/* Public Sans is self-hosted (SIL OFL 1.1, see fonts/OFL.txt) so pages make no third-party requests. */
@font-face{font-family:"Public Sans";font-style:normal;font-weight:400;font-display:swap;src:url("fonts/public-sans-latin-400-normal.woff2") format("woff2")}
@font-face{font-family:"Public Sans";font-style:normal;font-weight:500;font-display:swap;src:url("fonts/public-sans-latin-500-normal.woff2") format("woff2")}
@font-face{font-family:"Public Sans";font-style:normal;font-weight:600;font-display:swap;src:url("fonts/public-sans-latin-600-normal.woff2") format("woff2")}
@font-face{font-family:"Public Sans";font-style:normal;font-weight:800;font-display:swap;src:url("fonts/public-sans-latin-800-normal.woff2") format("woff2")}
:root{
  --bg:#EEF1F4; --surface:#FFFFFF; --ink:#16202C; --muted:#5A6573; --line:#D5DBE2; --soft:#E4E9EE;
  --d1:#2D5BD0; --d2:#C9372A; --d3:#12806A; --d4:#8F6100; --d5:#7646AE;
  --d6:#0E7490; --d7:#BE185D; --d8:#4D7C0F; --d9:#9A3412; --d0:#16202C;
  --ok:#12806A; --bad:#C9372A; --warn:#8A5A00; --code:#F5F7F9;
  --accent:#2D5BD0; --on-accent:#FFFFFF;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]){
  --bg:#0E1319; --surface:#17202A; --ink:#E7ECF1; --muted:#95A1AE; --line:#2B3643; --soft:#1F2934;
  --d1:#6E93F0; --d2:#EE6F62; --d3:#3DC19E; --d4:#E8B444; --d5:#AE86E0;
  --d6:#38BDD8; --d7:#F06AA5; --d8:#9CCB4A; --d9:#F08A5A; --d0:#E7ECF1;
  --ok:#3DC19E; --bad:#EE6F62; --warn:#E8B444; --code:#121A22;
  --accent:#7FA6FF; --on-accent:#0E1319;
  color-scheme:dark;
}}
:root[data-theme="dark"]{
  --bg:#0E1319; --surface:#17202A; --ink:#E7ECF1; --muted:#95A1AE; --line:#2B3643; --soft:#1F2934;
  --d1:#6E93F0; --d2:#EE6F62; --d3:#3DC19E; --d4:#E8B444; --d5:#AE86E0;
  --d6:#38BDD8; --d7:#F06AA5; --d8:#9CCB4A; --d9:#F08A5A; --d0:#E7ECF1;
  --ok:#3DC19E; --bad:#EE6F62; --warn:#E8B444; --code:#121A22;
  --accent:#7FA6FF; --on-accent:#0E1319;
  color-scheme:dark;
}
/* Accent color chosen by the learner (Appearance on the home page). Blue is the StudyToCert brand color. */
:root[data-accent="green"]{--accent:#12806A}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"])[data-accent="green"]{--accent:#3DC19E} }
:root[data-theme="dark"][data-accent="green"]{--accent:#3DC19E}
:root[data-accent="purple"]{--accent:#7646AE}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"])[data-accent="purple"]{--accent:#B895E6} }
:root[data-theme="dark"][data-accent="purple"]{--accent:#B895E6}
:root[data-accent="rose"]{--accent:#BE185D}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"])[data-accent="rose"]{--accent:#F27BB0} }
:root[data-theme="dark"][data-accent="rose"]{--accent:#F27BB0}
:root[data-accent="amber"]{--accent:#8F6100}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"])[data-accent="amber"]{--accent:#E8B444} }
:root[data-theme="dark"][data-accent="amber"]{--accent:#E8B444}
:root[data-accent="classic"]{--accent:var(--ink);--on-accent:var(--bg)}
html{scroll-padding-top:120px}
*,*::before,*::after{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:400 16px/1.55 "Public Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased;padding-bottom:env(safe-area-inset-bottom,0px)}
button,input,select{font:inherit;color:inherit}
button{cursor:pointer}
a{color:inherit}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:var(--bg);padding:8px 12px;z-index:10}
.skip:focus{left:8px;top:8px}
.wrap{max-width:760px;margin:0 auto;padding:0 16px 48px}
header.top{position:sticky;top:0;z-index:5;background:var(--bg);border-bottom:1px solid var(--line);padding-top:env(safe-area-inset-top,0px)}
.bar{max-width:760px;margin:0 auto;padding:12px 16px 0;display:flex;align-items:center;justify-content:space-between;gap:12px}
.brand{font-weight:800;font-size:17px;letter-spacing:-.01em;text-decoration:none;display:flex;gap:8px;align-items:baseline;min-width:0}
.brand .home{color:var(--muted);font-weight:600;font-size:14px;white-space:nowrap}
.brand .home:hover{color:var(--ink)}
.brand .name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.right{display:flex;align-items:center;gap:10px;flex:none}
.count{color:var(--muted);font-size:14px;white-space:nowrap}
.count b{color:var(--ink)}
@media (max-width:420px){.count .wide{display:none}}
.theme{background:none;border:1.5px solid var(--line);border-radius:999px;padding:3px 10px;font-size:13px;font-weight:600;color:var(--muted)}
nav.tabs{max-width:760px;margin:0 auto;display:flex;gap:4px;overflow-x:auto;padding:8px 12px 0;scrollbar-width:none}
nav.tabs::-webkit-scrollbar{display:none}
nav.tabs button{background:none;border:0;padding:8px 10px 10px;border-bottom:3px solid transparent;color:var(--muted);font-weight:600;white-space:nowrap}
nav.tabs button[aria-selected="true"]{color:var(--ink);border-color:var(--ink)}
/* route map */
.route{margin:18px -16px 6px;padding:10px 16px 4px;overflow-x:auto;scrollbar-width:thin}
.line{display:flex;align-items:flex-start;position:relative}
.stop{flex:1;display:flex;flex-direction:column;align-items:center;position:relative;background:none;border:0;padding:0 0 6px;min-width:36px}
.stop::before{content:"";position:absolute;top:11px;left:0;right:0;height:6px;background:var(--c)}
.stop:first-child::before{left:50%} .stop:last-child::before{right:50%}
.dot{position:relative;z-index:1;width:28px;height:28px;border-radius:50%;background:var(--surface);border:4px solid var(--c);display:grid;place-items:center;font-size:11px;font-weight:800;color:var(--c)}
.stop.done .dot{background:var(--c);color:var(--surface)}
.stop.now .dot{width:36px;height:36px;margin-top:-4px;box-shadow:0 0 0 4px var(--bg),0 0 0 6px var(--c)}
.stop small{margin-top:6px;font-size:11px;color:var(--muted);white-space:nowrap}
.legend{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:13px;color:var(--muted);margin:8px 0 0}
.legend span::before{content:"";display:inline-block;width:14px;height:6px;border-radius:3px;background:var(--c);margin-right:6px;vertical-align:middle}
h1{font-size:clamp(28px,6vw,40px);line-height:1.1;letter-spacing:-.02em;margin:22px 0 6px;font-weight:800}
h2{font-size:20px;margin:30px 0 10px;letter-spacing:-.01em}
h3{font-size:16px;margin:0 0 4px}
.meta{color:var(--muted);font-size:14px;margin:0}
.chip{display:inline-block;font-size:13px;font-weight:600;padding:2px 10px;border-radius:999px;color:var(--c);border:1.5px solid var(--c)}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin:12px 0}
ul.clean{margin:6px 0 0;padding-left:20px} ul.clean li{margin:3px 0}
.days{list-style:none;margin:0;padding:0}
.days li{display:flex;gap:12px;align-items:flex-start;padding:10px 0;border-top:1px solid var(--soft)}
.days li:first-child{border-top:0}
.days input{width:20px;height:20px;margin-top:2px;accent-color:var(--ok);flex:none}
.days .d{font-weight:700;width:34px;flex:none}
.days label{display:flex;gap:10px;flex:1;cursor:pointer}
.days li.checked span.t{color:var(--muted);text-decoration:line-through}
details.sq{border-top:1px solid var(--soft);padding:10px 0}
details.sq:first-of-type{border-top:0}
details.sq summary{cursor:pointer;font-weight:500;list-style-position:outside}
details.sq p{margin:8px 0 0;color:var(--muted)}
.btns{display:flex;flex-wrap:wrap;gap:10px;margin:14px 0 4px}
.btn{border:0;border-radius:10px;padding:11px 16px;font-weight:700;background:var(--accent);color:var(--on-accent);text-decoration:none;display:inline-block}
.btn.ghost{background:transparent;color:var(--ink);border:1.5px solid var(--line)}
.btn.sm{padding:6px 12px;font-size:14px}
.btn:disabled{opacity:.45;cursor:not-allowed}
.row{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 0;border-top:1px solid var(--soft);flex-wrap:wrap}
.row:first-child{border-top:0}
.row .grow{flex:1;min-width:180px}
.note{font-size:14px;color:var(--muted)}
.wk{border-left:6px solid var(--c);padding-left:14px}
details.week{background:var(--surface);border:1px solid var(--line);border-radius:12px;margin:8px 0;padding:12px 16px}
details.week summary{cursor:pointer;display:flex;gap:10px;align-items:baseline;list-style:none}
details.week summary::-webkit-details-marker{display:none}
details.week .num{font-weight:800;color:var(--c);min-width:34px}
/* quiz */
.qhead{display:flex;justify-content:space-between;align-items:center;margin:20px 0 8px;gap:10px}
.prog{height:6px;background:var(--soft);border-radius:3px;overflow:hidden;margin-bottom:18px}
.prog i{display:block;height:100%;background:var(--c,var(--ink));transition:width .2s}
.q{font-size:19px;font-weight:600;line-height:1.45;margin:0 0 16px}
.opt{display:block;width:100%;text-align:left;background:var(--surface);border:1.5px solid var(--line);border-radius:12px;padding:13px 15px;margin:8px 0;line-height:1.4}
.opt[aria-pressed="true"]{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}
.opt.right{border-color:var(--ok);background:color-mix(in srgb,var(--ok) 12%,var(--surface))}
.opt.wrong{border-color:var(--bad);background:color-mix(in srgb,var(--bad) 10%,var(--surface))}
.expl{border-left:4px solid var(--c,var(--ink));padding:4px 0 4px 14px;margin:14px 0}
.timer{font-variant-numeric:tabular-nums;font-weight:700}
.big{font-size:56px;font-weight:800;letter-spacing:-.03em;line-height:1}
.bars .b{margin:12px 0}
.bars .track{height:10px;border-radius:5px;background:var(--soft);overflow:hidden;margin-top:5px}
.bars .track i{display:block;height:100%;background:var(--c)}
.flex{display:flex;justify-content:space-between;gap:10px;align-items:baseline}
.status{padding:10px 14px;border-radius:10px;background:var(--soft);font-size:14px;margin:10px 0}
.status.warn{border-left:4px solid var(--warn)}
.err{color:var(--bad)}
input[type=date],select{background:var(--surface);border:1.5px solid var(--line);border-radius:8px;padding:7px 10px}
.hide{display:none!important}
.framed .no-framed{display:none!important}
/* home */
.hero p{max-width:60ch}
.cards{display:grid;grid-template-columns:1fr;gap:12px;margin:18px 0}
@media (min-width:640px){.cards{grid-template-columns:1fr 1fr}}
.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px 18px;text-decoration:none;display:flex;flex-direction:column;gap:8px;transition:border-color .15s}
.card:hover{border-color:var(--ink)}
.card .vendor{font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.card h2{margin:0;font-size:20px}
.card p{margin:0;font-size:14px;color:var(--muted)}
.stack{display:flex;height:8px;border-radius:4px;overflow:hidden;gap:2px}
.stack i{display:block;height:100%;background:var(--c)}
.badge{font-size:12px;font-weight:700;padding:1px 8px;border-radius:999px;border:1.5px solid currentColor}
