:root{
  --paper:#F4F1EA; --paper-2:#ECE8DE; --card:#FAF8F3; --ink:#16181B; --muted:#5F5B53; --line:#D6D0C3;
  --asphalt:#1B1E22; --asphalt-2:#25292E; --on-dark:#EDEAE2; --on-dark-muted:#9C9A94;
  --yellow:#FFC20E; --green:#1F8A4C; --red:#C8102E; --blue:#1D57A5;
  --ok-bg:#E1EEDF; --bad-bg:#F5DEDD;
  /* scene: muted, realistic */
  --grass:#AEB39B; --walk:#CFCABD; --road:#3D4146; --mark:#ECE9E1; --curb:#9D988B;
  --display:'Noto Sans Armenian',system-ui,sans-serif;
  --body:'Noto Sans Armenian',system-ui,-apple-system,'Segoe UI',sans-serif;
  --mono:'JetBrains Mono',ui-monospace,Menlo,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}}
body{background:var(--paper);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.55;margin:0}
h1,h2,h3,h4{font-family:var(--display);margin:0;line-height:1.05;text-wrap:balance}
.cond{font-stretch:70%;font-weight:800;letter-spacing:-.005em}
.ref{font-family:var(--mono);font-size:12px;color:var(--muted);white-space:nowrap}
.lbl{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
a{color:inherit}
button{font:inherit;color:inherit;cursor:pointer}
:focus-visible{outline:3px solid var(--yellow);outline-offset:2px}
.container{max-width:1200px;margin:0 auto;padding-inline:16px}

/* ---------- header ---------- */
.top{background:var(--asphalt);color:var(--on-dark)}
.nav{display:flex;align-items:center;gap:20px;padding-block:14px;border-bottom:1px solid #2F3339}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.mark{width:17px;height:31px;flex:none;display:block}.brand-g{color:#2ECC71}

.brand b{font-family:var(--display);font-stretch:72%;font-weight:800;font-size:20px;letter-spacing:.01em}
.nav-links{margin-left:auto;display:flex;gap:4px;flex-wrap:wrap}
.nav-links a{font-family:var(--mono);font-size:12px;text-decoration:none;color:var(--on-dark-muted);padding:6px 10px;border-radius:4px}
.nav-links a:hover{color:var(--on-dark);background:#2A2E34}
@media (max-width:620px){.nav-links{display:none}}
.head{padding-block:56px 44px;display:grid;gap:22px}
.head .lbl{color:var(--yellow)}
.head h1{font-size:clamp(52px,10vw,132px);line-height:1.12;margin-bottom:.22em;font-stretch:68%;font-weight:900;text-transform:none}
.head h1 span{color:var(--yellow);display:block}
.head-row{display:flex;flex-wrap:wrap;gap:12px 28px;align-items:center}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border-radius:4px;font-weight:600;text-decoration:none;border:2px solid var(--yellow);background:var(--yellow);color:var(--ink)}
.btn.ghost{background:transparent;color:var(--on-dark);border-color:#4A4F56}
.btn.ghost:hover{border-color:var(--on-dark)}
.cite{font-family:var(--mono);font-size:12px;color:var(--on-dark-muted);max-width:60ch}
.lane{height:4px;background:repeating-linear-gradient(90deg,var(--on-dark) 0 48px,transparent 48px 84px);opacity:.75;margin-bottom:22px}
.hazard{height:14px;background:repeating-linear-gradient(-45deg,var(--yellow) 0 14px,var(--ink) 14px 28px)}

/* ---------- topics ---------- */
.topics-wrap{padding-block:36px 8px}
.topics-head{display:flex;justify-content:space-between;align-items:baseline;gap:16px;margin-bottom:14px;flex-wrap:wrap}
.topics{display:grid;grid-template-columns:repeat(auto-fill,minmax(172px,1fr));gap:10px}
.tile{display:grid;grid-template-rows:auto 1fr auto;gap:10px;min-height:118px;padding:12px 14px;border:1.5px dashed #B7B0A1;border-radius:4px;text-decoration:none;color:var(--muted)}
.tile .tn{font-family:var(--mono);font-size:12px}
.tile{min-width:0}
.tile .tt{font-family:var(--display);font-stretch:70%;font-weight:700;font-size:17px;line-height:1.12;color:var(--ink);opacity:.7;overflow-wrap:anywhere;hyphens:auto}
.grp .lbl{overflow-wrap:anywhere}
#topics-law{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:900px){#topics-law{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:440px){#topics-law{grid-template-columns:1fr}}
.tile .tag{justify-self:start;font-family:var(--mono);font-size:10px;letter-spacing:.08em;text-transform:uppercase;border:1px solid #B7B0A1;border-radius:3px;padding:1px 6px}
.tile.active{background:var(--yellow);border:1.5px solid var(--ink);color:var(--ink)}
.tile.active .tt{opacity:1}
.tile.active .tag{border-color:var(--ink);background:var(--ink);color:var(--yellow)}
.settings{display:flex;flex-wrap:wrap;gap:10px 28px;padding:14px 0 0}
.switch{display:inline-flex;align-items:center;gap:10px;background:none;border:0;padding:4px 0;font-size:14px}
.switch .track{width:40px;height:22px;border-radius:11px;background:#C9C2B3;position:relative;transition:background .2s;flex:none}
