:root{
  --ink:#13242b;
  --muted:#5f727a;
  --deep:#0b3545;
  --teal:#0d7894;
  --cyan:#20a7c7;
  --sky:#dff6fb;
  --ice:#f6fbfd;
  --white:#ffffff;
  --line:#d9e8ec;
  --good:#11634f;
  --warn:#8a5a00;
  --shadow:0 18px 55px rgba(10,53,69,.12);
  --radius:22px;
  --max:1160px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--white);line-height:1.68}
img{max-width:100%;height:auto}
a{color:var(--teal);text-decoration-thickness:1.5px;text-underline-offset:3px}
a:hover{color:#07596e}
.container{width:min(var(--max),calc(100% - 36px));margin-inline:auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(14px);border-bottom:1px solid rgba(217,232,236,.9)}
.header-inner{min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:11px;color:var(--deep);font-weight:850;text-decoration:none;letter-spacing:-.02em}
.brand-mark{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(145deg,var(--deep),var(--cyan));box-shadow:0 7px 20px rgba(13,120,148,.18)}
.brand-mark svg{width:24px;height:24px}
.nav{display:flex;align-items:center;gap:6px}
.nav a{color:#27404a;text-decoration:none;font-weight:700;font-size:.94rem;padding:10px 12px;border-radius:11px}
.nav a:hover,.nav a[aria-current="page"]{background:var(--ice);color:var(--teal)}
.nav .nav-cta{background:linear-gradient(135deg,var(--teal),var(--cyan));color:#fff;box-shadow:0 8px 22px rgba(13,120,148,.22)}
.nav .nav-cta:hover{color:#fff;filter:brightness(.98)}
.menu-btn{display:none;border:1px solid var(--line);background:white;border-radius:12px;padding:9px 11px;font-size:1rem}
.hero{position:relative;overflow:hidden;background:
 radial-gradient(circle at 82% 18%,rgba(32,167,199,.22),transparent 28%),
 radial-gradient(circle at 16% 82%,rgba(13,120,148,.14),transparent 26%),
 linear-gradient(180deg,#fbfeff,#edf9fc);border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;min-height:620px;padding:76px 0}
.eyebrow{display:inline-flex;gap:8px;align-items:center;font-weight:800;font-size:.82rem;letter-spacing:.08em;text-transform:uppercase;color:var(--teal);background:rgba(255,255,255,.75);border:1px solid #cbe9ef;border-radius:999px;padding:7px 11px}
h1,h2,h3{line-height:1.13;letter-spacing:-.035em;color:var(--deep);margin:0 0 .65em}
h1{font-size:clamp(2.55rem,6vw,5rem);max-width:13ch}
h2{font-size:clamp(1.75rem,3vw,2.75rem)}
h3{font-size:1.25rem}
.lead{font-size:1.18rem;color:#40565f;max-width:700px}
.hero-actions,.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:13px;padding:13px 18px;font-weight:850;text-decoration:none;border:1px solid transparent;line-height:1.2}
.btn-primary{background:linear-gradient(135deg,var(--teal),var(--cyan));color:#fff;box-shadow:0 11px 28px rgba(13,120,148,.24)}
.btn-primary:hover{color:#fff;transform:translateY(-1px)}
.btn-secondary{background:white;color:var(--deep);border-color:var(--line)}
.btn-secondary:hover{color:var(--teal)}
.product-stage{position:relative;min-height:470px;display:grid;place-items:center}
.product-stage:before{content:"";position:absolute;width:86%;aspect-ratio:1;border-radius:50%;background:radial-gradient(circle,rgba(32,167,199,.22),rgba(255,255,255,0) 65%)}
.product-stage img{position:relative;width:min(520px,94%);filter:drop-shadow(0 28px 28px rgba(10,53,69,.18))}
.trust-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:-30px auto 36px;position:relative;z-index:2}
.trust-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:17px;box-shadow:0 8px 26px rgba(10,53,69,.06)}
.trust-card strong{display:block;color:var(--deep);font-size:.98rem}.trust-card span{font-size:.86rem;color:var(--muted)}
.section{padding:74px 0}
.section.tight{padding:46px 0}
.section.alt{background:var(--ice);border-block:1px solid var(--line)}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:25px;box-shadow:0 10px 34px rgba(10,53,69,.055)}
.card h3{margin-bottom:8px}
.card p:last-child{margin-bottom:0}
.kicker{color:var(--teal);font-weight:850;text-transform:uppercase;letter-spacing:.08em;font-size:.78rem}
.article-shell{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:46px;align-items:start}
.article{max-width:790px}
.article h1{font-size:clamp(2.45rem,5vw,4.5rem);max-width:16ch;margin-bottom:22px}
.article h2{margin-top:2.1em}
.article h3{margin-top:1.6em}
.article p,.article li{font-size:1.03rem}
.article ul,.article ol{padding-left:1.3rem}
.article .updated{color:var(--muted);font-size:.91rem}
.sidebar{position:sticky;top:100px}
.offer-card{background:linear-gradient(180deg,#f2fbfd,#fff);border:1px solid #cde9ef;border-radius:24px;padding:22px;box-shadow:var(--shadow)}
.offer-card img{width:100%;max-height:220px;object-fit:contain}
.offer-card .btn{width:100%}
.disclosure{font-size:.88rem;color:#5a7079;background:#f8fbfc;border:1px solid var(--line);border-radius:12px;padding:11px 13px;margin:18px 0}
.notice{border-left:4px solid var(--teal);background:#eff9fb;border-radius:0 14px 14px 0;padding:16px 18px;margin:25px 0}
.notice.warn{border-left-color:#c77d00;background:#fff8ea}
.notice.good{border-left-color:var(--good);background:#eff9f5}
.checklist{list-style:none;padding:0!important}
