:24px;border-left:1px solid var(--line)}
.roulette-start-controls .field{margin:0 0 16px}
.roulette-start-controls .btn{width:100%}
.roulette-privacy{grid-column:1/-1;display:flex;align-items:center;gap:12px;padding-top:22px;border-top:1px solid var(--line);color:var(--success)}
.roulette-privacy>svg{width:21px;height:21px}
.roulette-privacy strong,.roulette-privacy small{display:block}
.roulette-privacy small{margin-top:3px;color:var(--text-soft);font-size:11px}
.roulette-stage{display:grid;gap:12px}
.roulette-video-shell{position:relative;width:100%;height:clamp(480px,calc(100dvh - 270px),720px);min-height:0;overflow:hidden;border-radius:12px;background:#18161d;box-shadow:0 18px 48px rgba(27,22,34,.22)}
.roulette-remote-video{width:100%;height:100%;display:block;object-fit:cover;background:#18161d}
.roulette-remote-placeholder{position:absolute;inset:0;display:grid;place-items:center;color:#b9b4c1}
.roulette-remote-placeholder span{width:82px;height:82px;display:grid;place-items:center;border:1px solid rgba(255,255,255,.16);border-radius:50%;background:rgba(255,255,255,.08)}
.roulette-remote-placeholder svg{width:36px;height:36px}
.roulette-video-shell.has-remote .roulette-remote-placeholder{display:none}
.roulette-call-status{position:absolute;top:22px;left:22px;display:flex;align-items:center;gap:11px;max-width:min(430px,calc(100% - 290px));padding:10px 14px;border-radius:9px;background:rgba(22,20,27,.78);color:#fff;backdrop-filter:blur(14px)}
.roulette-call-status strong,.roulette-call-status small{display:block}
.roulette-call-status strong{font-size:12px}
.roulette-call-status small{margin-top:3px;color:rgba(255,255,255,.68);font-size:10px;overflow-wrap:anywhere}
.roulette-status-dot{width:9px;height:9px;flex:0 0 9px;border-radius:50%;background:#f2c94c;box-shadow:0 0 0 5px rgba(242,201,76,.13);animation:roulette-pulse 1.4s ease-in-out infinite}
.roulette-call-status.connected .roulette-status-dot{background:#4fd17a;box-shadow:0 0 0 5px rgba(79,209,122,.14);animation:none}
.roulette-call-status.error .roulette-status-dot{background:#f25c62;box-shadow:0 0 0 5px rgba(242,92,98,.14);animation:none}
.roulette-local{position:absolute;top:22px;right:22px;width:clamp(150px,18vw,230px);aspect-ratio:4/3;overflow:hidden;border:2px solid rgba(255,255,255,.8);border-radius:10px;background:#302d37;box-shadow:0 10px 32px rgba(0,0,0,.28)}
.roulette-local video{width:100%;height:100%;display:block;object-fit:cover;transform:scaleX(-1)}
.roulette-local>span{display:none;position:absolute;inset:0;place-items:center;color:#d4d0da}
.roulette-local>span svg{width:28px;height:28px}
.roulette-local.camera-off video{visibility:hidden}
.roulette-local.camera-off>span{display:grid}
.roulette-local small{position:absolute;left:9px;bottom:8px;padding:3px 7px;border-radius:5px;background:rgba(17,16,21,.68);color:#fff;font-size:9px}
.roulette-controls{position:absolute;right:0;bottom:22px;left:0;display:flex;justify-content:center;gap:11px;padding:0 16px}
.roulette-control{width:48px;height:48px;display:grid;place-items:center;border:1px solid rgba(255,255,255,.2);border-radius:50%;background:rgba(255,255,255,.16);color:#fff;cursor:pointer;backdrop-filter:blur(12px);transition:transform .18s ease,background .18s ease}
.roulette-control:hover{background:rgba(255,255,255,.27);transform:translateY(-2px)}
.roulette-control:active{transform:scale(.94)}
.roulette-control.off{background:#55515e}
.roulette-control.next{margin-left:8px;background:var(--cyan)}
.roulette-control.end{background:var(--coral)}
.roulette-control:disabled{opacity:.42;cursor:not-allowed;transform:none}
.roulette-control svg{width:20px;height:20px}
.roulette-session-meta{min-height:46px;display:flex;align-items:center;gap:20px;padding:0 4px;color:var(--text-soft);font-size:11px}
.roulette-session-meta span{display:flex;align-items:center;gap:7px;min-width:0}
.roulette-session-meta span:first-child{color:var(--text);font-weight:700}
.roulette-session-meta svg{width:15px;height:15px}
.roulette-session-meta .btn{margin-left:auto}
.exercise-unlimited strong{min-height:46px;display:flex;align-items:center;gap:9px;border:1px solid var(--line);border-radius:10px;padding:11px 14px;background:var(--success-soft);color:var(--success)}
.exercise-unlimited strong svg{width:18px;height:18px}
.exercise-unlimited small{color:var(--text-soft);font-weight:500;line-height:1.45}

/* Student blog. */
.blog-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.blog-card{display:grid;grid-template-columns:180px minmax(0,1fr);min-height:180px;overflow:hidden;border:1px solid var(--line);border-radius:10px;background:var(--surface);box-shadow:var(--shadow-soft)}
.blog-card-cover{height:100%;min-height:180px;background:var(--cyan-soft)}
.blog-card-cover img{width:100%;height:100%;object-fit:cover}
.blog-card-cover.placeholder{display:grid;place-items:center;color:var(--cyan)}
.blog-card-cover.placeholder svg{width:34px;height:34px}
.blog-card-body{min-width:0;padding:22px}
.blog-card-meta{display:flex;align-items:center;gap:8px;margin-bottom:10px;color:var(--cyan);font-size:10px;font-weight:800;text-transform:uppercase}
.blog-card h2{margin:0 0 9px;font-size:18px;line-height:1.35}
.blog-card p{margin:0;color:var(--text-soft);line-height:1.65}
.blog-card .btn{margin-top:16px}
.blog-article img{width:100%;max-height:360px;object-fit:cover;border-radius:8px}
.blog-article p{font-size:14px;line-height:1.75}
.blog-article small{color:var(--text-soft)}

/* Lesson player and Figma exercise components. */
html.learning-mode{background:var(--bg)}
html.learning-mode .main-shell{background-color:var(--bg)}
.learn-player{min-height:calc(100dvh - 72px);display:grid;grid-template-rows:auto auto auto minmax(390px,1fr) auto;gap:0}
.learn-heading{display:grid;grid-template-columns:44px minmax(0,1fr) auto;align-items:center;gap:18px;min-height:92px;padding:14px 0 12px;border-bottom:1px solid var(--line)}
.learn-heading>div{min-width:0;text-align:center}
.learn-heading>div>span:not(.learn-points-chip){display:block;color:#6ba5c7;font-size:11px;font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.learn-heading h1{margin:5px 0 0;font-size:22px;line-height:1.25;font-weight:600;overflow-wrap:anywhere}
.learn-heading>.icon-btn{width:42px;height:42px;border:1px solid var(--line);border-radius:50%;background:var(--surface)}
.learn-heading>.btn{border:0;background:transparent;color:var(--text-soft);box-shadow:none}
.learn-heading>.btn:hover{color:var(--primary);transform:none}
.learn-progress{width:100%;height:4px;display:grid;grid-template-columns:repeat(var(--segments,1),minmax(0,1fr));gap:2px;overflow:hidden;border-radius:0;background:transparent;margin:0}
.learn-progress .learn-progress-segment{display:block;width:auto!important;height:4px;border-radius:0;background:var(--line);overflow:hidden}
.learn-progress-segment::after{content:"";display:block;width:0;height:100%;background:var(--primary);transition:width .28s ease}
.learn-progress-segment.done::after{width:100%}
.learn-progress-segment.current::after{width:50%}
.learn-step-meta{display:flex;justify-content:space-between;gap:18px;padding:14px 0 6px;color:#75a7c4;font-size:11px;font-weight:600}
.learn-step-meta span:last-child{color:var(--cyan);font-weight:800}
.learn-stage{width:min(1040px,100%);margin:0 auto;padding:26px 0 38px;align-self:center}
.learn-stage>h2{max-width:870px;margin:0 auto 28px;font-size:25px;line-height:1.4;font-weight:500;text-align:center;overflow-wrap:anywhere}
.learn-question-scene{position:relative;width:100%;min-height:430px;display:flex;flex-direction:column;justify-content:center;padding:58px 54px;isolation:isolate;overflow:hidden}
.learn-question-scene>h2{max-width:870px;margin:0 auto 28px;font-size:25px;line-height:1.4;font-weight:500;text-align:center;overflow-wrap:anywhere}
.learn-question-scene.background-soft::before,.learn-question-scene.background-custom::before{content:"";position:absolute;z-index:-1;inset:0;pointer-events:none}
.learn-question-scene.background-soft::before{background:radial-gradient(circle at 0 100%,rgba(111,191,235,.17) 0 13%,transparent 13.4%),radial-gradient(circle at 0 100%,rgba(140,83,174,.10) 0 23%,transparent 23.4%),radial-gradient(circle at 100% 0,rgba(255,151,139,.10) 0 16%,transparent 16.4%)}
.learn-question-scene.background-custom::before{background-image:var(--exercise-bg);background-repeat:no-repeat;background-position:center;background-size:cover;opacity:.96}
.learn-question-scene.background-none{padding-right:0;padding-left:0}
.learn-exercise,.learn-material{position:relative;width:min(860px,100%);min-height:190px;margin:0 auto;padding:32px 38px;border:1px solid var(--line);border-radius:22px;background:var(--surface);box-shadow:0 12px 32px rgba(69,74,99,.09)}
.learn-exercise.has-visual{width:min(980px,100%)}
.learn-material{line-height:1.75}
.learn-material .studio-image,.learn-context .studio-image{max-height:520px;border-radius:14px}
.learn-material .studio-video,.learn-context .studio-video{border-radius:14px}
.learn-context{width:min(860px,100%);max-height:none;margin:0 auto 20px;padding:20px 24px;border:1px solid var(--line);border-radius:16px;background:var(--bg);box-shadow:none}
.learn-context summary{margin:0;list-style:none;color:var(--primary);font-weight:700}
.learn-context[open] summary{margin-bottom:14px}
.learn-context summary::-webkit-details-marker{display:none}
.learn-instruction{display:block;margin:0 0 14px;color:var(--text-soft);font-size:12px;text-align:center}
.learn-hint{display:flex;align-items:center;gap:9px;width:max-content;max-width:100%;margin:0 auto 18px;padding:8px 12px;border-radius:9px;background:var(--amber-soft);color:var(--amber);font-size:12px}
.learn-hint svg{width:16px;height:16px}
.learn-prompt-media{display:grid;place-items:center;gap:14px;margin:0 auto 24px}
.learn-prompt-media img{max-width:min(620px,100%);max-height:360px;border-radius:14px;object-fit:contain}
.learn-prompt-media video{width:min(700px,100%);max-height:440px;border-radius:14px;background:#101018}
.learn-audio{width:min(620px,100%);display:grid;grid-template-columns:46px minmax(0,1fr) auto;align-items:center;gap:14px;margin:0 auto;padding:13px 16px;border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow-control)}
.learn-audio button{width:40px;height:40px;display:grid;place-items:center;border:0;border-radius:50%;background:var(--primary);color:#fff;cursor:pointer}
.learn-audio button svg{width:19px;height:19px;fill:currentColor}
.learn-audio-track{height:30px;display:grid;grid-template-columns:repeat(42,minmax(0,1fr));align-items:center;gap:2px;overflow:hidden;cursor:pointer}
.learn-audio-track i{width:auto;min-width:0;border-radius:2px;background:color-mix(in srgb,var(--primary) 52%,#d8d6e1);transform-origin:center}
.learn-audio-track i:nth-child(4n){height:9px}.learn-audio-track i:nth-child(4n+1){height:18px}.learn-audio-track i:nth-child(4n+2){height:26px}.learn-audio-track i:nth-child(4n+3){height:14px}
.learn-audio.playing .learn-audio-track i{animation:l2g-wave .8s ease-in-out infinite alternate}
.learn-audio-time{min-width:54px;color:var(--text-soft);font-size:11px;text-align:right}
.learn-audio audio{display:none}
.studio-wordwall{width:min(900px,100%);margin:0 auto;overflow:hidden;border:1px solid var(--line);border-radius:16px;background:var(--surface);box-shadow:var(--shadow-soft)}
.studio-wordwall>header{min-height:68px;display:flex;align-items:center;gap:12px;padding:13px 16px;border-bottom:1px solid var(--line)}
.studio-wordwall>header>span{width:40px;height:40px;display:grid;place-items:center;flex:0 0 40px;border-radius:10px;background:var(--primary-soft);color:var(--primary)}
.studio-wordwall>header>span svg{width:20px;height:20px}.studio-wordwall>header>div{min-width:0;flex:1}.studio-wordwall>header strong,.studio-wordwall>header small{display:block}.studio-wordwall>header small{margin-top:3px;color:var(--text-soft);font-size:10px}.studio-wordwall iframe{display:block;width:100%;height:clamp(460px,62dvh,720px);border:0;background:#fff}
.studio-wordwall-help{display:flex;align-items:flex-start;gap:9px;margin:10px 0 16px;padding:11px 13px;border-radius:9px;background:var(--cyan-soft);color:var(--text-soft);font-size:11px;line-height:1.5}.studio-wordwall-help svg{width:17px;height:17px;flex:0 0 17px;color:var(--cyan)}
.exercise-background-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(180px,.7fr);gap:14px}.exercise-background-preview{min-height:116px;display:grid;place-items:center;overflow:hidden;margin-top:8px;border:1px dashed var(--line);border-radius:10px;background:var(--bg)}.exercise-background-preview.mobile{min-height:160px}.exercise-background-preview img{width:100%;height:116px;object-fit:cover}.exercise-background-preview.mobile img{height:160px}.exercise-background-preview .muted{font-size:10px}

