:root{
  --bg:#f7f8fb;
  --surface:#ffffff;
  --surface-2:#f1f3f9;
  --text:#14161f;
  --text-soft:#4b5266;
  --text-dim:#767d92;
  --border:#e3e6ef;
  --accent:#3b4de8;
  --accent-soft:#eceefd;
  --accent-2:#08a37a;
  --warn:#c2410c;
  --warn-soft:#fff2e8;
  --bad:#d92d20;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(20,22,31,.05), 0 8px 24px rgba(20,22,31,.06);
  --maxw:1180px;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0e1017;
    --surface:#161a25;
    --surface-2:#1d2231;
    --text:#eef0f6;
    --text-soft:#b7bdcd;
    --text-dim:#8b93a7;
    --border:#272d3d;
    --accent:#7b88ff;
    --accent-soft:#1d2340;
    --accent-2:#2bd39b;
    --warn:#fb923c;
    --warn-soft:#2a1d14;
    --bad:#f87171;
    --shadow:0 1px 2px rgba(0,0,0,.4), 0 8px 28px rgba(0,0,0,.35);
  }
}
:root[data-theme="dark"]{
  --bg:#0e1017; --surface:#161a25; --surface-2:#1d2231; --text:#eef0f6;
  --text-soft:#b7bdcd; --text-dim:#8b93a7; --border:#272d3d; --accent:#7b88ff;
  --accent-soft:#1d2340; --accent-2:#2bd39b; --warn:#fb923c; --warn-soft:#2a1d14; --bad:#f87171;
  --shadow:0 1px 2px rgba(0,0,0,.4), 0 8px 28px rgba(0,0,0,.35);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth; scroll-padding-top:88px}
body{
  margin:0; background:var(--bg); color:var(--text);
  font-family:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;
  font-size:17px; line-height:1.65; -webkit-font-smoothing:antialiased;
}
.wrap{max-width:var(--maxw); margin:0 auto; padding:0 16px}
a{color:var(--accent)}
h1,h2,h3,h4,h5{line-height:1.2; margin:0 0 .5em}
img{max-width:100%}
code{background:var(--surface-2); padding:.12em .4em; border-radius:6px; font-size:.88em}
.small{font-size:.86rem; color:var(--text-dim)}
.skip{position:absolute; left:-9999px}
.skip:focus{left:8px; top:8px; background:var(--surface); padding:10px 14px; border-radius:8px; z-index:99}

.topbar{
  position:sticky; top:0; z-index:50; background:color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter:saturate(1.6) blur(12px); border-bottom:1px solid var(--border);
}
.topbar-inner{
  max-width:var(--maxw); margin:0 auto; padding:10px 16px;
  display:flex; align-items:center; justify-content:space-between; gap:16px;
}
.brand{display:flex; align-items:center; gap:10px; text-decoration:none; color:var(--text); font-weight:700}
.brand-mark{
  width:32px; height:32px; border-radius:9px; display:grid; place-items:center;
  background:linear-gradient(135deg,var(--accent),#8b5cf6); color:#fff; font-size:13px; letter-spacing:.5px;
}
.brand-text{font-size:.98rem; white-space:nowrap}
.topnav{display:flex; align-items:center; gap:4px}
.topnav a{
  color:var(--text-soft); text-decoration:none; font-size:.9rem; font-weight:500;
  padding:7px 10px; border-radius:8px;
}
.topnav a:hover{background:var(--surface-2); color:var(--text)}
.topnav a.btn{color:#fff}
.menu-toggle{display:none; background:none; border:0; padding:8px; cursor:pointer}
.menu-toggle span{display:block; width:22px; height:2px; background:var(--text); margin:4px 0; border-radius:2px; transition:.2s}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.progress{height:2px; background:transparent}
.progress-bar{height:100%; width:0; background:linear-gradient(90deg,var(--accent),#8b5cf6)}
.mobilenav{
  position:sticky; top:53px; z-index:49; background:var(--surface);
  border-bottom:1px solid var(--border); padding:8px 16px 14px;
}
.mobilenav a{display:block; padding:10px 4px; color:var(--text); text-decoration:none; border-bottom:1px solid var(--border); font-weight:500}
.mobilenav a:last-child{border-bottom:0}

