/* Terminus: a ticket on a dark desk. Paper for what you read, desk for what you press between. */
@font-face{font-family:"Anek Latin";src:url("../fonts/AnekLatin-wdth-wght.woff2") format("woff2");font-weight:100 800;font-stretch:75% 125%;font-display:swap}
@font-face{font-family:"Martian Mono";src:url("../fonts/MartianMono-wdth-wght.woff2") format("woff2");font-weight:100 800;font-stretch:75% 112.5%;font-display:swap}

:root{
  --desk:#131B16;--desk2:#101612;--edge:#26302A;--board:#181B19;--ticket:#D8E8D3;--ticket2:#C5DBC0;--paper-hi:#E6F1E2;
  --ink:#0D2418;--ink2:#35513F;--red:#B0241A;--red-line:#C42B1E;--rule:#7FA37E;--warm:#F3ECD4;--mute:#9AA79C;--amber:#F2B23C;
  --c401:#8E3B46;--c435:#1F6F78;--c405:#3D5A9E;--c421:#8F5710;--cHUM405:#4F7022;
  --sans:"Anek Latin",system-ui,"Segoe UI",sans-serif;--mono:"Martian Mono",ui-monospace,Consolas,monospace;
  color-scheme:dark;accent-color:#B0241A;caret-color:#B0241A;
}
[data-c="401"]{--cc:var(--c401)}[data-c="435"]{--cc:var(--c435)}[data-c="405"]{--cc:var(--c405)}[data-c="421"]{--cc:var(--c421)}[data-c="HUM405"]{--cc:var(--cHUM405)}
*{box-sizing:border-box}
html{background:var(--desk);-webkit-text-size-adjust:100%;scrollbar-color:#3a4a40 var(--desk)}
body{margin:0;min-height:100vh;color:var(--warm);font:400 16px/1.4 var(--sans);font-variant-numeric:lining-nums tabular-nums;-webkit-tap-highlight-color:transparent}
::selection{background:var(--red-line);color:#fff}
h1,h2,h3,p,dl,dd,ol,ul{margin:0}
ol,ul{padding:0;list-style:none}
a{color:inherit}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;box-shadow:0 0 0 5px var(--amber);border-radius:8px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
sub{font-size:.72em;line-height:0}
.mono{font-family:var(--mono)}

/* ---------- shell and navigation ---------- */
.shell{max-width:480px;margin:0 auto;padding:14px 12px 112px}
.nav{position:fixed;inset:auto 0 0 0;z-index:20;display:flex;justify-content:space-around;background:var(--desk2);border-top:1px solid var(--edge);padding:6px 4px calc(6px + env(safe-area-inset-bottom))}
.nav a{flex:1 1 0;display:grid;justify-items:center;align-content:center;gap:3px;min-width:0;min-height:50px;padding:3px 1px;border-radius:10px;color:var(--mute);text-decoration:none;font:500 10px var(--mono);letter-spacing:0}
.nav a svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.nav a[aria-current="page"]{color:var(--warm);box-shadow:inset 0 -2px 0 var(--red-line)}
.nav a:hover{color:var(--warm)}
.view{display:grid;grid-template-columns:minmax(0,1fr);gap:18px;outline:none}

/* ---------- paper ---------- */
.ticket{position:relative;color:var(--ink);border-radius:16px;filter:drop-shadow(0 16px 22px rgba(0,0,0,.5))}
.sheet{position:relative;color:var(--ink);border-radius:16px;background:var(--ticket);box-shadow:0 14px 26px rgba(0,0,0,.42);overflow:hidden;overflow:clip}   /* clip, not hidden: hidden would stop sticky columns from sticking */
.band{position:relative;overflow:hidden;height:60px;background:var(--ticket2);display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 16px;border-radius:16px 16px 0 0}
.band.slim{height:46px}
.band svg.guil{position:absolute;inset:0;width:100%;height:100%}
.band b,.band span{position:relative;font:600 11px var(--mono);letter-spacing:.14em;text-transform:uppercase;white-space:nowrap}
.band b{color:var(--ink)}.band span{color:var(--red)}
.body{position:relative;background:var(--ticket);padding:16px 18px 20px}
.ticket>.body{border-radius:0 0 10px 10px}
.sheet>.body{padding:18px 18px 24px}
h1{font-size:34px;line-height:1.02;font-weight:800;font-stretch:88%;letter-spacing:-.012em;text-wrap:balance}
h1.date{font-size:48px;line-height:.98;letter-spacing:-.015em}
h2{font-size:21px;line-height:1.15;font-weight:700;margin:26px 0 8px;text-wrap:balance}
h3{font-size:18.5px;line-height:1.2;font-weight:700;text-wrap:balance}
.lede{margin-top:8px;color:var(--ink2);font-size:15.5px;max-width:62ch}
.back{display:inline-flex;align-items:center;gap:6px;min-height:44px;margin:-8px 0 4px -6px;padding:0 6px;color:var(--ink2);font-size:14.5px;text-decoration:none;border-radius:8px}
.back svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.back:hover{color:var(--ink)}
.dots{border:0;border-top:2px dotted var(--rule);margin:18px 0 0}

