:root {
  --ink: #1b1f24; --muted: #555d66; --line: #c9ced4; --bg: #fff; --panel: #f4f6f8;
  --accent: #0b5cad; --s1: #f2c94c; --s2: #6fa8dc; --s3: #2e8b57; --danger: #b00020;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; line-height: 1.5; color: var(--ink);
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); }
a { color: var(--accent); }
:focus-visible { outline: 3px solid #ffbf47; outline-offset: 2px; }
.skip { position: absolute; left: -999px; } .skip:focus { left: 1rem; top: 1rem; background: #fff; padding: .5rem; z-index: 9; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.banner { background: #fff4ce; border-bottom: 1px solid #e5d38a; padding: .4rem 1rem; font-size: .9rem; }
.top { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; padding: .6rem 1rem; border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; font-size: 1.15rem; text-decoration: none; color: var(--ink); }
.top nav { display: flex; flex-wrap: wrap; gap: .9rem; align-items: center; }
.who { color: var(--muted); font-size: .9rem; }
main { max-width: 72rem; margin: 0 auto; padding: 1rem; }
.foot { border-top: 1px solid var(--line); padding: 1rem; color: var(--muted); font-size: .85rem; }
.sync { display: block; margin-top: .3rem; }
.lead { font-size: 1.1rem; }
button { font: inherit; padding: .35rem .8rem; border: 1px solid var(--accent); background: var(--accent); color: #fff; border-radius: 4px; cursor: pointer; }
button.danger { background: var(--danger); border-color: var(--danger); }
input, textarea { font: inherit; padding: .35rem; border: 1px solid #8a939c; border-radius: 4px; width: 100%; }
input[type=radio], input[type=checkbox] { width: auto; }
.stack { display: grid; gap: .4rem; max-width: 22rem; }
.inline { display: grid; gap: .4rem; max-width: 36rem; margin-bottom: 1rem; }
.map { border-collapse: separate; border-spacing: .5rem; width: 100%; }
.map th[scope=row] { text-align: left; width: 12rem; }
.cellcard { display: grid; gap: .2rem; padding: .8rem; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); text-decoration: none; color: var(--ink); }
.cellcard:hover { border-color: var(--accent); }
.cid { font-weight: 700; } .counts, .progress-text { font-size: .9rem; color: var(--muted); }
.meter { height: .5rem; background: #dde2e7; border-radius: 4px; overflow: hidden; }
.meter span { display: block; height: 100%; width: 0; background: var(--s3); }
.key .dot, .dash td { display: inline-block; }
.dot { width: .8rem; height: .8rem; border-radius: 50%; margin: 0 .2rem 0 .8rem; vertical-align: middle; }
.dot.s1, .s1 { background: var(--s1); } .dot.s2, .s2 { background: var(--s2); } .dot.s3, .s3 { background: var(--s3); color: #fff; }
.status { font-size: .8rem; padding: 0 .4rem; border-radius: 3px; }
.statements { list-style: none; padding: 0; }
.statement { border: 1px solid var(--line); border-radius: 6px; padding: .6rem .8rem; margin-bottom: .6rem; }
.statement p { margin: .3rem 0; }
.sid { font-family: ui-monospace, monospace; font-size: .85rem; color: var(--muted); }
.understand { background: #eef5fc; border-left: 4px solid var(--accent); padding: .2rem 1rem; }
.card { margin-top: .4rem; } .card summary { cursor: pointer; font-weight: 600; }
.quiz fieldset { border: 1px solid var(--line); margin: .5rem 0; } .quiz label { display: block; }
.pending { color: var(--muted); font-style: italic; }
.xlink { font-size: .85rem; color: var(--muted); }
.labbtn { display: inline-block; padding: .3rem .7rem; border: 1px solid var(--accent); border-radius: 4px; text-decoration: none; margin-right: .4rem; }
.crumbs, .ref { color: var(--muted); font-size: .9rem; }
.hint { font-size: .85rem; color: var(--muted); }
