@font-face { font-family: AppFont; src: url(fonts/noto-ar-400.woff2) format("woff2"); font-weight: 400; unicode-range: U+0600-06FF, U+0750-077F, U+FB50-FDFF, U+FE70-FEFF; font-display: swap; }
@font-face { font-family: AppFont; src: url(fonts/noto-ar-700.woff2) format("woff2"); font-weight: 600 700; unicode-range: U+0600-06FF, U+0750-077F, U+FB50-FDFF, U+FE70-FEFF; font-display: swap; }
@font-face { font-family: AppFont; src: url(fonts/la-400.woff2) format("woff2"); font-weight: 400; unicode-range: U+0000-024F, U+2000-206F; font-display: swap; }
@font-face { font-family: AppFont; src: url(fonts/la-600.woff2) format("woff2"); font-weight: 600 700; unicode-range: U+0000-024F, U+2000-206F; font-display: swap; }

:root {
  --ink: #202639; --muted: #535b70; --line: #e2e5ea; --bg: #f6f7fc; --card: #fff;
  --primary: #1e5631; --primary-dark: #143d23; --tint: #e7f0ea; --accent: #f2b84b;
  --success: #1f7a54; --success-bg: #e3f4ec; --danger: #b3362f; --danger-bg: #fbe9e7;
  --warning: #8a5a00; --warning-bg: #fdf1d8; --info: #1d5f8a; --info-bg: #e4f0f8;
  --link: var(--primary); --btn-hover: var(--primary-dark); --card-glow: rgba(30, 86, 49, .08); --hover: #fbfcfc; --chip: #edf0f2; --field: #d5dae2; --line-strong: #c3cad3;
  --radius: 18px; --shadow: 0 1px 2px rgba(32, 38, 57, .04), 0 6px 18px rgba(32, 38, 57, .05);
}
[data-theme=dark] {
  color-scheme: dark;
  --ink: #e7eee9; --muted: #a2b2a8; --line: #2a362e; --bg: #0f1512; --card: #172019;
  --primary: #2a7a47; --primary-dark: #0d2415; --tint: #1b3525; --link: #83d6a0; --btn-hover: #236a3c;
  --success: #62d3a4; --success-bg: #15392c; --danger: #f08a82; --danger-bg: #43211f;
  --warning: #e8bd6a; --warning-bg: #3f3116; --info: #7cc0ea; --info-bg: #16344a;
  --card-glow: rgba(255, 255, 255, .07); --hover: #1f2a22; --chip: #27332b; --field: #3a4a40; --line-strong: #47584d;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 4px 16px rgba(0, 0, 0, .25);
}
[data-theme=dark] .btn-danger { border-color: #6b3a36; }
[data-theme=dark] .btn-danger-solid { background: #b3362f; border-color: #b3362f; }
/* Certificates always print and display as light documents. */
body.cert-page { color-scheme: light; --ink: #202639; --muted: #535b70; --line: #e2e5ea; --card: #fff; --primary: #1e5631; --btn-hover: #143d23; --hover: #fbfcfc; --link: #1e5631; --line-strong: #c4d0d5; color: var(--ink); }
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 15.5px/1.75 AppFont, "Segoe UI", Tahoma, sans-serif; }
h1, h2, h3 { line-height: 1.35; margin: 0 0 .5em; font-weight: 700; }
h1 { font-size: 1.55rem; } h2 { font-size: 1.1rem; } h3 { font-size: 1rem; }
p { margin: 0 0 .8em; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
small { font-size: .82em; }
code { font-size: .88em; word-break: break-all; }
.muted { color: var(--muted); }
.ic { flex: none; vertical-align: middle; }
.spacer { flex: 1; }
:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; }

/* App shell */
.app { display: flex; min-height: 100vh; }
.sidebar { width: 256px; flex: none; background: var(--card); color: var(--muted); border-inline-end: 1px solid var(--line); padding: 16px 12px; position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.sidebar .brand { color: var(--ink); margin-bottom: 14px; padding: 2px 8px; }
.sidebar nav small { display: block; padding: 14px 12px 4px; color: var(--muted); font-size: .76rem; font-weight: 600; }
.sidebar nav a { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 14px; color: inherit; font-size: .95rem; margin-block-end: 2px; }
.sidebar nav a:hover { background: var(--hover); color: var(--ink); text-decoration: none; }
.sidebar nav a.active { background: var(--tint); color: var(--link); font-weight: 700; }
.count { margin-inline-start: auto; background: var(--accent); color: var(--ink); border-radius: 20px; padding: 0 7px; font-size: .75rem; }
.brand { display: flex; align-items: center; gap: 10px; font-size: 1.05rem; }
.brand:hover { text-decoration: none; }
.logo { display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: 12px; background: var(--primary); color: #fff; flex: none; }
.logo-lg { width: 54px; height: 54px; border-radius: 14px; margin-bottom: 10px; }
.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.topbar { display: flex; align-items: center; gap: 8px; height: 58px; padding: 0 22px; background: var(--card); border-block-end: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.topbar form { margin: 0; }
.icon-btn { position: relative; display: inline-grid; place-items: center; width: 38px; height: 38px; border: 0; border-radius: 8px; background: none; color: var(--ink); cursor: pointer; }
.icon-btn:hover { background: var(--bg); }
.menu-btn { display: none; }
.dot { position: absolute; inset-block-start: 3px; inset-inline-end: 3px; background: var(--danger); color: #fff; min-width: 16px; height: 16px; line-height: 16px; border-radius: 16px; font-size: .66rem; text-align: center; padding: 0 3px; }
.user-chip { display: flex; align-items: center; gap: 6px; color: var(--ink); padding: 6px 10px; border-radius: 8px; font-size: .92rem; }
.user-chip:hover { background: var(--bg); text-decoration: none; }
.lang { padding: 6px 10px; font-size: .88rem; }
.content { padding: 24px 26px 48px; width: 100%; max-width: 1240px; margin-inline: auto; }

