/* PlatformEngr Learn: shared styles for every interactive course (rendered by course-app.js).
   Layout, sidebar, module view, Quick look, quiz, graduation. The .map classes style each course's
   progress diagram, which the course page draws (see COURSE_UI.map). */
:root {
  --line-strong: color-mix(in srgb, var(--muted) 45%, transparent);
  --accent-2-soft: color-mix(in srgb, var(--accent-2) 11%, transparent);
  --warn-soft: color-mix(in srgb, var(--warn) 11%, transparent);
  --danger-soft: color-mix(in srgb, var(--danger) 9%, transparent);
  --ok-soft: color-mix(in srgb, var(--ok) 11%, transparent);
  --hdr: 53px;
}
button { font: inherit; color: inherit; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Layout: shared site header is a slim sticky bar; the course sidebar sticks under it */
.layout { display: grid; grid-template-columns: 300px minmax(0, 1fr); min-height: calc(100vh - 110px); }
.sidebar { border-right: 1px solid var(--line); background: var(--surface); padding: 18px 16px 24px; position: sticky; top: var(--hdr); height: calc(100vh - var(--hdr)); overflow-y: auto; }
main { min-width: 0; padding: 32px 32px 56px; scroll-margin-top: 80px; }
main:focus { outline: none; }
.view { max-width: 880px; margin: 0 auto; }
.mbar { display: none; }

/* Sidebar */
.side-controls { display: grid; gap: 10px; margin-bottom: 16px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.side-controls label.lab { font: 700 11px var(--font-head); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); display: block; margin-bottom: 4px; }
.track-select { width: 100%; height: 38px; border-radius: 10px; border: 1px solid var(--line); background: var(--card); color: var(--heading); padding: 0 8px; font: 600 14px var(--font); }
.seg { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: var(--card); }
.seg button { border: 0; background: transparent; padding: 8px 6px; cursor: pointer; font: 600 13px var(--font-head); color: var(--muted); }
.seg button + button { border-left: 1px solid var(--line); }
.seg button[aria-pressed="true"] { background: var(--accent); color: var(--on-accent); }
.progress-head { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.ring { width: 64px; height: 64px; flex: none; }
.ring circle { fill: none; stroke-width: 7; }
.ring .bgc { stroke: var(--surface-2); }
.ring .fgc { stroke: var(--accent); stroke-linecap: round; transition: stroke-dashoffset .6s ease; transform: rotate(-90deg); transform-origin: 50% 50%; }
.ring text { fill: var(--heading); font-size: 15px; font-weight: 700; font-family: var(--font-head); }
.progress-label strong { display: block; font: 700 15px var(--font-head); color: var(--heading); }
.progress-label span { color: var(--muted); font-size: 13px; }
.minimap { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 8px; margin-bottom: 6px; }
.minimap-cap { font-size: 12px; color: var(--muted); margin: 0 0 16px; display: flex; justify-content: space-between; gap: 8px; }
.minimap-cap b { color: var(--accent); font-weight: 700; }
.lvl { margin: 14px 0 4px; font: 700 11px var(--font-head); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.modlist { list-style: none; margin: 0; padding: 0; }
.modlink { display: flex; align-items: center; gap: 10px; width: 100%; text-align: left; padding: 7px 8px; border-radius: 10px; border: 0; background: transparent; cursor: pointer; font-size: 14px; color: var(--text); }
.modlink:hover { background: var(--surface-2); }
.modlink[aria-current="page"] { background: var(--accent-soft); color: var(--heading); font-weight: 600; box-shadow: inset 3px 0 0 var(--accent); }
.modnum { flex: none; width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center; font-size: 11px; font-weight: 700; font-family: var(--mono); background: var(--card); color: var(--muted); border: 1px solid var(--line); }
.modlink.done .modnum { background: var(--ok); color: #fff; border-color: transparent; }
.modlink.done .modnum span { display: none; }
.modlink .tick { display: none; width: 14px; height: 14px; }
.modlink.done .tick { display: block; }
.modtitle { flex: 1; min-width: 0; }
.badges { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; margin-top: 8px; }
.badge { aspect-ratio: 1; border-radius: 12px; display: grid; place-items: center; border: 1px dashed var(--line-strong); color: var(--muted); font-size: 11px; font-weight: 800; font-family: var(--mono); cursor: help; opacity: .6; }
.badge.on { opacity: 1; border: 1px solid transparent; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: var(--on-accent); }
.side-settings { margin-top: 18px; border-top: 1px solid var(--line); padding-top: 12px; }
.side-settings summary { cursor: pointer; display: flex; justify-content: space-between; align-items: baseline; gap: 8px; list-style: none; font: 700 11px var(--font-head); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.side-settings summary::-webkit-details-marker { display: none; }
.side-settings summary::after { content: "+"; font-size: 15px; }
.side-settings[open] summary::after { content: "−"; }
.side-settings summary small { margin-left: auto; font: 500 12px var(--font); letter-spacing: 0; text-transform: none; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 150px; }
.side-settings .side-controls { margin: 12px 0 0; padding: 0; border: 0; }
.linkbtn { background: none; border: 0; color: var(--muted); font-size: 13px; cursor: pointer; padding: 4px 0; text-decoration: underline; text-underline-offset: 3px; }
.linkbtn:hover { color: var(--danger); }