.switch .track::after{content:"";position:absolute;top:3px;left:3px;width:16px;height:16px;border-radius:50%;background:#fff;transition:transform .2s;box-shadow:0 1px 2px rgba(0,0,0,.25)}
.switch[aria-checked="true"] .track{background:var(--ink)}
.switch[aria-checked="true"] .track::after{transform:translateX(18px);background:var(--yellow)}

/* ---------- lesson ---------- */
main{display:grid;gap:64px;padding-block:44px 72px}
.lesson-head{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:20px 48px;align-items:end;padding-top:28px;border-top:1px solid var(--line)}
.lesson-head h2{overflow-wrap:normal;word-break:normal;hyphens:none;font-size:clamp(28px,3.6vw,48px);font-stretch:68%;font-weight:900;line-height:1.12;text-wrap:balance}
.lesson-head .sub{font-size:17px;color:var(--muted);margin-top:10px}
.lesson-head .lede{margin:0;font-size:17px;max-width:52ch}
@media (max-width:820px){.lesson-head{grid-template-columns:1fr}}

.sec-head{display:grid;grid-template-columns:auto 1fr auto;gap:16px;align-items:baseline;border-top:5px solid var(--ink);padding-top:14px;margin-bottom:22px}
.sec-head .letter{font-family:var(--mono);font-weight:700;font-size:13px;background:var(--ink);color:var(--yellow);padding:2px 8px;border-radius:2px;align-self:center}
.sec-head h3{font-size:clamp(24px,3.2vw,36px);font-stretch:72%;font-weight:800}
@media (max-width:560px){.sec-head{grid-template-columns:auto 1fr}.sec-head .ref{grid-column:1 / -1}}

/* ---------- scene ---------- */
.scene{border:1.5px solid var(--ink);border-radius:4px;overflow:hidden;background:var(--card)}
.stage{display:grid;grid-template-columns:104px minmax(0,1fr);background:var(--grass)}
.lamp-col{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;background:var(--asphalt);padding:12px 0}
.lamp-col svg{width:62px;height:auto;display:block}
.lamp-col .lbl{color:var(--on-dark-muted);font-size:9px}
.road svg{display:block;width:100%;height:auto}
@media (max-width:560px){.stage{grid-template-columns:72px minmax(0,1fr)}.lamp-col svg{width:44px}.lamp-col .lbl{display:none}}
.controls{display:flex;flex-wrap:wrap;gap:8px;padding:14px 16px;border-top:1.5px solid var(--ink);background:var(--paper-2)}
.sig{display:inline-flex;align-items:center;gap:9px;padding:7px 12px 7px 8px;border-radius:4px;border:1px solid #BDB6A7;background:var(--card);font-size:14px}
.sig:hover{border-color:var(--ink)}
.sig .dots{display:inline-flex;gap:3px;background:#0E1012;padding:4px 5px;border-radius:5px}
.sig .dot{width:9px;height:9px;border-radius:50%}
.sig[aria-pressed="true"]{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.sig.auto{margin-left:auto;font-weight:600}
.sig.auto .ic{font-size:10px;letter-spacing:-1px}
.sig.auto[aria-pressed="true"]{background:var(--yellow);color:var(--ink);border-color:var(--ink)}
.caption{display:grid;grid-template-columns:minmax(180px,.5fr) minmax(0,1.5fr);gap:12px 28px;align-items:start;padding:18px 20px 20px;border-top:1px solid var(--line);min-height:112px}
.cap-l{display:grid;gap:8px;justify-items:start}
.caption strong{font-family:var(--display);font-stretch:70%;font-weight:800;font-size:clamp(26px,3vw,36px);line-height:1}
.caption p{margin:0;max-width:66ch}
@media (max-width:640px){.caption{grid-template-columns:1fr}}
.status{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;padding:3px 8px;border-radius:3px;font-weight:700}
.status.go{background:var(--green);color:#fff}
.status.stop{background:var(--red);color:#fff}
.status.warn{background:var(--yellow);color:var(--ink)}
.g-grass{fill:var(--grass)} .g-walk{fill:var(--walk)} .g-road{fill:var(--road)} .g-mark{fill:var(--mark)} .g-curb{fill:var(--curb)}
.g-dash{stroke:var(--mark);stroke-width:3;stroke-dasharray:22 18;fill:none}
.g-lbl{fill:var(--ink);font-family:var(--mono);font-size:12px}

/* ---------- rules ---------- */
.rules{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
.rule{background:var(--paper);padding:20px;display:grid;gap:10px;align-content:start}
.rule-top{display:flex;align-items:center;justify-content:space-between;gap:10px}
.sw{display:inline-flex;gap:5px;background:#0E1012;padding:6px 8px;border-radius:8px}
.sw i{width:14px;height:14px;border-radius:50%;display:block;box-shadow:0 0 8px currentColor}
.rule h4{font-size:22px;font-stretch:72%;font-weight:800;margin-top:4px}
.rule p{margin:0;font-size:15px}
.blink{animation:bl 1s steps(2,start) infinite}
@keyframes bl{to{opacity:.2}}
@media (max-width:900px){.rules{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:580px){.rules{grid-template-columns:1fr}}