.checklist li{padding-left:30px;position:relative;margin:9px 0}
.checklist li:before{content:"✓";position:absolute;left:0;top:0;color:var(--teal);font-weight:900}
.table-wrap{overflow-x:auto;margin:26px 0}
table{width:100%;border-collapse:separate;border-spacing:0;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#fff}
th,td{padding:14px 15px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
th{background:#eff9fb;color:var(--deep);font-size:.9rem}
tr:last-child td{border-bottom:none}
.comparison-highlight{background:linear-gradient(180deg,#fbfeff,#f0fbfd);border:1px solid #c7e8ee;border-radius:20px;padding:22px;margin:30px 0}
.source-list{font-size:.93rem;color:#4f636c}
.source-list li{margin:.55em 0}
.breadcrumbs{font-size:.88rem;color:var(--muted);padding-top:26px}
.breadcrumbs a{color:var(--muted)}
.category-hero{background:linear-gradient(180deg,#f8fdfe,#fff);border-bottom:1px solid var(--line)}
.category-hero .container{padding:58px 0 48px}
.category-hero h1{font-size:clamp(2.3rem,5vw,4.3rem)}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:30px 0}
.price-card{border:1px solid var(--line);border-radius:20px;padding:22px;background:#fff}
.price-card.featured{border-color:#76cbdd;box-shadow:0 14px 40px rgba(13,120,148,.12)}
.price{font-size:2.25rem;font-weight:900;line-height:1;color:var(--deep)}
.price small{font-size:.85rem;color:var(--muted);font-weight:650}
.pro-con{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:28px 0}
.pro,.con{border-radius:16px;padding:20px;border:1px solid var(--line);background:#fff}
.pro h3{color:var(--good)} .con h3{color:#8a4c00}
.site-footer{background:#092c3a;color:#d8e9ee;margin-top:70px}
.footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:35px;padding:54px 0 28px}
.site-footer a{color:#d8eef3}
.site-footer h3{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:20px 0 32px;color:#aac1c8;font-size:.84rem}
.footer-links{display:flex;gap:14px;flex-wrap:wrap}
.promo-overlay{position:fixed;inset:0;z-index:1000;background:rgba(4,20,27,.74);backdrop-filter:blur(10px);display:none;align-items:center;justify-content:center;padding:20px}
.promo-overlay.is-open{display:flex}
.promo-panel{width:min(970px,100%);max-height:92vh;overflow:auto;background:
 radial-gradient(circle at 80% 15%,rgba(32,167,199,.28),transparent 32%),
 linear-gradient(155deg,#fff 0%,#eaf8fb 100%);
 border-radius:28px;box-shadow:0 30px 100px rgba(0,0,0,.34);position:relative;border:1px solid #c9e8ef}
.promo-grid{display:grid;grid-template-columns:.88fr 1.12fr;align-items:center;min-height:560px}
.promo-image{padding:24px;display:grid;place-items:center}
.promo-image img{width:100%;max-height:470px;object-fit:contain;filter:drop-shadow(0 24px 20px rgba(11,53,69,.18))}
.promo-copy{padding:46px 46px 46px 10px}
.promo-copy h2{font-size:clamp(2.2rem,5vw,4rem)}
.promo-close{position:absolute;right:15px;top:15px;border:1px solid var(--line);background:#fff;border-radius:999px;width:42px;height:42px;font-size:1.35rem;cursor:pointer;z-index:2}
.promo-copy .btn{font-size:1.05rem;padding:15px 20px}
.ad-label{font-size:.74rem;text-transform:uppercase;letter-spacing:.12em;font-weight:850;color:var(--muted)}
.faq details{border:1px solid var(--line);border-radius:14px;padding:0 18px;background:#fff;margin:12px 0}
.faq summary{cursor:pointer;font-weight:800;color:var(--deep);padding:16px 0}
.faq details p{margin-top:0}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin:26px 0}
.stat{background:#eef9fb;border:1px solid #cde9ef;border-radius:16px;padding:18px}
.stat strong{display:block;font-size:1.5rem;color:var(--deep)}
.tag{display:inline-block;padding:5px 9px;border-radius:999px;background:#eef9fb;color:var(--teal);font-size:.78rem;font-weight:800;margin:3px}
@media (max-width:900px){
  .hero-grid,.article-shell,.promo-grid{grid-template-columns:1fr}
  .hero-grid{gap:10px;padding:58px 0 40px}
  .product-stage{min-height:360px}
  .trust-strip{grid-template-columns:repeat(2,1fr);margin-top:0}
  .sidebar{position:static}
  .grid-3,.price-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .promo-copy{padding:0 28px 34px}
  .promo-image img{max-height:300px}
  .promo-grid{min-height:auto}
}
@media (max-width:700px){
  .nav{display:none;position:absolute;top:73px;left:18px;right:18px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:10px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
  .nav.open{display:flex}
  .nav a{text-align:center}
  .menu-btn{display:block}
  .brand span:last-child{font-size:.93rem}
  .grid-2,.pro-con,.stat-grid{grid-template-columns:1fr}
  .trust-strip{grid-template-columns:1fr 1fr}
  .section{padding:55px 0}
  .footer-grid{grid-template-columns:1fr}
  .hero h1{font-size:2.7rem}
}
@media (max-width:450px){
  .container{width:min(var(--max),calc(100% - 24px))}
  .trust-strip{grid-template-columns:1fr}
  .promo-overlay{padding:8px}
  .promo-panel{border-radius:20px}
  .promo-copy{padding:0 18px 25px}
  .promo-image{padding:22px 18px 5px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn{transition:none}}