.badge.ok{color:var(--ok)} .badge.check{color:var(--warn)}
.cardfoot{display:flex;justify-content:space-between;gap:8px;font-size:13px;color:var(--muted);flex-wrap:wrap}
/* update bar */
.updbar{position:fixed;left:50%;bottom:0;transform:translateX(-50%);z-index:20;width:min(760px,100%);display:flex;gap:12px;align-items:center;justify-content:space-between;background:var(--ink);color:var(--bg);padding:12px 16px calc(12px + env(safe-area-inset-bottom,0px));border-radius:14px 14px 0 0;font-size:15px;font-weight:600}
.updbar .btn{background:var(--bg);color:var(--ink)}
.barpad{height:10px}
.notice{border-left:4px solid var(--d1)}
/* app nav links look like tabs */
nav.tabs a{padding:8px 10px 10px;border-bottom:3px solid transparent;color:var(--muted);font-weight:600;white-space:nowrap;text-decoration:none}
nav.tabs a[aria-selected="true"]{color:var(--ink);border-color:var(--accent)}
.brand a.name{text-decoration:none;color:var(--ink);display:flex;align-items:center;gap:8px}
.brand .logo{width:26px;height:26px;flex:none;border-radius:6px}
.brand .name span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.brand .name b,a.brand b{color:var(--accent);font-weight:800}
a.brand{align-items:center;color:var(--ink)}
.pickq{margin:12px 0 4px;font-weight:700}
.pickres{margin-top:14px}
.pickres .why{margin:0 0 10px}
.swatches{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 0}
.swatch{display:inline-flex;align-items:center;gap:8px}
.swatch i{width:14px;height:14px;border-radius:50%;background:var(--sw);display:inline-block;border:1px solid var(--line)}
.newscard{border-left:5px solid var(--accent)}
.lede{font-size:18px;margin:10px 0 0}
.crumbs{font-size:14px;color:var(--muted);margin:22px 0 -12px}
.crumbs a{color:var(--muted)}
.btn.danger{background:var(--bad);color:#fff}
textarea{width:100%;font:inherit;font-size:15px;background:var(--surface);color:var(--ink);border:1.5px solid var(--line);border-radius:10px;padding:10px 12px;resize:vertical}
/* labs */
.labgrid{display:grid;grid-template-columns:1fr;gap:10px;margin:10px 0}
@media (min-width:640px){.labgrid{grid-template-columns:1fr 1fr}}
.labcard{display:flex;flex-direction:column;gap:6px;background:var(--surface);border:1px solid var(--line);border-left:5px solid var(--c);border-radius:12px;padding:12px 14px;text-decoration:none;color:var(--ink)}
.labcard:hover{border-color:var(--ink);border-left-color:var(--c)}
.labcard strong{line-height:1.3}
.labtop{display:flex;justify-content:space-between;gap:8px;align-items:center}
.labtop .chip{font-size:12px;padding:0 8px}
.labprog{display:block;height:6px;border-radius:3px;background:var(--soft);overflow:hidden}
.labprog i{display:block;height:100%;background:var(--c)}
.labstate{font-size:13px;font-weight:600;color:var(--muted)}
.labstate.done{color:var(--ok)} .labstate.doing{color:var(--warn)}
.figs3{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:16px 0}
.fig{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:10px 12px}
.fig b{display:block;font-size:26px;font-weight:800;font-variant-numeric:tabular-nums;line-height:1.1}
.fig span{font-size:13px;color:var(--muted)}
.filters{display:flex;flex-wrap:wrap;gap:10px 14px;margin:14px 0 4px;align-items:end}
.filters label{display:flex;flex-direction:column;gap:4px;font-size:13px;font-weight:600;color:var(--muted)}
.filters label.grow{flex:1;min-width:180px}
.filters input{background:var(--surface);border:1.5px solid var(--line);border-radius:8px;padding:7px 10px;font-size:15px;color:var(--ink)}
.realworld{border-left:5px solid var(--d3)}
.realworld p{margin:6px 0 0}
.resume{font-style:italic}
ol.steps-list{list-style:none;padding:0;margin:8px 0;display:grid;gap:10px;counter-reset:none}
ol.steps-list>li{min-width:0;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 14px}
ol.steps-list>li.checked{border-color:color-mix(in srgb,var(--ok) 50%,var(--line))}
ol.steps-list>li.checked .stephead strong{color:var(--muted);text-decoration:line-through}
ol.steps-list.plain>li{padding:12px 14px}
.stephead{display:flex;gap:10px;align-items:center;cursor:pointer}
.stephead input{width:20px;height:20px;accent-color:var(--ok);flex:none}
.stepnum{flex:none;width:26px;height:26px;border-radius:50%;background:var(--soft);display:grid;place-items:center;font-size:13px;font-weight:800}
.stepbody{margin:8px 0 0 66px}
@media (max-width:520px){.stepbody{margin-left:0}}
.stepbody p{margin:0 0 8px}
.cmd{position:relative;margin:6px 0 8px;max-width:100%;min-width:0}
.stepbody{min-width:0;overflow-wrap:anywhere}
.cmd pre{margin:0;background:var(--code,var(--soft));border:1px solid var(--line);border-radius:10px;padding:12px 70px 12px 12px;overflow-x:auto;font:13px/1.55 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;white-space:pre}
.cmd .copybtn{position:absolute;top:6px;right:6px;padding:4px 10px;font-size:13px;background:var(--surface)}
.check{font-size:14px;color:var(--muted)}
/* dialogs and toasts */
.modal-wrap{position:fixed;inset:0;z-index:40;background:rgba(10,15,20,.45);display:grid;place-items:center;padding:16px}
.modal{background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:14px;padding:18px 20px;width:min(420px,100%);box-shadow:0 12px 40px rgba(0,0,0,.25)}
.modal.wide{width:min(640px,100%)}
.modal p{margin:0 0 10px}
.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);z-index:50;background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:10px;font-weight:600;font-size:15px;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;max-width:calc(100% - 32px)}
.toast.show{opacity:1;transform:translate(-50%,0)}
.prose{max-width:68ch}
.prose h2{font-size:18px;margin:26px 0 8px}
.prose p,.prose li{line-height:1.65}
.prose ul{padding-left:22px}
table.sectable{border-collapse:collapse;width:100%;font-size:14.5px;background:var(--surface)}
table.sectable td{padding:10px 12px;border-bottom:1px solid var(--soft);vertical-align:top}
table.sectable td:first-child{width:30%;min-width:130px}
table.sectable tr:last-child td{border-bottom:0}
.scroll{overflow-x:auto;border:1px solid var(--line);border-radius:12px}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9em;background:var(--code);border:1px solid var(--line);border-radius:5px;padding:0 .3em}
.installcard{display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap;border-left:5px solid var(--accent)}
.installcard .grow{flex:1;min-width:200px}
h2.here::after{content:"  · your device";font-size:13px;font-weight:600;color:var(--d1)}
.supportcard{border-left-color:var(--d3)}
.donate{border-left:5px solid var(--d3)}
.donate p{margin:6px 0 0}
.footlinks{display:flex;flex-wrap:wrap;gap:6px 18px;margin-bottom:8px}
.footlinks a{color:var(--ink);font-weight:600}
footer.foot{max-width:760px;margin:0 auto;padding:18px 16px 40px;color:var(--muted);font-size:13px;border-top:1px solid var(--line)}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}
/* account page (only shown when accounts are configured) */
.textin{display:block;width:100%;margin:8px 0 0;background:var(--surface);border:1.5px solid var(--line);border-radius:8px;padding:9px 12px;font-size:16px}
.textin:focus-visible,#cohort-cert:focus-visible{outline:2px solid var(--ink);outline-offset:1px}
#cohort-cert{margin-top:8px;max-width:100%}
/* Pro */
.chip.pro{--c:var(--d5);font-size:11.5px;padding:1px 8px;vertical-align:2px}
.pro-teaser{border-color:var(--d5)}
.pro-teaser .btns{margin-top:10px}
.trend{display:flex;align-items:flex-end;gap:6px;height:96px}
.tbar{flex:1;max-width:36px;background:var(--c);border-radius:4px 4px 0 0;opacity:.85}
.flashcard{background:var(--surface);border:1px solid var(--line);border-left:5px solid var(--c);border-radius:14px;padding:22px 20px;margin:12px 0;min-height:150px}
.flashcard .q{margin:8px 0 0}
.flashcard .expl{margin-top:14px}
.guide details.week h3{margin:14px 0 4px}
@media print{
  header.top,nav.tabs,footer.foot,.no-print,.btns,.toast,.route,.legend{display:none!important}
  body{background:#fff;color:#000}
  .guide details.week{break-inside:avoid-page;border:0}
  .guide details.week>summary{list-style:none}
}
.cmd pre:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
.scroll:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
/* career tracks */
.trackpick{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 4px}
.chipbtn{background:var(--surface);border:1.5px solid var(--line);border-radius:999px;padding:6px 14px;font-size:14px;font-weight:600;cursor:pointer;min-height:36px}
.chipbtn[aria-pressed="true"]{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
.chipbtn:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
.trackh{margin:26px 0 2px}
/* Questions can contain code: keep line breaks and indentation, wrap long lines on phones. */
.q,.qtext,.opt,.expl{white-space:pre-wrap;overflow-wrap:anywhere}
/* Long commands, paths or names in plan text wrap instead of widening the page on phones. */
.days .t,ul.clean li,.expl,.note{min-width:0;overflow-wrap:anywhere}
/* Lessons */
ul.lessons{list-style:none;padding-left:0}
ul.lessons>li{margin:0;border-top:1px solid var(--soft)} ul.lessons>li:first-child{border-top:0}
ul.lessons>li.lesson-none{padding:10px 0;color:var(--muted)}
details.lesson>summary{cursor:pointer;display:flex;gap:10px;align-items:baseline;padding:10px 0;font-weight:600;list-style:none;overflow-wrap:anywhere}
details.lesson>summary::-webkit-details-marker{display:none}
details.lesson>summary::before{content:"▸";color:var(--c,var(--muted));flex:none}
details.lesson[open]>summary::before{content:"▾"}
details.lesson>summary .chip{--c:var(--ok);font-size:12px;padding:0 8px;flex:none}
.lbody{padding:0 0 14px 18px;overflow-wrap:anywhere}
.lbody>p{margin:0 0 10px;line-height:1.6}
.lbody h3{font-size:15px;margin:16px 0 6px}
dl.terms{margin:0;display:grid;grid-template-columns:minmax(90px,max-content) 1fr;gap:6px 14px}
dl.terms dt{font-weight:600} dl.terms dd{margin:0;color:var(--muted)}
@media (max-width:520px){dl.terms{grid-template-columns:1fr;gap:2px} dl.terms dd{margin-bottom:8px}}
.panel.ex{background:var(--soft);margin:12px 0} .panel.ex p{margin:6px 0 0}
pre.code{margin:0 0 10px;background:var(--code);border:1px solid var(--line);border-radius:10px;padding:10px 12px;overflow-x:auto;font:13px/1.55 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;white-space:pre}
pre.code code{border:0;padding:0;background:none;font-size:inherit}
/* Study tools: start cards, streak, links inside text, report link, lesson search */