@media (prefers-reduced-motion: reduce){.blink{animation:none}}

/* ---------- controller ---------- */
.reg{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.reg-card{background:var(--card);border:1.5px solid var(--ink);border-radius:4px;overflow:hidden;display:grid;grid-template-rows:auto 1fr}
.reg-card svg{display:block;width:100%;height:auto;background:var(--grass);border-bottom:1.5px solid var(--ink)}
.reg-card .body{padding:16px 18px;display:grid;gap:8px;align-content:start}
.reg-card h4{font-size:21px;font-stretch:72%;font-weight:800}
.reg-card p{margin:0;font-size:14.5px}
.legend{display:flex;gap:10px 24px;flex-wrap:wrap;font-size:13px;color:var(--muted);margin-top:16px;font-family:var(--mono)}
.legend span{display:inline-flex;gap:8px;align-items:center}
.legend i{width:22px;height:4px;display:block}

/* ---------- quiz ---------- */
.quiz{background:var(--asphalt);color:var(--on-dark);border-radius:4px;padding:clamp(20px,3vw,36px);display:grid;gap:22px}
.qbar{display:flex;align-items:center;gap:14px;font-family:var(--mono);font-size:12px;color:var(--on-dark-muted)}
.qbar .track{flex:1;height:6px;background:#33373D;border-radius:0;overflow:hidden}
.qbar .fill{display:block;height:100%;background:var(--yellow);transition:width .35s}
.qnum{font-family:var(--mono);color:var(--yellow);font-size:13px}
.q{font-family:var(--display);font-stretch:78%;font-weight:700;font-size:clamp(22px,2.8vw,32px);line-height:1.2;max-width:34ch;margin-top:-12px}
.opts{display:grid;gap:8px}
.opt{text-align:left;padding:14px 16px;border-radius:4px;border:1px solid #3A3F46;background:var(--asphalt-2);color:var(--on-dark);display:grid;grid-template-columns:34px 1fr;gap:12px;align-items:center;font-size:16px}
.opt .k{font-family:var(--mono);font-weight:700;width:28px;height:28px;display:grid;place-items:center;border:1px solid #4A4F56;border-radius:3px;color:var(--yellow)}
.opt:hover:not([disabled]){border-color:var(--yellow)}
.opt[disabled]{cursor:default;opacity:.55}
.opt.right{opacity:1;background:#173524;border-color:#2FB36A}
.opt.right .k{background:#2FB36A;color:#0E1012;border-color:#2FB36A}
.opt.wrong{opacity:1;background:#3A171A;border-color:#E5484D}
.opt.wrong .k{background:#E5484D;color:#fff;border-color:#E5484D}
.explain{border-left:3px solid var(--yellow);padding:4px 0 4px 16px;display:grid;gap:6px;max-width:70ch}
.explain p{margin:0}
.explain .ref,.mist .ref{color:var(--on-dark-muted)}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.quiz .btn{border-color:var(--yellow)}
.res{display:flex;align-items:flex-end;gap:10px 28px;flex-wrap:wrap}
.score{font-family:var(--display);font-stretch:62.5%;font-weight:900;font-size:clamp(88px,14vw,150px);line-height:.8;color:var(--yellow)}
.score small{font-size:.4em;color:var(--on-dark-muted);font-weight:700}
.res-t{font-size:18px;max-width:34ch;padding-bottom:6px}
.mist{display:grid;border-top:1px solid #3A3F46}
.mist-h{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--on-dark-muted);padding:14px 0 6px}
.mist-i{display:grid;grid-template-columns:1fr auto;gap:2px 16px;padding:12px 0;border-bottom:1px solid #3A3F46}
.mist-i p{margin:0}
.mist-i .ans{color:#6FD69B;grid-column:1}
.mist-i .ref{grid-column:2;grid-row:1}


/* ---------- groups & law ---------- */
.grp{display:flex;gap:14px;align-items:center}
.grp-k{font-family:var(--mono);font-weight:700;font-size:13px;width:34px;height:34px;display:grid;place-items:center;background:var(--ink);color:var(--yellow);border-radius:2px}
.grp-t{font-family:var(--display);font-stretch:70%;font-weight:800;font-size:24px;line-height:1}
.tile{cursor:pointer}
.tile.soon{cursor:default}
.tile.law{border-style:solid;border-color:#B7B0A1;background:var(--card);color:var(--muted)}
.tile.law .tt{opacity:1}
.tile.law:hover{border-color:var(--ink)}
.tile.law .tag.now{border-color:var(--green);color:var(--green)}
.tile.active{background:var(--yellow)!important;border:1.5px solid var(--ink)!important;color:var(--ink)}
.tile.active .tag{border-color:var(--ink)!important;background:var(--ink);color:var(--yellow)!important}
.view{display:grid;gap:64px}
.view[hidden]{display:none!important}
.art{font-family:var(--display);font-weight:800;font-size:18px;width:30px;height:30px;display:grid;place-items:center;background:var(--ink);color:var(--yellow);border-radius:2px}
.tool{border:1.5px solid var(--ink);border-radius:4px;background:var(--card);padding:clamp(16px,2.4vw,28px);display:grid;gap:22px}
.tool-grid{display:grid;grid-template-columns:minmax(240px,.8fr) minmax(0,1.6fr);gap:24px;align-items:start}
