/* Monks by Monastic student area v2 (MBM4-learn-dashboard-1018, Om T303). Colours = MBM1 brand kit v2 tokens only; fonts = Geologica
   (display) + Mukta (body), self-hosted under /learn/fonts (SIL OFL 1.1, see OFL-*.txt). Motion sits behind prefers-reduced-motion. */
@font-face { font-family: 'Geologica'; src: url('fonts/Geologica-VF.woff2') format('woff2'); font-weight: 100 900; font-style: normal; font-display: swap; }
@font-face { font-family: 'Mukta'; src: url('fonts/Mukta-Latin-Regular.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Mukta'; src: url('fonts/Mukta-Latin-SemiBold.woff2') format('woff2'); font-weight: 600; font-display: swap; }
@font-face { font-family: 'Mukta'; src: url('fonts/Mukta-Latin-Bold.woff2') format('woff2'); font-weight: 700; font-display: swap; }

:root {
  --sky: #9BD3F5; --blue: #1A66C9; --lemon: #FFE94A; --orange: #FF6B1A; --peach: #FFC4A0; --ink: #111418; --white: #FFFFFF;
  --sky-50: #EEF8FE; --sky-100: #D6EEFC; --sky-300: #BDE3FA;
  --blue-50: #E9F1FB; --blue-700: #1552A3; --blue-900: #0E3A75;
  --lemon-50: #FFFBE0; --lemon-200: #FFF29A;
  --orange-50: #FFF0E7; --orange-700: #B8470A;
  --peach-50: #FFF4EC; --peach-200: #FFDCC6;
  --ink-70: #454B54; --ink-40: #8A919B; --ink-10: #E4E7EB;
  --display: 'Geologica', 'Mukta', sans-serif;
  --body: 'Mukta', 'Geologica', sans-serif;
  --r: 8px;
  --ease: cubic-bezier(.2, .7, .2, 1);
  --wrap: 1180px;
  color-scheme: light;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--white); color: var(--ink); font: 400 17px/1.55 var(--body); min-height: 100vh; display: flex; flex-direction: column; overflow-x: hidden; }
img, svg { display: block; max-width: 100%; }
a { color: var(--blue); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--blue-700); }
button { font: inherit; color: inherit; }
h1, h2, h3 { font-family: var(--display); font-weight: 650; letter-spacing: -0.01em; line-height: 1.15; margin: 0; }
p { margin: 0; }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 2px; border-radius: 4px; }
.on-blue :focus-visible { outline-color: var(--lemon); }
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.app { flex: 1; }

/* ---------- top bar ---------- */
.tb { background: var(--white); border-bottom: 1px solid var(--ink-10); position: sticky; top: 0; z-index: 20; }
.tb-in { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; height: 68px; display: flex; align-items: center; gap: 16px; }
.tb .logo { display: block; flex: none; border-radius: 4px; }
.tb .logo img { width: 188px; height: auto; }
.tb nav { margin-left: auto; display: flex; align-items: center; gap: 6px; }
.tb nav a.nl { color: var(--ink); text-decoration: none; font-weight: 600; padding: 8px 12px; min-height: 40px; display: inline-flex; align-items: center; border-radius: var(--r); transition: background-color .15s; }
.tb nav a.nl:hover { background: var(--sky-50); color: var(--ink); }
.tb nav a.nl[aria-current="page"] { color: var(--blue); background: var(--blue-50); }
.acct { position: relative; }
.acct > button { display: flex; align-items: center; gap: 10px; background: none; border: 1px solid transparent; border-radius: var(--r); padding: 4px 8px 4px 4px; cursor: pointer; }
.acct > button:hover { border-color: var(--ink-10); }
.av { width: 36px; height: 36px; border-radius: 50%; background: var(--sky); color: var(--ink); display: grid; place-items: center; font: 650 14px/1 var(--display); flex: none; }
.acct .who-t { text-align: left; line-height: 1.2; }
.acct .who-t b { display: block; font-weight: 600; font-size: 15px; }
.acct .who-t span { font-size: 13px; color: var(--ink-70); }
.menu { position: absolute; right: 0; top: calc(100% + 8px); background: var(--white); border: 1px solid var(--ink-10); border-radius: var(--r); min-width: 240px; padding: 8px; display: none; z-index: 30; }
.menu.open { display: block; animation: drop .18s var(--ease); }
.menu p { padding: 8px 10px 10px; font-size: 14px; color: var(--ink-70); border-bottom: 1px solid var(--ink-10); margin-bottom: 6px; overflow-wrap: anywhere; }
.menu p b { display: block; color: var(--ink); font-size: 15px; }
.menu a, .menu button { display: block; width: 100%; text-align: left; padding: 9px 10px; border-radius: 6px; border: 0; background: none; color: var(--ink); text-decoration: none; cursor: pointer; font-size: 15px; }
.menu a:hover, .menu button:hover { background: var(--sky-50); color: var(--ink); }

