:root{--inv-bg:#fff;--inv-dark:#001629;--inv-blue:#0f2458;--inv-accent:#fca311;--inv-muted:#718596}
*{box-sizing:border-box}
html,body{margin:0;padding:0;min-height:100%;background:var(--inv-bg)}
body{color:var(--inv-dark);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}
.inv-global-top{width:100%;background:var(--inv-dark);border-bottom:1px solid rgba(252,163,17,.22)}
.inv-global-top-inner{width:min(1180px,calc(100% - 28px));min-height:64px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:18px}
.inv-global-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font-size:14px;font-weight:900;letter-spacing:.13em}
.inv-global-brand:before{content:"";width:8px;height:24px;border-radius:999px;background:var(--inv-accent)}
.inv-global-tools{display:flex;align-items:center;gap:14px}
.inv-global-back{color:#d6e0e8;text-decoration:none;font-size:13px;font-weight:700}
.inv-global-back:hover{color:#fff}
.inv-global-footer{width:min(1180px,calc(100% - 28px));margin:0 auto;padding:12px 0 34px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:var(--inv-muted);font-size:12px}
.inv-global-footer a{color:var(--inv-blue);text-decoration:none}

.inv-detail{max-width:1120px;margin:0 auto;padding:34px 16px 90px}
.inv-detail-crumbs{font-size:12px;color:#718596;margin:0 0 16px}
.inv-detail-crumbs a{color:#0f2458;text-decoration:none}
.inv-detail-hero{background:radial-gradient(circle at top right,rgba(252,163,17,.16),transparent 34%),linear-gradient(135deg,#001629 0%,#0f2458 100%);border-radius:30px;padding:clamp(28px,5vw,60px);color:#fff;box-shadow:0 20px 55px rgba(0,22,41,.24)}
.inv-detail-tag{display:inline-block;background:#fca311;color:#001629;padding:8px 13px;border-radius:999px;font-weight:900;font-size:12px;margin-bottom:16px}
.inv-detail h1{color:#fff;font-size:clamp(34px,5vw,62px);line-height:1.05;margin:0;letter-spacing:-1.1px;font-weight:900}
.inv-detail-answer{background:#fff;border:1px solid rgba(0,22,41,.10);border-radius:24px;padding:clamp(22px,4vw,44px);margin-top:24px;box-shadow:0 14px 40px rgba(0,22,41,.10)}
.inv-detail-answer p{font-size:18px;line-height:1.82;color:#0f2458;margin:0}
.inv-detail-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.inv-detail-actions a{background:#fca311;color:#001629;text-decoration:none;border-radius:999px;padding:11px 15px;font-weight:900}
.inv-related{margin-top:30px}
.inv-related h2{font-size:26px;color:#001629;margin:0 0 16px}
.inv-related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.inv-related-grid a{display:block;background:#001629;color:#fff;border-radius:16px;padding:15px;font-weight:800;text-decoration:none;line-height:1.35}
.inv-related-grid a:hover{background:#fca311;color:#001629}

@media(max-width:900px){
    .inv-detail{padding:22px 12px 82px}
    .inv-detail-hero{border-radius:22px;padding:26px 18px}
    .inv-detail h1{font-size:31px}
    .inv-related-grid{grid-template-columns:1fr}
    .inv-global-top-inner{min-height:58px}
}