:root{
  --navy:#1F3864; --blue:#2E75B6; --grey:#595959;
  --ink:#22272E; --muted:#6B7280; --rule:#DCE3ED;
  --paper:#FFFFFF; --tint:#F5F7FB; --shell:#F0F3F8;
  --def:#1F3864; --def-bg:#EEF2F9;
  --ex:#2F6F5E;  --ex-bg:#EDF5F2;
  --warn:#9A5B12; --warn-bg:#FBF2E5;
  --task:#2E75B6; --task-bg:#EAF2FA;
  --info:#595959; --info-bg:#F2F3F5;
  --serif:Georgia,"Iowan Old Style","Times New Roman",serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--shell); color:var(--ink);
  font-family:var(--sans); font-size:15px; line-height:1.5;
}
a{color:var(--blue); text-decoration:none}
a:hover{text-decoration:underline}
.topbar{
  background:var(--navy); color:#fff; padding:12px 20px;
  display:flex; align-items:center; gap:20px; flex-wrap:wrap;
}
.topbar .brand{font-weight:700; letter-spacing:.02em; color:#fff; text-decoration:none}
.topbar nav{display:flex; gap:14px; flex-wrap:wrap; flex:1}
.topbar nav a{color:#c5d4ea; font-size:13.5px; text-decoration:none}
.topbar nav a.on, .topbar nav a:hover{color:#fff}
.nav-badge{
  display:inline-block; margin-left:6px; min-width:1.25em; padding:0 5px;
  border-radius:9px; background:#e8c36a; color:var(--navy);
  font-size:11px; font-weight:700; line-height:1.4; vertical-align:middle;
  text-decoration:none;
}
.filter-row{margin:14px 0; font-size:14px; color:var(--muted)}
.filter-row a{margin-right:10px}
.filter-row a.on{color:var(--navy); font-weight:600}
.card-dl{display:grid; grid-template-columns:180px 1fr; gap:6px 16px; margin:0}
.card-dl dt{color:var(--muted); font-size:13px}
.card-dl dd{margin:0}
.topbar .user{font-size:12.5px; color:#9eb4d4}
.stub-banner{
  background:#FBF2E5; color:var(--warn); font-size:13px;
  padding:8px 20px; border-bottom:1px solid #edd9b0;
}
.page{max-width:1180px; margin:0 auto; padding:24px 20px 80px}

/* dashboard */
.hero-card{
  background:var(--paper); border:1px solid var(--rule);
  border-top:3px solid var(--navy); padding:28px 28px 22px; margin-bottom:28px;
}
.hero-card .eyebrow{font-size:11.5px; letter-spacing:.14em; text-transform:uppercase; color:var(--blue); font-weight:600; margin:0 0 8px}
.hero-card h1{font-size:26px; color:var(--navy); margin:0 0 10px; line-height:1.25; max-width:28ch}
.hero-card p{margin:0; color:var(--grey); max-width:62ch}
.note{font-size:13px; color:var(--muted); margin-top:14px}
.grid-2{display:grid; grid-template-columns:1.2fr .8fr; gap:20px}
@media(max-width:800px){.grid-2{grid-template-columns:1fr}}
.panel{
  background:var(--paper); border:1px solid var(--rule); padding:20px 22px;
}
.panel h2{font-size:12px; letter-spacing:.12em; text-transform:uppercase; color:var(--blue); margin:0 0 14px}
.next-link{
  display:block; padding:14px 16px; background:var(--tint);
  border-left:3px solid var(--blue); color:var(--navy); font-weight:600;
}
.next-link small{display:block; font-weight:400; color:var(--muted); margin-top:4px}
.section-pills{display:flex; flex-wrap:wrap; gap:8px}
.pill{
  font-size:12.5px; padding:6px 10px; border:1px solid var(--rule);
  background:var(--tint); color:var(--grey); border-radius:2px;
}
.pill b{color:var(--navy)}

/* program accordion */
.acc{background:var(--paper); border:1px solid var(--rule); margin:0 0 10px}
.acc summary{
  list-style:none; cursor:pointer; padding:16px 18px;
  display:flex; gap:16px; align-items:baseline; flex-wrap:wrap;
}
.acc summary::-webkit-details-marker{display:none}
.acc summary .num{
  font-weight:700; color:var(--blue); min-width:2ch;
}
.acc summary .title{flex:1; font-weight:600; color:var(--navy)}
.acc summary .meta{font-size:12.5px; color:var(--muted)}
.acc[open] summary{border-bottom:1px solid var(--rule); background:var(--tint)}
.acc-body{padding:8px 18px 16px}
.acc-body a{
  display:block; padding:8px 0; border-top:1px solid var(--rule);
  color:var(--ink); font-size:14.5px;
}
.acc-body a:first-child{border-top:none}
.acc-body .kind{font-size:11.5px; color:var(--muted); text-transform:uppercase; letter-spacing:.06em; margin-right:8px}
.program-links{display:flex; gap:16px; flex-wrap:wrap; margin:0 0 22px}
.program-links a{font-size:14px}