/* ---------- buttons, fields ---------- */
.btn { --bg: var(--blue); --fg: var(--white); --bd: var(--blue); display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 46px; padding: 10px 20px; border-radius: var(--r); border: 1px solid var(--bd); background: var(--bg); color: var(--fg); font: 600 16px/1.2 var(--body); text-decoration: none; cursor: pointer; transition: background-color .15s, border-color .15s, transform .12s var(--ease); white-space: nowrap; }
.btn:hover { --bg: var(--blue-700); --bd: var(--blue-700); color: var(--fg); }
.btn:active { transform: scale(.98); }
.btn[disabled] { opacity: .55; cursor: default; transform: none; }
.btn.cta { --bg: var(--orange); --fg: var(--ink); --bd: var(--orange); }
.btn.cta:hover { --bg: var(--orange); --bd: var(--ink); }
.btn.line { --bg: var(--white); --fg: var(--blue); --bd: var(--blue); }
.btn.line:hover { --bg: var(--blue-50); --bd: var(--blue); color: var(--blue); }
.btn.ghost { --bg: transparent; --fg: var(--ink); --bd: transparent; }
.btn.ghost:hover { --bg: var(--sky-50); --bd: transparent; color: var(--ink); }
.btn.white { --bg: var(--white); --fg: var(--ink); --bd: var(--ink-10); }
.btn.white:hover { --bg: var(--sky-50); --bd: var(--blue); color: var(--ink); }
.btn.sm { min-height: 40px; padding: 8px 14px; font-size: 15px; }
.btn.wide { width: 100%; }
.btn svg { width: 18px; height: 18px; flex: none; }
.btn .gimg { width: 20px; height: 20px; }
.ico { width: 18px; height: 18px; flex: none; }
.field { display: block; margin: 0 0 14px; }
.field > span { display: block; font-weight: 600; font-size: 15px; margin-bottom: 6px; }
.field input, .field textarea { width: 100%; font: 400 17px/1.4 var(--body); color: var(--ink); background: var(--white); border: 1px solid var(--ink-40); border-radius: var(--r); padding: 11px 14px; transition: border-color .15s, box-shadow .15s; }
.field textarea { min-height: 170px; resize: vertical; font-size: 15px; line-height: 1.5; }
.field input::placeholder, .field textarea::placeholder { color: var(--ink-70); opacity: 1; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 2px var(--blue); }
.field input.req, .field textarea.req { border-color: var(--orange-700); box-shadow: 0 0 0 3px var(--orange-50); }
.field .err { display: block; color: var(--orange-700); font-size: 14px; font-weight: 600; margin-top: 6px; }
.field .hint { display: block; color: var(--ink-70); font-size: 14px; margin-top: 6px; }
.code-in { font-family: var(--display) !important; font-size: 28px !important; letter-spacing: .32em; text-align: center; font-variant-numeric: tabular-nums; padding: 12px 8px 12px calc(8px + .32em) !important; }
.note { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; line-height: 1.45; padding: 12px 14px; border-radius: var(--r); margin-top: 14px; }
.note:empty { display: none; }
.note svg { width: 18px; height: 18px; flex: none; margin-top: 2px; }
.note.bad { background: var(--orange-50); color: var(--orange-700); font-weight: 600; }
.note.info { background: var(--sky-50); color: var(--ink); }
.note.ok { background: var(--blue-50); color: var(--blue-700); font-weight: 600; }
.chip { display: inline-flex; align-items: center; gap: 6px; font: 600 14px/1 var(--body); padding: 6px 9px; border-radius: 6px; white-space: nowrap; }
.chip svg { width: 13px; height: 13px; }
.chip.todo { background: var(--ink-10); color: var(--ink-70); }
.chip.doing { background: var(--blue-50); color: var(--blue-700); }
.chip.done { background: var(--lemon); color: var(--ink); }
.chip.om { background: var(--lemon-200); color: var(--ink); }
.chip.task { background: var(--peach-200); color: var(--ink); }

/* ---------- progress ---------- */
.bar { height: 8px; background: var(--ink-10); border-radius: 4px; overflow: hidden; }
.bar i { display: block; height: 100%; width: var(--p, 0%); background: var(--blue); border-radius: 4px; transition: width .7s var(--ease); }
.bar.full i { background: var(--blue-700); }
.on-blue .bar { background: var(--blue-700); }
.on-blue .bar i { background: var(--lemon); }
.anim .bar i { animation: barin .9s var(--ease) both; }
@keyframes barin { from { width: 0; } }
.ring { position: relative; width: 148px; height: 148px; flex: none; }
.ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring .trk { fill: none; stroke: var(--blue-700); stroke-width: 12; }
.ring .val { fill: none; stroke: var(--lemon); stroke-width: 12; stroke-linecap: round; transition: stroke-dashoffset 1s var(--ease); }
.ring .num { position: absolute; inset: 0; display: grid; place-content: center; text-align: center; color: var(--white); }
.ring .num b { font: 700 38px/1 var(--display); letter-spacing: -0.02em; }
.ring .num b small { font-size: 20px; font-weight: 600; }
.ring .num > span { font-size: 14px; margin-top: 4px; }
.ring.sm { width: 64px; height: 64px; }
.ring.sm .trk { stroke: var(--ink-10); stroke-width: 9; }
.ring.sm .val { stroke: var(--blue); stroke-width: 9; }
.ring.sm .num { color: var(--ink); }
.ring.sm .num b { font-size: 16px; }

/* ---------- skeleton (boot + loading) ---------- */
.sk { background: var(--sky-50); border-radius: var(--r); position: relative; overflow: hidden; }
.sk::after { content: ''; position: absolute; inset: 0; transform: translateX(-100%); background: linear-gradient(90deg, transparent, var(--sky-100), transparent); animation: shimmer 1.4s infinite; }
@keyframes shimmer { to { transform: translateX(100%); } }
.boot-hero { background: var(--blue); padding: 44px 0 110px; }
.boot-hero .sk { background: var(--blue-700); }
.boot-hero .sk::after { background: linear-gradient(90deg, transparent, var(--blue-900), transparent); }
.boot-row { display: flex; justify-content: space-between; gap: 24px; align-items: center; }
.boot-l { flex: 1; display: grid; gap: 14px; max-width: 520px; }
.boot-card { margin-top: -72px; height: 168px; background: var(--white); border: 1px solid var(--ink-10); border-radius: var(--r); padding: 20px; display: flex; gap: 20px; }
.boot-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 40px 0 64px; }
.boot-grid .sk { height: 190px; }

