:root{
  --navy:#0b1a2b; --navy2:#132a42; --ink:#16202e; --muted:#5a6b7d;
  --line:#e2e9f2; --bg:#f4f8fd; --card:#ffffff;
  --sky:#2f8ff0; --sky-d:#1b6fd0; --sun:#ff7a3d; --sun-d:#e85f22;
  --ok:#1f9d63; --bad:#d1462f; --radius:12px;
  --wrap:1080px;
}
*{box-sizing:border-box}
html,body{width:100%;overflow-x:hidden}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:"Plus Jakarta Sans",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  font-size:17px;line-height:1.7;-webkit-font-smoothing:antialiased}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 22px}
a{color:var(--sky-d)}
img{max-width:100%;height:auto}
h1,h2,h3{line-height:1.25;color:var(--navy);font-weight:800}
h1{font-size:2em;margin:.2em 0 .5em}
h2{font-size:1.5em;margin:1.7em 0 .5em}
h3{font-size:1.18em;margin:1.3em 0 .4em;font-weight:700}
p{margin:0 0 1em}
main ul,main ol{margin:0 0 1.2em;padding-left:1.3em}
main li{margin:.35em 0}

/* header */
.site-head{position:sticky;top:0;z-index:40;background:rgba(11,26,43,.97);
  backdrop-filter:blur(6px);border-bottom:1px solid rgba(255,255,255,.08)}
.head-row{display:flex;align-items:center;gap:16px;min-height:64px}
.brand-logo{color:#fff;font-weight:800;font-size:1.28em;text-decoration:none;letter-spacing:-.01em;white-space:nowrap}
.nav-main{margin-left:auto;display:flex;align-items:center;gap:18px}
.nav-main ul{list-style:none;display:flex;gap:4px;margin:0;padding:0;flex-wrap:nowrap}
.nav-main a{color:#d7e3f2;text-decoration:none;font-weight:600;font-size:.95em;
  padding:8px 10px;border-radius:8px;white-space:nowrap}
.nav-main a:hover,.nav-main a[aria-current]{color:#fff;background:rgba(255,255,255,.10)}
.btn{display:inline-block;border:0;border-radius:10px;font-weight:700;cursor:pointer;
  text-decoration:none;text-align:center;transition:transform .05s,background .15s}
.btn-cta{background:linear-gradient(135deg,var(--sun),var(--sun-d));color:#fff;
  padding:10px 18px;box-shadow:0 4px 14px rgba(232,95,34,.35)}
.btn-cta:hover{transform:translateY(-1px)}
.nav-cta{font-size:.95em;white-space:nowrap}
.nav-toggle{display:none;margin-left:auto;background:transparent;border:0;cursor:pointer;
  width:44px;height:44px;flex-direction:column;justify-content:center;gap:5px;padding:0}
.nav-toggle span{display:block;height:2px;width:24px;background:#fff;margin:0 auto;border-radius:2px;transition:.2s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* breadcrumb */
.crumbs{background:#eaf1fa;border-bottom:1px solid var(--line);font-size:.9em}
.crumbs .wrap{padding-top:10px;padding-bottom:10px;color:var(--muted)}
.crumbs a{color:var(--sky-d);text-decoration:none}
.crumbs span{color:var(--muted)}

/* main */
.main-col{padding-top:26px;padding-bottom:40px}
.hero-fig{margin:0 0 1.4em}
.hero-fig img{width:100%;border-radius:var(--radius);display:block;box-shadow:0 10px 30px rgba(11,26,43,.12)}
.lede{font-size:1.12em;color:#243244;font-weight:500;background:linear-gradient(180deg,#fff,#f0f6fd);
  border:1px solid var(--line);border-left:4px solid var(--sun);border-radius:var(--radius);padding:16px 18px}

/* verdict / cards */
.verdict{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:1.5em 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;
  box-shadow:0 2px 10px rgba(11,26,43,.05)}
.card h3{margin-top:0}
.pros li::marker{content:"✔ "}
.cons li::marker{content:"✘ "}
.pros li{color:#17603c}
.cons li{color:#8a2c1c}
.specs{width:100%;border-collapse:collapse;margin:.4em 0 1.2em;font-size:.97em}
.specs th,.specs td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.specs th{background:#eef4fb;width:42%;color:var(--navy);font-weight:700}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 1.2em}