table.plain { border-collapse: collapse; width: 100%; } table.plain td, table.plain th { border: 1px solid var(--line); padding: .35rem .5rem; text-align: left; vertical-align: top; }
.log .cellrow th { background: var(--panel); }
.scroll { overflow-x: auto; max-width: 100%; position: relative; }  /* relative: keeps .sr-only cell labels inside the clip */
main, section { min-width: 0; }
table.dash td.seen { min-width: 6rem; white-space: nowrap; font-size: .75rem; } table.dash td.stale { background: #fdf0f2; color: var(--danger); white-space: normal; }
table.dash { border-collapse: collapse; font-size: .8rem; }
table.dash th, table.dash td { border: 1px solid var(--line); padding: .2rem; }
table.dash thead th span { writing-mode: vertical-rl; transform: rotate(180deg); white-space: nowrap; }
table.dash td { display: table-cell; min-width: 1.2rem; }
.logincards { display: flex; flex-wrap: wrap; gap: .5rem; }
.logincard { border: 1px dashed #333; padding: .6rem; width: 15rem; }
.rules li { margin-bottom: .5rem; }
/* labs */
#lab { margin-top: 1rem; }
.result { font-weight: 600; } .result.ok { color: #1e6b3c; } .result.bad { color: var(--danger); }
.evidence { margin-top: 1.5rem; border-top: 2px solid var(--line); padding-top: .5rem; display: grid; gap: .4rem; max-width: 48rem; }
.evidence button { justify-self: start; }
.items { list-style: none; padding: 0; display: grid; gap: .6rem; }
.item { border: 1px solid var(--line); border-radius: 6px; padding: .6rem .8rem; background: #fff; }
.item.right { border-color: var(--s3); background: #eef8f1; } .item.wrong { border-color: var(--danger); background: #fdf0f2; }
.item select { font: inherit; margin-top: .3rem; }
.twocol { display: grid; grid-template-columns: minmax(14rem, 1fr) 2fr; gap: 1rem; }
@media (max-width: 50rem) { .twocol { grid-template-columns: 1fr; } }
.msglist { list-style: none; padding: 0; margin: 0; display: grid; gap: .3rem; }
.msglist button { width: 100%; text-align: left; background: var(--panel); color: var(--ink); border-color: var(--line); }
.msglist button[aria-current="true"] { border-color: var(--accent); outline: 2px solid var(--accent); }
.msglist button .tag { float: right; font-size: .8rem; }
.message { border: 1px solid var(--line); border-radius: 6px; padding: .8rem; }
.message .hdr { font-size: .9rem; color: var(--muted); border-bottom: 1px solid var(--line); padding-bottom: .4rem; margin-bottom: .6rem; }
.message .body { white-space: pre-wrap; }
.fakelink { color: var(--accent); text-decoration: underline; background: none; border: none; padding: 0; }
.urlbar { font-family: ui-monospace, monospace; background: #eceff1; border-radius: 16px; padding: .3rem .8rem; margin-bottom: .6rem; overflow-wrap: anywhere; }
.realurl { font-family: ui-monospace, monospace; background: #fff4ce; padding: .2rem .4rem; overflow-wrap: anywhere; }
.flags label, .choices label { display: block; }
.controls label { display: flex; gap: .5rem; align-items: baseline; padding: .3rem 0; }
.threat.covered { border-color: var(--s3); background: #eef8f1; }
.budget { font-size: 1.1rem; font-weight: 700; }
.plan { counter-reset: step; list-style: none; padding: 0; }
.plan li { counter-increment: step; display: flex; gap: .4rem; align-items: center; border: 1px solid var(--line); border-radius: 6px; padding: .3rem .5rem; margin-bottom: .3rem; }
.plan li::before { content: counter(step) "."; font-weight: 700; width: 1.6rem; }
.plan li span { flex: 1; }
.plan button, .pool button { padding: .15rem .5rem; }
.pool { list-style: none; padding: 0; } .pool li { margin-bottom: .3rem; }
.scene { border: 1px solid var(--line); border-radius: 8px; padding: .8rem; margin-bottom: 1rem; }
.speech { background: var(--panel); border-left: 4px solid #8a939c; padding: .5rem .8rem; font-style: italic; }