/* ---------- sign-in + refusal (split screen) ---------- */
.door { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); min-height: 100vh; }
.door-l { background: var(--blue); color: var(--white); padding: 56px clamp(24px, 5vw, 72px); display: flex; flex-direction: column; gap: 28px; }
.door-l .lg { width: 210px; }
.door-l h1 { font-size: clamp(30px, 3.4vw, 44px); font-weight: 650; max-width: 15ch; }
.door-l h1 em { font-style: normal; color: var(--lemon); }
.door-l .lede { font-size: 18px; max-width: 46ch; }
.facts { font-size: 18px; max-width: 46ch; }
.facts b { color: var(--lemon); font: 700 20px/1.2 var(--display); }
.outline { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 0 28px; border-top: 1px solid var(--blue-700); }
.outline li { display: flex; gap: 12px; align-items: baseline; padding: 10px 0; border-bottom: 1px solid var(--blue-700); font-size: 15px; }
.outline li .ow { flex: none; width: 58px; font-weight: 600; }
.outline li .tt { flex: 1; }
.outline li .n { flex: none; font-size: 14px; }
.door-l .by { margin-top: auto; font-size: 15px; }
.door-r { position: relative; display: flex; align-items: center; justify-content: center; padding: 72px 24px 48px; background: var(--white); }
.door-top { position: absolute; top: 18px; right: 24px; display: inline-flex; align-items: center; gap: 4px; min-height: 40px; color: var(--ink); font-weight: 600; text-decoration: none; }
.door-top svg { width: 16px; height: 16px; }
.door-top:hover { color: var(--blue); }
body.door-mode .tb { display: none; }
.door-card { width: 100%; max-width: 420px; }
.door-card h2 { font-size: 30px; margin-bottom: 8px; }
.door-card .sub { color: var(--ink-70); margin-bottom: 26px; }
.or { display: flex; align-items: center; gap: 12px; color: var(--ink-70); font-size: 14px; margin: 20px 0; }
.or::before, .or::after { content: ''; flex: 1; height: 1px; background: var(--ink-10); }
.door-card .fine { margin-top: 26px; padding-top: 18px; border-top: 1px solid var(--ink-10); font-size: 15px; color: var(--ink-70); }
.row-btns { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 12px; }
.sent { background: var(--sky-50); border-radius: var(--r); padding: 14px 16px; margin-bottom: 16px; font-size: 15px; }
.sent b { overflow-wrap: anywhere; }
.door-out { display: none; }

/* ---------- course home ---------- */
.hero { background: var(--blue); color: var(--white); padding: 44px 0 112px; }
.hero-in { display: flex; justify-content: space-between; align-items: center; gap: 32px; }
.hero h1 { font-size: clamp(30px, 3.6vw, 46px); }
.hero .meta { margin-top: 10px; font-size: 18px; }
.hero .meta b { font-weight: 600; }
.hero .meta .dot { margin: 0 8px; }
.hero .prev { display: inline-block; margin-top: 14px; background: var(--lemon); color: var(--ink); font-weight: 600; font-size: 14px; padding: 5px 10px; border-radius: 6px; }
.hero-r { display: flex; align-items: center; gap: 22px; }
.hero-r .rt { font-size: 16px; line-height: 1.4; }
.hero-r .rt b { display: block; font: 650 22px/1.2 var(--display); }
.cont { margin-top: -76px; position: relative; background: var(--white); border: 1px solid var(--ink-10); border-radius: var(--r); padding: 18px; display: grid; grid-template-columns: 280px minmax(0, 1fr) auto; gap: 24px; align-items: center; text-decoration: none; color: var(--ink); transition: border-color .2s, transform .2s var(--ease); }
a.cont:hover { border-color: var(--blue); transform: translateY(-2px); color: var(--ink); }
.thumb { position: relative; aspect-ratio: 16 / 9; border-radius: 6px; overflow: hidden; background: var(--blue-900); }
.thumb img { width: 100%; height: 100%; object-fit: cover; }
.thumb .pl { position: absolute; left: 50%; top: 50%; width: 52px; height: 52px; margin: -26px 0 0 -26px; border-radius: 50%; background: var(--orange); display: grid; place-items: center; transition: transform .2s var(--ease); }
.thumb .pl svg { width: 20px; height: 20px; margin-left: 3px; color: var(--ink); }
a:hover .thumb .pl { transform: scale(1.08); }
.thumb.task { background: var(--peach); display: grid; place-items: center; }
.thumb.task svg { width: 40%; height: 40%; color: var(--ink); }
.thumb.fb { display: grid; place-items: center; }
.thumb.fb img { display: none; }
.cont .k { color: var(--blue); font-weight: 600; font-size: 15px; }
.cont h2 { font-size: 24px; margin: 6px 0 6px; }
.cont .m { color: var(--ink-70); font-size: 15px; }
.cont.fin { grid-template-columns: minmax(0, 1fr) auto; background: var(--lemon-50); border-color: var(--lemon-200); }
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; margin: 24px 0 0; }
.stat { border: 1px solid var(--ink-10); border-radius: var(--r); padding: 16px 18px; }
.stat > span { display: block; color: var(--ink-70); font-size: 15px; }
.stat b { display: block; font: 700 28px/1.15 var(--display); letter-spacing: -0.01em; margin-top: 4px; }
.stat b small { font-size: 16px; font-weight: 500; color: var(--ink-70); }
.sec-h { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin: 52px 0 18px; }
.sec-h h2 { font-size: 28px; }
.sec-h p { color: var(--ink-70); font-size: 15px; }
.weeks { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-bottom: 72px; }
.wk { position: relative; display: flex; flex-direction: column; gap: 10px; background: var(--white); border: 1px solid var(--ink-10); border-radius: var(--r); padding: 18px 18px 16px; text-decoration: none; color: var(--ink); transition: border-color .2s, transform .2s var(--ease), background-color .2s; }
.wk:hover { border-color: var(--blue); transform: translateY(-3px); color: var(--ink); }
.wk:active { transform: translateY(-1px); }
.wk .top { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.wk .no { color: var(--blue); font-weight: 600; font-size: 15px; }
.wk h3 { font-size: 20px; }
.wk .sm { color: var(--ink-70); font-size: 15px; line-height: 1.45; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.wk .ft { margin-top: auto; padding-top: 8px; }
.wk .ft .row { display: flex; justify-content: space-between; gap: 10px; font-size: 14px; color: var(--ink-70); margin-bottom: 8px; }
.wk .ft .row b { color: var(--ink); font-weight: 600; }
.wk.cur { border: 2px solid var(--blue); padding: 17px 17px 15px; background: var(--sky-50); }
.wk.cur .here { position: absolute; top: -12px; left: 14px; background: var(--blue); color: var(--white); font-size: 14px; font-weight: 600; padding: 3px 9px; border-radius: 6px; }
.wk.proj { background: var(--peach-50); border-color: var(--peach-200); }
.wk.proj:hover { border-color: var(--orange-700); }
.wk.proj .no { color: var(--orange-700); }
.wk.isdone .no::after { content: ''; }
.how { color: var(--ink-70); font-size: 15px; margin: -48px 0 64px; }

