/* Citizenship Interview Prep v2 — design system
   Palette taken from the documents of naturalization: passport navy, certificate gold, security-paper blue. */
:root{
  --ink:#13294B; --ink-2:#2B416A; --muted:#55627A; --paper:#EEF2F7; --surface:#FFFFFF; --sunk:#E3E9F1; --line:#D3DBE6;
  --gold:#8C6A17; --gold-hi:#C9A043; --gold-soft:#F4ECD6; --brand:#004AAD; --on-brand:#fff; --brand-soft:#E2EBF8;
  --ok:#1C6E4C; --ok-soft:#E0F1E8; --bad:#A8261E; --bad-soft:#F8E3E1; --warn:#8A5A0B;
  --guil:rgba(19,41,75,.07);
  --art-b:var(--brand); --art-c:#F6F1E4; --art-r:#B3261E; --art-g:#C9A043; --art-s:#E6ECF4; --art-k:#13294B; --art-w:#ffffff; --art-t:#13294B;
  --f-body:"Atkinson Hyperlegible Next","Atkinson Hyperlegible",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-disp:"Source Serif 4","Iowan Old Style",Georgia,serif;
  --r-s:10px; --r-m:16px; --r-l:26px;
  --sh:0 1px 0 rgba(19,41,75,.04),0 8px 24px -14px rgba(19,41,75,.35);
  --nav-h:68px; color-scheme:light;
}
:root[dir="rtl"]{--f-body:"IBM Plex Sans Arabic","Atkinson Hyperlegible Next",system-ui,sans-serif;--f-disp:"Noto Naskh Arabic","IBM Plex Sans Arabic",serif}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --ink:#E6ECF5; --ink-2:#BCC8DB; --muted:#9AA7BD; --paper:#0D1524; --surface:#152038; --sunk:#1B2742; --line:#2A3858;
  --gold:#DDB65C; --gold-hi:#E7C36A; --gold-soft:#2E2715; --brand:var(--brand-dark,#86AEF5); --on-brand:#0A1428; --brand-soft:#1D2D4E;
  --ok:#6FD3A0; --ok-soft:#133126; --bad:#F09088; --bad-soft:#3A1E1D; --guil:rgba(230,236,245,.05);
  --art-c:#2A3550; --art-s:#1B2742; --art-k:#D5DEEC; --art-w:#33415F; --art-t:#E6ECF5; --art-b:#5E8FE6;
  --sh:0 1px 0 rgba(0,0,0,.2),0 10px 28px -16px rgba(0,0,0,.7); color-scheme:dark}}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
html,body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.55 var(--f-body);-webkit-tap-highlight-color:transparent}
body{min-height:100vh}
button,input,select{font:inherit;color:inherit}
img{max-width:100%;height:auto}
a{color:var(--brand)}
[hidden]{display:none!important}
:focus-visible{outline:3px solid var(--gold-hi);outline-offset:2px;border-radius:6px}
[lang="en"]{font-family:"Atkinson Hyperlegible Next","Atkinson Hyperlegible",system-ui,sans-serif}
.disp,h1,h2,h3{font-family:var(--f-disp);font-weight:650;letter-spacing:-.005em;line-height:1.15;margin:0}
h1{font-size:clamp(1.9rem,5.6vw,2.9rem)}
h2{font-size:clamp(1.4rem,3.6vw,1.8rem)}
h3{font-size:1.18rem}
p{margin:0}
.muted{color:var(--muted)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.loading{display:grid;place-items:center;min-height:70vh;color:var(--muted)}