.startcard{display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap;border-left:5px solid var(--ok)}
.startcard .grow{flex:1;min-width:200px}
.streak{margin:10px 0 0}
.linkbtn{background:none;border:0;padding:0;font:inherit;color:inherit;text-decoration:underline;text-underline-offset:2px;cursor:pointer;text-align:left}
.linkbtn:hover{text-decoration-thickness:2px}
a.report{display:inline-block;margin-top:6px;font-size:13px;color:var(--muted)}
.lbody>a.report{margin:10px 0 0}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.lsearch{gap:10px;align-items:center;flex-wrap:wrap;margin-top:12px}
.lsearch input{width:100%;background:var(--surface);border:1.5px solid var(--line);border-radius:10px;padding:9px 12px;font-size:16px;color:var(--ink)}
details.glossary dl.terms{margin-top:10px}
/* Diagrams: colored by the theme */
figure.diagram{margin:12px 0 14px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:10px}
figure.diagram svg,.ov-fig svg{display:block;width:100%;height:auto;max-height:440px}
figure.diagram figcaption{font-size:13px;color:var(--muted);margin-top:6px}
svg .box{fill:var(--surface);stroke:var(--line);stroke-width:1.5}
svg .box.hi{fill:color-mix(in srgb,var(--c,var(--d1)) 14%,var(--surface));stroke:var(--c,var(--d1))}
svg .ln{fill:none;stroke:var(--ink);stroke-width:1.5}
svg .ln.mute{stroke:var(--muted)}
svg .t{fill:var(--ink);font-family:inherit}
svg .t.s{fill:var(--muted)}
svg .t.b{font-weight:700}
svg .acc{fill:var(--c,var(--d1))}
svg .acc-ln{fill:none;stroke:var(--c,var(--d1));stroke-width:2}
svg .arrow{fill:var(--ink)}
/* Lesson overview player */
.ov-wrap{position:fixed;inset:0;z-index:30;background:rgba(0,0,0,.6);display:flex;align-items:center;justify-content:center;padding:12px}
.ov{background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:16px;width:min(720px,100%);max-height:100%;display:flex;flex-direction:column;padding:12px 14px;box-shadow:0 12px 40px rgba(0,0,0,.3)}
.ov-top{display:flex;justify-content:space-between;align-items:center;gap:10px}
.ov-stage{min-height:min(60vh,380px);display:flex;align-items:center;justify-content:center;padding:18px 8px;overflow:auto;background:linear-gradient(160deg,color-mix(in srgb,var(--d1) 10%,var(--surface)),var(--surface));border-radius:12px;margin:10px 0}
.ov-slide{width:100%;animation:ovIn .45s ease both;overflow-wrap:anywhere}
@keyframes ovIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.ov-kicker{margin:0 0 8px;font-size:13px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--muted)}
.ov-title{margin:0;font-size:clamp(22px,4.5vw,30px);line-height:1.25}
.ov-lead{margin:0;font-size:clamp(17px,3.4vw,21px);line-height:1.5}
.ov-sub{margin:12px 0 0;color:var(--muted);font-size:14px}
.ov-list{margin:0;padding-left:20px;font-size:clamp(16px,3.2vw,19px);line-height:1.5} .ov-list li{margin:6px 0}
.ov-terms{margin:0;display:grid;gap:4px 12px} .ov-terms dt{font-weight:700;font-size:17px} .ov-terms dd{margin:0 0 8px;color:var(--muted)}
.ov-bar{height:4px;background:var(--soft);border-radius:4px;overflow:hidden} .ov-bar i{display:block;height:100%;background:var(--d1);transition:width .3s}
.ov-ctl{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-top:10px}
.ov-n{margin-left:auto}
@media (prefers-reduced-motion:reduce){.ov-slide{animation:none}.ov-bar i{transition:none}}
@media print{.lsearch,.ov-wrap,a.report{display:none!important} #app details>*{display:block} .lbody{padding-left:0}}
/* Static lesson pages */
.lesson-page+*{margin:0}
header.top a.brand{color:var(--ink);padding-bottom:12px}
.lesson-page h1{margin-top:6px}
.lesson-page .lbody{padding:0}
.lesson-page .lbody h2{font-size:19px;margin:22px 0 8px}
.pager{display:flex;justify-content:space-between;gap:12px;margin:18px 0;flex-wrap:wrap}
.pager a{max-width:48%;overflow-wrap:anywhere}
/* Simulations and drills */
.simgrid{display:grid;gap:10px;margin:12px 0}
.simrow{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:10px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:10px 12px}
.simrow label{font-weight:600;overflow-wrap:anywhere}
.simrow select,.simrow input[type=text]{width:100%;max-width:100%;font:inherit;font-size:16px;background:var(--surface);color:var(--ink);border:1.5px solid var(--line);border-radius:8px;padding:7px 9px}
@media (max-width:520px){.simrow{grid-template-columns:1fr}}
.simok{color:var(--ok);font-weight:800;margin-left:6px} .simbad{color:var(--bad);font-weight:800;margin-left:6px}
ol.simorder{padding-left:22px;margin:12px 0} ol.simorder li{display:flex;gap:8px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:8px 10px;margin:6px 0;overflow-wrap:anywhere}
ol.simorder li::marker{font-weight:700}
.simbtns{display:flex;gap:4px;flex:none}
fieldset.simsel{border:0;padding:0;margin:12px 0}
label.simopt{display:flex;gap:10px;align-items:flex-start;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:10px 12px;margin:6px 0;overflow-wrap:anywhere}
label.simopt input{width:20px;height:20px;flex:none;margin-top:2px;accent-color:var(--ok)}
pre.ctx{white-space:pre;margin:10px 0}
details.whys{margin-top:8px} details.whys summary{cursor:pointer;font-weight:600}
/* Today, readiness, cheat sheet */
.panel.today{border-left:5px solid var(--d1)}
.panel.today .flex{align-items:center;gap:10px}
.panel.ready .flex{align-items:center;gap:12px}
.panel.ready .big small{font-size:18px;color:var(--muted);font-weight:600}
.panel.ready .track{height:8px;background:var(--soft);border-radius:8px;overflow:hidden;margin:10px 0 6px}
.panel.ready .track i{display:block;height:100%}
.panel.cheat h3{font-size:15px;margin:6px 0} .panel.cheat ul.clean li{margin:4px 0}
.resumeb{display:grid;gap:6px;max-width:520px}
.resumeb input,.resumeb select{font:inherit;font-size:16px;background:var(--surface);color:var(--ink);border:1.5px solid var(--line);border-radius:8px;padding:8px 10px}
@media print{.panel.cheat{break-inside:auto;border:0;padding:0}}
/* hands-on practice */
.hohead{margin-top:18px} .lbl{display:block;font-weight:600;margin:12px 0 6px}
textarea.codeedit{font:14px/1.5 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:var(--code);tab-size:4;white-space:pre;overflow-x:auto}
ul.hochecks{list-style:none;padding-left:0;margin:10px 0} ul.hochecks li{padding:4px 0}
.hoprompt{margin:6px 0 10px} .hoprompt p{margin:0 0 8px} .hotodo{color:var(--muted);font-weight:800;margin-left:6px}
.term{border:1px solid var(--line);border-radius:10px;background:var(--code);margin:10px 0}
.term pre.termout{border:0;margin:0;max-height:340px;overflow:auto;white-space:pre-wrap;word-break:break-word}
.termin{display:flex;align-items:center;gap:8px;border-top:1px solid var(--line);padding:6px 12px;font:13px ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.termin input{flex:1;min-width:0;border:0;background:transparent;color:var(--ink);font:inherit;padding:6px 0}
.termin input:focus{outline:none} .term:focus-within{outline:3px solid var(--acc, #2F6FEB);outline-offset:2px}
.tp{color:var(--ok);font-weight:600;white-space:nowrap}
.tablewrap{overflow-x:auto;margin:8px 0}
table.kqlt{border-collapse:collapse;font:12.5px/1.4 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;min-width:100%}
table.kqlt th,table.kqlt td{border:1px solid var(--line);padding:4px 8px;text-align:left;vertical-align:top;white-space:nowrap}
table.kqlt th{background:var(--soft)}
.rate{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin:10px 0 4px}
.rate [aria-pressed="true"]{background:var(--soft);border-color:var(--ink)}
.pcapbar input{width:100%;font:13px ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.pcapbar input.good{border-color:var(--ok)} .pcapbar input.bad{border-color:var(--bad)}
.pcaplist{max-height:320px;overflow:auto;border:1px solid var(--line);border-radius:10px}
table.kqlt tr.sel td{background:var(--soft)}
.pcapdetail details{margin:6px 0} .pcapdetail summary{cursor:pointer;font-weight:600}
.pcapdetail code{font-size:12.5px}
table.fwt input,table.fwt select{min-width:90px;font:12.5px ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;padding:4px 6px}
td.nowrap{white-space:nowrap}
.certificate{text-align:center;padding:40px 24px;border-width:3px}
.certificate h1{font-size:34px;margin:10px 0} .certificate h2{margin:8px 0 16px}
.certificate ul{display:inline-block;text-align:left}
@media print{.certificate{border:3px solid #16202C;margin-top:40px}}
.ov-voice select{max-width:170px;font-size:13px;padding:4px 6px}
/* printable study planner */
.planner .pweek{border:1px solid var(--line);border-left:5px solid var(--c);border-radius:10px;padding:10px 12px;margin:10px 0;background:var(--surface);break-inside:avoid}
.planner .pwhead{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}
.planner .pwtopics{margin:4px 0 8px;font-size:14px;color:var(--muted)}
.planner .pdays{display:flex;flex-wrap:wrap;gap:6px 14px;align-items:center;font-size:14px}
.planner .pday{display:inline-flex;align-items:center;gap:5px}
.planner .box{width:15px;height:15px;border:1.5px solid var(--ink);border-radius:3px;display:inline-block}
.planner .box.on{background:var(--ink)}
.planner .pnote{margin-left:auto;color:var(--muted)}
@media print{.planner .pweek{background:#fff;padding:6px 10px;margin:6px 0} .planner .pwtopics{font-size:12px;margin:2px 0 4px} .planner h1{font-size:22px}}
/* practice VMs */
.vmterms.two{display:grid;gap:12px}
@media (min-width:1100px){.vmterms.two{grid-template-columns:1fr 1fr}}
.vmhost{margin:6px 0 4px}
.vmsteps li{margin:6px 0}
.vmcode{font:inherit;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9em;background:var(--code);border:1px solid var(--line);border-radius:5px;padding:0 .3em;color:var(--ink);cursor:pointer;text-align:left}
.vmcode:hover{border-color:var(--accent)}
ul.checks{list-style:none;padding:0;margin:6px 0}
ul.checks li{margin:4px 0}
ul.checks li.ok span{color:var(--ok);font-weight:800}
ul.checks li.no span{color:var(--bad);font-weight:800}
.vmterm{background:#0E1319;border:1px solid var(--line);border-radius:10px;padding:8px;margin:8px 0 18px;min-height:200px;overflow:hidden}
.vmterm .xterm{padding:2px}
.vmtask summary{cursor:pointer}
.vmcmd{display:flex;gap:10px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.vmcmd code{overflow-wrap:anywhere}
.vmcard{border-left:5px solid var(--accent)}
.tsbox{margin:12px 0 0;min-height:65px}
.cmpgrid{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}.cmpgrid .panel{margin:0}
.fixsteps li{display:flex;gap:10px;align-items:flex-start}.fixsteps .fixchk{padding-top:2px}.fixsteps .linkbtn{text-align:left}
select{max-width:100%;text-overflow:ellipsis}

