:root{
  --bg:#081722;--bg2:#0c2131;--card:#102a3c;--card2:#143349;--line:rgba(255,214,150,.14);
  --text:#eef3f6;--muted:#a3b6c4;--amber:#ffc96b;--amber2:#f0a24a;--brown:#3a2418;--ok:#5fe0a8;
  --r:18px;--max:1080px;
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;background:#081722}
html.leaving body{visibility:hidden}
body{margin:0;font:17px/1.6 var(--font);color:var(--text);background:radial-gradient(1200px 600px at 80% -10%,#123a54 0,transparent 60%),var(--bg);min-height:100vh}
a{color:var(--amber)}
a:hover{color:#ffe0a6}
img{max-width:100%;height:auto}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;background:var(--amber);color:#000;padding:8px 12px;border-radius:8px;z-index:9}

/* Header */
header.site{position:sticky;top:0;z-index:20;background:rgba(8,23,34,.86);backdrop-filter:saturate(1.4) blur(12px);-webkit-backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;gap:16px;height:62px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);font-weight:700;font-size:18px;white-space:nowrap}
.brand img{width:34px;height:34px;border-radius:9px}
nav.main{display:flex;gap:4px;margin-left:auto;overflow-x:auto;scrollbar-width:none}
nav.main::-webkit-scrollbar{display:none}
nav.main a{color:var(--muted);text-decoration:none;padding:8px 11px;border-radius:10px;font-size:15px;white-space:nowrap}
nav.main a:hover,nav.main a[aria-current]{color:var(--text);background:var(--card)}
.langs{display:flex;gap:2px;font-size:13px}
.langs a{color:var(--muted);text-decoration:none;padding:5px 7px;border-radius:7px;font-weight:600}
.langs a[aria-current]{color:#1b1206;background:var(--amber)}
@media (max-width:820px){header.site .wrap{flex-wrap:wrap;height:auto;padding-top:10px;padding-bottom:6px;gap:6px 12px}nav.main{order:3;width:100%;margin-left:0}.langs{margin-left:auto}}

/* Hero */
.hero{padding:44px 0 18px}
.eyebrow{display:inline-flex;gap:8px;align-items:center;color:var(--amber);font:600 13px/1 var(--font);letter-spacing:.08em;text-transform:uppercase}
.eyebrow{flex-wrap:wrap}.eyebrow .dots{font-family:var(--mono);letter-spacing:0;white-space:nowrap}
h1{font-size:clamp(30px,5vw,50px);line-height:1.1;margin:14px 0 12px;letter-spacing:-.02em}
h2{font-size:clamp(24px,3.2vw,32px);line-height:1.2;margin:56px 0 14px;letter-spacing:-.01em}
h3{font-size:20px;margin:26px 0 8px}
.lead{font-size:19px;color:var(--muted);max-width:760px;margin:0}
p,li{color:#d6e1e8}
.muted{color:var(--muted)}

/* Cards */
.card{background:linear-gradient(180deg,var(--card),var(--bg2));border:1px solid var(--line);border-radius:var(--r);padding:22px}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.feature h3{margin-top:6px}
.feature .ico{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:rgba(255,201,107,.14);font-size:22px}

/* Translator */
#translator{margin-top:22px;padding:18px}
.tr-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media (max-width:760px){.tr-grid{grid-template-columns:1fr}}
.tr-grid label{display:block;font-weight:600;font-size:14px;color:var(--muted);margin:0 0 6px 2px}
textarea{width:100%;min-height:150px;resize:vertical;background:#071521;color:var(--text);border:1px solid var(--line);border-radius:14px;padding:14px;font:18px/1.5 var(--font)}
textarea:focus{outline:2px solid var(--amber);outline-offset:1px}
#t-morse{font-family:var(--mono);font-size:19px;letter-spacing:.06em}
.keypad{display:flex;gap:6px;margin-top:8px;flex-wrap:wrap}
.keypad button{flex:1;min-width:52px;justify-content:center}
.keypad button[data-key="."],.keypad button[data-key="-"]{font-size:26px;font-weight:900}
.controls{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;align-items:center}
.btn{appearance:none;border:1px solid var(--line);background:var(--card2);color:var(--text);font:600 15px/1 var(--font);padding:12px 14px;border-radius:12px;cursor:pointer;display:inline-flex;align-items:center;gap:7px;text-decoration:none;min-height:44px}
.btn:hover{border-color:rgba(255,201,107,.45)}
.btn.primary{background:linear-gradient(180deg,#ffd68a,var(--amber2));color:#241504;border-color:transparent}
.btn[data-playing]{outline:2px solid var(--amber);animation:pulse 1s infinite}
@keyframes pulse{50%{box-shadow:0 0 0 6px rgba(255,201,107,.18)}}
.sliders{display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:12px;color:var(--muted);font-size:14px}
.sliders label{display:flex;align-items:center;gap:8px}
input[type=range]{accent-color:var(--amber);width:130px}
#flash{position:fixed;inset:0;z-index:50;background:#000;display:none;cursor:pointer}
#flash.show{display:block}
#flash.on{background:#fff6dc}
#flash span{position:absolute;bottom:24px;left:0;right:0;text-align:center;color:#777;font-size:14px}
#toast{position:fixed;left:50%;bottom:26px;transform:translate(-50%,30px);opacity:0;background:var(--amber);color:#1b1206;font-weight:600;padding:10px 16px;border-radius:12px;transition:.25s;z-index:60;pointer-events:none}
#toast.show{opacity:1;transform:translate(-50%,0)}
#secret{margin-bottom:6px;border:1px solid var(--amber);background:rgba(255,201,107,.08);border-radius:var(--r);padding:18px;margin-top:22px}
#secret .code{font:22px/1.5 var(--mono);word-break:break-word;color:var(--amber)}
#secret [data-secret-answer]{font-size:22px;font-weight:700}
#secret:not(.revealed) .answer{display:none}