.btn{
  display:inline-block; background:var(--accent); color:#fff; text-decoration:none;
  padding:12px 20px; border-radius:10px; font-weight:600; font-size:.95rem; border:0; cursor:pointer;
  transition:transform .12s ease, filter .12s ease;
}
.btn:hover{filter:brightness(1.08); transform:translateY(-1px)}
.btn-sm{padding:8px 14px; font-size:.88rem}
.btn-ghost{background:transparent; color:var(--text); border:1px solid var(--border)}
.btn-ghost:hover{background:var(--surface-2)}

.hero{
  padding:72px 0 56px;
  background:
    radial-gradient(900px 420px at 15% -10%, var(--accent-soft), transparent 70%),
    radial-gradient(700px 380px at 90% 0%, color-mix(in srgb, var(--accent-2) 14%, transparent), transparent 70%);
}
.eyebrow{
  text-transform:uppercase; letter-spacing:.12em; font-size:.74rem; font-weight:700;
  color:var(--accent); margin:0 0 14px;
}
.hero h1{font-size:clamp(2.1rem,5.4vw,3.6rem); font-weight:800; letter-spacing:-.02em; margin-bottom:18px}
.grad{background:linear-gradient(100deg,var(--accent),#8b5cf6 55%,var(--accent-2)); -webkit-background-clip:text; background-clip:text; color:transparent}
.lede{font-size:1.1rem; color:var(--text-soft); max-width:62ch; margin:0 0 28px}
.hero-cta{display:flex; gap:12px; flex-wrap:wrap; margin-bottom:48px}
.hero-cards{display:grid; grid-template-columns:repeat(auto-fit,minmax(215px,1fr)); gap:12px}
.hcard{
  background:var(--surface); border:1px solid var(--border); border-radius:var(--radius);
  padding:18px; text-decoration:none; color:var(--text); display:block; box-shadow:var(--shadow);
  transition:transform .15s ease, border-color .15s ease;
}
.hcard:hover{transform:translateY(-3px); border-color:var(--accent)}
.hcard-num{display:block; font-size:.72rem; font-weight:700; color:var(--accent); letter-spacing:.1em; margin-bottom:8px}
.hcard strong{display:block; margin-bottom:4px}
.hcard span:last-child{font-size:.85rem; color:var(--text-dim)}

.layout{display:grid; grid-template-columns:220px 1fr; gap:48px; align-items:start; padding-top:48px; padding-bottom:64px}
.sidebar{position:sticky; top:96px}
.sidebar-title{text-transform:uppercase; letter-spacing:.12em; font-size:.7rem; font-weight:700; color:var(--text-dim); margin:0 0 10px}
.toc{display:flex; flex-direction:column; gap:2px; border-left:2px solid var(--border)}
.toc a{
  color:var(--text-dim); text-decoration:none; font-size:.9rem; padding:6px 12px;
  border-left:2px solid transparent; margin-left:-2px;
}
.toc a:hover{color:var(--text)}
.toc a.active{color:var(--accent); border-left-color:var(--accent); font-weight:600}
.content{min-width:0}

.section{padding:20px 0 64px; border-bottom:1px solid var(--border); margin-bottom:36px}
.section:last-child{border-bottom:0}
.section-num{
  font-size:.74rem; font-weight:800; letter-spacing:.14em; color:var(--accent);
  margin:0 0 6px;
}
.section h2{font-size:clamp(1.7rem,3.4vw,2.3rem); font-weight:800; letter-spacing:-.015em}
.section h3{font-size:1.25rem; font-weight:700; margin-top:36px}
.section h4{font-size:1.02rem; font-weight:700}
.section h5{font-size:.76rem; text-transform:uppercase; letter-spacing:.1em; color:var(--text-dim); margin-bottom:8px}
.section-lede{font-size:1.05rem; color:var(--text-soft); max-width:70ch}
.section p{max-width:74ch}