@media (max-width:820px){.tool-grid{grid-template-columns:1fr}}
.tool-panel{display:grid;gap:10px;align-content:start}
.age-row{display:flex;align-items:center;gap:16px}
.age-row input{flex:1;accent-color:var(--ink);height:28px}
.big-num{font-family:var(--display);font-stretch:62.5%;font-weight:900;font-size:56px;line-height:.9;min-width:2.2ch;text-align:right}
.checks{display:grid;gap:8px;font-size:15px}
.checks input{accent-color:var(--ink);width:17px;height:17px;vertical-align:-3px;margin-right:6px}
.hint{font-size:14px;color:var(--muted);margin:4px 0 0}
.muted{color:var(--muted)}
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px}
.cat{display:grid;gap:4px;padding:10px 12px;border-radius:4px;border:1px solid var(--line);background:var(--paper);transition:background .25s,border-color .25s,opacity .25s}
.cat-c{font-family:var(--display);font-stretch:68%;font-weight:900;font-size:26px;line-height:1}
.cat-d{font-size:12.5px;line-height:1.35}
.cat-s{font-family:var(--mono);font-size:10.5px;letter-spacing:.04em;text-transform:uppercase}
.cat.ok{background:#E1EEDF;border-color:var(--green)} .cat.ok .cat-s{color:var(--green)}
.cat.cond{background:#FFF4CF;border-color:#D9A400} .cat.cond .cat-s{color:#7A5C00}
.cat.no{opacity:.55} .cat.no .cat-s{color:var(--muted)}
.scen{display:grid;gap:10px;border-top:1px solid var(--line);padding-top:18px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{padding:8px 12px;border-radius:4px;border:1px solid #BDB6A7;background:var(--paper);font-size:14px;text-align:left}
.chip:hover{border-color:var(--ink)}
.chip[aria-pressed="true"]{background:var(--ink);color:var(--paper);border-color:var(--ink)}.chip-lock{opacity:.75;border-style:dashed}.lock-box{border:1.5px dashed var(--ink);border-radius:6px;padding:28px 22px;text-align:center;display:grid;gap:10px;justify-items:center;background:var(--card)}.lock-box h3{font-size:22px}.lock-box p{margin:0;max-width:52ch;color:var(--muted)}.lock-i{font-size:34px}.ex-why.lockd{border-left-color:var(--yellow)}.ex-why.lockd p{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.anim-box{min-width:0}.anim-box>*{min-width:0}.scen-out .ref{white-space:normal;overflow-wrap:anywhere}.scen-out>span:not(.mk-cross):not(.ref){min-width:0;flex:1 1 260px}
.scen-out{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;min-height:56px;padding:14px 16px;background:var(--paper-2);border-radius:4px}
.cat-badge{font-family:var(--display);font-stretch:68%;font-weight:900;font-size:30px;line-height:1;background:var(--yellow);padding:4px 12px;border:1.5px solid var(--ink);border-radius:3px}
/* deck */
.deck{display:grid;gap:14px;max-width:760px}
.deck-top{display:flex;justify-content:space-between}
.deck-card{min-height:150px;display:grid;place-items:center;padding:24px;border-radius:6px;background:var(--asphalt);color:var(--on-dark);text-align:center;transition:background .3s,transform .3s}
.deck-card.in{animation:dk .35s ease-out}
@keyframes dk{from{transform:translateY(8px);opacity:0}}
.deck-card.good{background:#173524}.deck-card.bad{background:#3A171A}
.deck-q{font-family:var(--display);font-stretch:78%;font-weight:700;font-size:clamp(20px,2.6vw,28px);line-height:1.2;max-width:28ch}
.deck-btns .btn{flex:1;justify-content:center}
.btn.yes{background:var(--green);border-color:var(--green);color:#fff}
.btn.no{background:var(--red);border-color:var(--red);color:#fff}
.btn[disabled]{opacity:.45;cursor:default}
.btn.ghost-d{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn.ghost-p{background:transparent;color:var(--ink);border-color:#BDB6A7}
.verdict{font-size:16px}
.verdict.go strong{color:var(--green)}.verdict.stop strong{color:var(--red)}
#dkOut p{margin:6px 0}
/* tree */
.tree{display:grid;gap:14px;max-width:820px}
.tree-first{padding:16px 18px;border-left:5px solid var(--yellow);background:var(--paper-2);border-radius:2px}
.steps{margin:8px 0 0;padding-left:22px;display:grid;gap:6px}
.steps li::marker{font-family:var(--mono);font-weight:700}
.tree-done{display:flex;justify-content:space-between;gap:16px;padding:10px 14px;border:1px dashed #B7B0A1;border-radius:4px;font-size:14px;color:var(--muted)}
.tree-done b{color:var(--ink);white-space:nowrap}
.tree-q{display:grid;gap:12px;padding:18px;border:1.5px solid var(--ink);border-radius:4px;animation:dk .3s ease-out}
.tq{font-family:var(--display);font-stretch:78%;font-weight:700;font-size:22px;line-height:1.2}
.tree-end{padding:18px 20px;border-radius:4px;color:var(--on-dark);background:var(--asphalt);display:grid;gap:8px;animation:dk .3s ease-out}
.tree-end .ref{color:var(--on-dark-muted)}