/* ---------- controls ---------- */
.btn{appearance:none;border:0;min-height:46px;padding:0 24px;border-radius:10px;background:var(--ink);color:var(--ticket);font:700 15px var(--sans);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;transition:background .15s,transform .1s}
.btn:hover{background:#17402B}
.btn:active{transform:translateY(1px)}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.btn.ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--ink)}
.btn.ghost:hover{background:rgba(13,36,24,.08)}
.btn.sm{min-height:44px;padding:0 16px;font-size:14.5px}
.btn.warm{background:var(--warm);color:var(--ink)}
.btn.warm:hover{background:#fff}
.btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.lnk{color:var(--ink);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1.5px}
.lnk:hover{color:var(--red)}
.row-actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px 12px}
.chip{display:inline-flex;align-items:center;min-height:24px;padding:0 9px;border-radius:12px;font:600 12px var(--sans);letter-spacing:.01em;box-shadow:inset 0 0 0 1.5px var(--ink2);color:var(--ink2);white-space:nowrap}
.chip.core{background:var(--ink);color:var(--ticket);box-shadow:none}
.chip.cc{background:var(--cc);color:#fff;box-shadow:none}
.chip.id{font:600 11.5px var(--mono);letter-spacing:.04em;box-shadow:none;padding:0;color:var(--red);min-height:0}
.chips{display:flex;flex-wrap:wrap;gap:6px 8px;align-items:center}

/* punch toggle: a hole you punch or reopen */
.punch{appearance:none;flex:none;width:44px;height:44px;margin:-4px 0 -4px -10px;padding:0;border:0;border-radius:50%;background:none;display:grid;place-items:center;cursor:pointer}
.punch i{width:26px;height:26px;border-radius:50%;border:2px solid var(--ink2);display:grid;place-items:center;transition:background .15s,border-color .15s}
.punch:hover i{border-color:var(--ink)}
.punch svg{width:14px;height:14px;fill:none;stroke:var(--ticket);stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round;opacity:0}
.punch[aria-pressed="true"] i{border-color:var(--desk);background:var(--desk);box-shadow:inset 0 2px 3px rgba(0,0,0,.65)}
.punch[aria-pressed="true"] svg{opacity:1}
.punch.parked i{border-style:dashed;border-color:var(--ink2)}
.punch.parked svg{opacity:.9;stroke:var(--ink2)}
.punch[disabled]{opacity:.5;cursor:default}

/* ---------- Today ---------- */
.today-plan{margin-top:8px;font-size:15.5px;color:var(--ink)}
.today-plan .chip{margin-right:8px;vertical-align:1px}
.today-plan b{font-weight:700}
.exam{margin-top:6px;color:var(--ink2);font-size:15px}
.exam b{color:var(--ink)}
.route{margin:12px -4px 0}
.route svg{display:block;width:100%;height:auto;overflow:visible}
.fields{display:grid;grid-template-columns:1fr 1fr;gap:10px 16px;margin:10px 0 14px}
.fields>div{border-top:1px solid var(--rule);padding-top:5px;min-width:0}
.fields dt{font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink2);font-weight:700}
.fields dd{margin-top:2px;font:600 14.5px/1.3 var(--mono);color:var(--ink)}
.fields dd small{display:block;font:500 12px var(--sans);color:var(--ink2);margin-top:1px}
.punches{display:grid;grid-template-columns:repeat(10,1fr);gap:8px;padding:2px 2px 4px}
.hole{aspect-ratio:1;border-radius:50%;border:1.5px solid var(--ink2);position:relative}
.hole.on{border-color:transparent;background:var(--desk);box-shadow:inset 0 2px 3px rgba(0,0,0,.65)}
.hole.half::after{content:"";position:absolute;inset:0;border-radius:50%;background:linear-gradient(90deg,rgba(53,81,63,.35) 50%,transparent 50%)}
.hole.new{animation:punch .42s cubic-bezier(.16,1,.3,1) both}
@keyframes punch{0%{transform:scale(1.6)}60%{transform:scale(.88)}100%{transform:scale(1)}}
.pace-note{margin-top:8px;font-size:14.5px;color:var(--ink2)}
.pace-note b{color:var(--ink)}
.status-line{margin-top:10px;font-size:14.5px;color:var(--ink2)}