.grid-2{display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:14px; margin-top:24px}
.grid-3{display:grid; grid-template-columns:repeat(auto-fit,minmax(230px,1fr)); gap:14px; margin:24px 0}
.card{background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); padding:20px; box-shadow:var(--shadow)}
.card p{margin-bottom:0; font-size:.94rem; color:var(--text-soft)}
.card h4{margin-bottom:8px}
.num-card{position:relative; padding-left:20px}
.ncard-num{
  display:inline-grid; place-items:center; width:26px; height:26px; border-radius:8px;
  background:var(--accent-soft); color:var(--accent); font-weight:800; font-size:.8rem; margin-bottom:10px;
}
.pill{
  display:inline-block; font-size:.68rem; font-weight:700; letter-spacing:.1em; text-transform:uppercase;
  color:var(--accent); background:var(--accent-soft); padding:4px 9px; border-radius:99px; margin-bottom:10px;
}
.tag{display:inline-block; font-size:.78rem; font-weight:600; padding:3px 9px; border-radius:99px; margin:0 2px}
.tag.ok{background:color-mix(in srgb, var(--accent-2) 16%, transparent); color:var(--accent-2)}
.tag.mid{background:var(--surface-2); color:var(--text-soft)}
.tag.bad{background:color-mix(in srgb, var(--bad) 14%, transparent); color:var(--bad)}

.formula{
  background:var(--surface); border:1px solid var(--border); border-left:4px solid var(--accent);
  border-radius:var(--radius-sm); padding:18px 20px; margin:22px 0;
}
.formula.alt{border-left-color:var(--accent-2)}
.formula-label{
  display:block; font-size:.7rem; text-transform:uppercase; letter-spacing:.12em;
  font-weight:800; color:var(--text-dim); margin-bottom:8px;
}
.formula p{margin:0 0 6px; font-size:1.02rem}
.formula-note{font-size:.9rem !important; color:var(--text-soft); margin-top:8px !important}
.callout{border-radius:var(--radius-sm); padding:18px 20px; margin:24px 0; font-size:.95rem}
.callout ol,.callout ul{margin:10px 0 0; padding-left:20px}
.callout li{margin-bottom:6px}
.callout strong:first-child{display:block; margin-bottom:6px}
.callout.tip{background:var(--accent-soft); border:1px solid color-mix(in srgb, var(--accent) 24%, transparent)}
.callout.warn{background:var(--warn-soft); border:1px solid color-mix(in srgb, var(--warn) 32%, transparent)}
.callout.warn strong:first-child{color:var(--warn)}