/* Public */
.public-top { display: flex; align-items: center; gap: 18px; padding: 12px 28px; background: var(--card); border-block-end: 1px solid var(--line); flex-wrap: wrap; }
.public-top nav { display: flex; gap: 16px; }
.public-top nav a { color: var(--ink); font-size: .95rem; }
.hero { display: flex; align-items: center; justify-content: space-between; gap: 24px; background: linear-gradient(135deg, #0e2917, #1e5631 55%, #2f7d4a); color: #fff; border-radius: 24px; padding: 40px 44px; margin-block-end: 22px; overflow: hidden; }
.hero h1 { font-size: 2.4rem; margin-bottom: .25em; }
.hero p { font-size: 1.1rem; margin: 0; color: #d9e8eb; }

/* Common */
.page-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 14px; margin-block-end: 18px; flex-wrap: wrap; }
.page-head h1 { margin: 0; }
.page-head p { margin: 2px 0 0; }
.actions, .row-actions { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.row-actions { justify-content: flex-end; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; margin-block-end: 16px; box-shadow: var(--shadow); }
.panel.note { display: flex; gap: 8px; align-items: flex-start; background: var(--tint); box-shadow: none; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 9px 20px; border: 1px solid var(--line); border-radius: 999px; background: var(--card); color: var(--ink); font: inherit; font-size: .93rem; font-weight: 600; cursor: pointer; white-space: nowrap; }
.btn:hover { border-color: var(--line-strong); background: var(--hover); text-decoration: none; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--btn-hover); border-color: var(--btn-hover); }
.btn-danger { color: var(--danger); border-color: #eccbc8; }
.btn-danger:hover { background: var(--danger-bg); border-color: #e4b3ae; }
.btn-sm { padding: 5px 12px; font-size: .84rem; }
.btn-block { width: 100%; }
.badge { display: inline-block; padding: 1px 9px; border-radius: 20px; font-size: .8rem; font-weight: 600; white-space: nowrap; }
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-info { background: var(--info-bg); color: var(--info); }
.badge-muted { background: var(--chip); color: var(--muted); }
.alert { padding: 10px 14px; border-radius: 8px; margin-block-end: 14px; font-size: .95rem; }
.alert-success { background: var(--success-bg); color: var(--success); }
.alert-danger { background: var(--danger-bg); color: var(--danger); }
.alert-warning { background: var(--warning-bg); color: var(--warning); }
.alert-info { background: var(--info-bg); color: var(--info); }
.empty { text-align: center; padding: 60px 20px; color: var(--muted); }
.empty h2 { color: var(--ink); }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-block-end: 18px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow); }
.stat span { display: block; color: var(--muted); font-size: .86rem; }
.stat b { display: block; font-size: 1.65rem; line-height: 1.3; font-weight: 700; }
.stat small { color: var(--muted); }
.progress { height: 7px; border-radius: 7px; background: var(--chip); overflow: hidden; margin: 8px 0; }
.progress i { display: block; height: 100%; background: var(--primary); border-radius: 7px; }
.pager { display: flex; gap: 8px; align-items: center; margin-block-end: 18px; }

/* Forms */
.form { display: flex; flex-direction: column; gap: 12px; }
.form > .btn { align-self: flex-start; }
.btn-block { align-self: stretch !important; }
.form label, .form-grid label { display: flex; flex-direction: column; gap: 4px; font-size: .9rem; font-weight: 600; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 12px 16px; border: 0; padding: 0; margin: 0; }
.form-grid legend { font-weight: 700; padding: 0 0 6px; }
input:not([type=checkbox], [type=radio], [type=color]), select, textarea { width: 100%; padding: 8px 11px; border: 1px solid var(--field); border-radius: 12px; background: var(--card); color: var(--ink); font: inherit; font-weight: 400; }
textarea { resize: vertical; }
input[type=file] { padding: 5px; }
input[type=color] { width: 60px; height: 38px; padding: 2px; border: 1px solid var(--field); border-radius: 7px; }
label.check { flex-direction: row !important; align-items: center; gap: 8px; font-weight: 400 !important; }
.inline { display: flex; gap: 8px; align-items: center; margin: 0; flex-wrap: nowrap; }
.inline.grow, .grow { flex: 1; min-width: 0; width: 100%; }
.filters { display: flex; gap: 8px; margin-block-end: 16px; flex-wrap: wrap; }
.filters input, .filters select { width: auto; flex: 1 1 170px; max-width: 320px; background: var(--card); }
.tax-row { margin-block-end: 8px; }
.pick-list { display: grid; gap: 6px; }
.pick-list > div { display: flex; justify-content: space-between; align-items: center; gap: 10px; border-block-end: 1px solid var(--line); padding-block-end: 6px; }
.pick-list input[type=number] { width: 80px; flex: none; }