/* reader layout */
.reader-page{background:var(--paper); max-width:none; padding:0 0 64px}
.reader-wrap{max-width:1320px; margin:0 auto; padding:0 20px}
.masthead{border-bottom:2px solid var(--navy); padding:26px 0 18px; margin-bottom:28px}
.masthead .eyebrow{font-size:11.5px; font-weight:600; letter-spacing:.14em; text-transform:uppercase; color:var(--blue); margin:0 0 12px}
.masthead .lec-no{font-size:12px; font-weight:700; letter-spacing:.1em; color:var(--grey); text-transform:uppercase; margin:0 0 6px}
.masthead h1{
  font-size:30px; line-height:1.22; font-weight:700; letter-spacing:-.015em;
  color:var(--navy); margin:0 0 14px; max-width:22ch; font-family:var(--sans);
}
.chips{display:flex; flex-wrap:wrap; gap:8px}
.chip{
  font-size:12.5px; color:var(--grey); border:1px solid var(--rule);
  border-radius:2px; padding:4px 10px; background:var(--tint);
}
.chip b{color:var(--navy); font-weight:600}
.meta-line{
  font-size:13px; color:var(--muted); margin:0 0 8px; cursor:pointer;
}
.meta-line summary{list-style:none}
.reader-cols{
  display:grid; grid-template-columns:200px minmax(0,1fr) 240px;
  gap:36px; align-items:start;
}
.side, .materials{
  position:sticky; top:16px; font-size:13px;
}
.side h2, .materials h2{
  font-size:11.5px; letter-spacing:.12em; text-transform:uppercase;
  color:var(--muted); font-weight:600; margin:0 0 12px;
}
.side ol{list-style:none; margin:0; padding:0; border-left:1px solid var(--rule)}
.side a{
  display:block; padding:6px 0 6px 12px; font-size:13px; line-height:1.35;
  color:var(--grey); text-decoration:none; border-left:2px solid transparent; margin-left:-1px;
}
.side a:hover{color:var(--navy)}
.side .lvl2{padding-left:22px; font-size:12px; color:var(--muted)}
.side a.on{color:var(--navy); font-weight:600; border-left-color:var(--blue)}
article.lecture-body{
  max-width:70ch; font-family:var(--serif); font-size:18px; line-height:1.66;
}
.brief{
  border:1px solid var(--rule); border-top:3px solid var(--navy);
  padding:20px 22px 6px; margin:0 0 36px; background:var(--tint);
  font-family:var(--serif); font-size:17px;
}
.brief h2{
  font-family:var(--sans); font-size:11.5px; letter-spacing:.12em;
  text-transform:uppercase; color:var(--blue); font-weight:600; margin:0 0 8px;
}
.brief p{margin:0 0 16px}
.brief ul{margin:0 0 16px; padding-left:20px}
.plan{list-style:none; margin:0 0 16px; padding:0}
.plan li{display:flex; gap:12px; align-items:baseline; padding:5px 0; border-top:1px solid var(--rule)}
.plan li:first-child{border-top:none}
.plan .mins{font-family:var(--sans); font-size:12px; font-weight:600; color:var(--blue); white-space:nowrap; min-width:52px; text-align:right}

/* body content from DB */
article.lecture-body h2.sec{
  font-family:var(--sans); font-size:24px; font-weight:700; line-height:1.25;
  color:var(--navy); margin:48px 0 16px; position:relative;
}
article.lecture-body h2.sec .sec__num{
  position:absolute; left:-72px; top:-12px; font-size:48px; font-weight:800;
  color:transparent; -webkit-text-stroke:1.5px var(--rule); letter-spacing:-.04em;
}
article.lecture-body h3{font-family:var(--sans); font-size:18px; font-weight:700; color:var(--navy); margin:28px 0 10px}
article.lecture-body p{margin:0 0 16px}
article.lecture-body ul, article.lecture-body ol{margin:0 0 16px; padding-left:22px}
.callout{margin:22px 0; padding:14px 18px; border-left:3px solid; border-radius:0 2px 2px 0}
.callout p{margin:0 0 8px; font-size:16.5px}
.callout p:last-child{margin-bottom:0}
.callout__title{
  font-family:var(--sans); font-size:11.5px; font-weight:700; letter-spacing:.1em;
  text-transform:uppercase; margin:0 0 8px !important;
}
.callout--def{border-color:var(--def); background:var(--def-bg)}
.callout--def .callout__title{color:var(--def)}
.callout--example{border-color:var(--ex); background:var(--ex-bg)}
.callout--example .callout__title{color:var(--ex)}
.callout--warn{border-color:var(--warn); background:var(--warn-bg)}
.callout--warn .callout__title{color:var(--warn)}
.callout--task{border-color:var(--task); background:var(--task-bg)}
.callout--task .callout__title{color:var(--task)}
.callout--info{border-color:var(--info); background:var(--info-bg)}
.callout--info .callout__title{color:var(--info)}
article.lecture-body table{
  width:100%; border-collapse:collapse; margin:22px 0;
  font-size:14.5px; font-family:var(--sans); display:block; overflow-x:auto;
}
article.lecture-body th{
  text-align:left; background:var(--navy); color:#fff; font-weight:600;
  font-size:12px; letter-spacing:.04em; text-transform:none; padding:8px 10px;
}
article.lecture-body td{padding:8px 10px; border-bottom:1px solid var(--rule); vertical-align:top}
article.lecture-body tbody tr:nth-child(even){background:var(--tint)}
:target, .hl-flash{
  animation: flash 1.6s ease;
  outline:2px solid var(--blue); outline-offset:4px;
}
@keyframes flash{
  0%{background:rgba(46,117,182,.18)}
  100%{background:transparent}
}