/* ---------- Motion and delight (assets/fx.js). All of it switches off with "reduce motion". ---------- */
@keyframes fx-fadeup{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@keyframes fx-pop{0%{transform:scale(1)}40%{transform:scale(1.025)}100%{transform:scale(1)}}
@keyframes fx-shake{0%,100%{transform:translateX(0)}20%{transform:translateX(-6px)}40%{transform:translateX(5px)}60%{transform:translateX(-3px)}80%{transform:translateX(2px)}}
@keyframes fx-flip{from{transform:perspective(900px) rotateY(80deg);opacity:.4}to{transform:none;opacity:1}}
@keyframes fx-slidein{from{transform:translateX(18px);opacity:0}to{transform:none;opacity:1}}
@keyframes fx-grow{from{transform:scaleX(0)}}
@keyframes fx-ring{from{stroke-dasharray:0 100}}
@keyframes fx-pulse{0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--c,var(--accent)) 55%,transparent)}70%{box-shadow:0 0 0 10px transparent}100%{box-shadow:0 0 0 0 transparent}}
@keyframes fx-flicker{0%,100%{transform:scale(1) rotate(-2deg)}50%{transform:scale(1.08) rotate(2deg)}}
@keyframes fx-shimmer{from{background-position:-200% 0}to{background-position:200% 0}}
@keyframes fx-medal{0%{transform:translate(-50%,24px) scale(.8);opacity:0}60%{transform:translate(-50%,-4px) scale(1.03);opacity:1}100%{transform:translate(-50%,0) scale(1)}}
@keyframes fx-travel{from{offset-distance:0%}to{offset-distance:100%}}
@keyframes fx-dash{to{stroke-dashoffset:-24}}
@keyframes fx-bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-4px)}}