/* Tables */
.table-wrap { overflow-x: auto; }
.table-wrap.panel { padding: 4px 8px; }
table { width: 100%; border-collapse: collapse; font-size: .93rem; }
th { text-align: start; color: var(--muted); font-weight: 600; font-size: .83rem; white-space: nowrap; }
th, td { padding: 9px 10px; border-block-end: 1px solid var(--line); vertical-align: middle; }
tr:last-child td { border-block-end: 0; }
table.compact { font-size: .84rem; }
td.details { max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Courses */
.course-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(285px, 1fr)); gap: 22px; }
.course-card { display: flex; flex-direction: column; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; color: var(--ink); box-shadow: var(--shadow); position: relative; transform: perspective(900px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)) translateY(var(--lift, 0px)); transition: transform .18s ease-out, box-shadow .2s; will-change: transform; }
.course-card:hover { --lift: -3px; text-decoration: none; box-shadow: 0 6px 22px rgba(22, 38, 46, .1); }
.cover { position: relative; overflow: hidden; aspect-ratio: 16 / 10; background: var(--tint); }
.cover img { width: 100%; height: 100%; object-fit: cover; }
@keyframes sheen { from { transform: translateX(-75%); opacity: 1; } to { transform: translateX(75%); opacity: 1; } }
.cover img { position: relative; display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .5s cubic-bezier(.2, .7, .3, 1); }
/* A single band of light crosses the cover when the pointer enters */
.cover::before { content: ""; position: absolute; inset: 0 -40%; z-index: 1; pointer-events: none; opacity: 0;
  background: linear-gradient(105deg, transparent 38%, rgba(255, 255, 255, .34) 50%, transparent 62%); }
/* Soft light under the pointer */
.cover::after { content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none; opacity: 0; transition: opacity .35s;
  background: radial-gradient(circle 170px at var(--mx, 50%) var(--my, 50%), rgba(255, 255, 255, .26), transparent 72%); }
/* Gold rim of light that follows the pointer around the card edge */
.course-card::before { content: ""; position: absolute; inset: 0; z-index: 3; padding: 1.5px; border-radius: inherit; pointer-events: none; opacity: 0; transition: opacity .35s;
  background: radial-gradient(circle 240px at var(--mx, 50%) var(--my, 50%), #49b06f, transparent 72%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0); }
.course-card::after { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0; transition: opacity .35s; background: radial-gradient(circle 260px at var(--mx, 50%) var(--my, 50%), var(--card-glow), transparent 72%); }
.course-card:hover { box-shadow: 0 16px 36px rgba(30, 86, 49, .18); }
.course-card:hover .cover img { transform: scale(1.06); }
.course-card:hover .cover::before { animation: sheen .85s cubic-bezier(.3, .6, .3, 1); }
.course-card:hover::before, .course-card:hover::after, .course-card:hover .cover::after { opacity: 1; }
.course-body { padding: 16px 20px 16px; flex: 1; display: flex; flex-direction: column; }
.course-body h3 { font-size: 1.12rem; margin-bottom: .7em; }
.course-body .meta { margin-top: auto; padding-block-start: 12px; border-block-start: 1px solid var(--line); }
.course-body .card-foot { padding-block-start: 12px; border-block-start: 1px solid var(--line); }
.card-foot .continue { display: inline-flex; align-items: center; gap: 6px; color: var(--link); }
.path-card { border-block-start: 4px solid var(--accent); }
.eyebrow { color: var(--link); font-weight: 600; }
.meta { display: flex; flex-wrap: wrap; gap: 4px 14px; color: var(--muted); font-size: .86rem; }
.meta span { display: inline-flex; align-items: center; gap: 5px; }
.card-foot { display: flex; justify-content: space-between; align-items: center; margin-top: auto; }
.course-hero { display: flex; justify-content: space-between; gap: 26px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; margin-block-end: 16px; box-shadow: var(--shadow); flex-wrap: wrap; }
.course-hero > div:first-child { flex: 1 1 340px; }
.enroll-box { flex: 0 1 270px; display: flex; flex-direction: column; gap: 8px; }
.enroll-box p, .enroll-box form { margin: 0; }
.two-col { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 16px; align-items: start; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 16px; align-items: start; }
.section-title { margin: 14px 0 4px; font-size: .94rem; }
.section-head { display: flex; gap: 6px; align-items: center; margin-block-end: 8px; flex-wrap: wrap; }
.lesson-list { list-style: none; margin: 0; padding: 0; }
.lesson-list li > a, .lesson-list li > .locked, .lesson-list.static li { display: flex; align-items: center; gap: 8px; padding: 6px 8px; border-radius: 7px; color: var(--ink); font-size: .92rem; }
.lesson-list.static li span { flex: 1; }
.lesson-list li > a:hover { background: var(--bg); text-decoration: none; }
.lesson-list li.current > a { background: var(--tint); font-weight: 600; }
.lesson-list li.done .ic { color: var(--success); }
.lesson-list .locked { color: var(--muted) !important; }
ul.plain { margin: 0; padding-inline-start: 18px; }
.prose p:last-child { margin-bottom: 0; }
.prose h2 { font-size: 1.2rem; margin: 1.3em 0 .45em; color: var(--link); }
.prose h3 { font-size: 1.03rem; margin: 1.1em 0 .35em; }
.prose ul, .prose ol { margin: 0 0 .9em; padding-inline-start: 22px; }
.prose li { margin-block-end: .3em; }
.prose .table-wrap { margin: 0 0 1em; border: 1px solid var(--line); border-radius: 8px; }
.prose th { background: var(--tint); color: var(--ink); white-space: normal; }
.row-actions { flex-wrap: nowrap; }
.row-actions form { margin: 0; }
.nowrap { white-space: nowrap; }
.builder-table td.num { width: 28px; text-align: center; }
.builder-table td.lesson-name { width: 100%; min-width: 180px; }
details.outline { border-block-end: 1px solid var(--line); }
details.outline:last-of-type { border-block-end: 0; }
details.outline summary { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 10px 2px; font-weight: 600; font-size: .95rem; cursor: pointer; list-style: none; }
details.outline summary::-webkit-details-marker { display: none; }
details.outline summary::after { content: "▾"; color: var(--muted); }
details.outline[open] summary::after { content: "▴"; }
details.outline summary span { flex: 1; }
details.outline summary small { white-space: nowrap; font-weight: 400; }
details.outline ul { padding-block-end: 8px; }
.lesson-list.static li.done .ic { color: var(--success); }
.lesson { max-width: 820px; }
.lesson h1 { margin-bottom: .7em; }
.lesson .prose { font-size: 1.03rem; line-height: 1.95; }
.kicker { color: var(--muted); font-size: .86rem; margin: 0 0 2px; }
.lesson-foot { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.review { margin: 0; padding-inline-start: 22px; }
.review li { padding: 10px 0; border-block-end: 1px solid var(--line); }
.review li:last-child { border: 0; }
.review p { margin: 0 0 6px; }
.review .callout { margin: 8px 0 0; }
.review .correct-answer { display: flex; align-items: center; gap: 6px; margin: 8px 0 0; color: var(--success); font-weight: 600; }
.callout { background: var(--tint); border-inline-start: 4px solid var(--accent); border-radius: 6px; padding: 10px 14px; margin: 0 0 1em; }