/* App CTA */
.cta{display:grid;grid-template-columns:auto 1fr auto;gap:18px;align-items:center;margin:40px 0;padding:22px;border-radius:22px;background:linear-gradient(120deg,#16384f,#0f2638 60%,#2b1d12);border:1px solid rgba(255,201,107,.3)}
.cta img{width:76px;height:76px;border-radius:18px;box-shadow:0 8px 30px rgba(0,0,0,.4)}
.cta h2,.cta h3{margin:0 0 4px}
.cta p{margin:0;color:var(--muted)}
@media (max-width:640px){.cta{grid-template-columns:auto 1fr}.cta .appstore{grid-column:1/-1}}
.appstore{display:inline-flex;align-items:center;gap:10px;background:#000;color:#fff;text-decoration:none;border-radius:12px;padding:9px 16px 9px 13px;border:1px solid #555;min-height:52px}
.appstore:hover{color:#fff;border-color:#999}
.appstore svg{width:26px;height:26px;fill:#fff}
.appstore small{display:block;font-size:11px;line-height:1.1;opacity:.85}
.appstore b{display:block;font-size:19px;line-height:1.1;font-weight:600}

/* Tables */
.chart{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.sym{display:flex;align-items:center;justify-content:space-between;gap:8px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:12px 14px;cursor:pointer;color:var(--text);font:inherit;text-align:left;width:100%}
.sym:hover{border-color:rgba(255,201,107,.5)}
.sym[data-playing]{border-color:var(--amber);background:var(--card2)}
.sym b{font-size:24px;min-width:28px}
.sym code{font:20px/1 var(--mono);color:var(--amber);letter-spacing:.08em}
table{border-collapse:collapse;width:100%;margin:12px 0;font-size:16px}
th,td{border-bottom:1px solid var(--line);padding:10px 8px;text-align:left;vertical-align:top}
th{color:var(--muted);font-weight:600}
td code{font-family:var(--mono);color:var(--amber);font-size:17px;letter-spacing:.06em}
.tablewrap{overflow-x:auto}

/* Content */
.content{max-width:780px}
.content ol li,.content ul li{margin:6px 0}
.steps{counter-reset:s;list-style:none;padding:0}
.steps li{counter-increment:s;position:relative;padding:4px 0 10px 52px}
.steps li::before{content:counter(s);position:absolute;left:0;top:2px;width:36px;height:36px;border-radius:50%;background:var(--amber);color:#1b1206;font-weight:800;display:grid;place-items:center}
.note{border-left:3px solid var(--amber);background:rgba(255,201,107,.07);padding:12px 16px;border-radius:0 12px 12px 0;margin:18px 0}
.big-morse{font:clamp(28px,6vw,56px)/1.2 var(--mono);color:var(--amber);letter-spacing:.12em;word-break:break-word}
details{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:4px 18px;margin:10px 0}
details summary{cursor:pointer;font-weight:650;padding:12px 0;list-style:none;position:relative;padding-right:28px}
details summary::-webkit-details-marker{display:none}
details summary::after{content:"+";position:absolute;right:0;top:9px;font-size:22px;color:var(--amber)}
details[open] summary::after{content:"–"}
details p{margin:0 0 14px}
.crumbs{font-size:14px;color:var(--muted);margin-top:22px}
.crumbs a{color:var(--muted)}
.pill{display:inline-block;font-size:12px;font-weight:700;background:rgba(255,201,107,.16);color:var(--amber);border-radius:999px;padding:3px 9px;vertical-align:middle}
.related{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin-top:12px}
.related a{display:block;text-decoration:none;color:var(--text);background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px}
.related a:hover{border-color:rgba(255,201,107,.5)}
.related a span{display:block;color:var(--muted);font-size:14px}