.sim{margin:24px 0}
.sim-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(215px,1fr)); gap:12px}
.sim-card{background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); padding:16px; box-shadow:var(--shadow)}
.sim-card.is-you{border-color:var(--accent); box-shadow:0 0 0 3px var(--accent-soft), var(--shadow)}
.sim-name{display:block; font-weight:700; font-size:.95rem; margin-bottom:12px}
.sim-card.is-you .sim-name{color:var(--accent)}
.sim-card label{display:block; font-size:.74rem; font-weight:700; color:var(--text-dim); text-transform:uppercase; letter-spacing:.07em; margin-bottom:12px}
.sim-card label:last-child{margin-bottom:0}
.sim-card input[type="number"]{
  display:block; width:100%; margin-top:6px; padding:9px 10px; font-family:inherit; font-size:.98rem;
  border:1px solid var(--border); border-radius:var(--radius-sm); background:var(--bg); color:var(--text);
}
.sim-card input[type="range"]{display:block; width:100%; margin-top:8px; accent-color:var(--accent)}
.sim-card input:focus{outline:2px solid var(--accent); outline-offset:1px}
.sim-q-val{float:right; font-size:1rem; font-weight:800; color:var(--accent); letter-spacing:0}
.sim-extra{display:flex; align-items:flex-end; gap:16px; flex-wrap:wrap; margin:16px 0 4px}
.sim-extra label{font-size:.74rem; font-weight:700; color:var(--text-dim); text-transform:uppercase; letter-spacing:.07em}
.sim-extra input{
  display:block; width:120px; margin-top:6px; padding:8px 10px; font-family:inherit; font-size:.95rem;
  border:1px solid var(--border); border-radius:var(--radius-sm); background:var(--bg); color:var(--text);
}
.row-you{background:var(--accent-soft)}
.row-you td{font-weight:600}
.row-out td{color:var(--text-dim)}
.row-cut td{border-top:2px dashed var(--bad); padding-top:14px}
.row-cut td:first-child::after{content:" hranica reklám"; display:block; font-size:.68rem; text-transform:uppercase; letter-spacing:.06em; color:var(--bad); font-weight:700}
.sim-verdict{
  margin:16px 0 0 !important; padding:14px 16px; border-radius:var(--radius-sm); font-size:.95rem; font-weight:600;
  background:var(--accent-soft); border:1px solid color-mix(in srgb, var(--accent) 24%, transparent);
}

.table-scroll{overflow-x:auto; margin:22px 0; border:1px solid var(--border); border-radius:var(--radius); background:var(--surface)}
table{border-collapse:collapse; width:100%; min-width:560px; font-size:.93rem}
th,td{padding:12px 14px; text-align:left; border-bottom:1px solid var(--border); vertical-align:top}
th{background:var(--surface-2); font-size:.76rem; text-transform:uppercase; letter-spacing:.07em; color:var(--text-soft); font-weight:700}
tbody tr:last-child td{border-bottom:0}
.row-good{background:color-mix(in srgb, var(--accent-2) 8%, transparent)}
.row-bad{background:color-mix(in srgb, var(--bad) 6%, transparent)}

.def-list{list-style:none; padding:0; margin:18px 0}
.def-list li{
  padding:12px 0 12px 20px; border-bottom:1px solid var(--border); position:relative;
  font-size:.95rem; color:var(--text-soft);
}
.def-list li:last-child{border-bottom:0}
.def-list li::before{content:"▸"; position:absolute; left:0; color:var(--accent)}
.def-list strong{color:var(--text)}
.rules{list-style:none; counter-reset:r; padding:0; margin:28px 0 0}
.rules li{
  counter-increment:r; position:relative; padding:18px 0 18px 54px; border-top:1px solid var(--border);
}
.rules li::before{
  content:counter(r,decimal-leading-zero); position:absolute; left:0; top:18px;
  font-weight:800; font-size:.85rem; color:var(--accent); background:var(--accent-soft);
  width:36px; height:28px; display:grid; place-items:center; border-radius:8px;
}
.rules h4{margin-bottom:4px}
.rules p{margin:0; color:var(--text-soft); font-size:.95rem}