/* Player and quiz */
.player { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 16px; align-items: start; }
.player-nav { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; position: sticky; top: 74px; max-height: calc(100vh - 90px); overflow-y: auto; }
.player-nav .back { font-weight: 700; color: var(--ink); }
.media { width: 100%; border-radius: 8px; background: #000; margin-block-end: 14px; display: block; }
.ratio { aspect-ratio: 16 / 9; }
.ratio iframe { width: 100%; height: 100%; border: 0; border-radius: 8px; }
.lesson-foot { margin-top: 18px; padding-top: 14px; border-block-start: 1px solid var(--line); }
.lesson-foot form { margin: 0; }
.question { border: 1px solid var(--line); margin-inline: 0; }
.question legend { padding: 0 6px; display: flex; align-items: center; gap: 8px; }
.q-no { display: inline-grid; place-items: center; width: 26px; height: 26px; background: var(--tint); color: var(--link); border-radius: 50%; font-weight: 700; font-size: .86rem; }
.option { display: flex; gap: 10px; align-items: center; padding: 8px 12px; border: 1px solid var(--line); border-radius: 8px; margin-block-end: 6px; cursor: pointer; }
.option:hover { background: var(--bg); }
.timer { position: sticky; top: 66px; z-index: 3; display: inline-flex; gap: 8px; align-items: center; background: var(--primary); color: #fff; padding: 6px 16px; border-radius: 8px; margin-block-end: 14px; font-weight: 700; font-variant-numeric: tabular-nums; }
.timer.urgent { background: var(--danger); }
.answer { background: var(--bg); border-inline-start: 3px solid var(--primary); margin: 0 0 12px; padding: 10px 14px; border-radius: 6px; }
.notif-list { list-style: none; padding: 4px 18px; }
.notif-list li { display: flex; justify-content: space-between; gap: 14px; padding: 10px 0; border-block-end: 1px solid var(--line); }
.notif-list li:last-child { border: 0; }
.notif-list li.unread { font-weight: 600; }
.verify-result dl { display: grid; grid-template-columns: 140px 1fr; gap: 6px 12px; margin: 12px 0 0; }
.verify-result dt { color: var(--muted); }
.verify-result dd { margin: 0; font-weight: 600; }
.qr { width: 132px; height: 132px; }
.qr svg { width: 100%; height: 100%; display: block; }

/* Sign-in */
body.bare { display: grid; place-items: center; min-height: 100vh; padding: 20px; background: linear-gradient(160deg, var(--primary-dark), var(--primary)); }
.auth-card { width: 100%; max-width: 410px; background: var(--card); border-radius: 14px; padding: 32px 30px; box-shadow: 0 18px 50px rgba(0, 0, 0, .25); }
.auth-card h1 { margin-bottom: .15em; font-size: 1.4rem; }
.auth-links { display: flex; justify-content: space-between; gap: 10px; margin-top: 16px; font-size: .9rem; flex-wrap: wrap; }
.auth-links .lang { padding: 0; }

/* Certificate */
body.cert-page { background: #e9edef; padding: 24px; }
.cert-tools { display: flex; justify-content: center; gap: 8px; margin-block-end: 16px; }
.certificate { --accent: #0f4c5c; width: min(1040px, 100%); aspect-ratio: 297 / 210; margin: 0 auto; background: #fff; padding: 2.2%; box-shadow: 0 8px 30px rgba(0, 0, 0, .15); -webkit-print-color-adjust: exact; print-color-adjust: exact; }
.cert-inner { height: 100%; border: 3px solid var(--accent); outline: 1px solid var(--accent); outline-offset: -9px; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 3% 8%; }
.cert-org { color: var(--accent); font-weight: 700; font-size: 1.15rem; }
.certificate h1 { font-size: 2.5rem; color: var(--accent); margin-bottom: .55em; }
.cert-body { font-size: 1.2rem; line-height: 2.2; max-width: 780px; }
.cert-name { display: block; font-size: 1.85rem; color: var(--ink); }
.cert-foot { display: flex; justify-content: space-between; align-items: flex-end; width: 100%; margin-top: auto; padding-top: 12px; }
.cert-foot > div:not(.qr) { display: flex; flex-direction: column; min-width: 180px; }
.cert-foot small { color: var(--muted); }
.cert-foot .qr { width: 104px; height: 104px; }

/* Home page */
.hero-text { flex: 1; min-width: 0; }
.hero-art { width: min(38%, 400px); height: auto; flex: none; }
.hero-actions { display: flex; gap: 10px; margin-top: 20px; flex-wrap: wrap; }
.btn-accent { background: var(--accent); border-color: var(--accent); color: #16262e; }
.btn-accent:hover { background: #f6c76d; border-color: #f6c76d; }
.btn-ghost { background: rgba(255, 255, 255, .12); border-color: rgba(255, 255, 255, .25); color: #fff; }
.btn-ghost:hover { background: rgba(255, 255, 255, .2); border-color: rgba(255, 255, 255, .4); }
.hero-stats { display: flex; gap: 32px; margin-top: 24px; flex-wrap: wrap; }
.hero-stats b { display: block; font-size: 1.7rem; line-height: 1.2; color: var(--accent); }
.hero-stats span { font-size: .88rem; color: #d9e8eb; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; margin-block-end: 18px; }
.chip { display: inline-flex; align-items: center; gap: 6px; padding: 5px 14px; border-radius: 30px; background: var(--card); border: 1px solid var(--line); color: var(--ink); font-size: .9rem; transition: background-color .15s, border-color .15s, transform .15s; }
.chip:hover { text-decoration: none; transform: translateY(-1px); border-color: var(--line-strong); }
.chip.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 16px; margin-top: 28px; }
.feature { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.feature h3 { margin: 8px 0 4px; }
.feature p { margin: 0; font-size: .93rem; }
.feature-emoji { display: inline-grid; place-items: center; width: 46px; height: 46px; border-radius: 13px; background: var(--tint); color: var(--link); }
.empty-emoji { color: var(--muted); }
html:not([data-theme=dark]) .t-sun, [data-theme=dark] .t-moon { display: none; }
body { transition: background-color .25s, color .25s; }