.materials .block{margin:0 0 16px; padding-bottom:14px; border-bottom:1px solid var(--rule)}
.materials .block:last-child{border-bottom:none}
.materials a.btn{
  display:inline-block; margin:4px 0; padding:7px 12px;
  border:1px solid var(--rule); background:var(--tint); color:var(--navy);
  font-size:13px; text-decoration:none;
}
.materials a.btn:hover{border-color:var(--blue)}
.materials .empty{color:var(--muted); font-size:13px}
.pdf-frame{
  width:100%; height:220px; border:1px solid var(--rule); background:var(--tint);
}
.tail{margin-top:56px; padding-top:28px; border-top:2px solid var(--navy); max-width:70ch}
.tail h2{
  font-family:var(--sans); font-size:12px; letter-spacing:.12em; text-transform:uppercase;
  color:var(--blue); font-weight:600; margin:0 0 14px;
}
.qs{list-style:none; counter-reset:q; margin:0 0 40px; padding:0; font-family:var(--serif); font-size:17px}
.qs li{counter-increment:q; position:relative; padding:12px 0 12px 40px; border-top:1px solid var(--rule)}
.qs li::before{
  content:counter(q); position:absolute; left:0; top:12px; font-family:var(--sans);
  font-size:13px; font-weight:700; color:var(--blue);
  border:1px solid var(--rule); width:26px; height:26px; line-height:24px; text-align:center;
}
.terms{font-family:var(--serif)}
.terms dt{font-family:var(--sans); font-weight:700; color:var(--navy); margin:14px 0 4px}
.terms dd{margin:0 0 8px; color:var(--ink)}

/* glossary */
.search{display:flex; gap:8px; margin:0 0 22px}
.search input{
  flex:1; padding:10px 12px; border:1px solid var(--rule); font-size:15px;
}
.search button{
  padding:10px 16px; background:var(--navy); color:#fff; border:0; cursor:pointer;
}
.g-item{background:var(--paper); border:1px solid var(--rule); padding:16px 18px; margin:0 0 10px}
.g-item h3{margin:0 0 8px; color:var(--navy); font-size:17px}
.g-item .conflict{font-size:12px; color:var(--warn); font-weight:600; margin:0 0 8px}
.edition{padding:10px 12px; background:var(--tint); margin:0 0 8px; border-left:3px solid var(--blue)}
.edition .src{font-size:12px; color:var(--muted); margin:0 0 4px}
.empty-state{
  background:var(--paper); border:1px dashed var(--rule); padding:28px;
  color:var(--muted); max-width:56ch;
}
.lit-group{margin:0 0 28px}
.lit-group h2{color:var(--navy); font-size:18px; margin:0 0 12px}
.lit-item{background:var(--paper); border:1px solid var(--rule); padding:14px 16px; margin:0 0 10px}
.lit-des{margin:0 0 4px; color:var(--navy); font-weight:600}
.lit-title{margin:0 0 6px; font-size:14px}
.lit-meta{margin:0; font-size:12.5px; color:var(--muted)}
.lit-lecs{margin:8px 0 0; font-size:13px}
.lec-readings{margin:0 0 16px; padding-left:20px; line-height:1.6}
.badge-auto{font-size:11px; background:var(--tint); color:var(--navy); padding:2px 6px}
.badge-inc{font-size:11px; color:var(--warn); margin-left:6px}

