:root{
  --bg:#f7f8fb;--surface:#ffffff;--ink:#172033;--muted:#5f6b7a;--line:#e5e9f0;
  --brand:#5b46e8;--brand2:#1f9d83;--soft:#eeecff;--warn:#fff7db;
  --radius:18px;--shadow:0 14px 40px rgba(30,40,70,.08);
  --max:1180px;
}
*{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;background:var(--bg);color:var(--ink);line-height:1.7}
a{color:#4938c9;text-decoration-thickness:.08em;text-underline-offset:.18em} a:hover{color:#2d2391}
img{max-width:100%;height:auto}
.skip{position:absolute;left:-9999px;top:auto}.skip:focus{left:14px;top:14px;z-index:1000;background:#fff;padding:10px 14px;border-radius:8px}
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.header-inner{max-width:var(--max);margin:auto;padding:12px 20px;display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);text-decoration:none;white-space:nowrap}
.logo-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--brand2));display:grid;place-items:center;color:white;font-weight:900}
.nav{display:flex;gap:17px;align-items:center;margin-left:auto}.nav a{color:var(--ink);font-size:.93rem;text-decoration:none;font-weight:650}.nav a:hover{text-decoration:underline}
.header-cta,.button{display:inline-flex;align-items:center;justify-content:center;gap:7px;background:var(--brand);color:#fff!important;text-decoration:none!important;font-weight:800;border-radius:12px;padding:11px 16px;box-shadow:0 8px 18px rgba(91,70,232,.22)}
.header-cta:hover,.button:hover{background:#4938c9}.button.secondary{background:#fff;color:var(--ink)!important;border:1px solid var(--line);box-shadow:none}
.menu-btn{display:none;margin-left:auto;border:1px solid var(--line);background:#fff;border-radius:10px;padding:9px 11px}
.mobile-nav{display:none;padding:0 20px 14px}.mobile-nav.open{display:grid;gap:10px}.mobile-nav a{text-decoration:none;font-weight:700}
.hero{background:radial-gradient(circle at 85% 15%,#dff7ef 0,transparent 31%),radial-gradient(circle at 10% 20%,#ebe8ff 0,transparent 35%),#fff;border-bottom:1px solid var(--line)}
.hero-inner{max-width:var(--max);margin:auto;padding:72px 20px 56px;display:grid;grid-template-columns:1.25fr .75fr;gap:44px;align-items:center}
.eyebrow{font-size:.82rem;letter-spacing:.12em;text-transform:uppercase;font-weight:850;color:#4c3bd0}
h1{font-size:clamp(2.25rem,5vw,4.2rem);line-height:1.04;letter-spacing:-.045em;margin:.15em 0 .3em}h2{font-size:clamp(1.55rem,3vw,2.25rem);line-height:1.2;letter-spacing:-.025em;margin-top:1.7em}h3{font-size:1.18rem;line-height:1.3;margin-top:1.4em}
.lead{font-size:1.16rem;color:var(--muted);max-width:760px}.hero-card,.card,.cta-box,.sidebar-card,.notice{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.hero-card{padding:24px}.hero-card ul{padding-left:20px}
.container{max-width:var(--max);margin:auto;padding:42px 20px 72px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{padding:22px}.card h3{margin-top:0}.card p{color:var(--muted)}.card .kicker{font-size:.8rem;font-weight:800;color:#4c3bd0;text-transform:uppercase;letter-spacing:.08em}
.layout{display:grid;grid-template-columns:minmax(0,760px) 300px;gap:34px;align-items:start}
.article{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:clamp(22px,4vw,46px);box-shadow:var(--shadow)}
.article h1{font-size:clamp(2rem,4vw,3.25rem)}.article p,.article li{font-size:1.03rem}.article table{width:100%;border-collapse:collapse;margin:24px 0;font-size:.95rem}.article th,.article td{border:1px solid var(--line);padding:12px;text-align:left;vertical-align:top}.article th{background:#f4f5fa}
.breadcrumbs{font-size:.9rem;color:var(--muted);margin-bottom:18px}.breadcrumbs a{color:var(--muted)}
.meta{font-size:.88rem;color:var(--muted);margin-bottom:22px}.verdict{background:#f4f1ff;border-left:5px solid var(--brand);padding:18px 20px;border-radius:12px;margin:24px 0}
.notice{padding:14px 16px;background:var(--warn);box-shadow:none;font-size:.9rem}
.cta-box{padding:24px;margin:30px 0;background:linear-gradient(135deg,#f2f0ff,#ebfaf6)}.cta-box h3{margin:0 0 8px}.cta-box p{margin:.2em 0 1em}
.sidebar{position:sticky;top:88px;display:grid;gap:16px}.sidebar-card{padding:20px}.sidebar-card h3{margin:0 0 7px}.sidebar-card ul{margin:8px 0 0;padding-left:18px}.sidebar-card a{font-weight:650}
.related{border-top:1px solid var(--line);margin-top:34px;padding-top:24px}.related ul{columns:2;gap:28px}
.home-section{margin:52px 0}.section-head{max-width:760px;margin-bottom:22px}.section-head p{color:var(--muted)}
.pill{display:inline-block;background:var(--soft);color:#4434bd;border-radius:999px;padding:5px 10px;font-size:.79rem;font-weight:800;margin-right:5px}
.footer{background:#111827;color:#d3d8e3;padding:44px 20px 86px}.footer-inner{max-width:var(--max);margin:auto;display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:28px}.footer a{color:#fff}.footer small{color:#9ba5b4}
.mobile-sticky{display:none}
.proscons{display:grid;grid-template-columns:1fr 1fr;gap:16px}.proscons>div{border:1px solid var(--line);border-radius:14px;padding:18px}.proscons h3{margin-top:0}
.toc{background:#f8f9fc;border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin:24px 0}.toc strong{display:block;margin-bottom:6px}.toc a{display:block;margin:4px 0}
@media(max-width:900px){
  .nav,.header-cta{display:none}.menu-btn{display:block}.hero-inner,.layout,.footer-inner{grid-template-columns:1fr}.hero-inner{padding-top:48px}.sidebar{position:static}.grid{grid-template-columns:1fr 1fr}
  .mobile-sticky{display:flex;position:fixed;left:12px;right:12px;bottom:12px;z-index:120}.mobile-sticky a{width:100%;padding:13px 16px}
}
@media(max-width:620px){.grid{grid-template-columns:1fr}.related ul{columns:1}.proscons{grid-template-columns:1fr}.article{border-radius:14px}.hero-inner{padding-bottom:36px}}