.learn-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:0;padding:0;border:0}
.learn-option{position:relative;min-height:60px;display:flex;align-items:center;gap:13px;padding:14px 18px;border:1px solid var(--line);border-radius:20px;background:var(--surface);cursor:pointer;box-shadow:0 3px 12px rgba(61,74,97,.05)}
.learn-option:hover{border-color:color-mix(in srgb,var(--primary) 50%,var(--line));box-shadow:0 8px 20px rgba(79,58,94,.1);transform:translateY(-1px)}
.learn-option:has(input:checked){border-color:var(--primary);background:var(--primary-soft);box-shadow:0 0 0 2px color-mix(in srgb,var(--primary) 10%,transparent)}
.learn-option input{width:18px;height:18px;flex:0 0 18px;margin:0;accent-color:var(--primary)}
.learn-option-copy{min-width:0;display:flex;align-items:center;gap:12px;font-size:15px;line-height:1.4;overflow-wrap:anywhere}
.learn-option-media{width:76px;height:58px;flex:0 0 76px;overflow:hidden;border-radius:11px;background:var(--surface-3)}
.learn-option-media img{width:100%;height:100%;object-fit:cover}
.learn-option-media .learn-audio{width:76px;display:flex;padding:0;border:0;box-shadow:none;background:transparent}
.learn-option-media .learn-audio button{width:42px;height:42px;margin:auto}
.learn-option-media .learn-audio-track,.learn-option-media .learn-audio-time{display:none}
.learn-answer{display:grid;gap:10px;color:var(--text-soft);font-size:12px;font-weight:700}
.learn-answer input{min-height:52px;border:1px solid var(--line);border-radius:14px;padding:12px 16px;background:var(--surface);font-size:16px;color:var(--text)}
.learn-passage{padding:24px 26px;border-radius:44px;background:var(--cyan-soft);font-size:16px;line-height:2.55;overflow-wrap:anywhere}
.learn-slot{display:inline-block;width:auto;min-width:130px;min-height:38px;margin:2px 3px;padding:5px 10px;border:1px solid color-mix(in srgb,var(--primary) 55%,var(--line));border-radius:16px;background:var(--surface);vertical-align:middle;color:var(--text)}
.learn-pairs{display:grid;gap:12px}
.learn-pair{display:grid;grid-template-columns:minmax(0,1fr) minmax(170px,.8fr);gap:16px;align-items:center;padding:12px 15px;border:0;border-bottom:1px solid var(--line);border-radius:0}
.learn-pair-label{min-width:0;display:flex;align-items:center;gap:12px;line-height:1.4}
.learn-pair-label img{width:88px;height:62px;border-radius:10px;object-fit:cover}
.learn-token-bank,.learn-order-answer{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:12px;min-height:56px;margin-top:18px}
.learn-order-answer{justify-content:flex-start;padding:18px;border:1px dashed color-mix(in srgb,var(--primary) 45%,var(--line));border-radius:20px;background:var(--bg)}
.learn-token{display:inline-flex;align-items:center;gap:7px;min-height:40px;padding:9px 17px;border:0;border-radius:22px;background:linear-gradient(90deg,#dee8ff,#ead8ee);color:#3c3346;font-weight:600;cursor:grab;box-shadow:0 5px 12px rgba(82,61,98,.13)}
.learn-token:hover{box-shadow:0 8px 18px rgba(82,61,98,.17);transform:translateY(-2px)}
.learn-token:active{cursor:grabbing;transform:scale(.98)}
.learn-token svg{width:14px;height:14px}
.learn-recording{display:grid;place-items:center;gap:15px;text-align:center}
.learn-record-button{width:84px;height:84px;display:grid;place-items:center;border:0;border-radius:50%;background:var(--primary);color:#fff;box-shadow:0 0 0 10px var(--primary-soft),0 12px 30px rgba(120,37,141,.22);cursor:pointer}
.learn-record-button.recording{background:var(--coral);box-shadow:0 0 0 10px var(--coral-soft),0 12px 30px rgba(228,33,37,.2);animation:l2g-pulse 1.4s infinite}
.learn-record-button svg{width:32px;height:32px}
.learn-recording-status{color:var(--text-soft);font-size:12px}
.learn-recording audio{width:min(520px,100%)}
.learn-transcript{max-width:620px;color:var(--text);font-size:14px}
.learn-feedback{width:min(860px,100%);display:flex;gap:12px;align-items:flex-start;margin:18px auto 0;padding:15px 18px;border-radius:14px;font-weight:700}
.learn-feedback.correct{background:var(--success-soft);color:var(--success)}
.learn-feedback.incorrect{background:var(--coral-soft);color:var(--coral)}
.learn-feedback small{display:block;margin-top:4px;color:var(--text-soft);font-weight:500}
.learn-footer{position:sticky;z-index:12;bottom:0;display:grid;grid-template-columns:minmax(150px,1fr) minmax(120px,1fr) minmax(150px,1fr);align-items:center;gap:16px;padding:18px 0;border-top:1px solid var(--line);background:color-mix(in srgb,var(--surface) 95%,transparent);backdrop-filter:blur(16px)}
.learn-footer>.btn:first-child{justify-self:start;min-width:170px;background:var(--surface-2);border-color:transparent;color:var(--text-soft)}
.learn-footer>small{text-align:center;color:var(--text-soft);font-size:11px}
.learn-footer-actions{justify-self:end;display:flex;gap:10px}
.learn-footer .learn-skip{min-width:150px;background:var(--surface-2);border-color:transparent;color:var(--text-soft)}
.learn-footer .btn.primary{min-width:180px}
.learn-summary{width:min(760px,100%);margin:auto;padding:44px;border:1px solid var(--line);border-radius:22px;background:var(--surface);text-align:center;box-shadow:var(--shadow-soft)}
.learn-summary>svg{width:58px;height:58px;color:var(--success)}
.learn-summary h2{margin:18px 0 8px;font-weight:800}

