*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
:root { --black: #0a0a0a; --off-black: #111111; --charcoal: #1c1c1c; --border: #2a2a2a; --gold: #c9a96e; --gold-light: #e8c98a; --white: #f5f2ee; --white-dim: #d4cfc8; --muted: #7a7672; --font-display: 'Cormorant Garamond', serif; --font-body: 'DM Sans', sans-serif; }
html { scroll-behavior: smooth; }
body { background: var(--black); color: var(--white); font-family: var(--font-body); font-weight: 300; line-height: 1.7; overflow-x: hidden; }
nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; display: flex; align-items: center; justify-content: space-between; padding: 1.5rem 4rem; background: rgba(10,10,10,0.92); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(201,169,110,0.12); }
.nav-logo { font-family: var(--font-display); font-size: 1.2rem; font-weight: 500; letter-spacing: 0.08em; color: var(--white); text-decoration: none; }
.nav-logo span { color: var(--gold); }
.nav-links { display: flex; gap: 2.5rem; list-style: none; }
.nav-links a { font-size: 0.8rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--white-dim); text-decoration: none; transition: color 0.3s; }
.nav-links a:hover { color: var(--gold); }
.nav-cta { font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--gold); text-decoration: none; border: 1px solid var(--gold); padding: 0.6rem 1.4rem; transition: all 0.3s; }
.nav-cta:hover { background: var(--gold); color: var(--black); }
.breadcrumb { padding: 7rem 4rem 0; display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; }
.breadcrumb a { font-size: 0.75rem; color: var(--muted); text-decoration: none; transition: color 0.3s; }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb span { font-size: 0.75rem; color: var(--border); }
.breadcrumb-current { font-size: 0.75rem; color: var(--gold); }
.article-wrap { display: grid; grid-template-columns: 1fr 300px; gap: 5rem; padding: 3rem 4rem 6rem; max-width: 1200px; margin: 0 auto; }
.article-header { margin-bottom: 3rem; padding-bottom: 2.5rem; border-bottom: 1px solid var(--border); }
.article-tag { font-size: 0.68rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--gold); margin-bottom: 1.2rem; display: flex; align-items: center; gap: 0.8rem; }
.article-tag::before { content: ''; width: 24px; height: 1px; background: var(--gold); }
h1 { font-family: var(--font-display); font-size: clamp(2rem, 3.5vw, 3.2rem); font-weight: 300; line-height: 1.1; color: var(--white); margin-bottom: 1.2rem; }
.article-meta { display: flex; gap: 2rem; flex-wrap: wrap; }
.article-meta-item { font-size: 0.75rem; letter-spacing: 0.08em; color: var(--muted); }
.article-meta-item strong { color: var(--white-dim); font-weight: 400; }
.article-body { font-size: 0.97rem; color: var(--white-dim); line-height: 1.9; }
.article-body h2 { font-family: var(--font-display); font-size: 1.8rem; font-weight: 300; color: var(--white); margin: 3rem 0 1rem; padding-top: 2rem; border-top: 1px solid var(--border); }
.article-body h2:first-of-type { border-top: none; padding-top: 0; margin-top: 2rem; }
.article-body h3 { font-family: var(--font-display); font-size: 1.3rem; font-weight: 400; color: var(--white); margin: 2rem 0 0.8rem; }
.article-body p { margin-bottom: 1.3rem; }
.article-body strong { color: var(--white); font-weight: 500; }
.article-body em { color: var(--gold); font-style: italic; }
.article-body ul, .article-body ol { padding-left: 1.5rem; margin-bottom: 1.3rem; display: flex; flex-direction: column; gap: 0.5rem; }
.article-body li { color: var(--white-dim); font-size: 0.95rem; }
.article-body a { color: var(--gold); text-decoration: none; border-bottom: 1px solid rgba(201,169,110,0.3); transition: border-color 0.3s; }
.article-body a:hover { border-color: var(--gold); }
.highlight-box { background: var(--charcoal); border-left: 2px solid var(--gold); padding: 1.5rem 2rem; margin: 2rem 0; }
.highlight-box p { margin-bottom: 0; color: var(--white); font-size: 0.95rem; }
.warning-box { background: rgba(239,83,80,0.04); border-left: 2px solid #ef5350; padding: 1.5rem 2rem; margin: 2rem 0; }
.warning-box p { margin-bottom: 0; color: var(--white-dim); font-size: 0.95rem; }
.warning-box strong { color: #ef5350; }
.data-table { width: 100%; border-collapse: collapse; margin: 2rem 0; font-size: 0.85rem; }
.data-table th { background: var(--charcoal); color: var(--gold); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; padding: 0.9rem 1.2rem; text-align: left; font-weight: 500; border-bottom: 1px solid var(--border); }
.data-table td { padding: 0.9rem 1.2rem; border-bottom: 1px solid var(--border); color: var(--white-dim); }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--off-black); }
.step-card { background: var(--off-black); border: 1px solid var(--border); border-left: 2px solid var(--gold); padding: 1.8rem 2rem; margin: 1.5rem 0; }