.funnel{display:flex; flex-direction:column; gap:16px; margin:28px 0}
.stage{background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow)}
.stage-head{padding:18px 20px 14px; border-bottom:1px solid var(--border)}
.stage-head h3{margin:8px 0 0; font-size:1.15rem}
.stage-tag{
  display:inline-block; font-size:.7rem; font-weight:800; letter-spacing:.12em;
  padding:4px 10px; border-radius:99px; color:#fff;
}
.stage-tofu .stage-tag{background:#8b5cf6}
.stage-mofu .stage-tag{background:var(--accent)}
.stage-bofu .stage-tag{background:var(--accent-2)}
.stage-retention .stage-tag{background:#d97706}
.stage-tofu{border-top:3px solid #8b5cf6}
.stage-mofu{border-top:3px solid var(--accent)}
.stage-bofu{border-top:3px solid var(--accent-2)}
.stage-retention{border-top:3px solid #d97706}
.stage-body{display:grid; grid-template-columns:repeat(auto-fit,minmax(215px,1fr)); gap:24px; padding:18px 20px}
.stage-body ul{margin:0; padding-left:18px; font-size:.92rem; color:var(--text-soft)}
.stage-body li{margin-bottom:5px}
.kpi-no{color:var(--bad) !important; font-weight:500}
.stage-budget{margin:0; padding:12px 20px; background:var(--surface-2); font-size:.88rem; color:var(--text-soft); max-width:none !important}

.checklist-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(265px,1fr)); gap:16px; margin-top:24px}
.checklist-col{background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); padding:18px; box-shadow:var(--shadow)}
.checklist-col h4{margin-bottom:12px; padding-bottom:10px; border-bottom:1px solid var(--border)}
.check{display:flex; gap:10px; align-items:flex-start; padding:7px 0; font-size:.92rem; color:var(--text-soft); cursor:pointer}
.check input{margin-top:4px; width:17px; height:17px; accent-color:var(--accent); flex:none; cursor:pointer}
.check input:checked + span{color:var(--text-dim); text-decoration:line-through}
.checklist-actions{display:flex; align-items:center; gap:16px; margin-top:18px}
.check-progress{margin:0 !important; font-weight:600; font-size:.92rem}

.calc{display:grid; grid-template-columns:1fr 1fr; gap:16px; margin:26px 0 12px}
.calc-inputs,.calc-results{background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); padding:20px; box-shadow:var(--shadow)}
.calc-inputs label{display:block; font-size:.86rem; font-weight:600; color:var(--text-soft); margin-bottom:14px}
.calc-inputs input{
  display:block; width:100%; margin-top:6px; padding:11px 12px; font-size:1rem; font-family:inherit;
  border:1px solid var(--border); border-radius:var(--radius-sm); background:var(--bg); color:var(--text);
}
.calc-inputs input:focus{outline:2px solid var(--accent); outline-offset:1px}
.res{display:flex; justify-content:space-between; align-items:baseline; gap:12px; padding:9px 0; border-bottom:1px dashed var(--border)}
.res:last-of-type{border-bottom:0}
.res-label{font-size:.88rem; color:var(--text-soft)}
.res-val{font-weight:800; font-size:1.05rem; white-space:nowrap}
.calc-results hr{border:0; border-top:1px solid var(--border); margin:14px 0}
.calc-verdict{margin:14px 0 0 !important; padding:12px 14px; border-radius:var(--radius-sm); font-size:.92rem; font-weight:600}
.calc-verdict.good{background:color-mix(in srgb, var(--accent-2) 14%, transparent); color:var(--accent-2)}
.calc-verdict.bad{background:color-mix(in srgb, var(--bad) 12%, transparent); color:var(--bad)}

.grid-3.teaser{grid-template-columns:repeat(auto-fit,minmax(268px,1fr))}
.teaser-card{border-top:3px solid var(--accent)}
.teaser-card ul{margin:10px 0 0; padding-left:18px; font-size:.91rem; color:var(--text-soft)}
.teaser-card li{margin-bottom:6px}

.flow-scroll{overflow-x:auto; margin:20px 0; padding-bottom:4px}
.flow{display:flex; align-items:stretch; gap:6px; min-width:760px}
.flow-step{
  flex:1 1 0; background:var(--surface); border:1px solid var(--border); border-top:3px solid var(--accent);
  border-radius:var(--radius); padding:16px 14px; box-shadow:var(--shadow);
}
.flow-ico{
  display:grid; place-items:center; width:38px; height:38px; border-radius:11px;
  background:var(--accent-soft); font-size:1.15rem; margin-bottom:10px;
}
.flow-num{display:block; font-size:.66rem; font-weight:800; letter-spacing:.12em; text-transform:uppercase; color:var(--accent); margin-bottom:4px}
.flow-step strong{display:block; font-size:.97rem; margin-bottom:6px; line-height:1.3}
.flow-desc{display:block; font-size:.85rem; color:var(--text-soft); line-height:1.5}
.flow-arrow{display:flex; align-items:center; color:var(--accent); font-size:1.4rem; font-weight:800; flex:0 0 auto}

