*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --navy:   #0C1A35;
    --navy2:  #142548;
    --accent: #C9A84C;
    --white:  #FFFFFF;
    --bg:     #F5F4F0;
    --text:   #111110;
    --mid:    #4B5563;
    --muted:  #9CA3AF;
    --border: #E5E7EB;
}

html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', system-ui, sans-serif;
    -webkit-font-smoothing: antialiased;
    background: var(--bg);
    color: var(--text);
}


/* ── ARTICLE HEADER ── */
.article-header {
    background: var(--navy);
    padding: 100px 64px 48px;
    color: #fff;
}
.article-breadcrumb {
    display: flex; align-items: center; gap: 6px;
    font-size: 12px; color: rgba(255,255,255,.4);
    margin-bottom: 20px;
}
.article-breadcrumb a { color: rgba(255,255,255,.4); text-decoration: none; transition: color .15s; }
.article-breadcrumb a:hover { color: rgba(255,255,255,.8); }
.article-breadcrumb span { color: rgba(255,255,255,.2); }
.article-meta {
    display: flex; align-items: center; gap: 12px;
    margin-bottom: 16px;
}
.article-cat {
    display: inline-block;
    background: var(--accent); color: var(--navy);
    font-size: 10px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
    padding: 4px 10px; border-radius: 4px;
}
.article-date { font-size: 12px; color: rgba(255,255,255,.35); }
.article-header h1 {
    font-size: clamp(24px, 4vw, 40px); font-weight: 800; letter-spacing: -.03em;
    line-height: 1.15; color: #fff; max-width: 800px; margin-bottom: 16px;
}
.article-lead {
    font-size: 17px; color: rgba(255,255,255,.6);
    max-width: 700px; line-height: 1.6;
}

/* ── ARTICLE LAYOUT ── */
.article-layout {
    max-width: 1200px; margin: 0 auto;
    display: grid; grid-template-columns: 1fr 300px; gap: 48px;
    padding: 56px 64px 80px; align-items: start;
}

/* ── ARTICLE CONTENT ── */
.article-content {
    min-width: 0;
    background: var(--white);
    border: 1px solid var(--border);
    padding: 48px;
    line-height: 1.75;
    font-size: 15px;
    color: var(--text);
}
.article-content h2 {
    font-size: 22px; font-weight: 800; letter-spacing: -.02em;
    color: var(--text); margin: 36px 0 12px; line-height: 1.2;
}
.article-content h2:first-child { margin-top: 0; }
.article-content h3 {
    font-size: 16px; font-weight: 700; letter-spacing: -.01em;
    color: var(--text); margin: 24px 0 8px;
}
.article-content p { margin-bottom: 16px; color: var(--mid); }
.article-content ul, .article-content ol {
    margin: 0 0 16px 0; padding-left: 20px;
}
.article-content li { margin-bottom: 6px; color: var(--mid); }
.article-content strong { color: var(--text); font-weight: 600; }
.article-content em { font-style: italic; }
.article-content a { color: var(--navy); text-decoration: underline; }
.article-content a:hover { color: var(--accent); }
.article-content table {
    width: 100%; border-collapse: collapse;
    margin: 24px 0; font-size: 13px;
}
.article-content th {
    background: var(--navy); color: #fff;
    font-size: 11px; font-weight: 700; letter-spacing: .05em; text-transform: uppercase;
    padding: 10px 14px; text-align: left;
}
.article-content td {
    padding: 10px 14px; border-bottom: 1px solid var(--border);
    color: var(--mid); vertical-align: top;
}
.article-content tr:last-child td { border-bottom: none; }
.article-content tr:nth-child(even) td { background: var(--bg); }

/* ── SIDEBAR ── */
.article-sidebar { position: sticky; top: 80px; }
.sidebar-section {
    background: var(--white);
    border: 1px solid var(--border);
    padding: 24px; margin-bottom: 20px;
}
.sidebar-section-title {
    font-size: 10px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
    color: var(--muted); margin-bottom: 16px;
}
.sidebar-guide-link {
    display: flex; align-items: flex-start; gap: 10px;
    text-decoration: none; color: var(--text);
    padding: 10px 0; border-bottom: 1px solid var(--border);
    transition: color .15s;
}
.sidebar-guide-link:last-child { border-bottom: none; padding-bottom: 0; }
.sidebar-guide-link:hover { color: var(--navy); }
.sidebar-guide-icon { font-size: 16px; flex-shrink: 0; margin-top: 1px; }
.sidebar-guide-text strong { display: block; font-size: 13px; font-weight: 600; margin-bottom: 2px; }
.sidebar-guide-text span { font-size: 11px; color: var(--muted); line-height: 1.4; }
.sidebar-cta {
    background: var(--navy);
    padding: 24px; text-align: center;
}
.sidebar-cta-title { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.sidebar-cta-sub { font-size: 12px; color: rgba(255,255,255,.5); margin-bottom: 16px; line-height: 1.4; }
.sidebar-cta-btn {
    display: inline-block;
    background: var(--accent); color: var(--navy);
    font-size: 11px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase;
    padding: 10px 20px; text-decoration: none;
    transition: background .15s;
}
.sidebar-cta-btn:hover { background: #e8c56a; }


@media (max-width: 1024px) {
    .article-layout { grid-template-columns: 1fr; padding: 40px 32px 60px; }
    .article-sidebar { position: static; }
}
@media (max-width: 768px) {
    .article-header { padding: 88px 20px 36px; }
    .article-layout { padding: 32px 16px 48px; gap: 24px; }
    .article-content { padding: 28px 20px; }
}