.step-num { font-size: 0.7rem; letter-spacing: 0.2em; color: var(--gold); margin-bottom: 0.5rem; text-transform: uppercase; }
.step-card h3 { margin-top: 0 !important; margin-bottom: 0.6rem !important; }
.step-card p:last-child { margin-bottom: 0; }
.article-cta { background: var(--charcoal); border: 1px solid rgba(201,169,110,0.2); padding: 2.5rem; margin: 3rem 0; }
.article-cta-title { font-family: var(--font-display); font-size: 1.5rem; color: var(--white); margin-bottom: 0.5rem; }
.article-cta-desc { font-size: 0.85rem; color: var(--muted); margin-bottom: 1.5rem; line-height: 1.7; }
.article-cta-buttons { display: flex; gap: 1rem; flex-wrap: wrap; }
.btn-primary { display: inline-flex; align-items: center; gap: 0.6rem; background: var(--gold); color: var(--black); font-family: var(--font-body); font-size: 0.78rem; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; text-decoration: none; padding: 0.9rem 1.8rem; transition: all 0.3s; border-bottom: none; }
.btn-primary:hover { background: var(--gold-light); border-bottom: none; }
.btn-secondary { display: inline-flex; align-items: center; gap: 0.6rem; color: var(--white-dim); font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase; text-decoration: none; padding: 0.9rem 1.8rem; border: 1px solid var(--border); transition: all 0.3s; }
.btn-secondary:hover { border-color: var(--gold); color: var(--gold); }
.article-author { display: flex; gap: 1.5rem; align-items: flex-start; padding: 2rem; background: var(--off-black); border: 1px solid var(--border); margin-top: 3rem; }
.author-avatar { width: 64px; height: 64px; border-radius: 50%; background: var(--charcoal); border: 1px solid var(--border); flex-shrink: 0; display: flex; align-items: center; justify-content: center; font-family: var(--font-display); font-size: 1.5rem; color: var(--gold); }
.author-name { font-family: var(--font-display); font-size: 1.1rem; color: var(--white); margin-bottom: 0.2rem; }
.author-title { font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--gold); margin-bottom: 0.6rem; }
.author-bio { font-size: 0.82rem; color: var(--muted); line-height: 1.6; }
.sidebar { position: sticky; top: 6rem; height: fit-content; display: flex; flex-direction: column; gap: 2rem; }
.sidebar-box { background: var(--off-black); border: 1px solid var(--border); padding: 2rem; }
.sidebar-title { font-family: var(--font-display); font-size: 1.1rem; color: var(--white); margin-bottom: 1.2rem; padding-bottom: 0.8rem; border-bottom: 1px solid var(--border); }
.sidebar-cta-desc { font-size: 0.82rem; color: var(--muted); line-height: 1.6; margin-bottom: 1.5rem; }
.sidebar-toc { list-style: none; display: flex; flex-direction: column; gap: 0.6rem; }
.sidebar-toc li a { font-size: 0.8rem; color: var(--muted); text-decoration: none; display: flex; gap: 0.6rem; align-items: flex-start; transition: color 0.3s; line-height: 1.4; border-bottom: none; }
.sidebar-toc li a:hover { color: var(--gold); }
.sidebar-toc li a::before { content: '→'; color: var(--gold); flex-shrink: 0; font-size: 0.75rem; margin-top: 0.1rem; }
.sidebar-related { list-style: none; display: flex; flex-direction: column; gap: 0.8rem; }
.sidebar-related li a { font-size: 0.82rem; color: var(--white-dim); text-decoration: none; display: block; line-height: 1.5; border-bottom: none; transition: color 0.3s; }
.sidebar-related li a:hover { color: var(--gold); }
.sidebar-related li a span { display: block; font-size: 0.7rem; color: var(--muted); margin-top: 0.1rem; }
footer { padding: 3rem 4rem; border-top: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1.5rem; }
.footer-logo { font-family: var(--font-display); font-size: 1rem; font-weight: 500; color: var(--muted); }
.footer-logo span { color: var(--gold); }
.footer-copy { font-size: 0.72rem; color: var(--muted); }
.footer-links { display: flex; gap: 2rem; list-style: none; flex-wrap: wrap; }
.footer-links a { font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); text-decoration: none; transition: color 0.3s; }
.footer-links a:hover { color: var(--gold); }
.wa-float { position: fixed; bottom: 2rem; right: 2rem; z-index: 999; width: 56px; height: 56px; background: #25D366; border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 20px rgba(37,211,102,0.4); transition: transform 0.3s; text-decoration: none; }
.wa-float:hover { transform: scale(1.1); }
.wa-float svg { width: 28px; height: 28px; fill: #fff; }
@media (max-width: 900px) {
  nav { padding: 1.2rem 1.5rem; } .nav-links { display: none; }
  .breadcrumb { padding: 6rem 1.5rem 0; }
  .article-wrap { grid-template-columns: 1fr; gap: 3rem; padding: 2rem 1.5rem 4rem; }
  .sidebar { position: static; }
  footer { flex-direction: column; gap: 1.5rem; text-align: center; padding: 2rem 1.5rem; }
}