/* Lang hint */
#langhint{position:fixed;left:12px;right:12px;bottom:12px;max-width:460px;margin:0 auto;background:var(--card2);border:1px solid var(--line);border-radius:14px;padding:10px 12px;display:flex;align-items:center;gap:10px;z-index:30;box-shadow:0 10px 30px rgba(0,0,0,.4)}
#langhint[hidden]{display:none}
#langhint a{flex:1}
#langhint button{background:none;border:0;color:var(--muted);font-size:22px;cursor:pointer;line-height:1}

footer.site{margin-top:70px;border-top:1px solid var(--line);padding:30px 0 50px;color:var(--muted);font-size:14px}
footer.site .cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:18px}
footer.site a{color:var(--muted);text-decoration:none;display:block;padding:3px 0}
footer.site a:hover{color:var(--text)}
footer.site h4{color:var(--text);margin:0 0 6px;font-size:14px}

@media print{
  header.site,footer.site,.cta,#langhint,.noprint,nav{display:none!important}
  body{background:#fff;color:#000}
  .sym{border:1px solid #999;background:#fff;color:#000}.sym code{color:#000}
  .chart{grid-template-columns:repeat(4,1fr)}
  h1,h2,p,li{color:#000}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

@media (max-width:640px){.eyebrow .dots{display:none}.hero{padding:20px 0 4px}.lead{font-size:16px;line-height:1.5}h1{margin:10px 0 8px}textarea{min-height:96px;font-size:17px}#translator{margin-top:16px;padding:14px}h2{margin-top:44px}.btn{padding:11px 12px;font-size:14px}}

/* Name tool */
#nametool{margin-top:22px}
#n-input{width:100%;font:600 24px/1.3 var(--font);background:#071521;color:var(--text);border:1px solid var(--line);border-radius:14px;padding:14px 16px}
#n-input:focus{outline:2px solid var(--amber);outline-offset:1px}
#n-out{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0 6px;min-height:96px}
.ncard{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;min-width:64px;padding:12px 10px;background:#071521;border:1px solid var(--line);border-radius:14px}
.ncard b{font-size:30px;line-height:1}
.ncard span{font:22px/1 var(--mono);color:var(--amber);letter-spacing:.06em;white-space:nowrap}
.ncard.gap{min-width:18px;background:none;border:0}
#n-line{font:18px/1.5 var(--mono);color:var(--muted);word-break:break-word;margin:6px 0 0}
/* Phrase list */
.phrases{display:grid;gap:10px;margin-top:12px}
.phrase{display:grid;grid-template-columns:minmax(150px,1fr) 2fr auto;gap:12px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:12px 14px}
.phrase b{font-size:17px}
.phrase code{font:18px/1.4 var(--mono);color:var(--amber);letter-spacing:.05em;word-break:break-word}
@media (max-width:640px){.phrase{grid-template-columns:1fr auto}.phrase code{grid-column:1/-1;grid-row:2}}

/* Morse drawn like in the app: round dot and rounded dash, centred on one line */
.m{display:inline-flex;align-items:center;flex-wrap:wrap;column-gap:.6em;row-gap:.35em;vertical-align:middle;line-height:1}
.ml{display:inline-flex;align-items:center;gap:.2em;white-space:nowrap}
.m i{display:inline-block;flex:none}
.md{width:.42em;height:.42em;border-radius:50%;background:currentColor}
.mh{width:1.2em;height:.42em;border-radius:.21em;background:currentColor}
.mw{font-style:normal;opacity:.55}
.sym code .m{font-size:15px}
.big-morse{letter-spacing:0}

/* Tools: shared */
.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}
.btn.ghost{background:transparent}
.d-note{font-size:14px;color:var(--muted);margin:14px 0 0}
.btn:focus-visible,label.btn:focus-within{outline:2px solid var(--amber);outline-offset:2px}