/* the stubs: topics to tear off */
.stubs{list-style:none;margin:0;padding:0}
.stub{position:relative;border-radius:10px;background:var(--ticket);padding:22px 18px 18px;display:grid;gap:6px;transform-origin:0 0}
.stub:last-child{border-radius:10px 10px 16px 16px}
.stub::before{content:"";position:absolute;left:0;right:0;top:0;height:10px;pointer-events:none;background:radial-gradient(circle at 50% 0,var(--desk) 2.6px,transparent 3.2px) 0 0/10px 10px repeat-x}
.stub:not(:last-child)::after,.body.perf::after{content:"";position:absolute;left:0;right:0;bottom:0;height:10px;pointer-events:none;background:radial-gradient(circle at 50% 100%,var(--desk) 2.6px,transparent 3.2px) 0 100%/10px 10px repeat-x}
.ticket>.body.perf{border-radius:0 0 10px 10px}
.stub-head{display:flex;align-items:center;justify-content:space-between;gap:10px}
.stub h3 a{text-decoration:none}
.stub h3 a:hover{text-decoration:underline;text-underline-offset:3px}
.covers{font-size:14px;color:var(--ink2);line-height:1.35}
.meta{font-size:14px;color:var(--ink2)}
.work{display:grid;gap:5px;margin:4px 0 2px}
.work div{display:grid;grid-template-columns:62px minmax(0,1fr);gap:8px;font-size:14px;line-height:1.35}
.work dt{font:700 11.5px/1.7 var(--sans);letter-spacing:.07em;text-transform:uppercase;color:var(--ink2)}
.work dd{color:var(--ink)}
.notice{font-size:13.5px;color:var(--ink);background:var(--ticket2);border-radius:8px;padding:8px 10px}
.act{display:flex;align-items:center;gap:16px;margin-top:6px}
.act .lnk{display:inline-flex;align-items:center;min-height:44px}
.stub-note{font-size:13px;color:var(--ink2)}
.sheen,.shade{position:absolute;inset:0;pointer-events:none;z-index:1;opacity:0}
.sheen{background:linear-gradient(100deg,rgba(255,255,255,0) 20%,rgba(255,255,255,.5) 44%,rgba(255,255,255,0) 68%) 100% 0/240% 100% no-repeat}
.shade{background:linear-gradient(90deg,rgba(13,36,24,0) 28%,rgba(13,36,24,.2) 100%)}
.fleck{position:absolute;width:2.6px;height:1.5px;background:#EEF5EB;border-radius:.6px;pointer-events:none;z-index:4}
.empty{padding:22px 18px 22px;background:var(--ticket);border-radius:10px 10px 16px 16px;position:relative}
.empty::before{content:"";position:absolute;left:0;right:0;top:0;height:10px;background:radial-gradient(circle at 50% 0,var(--desk) 2.6px,transparent 3.2px) 0 0/10px 10px repeat-x}
.empty h3{margin-bottom:6px}

/* exam board */
.board{background:var(--board);border-radius:16px;padding:16px 14px 10px;border:1px solid var(--edge);color:var(--warm)}
.board h2{margin:0 0 8px;font-size:22px;font-weight:700}
.board table{width:100%;border-collapse:collapse;font:500 12px var(--mono)}
.board th{color:var(--mute);font-weight:500;text-align:left;padding:4px 6px 8px}
.board td{padding:10px 6px;border-top:1px solid var(--edge);white-space:nowrap}
.board td a{text-decoration:none}
.board td a:hover{text-decoration:underline}
.board tr.next td{color:var(--amber)}
.board caption{caption-side:bottom;text-align:left;color:var(--mute);font:400 12.5px var(--sans);padding:8px 6px 6px}
.flip{display:inline-block;animation:flip .42s cubic-bezier(.16,1,.3,1)}
@keyframes flip{0%{transform:rotateX(90deg);opacity:0}100%{transform:none;opacity:1}}