.table-scroll{overflow-x:auto; -webkit-overflow-scrolling:touch; max-width:100%}
article.lecture-body table{display:block; max-width:100%; overflow-x:auto}
article.lecture-body img, article.lecture-body pre{
  max-width:100%; overflow-x:auto
}
.materials .pdf-frame{max-width:100%}
.chips{flex-wrap:wrap}

@media (max-width:1100px){
  .reader-cols{grid-template-columns:minmax(0,1fr) 200px; gap:24px}
  .side{display:none}
}
@media (max-width:800px){
  .reader-cols{grid-template-columns:1fr}
  .materials{position:static; order:-1; margin-bottom:20px}
  article.lecture-body{font-size:17px; max-width:none; overflow-wrap:anywhere; word-break:break-word}
  article.lecture-body h2.sec .sec__num{position:static; display:block; font-size:36px; margin-bottom:-4px}
  .masthead h1{font-size:24px; max-width:none}
  .page, .reader-page{padding:16px 14px 64px}
  .reader-wrap{padding-left:14px; padding-right:14px}
  .chips .chip{font-size:12px}
}
@media (prefers-reduced-motion:reduce){*{animation:none !important; transition:none !important}}

/* auth */
.auth-body{
  min-height:100vh; display:flex; flex-direction:column;
  align-items:center; justify-content:center;
  background:linear-gradient(160deg,#eef3f8,#f7f5f0 55%,#e8eef5);
  padding:24px 14px;
}
.auth-card{
  width:100%; max-width:420px; background:var(--paper); border:1px solid var(--rule);
  padding:28px 26px 32px; box-shadow:0 12px 40px rgba(27,54,93,.08);
  flex-shrink:0;
}
.auth-card h1{margin:0 0 16px; color:var(--navy); font-size:22px}
.auth-form{display:flex; flex-direction:column; gap:12px}
.auth-form label{display:flex; flex-direction:column; gap:4px; font-size:13px; color:var(--muted)}
.auth-form input, .auth-form select, .auth-form textarea,
.search select{
  padding:10px 12px; border:1px solid var(--rule); font-size:15px; background:#fff;
}
.pw-field{display:flex; gap:8px; align-items:stretch}
.pw-field input{flex:1; min-width:0}
.auth-form button[type="submit"], .inline-form button, .search button{
  padding:10px 16px; background:var(--navy); color:#fff; border:0; cursor:pointer; font-size:15px;
}
.pw-field .pw-toggle{
  background:#fff; color:var(--navy); border:1px solid var(--rule);
  padding:0 12px; cursor:pointer; font-size:13px; white-space:nowrap;
  flex-shrink:0;
}
.pw-field .pw-toggle[aria-pressed="true"]{background:var(--tint)}
.btn-muted{background:#6b7c93 !important}
.btn{
  display:inline-block; padding:7px 12px; border:0;
  background:var(--navy); color:#fff; font-size:13px; cursor:pointer;
  text-decoration:none;
}
a.btn:hover{text-decoration:none; color:#fff; filter:brightness(1.08)}
.staff-bar{
  display:flex; flex-wrap:wrap; gap:12px 20px; align-items:flex-end;
  margin:0 0 20px; padding-bottom:12px; border-bottom:1px solid var(--rule);
}
.program-switch label{font-size:12px; color:var(--muted); display:flex; flex-direction:column; gap:4px}
.program-switch select{padding:8px 10px; border:1px solid var(--rule); font-size:14px; background:#fff}
.learner-program-bar{
  display:flex; justify-content:flex-end; padding:8px 20px;
  background:var(--tint, #f4f6f9); border-bottom:1px solid var(--rule);
}
.dash-grid{
  display:grid; grid-template-columns:repeat(auto-fill,minmax(240px,1fr)); gap:14px;
  margin:18px 0 8px;
}
.dash-card{
  display:block; background:var(--paper); border:1px solid var(--rule);
  border-top:3px solid var(--navy); padding:16px 18px; color:inherit;
  text-decoration:none;
}
.dash-card:hover{border-color:var(--blue); text-decoration:none}
.dash-card.warn{border-top-color:var(--warn)}
.dash-card h2{
  /* без text-transform: аббревиатуры ИИ/ПР/ГОСТ… сохраняют написание (DM-049) */
  font-size:13px; letter-spacing:.04em; text-transform:none;
  color:var(--blue); margin:0 0 8px; font-weight:700;
}
.dash-card .num{font-size:28px; font-weight:700; color:var(--navy); margin:0; line-height:1.1}
.dash-card .of{font-size:16px; color:var(--muted); font-weight:500}
.dash-sub{margin:8px 0 0; font-size:13px; color:var(--grey)}
.dash-empty{margin:8px 0 0; font-size:13px; color:var(--muted)}
.dash-warns{margin:8px 0 0; padding-left:18px; font-size:13px; line-height:1.55}
.dash-card .dash-warns{display:block}
.dash-grid > .dash-card{min-width:0; box-sizing:border-box}
.data-table{width:100%; border-collapse:collapse; font-size:14px}
.data-table th{
  text-align:left; background:var(--navy); color:#fff; font-weight:600;
  font-size:12px; letter-spacing:.04em; padding:8px 10px;
  /* uppercase убираем: колонка «ИИ» не должна становиться «ии»/ломаться */
  text-transform:none;
}
.data-table td{padding:8px 10px; border-bottom:1px solid var(--rule); vertical-align:top}
.data-table tbody tr:nth-child(even){background:var(--tint)}
.data-table .empty{color:var(--muted); text-align:center; padding:20px}
.muted{color:var(--muted); font-size:12.5px}
.st{
  display:inline-block; font-size:11.5px; font-weight:600; padding:2px 7px;
  letter-spacing:.02em;
}
.st-wait, .st-new, .st-invited, .st-submitted, .st-pending_teacher{background:var(--warn-bg); color:var(--warn)}
.st-active, .st-approved, .st-ok, .st-published{background:var(--ex-bg); color:var(--ex)}
.st-disabled, .st-rejected, .st-off{background:var(--info-bg); color:var(--info)}
.eyebrow{font-size:11.5px; letter-spacing:.14em; text-transform:uppercase; color:var(--blue); font-weight:600}