/* Footer */
.site-footer { margin-top: auto; background: var(--card); border-block-start: 1px solid var(--line); }
.foot-inner { max-width: 1240px; margin-inline: auto; padding: 26px; }
.foot-grid { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; margin-block-end: 18px; }
.foot-share { display: flex; align-items: center; gap: 14px; }
.foot-share-text p { margin: 0 0 8px; font-size: .9rem; }
.foot-qr { width: 112px; height: 112px; flex: none; background: #fff; padding: 7px; border-radius: 14px; border: 1px solid var(--line); }
.foot-qr svg, .share-qr svg { display: block; width: 100%; height: 100%; }
.foot-sites p { margin: 0 0 8px; font-size: .9rem; }
.site-links { display: flex; flex-wrap: wrap; gap: 10px; }
.site-link { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 16px; padding-block: 7px; padding-inline: 7px 14px; transition: border-color .15s, transform .15s; }
.site-link:hover { text-decoration: none; transform: translateY(-2px); border-color: var(--c); }
.site-link img { border-radius: 11px; flex: none; }
.site-link span { display: flex; flex-direction: column; line-height: 1.35; }
.site-link b { color: var(--c); font-size: .98rem; }
[data-theme=dark] .site-link b { filter: brightness(1.35); }
.foot-note { border-block-start: 1px dashed var(--line); padding-block-start: 14px; margin: 0 0 4px; }
.foot-legal { margin: 0; font-size: .86rem; }
.credit-link { color: inherit; text-decoration: underline; text-underline-offset: 3px; }
.credit-link:hover { color: var(--link); }
.dlg { border: 0; padding: 0; border-radius: 16px; width: min(420px, calc(100vw - 32px)); background: var(--card); color: var(--ink); box-shadow: 0 24px 60px rgba(0, 0, 0, .35); }
.dlg::backdrop { background: rgba(10, 15, 25, .5); backdrop-filter: blur(2px); }
.dlg[open] { animation: pop-in .25s ease-out; }
.dlg-body { position: relative; padding: 24px 22px; text-align: center; }
.dlg-close { position: absolute; inset-block-start: 10px; inset-inline-end: 10px; }
.dlg h2 { margin: 4px 0 8px; padding-inline: 34px; }
.share-qr { width: 200px; height: 200px; margin: 8px auto 4px; background: #fff; padding: 10px; border-radius: 16px; border: 1px solid var(--line); }
.small-note { font-size: .86rem; margin: 0; }
.share-link { display: flex; gap: 8px; margin: 12px 0 14px; }
.share-link input { flex: 1; min-width: 0; }
.share-apps { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.share-app { padding: 6px 15px; border-radius: 999px; background: var(--c); color: #fff; font-weight: 600; font-size: .9rem; }
.share-app:hover { filter: brightness(1.1); text-decoration: none; }

/* Emoji buttons */
.btn .bi { font-size: 1.02em; line-height: 1; display: inline-flex; }
.btn-sm .bt:not(.keep) { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.btn-sm:has(.bt:not(.keep)) { min-width: 34px; padding-inline: 8px; }
.btn-danger-solid { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-danger-solid:hover { background: #952b25; border-color: #952b25; }
.btn-site { background: var(--tint); border-color: transparent; color: var(--link); }

/* Dialogs */
.lms-swal { font-family: AppFont, "Segoe UI", Tahoma, sans-serif; border-radius: 14px; background: var(--card); }
.lms-swal .swal2-title { font-size: 1.25rem; color: var(--ink); }
.lms-swal .swal2-html-container { font-size: 1rem; color: var(--muted); }
.lms-swal-actions { gap: 8px; }

/* Scrollbars */
@supports not selector(::-webkit-scrollbar) {
  html { scrollbar-color: #a9bdb1 var(--bg); scrollbar-width: thin; }
  .sidebar { scrollbar-width: thin; }
}
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #a9bdb1; border-radius: 10px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { border-color: var(--card); }
.player-nav::-webkit-scrollbar-track, .table-wrap::-webkit-scrollbar-track { background: transparent; }
.player-nav::-webkit-scrollbar-thumb, .table-wrap::-webkit-scrollbar-thumb { border-color: var(--card); }