.te-h{font-family:var(--display);font-stretch:70%;font-weight:800;font-size:28px}
.tree-end.stop .te-h{color:#FF8A8F}.tree-end.warn .te-h{color:var(--yellow)}.tree-end.go .te-h{color:#6FD69B}
.timer{margin-top:6px}
.timer .lbl{color:var(--on-dark-muted)}
.tbar{height:10px;background:#33373D;margin-top:6px;overflow:hidden}
.tbar i{display:block;height:100%;width:0;background:var(--yellow);animation:tb 15s linear forwards}
@keyframes tb{to{width:100%}}
.tlbl{display:flex;justify-content:space-between;font-family:var(--mono);font-size:11px;color:var(--on-dark-muted);margin-top:4px}
/* walk */
.walk-stage{border:1.5px solid var(--ink);border-radius:4px;overflow:hidden}
.walk-stage svg{display:block;width:100%;height:auto}
/* ride */
.ride-out{display:grid;gap:8px;align-content:start}
.rv{font-family:var(--display);font-stretch:72%;font-weight:800;font-size:24px;line-height:1.1;padding:10px 14px;background:#E1EEDF;border-left:5px solid var(--green)}
.rv.bad{background:#F5DEDD;border-left-color:var(--red)}
.rv2{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-top:8px}
.where{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.where li{display:grid;grid-template-columns:26px 1fr;gap:10px;align-items:start;font-size:15px;padding:8px 10px;background:var(--paper);border-radius:3px}
.where .mk{width:22px;height:22px;display:grid;place-items:center;border-radius:50%;font-size:12px;font-weight:700;color:#fff}
.where .y .mk{background:var(--green)}.where .c .mk{background:#D9A400}.where .n .mk{background:var(--red)}
/* inspection */
.insp-out{display:grid;gap:18px}
.big-line{font-size:19px;line-height:1.4}
.big-line b{font-family:var(--display);font-stretch:72%;font-weight:800;font-size:1.25em}
.tl{display:flex;flex-wrap:wrap;gap:4px;align-items:flex-end}
.tl-c{display:grid;justify-items:center;gap:4px;width:44px}
.tl-c i{width:100%;height:18px;background:var(--paper-2);border:1px solid var(--line)}
.tl-c.on i,.tl-c.first i{background:var(--ink);border-color:var(--ink)}
.tl-c.first i{background:var(--ink)}
.tl-c.half i{background:repeating-linear-gradient(90deg,var(--ink) 0 20px,var(--paper-2) 20px 24px)}
.tl-c span{font-family:var(--mono);font-size:10px;color:var(--muted)}
.tl-c.now span{color:var(--ink);font-weight:700;border-bottom:2px solid var(--yellow)}
.tl-leg{flex-basis:100%;display:flex;gap:16px;flex-wrap:wrap;font-family:var(--mono);font-size:11px;color:var(--muted);margin-top:8px}
.tl-leg span{display:inline-flex;gap:6px;align-items:center}
.tl-leg i{width:14px;height:10px;display:inline-block;background:var(--ink)}
.tl-leg i.half{background:repeating-linear-gradient(90deg,var(--ink) 0 5px,var(--paper-2) 5px 7px)}
.tl-leg i.now{background:transparent;border-bottom:3px solid var(--yellow);height:8px}
/* police */
.pol{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px 28px}
.pol-steps{grid-column:1 / -1;padding:16px 18px;border-left:5px solid var(--yellow);background:var(--paper-2)}
.pol-list{display:grid;gap:6px;margin-top:8px}
.pol-b{text-align:left;padding:10px 12px;border-radius:4px;border:1px solid #BDB6A7;background:var(--paper);font-size:14.5px}
.pol-b:hover{border-color:var(--ink)}
.pol-b[aria-pressed="true"]{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.pol-out{align-self:start;position:sticky;top:16px;flex-direction:column;align-items:flex-start;min-height:120px;font-size:16px}
@media (max-width:760px){.pol{grid-template-columns:1fr}.pol-out{position:static}}
.pager{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:24px}

/* crossings */
.xs-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px;align-items:start}
@media (max-width:820px){.xs-grid{grid-template-columns:1fr}}
.xs-stage{border:1.5px solid var(--ink);border-radius:4px;overflow:hidden;max-width:520px}
.xs-stage svg{display:block;width:100%;height:auto}
.xs-side{display:grid;gap:14px;align-content:start}
.xs-d{font-size:16px}
#xsO p{margin:6px 0}
.btn.pick-ok{background:var(--green);border-color:var(--green);color:#fff;opacity:1}
.btn.pick-bad{background:var(--red);border-color:var(--red);color:#fff;opacity:1}

.sp-out{display:grid;gap:14px}
.sp-vis{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:16px;align-items:center}
.sp-vis svg{width:100%;height:auto;display:block}
.sp-sign{max-width:160px;justify-self:center}
.sp-road{border:1.5px solid var(--ink);border-radius:4px;overflow:hidden}
.sp-road svg{display:block;width:100%;height:auto}
.chip[disabled]{opacity:.45;cursor:default}
.sub-h{font-family:var(--display);font-stretch:72%;font-weight:800;font-size:22px;border-top:1px solid var(--line);padding-top:18px}