@media (max-width:420px){
  .dash-grid{grid-template-columns:1fr}
  .topbar{padding:10px 12px; gap:10px}
  .topbar nav{gap:10px; font-size:13px}
  .staff-bar{flex-direction:column; align-items:stretch}
  .data-table{min-width:520px}
  .data-table th, .data-table td{padding:8px 6px; font-size:13px}
}
.form-error{color:var(--warn); background:#fff4e8; padding:10px 12px; margin:0 0 12px; font-size:14px}
.form-ok{color:#1a6b3c; background:#e8f5e9; padding:10px 12px; margin:0 0 12px; font-size:14px}
.auth-form label.has-error input{border-color:var(--warn)}
.auth-form .field-error{color:var(--warn); font-size:12.5px; margin-top:2px}
.auth-links{margin:16px 0 0; font-size:14px}
.auth-hint{margin:12px 0 0; font-size:12px; color:var(--muted)}
.hp{position:absolute; left:-9999px; height:0; overflow:hidden}
.tabs{display:flex; gap:12px; flex-wrap:wrap; margin:0 0 8px; align-items:center}
.tabs a{color:var(--muted); text-decoration:none; padding:6px 0; border-bottom:2px solid transparent}
.tabs a.on{color:var(--navy); border-color:var(--blue); font-weight:600}
.tabs-sep{display:inline-block; width:1px; height:1.1em; background:var(--rule); margin:0 2px; vertical-align:middle}
.inline-form{display:flex; flex-wrap:wrap; gap:8px; align-items:center; margin-top:8px}
.chk{display:inline-flex; gap:6px; align-items:flex-start; font-size:13px; margin:4px 10px 4px 0}
.perm-group{border:1px solid var(--rule); padding:10px 12px; margin:8px 0}
.perm-group legend{padding:0 6px; color:var(--navy); font-weight:600}
.site-foot{
  margin:32px 20px 20px; padding-top:16px; border-top:1px solid var(--rule);
  font-size:13px; color:var(--muted);
}
.site-foot a{color:var(--blue)}
.auth-body .site-foot{
  margin:16px 0 0; width:100%; max-width:420px; text-align:center;
  border-top:0; padding-top:0; flex-shrink:0;
}

.tutor-fab{
  position:fixed; right:20px; bottom:20px; z-index:40;
  background:var(--navy); color:#fff; border:0; padding:12px 16px;
  cursor:pointer; font-size:14px; box-shadow:0 8px 24px rgba(27,54,93,.25);
}
.tutor-panel{
  position:fixed; right:20px; bottom:68px; z-index:41;
  width:min(420px, calc(100vw - 24px)); max-height:min(70vh, 560px);
  background:var(--paper); border:1px solid var(--rule);
  display:none; flex-direction:column; box-shadow:0 16px 40px rgba(27,54,93,.18);
}
.tutor-panel.is-open{display:flex}
.tutor-panel[hidden]{display:none !important}
.tutor-panel header{
  display:flex; align-items:center; gap:8px; padding:10px 12px;
  border-bottom:1px solid var(--rule); color:var(--navy);
  flex-shrink:0;
}
.tutor-hint{font-size:12px; color:var(--muted); flex:1}
.tutor-close{
  border:0; background:transparent; font-size:22px; cursor:pointer; line-height:1;
  min-width:44px; min-height:44px; margin-left:auto; color:var(--navy);
}
.tutor-log{flex:1; overflow:auto; padding:10px 12px; font-size:14px}
.tutor-msg{margin:0 0 10px}
.tutor-msg.q{background:var(--tint); padding:8px 10px}
.tutor-msg.a{padding:8px 0}
.tutor-src{margin:8px 0 0; padding-left:18px; font-size:13px}
.tutor-refuse{color:var(--warn)}
.tutor-form{display:flex; gap:8px; padding:10px; border-top:1px solid var(--rule)}
.tutor-form textarea{flex:1; font:inherit; padding:8px; border:1px solid var(--rule); resize:none}
.tutor-form button{background:var(--navy); color:#fff; border:0; padding:8px 12px; cursor:pointer}