/* Motion */
@keyframes fade-in { from { opacity: 0; } }
@keyframes rise-in { from { opacity: 0; transform: translateY(12px); } }
@keyframes pop-in { from { opacity: 0; transform: scale(.96) translateY(8px); } }
@keyframes bar-grow { from { width: 0; } }
@keyframes slide-down { from { opacity: 0; transform: translateY(-8px); } }
@keyframes pulse-urgent { 50% { transform: scale(1.05); } }
.content { animation: fade-in .3s ease-out backwards; }
.page-head, .hero, .course-hero { animation: rise-in .4s ease-out backwards; }
.panel, .player-nav { animation: rise-in .4s ease-out .05s backwards; }
.stat, .course-card { animation: rise-in .45s cubic-bezier(.2, .7, .3, 1) backwards; }
:is(.stat, .course-card):nth-child(2) { animation-delay: .05s; }
:is(.stat, .course-card):nth-child(3) { animation-delay: .1s; }
:is(.stat, .course-card):nth-child(4) { animation-delay: .15s; }
:is(.stat, .course-card):nth-child(5) { animation-delay: .2s; }
:is(.stat, .course-card):nth-child(n+6) { animation-delay: .25s; }
.auth-card { animation: pop-in .4s cubic-bezier(.2, .7, .3, 1) backwards; }
.alert { animation: slide-down .3s ease-out backwards; }
.progress i { animation: bar-grow .8s cubic-bezier(.2, .7, .3, 1) .15s backwards; }
details.outline[open] ul { animation: slide-down .22s ease-out; }
.timer.urgent { animation: pulse-urgent 1s ease-in-out infinite; }
.btn { transition: background-color .15s, border-color .15s, box-shadow .15s, transform .12s; }
.btn:hover { transform: translateY(-1px); box-shadow: 0 3px 10px rgba(22, 38, 46, .1); }
.btn:active { transform: translateY(0) scale(.97); box-shadow: none; }
.stat { transition: transform .15s, box-shadow .15s; }
.stat:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(22, 38, 46, .09); }
.sidebar nav a { transition: background-color .15s, padding-inline-start .15s; }
.sidebar nav a:hover { padding-inline-start: 14px; }
.option { transition: background-color .15s, border-color .15s; }
.option:has(input:checked) { background: var(--tint); border-color: var(--primary); }
.lesson-list li > a { transition: background-color .15s; }
.builder-table tr { transition: background-color .15s; }
.builder-table tr:hover { background: var(--hover); }
.icon-btn { transition: background-color .15s; }

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

@media (max-width: 900px) {
  .foot-grid { flex-direction: column; text-align: center; }
  .foot-share { flex-direction: column; }
  .foot-share .actions, .site-links { justify-content: center; }
  .site-footer { text-align: center; }
  .site-link { text-align: start; }
  .foot-inner { padding: 22px 16px; }
  .btn-site .bt { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
  .sidebar { position: fixed; inset-inline-start: 0; z-index: 20; transform: translateX(100%); transition: transform .2s; box-shadow: 0 0 40px rgba(0, 0, 0, .3); }
  [dir=ltr] .sidebar { transform: translateX(-100%); }
  .sidebar.open, [dir=ltr] .sidebar.open { transform: none; }
  .menu-btn { display: inline-grid; }
  .user-chip span { display: none; }
  .two-col, .player { grid-template-columns: minmax(0, 1fr); }
  .player-nav { position: static; max-height: none; }
  .content { padding: 16px 16px 40px; }
  .topbar { padding: 0 12px; }
  .public-top { padding: 10px 16px; }
  .hero { padding: 28px 22px; flex-direction: column; align-items: stretch; }
  .hero-art { display: none; }
  .hero h1 { font-size: 1.6rem; }
  .inline { flex-wrap: wrap; }
  .certificate h1 { font-size: 1.5rem; }
  .cert-body { font-size: .9rem; line-height: 1.8; }
  .cert-name { font-size: 1.15rem; }
  .cert-foot .qr { width: 64px; height: 64px; }
  .cert-foot > div:not(.qr) { min-width: 0; font-size: .75rem; }
}

@media print {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  @page { size: A4 landscape; margin: 0; }
  .no-print, .sidebar, .topbar, .public-top { display: none !important; }
  body, body.cert-page { background: #fff; padding: 0; }
  .certificate { width: 100vw; height: 100vh; aspect-ratio: auto; box-shadow: none; }
  .panel, .stat { box-shadow: none; }
}

/* Lesson content */
:root { --purple: #5b4fb5; --purple-bg: #eeecfa; }
[data-theme=dark] { --purple: #b7afee; --purple-bg: #2a2748; }
.tone-green { --t: var(--success); --tb: var(--success-bg); }
.tone-blue { --t: var(--info); --tb: var(--info-bg); }
.tone-amber { --t: var(--warning); --tb: var(--warning-bg); }
.tone-red { --t: var(--danger); --tb: var(--danger-bg); }
.tone-purple { --t: var(--purple); --tb: var(--purple-bg); }
.tone-ic { display: inline-grid; place-items: center; width: 42px; height: 42px; flex: none; border-radius: 50%; background: var(--tb); color: var(--t); }
.callout-ic { display: flex; gap: 12px; align-items: flex-start; background: var(--tb); border: 1px solid color-mix(in srgb, var(--t) 24%, transparent); border-radius: 16px; padding: 14px 16px; margin: 0 0 1em; }
.callout-ic .tone-ic { width: 36px; height: 36px; background: var(--card); }
.callout-label { display: block; color: var(--t); line-height: 1.5; }
.tone-apply { --t: #fff; --tb: var(--primary); color: #fff; border: 0; background: linear-gradient(135deg, var(--primary-dark), var(--primary)); }
.tone-apply .tone-ic { background: var(--accent); color: #16262e; }
.tone-apply .callout-label { color: var(--accent); }
.panel-title { display: flex; align-items: center; gap: 10px; font-size: 1.15rem; margin-bottom: .8em; }
.panel-title .tone-ic { width: 34px; height: 34px; }