/* Audio decoder */
#decoder,#trainer{margin-top:22px;padding:18px}
.d-actions{display:flex;flex-wrap:wrap;gap:8px}
.d-actions .btn{flex:1 1 180px;justify-content:center}
#decoder[data-running=mic] [data-act=d-mic],#decoder[data-running=demo] [data-act=d-demo]{background:#5a2a20;color:#fff;border-color:#a8503a}
.d-status{margin:14px 0 10px;font-weight:600;color:var(--muted);min-height:1.6em}
.d-status.live{color:var(--ok)}.d-status.live::before{content:"";display:inline-block;width:9px;height:9px;border-radius:50%;background:var(--ok);margin-right:8px;animation:pulse 1.2s infinite}
.d-status.err{color:#ff9b85}
.d-signal{display:grid;grid-template-columns:110px 1fr auto;gap:12px;align-items:center;background:#071521;border:1px solid var(--line);border-radius:14px;padding:10px 12px;margin-bottom:14px}
.d-meter{height:10px;border-radius:6px;background:rgba(255,255,255,.07);overflow:hidden}
.d-meter i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--ok),var(--amber));transition:width .08s linear}
#d-tape{width:100%;height:40px;display:block}
#d-stats{font:600 14px/1.2 var(--font);color:var(--muted);white-space:nowrap}#d-stats b{color:var(--text)}
.d-label{display:block;font-weight:600;font-size:14px;color:var(--muted);margin:0 0 6px 2px}
#d-text{min-height:120px;font-size:20px;letter-spacing:.02em}
.d-morse{min-height:28px;margin-top:10px;color:var(--amber);font-size:17px;overflow-wrap:anywhere}
@media (max-width:640px){.d-signal{grid-template-columns:70px 1fr;}.d-signal #d-stats{grid-column:1/-1}#decoder,#trainer{padding:14px}}

/* Trainer */
.k-top{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between}
.k-top b{font-size:16px}
.k-speed{color:var(--muted);font-size:14px;font-weight:600;display:flex;gap:8px;align-items:center}
.k-speed select{background:var(--card2);color:var(--text);border:1px solid var(--line);border-radius:10px;padding:9px 10px;font:600 15px var(--font);min-height:40px}
.k-intro{margin-top:14px;border:1px dashed rgba(255,201,107,.45);border-radius:14px;padding:14px;display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.k-intro-title{margin:0;font-weight:700;width:100%}
.k-intro-list{display:flex;flex-wrap:wrap;gap:10px;flex:1}
.kintro{display:inline-flex;align-items:center;gap:12px;background:#071521;border-radius:12px;padding:10px 14px;font-size:20px}
.kintro b{font-size:28px}
.k-main{text-align:center;padding:22px 0 10px}
.btn.k-play{font-size:18px;padding:16px 26px;min-width:220px;justify-content:center}
.k-feedback{min-height:2em;margin:16px 0 0;font-size:18px;font-weight:600;color:var(--muted)}
.k-feedback.ok{color:var(--ok)}.k-feedback.no{color:#ff9b85}
.k-feedback .m{margin:0 4px;vertical-align:-1px}
.k-keys{display:grid;grid-template-columns:repeat(auto-fill,minmax(64px,1fr));gap:8px;margin-top:10px}
.kkey{justify-content:center;font-size:22px;min-height:58px}
.kkey.ok{background:rgba(95,224,168,.2);border-color:var(--ok)}.kkey.no{background:rgba(255,120,95,.2);border-color:#ff8a70}
#trainer[data-state=idle] .k-keys,#trainer[data-state=done] .k-keys{opacity:.55}
.k-progress-row{display:flex;gap:12px;align-items:center;margin-top:16px}
.k-progress{flex:1;height:8px;border-radius:5px;background:rgba(255,255,255,.07);overflow:hidden}
.k-progress i{display:block;height:100%;width:0;background:var(--amber);transition:width .2s}
#k-count{font-size:14px;color:var(--muted);font-weight:600}
.k-summary{margin-top:16px;background:rgba(255,201,107,.08);border:1px solid rgba(255,201,107,.3);border-radius:14px;padding:14px 16px;text-align:center}
.k-score{font-size:40px;font-weight:800;margin:0;color:var(--amber)}
.k-app{font-size:15px;color:var(--muted)}
.k-learned-title{font-weight:600;color:var(--muted);font-size:14px;margin:20px 0 8px}
.k-learned{display:flex;flex-wrap:wrap;gap:6px}
.kchip{display:inline-flex;gap:8px;align-items:center;border:1px solid var(--line);border-radius:10px;padding:5px 9px;font-size:13px;background:#071521}
.kchip b{font-size:16px}.kchip.good{border-color:rgba(95,224,168,.6)}.kchip.weak{border-color:rgba(255,138,112,.7)}