/* Generic cards & bits */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.eyebrow { font: 700 12px var(--font-head); letter-spacing: .08em; text-transform: uppercase; color: var(--accent); margin: 0 0 6px; }
.muted { color: var(--muted); }
.btn { min-height: 44px; padding: 0 20px; justify-content: center; font-size: 15px; }
.btn svg { width: 18px; height: 18px; }
.chip { display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px; border-radius: 999px; font-size: 13px; background: var(--surface); color: var(--muted); border: 1px solid var(--line); white-space: nowrap; }
.chip.accent { color: var(--accent); background: var(--accent-soft); border-color: transparent; font-weight: 600; }

/* Hero */
.hero { padding: 8px 0 8px; }
.hero h1 { font-size: clamp(28px, 4.6vw, 44px); margin: 8px 0 14px; font-weight: 700; }
.hero h1 .grad { background: linear-gradient(90deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .lede { font-size: 18px; color: var(--text); max-width: 640px; margin: 0 0 22px; }
.track-picker { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 10px; margin: 12px 0 18px; border: 0; padding: 0; min-width: 0; }
.track-picker legend { font: 700 14px var(--font-head); color: var(--heading); margin-bottom: 8px; padding: 0; }
.track-picker.paths { margin-top: 0; }
.track-opt { position: relative; }
.track-opt input { position: absolute; opacity: 0; inset: 0; pointer-events: none; }
.track-opt label { display: block; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--line); background: var(--card); cursor: pointer; height: 100%; }
.track-opt label b { display: block; font: 700 15px var(--font-head); color: var(--heading); }
.track-opt label span { font-size: 13px; color: var(--muted); }
.track-opt label:hover { border-color: var(--accent); }
.track-opt input:checked + label { border-color: var(--accent); background: var(--accent-soft); box-shadow: 0 0 0 1px var(--accent) inset; }
.track-opt input:focus-visible + label { outline: 3px solid var(--accent); outline-offset: 2px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 28px; align-items: center; }
.hero-art { padding: 12px; }
.origin { margin-top: 26px; padding: 12px 16px; border-left: 3px solid var(--accent-2); background: var(--accent-2-soft); border-radius: 0 12px 12px 0; font-size: 14px; color: var(--muted); }
.levels-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 12px; margin-top: 28px; }
.levels-grid .card { padding: 16px; box-shadow: none; }
.levels-grid h3 { margin: 4px 0 8px; font-size: 16px; }
.levels-grid ol { margin: 0; padding-left: 18px; font-size: 14px; color: var(--muted); }

/* Module */
.crumbs { font-size: 13px; color: var(--muted); display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.mod-h1 { font-size: clamp(26px, 4vw, 36px); margin: 6px 0 10px; }
.meta { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.where { font-size: 14px; color: var(--muted); margin: 0 0 18px; }
.goal { display: flex; gap: 12px; align-items: flex-start; background: var(--accent-soft); border-radius: var(--radius); padding: 14px 16px; margin-bottom: 20px; color: var(--heading); }
.goal svg { flex: none; width: 22px; height: 22px; color: var(--accent); margin-top: 2px; }
.goal p { margin: 0; }
.sum { background: var(--accent-soft); border-radius: var(--radius); padding: 14px 18px 16px; margin-bottom: 20px; color: var(--heading); }
.sum h2 { font-size: 13px; letter-spacing: .06em; text-transform: uppercase; color: var(--accent); margin: 0 0 8px; }
.sum dl { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 0; }
.sum dt { font-weight: 700; }
.sum dd { margin: 0; }
@media (max-width: 640px) { .sum dl { grid-template-columns: 1fr; gap: 0; } .sum dd { margin-bottom: 8px; } }
section.block { margin: 32px 0; }
section.block > h2 { font-size: 20px; margin: 0 0 12px; display: flex; align-items: center; gap: 10px; }
.diagram-card { padding: 14px; }
.diagram-card .map { max-width: 620px; margin: 0 auto; }
.diagram-card figcaption { font-size: 13px; color: var(--muted); padding: 6px 6px 0; display: flex; justify-content: space-between; gap: 8px; flex-wrap: wrap; }
.concepts { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.concept { padding: 16px; box-shadow: none; }
.concept h3 { font-size: 15px; margin: 0 0 6px; color: var(--accent); }
.concept p { margin: 0; font-size: 14px; color: var(--muted); }
.steps { list-style: none; padding: 0; margin: 0; }
.step { position: relative; padding: 16px 16px 16px 56px; margin-bottom: 12px; box-shadow: none; }
.step.checked { border-color: color-mix(in srgb, var(--ok) 55%, transparent); }
.step-check { position: absolute; left: 14px; top: 16px; width: 28px; height: 28px; border-radius: 8px; border: 2px solid var(--line-strong); background: var(--card); cursor: pointer; display: grid; place-items: center; padding: 0; }
.step-check svg { width: 16px; height: 16px; opacity: 0; transform: scale(.4); transition: .2s; color: #fff; }
.step.checked .step-check { background: var(--ok); border-color: var(--ok); }
.step.checked .step-check svg { opacity: 1; transform: scale(1); }
.step h3 { font-size: 16px; margin: 0 0 4px; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.step p { margin: 0 0 10px; color: var(--muted); font-size: 15px; }
.trk { font-size: 11px; font-family: var(--mono); padding: 1px 7px; border-radius: 6px; background: var(--accent-2-soft); color: var(--accent-2); font-weight: 600; }
.code { position: relative; background: var(--code-bg); border-radius: 12px; border: 1px solid color-mix(in srgb, var(--code-fg) 14%, transparent); margin: 8px 0 0; }
