*{margin:0;padding:0;box-sizing:border-box}
:root{--acc:#8b5cf6;--acc2:#22d3ee;--pink:#f472b6;--bg:#05060c;--pan:#0c0e18;--line:rgba(139,92,246,.2);--ink:#e7ecf4;--dim:#9aa4b6}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--ink);font-family:'Titillium Web',system-ui,-apple-system,sans-serif;line-height:1.7;overflow-x:hidden}
a{color:inherit}
img{max-width:100%}
.stars{position:fixed;inset:0;z-index:0;pointer-events:none;background:
  radial-gradient(1px 1px at 12% 20%,#fff,transparent),
  radial-gradient(1px 1px at 78% 42%,#cbd5ff,transparent),
  radial-gradient(1.4px 1.4px at 48% 72%,#fff,transparent),
  radial-gradient(1px 1px at 32% 88%,#bcd,transparent),
  radial-gradient(1px 1px at 66% 12%,#fff,transparent),
  radial-gradient(1px 1px at 90% 78%,#fff,transparent);background-size:340px 340px;opacity:.5}
.wrap{max-width:1080px;margin:0 auto;padding:0 clamp(16px,4vw,28px);position:relative;z-index:2}

/* HEADER */
header{position:sticky;top:0;z-index:50;background:rgba(5,6,12,.9);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.hbar{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:13px clamp(16px,4vw,28px);max-width:1080px;margin:0 auto}
.brand{font-family:'Exo 2',sans-serif;font-weight:700;letter-spacing:.12em;font-size:clamp(15px,3.6vw,19px);text-decoration:none;white-space:nowrap}
.brand b{background:linear-gradient(90deg,var(--acc),var(--acc2));-webkit-background-clip:text;background-clip:text;color:transparent}
.home{font-family:'Exo 2',sans-serif;font-weight:700;font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;text-decoration:none;
  padding:9px 16px;border-radius:100px;background:linear-gradient(90deg,var(--acc),var(--acc2));color:#fff;white-space:nowrap}
/* horizontálně scrollovatelné menu lekcí — ideální na mobil */
.lessons{display:flex;gap:8px;overflow-x:auto;padding:10px clamp(16px,4vw,28px);max-width:1080px;margin:0 auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.lessons::-webkit-scrollbar{display:none}
.lessons a{flex:0 0 auto;font-family:'Exo 2',sans-serif;font-size:12px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;
  text-decoration:none;color:var(--dim);border:1px solid var(--line);border-radius:100px;padding:7px 15px;transition:.2s;white-space:nowrap;background:rgba(139,92,246,.04)}
.lessons a:hover{color:var(--ink);border-color:var(--acc2)}
.lessons a.active{color:#fff;background:linear-gradient(90deg,var(--acc),var(--acc2));border-color:transparent}

/* PAGE HEAD */
main{padding:clamp(30px,7vw,60px) 0 40px;position:relative;z-index:2}
.eyebrow{font-family:'Exo 2',sans-serif;font-size:12px;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:var(--acc2);
  display:flex;align-items:center;gap:10px;margin-bottom:14px}
.eyebrow::before{content:'';width:26px;height:2px;background:var(--acc2);border-radius:2px}
h1{font-family:'Exo 2',sans-serif;font-weight:800;font-size:clamp(28px,7vw,52px);line-height:1.06;letter-spacing:.01em;text-transform:uppercase;
  background:linear-gradient(100deg,var(--pink),var(--acc) 46%,var(--acc2));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:clamp(16px,4.4vw,19px);color:#c3cbdb;max-width:760px;margin:20px 0 6px}
.lead b{color:#fff}

h2{font-family:'Exo 2',sans-serif;font-weight:700;font-size:clamp(21px,5.4vw,32px);line-height:1.18;margin:40px 0 14px}
h2 span{color:var(--acc)}
h3.sub{font-family:'Exo 2',sans-serif;font-size:clamp(17px,4.6vw,21px);font-weight:700;margin:30px 0 14px}