/* DM-064 assignments */
.data-table{width:100%;border-collapse:collapse;font-size:14px}
.data-table th,.data-table td{padding:8px 10px;border-bottom:1px solid var(--rule);text-align:left;vertical-align:top}
.data-table th{background:var(--navy);color:#fff;font-weight:600}
.asg-block{margin:0 0 16px}
.asg-block h2{margin:0 0 10px;color:var(--navy);font-size:1.15rem}
.asg-block h3{margin:14px 0 8px;font-size:1rem;color:var(--navy)}
.asg-link{display:grid;grid-template-columns:minmax(120px,220px) 1fr;gap:6px 16px;margin:0}
.asg-link dt{font-weight:600;color:var(--navy)}
.asg-link dd{margin:0}
.asg-lec-links{margin:12px 0 0;font-size:14px}
.asg-form label{display:block;margin:12px 0 6px;font-weight:600;color:var(--navy)}
.asg-form textarea,.asg-form input[type=file]{width:100%;max-width:720px;font:inherit;padding:10px;border:1px solid var(--rule)}
.asg-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.btn{display:inline-block;border:0;padding:10px 16px;cursor:pointer;font:inherit;text-decoration:none}
.btn.primary{background:var(--navy);color:#fff}
.btn.secondary{background:var(--tint);color:var(--navy);border:1px solid var(--rule)}
.asg-body-view{white-space:pre-wrap;background:var(--tint);padding:12px;border:1px solid var(--rule);font:inherit;max-width:720px}
.asg-files{margin:8px 0;padding-left:18px}
.status{display:inline-block;padding:2px 8px;font-size:12px;border:1px solid var(--rule);background:#fff}
.status-draft{border-color:#c4a35a}
.status-submitted,.status-ai_draft{border-color:var(--blue);color:var(--blue)}
.status-graded{border-color:#2e7d32;color:#2e7d32}
.chip.warn{background:#FEF3E2;border-color:#e0a86a}
.flash{padding:10px 12px;margin:0 0 14px;border:1px solid var(--rule)}
.flash.ok{background:#E8F5E9}
.flash.warn{background:#FEF3E2}

/* DM-065 grading */
.grade-grid{display:grid;grid-template-columns:1fr 1.2fr 1.2fr;gap:14px;align-items:start}
@media (max-width:960px){.grade-grid{grid-template-columns:1fr}}
.grade-crit{border-bottom:1px solid var(--rule);padding:10px 0;margin:0 0 8px}
.grade-crit label{display:block;margin:8px 0 4px;font-size:13px}
.grade-crit input[type=number],.grade-crit textarea{width:100%;font:inherit;padding:8px;border:1px solid var(--rule)}
.ai-draft{font-size:13px;background:var(--tint);padding:8px;margin:6px 0;white-space:pre-wrap}
.status-ai_draft{border-color:#c4a35a;color:#8a6a20}

/* DM-069 chat */
.btn-primary{background:var(--navy);color:#fff}
.asg-form select,.asg-form input[type=text]{width:100%;max-width:720px;font:inherit;padding:10px;border:1px solid var(--rule)}
.chat-msg{padding:12px 0;border-bottom:1px solid var(--rule)}
.chat-msg:last-child{border-bottom:0}
.chat-meta{margin:0 0 6px;font-size:13px;color:var(--muted)}
.chat-body{white-space:pre-wrap;margin:0}
.chat-files{margin:8px 0 0;padding-left:18px;font-size:13px}
.chat-msg.from-staff{background:var(--tint);padding:12px;margin:0 0 8px;border-bottom:0}
.ann-body p{margin:0 0 8px}
.meta{font-size:13px;color:var(--muted)}
.form-error{color:#a33;margin:0 0 12px}
.form-ok{color:#2e7d32;margin:0 0 12px}
.empty{color:var(--muted)}
.inline-form label{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--muted)}
.inline-form select{padding:8px;font:inherit;border:1px solid var(--rule)}