.code pre { margin: 0; padding: 14px 16px; padding-right: 76px; overflow-x: auto; font-family: var(--mono); font-size: 13.5px; line-height: 1.6; color: var(--code-fg); tab-size: 2; }
.code pre code { background: none; padding: 0; border-radius: 0; font-size: inherit; color: inherit; overflow-wrap: normal; }
.code pre .c { color: var(--code-comment); }
.code .copy { position: absolute; top: 8px; right: 8px; height: 30px; padding: 0 10px; border-radius: 8px; border: 1px solid color-mix(in srgb, var(--code-fg) 30%, transparent); background: color-mix(in srgb, var(--code-fg) 10%, var(--code-bg)); color: var(--code-fg); font-size: 12px; cursor: pointer; font-family: var(--font); }
.code .copy:hover { border-color: var(--code-fg); }
.code .copy.ok { background: #34d399; color: #062a26; border-color: transparent; }
.break { border-color: color-mix(in srgb, var(--danger) 40%, transparent); background: linear-gradient(180deg, var(--danger-soft), transparent 70%), var(--card); box-shadow: none; }
.break h2 { color: var(--danger); }
.break .fix { margin-top: 12px; font-size: 14px; }
.break .fix summary { cursor: pointer; font-weight: 600; color: var(--heading); }
.toggle-row { display: flex; align-items: center; gap: 10px; margin-top: 14px; font-size: 14px; flex-wrap: wrap; }
.quiz-q { margin-bottom: 18px; }
.quiz-q fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }
.quiz-q legend { font-weight: 600; color: var(--heading); margin-bottom: 8px; padding: 0; }
.opts { display: grid; gap: 8px; }
.opt { text-align: left; padding: 10px 14px; border-radius: 10px; border: 1px solid var(--line); background: var(--card); color: var(--text); cursor: pointer; font-size: 15px; line-height: 1.45; }
.opt:hover:not([disabled]) { border-color: var(--accent); }
.opt.right { border-color: var(--ok); background: var(--ok-soft); }
.opt.wrong { border-color: var(--danger); background: var(--danger-soft); animation: shake .35s; }
.opt[disabled] { cursor: default; }
.why { font-size: 14px; margin-top: 8px; padding: 8px 12px; border-radius: 10px; background: var(--surface); }
.why.good { color: var(--ok); }
.why.bad { color: var(--danger); }
.why span { color: var(--muted); }
.note { display: flex; gap: 14px; padding: 16px 18px; border-radius: var(--radius); background: var(--warn-soft); border: 1px solid color-mix(in srgb, var(--warn) 35%, transparent); }
.note svg { flex: none; width: 22px; height: 22px; color: var(--warn); margin-top: 2px; }
.note p { margin: 0; }
.note b { color: var(--warn); }
.keepalive { border-radius: var(--radius); background: var(--warn-soft); border: 1px solid color-mix(in srgb, var(--warn) 35%, transparent); }
.keepalive summary { display: flex; align-items: center; gap: 12px; padding: 10px 16px; cursor: pointer; list-style: none; }
.keepalive summary::-webkit-details-marker { display: none; }
.keepalive summary svg { flex: none; width: 20px; height: 20px; color: var(--warn); }
.keepalive summary b { color: var(--warn); flex: 1; }
.keepalive .ka-toggle { flex: none; width: 8px; height: 8px; border: solid var(--warn); border-width: 0 2px 2px 0; transform: rotate(45deg); transition: transform .15s; }
.keepalive[open] .ka-toggle { transform: rotate(-135deg); }
.keepalive summary:focus-visible { outline: 2px solid var(--warn); outline-offset: 2px; border-radius: var(--radius); }
.keepalive > p { margin: 0; padding: 0 16px 14px 48px; }
.deep { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.complete-bar { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; justify-content: space-between; padding: 18px 20px; }
.mpager { display: flex; justify-content: space-between; gap: 12px; margin-top: 18px; flex-wrap: wrap; }
.mpager .btn { flex: 1 1 200px; justify-content: space-between; border-radius: 14px; }
.mpager .btn small { display: block; font-weight: 400; color: var(--muted); font-size: 12px; }
.mpager .btn .t { text-align: left; min-width: 0; }
.mpager .next .t { text-align: right; margin-left: auto; }
.mpager .btn.primary small { color: inherit; opacity: .85; }
.kbd-hint { font-size: 13px; color: var(--muted); text-align: center; margin-top: 18px; }
kbd { font-family: var(--mono); font-size: 12px; padding: 1px 6px; border-radius: 6px; border: 1px solid var(--line-strong); background: var(--surface); color: var(--heading); }
.notice { padding: 12px 16px; border-radius: 12px; background: var(--accent-2-soft); font-size: 14px; margin-bottom: 18px; }

/* Progress map SVG (drawn for a white background; every colour comes from tokens) */
.map { width: 100%; height: auto; display: block; }
.map text { font-family: var(--font); fill: var(--heading); }
.map .t-muted { fill: var(--muted); }
.map .mono { font-family: var(--mono); }
.map .node { fill: var(--surface); stroke: var(--line-strong); stroke-width: 1.2; }
.map .hubbox { fill: var(--accent-soft); stroke: var(--accent); stroke-width: 1.6; }
.map .spoke { fill: var(--surface); stroke: var(--accent-2); stroke-width: 1.4; }
.map .ghost { fill: none; stroke: var(--line-strong); stroke-dasharray: 5 5; }
.map .tile { fill: var(--accent); }
.map .tile2 { fill: var(--accent); opacity: .65; }
.map .proj { fill: none; stroke: var(--accent); stroke-dasharray: 3 3; opacity: .8; }
.map .link { fill: none; stroke: var(--accent); stroke-width: 1.6; }
.map .flow { fill: none; stroke: var(--accent); stroke-width: 1.6; stroke-dasharray: 6 5; animation: flow 1.4s linear infinite; }
.map .pipe { fill: none; stroke: var(--accent-2); stroke-width: 1.8; stroke-dasharray: 2 6; stroke-linecap: round; animation: flow 1s linear infinite; }
.map .chipr { fill: var(--card); stroke: var(--line-strong); }
.map .chipt { font-size: 8.5px; font-family: var(--mono); fill: var(--heading); }