/* ---------- Plan ---------- */
.legend{display:flex;flex-wrap:wrap;gap:8px 14px;margin:14px 0 4px;font-size:13px;color:var(--ink2)}
.legend span{display:inline-flex;align-items:center;gap:6px}
.sw{width:16px;height:16px;border-radius:5px;display:inline-block}
.sw.first{background:color-mix(in srgb,var(--ink2) 18%,var(--ticket))}
.sw.win{background:color-mix(in srgb,var(--ink2) 38%,var(--ticket))}
.sw.exam{background:var(--ink2)}
.sw.catch{border:1.5px dashed var(--ink2)}
.sw.hol{background:var(--ticket2);position:relative;overflow:hidden}
.sw.hol::after{content:"";position:absolute;right:0;bottom:0;border-style:solid;border-width:0 0 9px 9px;border-color:transparent transparent var(--red-line) transparent}
.sw.cpm{width:auto;height:16px;padding:0 4px;border-radius:4px;background:var(--ink);color:var(--ticket);font:700 8.5px/16px var(--mono)}
.cal-wrap{display:grid;gap:22px;margin-top:10px}
.month h2{margin:12px 0 8px}
.cal{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:4px}
.dow{font:600 10.5px var(--mono);color:var(--ink2);text-align:center;padding:2px 0 4px}
.day{position:relative;display:grid;grid-template-rows:auto auto 1fr;justify-items:start;min-height:54px;padding:5px 5px 4px;border-radius:8px;background:color-mix(in srgb,var(--cc,var(--ink2)) 17%,var(--ticket));color:var(--ink);text-decoration:none;overflow:hidden}
.day.empty-cell{background:none;pointer-events:none}
.day.win{background:color-mix(in srgb,var(--cc) 34%,var(--ticket))}
.day.exam{background:var(--cc);color:#fff}
.day.catch{background:none;outline:1.5px dashed var(--ink2);outline-offset:-1.5px}
.day.free{background:rgba(13,36,24,.06)}
.day:hover{outline:2px solid var(--ink);outline-offset:-2px}
.day.today{outline:3px solid var(--ink);outline-offset:-3px}
.day .n{font:700 13px var(--sans)}
.day .c{grid-row:3;align-self:end;font:600 10px/1.15 var(--mono);letter-spacing:.02em}
.day .c em{display:none;font:500 11px var(--sans);font-style:normal;letter-spacing:0}
.day .cp{grid-row:2;margin-top:1px;font:700 8.5px/1.25 var(--mono);background:var(--ink);color:var(--ticket);border-radius:4px;padding:0 3px}
.day.exam .cp{background:#fff;color:var(--ink)}
.day .hol{position:absolute;right:0;bottom:0;width:0;height:0;border-style:solid;border-width:0 0 14px 14px;border-color:transparent transparent var(--red-line) transparent}
.cp-list{display:grid;gap:0}
.cp-item{border-top:1.5px dotted var(--rule);padding:4px 0}
.cp-item summary{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:2px 10px;align-items:center;min-height:52px;cursor:pointer;list-style:none;padding:6px 0}
.cp-item summary::-webkit-details-marker{display:none}
.cp-item summary h3{font-size:16.5px}
.cp-item summary .when{font:500 12.5px var(--mono);color:var(--ink2)}
.cp-item summary .bar{grid-column:1/-1;display:flex;gap:3px;flex-wrap:wrap;padding:2px 0}
.cp-item summary .bar i{width:11px;height:11px;border-radius:50%;border:1.5px solid var(--ink2)}
.cp-item summary .bar i.on{background:var(--desk);border-color:var(--desk)}
.cp-item[open] summary{padding-bottom:2px}
.cp-topics{padding:0 0 10px}
.cp-topics li{display:grid;grid-template-columns:20px minmax(0,1fr) auto;gap:8px;align-items:center;padding:0;font-size:14.5px}
.cp-topics .st{width:12px;height:12px;border-radius:50%;border:1.5px solid var(--ink2);align-self:center}
.cp-topics .st.on{background:var(--desk);border-color:var(--desk)}
.cp-topics .st.parked{border-style:dashed}
.cp-topics a{display:flex;align-items:center;min-height:44px;text-decoration:none}.cp-topics a:hover{text-decoration:underline}
.cp-topics .pts{font:500 12px var(--mono);color:var(--ink2)}

/* day page */
.day-hero{display:flex;flex-wrap:wrap;align-items:center;gap:8px 10px;margin-top:8px}
.plain-list{display:grid;gap:8px;margin-top:10px}
.plain-list li{padding:10px 12px;border-radius:10px;background:var(--ticket2);font-size:15px}
.day-nav{display:flex;justify-content:space-between;gap:10px;margin-top:18px}

/* ---------- Courses ---------- */
.tabs{display:flex;gap:6px;overflow-x:auto;padding:2px 0 8px;margin:0 -2px;scrollbar-width:thin}
.tabs a{flex:none;min-height:44px;display:inline-flex;align-items:center;padding:0 14px;border-radius:22px;font:600 13px var(--mono);letter-spacing:.02em;text-decoration:none;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--ink2)}
.tabs a:hover{background:rgba(13,36,24,.08)}
.tabs a[aria-current="page"]{background:var(--ink);color:var(--ticket);box-shadow:none}
.course-head{margin-top:6px}
.course-head p{color:var(--ink2);font-size:15px;margin-top:4px}
.summary-bar{display:grid;grid-template-columns:repeat(auto-fill,minmax(14px,1fr));gap:4px;margin:12px 0 4px;max-width:420px}
.summary-bar i{aspect-ratio:1;border-radius:50%;border:1.5px solid var(--ink2)}
.summary-bar i.on{background:var(--desk);border-color:var(--desk)}
.summary-bar i.half{background:linear-gradient(90deg,var(--desk) 50%,transparent 50%)}
.numbers{display:flex;flex-wrap:wrap;gap:6px 18px;margin-top:8px;font:500 13px var(--mono);color:var(--ink)}
.part-title{margin:22px 0 2px;font-size:16px;font-weight:700;color:var(--ink2)}
.trow{display:grid;grid-template-columns:44px minmax(0,1fr);gap:0 8px;padding:10px 0 12px;border-top:1.5px dotted var(--rule);align-items:start}
.trow .main{min-width:0;display:grid;gap:3px}
.trow h3{font-size:17px}
.trow h3 a{text-decoration:none}
.trow h3 a:hover{text-decoration:underline;text-underline-offset:3px}
.trow.is-done h3 a{color:var(--ink2)}
.trow .covers{font-size:13.5px}
.trow .line{display:flex;flex-wrap:wrap;gap:4px 10px;align-items:center;font-size:13px;color:var(--ink2)}
.details-box{margin-top:14px;border-radius:10px;background:var(--ticket2);padding:0 14px}
.details-box summary{min-height:48px;display:flex;align-items:center;cursor:pointer;font-weight:700;font-size:15px}
.details-box>div{padding:0 0 14px;font-size:14.5px;color:var(--ink)}
.details-box p+p{margin-top:8px}