/* ---------- shell ---------- */
.shell{display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:auto 1fr;min-height:100vh}
.top{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--paper) 86%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.topin{display:flex;align-items:center;gap:10px;max-width:1120px;margin:0 auto;padding:10px 16px}
.brandmark{display:flex;align-items:center;gap:10px;min-width:0;flex:1 1 auto;text-decoration:none;color:inherit;background:none;border:0;padding:0;cursor:pointer;text-align:start}
.brandmark>span{min-width:0;display:block}
.brandmark img{width:40px;height:40px;border-radius:10px;object-fit:cover;flex:0 0 auto}
.brandmark b{display:block;font-weight:700;font-size:.98rem;line-height:1.2;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brandmark small{display:block;color:var(--muted);font-size:.8rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ib{appearance:none;border:0;background:transparent;width:44px;height:44px;border-radius:12px;display:grid;place-items:center;cursor:pointer;flex:0 0 auto;color:var(--ink)}
.ib:hover{background:var(--sunk)} .ib svg{width:22px;height:22px}
[dir="rtl"] .flipx{transform:scaleX(-1)}
.langsel{position:relative;flex:0 0 auto}
.langsel select{appearance:none;border:1.5px solid var(--line);background:var(--surface);border-radius:999px;padding:8px 34px 8px 14px;font-weight:700;font-size:.88rem;cursor:pointer}
[dir="rtl"] .langsel select{padding:8px 14px 8px 34px}
.langsel svg{position:absolute;inset-inline-end:11px;top:50%;width:14px;height:14px;transform:translateY(-50%);pointer-events:none;color:var(--muted)}
.prog{height:3px;background:var(--line)} .prog i{display:block;height:100%;background:var(--gold-hi);transition:width .35s ease}

.body{display:grid;grid-template-columns:minmax(0,1fr);max-width:1120px;margin:0 auto;width:100%}
main{min-width:0;padding:18px 16px calc(var(--nav-h) + 36px)}
.nav{position:fixed;inset-inline:0;bottom:0;z-index:30;background:var(--surface);border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(5,1fr);padding:4px 4px max(4px,env(safe-area-inset-bottom))}
.nav button{appearance:none;border:0;background:none;display:flex;flex-direction:column;align-items:center;gap:2px;padding:7px 2px;border-radius:12px;font-size:.72rem;font-weight:700;color:var(--muted);cursor:pointer;min-height:56px}
.nav button svg{width:24px;height:24px}
.nav button[aria-current="page"]{color:var(--brand)}
.nav button[aria-current="page"] svg{stroke-width:2.4}
.nav.hide{display:none}
@media (min-width:920px){
  .body{grid-template-columns:220px minmax(0,1fr);gap:28px;padding:0 20px}
  main{padding:26px 0 60px}
  .nav{position:sticky;top:74px;align-self:start;display:flex;flex-direction:column;gap:4px;background:none;border:0;padding:26px 0}
  .nav button{flex-direction:row;justify-content:flex-start;gap:12px;font-size:1rem;padding:11px 14px;min-height:0;text-align:start}
  .nav button[aria-current="page"]{background:var(--surface);box-shadow:var(--sh)}
  .nav.hide{display:flex;visibility:hidden}
}
.wrap{max-width:820px}
.wide{max-width:none}

/* ---------- surfaces ---------- */
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:20px;box-shadow:var(--sh)}
.panel+.panel,.panel+.sect,.sect+.panel{margin-top:16px}
.sect{margin-top:30px}
.sect>h2{margin-bottom:12px}
.sect>.muted{margin:-6px 0 14px}
.stack>*+*{margin-top:12px}

/* guilloche security-paper band (signature) */
.passport{position:relative;overflow:hidden;border-radius:var(--r-l);background:#13294B;color:#F2F5FA;padding:24px 22px;isolation:isolate}
@media (prefers-color-scheme:dark){.passport{background:#0B1D3D;border:1px solid var(--line)}}
.passport .guil{position:absolute;inset:0;z-index:-1;opacity:.55;pointer-events:none}
.passport .guil svg{width:100%;height:100%}
.passport h1{color:#fff}
.passport .muted{color:#C3CEE0}
.hero{display:grid;grid-template-columns:1fr;gap:18px;align-items:center}
.hero .who{font-size:1.02rem;color:#C3CEE0}
.hero .days{font:650 clamp(1.6rem,5vw,2.3rem)/1.15 var(--f-disp);color:#fff;margin:4px 0 12px}
.chip{display:inline-flex;align-items:center;gap:8px;border-radius:999px;padding:7px 12px 7px 10px;font-weight:700;font-size:.86rem;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);color:#fff;cursor:pointer}
.chip svg{width:16px;height:16px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.seal{width:min(220px,58vw);aspect-ratio:1;justify-self:center;position:relative}
.seal svg{width:100%;height:100%;display:block}
.seal .pct{position:absolute;inset:0;display:grid;place-content:center;text-align:center;color:#fff}
.seal .pct b{font:700 2.6rem/1 var(--f-disp)}
.seal .pct small{font-size:.8rem;color:#E9D49A;margin-top:4px}
.minis{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:16px}
.minis div{border-top:1px solid rgba(255,255,255,.2);padding-top:8px}
.minis b{display:block;font-size:1.06rem;color:#fff}
.minis span{font-size:.76rem;color:#C3CEE0}
@media (min-width:640px){.hero{grid-template-columns:1fr auto}.seal{width:220px}}