/* LEARN */
.learn{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:26px 0 8px}
.learn div{border:1px solid var(--line);border-radius:14px;padding:18px 20px;background:linear-gradient(180deg,rgba(139,92,246,.06),rgba(34,211,238,.02))}
.learn h4{font-family:'Exo 2',sans-serif;font-size:12.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:#c4b5fd;margin-bottom:8px}
.learn.b div:nth-child(2){background:linear-gradient(180deg,rgba(34,211,238,.07),rgba(34,211,238,.02))}
.learn.b div:nth-child(2) h4{color:#7dd3fc}
.learn ul{list-style:none;font-size:15px;color:var(--dim)}
.learn li{padding:4px 0 4px 20px;position:relative}
.learn li::before{content:'▸';position:absolute;left:0;color:var(--acc2)}
@media(max-width:640px){.learn{grid-template-columns:1fr}}

/* CALLOUT */
.callout{border:1px solid rgba(34,211,238,.3);border-radius:16px;padding:20px 22px;background:rgba(34,211,238,.05);margin:22px 0;font-size:16px}
.callout b{color:#7dd3fc}

/* CARDS */
.grid{display:grid;gap:16px;margin-top:22px}
.g2{grid-template-columns:1fr 1fr}
.g3{grid-template-columns:repeat(3,1fr)}
@media(max-width:860px){.g3{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.g2,.g3{grid-template-columns:1fr}}
.card{border:1px solid var(--line);border-radius:16px;padding:22px;background:var(--pan);position:relative}
.card.star{border-color:rgba(244,114,182,.4)}
.card .rl{font-family:monospace;font-size:11.5px;letter-spacing:.04em;color:#7dd3fc;background:rgba(34,211,238,.08);
  border:1px solid rgba(34,211,238,.2);border-radius:6px;padding:2px 9px;display:inline-block;margin-bottom:12px}
.card .badge{position:absolute;top:16px;right:16px;font-size:10px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;
  color:#fde047;background:rgba(234,179,8,.12);border:1px solid rgba(234,179,8,.3);border-radius:100px;padding:3px 10px}
.card h3{font-family:'Exo 2',sans-serif;font-size:17px;font-weight:700;margin-bottom:6px;padding-right:64px}
.card .who{font-size:15px;color:#c3cbdb;margin-bottom:12px}
.card dl{font-size:14.5px;display:flex;flex-direction:column;gap:9px}
.card dt{font-family:'Exo 2',sans-serif;font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--acc2);margin-bottom:1px}
.card dd{color:var(--dim)}
.card dd b{color:#e7ecf4;font-weight:600}
.warn{color:#fca5a5!important}

/* TABLE → na mobilu se láme na karty */
.tblwrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin-top:8px}
.tbl{width:100%;border-collapse:collapse;font-size:14.5px;border-radius:14px;overflow:hidden;border:1px solid var(--line);min-width:520px}
.tbl th{background:rgba(139,92,246,.1);font-family:'Exo 2',sans-serif;font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  text-align:left;padding:13px 15px;color:#c4b5fd;white-space:nowrap}
.tbl td{padding:12px 15px;border-top:1px solid rgba(139,92,246,.1);color:var(--dim);vertical-align:top}
.tbl td b{color:#e7ecf4}
.tbl a{color:#7dd3fc;text-decoration:none}
.rlt{font-family:monospace;font-size:12.5px;color:#7dd3fc;white-space:nowrap}
.tbl-hint{font-size:12.5px;color:#6b7484;margin-top:8px;display:none}
@media(max-width:640px){.tbl-hint{display:block}}

/* STEPS */
.steps{display:flex;flex-direction:column;gap:14px;counter-reset:s;margin-top:20px}
.step{display:flex;gap:16px;align-items:flex-start;border:1px solid var(--line);border-left-width:4px;border-radius:14px;padding:18px 20px;background:var(--pan)}
.step::before{counter-increment:s;content:counter(s);font-family:'Exo 2',sans-serif;font-size:24px;font-weight:800;color:var(--acc);min-width:34px;line-height:1}
.step h4{font-family:'Exo 2',sans-serif;font-size:16px;font-weight:700;margin-bottom:3px}
.step p{font-size:14.5px;color:var(--dim)}
.step:nth-child(1){border-left-color:var(--pink)}
.step:nth-child(2){border-left-color:var(--acc)}
.step:nth-child(3){border-left-color:#818cf8}
.step:nth-child(4){border-left-color:var(--acc2)}
.step:nth-child(5){border-left-color:#4ade80}

