:root{--bg:#f6f7fb;--paper:#fff;--text:#1f2937;--muted:#667085;--line:#e5e7eb;--accent:#1d4ed8;--shadow:0 12px 40px rgba(15,23,42,.08);--radius:24px;--content:1180px}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,Arial,Helvetica,sans-serif;background:radial-gradient(circle at top left,rgba(29,78,216,.06),transparent 26%),radial-gradient(circle at right 10% top 10%,rgba(15,118,110,.06),transparent 24%),var(--bg);color:var(--text);line-height:1.65}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--content);margin:0 auto;padding:0 20px}
.site-header{padding:18px 0;position:sticky;top:0;z-index:10;background:rgba(246,247,251,.86);backdrop-filter:blur(12px);border-bottom:1px solid rgba(229,231,235,.8)}
.site-header__row{display:flex;align-items:center;justify-content:space-between;gap:18px}
.logo{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:-.03em}
.logo-mark{width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,#1d4ed8,#0f766e);color:#fff;display:grid;place-items:center;font-size:20px;box-shadow:var(--shadow)}
.nav{display:flex;flex-wrap:wrap;gap:10px}
.nav a{padding:10px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#374151;font-size:14px}
.hero{padding:44px 0 20px}
.hero-card{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:stretch;background:linear-gradient(180deg,rgba(255,255,255,.96),rgba(255,255,255,.9));border:1px solid rgba(229,231,235,.9);border-radius:32px;box-shadow:var(--shadow);overflow:hidden}
.hero-main{padding:34px}
.kicker{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#eff6ff;color:#1d4ed8;font-size:13px;font-weight:700}
h1{font-size:clamp(34px,5vw,58px);line-height:1.04;letter-spacing:-.05em;margin:18px 0 16px}
.hero p{font-size:18px;color:#475467;max-width:740px}
.hero-side{padding:28px;background:linear-gradient(160deg,rgba(29,78,216,.09),rgba(15,118,110,.09));border-left:1px solid var(--line);display:flex;flex-direction:column;justify-content:space-between}
.hero-points{display:grid;gap:14px;margin-top:10px}
.hero-points div{background:#fff;border:1px solid var(--line);border-radius:20px;padding:14px 16px}
.section{padding:22px 0}
.section-title{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:18px}
.section-title h2{margin:0;font-size:28px;letter-spacing:-.04em}
.section-title p{margin:0;color:var(--muted)}
.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.topic-card,.article-card,.about-card,.contact-card,.article-body,.meta-strip,.cover-box,.promo-box{background:var(--paper);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow)}
.topic-card{padding:20px;min-height:160px}
.topic-card span{display:inline-block;padding:6px 10px;border-radius:999px;background:#f3f4f6;font-size:12px;color:#4b5563;margin-bottom:14px}
.topic-card h3{margin:0 0 8px;font-size:20px;letter-spacing:-.03em}
.topic-card p{margin:0;color:var(--muted);font-size:15px}

.article-grid{
    display:grid;
    grid-template-columns:repeat(3, minmax(0, 1fr));
    gap:18px;
    align-items:start;
}

.article-card{
    overflow:hidden;
    display:flex;
    flex-direction:column;
    height:auto;
}

.article-card__image{
    height:auto;
    aspect-ratio:auto;
    overflow:hidden;
    background:#eef2ff;
    padding:0;
    display:flex;
    align-items:center;
    justify-content:center;
}

.article-card__image img{
    width:100%;
    height:auto;
    object-fit:contain;
    display:block;
}

.article-card__body{
    padding:18px;
    display:flex;
    flex-direction:column;
    align-items:flex-start;
    flex:1 1 auto;
}

.meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px}
.meta span{font-size:12px;padding:6px 10px;border-radius:999px;background:#f8fafc;border:1px solid var(--line);color:#475467}
.article-card h3{margin:0 0 10px;font-size:22px;line-height:1.2;letter-spacing:-.03em}
.article-card p{margin:0 0 14px;color:var(--muted)}
.article-card .button{margin-top:auto}

.button{display:inline-flex;align-items:center;gap:10px;padding:12px 16px;border-radius:16px;background:#111827;color:#fff;font-weight:700;font-size:14px}
.button.alt{background:#fff;color:#111827;border:1px solid var(--line)}
.article-layout{padding:28px 0 50px}
.breadcrumbs{font-size:14px;color:var(--muted);margin-bottom:16px}
.article-top{
    display:grid;
    grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr);
    gap:22px;
    align-items:start;
}
.article-heading{padding:8px 0}
.article-heading h1{font-size:clamp(32px,4.8vw,52px);margin:12px 0}
.article-heading p{font-size:18px;color:#475467}
.meta-strip{padding:14px 18px;display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.meta-strip span{padding:7px 11px;border-radius:999px;background:#f9fafb;border:1px solid var(--line);font-size:13px;color:#4b5563}
.cover-box{
    overflow:hidden;
    height:auto;
    display:flex;
    align-items:center;
    justify-content:center;
    padding:0;
}

.cover-box img{
    width:100%;
    height:auto;
    object-fit:contain;
    display:block;
}
.article-body{padding:26px 28px;margin-top:24px}
.article-body h2{font-size:28px;letter-spacing:-.04em;margin:0 0 12px}
.article-body h3{font-size:24px;letter-spacing:-.03em;margin:28px 0 10px}
.article-body p{margin:0 0 16px;font-size:18px;color:#344054}
.article-note{margin-top:26px;padding:16px 18px;border-radius:20px;background:#f8fafc;border:1px solid var(--line);color:#475467}
.article-related{margin-top:28px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.small-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:16px}
.small-card h4{margin:6px 0 8px;font-size:18px;line-height:1.25}
.small-card p{margin:0;color:var(--muted);font-size:15px}
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
.about-card,.contact-card,.promo-box{padding:24px}
.promo-box{margin-top:24px;background:linear-gradient(135deg,rgba(29,78,216,.08),rgba(15,118,110,.08))}
.site-footer{padding:34px 0 50px;color:#475467}
.site-footer__box{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;background:#fff;border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow);padding:24px}
.muted{color:var(--muted)}
.list-clean{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.badge{display:inline-flex;align-items:center;padding:7px 10px;border-radius:999px;background:#eef2ff;color:#1d4ed8;font-size:13px;font-weight:700}

@media (max-width:980px){
    .hero-card,.article-top,.about-grid,.site-footer__box{grid-template-columns:1fr}
    .topic-grid,.article-grid,.related-grid{grid-template-columns:1fr 1fr}
}

@media (max-width:680px){
    .topic-grid,.article-grid,.related-grid{grid-template-columns:1fr}
    .hero-main,.hero-side,.article-body,.about-card,.contact-card,.promo-box{padding:20px}
    .article-card__image{height:200px}
    h1{font-size:34px}
    .nav{display:none}
}