.map .ten { fill: var(--accent-soft); stroke: var(--accent); stroke-dasharray: 3 2; }
.map .wave { fill: var(--warn-soft); stroke: var(--warn); }
.map .wavet { fill: var(--warn); font-size: 8.5px; font-weight: 700; font-family: var(--mono); }
.map .lock { fill: var(--ok); }
.map .lockbg { fill: var(--card); stroke: var(--ok); stroke-width: 1.2; }
.map .prov { fill: var(--accent-2); }
.map .provt { fill: var(--on-accent); font-size: 8.5px; font-weight: 800; font-family: var(--mono); }
.map .bar-bg { fill: var(--card); stroke: var(--line-strong); }
.map .bar { fill: var(--warn); animation: canary 4s ease-in-out infinite; transform-box: fill-box; transform-origin: left; }
.map .seal { fill: url(#sealgrad); }
.map .hi { animation: pop .7s cubic-bezier(.2,1.4,.4,1) both, glow 2.4s ease-in-out .7s 2; transform-box: fill-box; transform-origin: center; }
.map .empty { font-size: 13px; fill: var(--muted); }
@keyframes flow { to { stroke-dashoffset: -22; } }
@keyframes pop { from { opacity: 0; transform: scale(.6); } to { opacity: 1; transform: scale(1); } }
@keyframes glow { 50% { filter: drop-shadow(0 0 6px var(--accent)); } }
@keyframes canary { 0% { transform: scaleX(.2); } 35% { transform: scaleX(.2); } 50% { transform: scaleX(.5); } 75% { transform: scaleX(.5); } 90%, 100% { transform: scaleX(1); } }
@keyframes shake { 25% { transform: translateX(-4px); } 75% { transform: translateX(4px); } }

/* Graduation */
.grad-hero { text-align: center; padding: 8px 0 12px; }
.grad-hero h1 { font-size: clamp(26px, 4.6vw, 40px); margin: 6px 0 10px; }
.stats { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 12px; margin: 18px 0; }
.stat { text-align: center; padding: 16px; box-shadow: none; }
.stat b { display: block; font: 700 28px var(--font-head); color: var(--accent); }
.stat span { font-size: 13px; color: var(--muted); }
.cert { position: relative; padding: 36px 28px; text-align: center; border-radius: 18px; background: var(--card); border: 2px solid transparent; background-image: linear-gradient(var(--card), var(--card)), linear-gradient(135deg, var(--accent), var(--accent-2)); background-origin: border-box; background-clip: padding-box, border-box; }
.cert .eyebrow { letter-spacing: .2em; }
.cert h2 { font: 500 15px var(--font); color: var(--muted); margin: 14px 0 4px; }
.cert .who { font: 700 clamp(26px, 5vw, 38px) var(--font-head); color: var(--heading); margin: 4px 0 6px; min-height: 1.2em; overflow-wrap: anywhere; }
.cert p { margin: 6px 0; }
.cert .sig { display: flex; justify-content: space-between; gap: 16px; margin-top: 26px; font-size: 13px; color: var(--muted); flex-wrap: wrap; }
.cert .sig div { border-top: 1px solid var(--line-strong); padding-top: 6px; min-width: 160px; flex: 1; }
.name-row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin: 14px 0; }
.name-row input { flex: 1 1 220px; min-height: 44px; border-radius: 12px; border: 1px solid var(--line-strong); background: var(--card); color: var(--heading); padding: 0 14px; font: inherit; }
.checklist { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.checklist label { display: flex; gap: 10px; align-items: flex-start; padding: 10px 12px; border-radius: 10px; background: var(--surface); border: 1px solid var(--line); cursor: pointer; font-size: 15px; color: var(--heading); }
.checklist input { margin-top: 4px; accent-color: var(--accent); width: 16px; height: 16px; flex: none; }
.checklist small { display: block; color: var(--muted); font-size: 13px; }
.author { display: flex; gap: 16px; align-items: flex-start; }
.avatar { flex: none; width: 52px; height: 52px; border-radius: 50%; display: grid; place-items: center; font: 800 16px var(--font-head); background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: var(--on-accent); }
.author h3 { margin: 0 0 4px; font-size: 16px; }
.author p { margin: 0 0 8px; font-size: 14px; color: var(--muted); }
.links-row { display: flex; gap: 14px; flex-wrap: wrap; font-size: 14px; }
.quiet { font-size: 14px; color: var(--muted); text-align: center; margin: 28px auto 0; max-width: 560px; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* Toast + confetti */
.toasts { position: fixed; bottom: 16px; right: 16px; left: 16px; display: flex; flex-direction: column; align-items: flex-end; gap: 8px; z-index: 80; pointer-events: none; }
.toast { pointer-events: auto; max-width: 360px; background: var(--card); color: var(--text); border: 1px solid var(--accent); box-shadow: var(--shadow); border-radius: 12px; padding: 12px 14px; font-size: 14px; animation: toastin .35s ease both; }
.toast b { color: var(--accent); display: block; }
@keyframes toastin { from { opacity: 0; transform: translateY(12px); } }
.confetti { position: fixed; inset: 0; pointer-events: none; z-index: 75; overflow: hidden; }
.confetti i { position: absolute; top: -12px; width: 8px; height: 12px; border-radius: 2px; animation: fall linear forwards; }
@keyframes fall { to { transform: translate3d(var(--dx), 105vh, 0) rotate(var(--rot)); opacity: .9; } }
.scrim { display: none; }

/* Responsive */
@media (max-width: 1100px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-art { order: -1; max-width: 520px; }
  .levels-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 900px) {
  .layout { grid-template-columns: minmax(0, 1fr); }
  .mbar { display: flex; gap: 8px; align-items: center; justify-content: space-between; padding: 10px 16px; border-bottom: 1px solid var(--line); background: var(--surface); }
  .mbar .btn { min-height: 38px; padding: 0 14px; font-size: 14px; }