.kid-out{display:grid;grid-template-columns:180px minmax(0,1fr);gap:20px;align-items:start}
.kid-out svg{width:100%;height:auto}
@media (max-width:560px){.kid-out{grid-template-columns:120px minmax(0,1fr)}}
.sg-top{justify-content:space-between;align-items:flex-start}
.sg-q{flex:1 1 280px;max-width:420px;padding:10px 12px;border:1.5px solid var(--ink);border-radius:4px;font:inherit;background:var(--paper)}
.sg-list{list-style:none;margin:0;padding:0;display:grid;gap:1px;background:var(--line);border:1px solid var(--line);max-height:620px;overflow:auto}
.sg-i{display:grid;grid-template-columns:auto 1fr;gap:12px;padding:10px 12px;background:var(--paper)}
.sg-i b{font-weight:600}
.sg-i p{margin:2px 0 0;font-size:14px;color:var(--muted)}
.sg-n{font-family:var(--mono);font-size:12px;font-weight:700;background:var(--ink);color:var(--yellow);padding:2px 6px;border-radius:2px;height:fit-content;max-width:120px;white-space:normal}
.sg-head{margin:4px 0 14px;color:var(--muted);max-width:75ch}
.sg-rows{border-top:1px solid var(--line);background:#fff}
.sg-row{display:grid;grid-template-columns:170px minmax(0,1fr);gap:22px;align-items:start;padding:22px 18px;border-bottom:1px solid var(--line)}
.sg-pic{all:unset;cursor:zoom-in;display:flex;justify-content:center;align-items:center;min-height:120px;border-radius:4px}
.sg-pic:focus-visible{outline:2px solid var(--ink);outline-offset:4px}
.sg-imgs{display:flex;flex-wrap:wrap;justify-content:center;align-items:flex-end;gap:10px 12px}
.sg-imgs figure{margin:0;display:flex;flex-direction:column;align-items:center;gap:4px}
.sg-imgs img{display:block;width:150px;height:124px;object-fit:contain}
.sg-imgs.multi{flex-direction:column;align-items:center}.sg-imgs.multi img{width:160px;height:86px}
.sg-imgs.many{display:grid;grid-template-columns:repeat(3,auto);flex-direction:initial}
.sg-imgs.many img{width:46px;height:54px}
.sg-imgs figcaption{font-family:var(--mono);font-size:10.5px;color:var(--muted)}
.sg-body h4{margin:2px 0 8px;font-size:17px;line-height:1.35;font-weight:700}
.sg-body p{margin:0;font-size:14.5px;line-height:1.6;color:#3a3d42}
.sg-body .lbl{display:block;margin-bottom:4px}
.sg-foot{margin-top:18px}
.sg-body p.sg-gen{color:var(--muted)}
.srt-btns{flex-wrap:wrap}.lmap{display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}.lmap-r{display:grid;grid-template-columns:52px 1fr;gap:14px;padding:14px 16px;background:#fff;color:inherit;text-decoration:none}a.lmap-r:hover{background:var(--paper-2)}.lmap-n{font-family:var(--mono);font-weight:700;font-size:18px;background:var(--ink);color:var(--yellow);border-radius:3px;text-align:center;height:fit-content;padding:4px 0}.lmap-r b{display:block;font-size:16px}.lmap-r p{margin:4px 0 0;color:var(--muted);font-size:14px}
.hero .cite,.cite{flex-basis:100%;max-width:none}.cite a{color:var(--yellow);text-decoration:underline;text-underline-offset:3px}.cite a:hover{color:#fff}
.flt-stage svg{max-height:340px}.flt-h{cursor:pointer}.flt-h.on circle{fill:#16181B}.flt-h.on text:first-of-type{fill:#FFC20E}.flt-out{background:#fff;border:1px solid var(--line);border-radius:4px;padding:14px 18px}.flt-out h4{margin:0 0 8px;font-size:18px}.flt-out ul{margin:0;padding-left:20px;display:grid;gap:6px;font-size:14.5px;line-height:1.5}
.ex-cat{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0 0}.ex-cat-t{grid-column:1/-1;margin:0 0 4px}.ex-navw .ex-groups{margin-top:10px}@media (max-width:520px){.ex-cat-b{flex-direction:column;gap:2px}}.ex-cat-b{flex:1 1 140px;display:flex;align-items:baseline;gap:12px;padding:10px 14px;border:1.5px solid #B7B0A1;border-radius:6px;background:var(--card);color:inherit;text-decoration:none;font:inherit;cursor:pointer;text-align:left}.ex-cat-b b{font-size:22px;letter-spacing:.03em;line-height:1.1}.ex-cat-b span{font-size:13.5px;color:var(--muted)}.ex-cat-b[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:var(--paper)}.ex-cat-b[aria-pressed="true"] span{color:inherit;opacity:.8}.ex-cat-b:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
.ex-groups{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 14px}.ex-groups .chip{text-decoration:none;color:inherit}.ex-groups .chip[aria-pressed="true"]{color:#fff}.ex-groups .ex-mix{border-color:var(--ink);font-weight:700}.ps-plate{display:flex;justify-content:center}.ps-plate canvas{width:min(100%,340px);height:auto;aspect-ratio:1;border-radius:50%}