/* Rich exercise editor. */
.exercise-editor-layout{display:grid;grid-template-columns:224px minmax(0,1fr);gap:0;margin:-22px}
.exercise-editor-sidebar{padding:22px 14px;border-right:1px solid var(--line);background:var(--bg)}
.exercise-editor-sidebar h3{margin:0 8px 4px;font-size:14px}
.exercise-editor-sidebar>p{margin:0 8px 16px;color:var(--text-soft);font-size:11px;line-height:1.5}
.exercise-tabs{display:grid;gap:7px;margin:0}
.exercise-question-tab{width:100%;display:grid;grid-template-columns:28px minmax(0,1fr) 18px;align-items:center;gap:9px;padding:9px;border:1px solid transparent;border-radius:10px;background:transparent;text-align:left;cursor:pointer}
.exercise-question-tab:hover,.exercise-question-tab.active{border-color:var(--line);background:var(--surface)}
.exercise-question-tab.active{color:var(--primary);box-shadow:var(--shadow-control)}
.exercise-question-tab>span:first-child{width:28px;height:28px;display:grid;place-items:center;border-radius:8px;background:var(--primary-soft);font-weight:800}
.exercise-question-tab strong{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:11px}
.exercise-question-tab svg{width:15px}
.exercise-add-question{width:100%;min-height:40px;display:flex;align-items:center;justify-content:center;gap:8px;margin-top:12px;border:1px dashed var(--primary);border-radius:10px;background:transparent;color:var(--primary);font-weight:700;cursor:pointer}
.exercise-editor-main{min-width:0;padding:22px 26px}
.exercise-editor-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.exercise-editor-title h3{margin:0;font-size:17px}
.exercise-type-row{align-items:end}
.exercise-type-row .field{margin:0;flex:1}
.exercise-config-card{margin-top:18px;padding:18px;border:1px solid var(--line);border-radius:12px;background:var(--bg)}
.exercise-config-card>h4{margin:0 0 6px;font-size:13px}
.exercise-config-card>p{margin:0 0 14px;color:var(--text-soft);font-size:11px}
.exercise-asset-picker{display:grid;grid-template-columns:minmax(0,1fr) 40px 40px;align-items:center;gap:7px;padding:9px 10px;border:1px solid var(--line);border-radius:10px;background:var(--surface)}
.exercise-asset-picker>span{min-width:0}
.exercise-asset-picker strong,.exercise-asset-picker small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.exercise-asset-picker strong{font-size:11px}
.exercise-asset-picker small{margin-top:3px;color:var(--text-soft);font-size:9px}
.exercise-choice-config{display:grid;grid-template-columns:minmax(130px,.7fr) minmax(0,1fr);gap:10px;align-items:center;padding:8px 0;border-bottom:1px solid var(--line)}
.exercise-choice-config:last-child{border-bottom:0}
.exercise-choice-config>label{display:flex;align-items:center;gap:9px;min-width:0}
.exercise-choice-config>label span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.exercise-pair-config{min-width:0;padding:12px;border:1px solid var(--line);border-radius:11px;background:var(--surface)}
.exercise-pair-config .field{margin-top:0}
.exercise-media-row{display:grid;grid-template-columns:150px minmax(0,1fr) auto;gap:10px;align-items:end}
.exercise-media-preview{min-height:70px;display:grid;place-items:center;margin-top:12px;border:1px dashed var(--line);border-radius:10px;background:var(--surface);overflow:hidden}
.exercise-media-preview img{max-height:190px;object-fit:contain}
.exercise-media-preview audio,.exercise-media-preview video{width:100%}
.exercise-option-assets{display:grid;gap:8px;margin-top:12px}
.exercise-option-asset{display:grid;grid-template-columns:minmax(120px,.55fr) minmax(0,1fr);gap:10px;align-items:center}
.exercise-option-asset strong{font-size:11px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.exercise-option-asset input{min-height:38px;border:1px solid var(--line);border-radius:8px;padding:8px 10px;background:var(--surface);color:var(--text)}
.exercise-keys{border-radius:12px;background:var(--surface)}
.exercise-pair-keys{grid-template-columns:repeat(2,minmax(0,1fr))}
.exercise-editor-footer-note{display:flex;align-items:center;gap:8px;margin-top:16px;color:var(--text-soft);font-size:11px}
.exercise-editor-footer-note svg{width:16px}

@keyframes l2g-page-in{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:none}}
@keyframes l2g-modal-in{from{opacity:0;transform:translateY(14px) scale(.985)}to{opacity:1;transform:none}}
@keyframes l2g-wave{to{transform:scaleY(.55);opacity:.66}}
@keyframes l2g-pulse{50%{box-shadow:0 0 0 16px color-mix(in srgb,var(--coral) 12%,transparent),0 12px 30px rgba(228,33,37,.2)}}
@keyframes roulette-pulse{50%{opacity:.45;transform:scale(.82)}}

@media (max-width:1180px){
  .courses-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .page-content{padding-right:24px;padding-left:24px}
}

@media (max-width:1099px){
  html,body,#appScreen,.app-shell,.main-shell{max-width:100%;overflow-x:clip}
  .topbar-logo{display:block}
  html[data-role="student"] .topbar-left>div{display:none}
  html[data-role="student"] .topbar{height:66px;padding:0 18px;background:var(--surface)}
  html[data-role="student"] .topbar-left{gap:13px}
  html[data-role="student"] .main-shell{margin-left:0}
  .learn-player{min-height:calc(100dvh - 66px)}
  html.learning-mode .page-content{max-width:none;padding:0 24px 100px}
  .learn-heading{min-height:82px}
}

@media (max-width:760px){
  .main-shell{
    background-image:
      radial-gradient(circle at -4% 104%,color-mix(in srgb,var(--primary) 11%,var(--bg)) 0 156px,transparent 157px),
      radial-gradient(circle at -4% calc(104% - 205px),color-mix(in srgb,var(--primary) 8%,var(--bg)) 0 126px,transparent 127px),
      radial-gradient(circle at 104% 1%,color-mix(in srgb,var(--cyan) 8%,var(--bg)) 0 100px,transparent 101px);
  }
  .page-content{padding:22px 16px 96px}
  .top-profile>span:not(.avatar),.top-profile>svg{display:none}
  .panel{padding:18px}
  .courses-grid{grid-template-columns:1fr;gap:16px}
  .chat-workspace{grid-template-columns:1fr;grid-template-rows:auto minmax(0,1fr);height:calc(100dvh - 188px);min-height:520px}
  .chat-room-list{max-height:132px;border-right:0;border-bottom:1px solid var(--line)}
  .chat-room-list-head{min-height:58px;padding:13px 16px}
  .chat-room-items{display:flex;gap:7px;overflow-x:auto;padding:8px}
  .chat-room-button{min-width:230px;flex:0 0 230px}
  .chat-room-view{grid-template-rows:auto minmax(0,1fr) auto}
  .chat-dialog-messages{padding:18px 14px}
  .chat-bubble{max-width:88%}
  .chat-dialog-composer{padding:11px}
  .chat-view-tabs{width:100%}
  .chat-view-tabs button{flex:1;justify-content:center;padding:8px 10px}
  .roulette-lobby{grid-template-columns:1fr;gap:22px;min-height:0;padding:26px 20px}
  .roulette-lobby h2{font-size:24px}
  .roulette-start-controls{padding:20px 0 0;border-top:1px solid var(--line);border-left:0}
  .roulette-video-shell{height:calc(100dvh - 250px);min-height:390px;border-radius:10px}
  .roulette-call-status{top:14px;left:14px;max-width:calc(100% - 142px);padding:9px 11px}
  .roulette-local{top:14px;right:14px;width:112px;border-radius:8px}
  .roulette-controls{bottom:16px;gap:8px}
  .roulette-control{width:44px;height:44px}
  .roulette-session-meta{flex-wrap:wrap;gap:8px 14px}
  .roulette-session-meta .btn{width:100%;margin:4px 0 0}
  .blog-grid{grid-template-columns:1fr}
  .blog-card{grid-template-columns:120px minmax(0,1fr);min-height:150px}
  .blog-card-cover{min-height:150px}
  .blog-card-body{padding:17px}
  .page-head{align-items:stretch;flex-direction:column;gap:14px}
  .page-head>.btn,.page-head>.page-actions{align-self:flex-start}
  .school-filter{flex-direction:column;align-items:stretch}
  .school-filter select{width:100%}
  html.learning-mode .page-content{padding:0 14px 94px}
  .learn-heading{grid-template-columns:40px minmax(0,1fr) 40px;gap:8px;min-height:74px}
  .learn-heading h1{font-size:17px}
  .learn-heading>div>span:not(.learn-points-chip){font-size:9px}
  .learn-heading>.btn{width:40px;min-width:40px;padding:0;font-size:0}
  .learn-step-meta{padding:11px 2px 2px;font-size:10px}
  .learn-stage{padding:18px 0 28px}
  .learn-stage>h2{margin-bottom:18px;font-size:20px;text-align:left}
  .learn-question-scene{min-height:430px;padding:44px 0}
  .learn-question-scene>h2{margin-bottom:18px;font-size:20px;text-align:left}
  .learn-question-scene.background-custom::before{background-image:var(--exercise-bg-mobile)}
  .learn-exercise,.learn-material{min-height:160px;padding:22px 17px;border-radius:18px}
  .learn-exercise::before,.learn-material::before{display:none}
  .learn-context{padding:15px;border-radius:13px}
  .learn-options{grid-template-columns:1fr;gap:10px}
  .learn-option{min-height:54px;padding:12px 14px;border-radius:16px}
  .learn-option-media{width:68px;height:52px;flex-basis:68px}
  .learn-passage{padding:18px 15px;border-radius:25px;font-size:14px;line-height:2.4}
  .learn-pair{grid-template-columns:1fr;gap:8px;padding:11px 0}
  .learn-slot{width:100%;min-width:0}
  .learn-audio{grid-template-columns:42px minmax(0,1fr) auto;padding:11px 12px}
  .studio-wordwall iframe{height:64dvh;min-height:480px}
  .exercise-background-grid{grid-template-columns:minmax(0,1fr)}
  .learn-footer{grid-template-columns:1fr auto;padding:12px 0;gap:8px}
  .learn-footer>.btn:first-child{min-width:0;padding:9px 12px;font-size:0}
  .learn-footer>.btn:first-child svg{margin:0}
  .learn-footer>small{display:none}
  .learn-footer-actions{gap:7px}
  .learn-footer .learn-skip{min-width:0;padding:9px 12px}
  .learn-footer .btn.primary{min-width:132px}
  .support-launcher{right:14px!important;bottom:14px!important}
  html.learning-mode .support-launcher{bottom:78px!important}
  .exercise-editor-layout{display:block;margin:-22px}
  .exercise-editor-sidebar{padding:14px;border:0;border-bottom:1px solid var(--line)}
  .exercise-editor-sidebar>h3,.exercise-editor-sidebar>p{display:none}
  .exercise-tabs{display:flex;gap:7px;overflow-x:auto}
  .exercise-question-tab{width:58px;flex:0 0 58px;grid-template-columns:28px 18px;padding:7px}
  .exercise-question-tab strong{display:none}
  .exercise-add-question{width:44px;min-width:44px;margin:0;font-size:0}
  .exercise-editor-main{padding:18px}
  .exercise-media-row{grid-template-columns:1fr}
  .exercise-media-row>.btn{justify-self:start}
  .exercise-pair-keys{grid-template-columns:1fr}
  .exercise-option-asset,.exercise-choice-config{grid-template-columns:1fr}
}