  .sidebar { position: fixed; top: 0; left: 0; bottom: 0; height: auto; width: min(320px, 88vw); z-index: 70; transform: translateX(-102%); transition: transform .25s ease; box-shadow: var(--shadow); visibility: hidden; }
  body.nav-open .sidebar { transform: none; visibility: visible; }
  body.nav-open .scrim { display: block; position: fixed; inset: 0; background: rgba(15,22,38,.5); z-index: 65; }
  main { padding: 20px 16px 40px; }
  .two-col { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .levels-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
  .step { padding: 14px 12px 14px 50px; }
  .step-check { left: 12px; }
  .code pre { font-size: 12.5px; }
  .cert { padding: 28px 16px; }
  .track-picker { grid-template-columns: 1fr; }
}
@media print {
  body * { visibility: hidden; }
  .cert, .cert * { visibility: visible; }
  .cert { position: absolute; left: 0; top: 0; width: 100%; }
  .pe-header, .pe-footer, .sidebar, .skip { display: none; }
}

/* Setup (profile) */
.setup { display: grid; gap: 8px; }
.setup label { font: 700 11px var(--font-head); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); display: grid; gap: 4px; }
.setup input { height: 36px; border-radius: 10px; border: 1px solid var(--line); background: var(--card); color: var(--heading); padding: 0 10px; font: 500 14px var(--mono); text-transform: none; letter-spacing: 0; min-width: 0; }
.setup input:focus-visible { outline: 3px solid var(--accent); outline-offset: 1px; }
.setup .hint { font-size: 12px; color: var(--muted); margin: 0; }
.setup.wide { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 10px 0 4px; }
.setup.wide label { font-size: 12px; }
.setup.wide input { height: 42px; font-size: 15px; }
.ph { color: var(--warn); font-weight: 600; }
/* Before you start (home) */
.startbox { margin-top: 28px; padding: 24px 24px 20px; scroll-margin-top: 80px; }
.startbox h2 { font-size: 24px !important; margin: 0 0 6px !important; display: block !important; }
.startbox .sb-lede { margin: 0 0 18px; }
.sb-row { display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 14px; padding: 16px 0; border-top: 1px solid var(--line); }
.sb-n { width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; background: var(--accent); color: var(--on-accent); font: 700 14px var(--font-head); }
.sb-body b { font: 700 16px var(--font-head); color: var(--heading); }
.sb-body p { margin: 2px 0 10px; font-size: 14px; color: var(--muted); }
.sb-body input { width: 100%; max-width: 420px; height: 44px; border-radius: 10px; border: 1px solid var(--line-strong); background: var(--card); color: var(--heading); padding: 0 12px; font: 500 15px var(--mono); }
.sb-body input:focus-visible { outline: 3px solid var(--accent); outline-offset: 1px; }
.sb-body .track-picker { margin: 0; }
.sb-go { display: flex; gap: 16px; align-items: center; justify-content: space-between; flex-wrap: wrap; padding-top: 16px; border-top: 1px solid var(--line); }
.sb-status { margin: 0; flex: 1 1 320px; font-size: 14px; color: var(--muted); }
.sb-status.ok b { color: var(--ok); }
.sb-status code { overflow-wrap: anywhere; }
/* Pieces (home) */
.pieces { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin: 18px 0 8px; }
.piece { padding: 16px; box-shadow: none; }
.piece h3 { margin: 0 0 4px; font-size: 16px; }
.piece p { margin: 0 0 8px; font-size: 14px; color: var(--muted); }
.piece a { font-size: 14px; font-weight: 600; }
/* Role chip */
.chip.role-platform { color: var(--accent); }
.chip.role-product { color: var(--accent-2); }
/* Journey strip */
.journey { display: grid; grid-template-columns: repeat(var(--jn, 8), minmax(0, 1fr)); gap: 4px; margin: 0 0 20px; padding: 0; list-style: none; }
.journey li { position: relative; min-width: 0; overflow-wrap: anywhere; padding: 8px 6px 6px; border-radius: 8px; background: var(--surface); border: 1px solid var(--line); font-size: 11.5px; line-height: 1.25; color: var(--muted); }
.journey li b { display: block; font: 700 12px var(--font-head); color: var(--muted); }
.journey li.on { background: var(--accent-soft); border-color: var(--accent); color: var(--text); }
.journey li.on b { color: var(--accent); }
.journey-cap { font-size: 13px; color: var(--muted); margin: 0 0 6px; }
/* Why */
.why-p { font-size: 16px; margin: 0 0 20px; }
/* Files */
.files { display: grid; gap: 10px; }
.file { padding: 14px 16px; box-shadow: none; }
.file-h { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; align-items: baseline; }
.file-h code { font-size: 14px; font-weight: 600; color: var(--heading); background: none; padding: 0; }
.file-links { display: flex; gap: 12px; font-size: 13px; }
.file p { margin: 4px 0 6px; font-size: 14px; color: var(--muted); }
.file-top { display: flex; gap: 12px; align-items: flex-start; justify-content: space-between; flex-wrap: wrap; }
.file-top > div { flex: 1 1 260px; min-width: 0; }
.peek-btn { min-height: 36px; padding: 0 14px; font-size: 14px; flex: none; }
.file ol.marks { list-style: none; margin: 4px 0 0; padding: 0; font-size: 14px; display: grid; gap: 3px; }
.file ol.marks li { display: flex; gap: 8px; align-items: baseline; }
/* Quick look dialog */
dialog.peek { width: min(1040px, calc(100vw - 24px)); max-height: calc(100vh - 32px); padding: 0; border: 1px solid var(--line); border-radius: 16px; background: var(--card); color: var(--text); box-shadow: 0 24px 60px rgba(0,0,0,.35); overflow: hidden; }
dialog.peek[open] { display: flex; flex-direction: column; }
dialog.peek::backdrop { background: rgba(15,22,38,.55); }
.pk-head { padding: 16px 20px 12px; border-bottom: 1px solid var(--line); }
