:root{
  --bg:#0c0f17; --bg2:#141925; --card:#1b2230; --line:#2a3447;
  --txt:#eef2f8; --muted:#9aa7bd; --crimson:#c43c3a; --crimson-d:#9c2c2a;
  --gold:#e7b24a; --gold-d:#c9952f; --good:#67c98e; --bad:#e07b76; --r:14px;
}
*{box-sizing:border-box}
html,body{width:100%;overflow-x:hidden;margin:0;padding:0}
body{background:var(--bg);color:var(--txt);font-family:'Sora',system-ui,Arial,sans-serif;line-height:1.74;font-size:17px}
a{color:var(--gold)}
img{max-width:100%;height:auto}
.skip{position:absolute;left:-999px}
.skip:focus{left:8px;top:8px;background:#fff;color:#000;padding:8px;z-index:99}
.progress{position:fixed;top:0;left:0;height:3px;width:0;background:linear-gradient(90deg,var(--crimson),var(--gold));z-index:60}
main{max-width:920px;margin:0 auto;padding:22px 16px 56px}
h1{font-size:2.0em;line-height:1.2;font-weight:800;margin:.3em 0 .25em;letter-spacing:-.4px}
h2{font-size:1.4em;font-weight:700;margin:1.8em 0 .5em;padding-left:14px;border-left:4px solid var(--crimson)}
h3{font-size:1.08em;font-weight:700;margin:1.1em 0 .4em}
p{margin:.7em 0}
ul,ol{margin:.6em 0}
.updated{color:var(--muted);font-size:.82em;margin:.2em 0 .6em}
.snippet{background:var(--bg2);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px;font-size:1.04em}
/* header */
.topbar{position:sticky;top:0;z-index:50;background:rgba(12,15,23,.93);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.bar-inner{max-width:1120px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:11px 16px;gap:12px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--txt);font-weight:800}
.logo-badge{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--crimson),var(--gold));color:#10131c;font-weight:800;font-size:.92em}
.logo-name{font-size:1.02em}
.nav-main{display:flex;align-items:center;gap:20px;margin-left:auto}
.nav-main a{color:var(--muted);text-decoration:none;font-size:.94em;font-weight:600}
.nav-main a:hover,.nav-main a.active{color:var(--txt)}
.btn{display:inline-block;border-radius:10px;font-weight:700;text-decoration:none;cursor:pointer;text-align:center}
.btn-primary{background:linear-gradient(135deg,var(--crimson),var(--crimson-d));color:#fff;padding:11px 20px}
.btn-primary:hover{filter:brightness(1.1)}
.nav-cta{padding:9px 15px;font-size:.9em;color:#fff}
.btn-xl{font-size:1.12em;padding:15px 32px;background:linear-gradient(135deg,var(--gold),var(--gold-d));color:#20160a}
.cta-row{text-align:center;margin:28px 0}
.burger{display:none;background:none;border:0;flex-direction:column;gap:5px;cursor:pointer;padding:8px;margin-left:auto}
.burger span{display:block;width:26px;height:3px;background:var(--txt);border-radius:2px;transition:.2s}
.burger[aria-expanded=true] span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.burger[aria-expanded=true] span:nth-child(2){opacity:0}
.burger[aria-expanded=true] span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
/* trail */
.trail{font-size:.82em;color:var(--muted);margin:4px 0 12px}
.trail a{color:var(--muted);text-decoration:none}
.trail a:hover{color:var(--txt)}
.trail i{opacity:.5;font-style:normal}
.trail.home{display:none}
/* scorecard */
.scorecard{background:var(--bg2);border:1px solid var(--line);border-radius:18px;padding:22px;margin:26px 0}
.score-head{display:flex;align-items:center;gap:16px;margin-bottom:8px}
.score-num{font-size:2.6em;font-weight:800;color:var(--gold);line-height:1}
.score-cap{font-size:.95em}
.meters{margin:14px 0 6px}
.meter{display:flex;align-items:center;gap:12px;margin:9px 0}
.meter span{flex:0 0 140px;font-size:.9em;color:var(--muted)}
.meter b{flex:1;height:9px;background:var(--card);border-radius:6px;overflow:hidden;display:block}
.meter i{display:block;height:100%;background:linear-gradient(90deg,var(--crimson),var(--gold))}
.meter em{flex:0 0 34px;text-align:right;font-weight:800;font-style:normal;color:var(--gold)}
.proscons{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:18px}
.pc{background:var(--card);border:1px solid var(--line);border-radius:13px;padding:15px}
.good h3{color:var(--good);margin-top:0}
.bad h3{color:var(--bad);margin-top:0}
.pc ul{margin:0;padding-left:18px}
.pc li{margin:.35em 0}
/* tabs */
.tabs{margin:18px 0;border:1px solid var(--line);border-radius:13px;overflow:hidden}
.tab-bar{display:flex;background:var(--card);border-bottom:1px solid var(--line)}