.ex-bar{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;margin-bottom:12px}.ex-stat{display:flex;gap:14px;align-items:center;font-family:var(--mono);font-size:13px}.ex-stat .ok{color:#1E7B3A;font-weight:700}.ex-stat .bad{color:#B3261E;font-weight:700}
.ex-card{background:#fff;border:1.5px solid var(--ink);border-radius:6px;padding:18px 20px;display:grid;gap:14px}.ex-top{display:grid;gap:8px}.ex-prog{height:5px;background:var(--line);border-radius:3px;overflow:hidden}.ex-prog i{display:block;height:100%;background:var(--yellow)}
.ex-img{display:flex;justify-content:center;background:#F7F8F9;border-radius:4px;padding:8px}.ex-img img{display:block;max-width:100%;width:520px;height:auto;border-radius:3px}
.ex-q{margin:0;font-size:19px;line-height:1.4}.ex-opts{display:grid;gap:8px}.ex-o{display:grid;grid-template-columns:32px 1fr;gap:10px;align-items:center;text-align:left;font:inherit;font-size:15.5px;line-height:1.4;padding:10px 12px;border:1.5px solid var(--line);border-radius:5px;background:var(--paper);cursor:pointer;color:inherit}.ex-o:hover:not([disabled]){border-color:var(--ink)}.ex-o .n{display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--ink);color:var(--yellow);font-family:var(--mono);font-weight:700;font-size:13px}
.ex-o.right{border-color:#1E7B3A;background:#E7F5EC}.ex-o.right .n{background:#1E7B3A;color:#fff}.ex-o.wrong{border-color:#B3261E;background:#FDECEA}.ex-o.wrong .n{background:#B3261E;color:#fff}.ex-o[disabled]{cursor:default}
.ex-why{border-left:5px solid var(--green);background:var(--card);border-radius:4px;padding:12px 14px;animation:exWhy .35s ease-out both}.ex-why.bad{border-left-color:var(--red)}.ex-why-h{font-weight:800;font-size:13px;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);margin-bottom:4px}.ex-why p{margin:0;line-height:1.55;font-size:16px}.ex-ref{margin-top:8px;font-size:13px;color:var(--blue);font-weight:700}.ex-note{margin-top:8px;font-size:13px;color:#7A5A00;background:#FFF4CC;border-radius:4px;padding:6px 8px}@keyframes exWhy{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}@media (prefers-reduced-motion:reduce){.ex-why{animation:none}}
.ex-fb{min-height:26px;display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center}.ex-fb .mk-cross{margin:0;padding:4px 10px;line-height:1.3}.ex-fb .ex-ans{font-weight:600;line-height:1.3}.ex-nav{display:flex;justify-content:space-between;gap:10px}.ex-empty{text-align:center;padding:30px 10px;font-size:18px}.ex-score{font-size:56px;font-weight:900;font-family:var(--display)}
.ex-dots{display:flex;flex-wrap:wrap;gap:4px;margin-top:14px}.ex-dot{width:34px;height:28px;border:1px solid var(--line);border-radius:3px;background:#fff;font:inherit;font-family:var(--mono);font-size:11px;cursor:pointer;color:inherit}.ex-dot.ok{background:#E7F5EC;border-color:#1E7B3A}.ex-dot.bad{background:#FDECEA;border-color:#B3261E}.ex-dot.cur{outline:2px solid var(--ink)}
#topics-exam{grid-template-columns:repeat(4,minmax(0,1fr))}@media (max-width:900px){#topics-exam{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:440px){#topics-exam{grid-template-columns:1fr}}.ex-mix-t{border-color:var(--ink)!important}
@media (max-width:600px){.ex-card{padding:14px}.ex-q{font-size:16.5px}.ex-o{font-size:14.5px}}
.to-top{position:fixed;right:18px;bottom:18px;z-index:60;width:48px;height:48px;border-radius:50%;border:2px solid var(--ink);background:var(--yellow);color:var(--ink);display:grid;place-items:center;cursor:pointer;box-shadow:0 6px 18px rgba(22,24,27,.25);transition:transform .15s}.to-top:hover{transform:translateY(-3px)}.to-top[hidden]{display:none}@media (max-width:600px){.to-top{right:12px;bottom:12px;width:44px;height:44px}}
.tgrp[hidden]{display:none}
.tow{display:grid;gap:12px}.tw-sl{display:grid;gap:6px;font-weight:600}.tw-sl input{width:100%;accent-color:var(--ink)}.tw-opts{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:14.5px}.tw-opts label{display:flex;gap:6px;align-items:center}.cg-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px 22px}.id-sig{display:block;width:150px;height:124px;object-fit:contain}@media (max-width:600px){.id-sig{width:92px;height:84px}}
.anim-box{display:grid;gap:12px;margin-bottom:28px;padding-bottom:26px;border-bottom:1.5px solid var(--ink)}.anim-box .scen-out .mk-cross{margin:0}
.mk-ex{margin:0 0 18px}.mk-ex .lbl{margin-bottom:8px}.mk-ex-g{display:grid;grid-template-columns:1fr 1fr;gap:14px}.mk-leg{display:grid;gap:6px;padding:12px 14px;border-top:1px solid var(--line);font-size:13.5px;line-height:1.45}.mk-leg div{display:grid;grid-template-columns:48px 1fr;gap:8px}.mk-leg b{font-family:var(--mono);background:var(--yellow);color:var(--ink);border-radius:3px;text-align:center;height:fit-content;font-size:12px;padding:1px 0}