.pk-title { display: flex; gap: 10px; align-items: center; justify-content: space-between; flex-wrap: wrap; }
.pk-title code { font: 700 15px var(--mono); color: var(--heading); background: none; padding: 0; overflow-wrap: anywhere; }
.pk-close { border: 1px solid var(--line); background: var(--surface); border-radius: 10px; height: 34px; padding: 0 12px; cursor: pointer; font-weight: 600; }
.pk-why { margin: 6px 0 10px; font-size: 15px; color: var(--heading); }
.pk-bar { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; font-size: 13px; }
.pk-tools { margin-left: auto; display: flex; gap: 12px; align-items: center; }
.pk-tools label { display: inline-flex; gap: 6px; align-items: center; cursor: pointer; color: var(--muted); }
.pk-body { overflow: auto; flex: 1; background: var(--code-bg); }
.pk-body.is-md { background: var(--card); }
.pk-code { font: 13px/1.65 var(--mono); color: var(--code-fg); padding: 8px 0 16px; min-width: max-content; }
.pk-ln { position: relative; display: grid; grid-template-columns: 76px 1fr; white-space: pre; padding-right: 20px; }
.pk-ln .n { grid-column: 1; grid-row: 1; color: var(--code-comment); text-align: right; padding-right: 14px; user-select: none; opacity: .6; }
.pk-ln .tx { grid-column: 2; }
.pk-ln .bd { z-index: 2; position: absolute; left: 8px; top: 0; bottom: 0; display: flex; align-items: center; gap: 3px; }
.pk-ln.flash, .pk-md .flash { animation: pkflash 1.4s ease-out; }
@keyframes pkflash { from { background: color-mix(in srgb, var(--accent) 30%, transparent); } to { background: transparent; } }
.t-c { color: var(--code-comment); font-style: italic; } .t-s { color: #a5e3a0; } .t-n { color: #f6b17a; } .t-k { color: #c4a7f5; }
.t-p { color: #7cc4ff; } .t-v { color: #ffd479; } .t-t { color: #ff9ec1; } .t-f { color: #6ee7d8; }
/* numbered circles + tooltip */
.mk { position: relative; flex: none; width: 20px; height: 20px; padding: 0; border-radius: 50%; display: inline-grid; place-items: center; border: 0; cursor: help;
  background: linear-gradient(145deg, color-mix(in srgb, var(--accent) 80%, #fff), var(--accent)); color: var(--on-accent); font: 700 11px/1 var(--font-head);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 28%, transparent), 0 1px 3px rgba(0,0,0,.35); transition: transform .12s, box-shadow .12s; }
.mk:hover, .mk:focus-visible { transform: scale(1.14); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 38%, transparent), 0 2px 6px rgba(0,0,0,.4); outline: none; }
button.mk { cursor: pointer; width: 26px; height: 26px; font-size: 12px; }
.tip::after { content: attr(data-tip); position: absolute; z-index: 20; left: calc(100% + 10px); top: 50%; transform: translateY(-50%); width: max-content; max-width: min(320px, 70vw);
  padding: 7px 11px; border-radius: 9px; background: #0b1020; color: #eef2fb; border: 1px solid rgba(255,255,255,.18); box-shadow: 0 8px 22px rgba(0,0,0,.4);
  font: 500 13px/1.4 var(--font); text-align: left; white-space: normal; pointer-events: none; opacity: 0; visibility: hidden; transition: opacity .12s; }
.tip.tip-down::after { left: 0; top: calc(100% + 8px); transform: none; }
.tip:hover::after, .tip:focus-visible::after { opacity: 1; visibility: visible; }
/* rendered markdown */
.pk-md { max-width: 880px; padding: 24px 32px 36px 60px; font: 15.5px/1.7 var(--font); color: var(--text); }
.pk-md [data-l] { position: relative; }
.pk-md .bd { position: absolute; left: -44px; top: .2em; display: flex; gap: 3px; line-height: 1; }
.pk-md li > .bd { left: -62px; } .pk-md td > .bd { left: -48px; top: .5em; } .pk-md blockquote > .bd { left: -48px; }
.pk-md h1, .pk-md h2, .pk-md h3, .pk-md h4 { font-family: var(--font-head); color: var(--heading); line-height: 1.25; margin: 1.5em 0 .5em; }
.pk-md h1 { font-size: 1.7em; margin-top: 0; } .pk-md h2 { font-size: 1.35em; padding-bottom: .3em; border-bottom: 1px solid var(--line); } .pk-md h3 { font-size: 1.12em; } .pk-md h4 { font-size: 1em; }
.pk-md p, .pk-md ul, .pk-md ol, .pk-md blockquote, .pk-md pre, .pk-md .mdtable { margin: 0 0 1em; }
.pk-md ul, .pk-md ol { padding-left: 1.5em; } .pk-md li { margin: .25em 0; } .pk-md li > ul, .pk-md li > ol { margin: .25em 0 0; }
.pk-md blockquote { padding: 4px 16px; border-left: 4px solid var(--accent); background: var(--accent-soft); border-radius: 0 8px 8px 0; color: var(--heading); } .pk-md blockquote > :last-child { margin-bottom: 0; }
.pk-md hr { border: 0; border-top: 1px solid var(--line); margin: 1.6em 0; }
.pk-md pre.mdcode { position: relative; background: var(--code-bg); color: var(--code-fg); border-radius: 10px; padding: 14px 16px; overflow-x: auto; font: 13px/1.6 var(--mono); }
.pk-md pre.mdcode[data-lang]::before { content: attr(data-lang); position: absolute; top: 6px; right: 10px; font: 600 11px var(--mono); color: var(--code-comment); text-transform: uppercase; letter-spacing: .05em; }
.pk-md .mdtable { overflow-x: auto; } .pk-md table { border-collapse: collapse; font-size: 14.5px; min-width: 60%; }
.pk-md th, .pk-md td { padding: 7px 12px; border: 1px solid var(--line); text-align: left; vertical-align: top; } .pk-md th { background: var(--surface); color: var(--heading); } .pk-md tbody tr:nth-child(even) { background: color-mix(in srgb, var(--surface) 55%, transparent); }
.pk-md .chk { display: inline-block; width: 13px; height: 13px; margin-right: 8px; border: 2px solid var(--line-strong); border-radius: 4px; vertical-align: -1px; } .pk-md .chk.on { background: var(--ok); border-color: var(--ok); }
.pk-msg { padding: 24px; color: var(--code-fg); font: 14px var(--font); }