/* ---------- week page ---------- */
.wkp-h { background: var(--sky-50); border-bottom: 1px solid var(--sky-100); padding: 26px 0 30px; }
.back { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; text-decoration: none; font-size: 15px; margin-bottom: 6px; min-height: 40px; }
.back svg { width: 16px; height: 16px; }
.wkp-row { display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.wkp-h .no { color: var(--blue); font-weight: 600; }
.wkp-h h1 { font-size: clamp(28px, 3vw, 40px); margin: 4px 0 8px; }
.wkp-h .sm { color: var(--ink-70); max-width: 62ch; }
.wkp-r { display: flex; align-items: center; gap: 16px; flex: none; }
.wkp-r .t { font-size: 15px; color: var(--ink-70); }
.wkp-r .t b { display: block; color: var(--ink); font: 650 18px/1.2 var(--display); }
.lessons { list-style: none; margin: 26px 0 40px; padding: 0; display: grid; gap: 10px; }
.lessons a { display: grid; grid-template-columns: 30px 156px minmax(0, 1fr) auto; gap: 16px; align-items: center; padding: 12px 16px 12px 12px; border: 1px solid var(--ink-10); border-radius: var(--r); text-decoration: none; color: var(--ink); transition: border-color .2s, background-color .2s, transform .2s var(--ease); }
.lessons a:hover { border-color: var(--blue); transform: translateX(2px); color: var(--ink); }
.lessons .cur a { border: 2px solid var(--blue); padding: 11px 15px 11px 11px; background: var(--sky-50); }
.lessons .thumb .pl { width: 34px; height: 34px; margin: -17px 0 0 -17px; }
.lessons .thumb .pl svg { width: 14px; height: 14px; margin-left: 2px; }
.lessons .tt { font-weight: 600; font-size: 17px; line-height: 1.35; }
.lessons .mt { color: var(--ink-70); font-size: 14px; margin-top: 3px; display: flex; flex-wrap: wrap; gap: 6px 10px; align-items: center; }
.lessons .go { color: var(--blue); font-weight: 600; font-size: 15px; display: flex; align-items: center; gap: 4px; }
.lessons .go svg { width: 16px; height: 16px; }
.ck { width: 28px; height: 28px; border-radius: 50%; border: 2px solid var(--ink-40); display: grid; place-items: center; color: transparent; flex: none; transition: background-color .25s, border-color .25s; }
.ck svg { width: 15px; height: 15px; }
.done .ck, .ck.on { background: var(--blue); border-color: var(--blue); color: var(--white); }
.rail li.flash .ck svg path { stroke-dasharray: 20; animation: draw .45s var(--ease) both; }
@keyframes draw { from { stroke-dashoffset: 20; } to { stroke-dashoffset: 0; } }
.wk-nav { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 64px; flex-wrap: wrap; }