.lesson-body { font-size: calc(1.04rem * var(--zoom, 1)); line-height: 2; }
.lesson-block { background: var(--card); border: 1px solid var(--line); border-radius: 22px; padding: 24px 28px; margin-block-end: 18px; box-shadow: var(--shadow); }
.lesson-block > :last-child { margin-bottom: 0; }
.lesson-intro { font-size: 1.05em; border-inline-start: 4px solid var(--accent); }
.lesson-body .block-title { display: flex; align-items: center; gap: 12px; margin: 0 0 .8em; font-size: 1.28em; color: var(--ink); }
.lesson-body h3 { font-size: 1.08em; margin: 1.2em 0 .4em; padding-inline-start: 10px; border-inline-start: 3px solid var(--accent); }
.lesson-body ul { list-style: none; padding: 0; }
.lesson-body ul li, .lesson-body ol li { position: relative; padding-inline-start: 34px; margin-block-end: .5em; }
.lesson-body ul li::before { content: ""; position: absolute; inset-inline-start: 2px; top: .42em; width: 20px; height: 20px; border-radius: 50%; background: var(--success-bg); }
.lesson-body ul li::after { content: ""; position: absolute; inset-inline-start: 6px; top: calc(.42em + 4px); width: 12px; height: 12px; background: var(--success);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center / contain no-repeat; }
.lesson-block:has(.block-title .tone-red) ul li::before { background: var(--danger-bg); }
.lesson-block:has(.block-title .tone-red) ul li::after { background: var(--danger); -webkit-mask-image: none; mask-image: none; width: 6px; height: 6px; inset-inline-start: 9px; top: calc(.42em + 7px); border-radius: 50%; }
.lesson-body ol { list-style: none; padding: 0; counter-reset: step; }
.lesson-body ol li { counter-increment: step; }
.lesson-body ol li::before { content: counter(step); position: absolute; inset-inline-start: 0; top: .3em; width: 24px; height: 24px; display: grid; place-items: center; border-radius: 50%; background: var(--primary); color: #fff; font-size: .78em; font-weight: 700; line-height: 1; }
.lesson-body .table-wrap { border-radius: 14px; border: 1px solid var(--line); margin-block-end: 1em; }
.lesson-body th { background: var(--primary); color: #fff; font-size: .9em; padding: 11px 14px; }
.lesson-body td { padding: 11px 14px; font-size: .95em; }
.lesson-body tbody tr:nth-child(even) { background: var(--hover); }
.lesson-body tbody td:first-child { font-weight: 600; }
.compare { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-block-end: 1em; }
.cmp { border-radius: 16px; padding: 12px 16px; border: 1px solid; }
.cmp p { margin: 0; }
.cmp small { display: inline-flex; align-items: center; gap: 4px; font-weight: 600; }
.cmp-bad { background: var(--danger-bg); border-color: color-mix(in srgb, var(--danger) 26%, transparent); }
.cmp-bad small { color: var(--danger); }
.cmp-good { background: var(--success-bg); border-color: color-mix(in srgb, var(--success) 26%, transparent); }
.cmp-good small { color: var(--success); }

/* Lesson player */
.focus-content { flex: 1; display: flex; flex-direction: column; width: 100%; }
.lesson-bar { display: flex; align-items: center; gap: 10px; height: 62px; padding: 0 18px; background: var(--card); border-block-end: 1px solid var(--line); position: sticky; top: 0; z-index: 8; }
.outline-btn { display: none; }
.lb-title { display: flex; flex-direction: column; min-width: 0; line-height: 1.4; }
.lb-title strong, .lb-title span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.lb-title strong { font-size: 1.04rem; }
.lb-title span { color: var(--muted); font-size: .82rem; }
.tool-group { display: flex; align-items: center; gap: 2px; padding: 3px 6px; border: 1px solid var(--line); border-radius: 12px; flex: none; }
.tool-group button { display: inline-flex; align-items: center; gap: 4px; height: 30px; min-width: 32px; justify-content: center; padding: 0 7px; border: 0; border-radius: 8px; background: none; color: var(--ink); font: inherit; font-size: .86rem; font-weight: 600; cursor: pointer; transition: background-color .15s; }
.tool-group button:hover { background: var(--tint); color: var(--link); }
.tool-group output { min-width: 44px; text-align: center; font-size: .82rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.player { display: grid; grid-template-columns: 330px minmax(0, 1fr); gap: 0; align-items: start; flex: 1; }
.focus .player-nav { position: sticky; top: 62px; height: calc(100vh - 62px); max-height: none; border: 0; border-inline-end: 1px solid var(--line); border-radius: 0; padding: 0; animation: none; }
.pn-head { padding: 18px 18px 12px; border-block-end: 1px solid var(--line); }
.pn-head .back { display: block; font-size: 1.05rem; line-height: 1.5; margin-block-end: 10px; }
.pn-progress { display: flex; justify-content: space-between; align-items: center; font-size: .86rem; line-height: 1.3; }
.pn-progress b { color: var(--link); }
.focus details.outline { border-block-end: 1px solid var(--line); }
.focus details.outline summary { padding: 11px 18px; font-size: .9rem; }
.focus details.outline ul { padding: 0; }
.focus .lesson-list li > a, .focus .lesson-list li > .locked { gap: 10px; padding: 9px 18px; border-radius: 0; border-inline-start: 3px solid transparent; }
.focus .lesson-list li.current > a { border-inline-start-color: var(--primary); }
.ln-state { display: inline-grid; place-items: center; width: 24px; height: 24px; flex: none; border-radius: 50%; background: var(--chip); color: var(--muted); font-size: .76rem; font-weight: 700; line-height: 1; }
.lesson-list li.done .ln-state { background: var(--success-bg); }
.lesson-list li.current .ln-state { background: var(--primary); color: #fff; }
.lesson-list li.current.done .ln-state .ic { color: #fff; }
.ln-title { flex: 1; min-width: 0; line-height: 1.55; }
.ln-type { color: var(--muted); display: inline-flex; }
.lesson-list li.done .ln-type .ic { color: var(--muted); }
.lesson-area { min-width: 0; display: flex; flex-direction: column; min-height: calc(100vh - 62px); padding: 22px 28px 0; }
.focus .lesson { max-width: 900px; width: 100%; margin-inline: auto; flex: 1; }
.lesson-hero { display: flex; gap: 16px; align-items: center; color: #fff; background: linear-gradient(135deg, #0e2917, #1e5631 60%, #2f7d4a); border-radius: 22px; padding: 24px 28px; margin-block-end: 18px; }
.lesson-hero h1 { font-size: 1.6rem; margin: 0 0 .3em; }
.lesson-hero .kicker { color: #cfe3d6; margin: 0; }
.lesson-hero .meta { color: #dcebe2; }
.lh-ic { display: inline-grid; place-items: center; width: 58px; height: 58px; flex: none; border-radius: 18px; background: rgba(255, 255, 255, .14); color: var(--accent); }
.lh-done { color: var(--accent); font-weight: 600; }
.focus .media { border-radius: 18px; margin-block-end: 18px; }
.focus .ratio iframe { border-radius: 18px; }
.lesson-dock { position: sticky; bottom: 0; z-index: 6; display: flex; align-items: center; gap: 22px; margin-inline: -28px; margin-block-start: 8px; padding: 12px 28px; background: var(--card); border-block-start: 1px solid var(--line); }
.lesson-dock form { margin: 0; }
.dock-read { flex: 1; min-width: 0; max-width: 520px; margin-inline: auto; }
.dock-read .progress { margin: 5px 0 0; height: 6px; }
.dock-read .progress i { animation: none; transition: width .12s linear; }

