:root{
    --bg:#f6fbfc;
    --paper:#ffffff;
    --ink:#10232b;
    --muted:#60737c;
    --line:#dcebef;
    --sea:#0f8aa6;
    --sea2:#0d6f88;
    --sand:#f4d7a1;
    --soft:#eaf7fa;
    --shadow:0 22px 70px rgba(11,64,78,.12);
    --radius:26px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
    margin:0;
    font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
    color:var(--ink);
    background:var(--bg);
    line-height:1.6;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1160px,calc(100% - 36px));margin:0 auto}
.site-header{
    position:sticky;top:0;z-index:20;
    background:rgba(255,255,255,.88);
    backdrop-filter:blur(18px);
    border-bottom:1px solid rgba(220,235,239,.85);
}
.header-inner{height:76px;display:flex;align-items:center;gap:26px}
.brand{display:flex;align-items:center;gap:12px;min-width:max-content}
.brand-mark{
    width:42px;height:42px;border-radius:14px;
    display:grid;place-items:center;
    background:linear-gradient(135deg,var(--sea),#25bdd6);
    color:white;font-weight:900;font-size:22px;
    box-shadow:0 14px 30px rgba(15,138,166,.28)
}
.brand strong{display:block;font-size:20px;line-height:1}
.brand em{display:block;font-style:normal;font-size:12px;color:var(--muted);margin-top:3px}
.main-nav{display:flex;gap:18px;margin-left:auto}
.main-nav a{font-size:14px;color:#29444e;font-weight:650}
.main-nav a:hover{color:var(--sea)}
.lang-switch{
    display:flex;gap:5px;padding:5px;border:1px solid var(--line);border-radius:999px;background:white
}
.lang-switch a{
    font-size:12px;font-weight:800;letter-spacing:.04em;
    padding:7px 10px;border-radius:999px;color:var(--muted)
}
.lang-switch a.active{background:var(--sea);color:white}
.menu-btn{display:none;border:0;background:var(--ink);color:white;border-radius:12px;padding:10px 12px;font-size:18px}
.hero{position:relative;min-height:720px;display:flex;align-items:center;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(7,33,42,.83),rgba(7,33,42,.52),rgba(7,33,42,.12))}
.hero-bg img{width:100%;height:100%;object-fit:cover}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:38px;align-items:center}
.hero-content{color:white;max-width:780px}
.eyebrow,.section-kicker{
    display:inline-flex;align-items:center;gap:8px;
    color:#08758e;background:rgba(15,138,166,.1);
    padding:8px 13px;border-radius:999px;
    font-size:13px;font-weight:850;letter-spacing:.02em;
}
.hero .eyebrow{background:rgba(255,255,255,.14);color:#d8fbff;border:1px solid rgba(255,255,255,.18)}
.hero h1{font-size:clamp(42px,6vw,74px);line-height:.98;margin:22px 0 22px;letter-spacing:-.055em}
.hero p{font-size:20px;max-width:720px;color:#e8f8fb;margin:0 0 30px}
.hero-actions{display:flex;gap:13px;flex-wrap:wrap;margin-bottom:24px}
.btn{
    display:inline-flex;align-items:center;justify-content:center;
    min-height:48px;padding:0 22px;border-radius:999px;
    font-weight:850;border:1px solid transparent
}
.btn.primary{background:var(--sand);color:#38260a}
.btn.ghost{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.25);color:white}
.trust-row{display:flex;flex-wrap:wrap;gap:11px}
.trust-row span{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);padding:7px 11px;border-radius:999px;font-size:13px;color:#e9fbff}
.hero-panel{
    background:rgba(255,255,255,.93);border:1px solid rgba(255,255,255,.5);
    border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)
}
.hero-panel strong{display:block;font-size:22px;margin-bottom:8px}
.hero-panel p{color:var(--muted);margin:0 0 18px}
.hero-panel a{font-weight:850;color:var(--sea)}
.section{padding:78px 0}
.section.soft{background:var(--soft)}
.two-col{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;align-items:start}
.section h2{font-size:clamp(30px,4vw,48px);line-height:1.08;letter-spacing:-.04em;margin:14px 0 0}
.prose p{color:#425963;font-size:18px;margin:0 0 18px}
.section-head{max-width:720px;margin-bottom:30px}
.section-head h2{margin:14px 0 10px}
.section-head p{color:var(--muted);font-size:18px;margin:0}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{
    background:var(--paper);border:1px solid var(--line);
