:root{
  --navy:#0d1526; --navy-2:#131f36; --panel:#182541; --line:#26324f;
  --gold:#f5b02e; --gold-2:#ffcb5c; --amber:#ff8a3d; --ink:#eaf0fb;
  --muted:#a9b6d1; --good:#37d19a; --bad:#ff6b6b; --radius:10px;
  --font:'Sora',system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;
}
*{box-sizing:border-box}
html,body{width:100%;overflow-x:hidden;margin:0}
body{background:var(--navy);color:var(--ink);font-family:var(--font);
  font-size:17px;line-height:1.7;-webkit-font-smoothing:antialiased}
.wrap{max-width:1080px;margin:0 auto;padding:0 22px}
a{color:var(--gold-2)}
main a{text-decoration:underline;text-underline-offset:2px}
h1,h2,h3,h4{line-height:1.25;font-weight:700;color:#fff}
h1{font-size:2.05rem;margin:.2em 0 .5em;font-weight:800}
h2{font-size:1.5rem;margin:1.9rem 0 .7rem}
h3{font-size:1.18rem;margin:1.4rem 0 .5rem}
p{margin:.5rem 0 1rem}
main ul,main ol{margin:.6rem 0 1.3rem;padding-left:1.3rem}
main li{margin:.35rem 0}
strong{color:#fff}

/* header */
.site-header{position:sticky;top:0;z-index:40;background:rgba(13,21,38,.92);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.head-row{display:flex;align-items:center;gap:14px;min-height:62px}
.brand-logo{font-weight:800;font-size:1.24rem;color:#fff;text-decoration:none;
  letter-spacing:.2px;white-space:nowrap}
.brand-logo::before{content:"▲";color:var(--gold);margin-right:.4rem;font-size:.85em}
.nav-wrap{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav-main{display:flex;flex-wrap:nowrap;gap:4px}
.nav-main a{color:var(--muted);text-decoration:none;font-size:.93rem;font-weight:600;
  padding:8px 9px;border-radius:7px;white-space:nowrap}
.nav-main a:hover,.nav-main a.active{color:#fff;background:var(--panel)}
.nav-toggle{display:none;margin-left:auto;background:none;border:0;cursor:pointer;
  width:44px;height:44px;padding:9px}
.nav-toggle span{display:block;height:2px;background:#fff;margin:5px 0;border-radius:2px}
.btn{display:inline-block;border:0;border-radius:8px;font-weight:700;cursor:pointer;
  text-decoration:none;text-align:center}
.btn-cta{background:linear-gradient(180deg,var(--gold-2),var(--gold));color:#22160a;
  padding:10px 16px;font-size:.92rem;white-space:nowrap}
.btn-cta:hover{filter:brightness(1.06)}
.btn-big{font-size:1.06rem;padding:15px 28px}

/* crumbs */
.crumbs{padding-top:14px;padding-bottom:2px;color:var(--muted);font-size:.86rem}
.crumbs a{color:var(--muted)}
.crumbs span{opacity:.7}

/* main */
main{padding-top:14px;padding-bottom:40px}
.lede{font-size:1.16rem;color:#f4f7ff;background:var(--navy-2);
  border-left:3px solid var(--gold);padding:14px 18px;border-radius:8px}
.hero-fig{margin:14px 0 22px}
.hero-img{display:block;margin:0 auto;width:90%;max-width:100%;height:auto;
  border-radius:12px;box-shadow:0 12px 34px rgba(0,0,0,.45)}
figure{margin:0}
figcaption{color:var(--muted);font-size:.85rem;text-align:center;margin-top:.5rem}

.panel{background:var(--navy-2);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px 18px;margin:1.2rem 0}
.pros-cons{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.pros-cons h4{margin:.2rem 0 .4rem}
.pros li::marker{color:var(--good)}
.cons li::marker{color:var(--bad)}

table{border-collapse:collapse;width:100%;min-width:440px;margin:.4rem 0}
th,td{border:1px solid var(--line);padding:9px 11px;text-align:left;font-size:.95rem}
th{background:var(--panel);color:#fff}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:1rem 0}

/* rating bars */
.rating{display:flex;align-items:center;gap:12px;margin:.4rem 0 1rem}
.rating .score{font-size:2rem;font-weight:800;color:var(--gold)}
.bars{flex:1}
.bar{display:flex;align-items:center;gap:10px;margin:4px 0;font-size:.85rem;color:var(--muted)}
.bar .track{flex:1;height:8px;background:var(--panel);border-radius:5px;overflow:hidden}
.bar .fill{height:100%;background:linear-gradient(90deg,var(--amber),var(--gold-2));width:0;
  transition:width 1.1s ease}