@media (max-width:480px){
  .topbar{padding:0 12px!important}
  .topbar-logo{width:111px}
  .topbar-actions{gap:1px}
  .topbar-actions>.icon-btn{width:36px;height:36px;flex-basis:36px}
  .page-content{padding-right:12px;padding-left:12px}
  .page-head h2{font-size:22px}
  .course-body{padding:18px}
  .learn-heading{grid-template-columns:38px minmax(0,1fr) 38px}
  .learn-heading>.icon-btn{width:38px;height:38px}
  .learn-heading h1{font-size:15px}
  .learn-stage>h2{font-size:18px}
  .learn-exercise,.learn-material{padding:19px 13px;border-radius:15px}
  .learn-audio{grid-template-columns:38px minmax(0,1fr) 48px;gap:9px}
  .learn-audio button{width:36px;height:36px}
  .learn-footer .learn-skip{min-width:78px;padding-right:9px;padding-left:9px;font-size:10px}
  .learn-footer .btn.primary{min-width:118px;padding-right:11px;padding-left:11px}
  .support-launcher>span:nth-child(2){display:none}
  .support-launcher{width:48px!important;min-width:48px!important;height:48px!important;grid-template-columns:40px!important;gap:0!important;padding:4px!important}
  html[data-page="chats"] .support-launcher{bottom:8px!important}
  .support-launcher .support-count{position:absolute;top:-3px;right:-3px}
  .modal-actions>.btn.danger:first-child{width:100%;margin-right:0}
}

.assessment-settings{grid-template-columns:repeat(2,minmax(0,1fr));padding-bottom:20px;border-bottom:1px solid var(--line)}
.assessment-settings .field:last-child{grid-column:1/-1}
.assessment-settings .field small{color:var(--text-soft);font-size:11px;font-weight:500}
.student-result-cell{display:flex;min-width:190px;flex-direction:column;align-items:flex-start;gap:3px}
.student-result-cell>strong{font-size:18px;color:var(--text)}
.student-result-cell>small{color:var(--text-soft);white-space:nowrap}
.student-result-cell .status-badge{margin-top:3px}
.assessment-dashboard{display:grid;gap:24px}
.assessment-summary{display:grid;grid-template-columns:repeat(6,minmax(110px,1fr));gap:10px}
.assessment-summary>div{display:grid;min-height:112px;align-content:center;justify-items:start;padding:16px;border:1px solid var(--line);border-radius:8px;background:var(--surface)}
.assessment-summary>div>span{display:grid;width:30px;height:30px;margin-bottom:10px;place-items:center;border-radius:7px;background:var(--primary-soft);color:var(--primary)}
.assessment-summary>div svg{width:16px;height:16px}
.assessment-summary strong{font-size:23px;line-height:1;color:var(--text)}
.assessment-summary small{margin-top:6px;color:var(--text-soft)}
.assessment-section{display:grid;gap:13px}
.assessment-section>header h3{margin:0 0 3px;font-size:17px}
.assessment-section>header p{margin:0;color:var(--text-soft);font-size:12px}
.assessment-attempts{display:grid;gap:12px}
.assessment-attempt{overflow:hidden;border:1px solid var(--line);border-radius:8px;background:var(--surface)}
.assessment-attempt>header{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding:16px 18px}
.assessment-attempt>header>div:first-child{display:grid;justify-items:start;gap:5px}
.assessment-attempt>header>div:first-child>strong{font-size:15px}
.assessment-attempt>header small{color:var(--text-soft)}
.assessment-attempt-score{display:grid;flex:0 0 auto;justify-items:end}
.assessment-attempt-score strong{font-size:22px;color:var(--text)}
.assessment-attempt-meta{display:flex;flex-wrap:wrap;gap:8px 18px;padding:10px 18px;border-top:1px solid var(--line);background:var(--surface-2);color:var(--text-soft);font-size:11px}
.assessment-attempt>details{border-top:1px solid var(--line)}
.assessment-attempt>details>summary{padding:13px 18px;cursor:pointer;font-weight:700;color:var(--text)}
.assessment-attempt>footer{display:flex;justify-content:flex-end;padding:12px 18px;border-top:1px solid var(--line)}
.assessment-responses{display:grid;padding:0 18px 16px}
.assessment-response{display:grid;grid-template-columns:28px minmax(0,1fr);gap:10px;padding:14px 0;border-top:1px solid var(--line)}
.assessment-response-mark{display:grid;width:25px;height:25px;place-items:center;border-radius:50%;background:#eefaf4;color:#168353}
.assessment-response.incorrect .assessment-response-mark{background:#fff0f0;color:#c83f4c}
.assessment-response-mark svg{width:14px;height:14px}
.assessment-response>div{display:grid;gap:8px}
.assessment-answer{display:grid;justify-items:start;gap:3px;padding:9px 11px;border-radius:7px;background:var(--surface-2);font-size:13px}
.assessment-answer.expected{background:#eefaf4}
.assessment-answer>small{color:var(--text-soft);font-size:10px;text-transform:uppercase}
.assessment-answer>span{display:block}
.assessment-answer audio{width:min(100%,420px);height:36px}
.review-attempt-head{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.review-attempt-head>div{display:grid;gap:3px}
.review-attempt-head small{color:var(--text-soft)}
.learn-attempt-intro,.learn-attempt-result{display:grid;max-width:720px;min-height:390px;margin:0 auto;align-content:center;justify-items:center;padding:44px;text-align:center;border:1px solid var(--line);border-radius:20px;background:var(--surface);box-shadow:0 18px 50px rgba(41,30,70,.08)}
.learn-attempt-intro>span,.learn-result-icon{display:grid;width:58px;height:58px;margin-bottom:14px;place-items:center;border-radius:16px;background:var(--primary-soft);color:var(--primary)}
.learn-attempt-intro>span svg,.learn-result-icon svg{width:28px;height:28px}
.learn-attempt-intro h2,.learn-attempt-result h2{margin:0 0 10px;font-size:28px}
.learn-attempt-intro>p,.learn-attempt-result>p{max-width:520px;margin:0;color:var(--text-soft);line-height:1.55}
.learn-attempt-rules{display:grid;grid-template-columns:repeat(3,minmax(110px,1fr));width:min(100%,520px);margin:26px 0 18px;border:1px solid var(--line);border-radius:12px}
.learn-attempt-rules>div{display:grid;gap:4px;padding:15px;border-right:1px solid var(--line)}
.learn-attempt-rules>div:last-child{border-right:0}
.learn-attempt-rules strong{font-size:22px;color:var(--text)}
.learn-attempt-rules small{color:var(--text-soft)}
.learn-manual-note{display:flex!important;align-items:center;gap:7px;color:var(--primary)!important;font-weight:700}
.learn-manual-note svg{width:17px;height:17px}
.learn-result-percent{margin:10px 0 4px;font-size:52px;line-height:1;color:var(--primary)}
.learn-attempt-result.passed .learn-result-icon{background:var(--success-soft);color:var(--success)}
.learn-attempt-result.failed .learn-result-icon,.learn-attempt-result.expired .learn-result-icon{background:var(--coral-soft);color:var(--coral)}
.learn-attempt-result.pending .learn-result-icon{background:var(--amber-soft);color:var(--amber)}
.learn-attempt-result>small{margin-top:18px;color:var(--text-soft)}
.learn-result-details{width:min(100%,560px);margin-top:22px;text-align:left;border:1px solid var(--line);border-radius:10px}
.learn-result-details>summary{padding:13px 16px;cursor:pointer;font-weight:700}
.learn-result-line{display:grid;grid-template-columns:22px minmax(0,1fr);gap:8px;padding:10px 16px;border-top:1px solid var(--line);color:#168353}
.learn-result-line.incorrect{color:#c83f4c}
.learn-result-line svg{width:15px;height:15px}
.learn-result-line small{display:block;margin-top:4px;color:var(--text-soft)}
.learn-review-comment{width:100%;margin-top:14px;padding:12px 14px;border:1px solid var(--line);border-radius:8px;background:var(--surface-2);text-align:left}
.learn-review-comment p{margin:5px 0 0;white-space:pre-wrap;color:var(--text-soft)}
.learn-attempt-meta{font-weight:700;color:var(--text)}
.learn-attempt-meta strong{font-variant-numeric:tabular-nums;color:var(--primary)}
.learn-attempt-meta.ending strong{color:#c83f4c}

@media (max-width:1100px){
  .assessment-summary{grid-template-columns:repeat(3,minmax(120px,1fr))}
}

@media (max-width:760px){
  .assessment-settings{grid-template-columns:1fr}
  .assessment-settings .field:last-child{grid-column:auto}
  .assessment-summary{grid-template-columns:repeat(2,minmax(110px,1fr))}
  .assessment-attempt>header{padding:14px;gap:10px}
  .assessment-attempt-meta{padding:9px 14px}
  .assessment-responses{padding:0 14px 14px}
  .learn-attempt-intro,.learn-attempt-result{min-height:330px;padding:28px 17px;border-radius:16px}
  .learn-attempt-intro h2,.learn-attempt-result h2{font-size:23px}
  .learn-attempt-rules{grid-template-columns:repeat(3,minmax(0,1fr))}
  .learn-attempt-rules>div{padding:12px 5px}
  .learn-attempt-rules strong{font-size:18px}
  .learn-attempt-rules small{font-size:9px}
  .learn-result-percent{font-size:44px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}