#brute { padding-left: 3rem; }
pre.terminal { height: 24rem; overflow-y: auto; margin: 0; }
.cmdrow { display: flex; gap: .4rem; align-items: center; font-family: ui-monospace, monospace; background: #1b1f24; color: #e6edf3; padding: .4rem; border-radius: 4px; margin-top: .3rem; }
.termgrid { display: grid; grid-template-columns: 3fr 2fr; gap: 1rem; align-items: start; }
@media (max-width: 60rem) { .termgrid { grid-template-columns: 1fr; } }
.cmdline { flex: 1; min-width: 10rem; background: transparent; color: #e6edf3; border: 1px solid #555; font-family: ui-monospace, monospace; }
.prompt { color: #8fd18f; overflow-wrap: anywhere; }
.mission.right { border-color: var(--s3); background: #eef8f1; }
meter { width: 100%; height: 1.2rem; }
.meters { display: grid; gap: .3rem; }
.hops { display: flex; flex-wrap: wrap; gap: .5rem; align-items: stretch; list-style: none; padding: 0; }
.hops li { flex: 1 1 10rem; border: 1px solid var(--line); border-radius: 8px; padding: .5rem; background: #fff; }
.hops .seen { font-family: ui-monospace, monospace; overflow-wrap: anywhere; background: var(--panel); padding: .3rem; }
.certview { border: 1px solid var(--line); border-radius: 8px; padding: .6rem; background: #fff; }
.state-bars { display: grid; grid-template-columns: auto 1fr; gap: .2rem .6rem; align-items: center; max-width: 30rem; }
.browser { border: 1px solid var(--line); border-radius: 8px; padding: .6rem; background: var(--panel); }
.sitetabs { display: flex; flex-wrap: wrap; gap: .3rem; margin-bottom: .5rem; }
.sitetabs button { background: #fff; color: var(--ink); border-color: var(--line); }
.sitetabs button[aria-pressed="true"] { background: var(--accent); color: #fff; }
.site { background: #fff; }
pre.source { background: #1b1f24; color: #e6edf3; padding: .6rem; border-radius: 4px; overflow-x: auto; white-space: pre-wrap; }
dialog { max-width: 32rem; border: 2px solid var(--danger); border-radius: 8px; }
.gate { background: #fff4ce; padding: .8rem; border-radius: 6px; }
.board { display: grid; gap: .6rem; }
.aerial { max-width: 26rem; border: 1px solid var(--line); border-radius: 6px; }
.feed { list-style: none; padding: 0; display: grid; gap: .5rem; }
.post { border: 1px solid var(--line); border-radius: 8px; padding: .6rem .8rem; background: #fff; }
.post .who { font-weight: 700; color: var(--ink); font-size: .9rem; }
.filelist { list-style: none; padding: 0; } .filelist li { display: flex; gap: .6rem; align-items: center; padding: .2rem 0; }
.filelist li.deleted span { text-decoration: line-through; color: var(--muted); }
.cipher-out { font-family: ui-monospace, monospace; font-size: 1.1rem; background: var(--panel); padding: .5rem; min-height: 2.2rem; overflow-wrap: anywhere; }
.pigpen svg { stroke: var(--ink); fill: none; stroke-width: 3; }
.pigpen .dot { fill: var(--ink); stroke: none; }
.pigpen { display: flex; flex-wrap: wrap; gap: .3rem; align-items: end; }
.pigkey { display: flex; flex-wrap: wrap; gap: .5rem; } .pigkey figure { margin: 0; text-align: center; font-size: .8rem; }
.task { border: 1px solid var(--line); border-radius: 8px; padding: .8rem; margin-bottom: 1rem; }
@media print {
  .banner, .top nav, .foot, button { display: none !important; }
  main { max-width: none; }
}
#learner-log td:nth-child(-n+2) { white-space: nowrap; }
.teampanel { border: 1px dashed var(--accent); border-radius: 8px; padding: .5rem .8rem; margin: .8rem 0; background: #f6f9fd; }
.teamtoggle { background: #fff; color: var(--accent); }
.teaminputs { display: flex; flex-wrap: wrap; gap: .4rem; } .teaminputs input { width: 10rem; }
.roles { padding-left: 1.2rem; }
.pigs dt { font-weight: 700; margin-top: .5rem; } .pigs dd { margin-left: 1rem; }