/* DM-072 lecture editor */
.lec-editor{border:1px solid var(--rule);background:#fff;margin:0 0 12px}
.lec-toolbar{display:flex;flex-wrap:wrap;gap:4px;padding:8px;border-bottom:1px solid var(--rule);background:var(--tint)}
.lec-toolbar button{font:inherit;font-size:13px;padding:4px 8px;border:1px solid var(--rule);background:#fff;cursor:pointer}
.lec-toolbar button:hover{border-color:var(--navy)}
.lec-surface{min-height:280px;max-height:70vh;overflow:auto;padding:16px 18px;outline:none}
.lec-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-end;margin:0 0 1rem}
.lec-actions .inline-note{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--muted)}
.lec-actions .inline-note input{padding:6px 8px;border:1px solid var(--rule);min-width:220px}
.tag{display:inline-block;font-size:11px;padding:1px 6px;border:1px solid var(--rule);color:var(--muted);vertical-align:middle}
.conflict-card{border:1px solid var(--rule);padding:12px 14px;margin:0 0 14px;background:#fff}
.conflict-card h3{margin:0 0 10px;font-size:1rem;color:var(--navy)}
.conflict-def{padding:10px 0;border-top:1px solid var(--rule)}
.conflict-def.is-canonical{background:#e8f5e9;margin:0 -14px;padding:10px 14px}
.btn-danger{font:inherit;font-size:13px;color:#a33;background:transparent;border:1px solid #c99;padding:4px 8px;cursor:pointer}
.qa-list{list-style:none;padding:0;margin:0}
.qa-list li{margin:0 0 16px;padding:0 0 12px;border-bottom:1px solid var(--rule)}
table.data{width:100%;border-collapse:collapse;font-size:14px}
table.data th,table.data td{border-bottom:1px solid var(--rule);padding:8px 6px;text-align:left;vertical-align:top}

/* DM-075 staff side nav — не путать с .side оглавления лекции */
.staff-shell{
  display:grid;
  grid-template-columns:220px minmax(0,1fr);
  gap:0 28px;
  align-items:start;
  max-width:1200px;
  margin:0 auto;
  padding:16px 20px 48px;
}
.staff-main .page{padding-left:0;padding-right:0;max-width:none}
.staff-main > .page{margin:0}
.staff-side{
  position:sticky;
  top:12px;
  align-self:start;
  background:#f7f5f0;
  border:1px solid #d9d3c7;
  border-radius:2px;
  padding:10px 0 12px;
  max-height:calc(100vh - 24px);
  overflow:auto;
}
.staff-side__head{display:none}
.staff-side__title{font-size:12px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:#6a6358}
.staff-side__close{display:none}
.staff-side__nav{padding:0 8px}
.staff-side__list{list-style:none;margin:0;padding:0}
.staff-side__list a{
  display:flex;align-items:center;justify-content:space-between;gap:6px;
  padding:6px 10px;margin:1px 0;border-radius:2px;
  color:#3d3a34;text-decoration:none;font-size:13.5px;line-height:1.35;
  border-left:3px solid transparent;
}
.staff-side__list a:hover{background:#efeae1;text-decoration:none}
.staff-side__list a.on{
  background:#fff;color:var(--navy);font-weight:600;
  border-left-color:#b8956c;
}
.staff-side__list--home{margin:0 0 10px;padding-bottom:8px;border-bottom:1px solid #d9d3c7}
.staff-side__group{margin:4px 0}
.staff-side__group > summary{
  cursor:pointer;list-style:none;padding:8px 10px;font-size:12px;font-weight:700;
  letter-spacing:.03em;text-transform:uppercase;color:#6a6358;user-select:none;
}
.staff-side__group > summary::-webkit-details-marker{display:none}
.staff-side__group > summary::before{content:"▸ ";font-size:10px}
.staff-side__group[open] > summary::before{content:"▾ "}
.staff-side__group .staff-side__list{padding:0 0 6px}
.staff-side__program{padding:10px 12px 0;border-top:1px solid #d9d3c7;margin-top:8px}
.staff-nav-toggle{
  display:none;margin:0 0 12px;padding:8px 12px;font:inherit;font-size:14px;
  border:1px solid #d9d3c7;background:#f7f5f0;color:var(--navy);cursor:pointer;
}
.staff-side-backdrop{display:none}

@media (max-width:720px){
  .staff-shell{grid-template-columns:1fr;padding:12px 14px 40px}
  .staff-nav-toggle{display:inline-block}
  .staff-side{
    position:fixed;z-index:40;left:0;top:0;bottom:0;width:min(280px,88vw);
    max-height:none;border-radius:0;border:none;border-right:1px solid #d9d3c7;
    transform:translateX(-105%);transition:transform .2s ease;padding-top:0;
  }
  body.staff-nav-open .staff-side{transform:translateX(0)}
  .staff-side__head{
    display:flex;align-items:center;justify-content:space-between;
    padding:12px 12px 8px;border-bottom:1px solid #d9d3c7;
  }
  .staff-side__close{
    display:inline-block;border:0;background:transparent;font-size:22px;
    line-height:1;cursor:pointer;color:#6a6358;padding:4px 8px;
  }
  .staff-side-backdrop{
    display:block;position:fixed;inset:0;z-index:35;background:rgba(30,28,24,.35);
  }
  .staff-side-backdrop[hidden]{display:none !important}
}