/* ---------- lesson page ---------- */
.lp { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 32px; padding-top: 24px; padding-bottom: 64px; align-items: start; }
.crumb { font-size: 15px; color: var(--ink-70); margin-bottom: 12px; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.crumb a { font-weight: 600; text-decoration: none; display: inline-flex; align-items: center; min-height: 40px; }
.crumb svg { width: 14px; height: 14px; color: var(--ink-40); }
.player { position: relative; aspect-ratio: 16 / 9; background: var(--blue-900); border-radius: var(--r); overflow: hidden; }
.player iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.player.v { aspect-ratio: 9 / 16; max-height: 62vh; max-width: calc(62vh * 9 / 16); margin: 0 auto; }
.taskbox { background: var(--peach-50); border: 1px solid var(--peach-200); border-radius: var(--r); padding: 24px 26px; }
.taskbox .chip { margin-bottom: 14px; }
.lh { font-size: clamp(24px, 2.4vw, 32px); margin: 20px 0 8px; }
.lmeta { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; color: var(--ink-70); font-size: 15px; }
.actbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin: 20px 0 6px; padding: 14px 0; border-top: 1px solid var(--ink-10); border-bottom: 1px solid var(--ink-10); }
.actbar .sp { flex: 1; }
#done { min-width: 168px; }
#done.on { --bg: var(--blue-50); --fg: var(--blue-700); --bd: var(--blue); }
#done.on svg path { stroke-dasharray: 20; animation: draw .45s var(--ease) both; }
#done.pop { animation: pop .35s var(--ease); }
@keyframes pop { 40% { transform: scale(1.05); } }
.keys { font-size: 14px; color: var(--ink-70); margin-top: 8px; }
.lk { background: none; border: 0; padding: 0 2px; color: var(--blue); font: 600 14px/1.4 var(--body); text-decoration: underline; text-underline-offset: 3px; cursor: pointer; min-height: 32px; }
.keys kbd { font: 600 12px/1 var(--body); border: 1px solid var(--ink-10); border-bottom-width: 2px; border-radius: 4px; padding: 2px 6px; background: var(--white); color: var(--ink); }
.tabs { margin-top: 22px; }
.tablist { display: flex; gap: 4px; border-bottom: 1px solid var(--ink-10); }
.tablist button { background: none; border: 0; border-bottom: 3px solid transparent; padding: 10px 14px; font-weight: 600; font-size: 16px; color: var(--ink-70); cursor: pointer; margin-bottom: -1px; display: flex; align-items: center; gap: 8px; }
.tablist button:hover { color: var(--ink); }
.tablist button[aria-selected="true"] { color: var(--blue); border-bottom-color: var(--blue); }
.tablist .badge { font-size: 12px; background: var(--lemon); color: var(--ink); border-radius: 6px; padding: 2px 6px; }
.tabpanel { padding: 20px 0 0; }
.tabpanel[hidden] { display: none; }
.anim .tabpanel:not([hidden]) { animation: rise .3s var(--ease) both; }
.md { font-size: 17px; line-height: 1.65; max-width: 72ch; }
.md h3, .md h2.mh { font-size: 19px; margin: 22px 0 8px; color: var(--ink); }
.md h3:first-child, .md h2.mh:first-child { margin-top: 0; }
.md p { margin: 0 0 12px; }
.md ul { margin: 0 0 14px; padding-left: 22px; }
.md li { margin: 4px 0; }
.md li::marker { color: var(--blue); }
.md b { font-weight: 700; }
.q p.qq { font: 600 19px/1.4 var(--display); margin-bottom: 16px; max-width: 62ch; }
.opts { display: grid; gap: 10px; max-width: 680px; }
.opt { display: flex; gap: 12px; align-items: flex-start; text-align: left; background: var(--white); border: 1px solid var(--ink-10); border-radius: var(--r); padding: 13px 16px; cursor: pointer; font-size: 16px; line-height: 1.45; transition: border-color .15s, background-color .15s, transform .12s var(--ease); }
.opt:hover { border-color: var(--blue); }
.opt:active { transform: scale(.995); }
.opt .rd { width: 20px; height: 20px; border-radius: 50%; border: 2px solid var(--ink-40); flex: none; margin-top: 2px; display: grid; place-items: center; color: transparent; }
.opt .rd svg { width: 12px; height: 12px; }
.opt.right { border-color: var(--blue); background: var(--blue-50); }
.opt.right .rd { border-color: var(--blue); background: var(--blue); color: var(--white); }
.opt.wrong { border-color: var(--orange-700); background: var(--orange-50); }
.opt.wrong .rd { border-color: var(--orange-700); background: var(--orange-700); color: var(--white); }
.opt[disabled] { cursor: default; }
.verdict { margin-top: 14px; max-width: 680px; }
.src { margin-top: 26px; font-size: 14px; color: var(--ink-70); }
.rail { position: sticky; top: 92px; border: 1px solid var(--ink-10); border-radius: var(--r); overflow: hidden; }
.rail-h { padding: 16px 18px 14px; background: var(--sky-50); border-bottom: 1px solid var(--sky-100); }
.rail-h .no { color: var(--blue); font-weight: 600; font-size: 14px; }
.rail-h h2 { font-size: 18px; margin: 2px 0 10px; }
.rail-h .row { display: flex; justify-content: space-between; font-size: 14px; color: var(--ink-70); margin-bottom: 8px; }
.rail-h .row b { color: var(--ink); }
.rail ol { list-style: none; margin: 0; padding: 6px; max-height: min(56vh, 520px); overflow-y: auto; }
.rail li a { display: flex; gap: 10px; align-items: flex-start; padding: 9px 10px; border-radius: 6px; text-decoration: none; color: var(--ink); font-size: 15px; line-height: 1.35; transition: background-color .15s; }
.rail li a:hover { background: var(--sky-50); color: var(--ink); }
.rail li.cur a { background: var(--blue-50); font-weight: 600; }
.rail li .ck { width: 22px; height: 22px; border-width: 2px; }
.rail li .ck svg { width: 12px; height: 12px; }
.rail li .d { display: block; color: var(--ink-70); font-size: 14px; font-weight: 400; margin-top: 1px; }
.rail-f { display: grid; grid-template-columns: 1fr auto 1fr; gap: 8px; padding: 4px 12px; border-top: 1px solid var(--ink-10); font-size: 14px; }
.rail-f > :last-child { justify-self: end; }
.rail-f a { font-weight: 600; text-decoration: none; display: inline-flex; gap: 4px; align-items: center; min-height: 40px; }
.rail-f a svg { width: 14px; height: 14px; }
.lp .mob { display: none; }

/* ---------- toast ---------- */
.toast { position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px); background: var(--blue-900); color: var(--white); padding: 12px 18px; border-radius: var(--r); font-weight: 600; font-size: 15px; z-index: 50; opacity: 0; pointer-events: none; transition: opacity .2s, transform .25s var(--ease); max-width: calc(100vw - 32px); display: flex; gap: 10px; align-items: center; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast svg { width: 18px; height: 18px; color: var(--lemon); flex: none; }