/* Page and tab changes */
#app.fx-enter{animation:fx-fadeup .32s ease-out}

/* Buttons, cards and answers */
.btn,.chipbtn,.opt,.card,.labcard,.linkbtn{transition:transform .15s ease,box-shadow .2s ease,border-color .15s,background-color .15s,filter .15s}
.btn:not(:disabled):hover{filter:brightness(1.07)}
.btn:not(:disabled):active,.chipbtn:active{transform:scale(.97)}
.card:not([aria-disabled]):hover,.labcard:hover{transform:translateY(-3px);box-shadow:0 10px 26px color-mix(in srgb,var(--ink) 13%,transparent)}
.opt:not(:disabled):hover{transform:translateX(3px);border-color:var(--accent)}
.opt.right{animation:fx-pop .35s ease}
.opt.wrong{animation:fx-shake .4s ease}
.opt.right::after{content:" ✓";font-weight:800;color:var(--ok)}
.opt.wrong::after{content:" ✗";font-weight:800;color:var(--bad)}
.expl{animation:fx-fadeup .3s ease-out}
.flashcard{animation:fx-slidein .28s ease-out}
.flashcard.flipped{animation:fx-flip .42s ease-out}

/* Cards rise into view as you scroll (browsers with scroll-driven animations), or as they appear. */
.cards .card,.labgrid .labcard{animation:fx-fadeup .45s ease-out both}
.cards .card:nth-child(2),.labgrid .labcard:nth-child(2){animation-delay:.04s}
.cards .card:nth-child(3),.labgrid .labcard:nth-child(3){animation-delay:.08s}
.cards .card:nth-child(4),.labgrid .labcard:nth-child(4){animation-delay:.12s}
.cards .card:nth-child(n+5),.labgrid .labcard:nth-child(n+5){animation-delay:.16s}
@supports (animation-timeline:view()){
  .cards .card,.labgrid .labcard{animation:fx-fadeup linear both;animation-timeline:view();animation-range:entry 0% entry 35%;animation-delay:0s}
}