/* plan checklist */
.plan{list-style:none;margin:10px 0 0;padding:0}
.plan li{display:flex;align-items:center;gap:12px;padding:12px 0;border-top:1px solid var(--line)}
.plan li:first-child{border-top:0}
.tick{flex:0 0 auto;width:28px;height:28px;border-radius:50%;border:2px solid var(--line);display:grid;place-items:center;color:transparent}
.tick svg{width:16px;height:16px}
.plan li.on .tick{background:var(--ok);border-color:var(--ok);color:#fff}
.plan .tx{flex:1 1 auto;min-width:0}
.plan .tx b{display:block;font-weight:700}
.plan .tx small{color:var(--muted);font-size:.86rem}
.plan li.on .tx b{color:var(--muted);text-decoration:line-through;text-decoration-thickness:1.5px}

/* buttons */
.btn{appearance:none;display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:14px;padding:13px 20px;font-weight:700;font-size:1rem;cursor:pointer;text-decoration:none;min-height:50px;background:var(--brand);color:var(--on-brand);transition:transform .08s ease,filter .15s}
.btn:hover{filter:brightness(1.07)} .btn:active{transform:scale(.98)}
.btn svg{width:20px;height:20px;flex:0 0 auto}
.btn.ghost{background:var(--surface);color:var(--ink);border:1.5px solid var(--line)}
.btn.ghost:hover{border-color:var(--ink-2)}
.btn.gold{background:var(--gold-hi);color:#1E1606}
.btn.sm{min-height:40px;padding:8px 14px;font-size:.9rem;border-radius:11px}
.btn.full{width:100%}
.btn[disabled]{opacity:.5;pointer-events:none}
.btns{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.btns.col{flex-direction:column}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.pillbtn{appearance:none;display:inline-flex;align-items:center;gap:6px;border:1.5px solid var(--line);background:var(--surface);border-radius:999px;padding:7px 13px;font-weight:700;font-size:.88rem;cursor:pointer;color:var(--ink)}
.pillbtn svg{width:16px;height:16px}
.pillbtn[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.pillbtn.playing{border-color:var(--gold-hi);box-shadow:0 0 0 3px color-mix(in srgb,var(--gold-hi) 30%,transparent)}
.tools{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}

/* module list */
.mods{display:grid;grid-template-columns:1fr;gap:10px}
@media (min-width:640px){.mods{grid-template-columns:1fr 1fr}}
.mod{appearance:none;display:flex;align-items:center;gap:14px;text-align:start;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);padding:14px;cursor:pointer;width:100%;color:inherit}
.mod:hover{border-color:var(--ink-2)}
.mod .mi{flex:0 0 auto;width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand)}
.mod .mi svg{width:26px;height:26px}
.mod.gold .mi{background:var(--gold-soft);color:var(--gold)}
.mod .mt{flex:1 1 auto;min-width:0}
.mod .mt b{display:block;font-weight:700;line-height:1.25}
.mod .mt small{display:block;color:var(--muted);font-size:.88rem;line-height:1.35;margin-top:2px}
.mod .cnt{flex:0 0 auto;font-weight:700;font-size:.82rem;color:var(--gold);background:var(--gold-soft);border-radius:999px;padding:4px 10px}

/* feature: interview room */
.feature{display:grid;grid-template-columns:1fr;overflow:hidden;padding:0}
.feature .art{line-height:0;background:var(--sunk)}
.feature .art svg,.feature .art img{width:100%;height:auto;display:block}
.feature .fx{padding:18px 20px 20px}
.feature .fx p{color:var(--muted);margin:6px 0 0}
@media (min-width:760px){.feature{grid-template-columns:1.15fr 1fr;align-items:center}.feature .art{height:100%}.feature .art svg{height:100%;object-fit:cover}}

/* contact */
.cta{background:var(--gold-soft);border-color:color-mix(in srgb,var(--gold-hi) 45%,var(--line))}
.cta h3{color:var(--ink)}
.cta p{color:var(--ink-2);margin-top:6px}
.foot{color:var(--muted);font-size:.82rem;line-height:1.5;margin:28px 0 0;max-width:70ch}