@media (max-width:760px){
  .flow-scroll{overflow-x:visible}
  .flow{flex-direction:column; min-width:0; gap:0}
  .flow-arrow{justify-content:center; padding:6px 0; transform:rotate(90deg)}
}

.glossary{display:grid; grid-template-columns:repeat(auto-fit,minmax(255px,1fr)); gap:2px; margin-top:24px; background:var(--border); border:1px solid var(--border); border-radius:var(--radius); overflow:hidden}
.glossary > div{background:var(--surface); padding:14px 16px}
.glossary dt{font-weight:700; font-size:.95rem; margin-bottom:2px}
.glossary dd{margin:0; font-size:.88rem; color:var(--text-soft)}

.section-contact{border-bottom:0}
.share{
  display:flex; align-items:center; gap:28px; margin-bottom:20px; padding:24px;
  background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); box-shadow:var(--shadow);
}
.share-qr{flex:0 0 auto; width:186px; padding:10px; background:#fff; border-radius:12px; border:1px solid var(--border)}
.qr-svg{display:block; width:100%; height:auto}
.share-text{min-width:0}
.share-text h3{margin:0 0 8px; font-size:1.25rem}
.share-text p{margin:0 0 12px; font-size:.95rem; color:var(--text-soft); max-width:46ch}
.share-url{font-weight:700}
.share-url a{text-decoration:none; word-break:break-all}
@media (max-width:640px){
  .share{flex-direction:column; text-align:center; gap:20px; padding:20px}
  .share-qr{width:200px}
  .share-text p{margin-left:auto; margin-right:auto}
}
.contact-box{
  background:linear-gradient(135deg,var(--accent),#7c3aed); color:#fff;
  border-radius:24px; padding:44px 36px;
}
.contact-box .eyebrow{color:rgba(255,255,255,.8)}
.contact-box h2{color:#fff; max-width:22ch}
.contact-box p{color:rgba(255,255,255,.9); max-width:56ch}
.contact-links{display:flex; gap:12px; flex-wrap:wrap; margin-top:26px}
.contact-item{
  display:flex; align-items:center; gap:14px; background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.24); border-radius:var(--radius); padding:14px 20px;
  color:#fff; text-decoration:none; transition:background .15s ease;
}
.contact-item:hover{background:rgba(255,255,255,.24)}
.ci-icon{font-size:1.25rem}
.ci-label{display:block; font-size:.74rem; text-transform:uppercase; letter-spacing:.1em; opacity:.8}
.contact-item strong{font-size:1.02rem}

.footer{border-top:1px solid var(--border); background:var(--surface); padding:36px 0}
.footer-inner p{margin:0 0 8px; font-size:.9rem; color:var(--text-soft)}
.footer-contact a{color:var(--accent); text-decoration:none}

@media (max-width:960px){
  .layout{grid-template-columns:1fr; gap:0}
  .sidebar{display:none}
  .calc{grid-template-columns:1fr}
}
@media (max-width:760px){
  body{font-size:16px}
  .topnav{display:none}
  .menu-toggle{display:block}
  .hero{padding:48px 0 40px}
  .hero-cta .btn{flex:1 1 100%; text-align:center}
  .contact-box{padding:32px 22px; border-radius:18px}
  .contact-item{flex:1 1 100%}
  .rules li{padding-left:44px}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *{transition:none !important}
}