/* RISK / CHECKLIST */
.risk{border:1px solid rgba(239,68,68,.3);border-radius:16px;padding:22px;background:rgba(239,68,68,.05);margin-top:8px}
.risk.warnbox{border-color:rgba(234,179,8,.3);background:rgba(234,179,8,.05)}
.risk h3{font-family:'Exo 2',sans-serif;font-size:17px;font-weight:700;color:#fca5a5;margin-bottom:12px}
.risk.warnbox h3{color:#fde047}
.risk ul{list-style:none;display:flex;flex-direction:column;gap:11px;font-size:15px}
.risk li{padding-left:26px;position:relative;color:#e8d0d0}
.risk.warnbox li{color:#e8e0c0}
.risk li::before{content:'⚠';position:absolute;left:0;color:#ef4444}
.risk.warnbox li::before{color:#eab308}
.risk li b{color:#fff}

/* EMAIL */
.mail{border:1px solid var(--line);border-radius:16px;background:var(--pan);overflow:hidden;margin-bottom:18px}
.mail-h{display:flex;align-items:center;gap:8px;padding:12px 16px;background:rgba(139,92,246,.08);border-bottom:1px solid var(--line);flex-wrap:wrap}
.mail-h .n{font-family:'Exo 2',sans-serif;font-weight:700;font-size:14.5px}
.mail-h .sub{font-size:13px;color:var(--dim)}
.mail-h .to{font-size:12px;color:#7dd3fc;font-family:monospace;word-break:break-all}
.mail-b{padding:20px;font-size:15px;color:#c9d2e0;white-space:pre-line}
.mail-b .sign{color:var(--acc2);font-weight:600;display:block;margin-top:14px}

/* GLOSS */
.gloss{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:8px}
.gloss div{border:1px solid var(--line);border-radius:12px;padding:15px 17px;background:var(--pan);font-size:14.5px;color:var(--dim)}
.gloss b{color:#c4b5fd;font-family:'Exo 2',sans-serif;font-weight:700;display:block;margin-bottom:3px}
@media(max-width:640px){.gloss{grid-template-columns:1fr}}

/* INDEX cards */
.hub{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:30px}
@media(max-width:860px){.hub{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.hub{grid-template-columns:1fr}}
.hcard{display:block;text-decoration:none;border:1px solid var(--line);border-radius:16px;padding:24px 22px;background:var(--pan);transition:.22s}
.hcard:hover{border-color:var(--acc2);transform:translateY(-3px);box-shadow:0 16px 40px -18px rgba(34,211,238,.4)}
.hcard .num{font-family:'Exo 2',sans-serif;font-size:13px;font-weight:800;letter-spacing:.1em;color:var(--acc2)}
.hcard h3{font-family:'Exo 2',sans-serif;font-size:19px;font-weight:700;margin:8px 0 6px;color:#fff}
.hcard p{font-size:14.5px;color:var(--dim)}
.chips{display:flex;gap:9px;flex-wrap:wrap;margin-top:26px}
.chip{font-size:13.5px;color:var(--dim);border:1px solid var(--line);border-radius:100px;padding:8px 16px;background:rgba(139,92,246,.04)}
.chip b{color:#fff;font-weight:700}

/* PREV / NEXT */
.pager{display:flex;gap:12px;margin-top:44px;flex-wrap:wrap}
.pager a{flex:1 1 220px;display:flex;flex-direction:column;gap:3px;text-decoration:none;border:1px solid var(--line);border-radius:14px;
  padding:16px 20px;background:var(--pan);transition:.2s}
.pager a:hover{border-color:var(--acc2);background:rgba(34,211,238,.04)}
.pager .dir{font-family:'Exo 2',sans-serif;font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--dim)}
.pager .ttl{font-family:'Exo 2',sans-serif;font-size:16px;font-weight:700;color:#fff}
.pager a.next{text-align:right}

footer{border-top:1px solid var(--line);padding:34px 0 54px;text-align:center;color:#5a6376;font-size:13px;position:relative;z-index:2;margin-top:30px}
footer b{color:var(--acc)}
.note{font-size:13px;color:#6b7484;margin-top:14px}
.note em{font-style:italic}