/* ---------- learn ---------- */
.chap{margin-top:26px}
.chap h3{display:flex;align-items:baseline;gap:10px;margin-bottom:10px}
.chap h3 .n{font:700 .85rem var(--f-body);color:var(--gold);flex:0 0 auto}
.chap h3 .cnt{margin-inline-start:auto;font:700 .82rem var(--f-body);color:var(--muted)}
.tiles{display:grid;grid-template-columns:1fr 1fr;gap:10px}
@media (min-width:700px){.tiles{grid-template-columns:repeat(3,1fr)}}
.tile{appearance:none;display:flex;flex-direction:column;text-align:start;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);padding:0;cursor:pointer;overflow:hidden;color:inherit;position:relative}
.tile:hover{border-color:var(--ink-2)}
.tile .art{line-height:0;aspect-ratio:16/10;overflow:hidden;background:var(--sunk)}
.tile .art svg,.tile .art img{width:100%;height:100%;object-fit:cover;display:block}
.tile .tt{padding:10px 12px 12px}
.tile b{display:block;font-weight:700;line-height:1.25;font-size:.98rem}
.tile small{display:block;color:var(--muted);font-size:.8rem;margin-top:2px}
.tile .stamp{position:absolute;top:8px;inset-inline-end:8px;width:34px;height:34px;border-radius:50%;background:var(--ok);color:#fff;display:grid;place-items:center;box-shadow:0 0 0 3px var(--surface)}
.tile .stamp svg{width:18px;height:18px}

.lessonart{border-radius:var(--r-l);overflow:hidden;line-height:0;background:var(--sunk)}
.lessonart svg,.lessonart img{width:100%;height:auto;display:block}
.reader{font-size:1.28rem;line-height:1.75;margin:16px 0 0;max-width:62ch}
.reader .w{border-radius:5px;transition:background .12s,color .12s}
.reader .w.on{background:var(--gold-soft);color:var(--ink);box-shadow:0 0 0 2px var(--gold-soft)}
.reader mark{background:none;color:inherit;font-weight:700;border-bottom:3px solid var(--gold-hi);cursor:pointer;padding:0 1px}
.reader mark:hover{background:var(--gold-soft)}
.trn{margin-top:14px;padding:14px 16px;border-inline-start:4px solid var(--gold-hi);background:var(--surface);border-radius:var(--r-s);font-size:1.08rem;line-height:1.7}
.hint{font-size:.88rem;color:var(--muted);margin-top:8px}
.cloze{font-size:1.15rem;margin:8px 0 12px}
.cloze .gap{display:inline-block;min-width:80px;border-bottom:2.5px solid var(--ink);margin:0 4px}

/* ---------- forms ---------- */
.l{display:block;font-weight:700;margin:16px 0 6px}
.f{width:100%;border:1.5px solid var(--line);background:var(--surface);border-radius:12px;padding:13px 14px;font-size:1.05rem;color:var(--ink)}
.f:focus{border-color:var(--brand);outline:0;box-shadow:0 0 0 3px var(--brand-soft)}
.fine{font-size:.85rem;color:var(--muted);margin-top:6px}
.typerow{display:flex;gap:8px;align-items:center}
.typerow .f{flex:1 1 auto}

/* ---------- question card ---------- */
.qcard{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:22px 20px;box-shadow:var(--sh)}
.qcard .lbl{font-weight:700;font-size:.85rem;color:var(--gold)}
.qcard .q{font:650 clamp(1.4rem,4.4vw,1.9rem)/1.25 var(--f-disp);margin:8px 0 6px;font-family:"Source Serif 4",Georgia,serif}
.qcard .tr{color:var(--muted);font-size:1.02rem}
.fb{margin-top:14px;border-radius:var(--r-m);padding:14px 16px;border:1.5px solid}
.fb.good{background:var(--ok-soft);border-color:color-mix(in srgb,var(--ok) 40%,transparent)}
.fb.bad{background:var(--bad-soft);border-color:color-mix(in srgb,var(--bad) 35%,transparent)}
.fb .h{display:flex;align-items:center;gap:8px;font-weight:700;font-size:1.08rem}
.fb.good .h{color:var(--ok)} .fb.bad .h{color:var(--bad)}
.fb .h svg{width:22px;height:22px}
.fb .n{display:block;margin-top:6px;color:var(--ink)}
.fb .n em{font-style:normal;font-weight:700}
.intro{background:var(--brand-soft);border-radius:var(--r-m);padding:12px 14px;margin-bottom:14px;color:var(--ink);font-size:.95rem}
.intro b{display:block;margin-bottom:2px}
.score{display:flex;gap:16px;font-weight:700}
.score .ok{color:var(--ok)} .score .bad{color:var(--bad)}
.dots{display:flex;flex-wrap:wrap;gap:5px;margin:10px 0 0}
.dots i{width:12px;height:12px;border-radius:50%;background:var(--line)}
.dots i.ok{background:var(--ok)} .dots i.bad{background:var(--bad)} .dots i.cur{box-shadow:0 0 0 2px var(--gold-hi)}