    border-radius:24px;overflow:hidden;box-shadow:0 18px 50px rgba(17,58,72,.08);
    transition:.22s ease
}
.card:hover{transform:translateY(-4px);box-shadow:0 26px 70px rgba(17,58,72,.14)}
.card-img{position:relative;height:220px;display:block;overflow:hidden}
.card-img img{width:100%;height:100%;object-fit:cover;transition:.35s ease}
.card:hover .card-img img{transform:scale(1.04)}
.card-img span{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.9);border-radius:999px;padding:7px 11px;font-size:12px;font-weight:850;color:#16404a}
.card-body{padding:22px}
.card-body h3{margin:0 0 8px;font-size:23px;letter-spacing:-.02em}
.card-body p{margin:0;color:var(--muted)}
.guide-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.guide-item{
    background:white;border:1px solid var(--line);border-radius:22px;padding:22px;
    min-height:180px;display:flex;flex-direction:column;justify-content:space-between;
    box-shadow:0 14px 42px rgba(17,58,72,.06)
}
.guide-item strong{font-size:20px;line-height:1.15}
.guide-item span{color:var(--muted);font-size:15px;margin-top:18px}
.faq-list{display:grid;gap:12px}
details{background:white;border:1px solid var(--line);border-radius:18px;padding:17px 20px}
summary{cursor:pointer;font-weight:850}
details p{margin:10px 0 0;color:var(--muted)}
.site-footer{background:#082b35;color:white;padding:48px 0}
.footer-grid{display:grid;grid-template-columns:1fr 180px 180px;gap:32px}
.footer-grid p{color:#bdd5dc;max-width:560px}
.footer-grid span{display:block;font-weight:900;margin-bottom:8px;color:#e8fbff}
.footer-grid a{display:block;color:#bdd5dc;margin:5px 0}
.article-hero{position:relative;background:#082b35;color:white}
.article-image{height:430px;opacity:.48}
.article-image img{width:100%;height:100%;object-fit:cover}
.article-head{padding:0 0 54px;margin-top:-220px;position:relative;z-index:1}
.article-head h1{font-size:clamp(38px,5vw,64px);line-height:1;letter-spacing:-.05em;max-width:860px;margin:18px 0}
.article-head p{font-size:20px;color:#e5f7fb;max-width:820px}
.back-link{display:inline-block;margin-bottom:20px;color:#d9f8ff;font-weight:800}
.fact-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.fact-row span{background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.2);padding:8px 12px;border-radius:999px;font-size:13px;font-weight:800}
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 320px;gap:58px;align-items:start}
.article-content{background:white;border:1px solid var(--line);border-radius:28px;padding:42px;box-shadow:var(--shadow)}
.article-content h2{font-size:34px;line-height:1.15;letter-spacing:-.035em;margin:36px 0 14px}
.article-content h2:first-child{margin-top:0}
.article-faq{margin-top:18px}
.sidebar{position:sticky;top:100px;display:grid;gap:18px}
.side-card,.side-note{background:white;border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:0 15px 45px rgba(17,58,72,.07)}
.side-card strong,.side-note strong{display:block;font-size:19px;margin-bottom:12px}
.side-card a{display:block;padding:11px 0;border-top:1px solid var(--line);color:var(--sea);font-weight:800}
.side-note p{margin:0;color:var(--muted)}
@media (max-width: 900px){
    .header-inner{height:68px}
    .main-nav{display:none;position:absolute;left:18px;right:18px;top:74px;background:white;border:1px solid var(--line);border-radius:18px;padding:14px;box-shadow:var(--shadow)}
    .main-nav.open{display:grid}
    .menu-btn{display:block;margin-left:0}
    .brand{margin-right:auto}
    .hero{min-height:760px}
    .hero-grid,.two-col,.article-layout{grid-template-columns:1fr}
    .hero-panel{display:none}
    .cards{grid-template-columns:1fr}
    .guide-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr}
    .article-head{margin-top:-260px}
    .article-content{padding:26px;border-radius:22px}
    .sidebar{position:static}
}
@media (max-width: 520px){
    .container{width:min(100% - 24px,1160px)}
    .lang-switch a{padding:6px 8px}
    .brand em{display:none}
    .hero h1{font-size:42px}
    .hero p{font-size:17px}
    .section{padding:54px 0}
    .card-img{height:190px}
}