:root{
  --red-950:#2b0508;--red-900:#4a070d;--red-800:#7f0d17;--red-700:#b11220;--red-600:#dc1f2f;
  --gold:#ffd166;--white:#ffffff;--ink:#1f1113;--muted:#6f4b4f;--card:#ffffff;--soft:#fff1f2;
  --line:#f3c4c8;--shadow:0 20px 45px rgba(43,5,8,.18);
}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:linear-gradient(180deg, var(--red-950), #000000 34%);color:var(--ink);line-height:1.75}
a{color:inherit;text-decoration:none}img{max-width:100%;height:auto}.container{width:min(1140px,92%);margin:auto}
.top-strip{background:linear-gradient(90deg,var(--gold),#ffe8a3);color:#4a070d;text-align:center;font-size:14px;padding:9px 16px}
.top-strip span{font-weight:800;background:#4a070d;color:#fff;padding:4px 9px;border-radius:999px;margin-right:8px}
.site-header{background:rgba(74,7,13,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.1);position:sticky;top:0;z-index:50}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;min-height:74px}.logo img{width:178px;display:block}
.main-nav{display:flex;gap:8px;align-items:center}.main-nav a{color:#fff;font-weight:700;font-size:14px;padding:10px 13px;border-radius:999px}
.main-nav a:hover,.main-nav a.active{background:rgba(255,209,102,.16);color:var(--gold)}
.menu-btn{display:none;border:0;background:var(--gold);color:var(--red-950);font-size:24px;border-radius:12px;padding:7px 12px;cursor:pointer}
.hero{padding:56px 0 34px;color:#fff}.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:34px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:10px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);border-radius:999px;padding:8px 14px;color:var(--gold);font-weight:800;font-size:14px}
.eyebrow img{width:28px;height:28px;border-radius:50%}h1{font-size:clamp(32px,5vw,58px);line-height:1.08;margin:18px 0;letter-spacing:-1.5px}
.hero p{font-size:18px;color:#ffe3e6;max-width:720px}.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin:26px 0 18px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 20px;border-radius:999px;font-weight:800;border:1px solid transparent;transition:.2s ease}
.btn-primary{background:linear-gradient(180deg,var(--gold),#f6b93b);color:#3a0509;box-shadow:0 12px 26px rgba(255,209,102,.25)}.btn-primary:hover{transform:translateY(-2px)}
.btn-ghost{color:#fff;border-color:rgba(255,255,255,.28);background:rgba(255,255,255,.08)}.btn-red{background:linear-gradient(180deg,var(--red-600),var(--red-800));color:#fff}
.trust-mini{display:flex;gap:10px;flex-wrap:wrap;color:#ffdfe2;font-size:13px}.trust-mini span{border:1px solid rgba(255,255,255,.16);border-radius:999px;padding:7px 10px;background:rgba(255,255,255,.07)}
.hero-media{background:radial-gradient(circle at 50% 10%,rgba(255,209,102,.25),rgba(255,255,255,.06));border:1px solid rgba(255,255,255,.16);padding:14px;border-radius:24px;box-shadow:var(--shadow)}
.hero-media img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:18px;display:block}
.content-layout{display:grid;grid-template-columns:290px 1fr;gap:26px;padding:30px 0 70px}.toc-card,.article-card{background:var(--card);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow)}
.toc-card{position:sticky;top:96px;align-self:start;padding:22px}.toc-card h2{font-size:20px;margin:0 0 12px;color:var(--red-800)}
.toc-card a{display:block;padding:10px 0;border-bottom:1px solid #ffe1e4;color:var(--muted);font-weight:700;font-size:14px}.toc-card a:hover{color:var(--red-700)}
.article-card{padding:30px}.article-card section{margin-bottom:42px;scroll-margin-top:110px}.article-card a:not(.btn){color:var(--red-700);font-weight:800;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.section-label{display:inline-block;margin:0 0 8px;color:var(--red-700);background:var(--soft);border:1px solid var(--line);border-radius:999px;padding:5px 11px;font-size:12px;font-weight:900;text-transform:uppercase;letter-spacing:.5px}
h2{font-size:clamp(25px,3vw,36px);line-height:1.2;margin:0 0 14px;color:var(--red-900)}h3{font-size:21px;color:var(--red-800);margin:22px 0 8px}
.notice,.warning-box,.quick-box,.cta-box{border-radius:16px;padding:18px;margin:20px 0}.notice{background:#fff8e6;border-left:5px solid var(--gold)}.warning-box{background:#fff1f2;border-left:5px solid var(--red-600)}
.quick-box{background:#fff;border:1px solid var(--line)}.cta-box{background:linear-gradient(135deg,var(--red-900),var(--red-700));color:#fff;border:1px solid rgba(255,255,255,.12)}.cta-box h3{color:var(--gold);margin-top:0}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:16px}.feature-box{background:linear-gradient(180deg,#fff,#fff5f6);border:1px solid var(--line);border-radius:18px;padding:18px}.feature-box h3{margin-top:0}
.step-list,.check-list{padding-left:0;list-style:none}.step-list li,.check-list li{background:#fff;border:1px solid #f6d2d5;border-radius:15px;padding:14px 16px;margin:10px 0}
.step-list li{counter-increment:step;position:relative;padding-left:58px}.step-list{counter-reset:step}.step-list li::before{content:counter(step);position:absolute;left:16px;top:14px;width:28px;height:28px;border-radius:50%;background:var(--red-700);color:#fff;display:grid;place-items:center;font-weight:900}
.check-list li::before{content:"✓";color:var(--red-700);font-weight:900;margin-right:8px}
details{border:1px solid var(--line);border-radius:16px;padding:14px 16px;margin:12px 0;background:#fff}summary{cursor:pointer;font-weight:900;color:var(--red-900)}details p{margin-bottom:0;color:var(--muted)}
.breadcrumb{font-size:14px;color:#ffe3e6;margin-bottom:14px}.breadcrumb a{color:var(--gold);font-weight:800}.page-hero{padding:44px 0 26px;color:#fff}.page-hero h1{max-width:900px}.page-hero p{color:#ffe3e6;max-width:760px;font-size:18px}
.related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.related-grid a{border:1px solid var(--line);border-radius:16px;padding:16px;font-weight:900;color:var(--red-800);background:#fff7f7;text-decoration:none!important}
.site-footer{background:var(--red-950);color:#ffe3e6;padding:34px 0}.footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}.site-footer img{width:160px}.footer-note{font-size:14px;color:#ffd0d5}.footer-links{display:flex;gap:12px;flex-wrap:wrap;margin-top:12px}.footer-links a{color:var(--gold);font-weight:800;font-size:14px}
@media (max-width:900px){.hero-grid,.content-layout,.footer-grid{grid-template-columns:1fr}.toc-card{position:static}.feature-grid,.related-grid{grid-template-columns:1fr}.main-nav{display:none;position:absolute;top:74px;left:0;right:0;flex-direction:column;background:var(--red-900);padding:12px;border-bottom:1px solid rgba(255,255,255,.12)}.main-nav.show{display:flex}.main-nav a{width:100%;text-align:center}.menu-btn{display:block}}