/* DM-078/079 О продукте */
.product-page{padding-top:28px}
.product-about{max-width:70ch}
.product-about h2{
  font-family:var(--sans); font-size:18px; font-weight:700; color:var(--navy);
  margin:28px 0 10px;
}
.product-about ul{margin:0 0 16px; padding-left:22px}
.product-contacts{margin:0 0 16px}
.product-contacts__row{display:grid; grid-template-columns:10em 1fr; gap:8px 16px; margin:0 0 10px}
.product-contacts dt{margin:0; color:var(--muted); font-family:var(--sans); font-size:14px}
.product-contacts dd{margin:0}
@media (max-width:420px){
  .product-contacts__row{grid-template-columns:1fr; gap:2px}
}

/* DM-080 Помощь */
.help-mast .help-roles{display:flex; flex-wrap:wrap; gap:8px; margin:14px 0 16px}
.help-role{
  display:inline-block; padding:6px 12px; border:1px solid var(--rule);
  border-radius:4px; text-decoration:none; color:var(--navy); font-size:14px;
  font-family:var(--sans);
}
.help-role.on{background:var(--navy); color:#fff; border-color:var(--navy)}
.help-search{
  display:flex; flex-wrap:wrap; align-items:center; gap:10px 14px;
  margin:0 0 16px; max-width:70ch;
}
.help-search__field{flex:1 1 200px}
.help-search__field input{
  width:100%; font:inherit; padding:8px 10px; border:1px solid var(--rule);
}
.help-search__scope{font-size:13px; color:var(--muted); display:inline-flex; gap:6px; align-items:center}
.help-hits{margin:0 0 18px; max-width:70ch}
.help-hits ul{margin:8px 0 0; padding-left:18px}
.help-hits__snip{font-size:14px; color:var(--grey); margin:4px 0 10px}
mark.help-mark, .help-mark{
  background:#ffe9a8; color:inherit; padding:0 2px;
}
.help-how{
  font-size:14px; font-weight:500; font-family:var(--sans);
  margin-left:10px; white-space:nowrap;
}
.badge-demo{
  display:inline-block; margin-left:6px; padding:1px 6px; font-size:11px;
  font-family:var(--sans); background:var(--tint); color:var(--muted);
  border:1px solid var(--rule); border-radius:3px; vertical-align:middle;
}
.badge-warn{
  display:inline-block; margin-left:6px; padding:1px 6px; font-size:11px;
  font-family:var(--sans); background:#fff3e0; color:#b45309;
  border:1px solid #f0c78a; border-radius:3px; vertical-align:middle;
}
.row-email-change td{background:#fff8ef !important}
.bulk-bar{
  display:flex; flex-wrap:wrap; gap:10px; align-items:center;
  margin:0 0 12px; padding:10px 12px;
}
.users-table .users-row td{height:52px; vertical-align:middle; white-space:nowrap}
.users-table .user-link{display:flex; flex-direction:column; gap:2px; text-decoration:none; color:inherit}
.users-table .user-link:hover strong{text-decoration:underline}
.users-table .col-check{width:36px; text-align:center}
.users-table .cell-clip{
  max-width:220px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap;
}
.roles-matrix .perm-col{min-width:240px}
.roles-matrix .role-col{text-align:center; width:110px; vertical-align:middle}
.roles-matrix .group-row td{
  background:var(--tint); font-weight:600; color:var(--navy); padding:8px 10px;
}
.roles-matrix .perm-name{display:block; font-weight:500}
.roles-matrix .perm-code{
  display:block; margin-top:2px; font-size:11px; color:var(--muted); font-family:ui-monospace,monospace;
}
.roles-matrix .perm-danger .perm-name{color:#9a3412}
.btn-muted{
  background:var(--tint); color:var(--navy); border:1px solid var(--rule);
  padding:8px 12px; cursor:pointer; font:inherit; font-size:13px;
}
.help-pdf .btn{
  display:inline-block; padding:8px 14px; background:var(--navy); color:#fff;
  border-radius:4px; font-size:13.5px; font-family:var(--sans); text-decoration:none;
}
.help-pdf .btn:hover{text-decoration:none; opacity:.92}
.visually-hidden{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px;
  overflow:hidden; clip:rect(0,0,0,0); border:0;
}
@media (max-width:800px){
  .help-how{display:inline-block; margin:6px 0 0; margin-left:0}
}