.mk-ex-g figure{margin:0;border:1px solid var(--line);border-radius:4px;overflow:hidden;background:#fff}.mk-ex-g svg{display:block;width:100%;height:auto}@media (max-width:760px){.mk-ex-g{grid-template-columns:1fr}}
.mk-pic svg{display:block;width:150px;height:112px;border-radius:4px}
.sg-mpics.mk-big svg{width:min(100%,440px);height:auto;border-radius:6px}
.q-mk svg{display:block;width:180px;height:135px;border-radius:4px;margin:0 0 12px}
.mk-cross{display:inline-block;font-size:12.5px;font-weight:700;padding:3px 9px;border-radius:3px;margin:0 0 8px;border:1.5px solid currentColor}
.mk-cross.no{color:#B3261E;background:#FDECEA}.mk-cross.yes{color:#1E7B3A;background:#E7F5EC}.mk-cross.part{color:#8A5A00;background:#FFF4D6}
@media (max-width:600px){.mk-pic svg{width:92px;height:69px}}

.sg-gnav{display:flex;justify-content:space-between;gap:12px;margin-top:22px}
.sg-gbtn{display:grid;gap:4px;text-align:left;font:inherit;color:var(--ink);background:#fff;border:1.5px solid var(--ink);border-radius:4px;padding:14px 18px;cursor:pointer;min-width:0;flex:0 1 48%}
.sg-gbtn.next{text-align:right;margin-left:auto;background:var(--yellow)}
.sg-gbtn b{font-size:17px}
.sg-gbtn:hover{box-shadow:0 6px 18px rgba(22,24,27,.14)}
@media (max-width:600px){.sg-gbtn{padding:10px 12px}.sg-gbtn b{font-size:14px}}
.sg-modal{background:var(--paper);color:var(--ink);width:min(760px,100%);max-height:92vh;overflow:auto;border-radius:6px;border-top:6px solid var(--yellow);padding:18px 22px 22px;display:grid;gap:16px}
.sg-mbar{display:flex;justify-content:space-between;align-items:center;gap:12px}
.sg-mpics{display:flex;justify-content:center;background:#fff;border:1px solid var(--line);border-radius:4px;padding:26px 16px}
.sg-mpics .sg-imgs img{width:min(100%,420px);height:min(42vh,300px)}
.sg-mpics .sg-imgs.multi img{width:min(100%,380px);height:150px}
.sg-mpics .sg-imgs.many img{width:110px;height:130px}
.sg-mtxt h4{margin:0 0 8px;font-size:21px;line-height:1.3}
.sg-mtxt p{margin:0;font-size:16px;line-height:1.55}
.sg-mnav{display:flex;justify-content:space-between;gap:10px}
@media (max-width:600px){.sg-row{grid-template-columns:96px minmax(0,1fr);gap:14px;padding:16px 10px}.sg-pic{min-height:80px}.sg-imgs img{width:92px;height:84px}.sg-imgs.multi img{width:92px;height:44px}.sg-imgs.many img{width:28px;height:40px}.sg-body h4{font-size:15px}.sg-body p{font-size:13.5px}}
.sg-notes{font-size:14px}
.sg-notes summary{cursor:pointer;font-weight:600}
.sg-notes p{margin:8px 0}
.zoom{position:fixed;inset:0;background:rgba(22,24,27,.85);z-index:50;display:grid;place-items:center;padding:16px;gap:10px;align-content:center}
.zoom[hidden]{display:none!important}
.zoom img{max-width:min(1100px,100%);max-height:85vh;background:#fff;border-radius:4px}
.q-sign{display:block;margin:0 0 12px;background:#fff;border-radius:6px;padding:6px}
/* ---------- footer ---------- */
.site-foot{margin-top:40px;background:var(--asphalt);color:var(--on-dark)}
.sf-lane{margin:22px 0 0}
.sf-in{padding-block:30px 26px}
.sf-grid{display:grid;grid-template-columns:1fr 1.15fr 1.35fr;gap:28px 40px}
@media (max-width:860px){.sf-grid{grid-template-columns:1fr}}
.sf-logo{display:flex;align-items:center;gap:10px}.sf-logo svg{width:18px;height:33px}
.sf-logo b{font-family:var(--display);font-stretch:72%;font-weight:800;font-size:24px}.sf-logo b span{color:#2ECC71}
.site-foot p{margin:10px 0 0;color:var(--on-dark-muted);font-size:14.5px;line-height:1.55}
.sf-h{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--yellow);margin-bottom:4px}
.sf-mail{display:inline-flex;align-items:center;gap:10px;margin-top:14px;padding:12px 16px;border-radius:6px;background:var(--yellow);color:var(--ink);font-weight:700;font-size:15px;text-decoration:none;white-space:nowrap;max-width:100%}
.sf-mail:hover{background:#fff}
.sf-src ul{list-style:none;margin:10px 0 0;padding:0;display:grid;gap:12px}
.sf-src li{display:grid;gap:2px}
.sf-src a{color:var(--on-dark);font-weight:600;text-decoration:none;border-bottom:1px solid #4A4F56;justify-self:start}
.sf-src a:hover{color:var(--yellow);border-color:var(--yellow)}
.sf-src span{font-size:12.5px;color:var(--on-dark-muted)}
.sf-note{margin-top:26px;padding-top:16px;border-top:1px solid #2F3339}
.sf-note p{font-size:12.5px;max-width:110ch}
.sf-copy{font-family:var(--mono)}
.sf-grid>*{min-width:0}.sf-src a{overflow-wrap:anywhere}
@media (max-width:400px){.sf-in{padding-block:24px 18px}.sf-mail{font-size:13.5px;padding:10px 12px;gap:8px}}