/* ---------- Topic page ---------- */
.state-box{margin-top:16px;padding:14px;border-radius:12px;background:var(--ticket2);display:grid;gap:10px}
.state-box strong{font-size:16px}
.steps{counter-reset:s;display:grid;gap:12px;margin-top:10px}
.steps>li{counter-increment:s;display:grid;grid-template-columns:30px minmax(0,1fr);gap:10px;align-items:start}
.steps>li::before{content:counter(s);width:26px;height:26px;border-radius:50%;background:var(--ink);color:var(--ticket);display:grid;place-items:center;font:700 13px var(--mono);margin-top:1px}
.steps h3{font-size:16px}
.steps p,.steps ul{font-size:14.5px;color:var(--ink);margin-top:2px}
.steps ul{display:grid;gap:3px}
.paper{margin-top:14px}
.paper h3{font-size:15px;display:flex;align-items:center;justify-content:space-between;gap:8px;padding:6px 0;border-bottom:1.5px solid var(--ink2)}
.paper h3 span{font:500 12px var(--mono);color:var(--ink2)}
.q{display:grid;grid-template-columns:54px minmax(0,1fr);gap:2px 10px;padding:9px 0;border-bottom:1.5px dotted var(--rule);font-size:14.5px}
.q .qn{font:700 13px var(--mono);color:var(--red)}
.q .qm{grid-column:2;font-size:12.5px;color:var(--ink2)}
.q.weak .txt{color:var(--ink2)}
.pager{display:flex;justify-content:space-between;gap:10px;margin-top:22px}

/* ---------- Cut order ---------- */
.cut-row{display:grid;grid-template-columns:30px minmax(0,1fr) auto;gap:2px 10px;align-items:center;padding:10px 0;border-top:1.5px dotted var(--rule)}
.cut-row.pick{background:color-mix(in srgb,var(--amber) 30%,transparent);margin:0 -10px;padding-left:10px;padding-right:10px;border-radius:8px;border-top-color:transparent}
.cut-row .no{font:700 13px var(--mono);color:var(--ink2)}
.cut-row h3{font-size:16px}
.cut-row .sub{grid-column:2;font-size:13px;color:var(--ink2)}
.cut-row .cum{font:600 12.5px var(--mono);color:var(--ink);text-align:right}
.stepper{display:inline-flex;align-items:center;gap:8px}
.stepper button{width:44px;height:44px;border-radius:50%;border:0;box-shadow:inset 0 0 0 1.5px var(--ink);background:none;cursor:pointer;font:700 20px/1 var(--sans);color:var(--ink)}
.stepper button:hover{background:rgba(13,36,24,.08)}
.stepper output{min-width:70px;text-align:center;font:600 18px var(--mono)}
.free-box{margin-top:14px;padding:14px;border-radius:12px;background:var(--ticket2);display:grid;gap:10px}
.parked-list li{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 0;border-top:1.5px dotted var(--rule);font-size:15px}