/* ---------- admin ---------- */
.adm-h { background: var(--sky-50); border-bottom: 1px solid var(--sky-100); padding: 28px 0 0; }
.adm-h .k { color: var(--blue); font-weight: 600; font-size: 15px; }
.adm-h h1 { font-size: clamp(28px, 3vw, 38px); margin: 4px 0 6px; }
.adm-h .sub { color: var(--ink-70); max-width: 70ch; }
.tiles { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin: 22px 0 22px; }
.tile { background: var(--white); border: 1px solid var(--ink-10); border-radius: var(--r); padding: 14px 16px; }
.tile > span { display: block; font-size: 14px; color: var(--ink-70); }
.tile b { display: block; font: 700 30px/1.15 var(--display); margin-top: 4px; }
.tile i { display: block; font-style: normal; font-size: 14px; color: var(--ink-70); margin-top: 2px; }
.adm-tabs { display: flex; gap: 4px; overflow-x: auto; }
.adm-tabs a { padding: 12px 16px; font-weight: 600; text-decoration: none; color: var(--ink-70); border-bottom: 3px solid transparent; white-space: nowrap; }
.adm-tabs a:hover { color: var(--ink); }
.adm-tabs a[aria-current="page"] { color: var(--blue); border-bottom-color: var(--blue); }
.adm-b { padding: 24px 0 72px; }
.toolbar { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-bottom: 16px; }
.search { position: relative; flex: 1 1 260px; max-width: 420px; }
.search svg { position: absolute; left: 12px; top: 50%; width: 18px; height: 18px; margin-top: -9px; color: var(--ink-70); }
.search input { width: 100%; font: 400 16px/1.4 var(--body); padding: 10px 12px 10px 38px; border: 1px solid var(--ink-40); border-radius: var(--r); }
.search input:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 2px var(--blue); }
.seg { display: inline-flex; border: 1px solid var(--ink-10); border-radius: var(--r); padding: 3px; gap: 2px; background: var(--white); }
.seg button { border: 0; background: none; min-height: 40px; padding: 7px 12px; border-radius: 6px; font-weight: 600; font-size: 14px; color: var(--ink-70); cursor: pointer; white-space: nowrap; transition: background-color .15s, color .15s; }
.seg button:hover { color: var(--ink); background: var(--sky-50); }
.seg button[aria-pressed="true"] { background: var(--blue); color: var(--white); }
.seg.sm button { min-height: 36px; padding: 5px 10px; font-size: 14px; }
.seg.sm button[aria-pressed="true"][data-v="paused"] { background: var(--peach); color: var(--ink); }
.seg.sm button[aria-pressed="true"][data-v="left"] { background: var(--ink-10); color: var(--ink); }
.tbl-box { border: 1px solid var(--ink-10); border-radius: var(--r); overflow-x: auto; }
.tbl { width: 100%; border-collapse: collapse; font-size: 15px; min-width: 760px; }
.tbl th { text-align: left; font-weight: 600; color: var(--ink-70); font-size: 14px; padding: 11px 14px; background: var(--sky-50); border-bottom: 1px solid var(--ink-10); white-space: nowrap; }
.tbl th button { background: none; border: 0; padding: 0; font: inherit; color: inherit; cursor: pointer; display: inline-flex; gap: 4px; align-items: center; min-height: 36px; }
.tbl th button:hover { color: var(--ink); }
.tbl th button svg { width: 14px; height: 14px; }
.tbl td { padding: 12px 14px; border-bottom: 1px solid var(--ink-10); vertical-align: middle; }
.tbl tr:last-child td { border-bottom: 0; }
.tbl tbody tr { transition: background-color .15s; }
.tbl tbody tr:hover { background: var(--sky-50); }
.tbl .nm b { display: block; font-weight: 600; }
.tbl .nm span { color: var(--ink-70); font-size: 14px; overflow-wrap: anywhere; }
.tbl .pg { min-width: 170px; }
.tbl .pg .row { display: flex; justify-content: space-between; font-size: 14px; margin-bottom: 6px; }
.tbl .pg .row b { font-weight: 600; }
.tbl .pg .row span { color: var(--ink-70); }
.tbl .saving { opacity: .6; }
.empty { padding: 36px 20px; text-align: center; color: var(--ink-70); }
.empty b { display: block; color: var(--ink); font: 650 20px/1.3 var(--display); margin-bottom: 6px; }
.add-g { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr); gap: 20px; align-items: start; }
.panel { border: 1px solid var(--ink-10); border-radius: var(--r); padding: 20px 22px; }
.panel h2 { font-size: 21px; margin-bottom: 6px; }
.panel > p.sub { color: var(--ink-70); font-size: 15px; margin-bottom: 18px; }
.pv { margin-top: 14px; }
.pv-sum { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; font-size: 14px; }
.pv-list { border: 1px solid var(--ink-10); border-radius: var(--r); max-height: 340px; overflow: auto; }
.pv-list .r { display: grid; grid-template-columns: 24px minmax(0, 1fr) auto; gap: 10px; align-items: center; padding: 9px 12px; border-bottom: 1px solid var(--ink-10); font-size: 14px; }
.pv-list .r:last-child { border-bottom: 0; }
.pv-list .r b { font-weight: 600; display: block; font-size: 15px; }
.pv-list .r .e { color: var(--ink-70); overflow-wrap: anywhere; }
.pv-list .r .s { font-weight: 600; font-size: 13px; text-align: right; }
.pv-list .r .s.ok { color: var(--blue-700); }
.pv-list .r .s.bad { color: var(--orange-700); }
.pv-list .r .s.wait { color: var(--ink-70); }
.pv-list .r svg { width: 18px; height: 18px; }
.pv-list .r .i-ok { color: var(--blue); }
.pv-list .r .i-bad { color: var(--orange-700); }
.les-wk { margin: 0 0 22px; }
.les-wk h3 { font-size: 18px; margin: 0 0 10px; display: flex; gap: 10px; align-items: baseline; }
.les-wk h3 span { color: var(--ink-70); font: 400 14px/1 var(--body); }
.les-row { display: grid; grid-template-columns: 112px minmax(0, 1fr) auto; gap: 14px; align-items: center; padding: 10px 12px; border: 1px solid var(--ink-10); border-radius: var(--r); margin-bottom: 8px; }
.les-row .tt { font-weight: 600; line-height: 1.35; }
.les-row .mt { color: var(--ink-70); font-size: 14px; margin-top: 2px; overflow-wrap: anywhere; }
.swap { grid-column: 1 / -1; border-top: 1px solid var(--ink-10); padding-top: 14px; margin-top: 4px; display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1.2fr) minmax(0, .8fr); gap: 12px; align-items: end; }
.swap .field { margin: 0; }
.swap .acts { grid-column: 1 / -1; display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.swap .acts .hint { color: var(--ink-70); font-size: 14px; }
.ref-door { max-width: 560px; margin: 64px auto; padding: 0 24px; text-align: left; }
.ref-door h1 { font-size: 32px; margin: 8px 0 10px; }
.ref-door p { color: var(--ink-70); margin-bottom: 20px; }