.pk-foot { padding: 10px 20px; border-top: 1px solid var(--line); font-size: 13px; color: var(--muted); display: flex; gap: 14px; flex-wrap: wrap; justify-content: space-between; }
@media (max-width: 700px) { #pkChips { display: none !important; } .pk-head { padding: 12px 14px 10px; } .pk-why { font-size: 14px; margin: 4px 0 6px; } .pk-foot > span:first-child { display: none; } .pk-ln { grid-template-columns: 64px 1fr; } .pk-md { padding: 18px 16px 28px 52px; } }
.step .go { display: inline-flex; margin: 10px 0 2px; min-height: 36px; font-size: 14px; padding: 0 14px; }
/* Simplified */
.simpl { padding: 14px 16px; border-radius: var(--radius); border: 1px dashed var(--line-strong); background: var(--surface); }
.simpl h2 { font-size: 15px !important; margin: 0 0 6px !important; color: var(--heading); }
.simpl ul { margin: 0; padding-left: 18px; font-size: 14px; color: var(--muted); }
.simpl li + li { margin-top: 6px; }
/* Five questions */
.five { display: grid; grid-template-columns: max-content 1fr; gap: 6px 14px; margin: 12px 0 0; font-size: 14px; }
.five dt { font-weight: 700; color: var(--heading); }
.five dd { margin: 0; color: var(--text); }
.step .five { background: var(--surface); padding: 10px 12px; border-radius: 10px; }
@media (max-width: 900px) {
  .journey { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .pieces, .setup.wide { grid-template-columns: 1fr; }
  .five { grid-template-columns: 1fr; }
  .five dd { margin-bottom: 6px; }
}
/* Hints, solutions and acceptance checks (debug labs and challenges) */
.step details.hint { margin: 10px 0 0; border: 1px solid var(--line); border-radius: 10px; padding: 8px 12px; background: var(--surface); font-size: 14px; }
.step details.hint summary { cursor: pointer; font-weight: 600; color: var(--heading); }
.step details.hint p { margin: 8px 0 2px; color: var(--text); }
.step details.hint .five { background: none; padding: 0; }
.step details.solution summary { color: var(--accent); }
.accept { margin: 4px 0 10px; padding: 10px 14px; border-radius: 10px; background: var(--ok-soft); border: 1px solid color-mix(in srgb, var(--ok) 35%, transparent); font-size: 14px; }
.accept b { color: var(--ok); font-family: var(--font-head); }
.accept ul { margin: 4px 0 0; padding-left: 18px; color: var(--heading); }
.accept li + li { margin-top: 3px; }
.trk.lab { background: var(--warn-soft); color: var(--warn); }
.step.challenge { border-left: 3px solid var(--warn); }
.files-intro { margin: 0 0 10px; padding: 12px 16px; border-radius: 12px; background: var(--accent-soft); color: var(--heading); font-size: 15px; }
/* "What do these commands do?" and what a file is */
details.explain { margin: 6px 0 0; font-size: 14px; }
details.explain summary { cursor: pointer; color: var(--muted); font-size: 13px; width: fit-content; }
details.explain summary:hover { color: var(--accent); }
details.explain ul { list-style: none; margin: 6px 0 0; padding: 10px 12px; border-radius: 10px; background: var(--surface); display: grid; gap: 6px; }
details.explain li { display: grid; grid-template-columns: minmax(120px, max-content) 1fr; gap: 10px; align-items: baseline; color: var(--text); }
details.explain li code { white-space: nowrap; }
@media (max-width: 560px) { details.explain li { grid-template-columns: 1fr; gap: 2px; } }
.edit-what { margin: 4px 0 0; font-size: 13.5px; color: var(--muted); }
.explain-pref { display: flex; gap: 8px; align-items: center; font-size: 13px; color: var(--text); cursor: pointer; }
.explain-pref input { accent-color: var(--accent); }
/* File edits, made in the learner's own editor */
.edit { margin: 10px 0 0; border: 1px solid var(--line); border-radius: 12px; padding: 10px 12px 12px; background: var(--surface); }
.edit-h { display: flex; flex-wrap: wrap; gap: 6px; align-items: baseline; font-size: 14px; color: var(--heading); }
.edit-v { font: 700 12px var(--font-head); letter-spacing: .04em; text-transform: uppercase; color: var(--accent-2); }
.edit-v::before { content: "\270E  "; }
.edit-h code { font-weight: 600; }
.edit-w { color: var(--muted); }
.edit-w code { font-weight: 400; }
.step .edit-n, .edit-n { margin: 6px 0 0; font-size: 14px; color: var(--muted); }
.edit .code { margin-top: 8px; }
.code.diff .del { color: #ff9ea8; }
.code.diff .ins { color: #8ee6a4; }
/* Comparison tables inside Concepts */
.ctable { margin-top: 14px; padding: 16px; box-shadow: none; }
.ctable h3 { margin: 0 0 10px; font-size: 15px; color: var(--accent); }
.ctable-scroll { overflow-x: auto; }
.ctable table { border-collapse: collapse; width: 100%; font-size: 14px; min-width: 560px; }
.ctable th, .ctable td { text-align: left; vertical-align: top; padding: 8px 10px; border-bottom: 1px solid var(--line); }
.ctable thead th { font: 700 12px var(--font-head); letter-spacing: .04em; text-transform: uppercase; color: var(--muted); }
.ctable tbody th { color: var(--heading); font-weight: 700; white-space: nowrap; }
.next-course p:last-child { margin-bottom: 0; }

/* Break it on purpose: numbered parts */
.break .brk-learn{margin:0 0 14px;padding:10px 14px;border-left:3px solid var(--accent);background:var(--accent-soft);border-radius:6px}
.break .brk-h{display:flex;align-items:center;gap:10px;font-size:17px;margin:22px 0 8px}
.break .brk-h span{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:50%;background:var(--accent);color:var(--on-accent, #fff);font-size:13px;font-family:var(--mono);flex:none}
.brk-symptom{padding:10px 14px;border:1px solid var(--line);background:var(--surface);border-radius:8px}
.brk-symptom p:first-child{margin-top:0}.brk-symptom p:last-child{margin-bottom:0}