.tab-btn{flex:1;background:none;border:0;color:var(--muted);padding:12px;font-weight:700;cursor:pointer;font-family:inherit;font-size:.92em;min-height:44px}
.tab-btn.on{color:var(--txt);box-shadow:inset 0 -3px 0 var(--crimson)}
.tab-pane{display:none;padding:6px 16px}
.tab-pane.on{display:block}
.tab-note{color:var(--muted)}
/* calc */
.calc{background:var(--bg2);border:1px solid var(--line);border-radius:14px;padding:18px;margin:20px 0}
.calc h3{margin-top:0}
.calc-row{display:flex;align-items:center;gap:12px;margin:10px 0;flex-wrap:wrap}
.calc-row label{flex:0 0 160px;font-size:.92em;color:var(--muted)}
.calc-row input[type=number]{background:var(--card);border:1px solid var(--line);color:var(--txt);border-radius:8px;padding:9px 10px;width:120px;font-family:inherit}
.calc-row input[type=range]{flex:1;min-width:120px;accent-color:var(--crimson)}
.calc-row output{font-weight:700;color:var(--gold)}
.calc-out{margin-top:12px;font-size:1.05em}
.calc-out strong{color:var(--gold)}
.calc-hint{font-size:.8em;margin-bottom:0}
/* tables */
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:18px 0;border:1px solid var(--line);border-radius:13px}
table{border-collapse:collapse;width:100%;min-width:440px}
th,td{padding:12px 15px;text-align:left;border-bottom:1px solid var(--line)}
th{background:var(--card);font-weight:700}
tbody tr:last-child td{border-bottom:0}
/* flow steps */
.flow{counter-reset:s;list-style:none;padding:0;margin:16px 0}
.flow li{position:relative;padding:11px 14px 11px 50px;background:var(--bg2);border:1px solid var(--line);border-radius:12px;margin:9px 0}
.flow li::before{counter-increment:s;content:counter(s);position:absolute;left:11px;top:50%;transform:translateY(-50%);width:28px;height:28px;border-radius:8px;background:var(--crimson);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.85em}
/* figure */
.shot{margin:22px 0;text-align:center}
.shot img{width:90%;border-radius:14px;box-shadow:0 10px 34px rgba(0,0,0,.5)}
.shot figcaption{color:var(--muted);font-size:.85em;margin-top:8px}
/* faq */
.faq{margin:32px 0}
.acc{background:var(--bg2);border:1px solid var(--line);border-radius:12px;margin:10px 0;overflow:hidden}
.acc summary{cursor:pointer;padding:15px 16px;font-weight:700;list-style:none;min-height:44px;display:flex;align-items:center}
.acc summary::-webkit-details-marker{display:none}
.acc summary::after{content:"+";margin-left:auto;color:var(--gold);font-size:1.4em}
.acc[open] summary::after{content:"–"}
.acc-body{padding:0 16px 15px;color:var(--muted)}
/* footer */
.footer{background:var(--bg2);border-top:1px solid var(--line);margin-top:44px}
.foot-grid{max-width:1120px;margin:0 auto;display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:24px;padding:32px 16px}
.foot-name{font-weight:800;font-size:1.12em;margin-bottom:8px}
.footer h3{font-size:.95em;margin:0 0 10px}
.footer ul{list-style:none;padding:0;margin:0}
.footer li{margin:.3em 0}
.footer a{color:var(--muted);text-decoration:none}
.footer a:hover{color:var(--txt)}
.muted{color:var(--muted);font-size:.85em}
.badge18{display:inline-block;border:2px solid var(--bad);color:var(--bad);border-radius:8px;padding:2px 9px;font-weight:800;margin-top:8px}
.foot-legal{max-width:1120px;margin:0 auto;padding:16px;border-top:1px solid var(--line);color:var(--muted);font-size:.8em}
/* to-top */
.to-top{position:fixed;right:16px;bottom:16px;width:44px;height:44px;border-radius:50%;border:0;background:var(--crimson);color:#fff;font-size:1.3em;cursor:pointer;opacity:0;pointer-events:none;transition:.2s;z-index:40}
.to-top.show{opacity:1;pointer-events:auto}
@media(max-width:860px){
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:720px){
  body{font-size:16px}
  h1{font-size:1.5em}h2{font-size:1.25em}h3{font-size:1.08em}
  main{padding:14px 12px 40px}
  .burger{display:flex}
  .nav-main{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;gap:0;background:var(--bg2);border-bottom:1px solid var(--line);padding:8px 12px 14px}
  .nav-main.open{display:flex}
  .nav-main a{padding:12px 6px;border-bottom:1px solid var(--line)}
  .nav-cta{margin-top:10px;border-bottom:0!important}
  .proscons{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .meter span{flex-basis:104px}
  .shot img{width:100%}
  .calc-row label{flex-basis:100%}
}