/* dock (mic) */
.dock{position:sticky;bottom:calc(var(--nav-h) + 8px);z-index:15;margin-top:18px}
@media (min-width:920px){.dock{bottom:16px}}
.dockin{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:14px;box-shadow:0 14px 40px -18px rgba(19,41,75,.5)}
.ctrl{display:grid;grid-template-columns:1fr auto 1fr;align-items:center}
.ctrl .side{display:flex}
.ctrl .side.e{justify-content:flex-end}
.mic{appearance:none;position:relative;width:76px;height:76px;border-radius:50%;border:0;background:var(--brand);color:var(--on-brand);display:grid;place-items:center;cursor:pointer;box-shadow:0 8px 22px -8px var(--brand)}
.mic svg{width:32px;height:32px;position:relative;z-index:1}
.mic .lvl{position:absolute;inset:-8px;border-radius:50%;border:3px solid var(--gold-hi);opacity:0;transform:scale(var(--lv,1));transition:transform .08s linear}
.mic.rec{background:var(--bad)}
.mic.rec .lvl{opacity:.9}
.mic.busy{opacity:.6;pointer-events:none}
.miclbl{text-align:center;color:var(--muted);font-size:.92rem;margin-top:8px}
.sb{appearance:none;width:46px;height:46px;border-radius:14px;border:1.5px solid var(--line);background:var(--surface);display:grid;place-items:center;cursor:pointer;flex:0 0 auto;color:var(--ink)}
.sb svg{width:22px;height:22px}
.sb.prim{background:var(--brand);border-color:var(--brand);color:var(--on-brand)}

/* ---------- flashcards ---------- */
.deck{perspective:1400px;margin-top:6px}
.card3d{position:relative;width:100%;min-height:300px;transform-style:preserve-3d;transition:transform .55s cubic-bezier(.2,.7,.2,1);cursor:pointer;border:0;background:none;padding:0;display:block;text-align:start;color:inherit}
.card3d.flipped{transform:rotateY(180deg)}
.face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;border-radius:var(--r-l);padding:24px 22px;display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);box-shadow:var(--sh)}
.face.back{transform:rotateY(180deg);background:#13294B;color:#F2F5FA;border-color:#13294B;overflow:hidden}
.face .lbl{font-weight:700;font-size:.85rem;color:var(--gold)}
.face.back .lbl{color:#E9D49A}
.face .q{font:650 clamp(1.35rem,4.2vw,1.8rem)/1.25 "Source Serif 4",Georgia,serif;margin:10px 0 8px}
.face .tr{color:var(--muted)}
.face.back .ans{font:650 clamp(1.4rem,4.6vw,2rem)/1.25 "Source Serif 4",Georgia,serif;margin:10px 0}
.face.back .alt{color:#C3CEE0;font-size:.95rem}
.face.back .tipx{margin-top:auto;padding-top:12px;border-top:1px solid rgba(255,255,255,.18);font-size:.95rem;color:#DDE4F0}
.face .flipnote{margin-top:auto;color:var(--muted);font-size:.9rem;display:flex;align-items:center;gap:8px}
.face .flipnote svg{width:18px;height:18px}
.deckbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;color:var(--muted);font-weight:700;font-size:.9rem}