/* ---------- footer ---------- */
.lf { border-top: 1px solid var(--ink-10); background: var(--white); }
.lf-in { max-width: var(--wrap); margin: 0 auto; padding: 22px 24px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px 24px; align-items: center; font-size: 14px; color: var(--ink-70); }
.lf-in .l { display: flex; align-items: center; gap: 12px; }
.lf-in .l img { width: 28px; height: auto; }
.lf-in nav { display: flex; gap: 18px; flex-wrap: wrap; }
.lf-in nav a { color: var(--ink-70); }
.lf-in nav a:hover { color: var(--blue); }

/* ---------- page motion ---------- */
.anim .rise { animation: rise .45s var(--ease) both; }
.anim .rise.d1 { animation-delay: .05s; } .anim .rise.d2 { animation-delay: .1s; } .anim .rise.d3 { animation-delay: .15s; }
@keyframes rise { from { opacity: 0; transform: translateY(10px); } }
.anim .weeks .wk, .anim .lessons li { animation: rise .45s var(--ease) both; animation-delay: calc(var(--i, 0) * 35ms + .1s); }
@keyframes drop { from { opacity: 0; transform: translateY(-6px); } }
::view-transition-old(root) { animation: vt-out .18s var(--ease) both; }
::view-transition-new(root) { animation: vt-in .28s var(--ease) both; }
@keyframes vt-out { to { opacity: 0; } }
@keyframes vt-in { from { opacity: 0; transform: translateY(8px); } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-delay: 0s !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .sk::after { display: none; }
  ::view-transition-old(root), ::view-transition-new(root) { animation: none !important; }
}


/* ---------- review pass (18 Oct): colour roles, this-week panel, band ---------- */
h1[tabindex="-1"]:focus { outline: none; }
.hero h1 em, .door-l h1 em { font-style: normal; color: var(--lemon); }
a.cont:focus-visible { outline-color: var(--ink); }
.cont { grid-template-columns: 340px minmax(0, 1fr) auto; }
.cont h2 { font-size: 27px; }
.thumb .dur { position: absolute; right: 6px; bottom: 6px; background: var(--white); color: var(--ink); font: 600 13px/1 var(--body); padding: 4px 6px; border-radius: 4px; }
.now { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 16px; margin-top: 24px; align-items: start; }
.now .stats { grid-template-columns: 1fr; margin: 0; }
.tw { border: 1px solid var(--ink-10); border-radius: var(--r); padding: 18px 18px 8px; }
.tw-h { display: flex; justify-content: space-between; align-items: flex-end; gap: 12px; margin-bottom: 10px; }
.tw-h .no { color: var(--blue); font-weight: 600; font-size: 15px; }
.tw-h h2 { font-size: 22px; margin-top: 2px; }
.tw-p { color: var(--ink-70); font-size: 15px; white-space: nowrap; }
.tw-p b { color: var(--ink); }
.tw ol { list-style: none; margin: 12px -8px 0; padding: 0; }
.tw li a { display: grid; grid-template-columns: 26px minmax(0, 1fr) auto; gap: 12px; align-items: center; padding: 9px 8px; border-radius: 6px; color: var(--ink); text-decoration: none; min-height: 44px; transition: background-color .15s; }
.tw li a:hover { background: var(--sky-50); color: var(--ink); }
.tw li.cur a { background: var(--blue-50); }
.tw li .ck { width: 24px; height: 24px; }
.tw li .ck svg { width: 13px; height: 13px; }
.tw li .t { font-weight: 600; font-size: 16px; line-height: 1.35; }
.tw li .d { display: block; color: var(--ink-70); font-weight: 400; font-size: 14px; }
.tw li .go { color: var(--blue); font-weight: 600; font-size: 15px; }
.tw li.done .go { color: var(--ink-70); }
.cur .ck { border-color: var(--ink-70); }
.band { background: var(--sky-50); border-top: 1px solid var(--sky-100); margin-top: 48px; padding: 4px 0 8px; }
.band .sec-h { margin-top: 36px; }
.band .how { margin: -40px 0 40px; }
.wk.isdone { background: var(--lemon-50); border-color: var(--lemon-200); }
.wk.isdone:hover { border-color: var(--blue); }
.wk .top { min-height: 28px; }