/* Course outline */
details.outline summary::after { content: ""; flex: none; width: 8px; height: 8px; border-bottom: 2px solid var(--muted); border-right: 2px solid var(--muted); transform: rotate(45deg); transition: transform .2s; margin-inline: 4px; }
details.outline[open] summary::after { content: ""; transform: rotate(-135deg); }
.unit-no { display: inline-grid; place-items: center; width: 32px; height: 32px; flex: none; border-radius: 11px; background: var(--tint); color: var(--link); font-size: .92rem; }
details.unit summary { padding: 13px 2px; font-size: 1rem; }
details.unit[open] .unit-no { background: var(--primary); color: #fff; }
.unit-meta { display: inline-flex; align-items: center; gap: 12px; white-space: nowrap; font-weight: 400; }
.unit-meta span { display: inline-flex; align-items: center; gap: 4px; flex: none !important; }
.type-ic { display: inline-grid; place-items: center; width: 34px; height: 34px; flex: none !important; border-radius: 11px; background: var(--info-bg); color: var(--info); }
.type-video { background: var(--danger-bg); color: var(--danger); }
.type-quiz { background: var(--warning-bg); color: var(--warning); }
.type-file { background: var(--purple-bg); color: var(--purple); }
.type-link { background: var(--tint); color: var(--link); }
.lesson-list.static li { gap: 12px; padding: 8px 6px; border-radius: 12px; transition: background-color .15s; }
.lesson-list.static li:hover { background: var(--hover); }
.lesson-list.static li.done .type-ic { background: var(--success-bg); color: var(--success); }
.type-name { padding: 0 9px; border-radius: 20px; background: var(--chip); }

/* Recent activity */
.feed-title { font-size: 1.3rem; margin: 28px 0 12px; }
.feed { list-style: none; margin: 0; padding: 0; overflow: hidden; }
.feed a { display: flex; align-items: center; gap: 14px; padding: 13px 20px; color: var(--ink); transition: background-color .15s; }
.feed a:hover { background: var(--hover); text-decoration: none; }
.feed li + li { border-block-start: 1px solid var(--line); }
.feed .tone-ic { width: 44px; height: 44px; }
.feed-text { flex: 1; min-width: 0; display: flex; flex-direction: column; line-height: 1.6; }
.feed-time { flex: none; white-space: nowrap; }

@media (max-width: 900px) {
  .outline-btn { display: inline-grid; }
  .lesson-bar { padding: 0 8px; gap: 4px; }
  .lb-title span, .tool-group .lb-wide, .lb-exit span { display: none; }
  .lb-exit { padding-inline: 9px; }
  .tool-group { padding: 2px; }
  .player { grid-template-columns: minmax(0, 1fr); }
  .focus .player-nav { position: fixed; top: 62px; inset-inline-start: 0; bottom: 0; height: auto; width: min(330px, 86vw); z-index: 7; background: var(--card); transform: translateX(100%); transition: transform .22s; box-shadow: 0 0 40px rgba(0, 0, 0, .3); overflow-y: auto; visibility: hidden; }
  [dir=ltr] .focus .player-nav { transform: translateX(-100%); }
  .focus .player-nav.open, [dir=ltr] .focus .player-nav.open { transform: none; visibility: visible; }
  .lesson-area { padding: 14px 14px 0; }
  .lesson-hero { padding: 18px; gap: 12px; align-items: flex-start; border-radius: 18px; }
  .lesson-hero h1 { font-size: 1.28rem; }
  .lh-ic { width: 44px; height: 44px; border-radius: 14px; }
  .lesson-block { padding: 18px 16px; border-radius: 18px; }
  .compare { grid-template-columns: minmax(0, 1fr); }
  .lesson-dock { margin-inline: -14px; padding: 10px 14px; gap: 10px; }
  .dock-prev .bt { display: none; }
  .dock-prev { padding-inline: 12px; }
  .dock-read .pn-progress span { display: none; }
  .lesson-dock .btn-primary { font-size: .86rem; padding-inline: 14px; }
  .unit-meta .type-name { display: none; }
  details.unit summary { flex-wrap: wrap; }
  details.unit summary > span { flex: 1 1 60%; }
  details.unit summary .unit-meta { order: 3; flex-basis: 100%; padding-inline-start: 42px; }
  .feed a { padding: 12px 14px; gap: 10px; }
}

@media print {
  body.focus { page: lesson; }
  .focus .player { display: block; }
  .focus .lesson-area { padding: 0; min-height: 0; }
  .focus .lesson { max-width: none; }
  .lesson-block { box-shadow: none; break-inside: avoid; border-radius: 10px; }
  .lesson-hero, .tone-apply, .lesson-body th { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
}
@page lesson { size: A4 portrait; margin: 14mm; }