/* Course -> module -> assignment authoring. */
.studio-library{min-width:0}
.studio-library-head>div:first-child{min-width:0}
html.embed-mode .studio-library-head{justify-content:space-between}
html.embed-mode .studio-library-head>div:first-child{display:block}
.studio-library-head .eyebrow{display:block;margin:10px 0 5px}
.studio-library-head p{margin:0}
.studio-library-tabs{display:inline-flex;gap:4px;margin:0 0 24px;padding:4px;border:1px solid var(--line);border-radius:10px;background:var(--surface);box-shadow:var(--shadow-soft)}
.studio-library-tabs button,.studio-level-filter button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:40px;border:0;border-radius:7px;padding:8px 18px;background:transparent;color:var(--text-soft);font:inherit;font-size:13px;font-weight:700;cursor:pointer;transition:background .2s ease,color .2s ease,box-shadow .2s ease}
.studio-library-tabs button[aria-selected=true],.studio-level-filter button[aria-pressed=true]{background:var(--primary-soft);color:var(--primary);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--primary) 16%,transparent)}
.studio-library-tabs svg,.studio-level-filter svg{width:17px;height:17px}
.studio-level-filter{display:flex;gap:5px;margin:-10px 0 22px;overflow-x:auto;padding:3px 0}
.studio-level-filter button{flex:0 0 auto;background:var(--surface)}
.studio-module-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.studio-library-module{min-width:0;overflow:hidden;border:1px solid var(--line);border-radius:8px;background:var(--surface);box-shadow:var(--shadow-soft);cursor:pointer;transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease}
.studio-library-module:hover,.studio-library-module:focus-visible{transform:translateY(-3px);border-color:color-mix(in srgb,var(--primary) 34%,var(--line));box-shadow:0 17px 38px rgba(57,65,94,.14);outline:0}
.studio-library-module>div:last-child{padding:19px}
.studio-library-module h3{margin:7px 0 8px;font-size:17px;line-height:1.4}
.studio-library-module p{min-height:42px;margin:0 0 14px;color:var(--text-soft);font-size:12px;line-height:1.65;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.studio-library-module>div:last-child>small{display:block;margin-top:14px;color:var(--text-soft);font-size:11px}
.studio-module-cover{position:relative;height:138px;display:grid;place-items:center;overflow:hidden;background:var(--cyan-soft);color:var(--cyan)}
.studio-module-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.studio-library-module:hover .studio-module-cover img{transform:scale(1.035)}
.studio-module-cover>svg{width:42px;height:42px}
.studio-module-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;color:var(--text-soft);font-size:11px}
.studio-module-meta span,.studio-course-module-copy>small,.student-module-schedule span{display:inline-flex;align-items:center;gap:6px}
.studio-module-meta svg,.studio-course-module-copy>small svg,.student-module-schedule svg{width:14px;height:14px;color:var(--primary)}
.studio-course-overview,.studio-module-overview{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;margin:0 0 24px;overflow:hidden;border:1px solid var(--line);border-radius:8px;background:var(--line);box-shadow:var(--shadow-soft)}
.studio-course-overview>div,.studio-module-overview>div{min-width:0;padding:18px 20px;background:var(--surface)}
.studio-course-overview strong,.studio-course-overview small{display:block;overflow-wrap:anywhere}
.studio-course-overview strong{font-size:16px}.studio-course-overview small{margin-top:4px;color:var(--text-soft);font-size:11px}
.studio-module-overview{grid-template-columns:repeat(3,minmax(0,1fr))}
.studio-module-overview>div{display:flex;align-items:center;gap:12px}
.studio-module-overview>div>svg{width:22px;height:22px;flex:0 0 auto;color:var(--primary)}
.studio-module-overview span{min-width:0}.studio-module-overview strong,.studio-module-overview small{display:block;overflow-wrap:anywhere}.studio-module-overview small{margin-top:4px;color:var(--text-soft);font-size:11px}
.studio-course-modules,.studio-assignment-list{display:grid;gap:14px}
.studio-course-module{display:grid;grid-template-columns:210px minmax(0,1fr) auto;min-height:178px;overflow:hidden;border:1px solid var(--line);border-radius:8px;background:var(--surface);box-shadow:var(--shadow-soft)}
.studio-course-module .studio-module-cover{height:100%;min-height:178px}
.studio-course-module-copy{min-width:0;padding:20px 22px}
.studio-course-module-copy h3{margin:7px 0 8px;font-size:18px}.studio-course-module-copy p{margin:0 0 12px;color:var(--text-soft);font-size:12px;line-height:1.6}.studio-course-module-copy>small{margin-top:7px;color:var(--text-soft);font-size:11px}
.studio-module-actions{display:flex;min-width:156px;flex-direction:column;align-items:flex-end;justify-content:space-between;padding:14px}
.studio-module-actions>span{display:flex;gap:3px}
.studio-assignment-row{display:grid;grid-template-columns:40px minmax(0,1fr) auto;align-items:center;gap:14px;width:100%;min-height:78px;border:1px solid var(--line);border-radius:8px;padding:14px 16px;background:var(--surface);color:var(--text);font:inherit;text-align:left;cursor:pointer;box-shadow:var(--shadow-soft);transition:transform .2s ease,border-color .2s ease,background .2s ease}
.studio-assignment-row:hover{transform:translateX(3px);border-color:color-mix(in srgb,var(--primary) 30%,var(--line));background:var(--surface-3)}
.studio-assignment-row>span:nth-child(2){min-width:0}.studio-assignment-row strong,.studio-assignment-row small{display:block;overflow-wrap:anywhere}.studio-assignment-row small{margin-top:5px;color:var(--text-soft);font-size:11px}.studio-assignment-row>svg{width:18px;color:var(--primary)}
.learning-cover-upload{position:relative;display:grid;place-items:center;align-content:center;gap:7px;width:100%;aspect-ratio:16/7;overflow:hidden;border:1px dashed color-mix(in srgb,var(--primary) 38%,var(--line));border-radius:8px;background:var(--surface-3);color:var(--primary);cursor:pointer}
.learning-cover-upload.compact{aspect-ratio:16/6}
.learning-cover-upload>svg{width:30px;height:30px}.learning-cover-upload>small{color:var(--text-soft);font-size:11px}.learning-cover-upload>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.learning-cover-upload>span{position:absolute;right:10px;bottom:10px;display:inline-flex;align-items:center;gap:7px;border-radius:7px;padding:8px 10px;background:rgba(24,24,35,.78);color:#fff;font-size:11px;font-weight:700;backdrop-filter:blur(8px)}.learning-cover-upload>span svg{width:15px;height:15px}
.school-class-cover-upload{margin-bottom:4px}
.school-class-brand-preview{width:52px;height:52px;overflow:hidden;border-radius:10px;background:var(--surface) url("brand-logo.png?v=1") no-repeat 6px center;background-size:auto 40px;box-shadow:var(--shadow-soft)}
.learning-exact-dates{margin:18px 0 0;border-top:1px solid var(--line);padding-top:14px}.learning-exact-dates summary{color:var(--primary);font-size:12px;font-weight:750;cursor:pointer}.learning-exact-dates .form-grid{margin-top:4px}
.modal-context{display:flex;align-items:center;gap:12px;border-radius:8px;padding:13px 15px;background:var(--surface-3)}.modal-context>svg{width:20px;color:var(--primary)}.modal-context span{min-width:0}.modal-context small,.modal-context strong{display:block}.modal-context small{color:var(--text-soft);font-size:10px}.modal-context strong{margin-top:3px;overflow-wrap:anywhere}
.attach-module-list{display:grid;gap:8px}.attach-module-list>button{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;border:1px solid var(--line);border-radius:8px;padding:14px;background:var(--surface);color:var(--text);font:inherit;text-align:left;cursor:pointer}.attach-module-list>button:hover{border-color:var(--primary);background:var(--primary-soft)}.attach-module-list strong,.attach-module-list small{display:block}.attach-module-list small{margin-top:4px;color:var(--text-soft);font-size:11px}.attach-module-list svg{width:18px;color:var(--primary)}
.attach-module-hint{display:flex;align-items:flex-start;gap:12px;margin-bottom:14px;border-left:3px solid var(--primary);padding:12px 14px;background:var(--primary-soft)}
.attach-module-hint>svg{width:20px;flex:0 0 20px;color:var(--primary)}.attach-module-hint strong,.attach-module-hint small{display:block}.attach-module-hint small{margin-top:3px;color:var(--text-soft);font-size:11px;line-height:1.5}

/* School blog and the persistent notification feed. */
.admin-blog-panel{padding-bottom:4px}.admin-blog-list{display:grid}.admin-blog-row{display:grid;grid-template-columns:116px minmax(0,1fr) auto;gap:18px;align-items:center;min-height:116px;padding:16px 0;border-top:1px solid var(--line)}.admin-blog-row:first-child{border-top:0}.admin-blog-cover{width:116px;height:84px;overflow:hidden;border-radius:8px;background:var(--cyan-soft)}.admin-blog-cover img{width:100%;height:100%;object-fit:cover}.admin-blog-cover.placeholder{display:grid;place-items:center;color:var(--cyan)}.admin-blog-cover.placeholder svg{width:28px;height:28px}.admin-blog-copy{min-width:0}.admin-blog-copy .blog-card-meta{margin-bottom:5px}.admin-blog-copy h3{margin:0 0 5px;font-size:16px}.admin-blog-copy p{display:-webkit-box;overflow:hidden;margin:0;color:var(--text-soft);font-size:12px;line-height:1.55;-webkit-line-clamp:2;-webkit-box-orient:vertical}.admin-blog-copy>small{display:flex;align-items:center;gap:6px;margin-top:9px;color:var(--text-soft);font-size:10px}.admin-blog-copy>small svg{width:14px;height:14px;color:var(--primary)}.admin-blog-actions{display:flex;gap:5px}.blog-pin{align-self:end;min-height:45px}.blog-pin span strong,.blog-pin span small{display:block}.blog-pin span small{margin-top:2px;color:var(--text-soft);font-size:10px}
.notification-feed-panel{margin-bottom:20px}.notification-feed{display:grid}.notification-feed-row{display:grid;grid-template-columns:42px minmax(0,1fr) 18px;gap:13px;align-items:center;width:100%;min-height:78px;border:0;border-top:1px solid var(--line);padding:12px 2px;background:transparent;color:var(--text);font:inherit;text-align:left;cursor:pointer;transition:background .18s ease}.notification-feed-row:first-child{border-top:0}.notification-feed-row:hover{background:var(--surface-3)}.notification-feed-row.unread{background:color-mix(in srgb,var(--primary-soft) 55%,transparent)}.notification-feed-row.unread strong::after{content:"";display:inline-block;width:7px;height:7px;margin-left:8px;border-radius:50%;background:var(--primary);vertical-align:middle}.notification-feed-icon{display:grid;place-items:center;width:38px;height:38px;border-radius:8px;background:var(--primary-soft);color:var(--primary)}.notification-feed-icon svg{width:18px;height:18px}.notification-feed-row>span:nth-child(2){min-width:0}.notification-feed-row small,.notification-feed-row strong{display:block}.notification-feed-row small{margin-bottom:3px;color:var(--text-soft);font-size:9px;text-transform:uppercase}.notification-feed-row strong{font-size:13px}.notification-feed-row p{overflow:hidden;margin:4px 0 0;color:var(--text-soft);font-size:11px;line-height:1.45;text-overflow:ellipsis;white-space:nowrap}.notification-feed-row>svg{width:17px;color:var(--text-soft)}

