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

:root {
    --color-text: #1a1a1a;
    --color-text-secondary: #666;
    --color-text-muted: #999;
    --color-border: #e5e5e5;
    --color-bg: #fff;
    --color-bg-subtle: #fafafa;
    --color-accent: #0066cc;
    --color-accent-hover: #0052a3;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Layout */
.layout { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar {
    width: 260px;
    border-right: 1px solid var(--color-border);
    background: var(--color-bg);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    padding: 24px 0;
}

.sidebar-header {
    padding: 0 24px 24px;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 16px;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 15px;
    color: var(--color-text);
}

.sidebar-logo:hover { text-decoration: none; }
.sidebar-logo svg { width: 24px; height: 24px; }

.sidebar-section { padding: 0 12px; margin-bottom: 24px; }

.sidebar-title {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-muted);
    padding: 8px 12px;
}

.sidebar-link {
    display: block;
    padding: 8px 12px;
    color: var(--color-text-secondary);
    font-size: 14px;
    border-radius: 6px;
    transition: all 0.15s;
}

.sidebar-link:hover {
    background: var(--color-bg-subtle);
    color: var(--color-text);
    text-decoration: none;
}

.sidebar-link.active {
    background: #f0f7ff;
    color: var(--color-accent);
    font-weight: 500;
}

/* Main */
.main {
    flex: 1;
    margin-left: 260px;
    min-height: 100vh;
}

/* Header */
.header {
    border-bottom: 1px solid var(--color-border);
    padding: 16px 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--color-bg);
    position: sticky;
    top: 0;
    z-index: 100;
}

.search {
    position: relative;
    width: 320px;
}

.search input {
    width: 100%;
    padding: 10px 16px 10px 40px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 14px;
    background: var(--color-bg-subtle);
    transition: all 0.15s;
}

.search input:focus {
    outline: none;
    border-color: var(--color-accent);
    background: var(--color-bg);
}

.search svg {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    color: var(--color-text-muted);
}

.search kbd {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 11px;
    color: var(--color-text-muted);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: inherit;
}

.header-link {
    font-size: 14px;
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.header-link:hover { color: var(--color-text); text-decoration: none; }
.header-link svg { width: 14px; height: 14px; }

/* Content */
.content {
    max-width: 720px;
    margin: 0 auto;
    padding: 48px;
}

/* Breadcrumb */
.breadcrumb {
    font-size: 13px;
    color: var(--color-text-muted);
    margin-bottom: 24px;
}

.breadcrumb a { color: var(--color-text-secondary); }
.breadcrumb span { margin: 0 8px; }

/* Article */
.article h1 {
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.article .lead {
    font-size: 17px;
    color: var(--color-text-secondary);
    margin-bottom: 32px;
}

.article h2 {
    font-size: 20px;
    font-weight: 600;
    margin-top: 48px;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--color-border);
}

.article h3 {
    font-size: 16px;
    font-weight: 600;
    margin-top: 32px;
    margin-bottom: 12px;
}

.article p {
    margin-bottom: 16px;
    color: var(--color-text-secondary);
}

.article ul, .article ol {
    margin-left: 20px;
    margin-bottom: 16px;
    color: var(--color-text-secondary);
}

.article li {
    margin-bottom: 8px;
}

.article strong {
    color: var(--color-text);
    font-weight: 500;
}

.article code {
    background: var(--color-bg-subtle);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 13px;
    font-family: 'SF Mono', Monaco, monospace;
    color: var(--color-text);
}

.article hr {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: 48px 0;
}

.article table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 14px;
}

.article th {
    text-align: left;
    padding: 12px 16px;
    background: var(--color-bg-subtle);
    border: 1px solid var(--color-border);
    font-weight: 500;
}

.article td {
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
}

/* Role Cards */
.role-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin: 32px 0;
}

.role-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-text);
    transition: all 0.15s;
}

.role-card:hover {
    border-color: #ccc;
    background: var(--color-bg-subtle);
    text-decoration: none;
}

.role-icon {
    width: 40px;
    height: 40px;
    background: var(--color-bg-subtle);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.role-icon svg {
    width: 20px;
    height: 20px;
    color: var(--color-text-secondary);
}

.role-title {
    font-weight: 500;
    font-size: 14px;
    margin-bottom: 2px;
}

.role-desc {
    font-size: 12px;
    color: var(--color-text-muted);
}

/* Next Steps */
.next-steps {
    background: var(--color-bg-subtle);
    border-radius: 8px;
    padding: 24px;
    margin-top: 48px;
}

.next-steps h3 {
    margin-top: 0;
    margin-bottom: 16px;
}

.next-steps ul {
    margin: 0;
    list-style: none;
    padding: 0;
}

.next-steps li {
    margin-bottom: 8px;
}

/* Callout */
.callout {
    background: #fffbeb;
    border: 1px solid #fef3c7;
    border-radius: 8px;
    padding: 16px 20px;
    margin: 24px 0;
    font-size: 14px;
}

.callout-info {
    background: #eff6ff;
    border-color: #dbeafe;
}

/* Responsive */
@media (max-width: 1024px) {
    .role-cards { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .sidebar { display: none; }
    .main { margin-left: 0; }
    .content { padding: 24px; }
    .header { padding: 16px 24px; }
    .search { width: 100%; }
    .article h1 { font-size: 24px; }
}