/* ---------- More ---------- */
.more-grid{display:grid;gap:24px}
.code{display:block;width:100%;padding:12px;border-radius:10px;border:1.5px solid var(--ink2);background:var(--paper-hi);color:var(--ink);font:600 14px/1.5 var(--mono);letter-spacing:.04em;overflow-wrap:anywhere;word-break:break-all}
textarea.code{min-height:84px;resize:vertical}
.hint{font-size:13.5px;color:var(--ink2);margin-top:6px}
.msg{margin-top:10px;padding:10px 12px;border-radius:10px;background:var(--ticket2);font-size:14.5px}
.msg.bad{background:#EFD3CD;color:#5A140D}
.recent li{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:2px 10px;align-items:center;padding:8px 0;border-top:1.5px dotted var(--rule)}
.recent .what{font-size:14.5px}
.recent .when{font:500 12px var(--mono);color:var(--ink2)}
.recent li.rev .what{color:var(--ink2);text-decoration:line-through;text-decoration-thickness:1px}
.seg{display:inline-flex;border-radius:10px;box-shadow:inset 0 0 0 1.5px var(--ink);overflow:hidden}
.seg button{appearance:none;border:0;background:none;min-height:44px;padding:0 16px;font:600 14px var(--sans);color:var(--ink);cursor:pointer}
.seg button[aria-pressed="true"]{background:var(--ink);color:var(--ticket)}
.rules{counter-reset:r;display:grid;gap:12px}
.rules li{counter-increment:r;display:grid;grid-template-columns:28px minmax(0,1fr);gap:10px;font-size:14.5px}
.rules li::before{content:counter(r);font:700 13px var(--mono);color:var(--red);padding-top:2px}
.rules b{display:block;font-size:15.5px}
.watch{display:grid;gap:10px}
.watch li{font-size:14.5px;padding:10px 12px;border-radius:10px;background:var(--ticket2)}
.fine{font-size:13px;color:var(--ink2);margin-top:20px}

/* ---------- toast ---------- */
.toast{position:fixed;left:50%;bottom:calc(76px + env(safe-area-inset-bottom));z-index:40;transform:translateX(-50%);width:max-content;display:flex;align-items:center;gap:6px;max-width:min(460px,calc(100vw - 20px));background:var(--warm);color:var(--ink);border-radius:12px;padding:6px 6px 6px 16px;box-shadow:0 14px 30px rgba(0,0,0,.55);animation:toast-in .24s cubic-bezier(.16,1,.3,1)}
.toast[hidden]{display:none}
.toast p{font-size:14.5px;line-height:1.3;padding:6px 0;min-width:0}
.toast button{appearance:none;flex:none;min-height:44px;padding:0 14px;border:0;border-radius:8px;background:none;font:700 14.5px var(--sans);color:var(--ink);cursor:pointer;text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1.5px}
.toast button:hover{background:rgba(13,36,24,.1)}
.toast .x{text-decoration:none;font-size:20px;min-width:44px;padding:0}
@keyframes toast-in{from{transform:translate(-50%,12px);opacity:0}to{transform:translate(-50%,0);opacity:1}}

/* ---------- laptop ---------- */
@media (min-width:900px){
  .shell{max-width:1180px;padding:0 40px 60px}
  .nav{position:static;display:flex;justify-content:flex-start;gap:6px;max-width:1180px;margin:0 auto;padding:24px 40px 18px;background:none;border:0}
  .nav a{flex:none;grid-auto-flow:column;gap:9px;min-height:46px;padding:0 16px;font-size:13px;letter-spacing:.03em}
  .nav a[aria-current="page"]{box-shadow:inset 0 -2px 0 var(--red-line)}
  .nav a svg{width:20px;height:20px}
  .shell{padding-top:0}
  .view.today{grid-template-columns:490px minmax(0,1fr);gap:26px 48px;align-items:start}
  .view.today .side{position:sticky;top:24px}
  .view.today .board{padding:22px 22px 14px}
  .view.today .board h2{font-size:30px;margin-bottom:12px}
  .view.today .board table{font-size:14px}
  .view.today .board td{padding:14px 8px}
  h1.date{font-size:58px}
  h1{font-size:44px}
  .sheet>.body{padding:26px 34px 34px}
  .cal-wrap{grid-template-columns:1fr 1fr;gap:34px}
  .day{min-height:86px;padding:7px 8px 6px}
  .day .n{font-size:14px}
  .day .c{font-size:10.5px}
  .day .c em{display:block;margin-top:1px}
  .more-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:18px 44px;align-items:start}
  .toast{left:24px;transform:none;bottom:24px;animation:toast-in-d .24s cubic-bezier(.16,1,.3,1)}
  @keyframes toast-in-d{from{transform:translateY(12px);opacity:0}to{transform:none;opacity:1}}
  .topic-cols{display:grid;grid-template-columns:minmax(260px,.55fr) minmax(0,2fr);gap:0 40px;align-items:start}
  .topic-cols>section:first-child{position:sticky;top:16px}   /* the work stays beside a long list of answers */
  .topic-cols>section>h2:first-child{margin-top:0}
}
@media (max-width:600px){.board th:nth-child(3),.board td:nth-child(3){display:none}.board table{font-size:12.5px}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
@media print{.nav,.toast{display:none}body{background:#fff;color:#000}}

/* ---------- small additions ---------- */
.skip{position:absolute;left:12px;top:-60px;z-index:60;background:var(--warm);color:var(--ink);padding:12px 14px;min-height:44px;border-radius:8px;font-weight:700;text-decoration:none}
.skip:focus{top:10px}
h1:focus,.view:focus{outline:none;box-shadow:none}
.plain-list li.cur{outline:2px solid var(--ink)}