.step .lab-h{font-weight:700;margin:16px 0 6px}

/* CLI cheatsheet */
.cs-chip { text-decoration: none; color: var(--accent); border-color: var(--accent); }
.cs-chip:hover { background: var(--accent-soft); }
.cs-key { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 14px; font-size: 13px; color: var(--muted); }
.cs-dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: -8px; background: var(--muted); opacity: .4; }
.cs-dot.done { background: var(--ok); opacity: 1; }
.cs-dot.now { background: var(--accent); opacity: 1; }
.cs-group > h2 { display: flex; align-items: center; gap: 10px; font-size: 17px; }
.cs-group > h2 .tick { width: 18px; height: 18px; color: var(--ok); }
.cs-mod { font: 700 12px var(--font-head); padding: 2px 7px; border-radius: 6px; background: var(--surface); color: var(--muted); border: 1px solid var(--line); }
.cs-group.now .cs-mod { background: var(--accent-soft); color: var(--accent); border-color: transparent; }
.cs-group.done .cs-mod { background: var(--ok-soft); color: var(--ok); border-color: transparent; }
.cs-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.cs-row { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); gap: 4px 16px; align-items: center; padding: 8px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); border-left: 3px solid var(--line-strong); }
.cs-row.now { border-left-color: var(--accent); }
.cs-row.done { border-left-color: var(--ok); }
.cs-row.ahead, .cs-row.locked { opacity: .55; }
.cs-row p { margin: 0; font-size: 14px; color: var(--muted); }
.cs-cmd { display: flex; align-items: center; gap: 8px; min-width: 0; }
.cs-cmd code { flex: 1; min-width: 0; overflow-x: auto; white-space: nowrap; font-size: 13px; }
.cs-cmd .copy { position: static; flex: none; }
@media (max-width: 720px) { .cs-row { grid-template-columns: 1fr; } }

.report { margin: 18px 0 0; font-size: 14px; }
.report a { color: var(--muted); }
.report a:hover { color: var(--accent); }

/* Lab checks ("Check my progress"), filled in by the portal */
.lab h2 { margin-top: 0; }
.lab-form { display: flex; flex-wrap: wrap; gap: 10px; align-items: end; }
.lab-form label { flex: 1 1 240px; display: flex; flex-direction: column; gap: 6px; font-weight: 600; font-size: 14px; }
.lab-form input { font: inherit; font-weight: 400; padding: 9px 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--card); color: inherit; }
.lab-msg { font-weight: 600; color: var(--danger, #c0392b); }
.lab-sum.ok b { color: var(--ok); }
.lab-rules { list-style: none; padding: 0; margin: 10px 0; display: grid; gap: 8px; }
.lab-r { display: grid; grid-template-columns: 22px minmax(0, 1fr); gap: 8px; align-items: start; }
.lab-r p { margin: 2px 0 0; font-size: 14px; }
.lab-i { font-weight: 700; text-align: center; }
.lab-r.pass .lab-i { color: var(--ok); }
.lab-r.fail .lab-i { color: var(--danger, #c0392b); }
.lab-r.unreadable .lab-i { color: var(--muted); }
.mono-s { font-family: var(--mono); font-size: 13px; overflow-wrap: anywhere; }
.lab-code { font-size: 14px; }

/* Your path (course only or certificate), from the portal */
.path { margin-top: 28px; padding: 24px 24px 20px; scroll-margin-top: 80px; }
.path h2 { font-size: 22px !important; margin: 0 0 6px !important; display: block !important; }
.path > .muted { margin: 0 0 14px; }
.path-opts { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.path-opt { border: 1px solid var(--line); border-radius: 12px; padding: 16px 16px 14px; display: flex; flex-direction: column; background: var(--bg); }
.path-opt h3 { margin: 0 0 6px; font-size: 17px; }
.path-opt p { margin: 0 0 12px; font-size: 14.5px; flex: 1; }
.path-opt .btn { align-self: flex-start; }
.path-opt.on { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; background: var(--accent-soft); }
.path-cur { flex: 0 !important; color: var(--accent); margin: 0 !important; }
.path-compact { display: flex; gap: 12px 18px; align-items: center; justify-content: space-between; flex-wrap: wrap; padding: 14px 18px; }
.path-compact p { margin: 0; flex: 1 1 320px; }
.path-steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; counter-reset: ps; }
.path-step { display: flex; gap: 12px; align-items: flex-start; padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px; background: var(--bg); }
.path-step b { color: var(--heading); }
.path-step p { margin: 4px 0 0; font-size: 14.5px; }
.path-step.done { border-color: color-mix(in srgb, var(--ok) 40%, var(--line)); }
.path-step .btn { margin-left: 6px; min-height: 36px; padding: 0 14px; font-size: 14px; }
.path-i { flex: 0 0 24px; height: 24px; border-radius: 50%; border: 2px solid var(--line); display: grid; place-items: center; font-size: 13px; font-weight: 800; color: var(--on-accent); margin-top: 1px; }
.path-i.ok { background: var(--ok); border-color: var(--ok); }
.path-voucher { display: flex; gap: 8px; margin-top: 8px; flex-wrap: wrap; }
.path-voucher input { flex: 1 1 200px; min-height: 40px; padding: 0 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--card); color: var(--text); font: 500 14px var(--mono); text-transform: uppercase; }
.path-voucher .btn { min-height: 40px; }
.path-switch { margin: 12px 0 0; font-size: 14px; }
.linkish { background: none; border: 0; padding: 0; color: var(--muted); text-decoration: underline; cursor: pointer; font: inherit; }
.linkish:hover { color: var(--accent); }
.lab-cert { margin: 0 0 8px; padding: 8px 12px; border-radius: 10px; background: var(--accent-soft); color: var(--heading); font-size: 14px; }
@media (max-width: 720px) { .path-opts { grid-template-columns: 1fr; } .path { padding: 18px 16px 16px; } }