/* Progress: bars fill, rings draw, the current week pulses, streaks flicker */
.bars .track i,.ready .track i,.stack i{transform-origin:left;animation:fx-grow .9s cubic-bezier(.2,.8,.2,1) both}
.ring{--p:0;--rc:var(--accent);position:relative;display:inline-grid;place-items:center;width:112px;height:112px;flex:none}
.ring svg{position:absolute;inset:0;width:100%;height:100%;transform:rotate(-90deg)}
.ring circle{fill:none;stroke-width:3.2}
.ring .rbg{stroke:var(--soft)}
.ring .rfg{stroke:var(--rc);stroke-linecap:round;stroke-dasharray:var(--p) 100;animation:fx-ring 1.1s cubic-bezier(.2,.8,.2,1)}
.ring .rnum{font-size:30px;font-weight:800;line-height:1;text-align:center}
.ring .rnum small{display:block;font-size:12px;font-weight:600;color:var(--muted)}
.ring.sm{width:76px;height:76px}.ring.sm .rnum{font-size:20px}
.ringrow{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.route .stop.now .dot{animation:fx-pulse 2s ease-out infinite}
.route .stop.done .dot{background:var(--c);color:var(--surface);border-color:var(--c)}
.flame{width:1.25em;height:1.25em;vertical-align:-.25em;color:#E8773A;fill:color-mix(in srgb,#E8773A 30%,transparent);animation:fx-flicker 1.6s ease-in-out infinite;transform-origin:50% 90%}
.flame.l2{width:1.5em;height:1.5em;fill:color-mix(in srgb,#E8773A 55%,transparent)}
.flame.l3{width:1.8em;height:1.8em;color:#D9480F;fill:#F59F00}

/* Celebrations */
.fx-confetti{position:fixed;inset:0;width:100vw;height:100vh;pointer-events:none;z-index:60}
.fx-pop{position:fixed;left:50%;bottom:28px;transform:translateX(-50%);z-index:61;display:flex;align-items:center;gap:12px;width:max-content;max-width:min(calc(100vw - 32px),440px);padding:14px 18px;border-radius:16px;background:var(--surface);color:var(--ink);border:1.5px solid var(--accent);box-shadow:0 14px 40px color-mix(in srgb,var(--ink) 25%,transparent);animation:fx-medal .5s cubic-bezier(.2,.9,.3,1.3) both;transition:opacity .5s,transform .5s}
.fx-pop .ico{width:40px;height:40px;flex:none;color:#C58A00;fill:color-mix(in srgb,#F5C542 45%,transparent)}
.fx-pop strong{display:block;font-size:17px}.fx-pop span{font-size:14px;color:var(--muted)}
.fx-pop.out{opacity:0;transform:translate(-50%,16px)}

/* Icons */
.ico{width:1.15em;height:1.15em;vertical-align:-.2em;flex:none}
.trackpick .chipbtn .ico{margin-right:6px}
.card .trackico{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:10px;background:color-mix(in srgb,var(--tc,var(--accent)) 14%,var(--surface));color:var(--tc,var(--accent))}
.card .trackico .ico{width:20px;height:20px}

/* Loading skeletons */
.skel{display:grid;gap:10px;margin:16px 0}
.skel i{display:block;height:14px;border-radius:7px;background:linear-gradient(90deg,var(--soft) 25%,color-mix(in srgb,var(--soft) 40%,var(--surface)) 50%,var(--soft) 75%);background-size:200% 100%;animation:fx-shimmer 1.3s linear infinite}
.skel i:nth-child(2){width:92%}.skel i:nth-child(3){width:78%}.skel i:nth-child(4){width:86%}.skel i:first-of-type{height:22px;width:55%}
.vmprog{height:6px;border-radius:3px;background:var(--soft);overflow:hidden;margin:8px 0 0}
.vmprog i{display:block;height:100%;width:var(--w,0%);background:var(--accent);transition:width .3s ease}
.vmprog.busy i{width:35%;animation:fx-indet 1.2s ease-in-out infinite}
@keyframes fx-indet{from{transform:translateX(-100%)}to{transform:translateX(300%)}}

/* Home: animated career path */
.hero.withart{display:grid;grid-template-columns:1fr;gap:8px;align-items:center}
@media (min-width:900px){.hero.withart{grid-template-columns:minmax(0,1.35fr) minmax(0,1fr)}}
.heroart{width:100%;max-width:420px;justify-self:center}
.heroart svg{width:100%;height:auto;display:block;overflow:visible}
.heroart .path{fill:none;stroke:var(--line);stroke-width:3;stroke-linecap:round}
.heroart .flow{fill:none;stroke:var(--accent);stroke-width:3;stroke-linecap:round;stroke-dasharray:6 18;animation:fx-dash 1.4s linear infinite}
.heroart .node circle{fill:var(--surface);stroke:var(--c);stroke-width:2.5}
.heroart .node .ico{color:var(--c)}
.heroart .node{animation:fx-bob 3.6s ease-in-out infinite}
.heroart .node:nth-of-type(2){animation-delay:.5s}.heroart .node:nth-of-type(3){animation-delay:1s}.heroart .node:nth-of-type(4){animation-delay:1.5s}.heroart .node:nth-of-type(5){animation-delay:2s}
.heroart .goal circle{fill:var(--accent)}
.heroart .goal .ico{color:var(--on-accent)}
.heroart .traveler{fill:var(--accent);offset-path:path("M30 250 C 110 250, 90 170, 170 170 S 250 90, 330 90 S 380 30, 390 20");animation:fx-travel 6s ease-in-out infinite}
.heroart text{font-size:12px;font-weight:700;fill:var(--muted)}

@media (prefers-reduced-motion:reduce){
  #app.fx-enter,.opt.right,.opt.wrong,.expl,.flashcard,.flashcard.flipped,.cards .card,.labgrid .labcard,.bars .track i,.ready .track i,.stack i,.ring .rfg,.route .stop.now .dot,.flame,.fx-pop,.skel i,.vmprog.busy i,.heroart .flow,.heroart .node,.heroart .traveler{animation:none!important}
  .heroart .traveler{display:none}
  .card:hover,.labcard:hover,.opt:hover{transform:none}
}
@media print{.fx-confetti,.fx-pop{display:none}}
.heroart .node .ico{width:20px;height:20px}

/* ---------- dashboard ---------- */
.dashsum{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:18px 0}
.dashsum .panel{margin:0;display:flex;flex-direction:column;gap:4px}
.dashnum{display:flex;align-items:center;gap:6px;font-size:28px;font-weight:800;line-height:1.1}
.dashnum .ico{width:26px;height:26px}
.dashgrid{display:grid;grid-template-columns:1fr;gap:12px;margin:12px 0 18px}
.dashcard{margin:0;border-top:4px solid var(--c);animation:fx-fadeup .45s ease-out both}
.dashcard .vendor{font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.dashcard h2{margin:2px 0 4px;font-size:20px}.dashcard h2 a{color:inherit;text-decoration:none}.dashcard h2 a:hover{text-decoration:underline}
.dashcard .note{margin:0}
.dashtop{display:flex;align-items:center;gap:14px}
.dashcard .ring{width:76px;height:76px}.dashcard .ring .rnum{font-size:20px}
.dashstats{list-style:none;padding:0;margin:12px 0 10px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px 12px;font-size:14px;color:var(--muted)}
.dashstats strong{color:var(--ink)}
.dashcard .track{height:6px;border-radius:3px;background:var(--soft);overflow:hidden}
.dashcard .track i{display:block;height:100%;animation:fx-grow .9s cubic-bezier(.2,.8,.2,1) both;transform-origin:left}
@media (min-width:720px){.dashsum{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}.dashgrid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (prefers-reduced-motion:reduce){.dashcard,.dashcard .track i{animation:none!important}}

/* ---------- quick games ---------- */
.gamegrid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
.gamecard .trackico .ico{width:30px;height:30px;color:var(--accent)}
.gamebar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:8px 0;font-size:18px}
.gamebar .timer{font-variant-numeric:tabular-nums;font-weight:800;font-size:24px}
.gametrack{height:8px;border-radius:4px;background:var(--soft);overflow:hidden;margin-bottom:12px}
.gametrack i{display:block;height:100%;background:var(--accent);transition:width .25s linear}
.opt .key{display:inline-grid;place-items:center;min-width:1.6em;height:1.6em;margin-right:6px;border:1px solid var(--line);border-radius:6px;font-size:13px;font-weight:700;color:var(--muted)}
@media (hover:none){.opt .key{display:none}}

/* ---------- exam interface ---------- */
.optrow{display:flex;align-items:stretch;gap:6px}
.optrow .opt{flex:1;min-width:0}
.strike{flex:none;width:40px;margin:8px 0;border:1.5px solid var(--line);border-radius:12px;background:var(--surface);color:var(--muted);font-size:15px}
.strike[aria-pressed="true"]{background:var(--soft);color:var(--ink);border-color:var(--ink)}
.opt.struck{text-decoration:line-through;opacity:.55}
.qnav{margin:6px 0 10px}.qnav summary{cursor:pointer;font-weight:600;color:var(--muted)}
.qgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(40px,1fr));gap:6px;margin:10px 0}
.qcell{position:relative;height:40px;border:1.5px solid var(--line);border-radius:8px;background:var(--surface);font-weight:700;font-variant-numeric:tabular-nums}
.qcell.done{background:color-mix(in srgb,var(--accent) 16%,var(--surface));border-color:var(--accent)}
.qcell.now{outline:2px solid var(--ink);outline-offset:1px}
.qcell.flag::after{content:"⚑";position:absolute;top:-2px;right:3px;font-size:11px;color:var(--warn)}
.keys{margin-top:6px}
@media (hover:none){.keys{display:none}}