/* Keep dense administration tables readable instead of crushing their columns. */
.students-wrap{max-width:100%;overflow-x:auto;overscroll-behavior-x:contain;scrollbar-gutter:stable}
.students-table{width:100%;min-width:1180px;table-layout:fixed}
.students-table th:nth-child(1){width:230px}.students-table th:nth-child(2){width:210px}.students-table th:nth-child(3){width:125px}.students-table th:nth-child(4){width:245px}.students-table th:nth-child(5){width:145px}.students-table th:nth-child(6){width:225px}
.students-table .user-copy strong,.students-table .user-copy small{overflow-wrap:normal;word-break:normal}.students-table .student-actions .table-actions{flex-wrap:nowrap}.students-table .student-actions .btn{white-space:nowrap}

/* Student course stages and per-assignment expert discussions. */
.student-module{display:grid;grid-template-columns:230px minmax(0,1fr);min-height:220px;margin:18px 0;overflow:hidden;border:1px solid var(--line);border-radius:8px;background:var(--surface);box-shadow:var(--shadow-soft)}
.student-module-cover{position:relative;display:grid;place-items:center;overflow:hidden;background:var(--cyan-soft);color:var(--cyan)}.student-module-cover>img{width:100%;height:100%;object-fit:cover}.student-module-cover>svg{width:52px;height:52px}.student-module-cover>span{position:absolute;top:14px;left:0;padding:7px 13px;background:var(--primary);color:#fff;font-size:11px;font-weight:800}.student-module.completed .student-module-cover>span{background:var(--success)}.student-module.locked .student-module-cover{filter:saturate(.35)}.student-module.locked .student-module-cover>span{background:#808494}
.student-module-body{min-width:0;padding:20px 24px}.student-module-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.student-module-head h2{margin:5px 0 7px;font-size:19px}.student-module-head p{margin:0;color:var(--text-soft);font-size:12px;line-height:1.55}.student-module-head>strong{flex:0 0 auto;color:var(--primary);font-size:12px}.student-module-schedule{display:flex;gap:16px;margin:14px 0 5px;color:var(--text-soft);font-size:11px}.course-date-line{display:flex;gap:16px;flex-wrap:wrap;margin-top:16px}.course-date-line span{display:inline-flex;align-items:center;gap:7px;font-size:12px}.course-date-line svg{width:16px}.course-lesson-row.locked{opacity:.62;cursor:not-allowed}.course-lesson-row.locked:hover{transform:none;background:transparent}
.learning-assignment-help{display:flex;align-items:center;justify-content:space-between;gap:16px;width:min(820px,100%);margin:28px auto 0;border-top:1px solid var(--line);padding:18px 0 0}.learning-assignment-help>div{display:flex;align-items:center;gap:10px}.learning-assignment-help>div:first-child>svg{width:22px;color:var(--primary)}.learning-assignment-help strong,.learning-assignment-help small{display:block}.learning-assignment-help strong{font-size:12px}.learning-assignment-help small{margin-top:3px;color:var(--text-soft);font-size:10px}.learning-assignment-help .btn{white-space:nowrap}
.assignment-discussion-open{margin-top:8px!important}
.assignment-discussion-tabs{display:grid;grid-template-columns:1fr 1fr;gap:4px;padding:4px;border-radius:9px;background:var(--surface-2)}.assignment-discussion-tabs button{display:flex;align-items:center;justify-content:center;gap:8px;min-height:42px;border:0;border-radius:7px;background:transparent;color:var(--text-soft);font:inherit;font-size:12px;font-weight:750;cursor:pointer}.assignment-discussion-tabs button[aria-selected=true]{background:var(--surface);color:var(--primary);box-shadow:var(--shadow-soft)}.assignment-discussion-tabs button:disabled{opacity:.45;cursor:not-allowed}.assignment-discussion-tabs svg{width:17px}
.assignment-discussion-note{display:flex;align-items:center;gap:11px;margin:13px 0;border-radius:8px;padding:11px 13px;background:var(--cyan-soft);color:var(--cyan)}.assignment-discussion-note.spoiler{background:var(--primary-soft);color:var(--primary)}.assignment-discussion-note>svg{width:19px}.assignment-discussion-note strong,.assignment-discussion-note small{display:block}.assignment-discussion-note strong{font-size:11px}.assignment-discussion-note small{margin-top:2px;color:var(--text-soft);font-size:10px}
.assignment-discussion-messages{height:min(390px,46dvh);overflow-y:auto;overscroll-behavior:contain;border:1px solid var(--line);border-radius:8px;padding:14px;background:var(--bg)}.assignment-message{width:min(78%,520px);margin:0 auto 10px 0;border:1px solid var(--line);border-radius:8px;padding:10px 12px;background:var(--surface)}.assignment-message.own{margin-left:auto;margin-right:0;border-color:transparent;background:var(--primary);color:#fff}.assignment-message>div{display:flex;align-items:center;justify-content:space-between;gap:8px}.assignment-message strong,.assignment-message time{font-size:9px}.assignment-message time{opacity:.7}.assignment-message p{margin:5px 0 0;font-size:12px;line-height:1.55;overflow-wrap:anywhere}.assignment-discussion-composer{display:grid;grid-template-columns:minmax(0,1fr) 44px;gap:8px;margin-top:10px}.assignment-discussion-composer textarea{width:100%;min-height:48px;max-height:120px;resize:vertical;border:1px solid var(--line);border-radius:8px;padding:11px 13px;background:var(--surface);color:var(--text);font:inherit;font-size:12px}.assignment-discussion-composer .icon-btn{width:44px;height:44px;align-self:end;background:var(--primary);color:#fff}

@media(max-width:1100px){.studio-module-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.studio-course-module{grid-template-columns:170px minmax(0,1fr)}.studio-module-actions{grid-column:1/-1;min-width:0;flex-direction:row;align-items:center;border-top:1px solid var(--line)}.student-module{grid-template-columns:190px minmax(0,1fr)}}
@media(max-width:760px){.studio-library-head{align-items:flex-start!important}.studio-library-head .page-actions{width:100%}.studio-library-head .page-actions .btn{flex:1}.studio-library-tabs{display:flex;width:100%}.studio-library-tabs button{flex:1}.studio-module-grid{grid-template-columns:minmax(0,1fr)}.studio-course-overview,.studio-module-overview{grid-template-columns:repeat(2,minmax(0,1fr))}.studio-course-module{grid-template-columns:108px minmax(0,1fr)}.studio-course-module .studio-module-cover{min-height:150px}.studio-course-module-copy{padding:15px}.studio-module-actions{grid-column:1/-1}.student-module{grid-template-columns:minmax(0,1fr)}.student-module-cover{height:150px}.student-module-body{padding:17px}.learning-assignment-help{align-items:flex-start;flex-direction:column}.learning-assignment-help>div:last-child{width:100%;flex-wrap:wrap}.learning-assignment-help .btn{flex:1}.assignment-discussion-tabs{grid-template-columns:minmax(0,1fr)}.assignment-discussion-messages{height:42dvh}}
@media(max-width:480px){.studio-course-overview,.studio-module-overview{grid-template-columns:minmax(0,1fr)}.studio-course-module{grid-template-columns:minmax(0,1fr)}.studio-course-module .studio-module-cover{height:130px}.studio-module-actions{flex-wrap:wrap}.studio-module-actions>.btn{width:100%}.student-module-schedule{align-items:flex-start;flex-direction:column;gap:7px}.student-module-head{flex-direction:column}.learning-cover-upload{aspect-ratio:16/9}.learning-assignment-help .btn{flex-basis:100%}.assignment-message{width:92%}}

@media(max-width:760px){
  .admin-blog-row{grid-template-columns:88px minmax(0,1fr) auto;gap:12px}.admin-blog-cover{width:88px;height:72px}.admin-blog-actions{flex-direction:column}
  .students-wrap{overflow-x:auto!important;border:1px solid var(--line)!important;background:var(--surface)!important}
  .students-wrap .students-table{display:table!important;width:100%!important;min-width:1080px!important}
  .students-wrap .students-table thead{display:table-header-group!important}.students-wrap .students-table tbody{display:table-row-group!important}.students-wrap .students-table tr{display:table-row!important;width:auto!important;border:0!important;background:transparent!important}.students-wrap .students-table th,.students-wrap .students-table td{display:table-cell!important;width:auto!important;min-width:0!important;border-radius:0!important}.students-wrap .students-table td{padding:14px 16px!important;border-top:1px solid var(--line)!important}.students-wrap .students-table td::before{display:none!important}.students-wrap .students-table .student-identity,.students-wrap .students-table .student-actions{display:table-cell!important}
}
@media(max-width:480px){.admin-blog-row{grid-template-columns:70px minmax(0,1fr)}.admin-blog-cover{width:70px;height:62px}.admin-blog-actions{grid-column:2;flex-direction:row}.notification-feed-row{grid-template-columns:38px minmax(0,1fr)}.notification-feed-row>svg{display:none}.notification-feed-row p{white-space:normal}}