/* ---------- quiz ---------- */
.opts{display:grid;gap:10px;margin-top:14px}
.opt{appearance:none;text-align:start;width:100%;border:1.5px solid var(--line);background:var(--surface);border-radius:14px;padding:14px 16px;font-size:1.06rem;cursor:pointer;display:flex;align-items:center;gap:12px;color:inherit}
.opt:hover{border-color:var(--ink-2)}
.opt .k{flex:0 0 auto;width:30px;height:30px;border-radius:50%;background:var(--sunk);display:grid;place-items:center;font-weight:700;font-size:.9rem}
.opt.right{border-color:var(--ok);background:var(--ok-soft)}
.opt.right .k{background:var(--ok);color:#fff}
.opt.wrong{border-color:var(--bad);background:var(--bad-soft)}
.opt.wrong .k{background:var(--bad);color:#fff}
.opt[disabled]{cursor:default}
@media (prefers-reduced-motion:no-preference){.opt.wrong{animation:shake .32s}}
@keyframes shake{25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}

/* ---------- walkthrough ---------- */
.walk{display:grid;grid-template-columns:minmax(0,1fr);gap:16px}
.walk>*{min-width:0}
.rail{list-style:none;margin:0;padding:0;display:flex;gap:6px;overflow-x:auto;scrollbar-width:none;padding-bottom:4px}
.rail li{flex:0 0 auto}
.rail button{appearance:none;border:1.5px solid var(--line);background:var(--surface);border-radius:999px;padding:6px 12px 6px 6px;display:flex;align-items:center;gap:8px;font-size:.85rem;font-weight:700;cursor:pointer;color:var(--muted);white-space:nowrap}
[dir="rtl"] .rail button{padding:6px 6px 6px 12px}
.rail button .n{width:24px;height:24px;border-radius:50%;background:var(--sunk);display:grid;place-items:center;font-size:.78rem;color:var(--ink)}
.rail button[aria-current="step"]{border-color:var(--ink);color:var(--ink)}
.rail button[aria-current="step"] .n{background:var(--gold-hi);color:#1E1606}
.rail button.seen .n{background:var(--ink);color:var(--paper)}
.scene{border-radius:var(--r-l);overflow:hidden;line-height:0;background:var(--sunk);position:relative}
.scene svg,.scene img{width:100%;height:auto;display:block}
.bubble{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:20px;border-start-start-radius:6px;padding:14px 16px;box-shadow:var(--sh)}
.bubble .who{display:flex;align-items:center;gap:8px;font-weight:700;font-size:.85rem;color:var(--gold);margin-bottom:6px}
.bubble .line{font:600 1.18rem/1.4 "Source Serif 4",Georgia,serif;margin:6px 0 2px}
.bubble .lt{color:var(--muted);font-size:.94rem;margin-bottom:8px}
.bubble .line+.lt{margin-top:0}
.say{display:flex;gap:10px;align-items:flex-start}
.say .play{flex:0 0 auto;margin-top:6px}
.kv{display:grid;gap:12px;margin-top:4px}
.kv .k{font-weight:700;margin-bottom:4px;display:flex;align-items:center;gap:8px}
.kv .k svg{width:20px;height:20px;color:var(--gold)}
.offtip{background:var(--gold-soft);border-radius:var(--r-m);padding:14px 16px}
@media (min-width:860px){.walk{grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);align-items:start}.walk .rail{grid-column:1/-1}}

/* ---------- checker ---------- */
.choices{display:grid;gap:8px;margin-top:10px}
.choice{appearance:none;text-align:start;border:1.5px solid var(--line);background:var(--surface);border-radius:14px;padding:13px 16px;font-size:1rem;cursor:pointer;display:flex;align-items:center;gap:12px;color:inherit;font-weight:600}
.choice .rb{flex:0 0 auto;width:22px;height:22px;border-radius:50%;border:2px solid var(--line)}
.choice[aria-pressed="true"]{border-color:var(--brand);background:var(--brand-soft)}
.choice[aria-pressed="true"] .rb{border:7px solid var(--brand)}
.qgrp+.qgrp{margin-top:22px}
.qgrp h3{font-family:var(--f-body);font-size:1.05rem;font-weight:700}
.verdict{margin-top:20px;border-radius:var(--r-l);padding:20px;background:#13294B;color:#F2F5FA}
.verdict h3{color:#fff;font-size:1.3rem}
.verdict p{margin-top:8px;color:#DDE4F0}
.verdict .fine{color:#AFBCD2}