/* calculator */
.calc{background:var(--navy-2);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.calc label{display:block;margin:.7rem 0;font-weight:600}
.calc input[type=number]{background:var(--navy);color:#fff;border:1px solid var(--line);
  border-radius:7px;padding:9px 11px;font-size:1rem;width:150px}
.calc input[type=range]{width:100%;accent-color:var(--gold)}
.calc-out{font-size:1.1rem}
.calc-out strong{color:var(--gold-2)}
.calc-note{color:var(--muted);font-size:.84rem}

/* tabs */
.tab-btns{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:2px}
.tab-btn{background:var(--panel);color:var(--muted);border:1px solid var(--line);
  border-radius:8px 8px 0 0;padding:10px 16px;font-weight:600;cursor:pointer;min-height:44px}
.tab-btn.active{background:var(--navy-2);color:#fff;border-bottom-color:var(--navy-2)}
.tab-panel{display:none;background:var(--navy-2);border:1px solid var(--line);
  border-radius:0 8px 8px 8px;padding:14px 18px}
.tab-panel.active{display:block}

/* faq */
.faq{margin:2rem 0 1rem}
.faq-item{background:var(--navy-2);border:1px solid var(--line);border-radius:8px;
  margin:8px 0;padding:2px 16px}
.faq-item summary{cursor:pointer;font-weight:600;padding:12px 0;list-style:none;
  min-height:44px;display:flex;align-items:center}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";margin-left:auto;color:var(--gold);font-size:1.3rem}
.faq-item[open] summary::after{content:"–"}
.faq-a{padding-bottom:10px;color:#dbe4f7}

/* cta */
.cta-block{background:linear-gradient(120deg,var(--panel),var(--navy-2));
  border:1px solid var(--line);border-radius:14px;padding:22px;text-align:center;margin:2rem 0}
.cta-block p{margin:.2rem 0 1rem;color:#f2f6ff}

/* footer */
.site-footer{background:#0a1120;border-top:1px solid var(--line);margin-top:30px;padding:26px 0 40px}
.foot-grid{display:grid;grid-template-columns:1fr 1fr 1.6fr;gap:24px}
.foot-col h4{margin:.2rem 0 .6rem;font-size:1rem}
.foot-col ul{list-style:none;padding:0;margin:0}
.foot-col li{margin:.3rem 0}
.foot-col a{color:var(--muted);text-decoration:none}
.foot-col a:hover{color:#fff}
.age-badge{display:inline-block;background:var(--bad);color:#fff;font-weight:800;
  border-radius:6px;padding:2px 8px;margin-bottom:8px}
.foot-rg p{color:var(--muted);font-size:.86rem}
.legal{border-top:1px solid var(--line);margin-top:18px;padding-top:14px}
.legal p{color:#7f8db0;font-size:.8rem}

/* progress + to-top */
.scroll-progress{position:fixed;top:0;left:0;height:3px;width:0;
  background:linear-gradient(90deg,var(--amber),var(--gold-2));z-index:60}
.to-top{position:fixed;right:18px;bottom:18px;width:46px;height:46px;border-radius:50%;
  border:0;background:var(--gold);color:#22160a;font-size:1.3rem;font-weight:800;cursor:pointer;
  opacity:0;pointer-events:none;transition:opacity .25s;z-index:50}
.to-top.show{opacity:1;pointer-events:auto}

/* lightbox */
.lb-overlay{position:fixed;inset:0;background:rgba(4,8,16,.9);display:flex;align-items:center;
  justify-content:center;z-index:80;padding:20px}
.lb-overlay img{max-width:96%;max-height:92%;border-radius:10px}

@media(max-width:820px){
  body{font-size:16px}
  h1{font-size:1.55rem}
  h2{font-size:1.28rem}
  h3{font-size:1.08rem}
  .head-row{position:relative}
  .nav-toggle{display:block;margin-left:auto}
  .nav-wrap{display:none;position:absolute;left:0;right:0;top:62px;margin-left:0;
    flex-direction:column;align-items:stretch;gap:8px;
    background:var(--navy-2);border-bottom:1px solid var(--line);padding:12px 22px}
  .nav-wrap.open{display:flex}
  .nav-main{display:flex;flex-direction:column;gap:2px}
  .nav-main a{padding:12px 8px}
  .header-cta{align-self:flex-start;padding:11px 16px;font-size:.9rem}
  .foot-grid{grid-template-columns:1fr}
  .pros-cons{grid-template-columns:1fr}
  .hero-img{width:100%}
  table{min-width:520px}
}