/* ---------- knowledge map ---------- */
.kmrow{margin:0 0 14px}
.kmrow .btn{margin-top:6px}
.kmcells{display:flex;flex-wrap:wrap;gap:3px;margin-top:6px}
.kmcells i,.kmkey i{display:inline-block;width:12px;height:12px;border-radius:3px;background:var(--soft)}
.kmcells i.miss,.kmkey i.miss{background:var(--bad)}
.kmcells i.learn,.kmkey i.learn{background:var(--warn)}
.kmcells i.known,.kmkey i.known{background:var(--ok)}
.kmkey{display:flex;flex-wrap:wrap;gap:14px;margin:4px 0 0}.kmkey span{display:inline-flex;align-items:center;gap:6px}
@media (prefers-contrast:more){.kmcells i.new,.kmkey i.new{outline:1px solid var(--line)}}

/* ---------- achievements ---------- */
.achgrid{display:grid;grid-template-columns:1fr;gap:10px;margin:16px 0}
@media (min-width:720px){.achgrid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.ach{margin:0;display:flex;gap:14px;align-items:flex-start}
.ach .achico{flex:none;display:grid;place-items:center;width:52px;height:52px;border-radius:50%;background:var(--soft);color:var(--muted)}
.ach .achico .ico{width:28px;height:28px}
.ach.got .achico{background:color-mix(in srgb,#F5C542 30%,var(--surface));color:#9A6B00}
.ach:not(.got){opacity:.85}
.ach .track{height:6px;border-radius:3px;background:var(--soft);overflow:hidden;margin:8px 0 2px}
.ach .track i{display:block;height:100%;background:var(--accent)}
.ach .chip{margin-top:6px}

/* ---------- reading settings ---------- */
:root[data-size="lg"] body{zoom:1.12}
:root[data-size="xl"] body{zoom:1.25}
:root[data-read="easy"] body{font-family:Verdana,Tahoma,"Segoe UI",sans-serif;letter-spacing:.03em;word-spacing:.12em;line-height:1.8}
:root[data-read="easy"] p,:root[data-read="easy"] li{max-width:70ch}
:root[data-contrast="more"]{--muted:#2E3742;--line:#6B7684;--soft:#D3DAE2}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"])[data-contrast="more"]{--muted:#CBD3DC;--line:#7A8796;--soft:#2A3542} }
:root[data-theme="dark"][data-contrast="more"]{--muted:#CBD3DC;--line:#7A8796;--soft:#2A3542}
:root[data-contrast="more"] a{text-decoration-thickness:2px}
:root[data-contrast="more"] .btn.ghost,:root[data-contrast="more"] .chipbtn,:root[data-contrast="more"] .opt{border-width:2px}
.ach .grow{flex:1;min-width:0}

/* ---------- printable flashcards ---------- */
.printcards{display:grid;grid-template-columns:1fr;gap:0;margin:12px 0}
.pcard{display:grid;grid-template-columns:1fr 1fr;border:1px dashed var(--line);break-inside:avoid;min-height:120px}
.pcard>div{padding:14px 16px;display:flex;flex-direction:column;justify-content:center;gap:6px}
.pcard .front{border-right:1px solid var(--line);border-left:6px solid var(--c)}
.pcard .front small{color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.06em}
.pcard .front strong{font-size:18px}
.pcard .back{font-size:14px}
@media print{.printcards{margin:0}.pcard{min-height:1.6in;border-color:#999}.pcard .front{border-right:1px solid #999}}

/* ---------- habits: goal, recap, focus timer, readiness chart ---------- */
.habits{margin-top:4px}
.goalcard .track,.recap .track{height:8px;border-radius:4px;background:var(--soft);overflow:hidden;margin:8px 0}
.goalcard .track i{display:block;height:100%;background:var(--ok)}
.goalcard .trackpick{margin-top:8px}
.recap .up{color:var(--ok);font-weight:700;font-size:13px}.recap .down{color:var(--bad);font-weight:700;font-size:13px}
.focuspill{position:fixed;left:16px;bottom:calc(16px + env(safe-area-inset-bottom,0px));z-index:55;display:flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:var(--surface);color:var(--ink);border:1.5px solid var(--accent);box-shadow:0 8px 24px color-mix(in srgb,var(--ink) 20%,transparent);font-weight:700;font-variant-numeric:tabular-nums}
.focuspill .linkbtn{font-weight:600}
@media print{.focuspill{display:none}}
.rchart{margin:10px 0 0}
.rchart svg{width:100%;height:auto;display:block}
.rchart polyline{fill:none;stroke:var(--accent);stroke-width:3;stroke-linejoin:round;stroke-linecap:round}
.rchart circle{fill:var(--accent)}
.rchart .band{stroke:var(--line);stroke-dasharray:4 4}
.rchart text{fill:var(--muted);font-size:12px}

/* ---------- quiz builder and confidence ---------- */
.builder{border-top:1px solid var(--line);padding-top:10px;margin-top:6px}
.builder summary{cursor:pointer}.builder summary h3{display:inline;margin:0}
.builder fieldset{border:0;padding:0;margin:10px 0}.builder legend{font-weight:600;margin-bottom:6px}
.builder label.chipbtn{display:inline-flex;gap:6px;align-items:center;cursor:pointer}
.bopts{flex-wrap:wrap;gap:12px;justify-content:flex-start}.bopts label{display:flex;flex-direction:column;gap:4px;font-size:14px;color:var(--muted)}
.guessrow{margin:4px 0 0;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.finalweek{border-left:6px solid var(--warn)}
.fw{list-style:none;padding:0;margin:10px 0}
.fw li{display:flex;gap:12px;padding:8px 0;border-top:1px solid var(--line)}
.fw li .fwd{flex:none;width:82px;font-weight:700;color:var(--muted);font-size:14px}
.fw li.now{background:color-mix(in srgb,var(--warn) 12%,transparent);border-radius:8px;padding:8px}
.fw li.now .fwd{color:var(--ink)}
.fw li.past{opacity:.55}

/* ---------- log puzzles and tabletops ---------- */
.loglines{list-style:none;counter-reset:ll;padding:0;margin:12px 0}
.loglines li{counter-increment:ll;display:flex;gap:8px;align-items:stretch;margin:4px 0}
.loglines li::before{content:counter(ll);flex:none;width:1.8em;text-align:right;color:var(--muted);font-variant-numeric:tabular-nums;padding-top:9px;font-size:13px}
.logline{flex:1;min-width:0;text-align:left;background:var(--surface);border:1.5px solid var(--line);border-radius:8px;padding:8px 10px;overflow-x:auto;cursor:pointer}
.logline code{white-space:pre;font-size:13px;background:none;padding:0}
.logline:hover:not([disabled]){border-color:var(--accent)}
.logline.right{border-color:var(--ok);background:color-mix(in srgb,var(--ok) 12%,var(--surface))}
.logline.wrong{border-color:var(--bad);background:color-mix(in srgb,var(--bad) 10%,var(--surface))}
.logline[disabled]{cursor:default}
.ttstep{border-left:3px solid var(--line);padding:2px 0 2px 14px;margin:0 0 14px}
.ttstep p{margin:6px 0}

/* ---------- plain data tables (exam changes) ---------- */
table.plain{border-collapse:collapse;width:100%;font-size:14.5px}
table.plain th,table.plain td{padding:8px 10px;border-bottom:1px solid var(--soft);text-align:left;white-space:nowrap}
table.plain th{font-size:13px;color:var(--muted);font-weight:700}
table.plain tr:last-child td{border-bottom:0}

/* ---------- a day in the life ---------- */
.dayline{list-style:none;padding:0;margin:10px 0 18px;border-left:3px solid var(--accent)}
.dayline li{display:flex;gap:14px;padding:8px 0 8px 14px;position:relative}
.dayline li::before{content:"";position:absolute;left:-7px;top:15px;width:11px;height:11px;border-radius:50%;background:var(--surface);border:3px solid var(--accent)}
.dayline .dlh{flex:none;width:48px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--muted)}

table.plain td.up{color:var(--ok);font-weight:700}table.plain td.down{color:var(--bad);font-weight:700}