/* ---------- chat ---------- */
.log{display:flex;flex-direction:column;gap:12px;margin-top:14px}
.msg{display:flex;gap:10px;align-items:flex-end;max-width:94%}
.msg .av{flex:0 0 auto;width:38px;height:38px;border-radius:50%;overflow:hidden;background:var(--ink);display:grid;place-items:center;color:#fff}
.msg .av svg{width:38px;height:38px}
.msg .bub{background:var(--surface);border:1px solid var(--line);border-radius:18px;border-end-start-radius:6px;padding:12px 14px}
.msg .bub .who{display:block;font-weight:700;font-size:.78rem;color:var(--gold)}
.msg.me{align-self:flex-end}
.msg.me .bub{background:var(--brand);color:var(--on-brand);border-color:var(--brand);border-radius:18px;border-end-end-radius:6px}
.msg .help{display:block;color:var(--muted);margin-top:6px;font-size:.92rem}
.fix{align-self:flex-end;max-width:92%;background:var(--gold-soft);border-radius:14px;padding:10px 12px;font-size:.94rem}
.typing{display:inline-flex;gap:4px;padding:4px 0}
.typing i{width:8px;height:8px;border-radius:50%;background:var(--muted);opacity:.4}
@media (prefers-reduced-motion:no-preference){.typing i{animation:bl 1.2s infinite}.typing i:nth-child(2){animation-delay:.2s}.typing i:nth-child(3){animation-delay:.4s}}
@keyframes bl{40%{opacity:1}}

/* ---------- list ---------- */
.qlist{list-style:none;margin:0;padding:0}
.qlist li{display:flex;gap:12px;padding:14px 0;border-top:1px solid var(--line);align-items:flex-start}
.qlist li .tx{flex:1 1 auto;min-width:0}
.qlist li b{display:block;font-weight:700}
.qlist li small{display:block;color:var(--muted);margin-top:2px}
.qlist li .a{color:var(--ink);margin-top:4px;font-size:.95rem}
.qlist .num{flex:0 0 auto;width:34px;color:var(--gold);font-weight:700;font-size:.9rem;padding-top:2px}
.state{display:inline-flex;width:10px;height:10px;border-radius:50%;background:var(--line);margin-inline-start:6px;vertical-align:middle}
.state.ok{background:var(--ok)} .state.mid{background:var(--gold-hi)}
.res{list-style:none;margin:8px 0 0;padding:0}
.res li{display:flex;gap:12px;align-items:center;padding:12px 0;border-top:1px solid var(--line)}
.res li:first-child{border-top:0}
.res .ic{flex:0 0 auto;width:32px;height:32px;border-radius:50%;display:grid;place-items:center;color:#fff}
.res .ic svg{width:18px;height:18px}
.res .ic.ok{background:var(--ok)} .res .ic.bad{background:var(--bad)}
.res .tx b{display:block} .res .tx small{color:var(--muted)}
.big-result{text-align:center;padding:28px 20px}
.big-result .medal{width:120px;height:120px;margin:0 auto 12px}
.big-result p{color:var(--muted);margin-top:8px}

/* toast */
.toast{position:fixed;inset-inline:16px;bottom:calc(var(--nav-h) + 20px);margin:0 auto;max-width:460px;background:var(--ink);color:var(--paper);border-radius:14px;padding:12px 16px;font-weight:600;z-index:60;text-align:center;box-shadow:0 10px 30px -10px rgba(0,0,0,.5)}

/* gate */
.gate{max-width:1120px;margin:0 auto;padding:22px 16px 40px;display:grid;gap:22px}
.gate .passport{padding:28px 22px}
.gate .langs{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 6px}
.gate .langs button{appearance:none;border:1.5px solid rgba(255,255,255,.3);background:transparent;color:#fff;border-radius:999px;padding:9px 16px;font-weight:700;cursor:pointer;font-size:.98rem}
.gate .langs button[aria-pressed="true"]{background:#fff;color:#13294B;border-color:#fff}
.gate .art{border-radius:var(--r-m);overflow:hidden;line-height:0;margin-top:18px}
.gate .art svg,.gate .art img{width:100%;height:auto;display:block}
.gate p.lead{color:#C3CEE0;font-size:1.1rem;margin-top:10px;max-width:52ch}
@media (min-width:880px){.gate{grid-template-columns:1.25fr 1fr;align-items:start;padding-top:40px}.gate .passport{padding:40px 36px}}

@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}