:root{--ink:#0b2e33;--ink2:#17454b;--sea:#087f8c;--sea2:#16a3a6;--mint:#e9f8f5;--sand:#faf4e8;--line:#d7e5e3;--white:#fff;--muted:#597176;--shadow:0 14px 35px rgba(8,55,60,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);line-height:1.72;background:#fbfdfc}a{color:#056b77}img{max-width:100%}
.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;background:#fff;padding:10px;z-index:99}
.topbar{background:var(--ink);color:#d9ece9;font-size:.88rem}.topbar .inner{max-width:1240px;margin:auto;padding:8px 20px;display:flex;justify-content:space-between;gap:16px}.topbar a{color:#fff}
header{background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(10px)}.navwrap{max-width:1240px;margin:auto;padding:12px 20px;display:flex;align-items:center;gap:20px}.brand{font-weight:950;font-size:1.22rem;text-decoration:none;color:var(--ink);white-space:nowrap}.brand b{color:var(--sea)}nav{display:flex;gap:13px;align-items:center;flex:1}nav a{text-decoration:none;color:var(--ink2);font-weight:650;font-size:.88rem}.nav-cta{background:var(--sea);color:#fff!important;padding:10px 14px;border-radius:10px;margin-left:auto;box-shadow:var(--shadow)}
.hero{background:radial-gradient(circle at 80% 0%,#d8f3ed 0,transparent 42%),linear-gradient(145deg,#f4fbf9,#fff 60%,#fbf4e8);border-bottom:1px solid var(--line)}.hero .inner{max-width:1240px;margin:auto;padding:54px 20px 48px}.eyebrow{text-transform:uppercase;letter-spacing:.09em;font-weight:850;font-size:.78rem;color:var(--sea)}h1{font-size:clamp(2.25rem,5.2vw,4.5rem);line-height:1.02;letter-spacing:-.045em;margin:.18em 0;max-width:920px}h2{font-size:clamp(1.55rem,3vw,2.15rem);line-height:1.18;letter-spacing:-.025em;margin-top:2.2em}h3{font-size:1.2rem}.hero p{max-width:820px;font-size:1.18rem;color:var(--muted)}
.layout{max-width:1240px;margin:0 auto;padding:32px 20px 70px;display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:45px}main{min-width:0}.breadcrumbs{font-size:.84rem;color:var(--muted);margin-bottom:24px}.lede-copy{font-size:1.15rem}.note{background:var(--mint);border:1px solid #c8e8e2;border-left:5px solid var(--sea);padding:18px 20px;border-radius:12px;margin:25px 0}.sidebar{min-width:0}.sticky{position:sticky;top:90px}.side-card{border:1px solid var(--line);background:#fff;border-radius:18px;padding:21px;box-shadow:var(--shadow);margin-bottom:18px}.side-card h3{margin:.35em 0}.side-card ul{padding-left:18px}.btn{display:inline-block;background:var(--sea);color:#fff;text-decoration:none;padding:12px 16px;border-radius:10px;font-weight:850}.btn.light{background:#fff;color:var(--ink)}.micro{font-size:.78rem;color:var(--muted)}
.article-cta{background:linear-gradient(135deg,var(--ink),#16535a);color:#fff;border-radius:20px;padding:25px;margin:34px 0;box-shadow:var(--shadow)}.article-cta h2{margin:.3em 0}.article-cta p{max-width:680px}.article-cta small{display:block;color:#c8e2df;margin-top:10px}.article-cta .eyebrow{color:#77d8d5}
.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.related-card{display:flex;flex-direction:column;text-decoration:none;border:1px solid var(--line);border-radius:14px;padding:17px;background:#fff}.related-card span{color:var(--muted);font-size:.9rem;margin-top:5px}details{border-top:1px solid var(--line);padding:13px 0}summary{font-weight:800;cursor:pointer}.references{background:#f3f7f6;border-radius:14px;padding:18px 22px;margin-top:40px;font-size:.9rem}.references h2{font-size:1.2rem;margin-top:0}
.category-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:28px 0}.category-strip a{padding:16px;background:#fff;border:1px solid var(--line);border-radius:12px;text-decoration:none;font-weight:750}
footer{background:var(--ink);color:#d7e9e7;padding:40px 20px}.foot{max-width:1240px;margin:auto;display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}footer a{color:#fff}.footer-links{display:flex;flex-direction:column;gap:7px}
.offer-pop{position:fixed;inset:0;z-index:40;background:rgba(4,34,38,.78);backdrop-filter:blur(8px);display:grid;place-items:center;padding:20px}
.offer-pop[hidden]{display:none}
.offer-panel{width:min(900px,100%);background:#fff;border-radius:24px;box-shadow:0 30px 90px rgba(0,0,0,.35);display:grid;grid-template-columns:1fr 1.15fr;overflow:hidden;border:1px solid var(--line)}
.offer-art{min-height:430px;background:radial-gradient(circle at 30% 25%,#68d8d0 0 6%,transparent 7%),radial-gradient(circle at 68% 45%,#a8ebe2 0 11%,transparent 12%),linear-gradient(160deg,#0a6872,#0b2e33);position:relative;padding:34px;color:#fff;display:flex;flex-direction:column;justify-content:flex-end}
.offer-art:before{content:"";position:absolute;left:50%;top:46%;width:150px;height:190px;transform:translate(-50%,-50%) rotate(45deg);border-radius:70% 50% 70% 50%;background:linear-gradient(135deg,#a8fff3,#42bfc2);opacity:.9;box-shadow:0 20px 60px rgba(0,0,0,.2)}
.offer-art strong,.offer-art span{position:relative;z-index:1}.offer-art strong{font-size:1.45rem;line-height:1.15}.offer-art span{color:#d9f5f1}
.offer-copy{padding:34px;position:relative}.offer-close{position:absolute;right:18px;top:18px;border:0;background:#eef4f3;border-radius:50%;width:36px;height:36px;font-size:20px;cursor:pointer}.offer-copy h3{font-size:2rem;line-height:1.08;margin:.35em 0}.offer-copy .btn{width:100%;text-align:center}.offer-copy ul{padding-left:20px}.offer-pop .micro{margin-bottom:0}
.mobile-offer{display:none}
@media(max-width:980px){nav a:not(.nav-cta){display:none}.layout{grid-template-columns:1fr}.sticky{position:static}.sidebar{order:-1}.side-card.secondary{display:none}.related-grid{grid-template-columns:1fr}.foot{grid-template-columns:1fr}.category-strip{grid-template-columns:1fr 1fr}.offer-panel{grid-template-columns:1fr}.offer-art{display:none}.mobile-offer{display:block;position:fixed;bottom:0;left:0;right:0;z-index:25;background:var(--ink);padding:10px 14px;text-align:center}.mobile-offer a{color:#fff;font-weight:850;text-decoration:none}}
@media(max-width:600px){.topbar .inner span:last-child{display:none}.navwrap{padding:10px 14px}.brand{font-size:1.05rem}.nav-cta{font-size:.82rem;padding:9px 10px}.hero .inner{padding:38px 16px}.layout{padding:24px 16px 90px}.category-strip{grid-template-columns:1fr}.offer-pop{padding:10px}.offer-copy{padding:26px 20px}.offer-copy h3{font-size:1.6rem}}