/* ---------- network design puzzles ---------- */
.netdiagram{display:flex;flex-direction:column;gap:14px;margin:14px 0;padding:14px;border:1px dashed var(--line);border-radius:12px;background:var(--bg)}
.nrow{display:flex;flex-wrap:wrap;align-items:center;gap:0}
.nd{min-width:110px;padding:10px 12px;border-radius:10px;border:1.5px solid var(--line);background:var(--surface);font-weight:600;font-size:14px;text-align:center}
.nd.fixed{color:var(--muted)}
.nd.slot{display:flex;flex-direction:column;gap:4px;border-style:dashed;border-color:var(--accent)}
.nd.slot .sl{font-size:11px;font-weight:800;color:var(--accent)}
.nd.slot select{font:inherit;font-weight:500;max-width:190px}
.nd.slot.right{border-style:solid;border-color:var(--ok);background:color-mix(in srgb,var(--ok) 10%,var(--surface))}
.nd.slot.wrong{border-style:solid;border-color:var(--bad);background:color-mix(in srgb,var(--bad) 8%,var(--surface))}
.nlink{width:22px;height:2px;background:var(--muted);flex:none}
@media (max-width:560px){.nrow{flex-direction:column;align-items:stretch}.nlink{width:2px;height:14px;align-self:center}.nd.slot select{max-width:none}}
/* Phones: a compact header (icon-only back, language and theme buttons) so the certification name fits,
   fade edges on tab bars that scroll sideways, and rows whose controls sit together under the text. */
nav.tabs.fl{-webkit-mask-image:linear-gradient(to right,transparent,#000 36px);mask-image:linear-gradient(to right,transparent,#000 36px)}
nav.tabs.fr{-webkit-mask-image:linear-gradient(to left,transparent,#000 36px);mask-image:linear-gradient(to left,transparent,#000 36px)}
nav.tabs.fl.fr{-webkit-mask-image:linear-gradient(to right,transparent,#000 36px,#000 calc(100% - 36px),transparent);mask-image:linear-gradient(to right,transparent,#000 36px,#000 calc(100% - 36px),transparent)}
@media (max-width:560px){
  .bar{gap:8px;padding:10px 12px 0}
  .right{gap:6px}
  .brand{gap:6px;align-items:center}
  .brand .home[hidden]{display:none}
  .brand .home{font-size:0;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;min-width:32px;min-height:32px;margin-left:-6px}
  .brand .home::before{content:"\2190";font-size:22px;line-height:1;color:var(--ink)}
  .theme{font-size:0;min-width:34px;min-height:34px;padding:0;display:inline-flex;align-items:center;justify-content:center}
  .theme::before{content:"\25D0";font-size:17px;line-height:1}
  #langbtn::before{content:attr(lang);font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.03em}
  .count{font-size:13px}
  nav.tabs{padding:4px 4px 0}
  nav.tabs a,nav.tabs button{padding:8px 9px 10px}
  .row .grow{flex-basis:100%}
  .hero .btns .btn{flex:1 1 100%;text-align:center}
  .heroart{max-width:280px}
}
/* Log in / sign up and the profile page */
.authcard{max-width:460px;margin:0 auto}
.authcard h1{text-align:center}
.authcard>.meta{text-align:center}
.social{display:grid;gap:10px}
.btn.socialbtn{display:flex;align-items:center;justify-content:center;gap:10px;background:var(--surface);color:var(--ink);border:1.5px solid var(--line);font-weight:700;min-height:46px;text-decoration:none}
.btn.socialbtn:hover{border-color:var(--ink)}
.socialbtn svg,.plogo svg{width:20px;height:20px;flex:none}
.orline{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:13px;margin:16px 0 12px}
.orline::before,.orline::after{content:"";flex:1;border-top:1px solid var(--line)}
.authhint{text-align:center}
.authswitch{display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:center;font-size:15px;margin-top:18px}
/* Log in: one small centred card */
.authlogin{max-width:480px;margin:28px auto 0}
.logincard{text-align:center;padding:28px 24px 20px}
.logincard h1{margin:10px 0 4px;font-size:28px}
.logincard>.meta{margin:0 0 18px}
.logincard form,.logincard .orline,.logincard .note:not(.authhint){text-align:left}
.loginbadge{width:56px;height:56px;margin:0 auto;border-radius:50%;display:grid;place-items:center;background:var(--soft);color:var(--accent)}
.loginbadge svg{width:26px;height:26px}
.authlogin .social{grid-template-columns:1fr 1fr}
.authlogin .socialbtn{padding-inline:10px;white-space:nowrap}
.authlogin .socialbtn span{font-size:15px}
@media (max-width:520px){.authlogin .social{grid-template-columns:1fr}}
/* Sign up: a tinted banner with the three steps, then the form beside what an account gives you */
.authsignup{max-width:1000px;margin:0 auto}
.signuphero{background:var(--soft);border-radius:18px;padding:26px 24px 22px;margin-top:18px}
.signuphero h1{margin:4px 0 6px}
.signuphero .meta{margin:0;max-width:60ch}
.eyebrow{margin:0;font-size:12px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}
.signupsteps{display:grid;gap:12px;margin:18px 0 0;padding:0}
.signupsteps li{display:flex;gap:10px;align-items:flex-start}
.signupsteps li>div{display:grid;gap:2px;min-width:0}
.stepnum{flex:none;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:var(--accent);color:var(--on-accent);font-weight:800;font-size:14px}
.signupbody{display:grid;gap:8px 36px;align-items:start;margin-top:22px}
.signupcard{border-top:4px solid var(--accent)}
.signupcard h2{margin-top:0;font-size:20px}
.signupcard .authswitch{margin-bottom:0}
.authperks h2{margin-top:6px;font-size:20px}
.perklist{display:grid;gap:14px;margin:12px 0 0}
.perklist li{display:grid;gap:2px;padding-left:30px;position:relative}
.perklist li::before{content:"";position:absolute;left:0;top:3px;width:18px;height:18px;border-radius:50%;background:var(--accent);-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M10 0a10 10 0 100 20 10 10 0 000-20zm-1.3 14.2L4.5 10l1.4-1.4 2.8 2.8 5.4-5.4 1.4 1.4z'/%3E%3C/svg%3E") center/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M10 0a10 10 0 100 20 10 10 0 000-20zm-1.3 14.2L4.5 10l1.4-1.4 2.8 2.8 5.4-5.4 1.4 1.4z'/%3E%3C/svg%3E") center/contain no-repeat}
@media (min-width:760px){.signupsteps{grid-template-columns:repeat(3,1fr)}}
@media (min-width:860px){.signupbody{grid-template-columns:440px 1fr}}
.profhead{display:flex;gap:16px;align-items:center;margin-top:22px}
.profhead h1{margin:0 0 2px}
.profhead .meta,.profhead .note{margin:0}
.avatar{--h:210;width:72px;height:72px;flex:none;border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:28px;color:#fff;background:hsl(var(--h) 55% 42%)}
.bio{white-space:pre-line;margin:14px 0 0}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px;text-decoration:none;color:var(--ink);display:flex;flex-direction:column;gap:2px}
.stat strong{font-size:26px;line-height:1.1}
.stat span{color:var(--muted);font-size:13px}
.stat:hover{border-color:var(--accent)}
.formgrid{display:grid;grid-template-columns:2fr 1fr;gap:12px}
.plogo{display:inline-flex;vertical-align:-4px;margin-right:8px}
.acctchip{font-size:13px;font-weight:700;text-decoration:none;color:var(--ink);white-space:nowrap}
.acctchip.in{--h:210;width:32px;height:32px;border-radius:50%;display:inline-grid;place-items:center;color:#fff;background:hsl(var(--h) 55% 42%);font-size:12px}
.acctbox{display:inline-flex;align-items:center;gap:8px}
.acctchip.signup{background:var(--accent);color:var(--on-accent);padding:6px 12px;border-radius:999px}
.acctchip.signup:hover{filter:brightness(1.08)}
@media (max-width:420px){.acctbox{gap:6px}.acctchip.signup{padding:5px 9px}}
@media (max-width:400px){.brand .name span{display:none}}
/* Plans */
.plancards{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px;margin:16px 0}
.plancard{display:flex;flex-direction:column;gap:6px;margin:0;position:relative}
.plancard h2{margin:0}
.plancard p{margin:4px 0}
.plancard ul{margin:4px 0 8px;flex:1}
.plancard .btns{margin-top:auto;flex-direction:column;align-items:stretch}
.plancard .btns .btn{text-align:center;justify-content:center}
.plancard.best{border:2px solid var(--accent)}
.plancard.best .premchip{position:absolute;top:-12px;right:14px;background:var(--surface)}
.pprice{display:block;font-size:15px}
.pprice strong{font-size:28px;font-weight:800}
.pcur{font-weight:700;color:var(--ok);margin:0}
.premchip{--c:var(--accent);font-size:11px;padding:0 8px;vertical-align:1px}
.ptablewrap{overflow-x:auto;padding:0}
.ptable{width:100%;border-collapse:collapse;font-size:14px}
@media (max-width:560px){.ptable{font-size:13px}.ptable th,.ptable td{padding:8px 6px}.ptable thead th:not(:first-child){font-size:12px;width:52px}}
.ptable th,.ptable td{padding:9px 12px;border-bottom:1px solid var(--line);text-align:center}
.ptable th[scope=row],.ptable th[scope=col]:first-child{text-align:left;font-weight:500}
.ptable thead th{font-weight:800;background:var(--soft)}
.ptable .pgroup th{text-align:left;font-weight:800;background:var(--soft);font-size:13px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
.ptick{color:var(--ok);font-weight:800}
.pval{font-size:13px;font-weight:600}
.planlimit{margin:6px 0 10px}
.lockbtn .ico{width:15px;height:15px;vertical-align:-2px;margin-right:4px}
.pno{color:var(--muted)}
/* AI tutor (Premium Pro) */
.tutbtn .ico{width:16px;height:16px;vertical-align:-3px;margin-right:4px}
.modal.tutor{display:flex;flex-direction:column;max-height:min(720px,calc(100vh - 32px));padding:0;overflow:hidden}
.tuthead{display:flex;gap:10px;align-items:flex-start;padding:14px 16px;border-bottom:1px solid var(--line)}
.tuthead .note{margin:0}
.tutlog{flex:1;overflow-y:auto;padding:14px 16px;display:flex;flex-direction:column;gap:10px;min-height:180px}
.tutmsg{padding:10px 12px;border-radius:12px;max-width:92%;line-height:1.5}
.tutmsg p{margin:0 0 6px}.tutmsg p:last-child{margin:0}
.tutmsg ul{margin:4px 0 6px;padding-left:20px}
.tutmsg.ai{background:var(--soft);align-self:flex-start}
.tutmsg.me{background:var(--accent);color:var(--on-accent);align-self:flex-end}
.tutform{display:flex;gap:8px;padding:10px 16px;border-top:1px solid var(--line);align-items:flex-end}
.tutform textarea{flex:1;resize:vertical;min-height:44px;font:inherit;padding:8px 10px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--ink)}
.tutnote{padding:0 16px 12px;margin:0}
@media (max-width:560px){.stats{grid-template-columns:repeat(2,1fr)}.formgrid{grid-template-columns:1fr}.avatar{width:56px;height:56px;font-size:22px}}
/* Settings */
.settabs{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none;margin:14px -16px 6px;padding:0 16px;border-bottom:1px solid var(--line)}
.settabs::-webkit-scrollbar{display:none}
.settabs a{padding:8px 10px 10px;border-bottom:3px solid transparent;color:var(--muted);font-weight:600;white-space:nowrap;text-decoration:none}
.settabs a[aria-current="page"]{color:var(--ink);border-color:var(--accent)}
.settabs a:hover{color:var(--ink)}
kbd{display:inline-block;min-width:1.6em;padding:1px 6px;border:1px solid var(--line);border-bottom-width:2px;border-radius:5px;background:var(--surface);font:600 13px ui-monospace,SFMono-Regular,Menlo,monospace;text-align:center}
dl.terms.keys dt{white-space:nowrap}
.dangerrow{margin-top:10px}
.btn.ghost.danger{background:none;color:var(--bad);border-color:var(--bad)}
/* Accessibility settings (Settings → Accessibility) */
html[data-motion="reduce"] *,html[data-motion="reduce"] *::before,html[data-motion="reduce"] *::after{animation-duration:.001ms!important;animation-iteration-count:1!important;animation-delay:0s!important;transition:none!important;scroll-behavior:auto!important}
html[data-motion="reduce"] .heroart .traveler{display:none}
html[data-links="on"] main a,html[data-links="on"] #app a,html[data-links="on"] footer a{text-decoration:underline;text-underline-offset:2px}
html[data-links="on"] #app a.btn,html[data-links="on"] #app a.stat,html[data-links="on"] #app a.card{text-decoration:none}
html[data-focusring="strong"] :focus-visible{outline:4px solid var(--ink)!important;outline-offset:3px!important;box-shadow:0 0 0 7px var(--accent)!important;border-radius:4px}
.savecard{border-left:5px solid var(--accent)}
.savedline{margin:6px 0 10px;color:var(--ok)}
.savedline a{color:inherit}
/* Title case: every word in headings, titles, subheadings and tabs starts with a capital letter. */
h1,h2,h3,h4,h5,h6,summary,nav.tabs a,nav.tabs button,.settabs a,.pickq,.qhead>strong,
.grow>strong:first-child,.flex>strong:first-child{text-transform:capitalize}
/* …but never change code, commands, keys or anything marked to keep its own casing. */
:is(h1,h2,h3,h4,h5,h6,summary,.grow>strong,.flex>strong) :is(code,kbd,samp,.nocap),.grow>strong.nocap,h1.nocap,.profhead .meta{text-transform:none}
/* Help widget (assets/support.js) */
.helpbtn{position:fixed;right:16px;bottom:calc(16px + env(safe-area-inset-bottom,0px));z-index:45;display:inline-flex;align-items:center;gap:6px;padding:9px 16px 9px 10px;border-radius:999px;border:0;background:var(--accent);color:var(--on-accent);font-weight:700;font-size:15px;box-shadow:0 4px 16px rgba(0,0,0,.18);cursor:pointer}
.helpbtn span{display:inline-grid;place-items:center;width:22px;height:22px;border-radius:50%;background:var(--on-accent);color:var(--accent);font-weight:800;font-size:14px}
.helpbtn[aria-expanded="true"]{box-shadow:0 0 0 3px var(--bg),0 0 0 5px var(--accent)}
.supportpanel{position:fixed;right:16px;bottom:calc(72px + env(safe-area-inset-bottom,0px));z-index:46;width:min(400px,calc(100vw - 32px));max-height:min(620px,calc(100vh - 110px));display:flex;flex-direction:column;background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:16px;box-shadow:0 12px 40px rgba(0,0,0,.25);overflow:hidden}
.supportpanel[hidden]{display:none}
.suphead{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid var(--line)}
.suphead h2{margin:0;font-size:18px}
.suphide{background:none;border:0;font-size:18px;color:var(--muted);min-width:36px;min-height:36px;border-radius:8px;cursor:pointer}
.supbody{padding:12px 14px 14px;overflow-y:auto}
.supbody .textin{margin-top:0}
.supqa{border-top:1px solid var(--soft);padding:8px 0}
.supqa:first-of-type{border-top:0}
.supqa summary{cursor:pointer;font-weight:700}
.supqa p{margin:6px 0 0}
.suplinks{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:14px}
.supchat{margin-top:12px;border-top:1px solid var(--line);padding-top:6px}
.suplog{display:flex;flex-direction:column;gap:8px;max-height:260px;overflow-y:auto;margin:6px 0 10px}
.suplog:empty{display:none}
.supmsg{max-width:88%;padding:8px 12px;border-radius:14px;font-size:15px;line-height:1.45}
.supmsg p{margin:0 0 6px}.supmsg p:last-child{margin:0}
.supmsg ul{margin:4px 0 6px;padding-left:18px}
.supmsg.me{align-self:flex-end;background:var(--accent);color:var(--on-accent)}
.supmsg.bot{align-self:flex-start;background:var(--soft)}
.supmsg.bot a{color:inherit}
.supmsg.typing span{display:inline-block;width:6px;height:6px;margin:0 2px;border-radius:50%;background:var(--muted);animation:fx-bob 1s ease-in-out infinite}
.supmsg.typing span:nth-child(2){animation-delay:.15s}.supmsg.typing span:nth-child(3){animation-delay:.3s}
@media (max-width:560px){.helpbtn{padding:9px 12px 9px 9px}.supportpanel{right:8px;left:8px;width:auto;bottom:calc(66px + env(safe-area-inset-bottom,0px));max-height:calc(100vh - 140px)}}
@media print{.helpbtn,.supportpanel{display:none!important}}
/* Help box on the home page and the Help page */
.helpcard .supresults{margin-top:10px}
.helpcard .suplog{max-height:360px}
/* Home page section tiles */
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:10px}
.tile{display:flex;flex-direction:column;gap:4px;padding:14px;border:1px solid var(--line);border-radius:14px;background:var(--surface);color:var(--ink);text-decoration:none}
.tile:hover{border-color:var(--accent)}
.tile .ico{width:26px;height:26px;color:var(--accent);margin-bottom:4px}
.tile strong{font-size:16px}
.tile .note{font-size:13px;line-height:1.35}
@media (max-width:420px){.tiles{grid-template-columns:1fr 1fr}.tile{padding:12px}}
/* Site menu (Menu button in the header) */
.menubtn{display:inline-flex;align-items:center;gap:6px;background:none;border:1.5px solid var(--line);border-radius:999px;padding:3px 10px;font-size:13px;font-weight:600;color:var(--ink);cursor:pointer}
.menubtn[aria-expanded="true"]{border-color:var(--accent)}
.burger{display:inline-flex;flex-direction:column;justify-content:center;gap:3px;width:16px}
.burger i{display:block;height:2px;border-radius:2px;background:currentColor}
.menushade{position:fixed;inset:0;z-index:57;background:rgba(10,15,20,.45)}
.menushade[hidden],.sitemenu[hidden]{display:none}
.sitemenu{position:fixed;top:0;right:0;bottom:0;z-index:58;width:min(340px,88vw);display:flex;flex-direction:column;background:var(--surface);color:var(--ink);border-left:1px solid var(--line);box-shadow:-12px 0 40px rgba(0,0,0,.2);padding-top:env(safe-area-inset-top,0px)}
.menuhead{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--line);font-size:18px}
.menubody{overflow-y:auto;padding:4px 16px 24px}
.menugroup{font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin:16px 0 6px}
.sitemenu ul{margin:0;padding:0;list-style:none}
.sitemenu li a{display:block;padding:8px 10px;border-radius:8px;color:var(--ink);text-decoration:none;font-weight:600}
.sitemenu li a:hover{background:var(--soft)}
.sitemenu li a[aria-current="page"]{background:var(--soft);box-shadow:inset 3px 0 0 var(--accent)}
html.menu-open{overflow:hidden}
@media (max-width:560px){.menubtn .mlabel{display:none}.menubtn{min-width:34px;min-height:34px;justify-content:center;padding:0}}
@media print{.menubtn,.sitemenu,.menushade{display:none!important}}

/* ---------- iOS and Android apps (assets/native.js adds .native-app) ---------- */
/* The app is already installed and updates through the store. */
html.native-app a[href="#install"],html.native-app .row:has(> a[href="#install"]),html.native-app #sitemenu li:has(> a[href="#install"]){display:none}

/* Class assignments on the Account page */
.assignlist{margin:4px 0 10px;padding-left:12px;border-left:3px solid var(--line)}
.assignlist li{margin:6px 0}
.assignlist li.done{border-left-color:var(--ok)}
.bars li{display:grid;grid-template-columns:48px 1fr 32px;gap:8px;align-items:center;margin:4px 0}
.bars li .track{margin-top:0;--c:var(--accent)}