/* ---------- keeping progress safe ---------- */
.side{display:grid;gap:18px}
.nudge{background:var(--board);border:1px solid var(--edge);border-radius:14px;padding:14px 14px 12px;color:var(--warm)}
.nudge p{font-size:14.5px;margin:0 0 10px;color:var(--warm)}
.nudge b{color:#fff}
.btn.ghost-dark{background:transparent;color:var(--warm);box-shadow:inset 0 0 0 1.5px var(--mute)}
.btn.ghost-dark:hover{background:rgba(243,236,212,.1)}
.nudge :focus-visible{outline-color:var(--warm)}

/* ---------- questions ---------- */
.qsearch{margin-top:14px}
.qsearch input{width:100%;min-height:52px;padding:0 14px;border-radius:12px;border:1.5px solid var(--ink2);background:var(--paper-hi);color:var(--ink);font:500 16px var(--sans);-webkit-appearance:none;appearance:none}
.qsearch input::placeholder{color:#5d7766}
.qtabs{margin-top:12px}
.tabs .tab{flex:none;min-height:44px;padding:0 11px;border-radius:22px;border:0;background:none;font:600 13px var(--mono);letter-spacing:.02em;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--ink2);cursor:pointer}
.tabs .tab:hover{background:rgba(13,36,24,.08)}
.tabs .tab[aria-pressed="true"]{background:var(--ink);color:var(--ticket);box-shadow:none}
.sel{display:block;width:100%;max-width:340px;min-height:46px;margin-top:6px;padding:0 12px;border-radius:10px;border:1.5px solid var(--ink2);background:var(--paper-hi);color:var(--ink);font:600 15px var(--sans)}
.count{margin:14px 0 4px;font:600 13px var(--mono);color:var(--ink2)}
.qcard{border-top:1.5px dotted var(--rule);padding:14px 0 6px}
.qcard header{display:flex;align-items:baseline;gap:4px 10px;flex-wrap:wrap}
.qcard .qn{font:700 16px var(--mono);color:var(--red)}
.qcard .qmeta{font-size:13.5px;color:var(--ink2)}
.qcard .qtext{margin:6px 0 8px;font-size:15px;color:var(--ink)}
.qact{display:flex;align-items:center;gap:6px 16px;margin-top:10px;flex-wrap:wrap}
.qact .lnk{display:inline-flex;align-items:center;min-height:44px}
.qbody{margin:6px 0 10px}
.chip.tl{text-decoration:none;white-space:normal;padding:3px 10px;min-height:28px}
.chip.tl:hover{background:rgba(13,36,24,.1)}
.chip.weak{border-style:dashed;box-shadow:none;border:1.5px dashed var(--ink2)}
.qshot{margin:12px 0 0}
.qshot+.qshot{margin-top:16px}
.crop{position:relative;overflow:hidden;background:#fff;border-radius:6px;box-shadow:0 1px 0 rgba(13,36,24,.35),0 6px 14px rgba(13,36,24,.16)}
.crop img{position:absolute;left:0;width:100%;height:auto;display:block}
.crop.full img{position:static}
.qshot figcaption{font-size:13.5px;margin-top:8px;color:var(--ink)}
.qshot figcaption .lnk{display:inline-block;padding:10px 0}
.qshot figcaption .sub{display:block;margin-top:2px;font-size:12.5px;color:var(--ink2)}
.paperlist{display:grid;gap:6px;margin-top:6px}
.paperrow{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:50px;padding:6px 14px;border-radius:10px;background:var(--ticket2);color:var(--ink);text-decoration:none}
.paperrow:hover{background:color-mix(in srgb,var(--ticket2) 82%,var(--ink))}
.paperrow b{font:700 15px var(--mono)}
.paperrow span{font-size:13.5px;color:var(--ink2);text-align:right}
.pagebox{margin-top:12px;overflow:auto;border-radius:6px;background:#fff;box-shadow:0 6px 14px rgba(13,36,24,.16);max-height:80vh}
.pageimg{position:relative;width:calc(100% * var(--z,1))}
.pageimg img{display:block;width:100%;height:auto}
.hl{position:absolute;left:0;right:0;border:1.5px dashed rgba(176,36,26,.65);background:rgba(176,36,26,.04);text-decoration:none}
.hl span{position:absolute;right:4px;top:2px;font:700 11px var(--mono);background:var(--red);color:#fff;border-radius:4px;padding:1px 5px}
.hl.on{border:2.5px solid var(--red);background:rgba(242,178,60,.28)}
.imgfail{padding:18px;font-size:14px;color:var(--ink);background:var(--ticket2);border-radius:6px}
.zoomseg button{min-width:72px}
.cropwrap{border-radius:6px}
.qshot.zoomed .cropwrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.qshot.zoomed .crop{width:230%}
.zoombtn{min-height:44px;margin:8px 10px 0 0}
.qshot figcaption{display:flex;flex-wrap:wrap;align-items:center;gap:0 12px}
.qshot figcaption .sub{flex:0 0 100%}
.qact .lnk{min-width:44px;justify-content:center;padding:0 6px}
.chip.tl{min-height:44px;display:inline-flex;align-items:center;padding:0 12px}
.chip.weak:not(.tl){min-height:28px}
.qshot figcaption .lnk{display:inline-flex;align-items:center;min-height:44px;padding:0}

