:root{
  --night:#0e1219; --pane:#161c26; --pane2:#1c2432; --edge:#28323f;
  --moon:#e8edf5; --mute:#98a4b6; --gold:#e2a53f; --gold-dim:#b7822c;
  --howl:#7f9cc4; --good:#4fb783; --bad:#d9705f;
  --rad:10px; --shell:1140px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{width:100%;overflow-x:hidden}
body{
  background:var(--night); color:var(--moon);
  font-family:'Manrope',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif;
  font-size:17px; line-height:1.68; -webkit-font-smoothing:antialiased;
}
.shell{max-width:var(--shell); margin:0 auto; padding:0 22px; width:100%}
a{color:var(--gold); text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%; height:auto}

/* progress bar */
#howl-bar{position:fixed; top:0; left:0; height:3px; width:0; background:var(--gold); z-index:60; transition:width .1s linear}

/* header */
.top{position:sticky; top:0; z-index:50; background:rgba(14,18,25,.94); backdrop-filter:blur(8px); border-bottom:1px solid var(--edge)}
.top.pinned{box-shadow:0 8px 26px rgba(0,0,0,.45)}
.head-row{display:flex; align-items:center; gap:16px; flex-wrap:nowrap; min-height:66px}
.brand-logo{color:var(--moon); font-weight:800; font-size:20px; letter-spacing:0; white-space:nowrap; text-decoration:none}
.brand-logo:hover{text-decoration:none; color:var(--gold)}
.nav-wrap{margin-left:auto; display:flex; align-items:center; gap:10px; flex-wrap:nowrap}
.nav-main{display:flex; gap:2px; flex-wrap:nowrap; list-style:none}
.nav-main a{display:block; padding:8px 9px; color:var(--mute); font-size:13.5px; font-weight:600; white-space:nowrap; border-radius:6px}
.nav-main a:hover{color:var(--moon); background:var(--pane2); text-decoration:none}
.nav-main a[aria-current="page"]{color:var(--gold)}
.btn{display:inline-block; background:var(--gold); color:#141821; font-weight:800; padding:11px 18px; border-radius:8px; border:0; cursor:pointer; font-size:15px; text-align:center; line-height:1.2}
.btn:hover{background:#efb352; text-decoration:none}
.btn-sm{padding:9px 13px; font-size:13.5px; white-space:nowrap}
.burger{display:none; margin-left:auto; background:transparent; border:1px solid var(--edge); border-radius:8px; width:46px; height:44px; cursor:pointer; color:var(--moon); font-size:19px; line-height:1}

/* breadcrumbs */
.crumbs{border-bottom:1px solid var(--edge); background:var(--pane)}
.crumbs ol{list-style:none; display:flex; flex-wrap:wrap; gap:8px; padding:10px 0; font-size:13px; color:var(--mute)}
.crumbs a{color:var(--mute)}
.crumbs li+li:before{content:"›"; margin-right:8px; color:var(--edge)}

/* main */
main{display:block; padding:30px 0 10px}
h1{font-size:33px; line-height:1.24; font-weight:800; margin:6px 0 16px}
h2{font-size:25px; line-height:1.3; font-weight:800; margin:36px 0 12px}
h3{font-size:19px; font-weight:800; margin:24px 0 8px; color:var(--moon)}
p{margin:0 0 15px}
.snippet{font-size:18.5px; color:#dfe6f0; background:var(--pane); border-left:3px solid var(--gold); padding:15px 18px; border-radius:0 var(--rad) var(--rad) 0; margin-bottom:22px}
main ul,main ol{margin:0 0 18px 20px}
main li{margin:0 0 8px}
figure{margin:0 0 26px}
figure img{display:block; width:90%; height:auto; margin:0 auto; border-radius:var(--rad); box-shadow:0 10px 30px rgba(0,0,0,.4); cursor:zoom-in}
figcaption{text-align:center; color:var(--mute); font-size:13.5px; margin-top:9px}

.pane{background:var(--pane); border:1px solid var(--edge); border-radius:var(--rad); padding:18px 20px; margin:0 0 22px}
.pane h3{margin-top:0}
.split{display:grid; grid-template-columns:1fr 1fr; gap:16px; margin:0 0 22px}
.split .pane{margin:0}
.plus li::marker{color:var(--good)}
.minus li::marker{color:var(--bad)}
.note{background:rgba(226,165,63,.08); border:1px solid rgba(226,165,63,.3); color:#f0dcb4; border-radius:var(--rad); padding:13px 16px; margin:0 0 22px; font-size:15.5px}

.table-scroll{overflow-x:auto; -webkit-overflow-scrolling:touch; margin:0 0 22px; border:1px solid var(--edge); border-radius:var(--rad)}
table{border-collapse:collapse; width:100%; min-width:520px; font-size:15px}
th,td{padding:11px 13px; text-align:left; border-bottom:1px solid var(--edge)}
th{background:var(--pane2); color:var(--moon); font-weight:800; font-size:13.5px; text-transform:uppercase; letter-spacing:.04em}
tr:last-child td{border-bottom:0}