/* Try-based points (spec п.14.2): header/summary chips, per-question hint lines and retake row. */
.learn-points-chip{display:inline-flex;align-items:center;gap:6px;margin-top:6px;padding:5px 12px;border-radius:20px;background:var(--primary-soft);color:var(--primary);font-size:11px;font-weight:800;white-space:nowrap}
.learn-points-chip svg{width:13px;height:13px}
.learn-points-line{max-width:520px;margin:0 auto 16px;color:var(--text-soft);font-size:12px;text-align:center}
.learn-points-note{margin:8px 0 0;color:var(--text-soft);font-size:11px}
.learn-points-summary{display:flex;align-items:center;justify-content:center;gap:7px;margin:14px 0 0;color:var(--primary);font-weight:700}
.learn-points-summary svg{width:15px;height:15px}
.learn-result-points{display:inline-flex;align-items:center;justify-content:center;padding:2px 7px;margin-right:8px;border-radius:10px;background:var(--surface-2);color:var(--text-soft);font-size:10px;font-weight:800;white-space:nowrap;vertical-align:middle}
.learn-result-line.correct .learn-result-points{background:var(--success-soft);color:var(--success)}
.learn-result-line.partial .learn-result-points{background:var(--primary-soft);color:var(--primary)}
.course-lesson-item{display:flex;align-items:center;gap:8px}
.course-lesson-item .course-lesson-row{flex:1;min-width:0}

/* Шапка: быстрая заметка и чаты (задача «шапка кабинета»). */
.badge-btn{position:relative}
.header-badge{position:absolute;top:2px;right:0;min-width:18px;height:18px;padding:0 5px;border-radius:9px;display:inline-grid;place-items:center;background:var(--coral);color:#fff;font-size:10px;font-weight:800;border:2px solid var(--surface)}
html[data-role="admin"] #noteBtn, html[data-role="admin"] #chatBtn {display:none}
@media (max-width:480px){
  html[data-role="student"] #themeBtn{display:none}
}

/* Профиль: фото — кликабельный элемент с оверлеем вместо отдельной кнопки загрузки. */
.profile-photo-pick{position:relative;display:block;width:70px;height:70px;margin:0 auto 14px;border-radius:50%;cursor:pointer;overflow:hidden}
.profile-photo-pick .profile-photo{width:70px;height:70px;border-radius:50%;object-fit:cover;display:block}
.profile-photo-pick .avatar.large{margin:0}
.profile-photo-overlay{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;border-radius:50%;background:rgba(20,14,26,.55);color:#fff;opacity:0;transition:opacity .18s ease}
.profile-photo-overlay svg{width:18px;height:18px}
.profile-photo-overlay small{font-size:9px;font-weight:700}
.profile-photo-pick:hover .profile-photo-overlay,.profile-photo-pick:focus-within .profile-photo-overlay{opacity:1}
@media (hover:none){
  .profile-photo-overlay{opacity:1;background:rgba(20,14,26,.35)}
  .profile-photo-overlay small{display:none}
}
.course-lesson-retake{flex:0 0 auto;width:40px;height:40px;border:1px solid var(--line);border-radius:50%;background:var(--surface)}

/* Режим просмотра: нет полоски прогресса, поэтому у сетки своя раскладка; нижняя панель никогда не растягивается на высоту строки. */
.learn-player.learn-review{grid-template-rows:auto auto minmax(390px,1fr) auto}
.learn-player>.learn-footer{align-self:end}

/* Пагинация длинных списков (paginateItems/pagerHtml в app.js): те же пропорции, что у .material-pagination в school.css. */
.list-pager{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:12px;margin:20px 0;color:var(--text-soft);font-size:13px}
.list-pager-nums{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.list-pager-num{min-width:30px;height:30px;padding:0 6px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--text-soft);font-size:12px;font-weight:700;cursor:pointer}
.list-pager-num:hover{border-color:var(--primary);color:var(--primary)}
.list-pager-num.active{background:var(--primary);border-color:var(--primary);color:#fff;cursor:default}

/* Логотип в шапке кабинета: та же анимация, что на сайте (покачивание и блик при наведении), клик ведёт на дашборд. */
.l2g-logo-wrap{position:relative;display:inline-block;overflow:hidden;vertical-align:middle;padding:14px 16px;margin:-14px -16px;border-radius:14px;cursor:pointer}
.l2g-logo-wrap img{display:block;transition:transform .3s ease;transform-origin:50% 50%;will-change:transform}
.l2g-logo-wrap:hover img{animation:l2g-logo-wiggle .8s cubic-bezier(.34,1.56,.64,1) forwards}
@keyframes l2g-logo-wiggle{0%{transform:rotate(0) scale(1) translateY(0)}20%{transform:rotate(-5deg) scale(1.06) translateY(-2px)}45%{transform:rotate(5deg) scale(1.06) translateY(-2px)}70%{transform:rotate(-2deg) scale(1.03) translateY(-1px)}100%{transform:rotate(0) scale(1) translateY(0)}}
.l2g-logo-wrap::after{content:"";position:absolute;inset:0;background:linear-gradient(115deg,transparent 40%,rgba(255,255,255,.55) 50%,transparent 60%);transform:translateX(-100%);pointer-events:none;transition:transform .7s ease}
.l2g-logo-wrap:hover::after{transform:translateX(100%)}
@media (prefers-reduced-motion:reduce){.l2g-logo-wrap:hover img{animation:none}.l2g-logo-wrap::after{display:none}}

/* Доска результатов урока: итог, фильтры и все шаги с действиями (learning-player.js, resultsHTML). */
.learn-results{width:min(860px,100%);margin:0 auto;padding:28px 30px 26px;border:1px solid var(--line);border-radius:22px;background:var(--surface);box-shadow:var(--shadow-soft);text-align:left}
.learn-results-head{display:flex;align-items:center;gap:18px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.learn-results-head>div{min-width:0;flex:1}
.learn-results-icon{display:grid;flex:0 0 58px;width:58px;height:58px;place-items:center;border-radius:16px;background:var(--success-soft);color:var(--success)}
.learn-results-icon svg{width:28px;height:28px}
.learn-results[data-tone="pending"] .learn-results-icon{background:var(--amber-soft);color:var(--amber)}
.learn-results[data-tone="todo"] .learn-results-icon{background:var(--primary-soft);color:var(--primary)}
.learn-results-head h2{margin:0;font-size:24px;line-height:1.25;font-weight:800;overflow-wrap:anywhere}
.learn-results-head p{margin:6px 0 0;color:var(--text-soft);font-size:13px;line-height:1.5}
.learn-results-stats{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;margin-top:10px;color:var(--text-soft);font-size:12px;font-weight:700}
.learn-results-stats .learn-points-chip{margin-top:0}
.learn-results-chips{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 4px}
.learn-results-chip{display:inline-flex;align-items:center;gap:8px;min-height:34px;padding:5px 8px 5px 14px;border:1px solid var(--line);border-radius:999px;background:var(--surface);color:var(--text-soft);font:inherit;font-size:12px;font-weight:700;cursor:pointer;transition:background-color .2s ease,border-color .2s ease,color .2s ease}
.learn-results-chip b{min-width:22px;padding:2px 7px;border-radius:999px;background:var(--surface-2);color:var(--text-soft);font-size:11px;font-weight:800;text-align:center}
.learn-results-chip:hover{border-color:var(--primary);color:var(--primary)}
.learn-results-chip.active{border-color:var(--primary);background:var(--primary-soft);color:var(--primary)}
.learn-results-chip.active b{background:var(--surface);color:var(--primary)}
.learn-results-group{margin-top:22px}
.learn-results-group>h3{margin:0 0 4px;padding:0 6px;color:var(--cyan);font-size:11px;font-weight:800;line-height:1.4;text-transform:uppercase;overflow-wrap:anywhere}
.learn-results-rows{display:grid}
.learn-results-row{display:grid;grid-template-columns:34px minmax(0,1fr) auto auto;align-items:center;gap:6px 12px;padding:11px 6px;border-bottom:1px solid var(--line)}
.learn-results-row[data-open-row]{cursor:pointer}
.learn-results-row[data-open-row]:hover{background:var(--surface-3)}
.learn-results-row[hidden],.learn-results-group[hidden],.learn-results-empty[hidden]{display:none}
.learn-results-status,.learn-review-aside-status{display:grid;flex:0 0 auto;width:30px;height:30px;place-items:center;border-radius:50%;background:var(--surface-2);color:var(--text-soft)}
.learn-results-status svg,.learn-review-aside-status svg{width:18px;height:18px}
.learn-results-row[data-status="correct"] .learn-results-status,.learn-results-row[data-status="done"] .learn-results-status,.learn-review-aside-row[data-status="correct"] .learn-review-aside-status{background:var(--success-soft);color:var(--success)}
.learn-results-row[data-status="incorrect"] .learn-results-status,.learn-review-aside-row[data-status="incorrect"] .learn-review-aside-status{background:var(--coral-soft);color:var(--coral)}
.learn-results-row[data-status="pending"] .learn-results-status,.learn-review-aside-row[data-status="pending"] .learn-review-aside-status{background:var(--amber-soft);color:var(--amber)}
.learn-results-copy{min-width:0}
.learn-results-copy strong,.learn-results-copy small{display:block;overflow-wrap:anywhere}
.learn-results-copy strong{font-size:14px;line-height:1.4}
.learn-results-copy small{margin-top:3px;color:var(--text-soft);font-size:12px;line-height:1.45}
.learn-results-points{min-width:44px;padding:3px 9px;border-radius:999px;background:var(--surface-2);color:var(--text-soft);font-size:11px;font-weight:800;text-align:center;white-space:nowrap}
.learn-results-row[data-status="correct"] .learn-results-points{background:var(--success-soft);color:var(--success)}
.learn-results-actions{grid-column:4;display:flex;flex-wrap:wrap;justify-content:flex-end;gap:6px}
.learn-results-actions .btn{min-height:32px;padding:5px 11px;font-size:12px;white-space:nowrap}
.learn-results-actions .btn svg{width:15px;height:15px}
.learn-results-empty{margin:18px 0 0;padding:22px 16px;border:1px dashed var(--line);border-radius:12px;color:var(--text-soft);text-align:center}
.learn-results-foot{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:10px;margin-top:24px;padding-top:20px;border-top:1px solid var(--line)}
.learn-results-foot .btn.primary{min-width:180px}
@media (max-width:640px){
  .learn-results{padding:20px 16px;border-radius:16px}
  .learn-results-head{align-items:flex-start;gap:13px}
  .learn-results-icon{flex-basis:46px;width:46px;height:46px;border-radius:13px}
  .learn-results-icon svg{width:24px;height:24px}
  .learn-results-head h2{font-size:19px}
  .learn-results-row{grid-template-columns:30px minmax(0,1fr) auto;gap:8px 10px}
  .learn-results-actions{grid-column:2/-1;justify-content:flex-start}
  .learn-results-foot .btn{flex:1 1 100%}
}