.callout{background:#fff6f0;border:1px solid #ffd9c2;border-left:4px solid var(--sun);
  border-radius:var(--radius);padding:14px 18px;margin:1.3em 0}
.callout.info{background:#eef6ff;border-color:#cfe4fb;border-left-color:var(--sky)}
.note{font-size:.86em;color:var(--muted)}

/* steps */
.steps{counter-reset:step;list-style:none;padding-left:0}
.steps li{position:relative;padding:2px 0 2px 44px;margin:.5em 0}
.steps li::before{counter-increment:step;content:counter(step);position:absolute;left:0;top:0;
  width:30px;height:30px;border-radius:50%;background:var(--sky);color:#fff;font-weight:700;
  display:flex;align-items:center;justify-content:center;font-size:.9em}

/* cta block */
.cta-block{background:linear-gradient(135deg,var(--navy),var(--navy2));color:#eaf2fb;
  border-radius:16px;padding:24px;margin:1.8em 0;text-align:center}
.cta-block h3{color:#fff;margin-top:0}
.cta-block .btn-cta{font-size:1.05em;padding:13px 26px;margin-top:6px}
.cta-block p{color:#c4d4e6;margin-bottom:.3em}

/* tabs */
.tabs{margin:1.3em 0}
.tab-btns{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.tab-btns button{background:#e7eef8;border:1px solid var(--line);color:var(--navy);
  padding:8px 14px;border-radius:20px;font-weight:600;cursor:pointer;font-size:.92em}
.tab-btns button[aria-selected="true"]{background:var(--sky);color:#fff;border-color:var(--sky)}
.tab-panel{display:none;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px}
.tab-panel.active{display:block}

/* calculator */
.calc{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;margin:1.4em 0}
.calc label{display:block;font-weight:600;margin:.6em 0 .2em;color:var(--navy)}
.calc input[type=range]{width:100%}
.calc-out{font-size:1.05em;margin-top:12px;padding:12px 14px;background:#eef6ff;border-radius:10px}
.calc-out b{color:var(--sky-d)}

/* faq */
.faq details{background:var(--card);border:1px solid var(--line);border-radius:10px;margin:.6em 0;padding:0 16px}
.faq summary{cursor:pointer;font-weight:700;color:var(--navy);padding:14px 0;list-style:none;position:relative;padding-right:28px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:2px;top:12px;font-size:1.3em;color:var(--sky)}
.faq details[open] summary::after{content:"–"}
.faq details[open] summary{border-bottom:1px solid var(--line)}
.faq details p{padding-top:12px}

/* footer */
.site-foot{background:var(--navy);color:#c4d4e6;margin-top:30px;padding:34px 0 12px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:26px}
.foot-brand{color:#fff;font-weight:800;font-size:1.2em;margin-bottom:8px}
.foot-col h3{color:#fff;font-size:1em;margin:0 0 10px}
.foot-col ul{list-style:none;margin:0;padding:0}
.foot-col li{margin:.3em 0}
.foot-col a{color:#c4d4e6;text-decoration:none}
.foot-col a:hover{color:#fff;text-decoration:underline}
.foot-note{font-size:.88em;color:#93a7bd}
.rg-links{display:flex;flex-direction:column;gap:2px}
.age-badge{display:inline-block;margin-top:10px;border:2px solid #ff7a3d;color:#ffb18a;
  border-radius:50%;width:44px;height:44px;line-height:40px;text-align:center;font-weight:800}
.legal{border-top:1px solid rgba(255,255,255,.1);margin-top:24px;padding-top:14px;font-size:.82em;color:#8ba0b7}

.to-top{position:fixed;right:18px;bottom:18px;width:46px;height:46px;border-radius:50%;border:0;
  background:var(--sky);color:#fff;font-size:1.3em;cursor:pointer;opacity:0;pointer-events:none;
  transition:opacity .2s;box-shadow:0 6px 18px rgba(27,111,208,.4);z-index:50}
.to-top.show{opacity:1;pointer-events:auto}

@media(max-width:820px){
  .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}
  .nav-toggle{display:flex}
  .nav-main{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;
    align-items:stretch;gap:0;background:var(--navy);padding:8px 0 14px;border-top:1px solid rgba(255,255,255,.08)}
  .nav-main.open{display:flex}
  .nav-main ul{flex-direction:column;gap:0;padding:0 12px}
  .nav-main a{padding:12px 10px;display:block}
  .nav-cta{margin:10px 12px 0;padding:12px}
  .verdict{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
}