/* tabs */
.tabs{margin:0 0 22px}
.tab-btns{display:flex; gap:6px; flex-wrap:wrap; margin-bottom:0}
.tab-btns button{background:var(--pane); border:1px solid var(--edge); border-bottom:0; color:var(--mute); padding:10px 14px; font:inherit; font-size:14px; font-weight:700; border-radius:8px 8px 0 0; cursor:pointer; min-height:44px}
.tab-btns button[aria-selected="true"]{background:var(--pane2); color:var(--gold)}
.tab-body{background:var(--pane2); border:1px solid var(--edge); border-radius:0 var(--rad) var(--rad) var(--rad); padding:16px 18px}
.tab-body [role="tabpanel"][hidden]{display:none}

/* calculator */
.calc{background:var(--pane2); border:1px solid var(--edge); border-radius:var(--rad); padding:18px 20px; margin:0 0 22px}
.calc label{display:block; font-size:14px; color:var(--mute); font-weight:700; margin-bottom:6px}
.calc input[type=range]{width:100%; accent-color:var(--gold); height:26px}
.calc .out{display:flex; flex-wrap:wrap; gap:18px; margin-top:12px}
.calc .out div{flex:1 1 140px}
.calc .out span{display:block; font-size:23px; font-weight:800; color:var(--gold)}
.calc .out em{font-style:normal; font-size:13px; color:var(--mute)}

/* faq */
details{background:var(--pane); border:1px solid var(--edge); border-radius:var(--rad); margin:0 0 10px}
summary{cursor:pointer; padding:14px 16px; font-weight:700; list-style:none; min-height:44px; display:flex; align-items:center; gap:10px}
summary::-webkit-details-marker{display:none}
summary:before{content:"+"; color:var(--gold); font-weight:800; font-size:19px}
details[open] summary:before{content:"–"}
details p{padding:0 16px 14px; margin:0; color:#cfd8e5}
details[open] summary{color:var(--gold)}

/* cta */
.cta{background:linear-gradient(135deg,#1d2635,#131a24); border:1px solid var(--gold-dim); border-radius:var(--rad); padding:24px 22px; text-align:center; margin:30px 0 10px}
.cta p{color:var(--mute); margin:8px 0 16px; font-size:15.5px}
.cta h2{margin:0; font-size:22px}

/* lightbox */
.lightbox{position:fixed; inset:0; background:rgba(6,9,13,.92); display:flex; align-items:center; justify-content:center; padding:20px; z-index:70}
.lightbox[hidden]{display:none}
.lightbox img{max-width:96%; max-height:90vh; border-radius:var(--rad)}

/* back to top */
#totop{position:fixed; right:16px; bottom:16px; width:46px; height:46px; border-radius:50%; background:var(--gold); color:#141821; border:0; font-size:19px; font-weight:800; cursor:pointer; display:none; z-index:55}
#totop.on{display:block}

/* footer */
footer{border-top:1px solid var(--edge); background:var(--pane); margin-top:44px; padding:30px 0 22px}
.foot-grid{display:grid; grid-template-columns:1.2fr 1fr 1.4fr; gap:26px}
.foot-grid h4{font-size:13px; text-transform:uppercase; letter-spacing:.06em; color:var(--mute); margin-bottom:10px}
.foot-grid ul{list-style:none}
.foot-grid li{margin-bottom:6px}
.foot-grid a{color:#c3ccd9; font-size:14.5px}
.age{display:inline-block; border:2px solid var(--bad); color:var(--bad); font-weight:800; border-radius:50%; width:38px; height:38px; line-height:34px; text-align:center; font-size:13px; margin-bottom:10px}
.rg{color:var(--mute); font-size:14px}
.legal{border-top:1px solid var(--edge); margin-top:24px; padding-top:16px; color:var(--mute); font-size:13px}

@media (max-width:900px){
  .foot-grid{grid-template-columns:1fr}
  .split{grid-template-columns:1fr}
}
@media (max-width:820px){
  .burger{display:block}
  .nav-wrap{display:none; position:absolute; left:0; right:0; top:100%; background:var(--pane); border-bottom:1px solid var(--edge); padding:12px 22px; margin-left:0}
  .nav-wrap.open{display:flex; flex-direction:column; align-items:stretch; gap:8px}
  .nav-main{flex-direction:column; gap:2px}
  .nav-main a{padding:12px 10px; font-size:16px; min-height:44px}
  .top{position:relative}
  .head-row{position:relative}
}
@media (max-width:720px){
  body{font-size:16.5px}
  .shell{padding:0 22px}
  h1{font-size:25px}
  h2{font-size:20px}
  h3{font-size:17.5px}
  figure img{width:100%}
  .snippet{font-size:16.5px; padding:13px 15px}
}