/* Режим просмотра: список всех заданий слева (от 900px), на телефоне тот же список открывается кнопкой «Содержание» в шапке. */
.learn-review-body{display:flex;flex-direction:column;justify-content:center;min-width:0}
.learn-review-aside{display:none}
.learn-review-aside-list{position:relative;display:grid;gap:2px;overflow:auto}
.learn-review-aside-list.in-modal{max-height:65vh}
.learn-review-aside-row{display:grid;grid-template-columns:30px minmax(0,1fr);align-items:center;gap:10px;width:100%;padding:9px 10px;border:1px solid transparent;border-radius:10px;background:transparent;color:var(--text);font:inherit;text-align:left;cursor:pointer}
.learn-review-aside-row:hover{background:var(--surface-3)}
.learn-review-aside-row.active{border-color:color-mix(in srgb,var(--primary) 34%,var(--line));background:var(--primary-soft)}
.learn-review-aside-copy{min-width:0}
.learn-review-aside-copy small,.learn-review-aside-copy strong{display:block;overflow-wrap:anywhere}

/* Drag-and-drop exercises: clear targets, visible media and tap controls that also work on touch screens. */
.learn-match-board,.learn-category-board{display:grid;gap:22px;min-width:0}
.learn-match-board .learn-pairs{gap:10px}
.learn-match-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:12px;align-items:stretch;min-width:0}
.learn-match-label,.learn-match-target{display:flex;align-items:center;gap:12px;min-width:0;min-height:62px;padding:10px 14px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--text)}
.learn-match-label{font-weight:650;overflow-wrap:anywhere}
.learn-match-label img,.learn-match-assigned img,.learn-match-chip img,.learn-category-zone>header img,.learn-category-chip img{flex:none;width:54px;height:42px;border-radius:8px;object-fit:cover;background:var(--surface-2)}
.learn-match-target{position:relative;justify-content:space-between;border-style:dashed;background:var(--surface-2);cursor:pointer;transition:border-color .16s,background .16s,box-shadow .16s}
.learn-match-target:hover,.learn-match-target.is-selected-target{border-color:var(--primary);background:var(--primary-soft);box-shadow:0 0 0 3px color-mix(in srgb,var(--primary) 10%,transparent)}
.learn-match-target.filled{border-style:solid;background:var(--surface)}
.learn-match-assigned{display:flex;align-items:center;gap:10px;min-width:0;flex:1;overflow-wrap:anywhere;cursor:grab}
.learn-match-target>button{display:grid;place-items:center;flex:none;width:32px;height:32px;border:0;border-radius:8px;background:transparent;color:var(--text-soft);cursor:pointer}
.learn-match-target>button:hover{background:var(--surface-2);color:var(--danger)}
.learn-match-placeholder,.learn-category-empty{color:var(--text-soft);font-size:.92em}
.learn-match-bank,.learn-category-bank{display:grid;gap:10px;padding:15px;border:1px solid var(--line);border-radius:14px;background:var(--surface-2)}
.learn-match-bank>strong,.learn-category-bank>strong{font-size:.92rem}
.learn-match-bank>div,.learn-category-bank>div{display:flex;flex-wrap:wrap;gap:9px;min-width:0}
.learn-match-chip,.learn-category-chip{display:inline-flex;align-items:center;gap:10px;min-height:48px;max-width:100%;padding:7px 12px;border:1px solid var(--line);border-radius:11px;background:var(--surface);color:var(--text);font:inherit;text-align:left;overflow-wrap:anywhere;box-shadow:0 2px 7px rgba(22,37,66,.06);cursor:grab;transition:transform .16s,border-color .16s,box-shadow .16s}
.learn-match-chip:hover,.learn-category-chip:hover{transform:translateY(-1px);border-color:color-mix(in srgb,var(--primary) 45%,var(--line));box-shadow:0 5px 13px rgba(22,37,66,.1)}
.learn-match-chip.is-selected,.learn-category-chip.is-selected{border-color:var(--primary);background:var(--primary-soft);box-shadow:0 0 0 3px color-mix(in srgb,var(--primary) 12%,transparent)}
.learn-category-groups{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr));gap:14px}
.learn-category-zone{display:grid;align-content:start;gap:14px;min-width:0;min-height:170px;padding:15px;border:1px dashed color-mix(in srgb,var(--primary) 38%,var(--line));border-radius:14px;background:var(--surface-2);transition:border-color .16s,background .16s,box-shadow .16s}
.learn-category-zone.is-selected-target,.learn-category-zone:hover{border-color:var(--primary);background:var(--primary-soft);box-shadow:0 0 0 3px color-mix(in srgb,var(--primary) 9%,transparent)}
.learn-category-zone>header{display:flex;align-items:center;gap:10px;min-width:0}
.learn-category-zone>header strong{min-width:0;overflow-wrap:anywhere}
.learn-category-zone>header span{margin-left:auto;color:var(--text-soft);font-size:.78rem;text-align:right}
.learn-category-items{display:flex;flex-wrap:wrap;align-content:start;gap:8px;min-height:46px;padding:8px;border-radius:10px;background:color-mix(in srgb,var(--surface) 74%,transparent)}
.learn-category-chip.assigned{max-width:100%;min-height:42px;padding:5px 9px}
.learn-category-chip.assigned>span{min-width:0}
.learn-category-chip.assigned>i{flex:none;width:14px;height:14px;color:var(--text-soft)}
.learn-order-answer{display:grid;justify-content:stretch;gap:8px;padding:12px;border:1px dashed color-mix(in srgb,var(--primary) 42%,var(--line));border-radius:14px;background:var(--surface-2)}
.learn-order-item{display:grid;grid-template-columns:28px minmax(0,1fr) auto;align-items:center;gap:8px;min-width:0;padding:6px 8px;border:1px solid var(--line);border-radius:11px;background:var(--surface);cursor:grab}
.learn-order-item:active{cursor:grabbing}
.learn-order-number{display:grid;place-items:center;width:25px;height:25px;border-radius:50%;background:var(--primary-soft);color:var(--primary);font-size:.8rem;font-weight:700}
.learn-order-item>.learn-token{justify-content:flex-start;min-width:0;width:100%;padding:7px 9px;border:0;box-shadow:none;white-space:normal;overflow-wrap:anywhere}
.learn-order-move{display:flex;gap:3px}
.learn-order-move button{display:grid;place-items:center;width:31px;height:31px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--text-soft);cursor:pointer}
.learn-order-move button:disabled{opacity:.35;cursor:default}
.learn-order-empty{padding:10px;color:var(--text-soft);text-align:center}
.learn-token{border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--text);box-shadow:0 2px 7px rgba(22,37,66,.06)}
.learn-token:hover{border-color:color-mix(in srgb,var(--primary) 45%,var(--line));background:var(--primary-soft);box-shadow:0 5px 13px rgba(22,37,66,.1);transform:translateY(-1px)}
.exercise-category-media{display:grid;gap:10px;padding:14px;border:1px solid var(--line);border-radius:12px;background:var(--surface-2)}
.exercise-category-media>strong{font-size:.92rem}
.exercise-category-media .exercise-pair-config{grid-template-columns:minmax(0,.7fr) minmax(0,1.3fr);align-items:center}
.quiz-exercise{min-width:0;margin-top:12px}
.preview-result{border-color:color-mix(in srgb,var(--primary) 26%,var(--line))}
@media(max-width:640px){
  .learn-match-row{grid-template-columns:minmax(0,1fr);gap:7px;padding:9px 0;border-bottom:1px solid var(--line)}
  .learn-match-label,.learn-match-target{min-height:54px;padding:8px 10px}
  .learn-match-label img,.learn-match-assigned img,.learn-match-chip img,.learn-category-zone>header img,.learn-category-chip img{width:48px;height:38px}
  .learn-category-groups{grid-template-columns:minmax(0,1fr)}
  .learn-category-zone{min-height:132px;padding:12px}
  .learn-category-zone>header span{max-width:98px}
  .learn-match-bank,.learn-category-bank{padding:12px}
  .learn-match-chip,.learn-category-chip{min-height:44px;padding:6px 9px}
  .learn-order-answer{padding:8px}
  .learn-order-item{grid-template-columns:25px minmax(0,1fr) auto;gap:5px;padding:5px}
  .learn-order-move button{width:34px;height:34px}
}
.learn-review-aside-copy small{color:var(--text-soft);font-size:10px;font-weight:700}
.learn-review-aside-copy strong{margin-top:2px;font-size:12px;font-weight:600;line-height:1.35}
.learn-review-retake{background:var(--surface-2);border-color:transparent;color:var(--text-soft)}
@media (min-width:900px){
  .learn-review-body{display:grid;grid-template-columns:280px minmax(0,1fr);justify-content:normal;gap:32px;align-items:start}
  .learn-review-aside{display:flex;flex-direction:column;position:sticky;top:88px;align-self:start;max-height:calc(100dvh - 210px);margin-top:26px;overflow:hidden;border:1px solid var(--line);border-radius:16px;background:var(--surface)}
  .learn-review-aside-head{padding:14px 16px 10px;border-bottom:1px solid var(--line);color:var(--text-soft);font-size:11px;font-weight:800;text-transform:uppercase}
  .learn-review-aside .learn-review-aside-list{flex:1 1 auto;min-height:0;padding:6px}
  .learn-heading>.learn-review-aside-toggle{display:none}
}
@media (min-width:900px) and (max-width:1199px){
  .learn-review-body .learn-question-scene{padding-right:0;padding-left:0}
}
@media (min-width:761px){
  .learn-player.learn-review>.learn-footer{grid-template-columns:auto minmax(0,1fr) auto}
}
@media (max-width:600px){
  .learn-review-retake{min-width:0;padding:9px 12px}
  .learn-review-retake span{display:none}
}