/* ---------- responsive ---------- */
@media (max-width: 1100px) {
  .weeks { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .lp { grid-template-columns: minmax(0, 1fr) 300px; gap: 24px; }
  .cont { grid-template-columns: 220px minmax(0, 1fr); }
  .cont > .btn { grid-column: 1 / -1; justify-self: start; }
  .add-g { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .door { grid-template-columns: 1fr; min-height: 0; }
  .door-l { padding: 32px 20px 28px; gap: 18px; }
  .door-l .lg { width: 170px; }
  .door-l .outline-wrap { display: none; }
  .door-l .by { display: none; }
  .door-r { padding: 28px 20px 40px; align-items: flex-start; }
  .door-out { display: block; padding: 0 20px 40px; }
  .door-out details { border: 1px solid var(--ink-10); border-radius: var(--r); }
  .door-out summary { padding: 14px 16px; font-weight: 600; cursor: pointer; }
  .door-out .outline { grid-template-columns: 1fr; border-top-color: var(--ink-10); margin: 0 16px 8px; }
  .door-out .outline li { border-bottom-color: var(--ink-10); }
  .door-out .outline li .ow { color: var(--blue); }
  .door-out .outline li .n { color: var(--ink-70); }
  .lp { grid-template-columns: 1fr; padding-top: 0; }
  .lp .side { display: none; }
  .lp .mob { display: block; margin-top: 28px; }
  .lp .mob .rail { position: static; }
  .lp .player { margin: 0 -24px; border-radius: 0; }
  .lp .player.v { margin: 0 auto; border-radius: var(--r); }
  .crumb { margin-top: 16px; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tiles { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-in { flex-direction: column; align-items: flex-start; gap: 22px; }
  .wkp-row { flex-direction: column; align-items: flex-start; }
  .swap { grid-template-columns: 1fr 1fr; }
  .swap .field:first-child { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .wrap, .tb-in, .lf-in { padding-left: 16px; padding-right: 16px; }
  .tb-in { height: 60px; gap: 8px; }
  .tb .logo img { width: 148px; }
  .acct .who-t { display: none; }
  .tb nav a.nl { padding: 8px 9px; font-size: 15px; }
  .hero { padding: 28px 0 96px; }
  .hero .meta { font-size: 16px; }
  .ring { width: 116px; height: 116px; }
  .ring .num b { font-size: 30px; }
  .ring .num b small { font-size: 16px; }
  .ring .num > span { font-size: 13px; }
  .cont { grid-template-columns: 1fr; gap: 14px; padding: 14px; margin-top: -72px; }
  .cont > .btn { width: 100%; }
  .cont h2 { font-size: 20px; }
  .stats { gap: 10px; }
  .stat { padding: 12px 14px; }
  .stat b { font-size: 24px; }
  .weeks { grid-template-columns: 1fr; gap: 14px; }
  .sec-h { flex-direction: column; align-items: flex-start; gap: 4px; margin-top: 40px; }
  .sec-h h2 { font-size: 24px; }
  .lessons a { grid-template-columns: 26px minmax(0, 1fr); gap: 12px; padding: 12px; }
  .lessons .cur a { padding: 11px; }
  .lessons .thumb, .lessons .go { display: none; }
  .lp .player { margin: 0 -16px; }
  .actbar { gap: 8px; }
  .actbar .sp { display: none; }
  #done { order: -1; width: 100%; }
  .actbar .nav-b { flex: 1; }
  .keys { display: none; }
  .tablist button { padding: 10px 10px; font-size: 15px; }
  .tiles { gap: 10px; }
  .tile b { font-size: 26px; }
  .toolbar .seg { width: 100%; overflow-x: auto; }
  .les-row { grid-template-columns: 84px minmax(0, 1fr); }
  .les-row > .btn { grid-column: 1 / -1; }
  .swap { grid-template-columns: 1fr; }
  .panel { padding: 16px; }
  .door-card h2 { font-size: 26px; }
  .outline { grid-template-columns: 1fr; }
}
@media (max-width: 360px) {
  .tb .logo img { width: 140px; }
  .tb nav a.nl { padding: 8px 6px; }
}

@media (max-width: 1100px) {
  .cont { grid-template-columns: 240px minmax(0, 1fr); }
  .now { grid-template-columns: 1fr; }
  .now .stats { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
  .door { min-height: 0; }
  .door-l .lede, .door-l .facts { display: none; }
  .door-l h1 { font-size: 28px; }
  .door-r { padding-top: 64px; }
  .door-out summary { list-style: none; display: flex; justify-content: space-between; align-items: center; min-height: 48px; }
  .door-out summary::-webkit-details-marker { display: none; }
  .door-out summary::after { content: ''; width: 9px; height: 9px; border-right: 2px solid var(--blue); border-bottom: 2px solid var(--blue); transform: rotate(45deg); margin-right: 4px; }
  .door-out details[open] summary::after { transform: rotate(-135deg); }
  .lp .mob .rail ol { max-height: none; overflow: visible; }
}
@media (max-width: 640px) {
  .cont { grid-template-columns: 1fr; }
  .cont h2 { font-size: 21px; }
  .now .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat b small { display: block; }
  .tw { padding: 14px 14px 6px; }
  .tw-h { flex-direction: column; align-items: flex-start; gap: 4px; }
  .tw li a { grid-template-columns: 24px minmax(0, 1fr); }
  .tw li .go { display: none; }
  .band { margin-top: 36px; }
  .band .how { margin: -24px 0 32px; }
  .toolbar .btn.cta { width: 100%; }
  .tbl { min-width: 0; }
  .tbl thead { display: none; }
  .tbl, .tbl tbody, .tbl tr, .tbl td { display: block; }
  .tbl tr { padding: 14px; border-bottom: 1px solid var(--ink-10); }
  .tbl tr:last-child { border-bottom: 0; }
  .tbl td { border: 0; padding: 4px 0; }
  .tbl td[data-label]::before { content: attr(data-label) ': '; color: var(--ink-70); }
  .tbl td.pg { min-width: 0; padding: 8px 0; }
  .tbl td.ac { padding-top: 8px; }
}