/* ---------- model answers ---------- */
.ans{margin:12px 0 6px;padding:14px 14px 12px;border-radius:10px;background:var(--paper-hi);box-shadow:inset 0 0 0 1.5px var(--ink2)}
.ans[hidden]{display:none}
.ans-title{font-size:18px;margin:0 0 8px}
.ans .chips{margin-bottom:10px}
.ans-body{font-size:15px;line-height:1.5;color:var(--ink)}
.ans-body>*+*{margin-top:8px}
.ans-body h4{font-size:15px;margin:12px 0 2px}
.ans-body ul,.ans-body ol{padding-left:22px;display:grid;gap:4px}
.ans-body ul{list-style:disc}
.ans-body ol{list-style:decimal}
.ans-body li ul,.ans-body li ol{margin-top:4px}
.ans-body .tbl{overflow-x:auto}
.ans-body table{border-collapse:collapse;font-size:14px;min-width:100%}
.ans-body th,.ans-body td{border:1px solid var(--rule);padding:6px 8px;text-align:left;vertical-align:top}
.ans-body th{background:var(--ticket2)}
.tex.d{display:block;overflow-x:auto;overflow-y:hidden;max-width:100%;padding:2px 0}
.tex{color:var(--ink)}
.figrow{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,340px),1fr));gap:4px 16px;align-items:start;margin:10px 0 12px}
.figrow .fig{margin:0}
.figrow .fig a{width:auto}
.figrow .fig img{width:100%}
.fig{margin:10px 0 12px}
.fig a{display:block;width:fit-content;max-width:100%;margin-inline:auto;border-radius:8px;outline-offset:3px}
.fig img{display:block;width:auto;height:auto;max-width:100%;background:var(--paper-hi);border-radius:8px;padding:4px;box-sizing:border-box}
.fig figcaption{margin:6px auto 0;max-width:560px;text-align:center;font-size:13.5px;line-height:1.4;color:var(--ink2)}
.ans-draw .fig{margin-top:6px}
.ans-box{margin-top:12px;padding:10px 12px;border-radius:8px;background:var(--ticket2);font-size:14.5px}
.ans-box>b{display:block;margin-bottom:4px}
.ans-box.fix{box-shadow:inset 0 0 0 1.5px var(--red)}
.ans-pts{margin-top:14px}
.ans-sub{font-size:16px;margin:0 0 2px}
.pts{display:grid;gap:2px;margin-top:6px}
.pt{display:grid;grid-template-columns:26px 34px minmax(0,1fr);gap:8px;align-items:start;min-height:44px;padding:9px 4px;border-radius:8px;cursor:pointer}
.pt:hover{background:rgba(13,36,24,.06)}
.pt input{-webkit-appearance:none;appearance:none;width:22px;height:22px;margin:0;border:2px solid var(--ink);border-radius:6px;background:var(--ticket);cursor:pointer}
.pt input:checked{background:var(--ink) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3 8.5l3.2 3.2L13 4.8' fill='none' stroke='%23D8E8D3' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/16px no-repeat}
.pt input:focus-visible{outline:2px solid var(--red);outline-offset:2px}
.nb{white-space:nowrap}
.pt .w{font:700 12px/22px var(--mono);background:var(--ink);color:var(--ticket);border-radius:11px;height:22px;text-align:center}
.pt .t{font-size:14.5px;line-height:1.4}
.score-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 12px;margin-top:10px}
.score{font:700 16px var(--mono);color:var(--ink)}
.chip.score{font:700 12px var(--mono);background:var(--ink);color:var(--ticket);box-shadow:none}
.chip.score[hidden]{display:none}

/* the question page, wide screens: the printed question stays on the left while the model answer reads on the right */
@media (min-width:1100px){
  .qpage .qsplit.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:24px;align-items:start}
  .qpage .qsplit.split>.qside{position:sticky;top:16px;max-height:calc(100vh - 32px);overflow:auto;overscroll-behavior:contain}
  .qpage .qsplit.split>.aside>.qact:first-child{margin-top:0 !important}
}
/* an answer that overflows (a very long formula) scrolls inside its panel instead of spilling out */
.ans{overflow-x:auto}