:root {
    --bg: #0b1220;
    --panel: #0f1629;
    --card: #111a30;
    --accent: #f97316;
    --text: #e6ecf5;
    --muted: #9fb2ce;
    --border: #1e2a42;
    --shadow: 0 15px 45px rgba(0, 0, 0, 0.25);
    --radius: 14px;
    --font: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
}

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

body {
    margin: 0;
    font-family: var(--font);
    line-height: 1.7;
    color: var(--text);
    background: radial-gradient(circle at 18% 18%, rgba(249, 115, 22, 0.08), transparent 32%),
                radial-gradient(circle at 82% 12%, rgba(71, 168, 255, 0.12), transparent 30%),
                var(--bg);
    min-height: 100vh;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.15s ease, opacity 0.15s ease;
}

a:hover {
    color: #ff8f3d;
}

a:focus-visible,
button:focus-visible,
.btn:focus-visible,
.pill:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-color: var(--accent);
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 8px;
    background: #fff;
    color: #0b1220;
    padding: 0.6rem 1rem;
    border-radius: 999px;
    z-index: 100;
    font-weight: 700;
}

.skip-link:focus-visible {
    left: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 2.25rem 1.5rem 3rem;
}

.hero {
    background: linear-gradient(135deg, rgba(249, 115, 22, 0.12), rgba(17, 26, 48, 0.6));
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem 1.75rem 2rem;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.hero-text h1 {
    margin: 0 0 0.75rem;
    font-size: clamp(2rem, 4vw, 2.6rem);
    letter-spacing: -0.01em;
    color: #fff;
}

.hero .lede {
    margin: 0 0 1.1rem;
    color: var(--muted);
    font-size: 1.05rem;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.7rem;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border);
    border-radius: 999px;
    color: var(--accent);
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    font-size: 0.85rem;
    margin-bottom: 0.6rem;
}

.hero-actions {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1.1rem;
    border-radius: 999px;
    font-weight: 700;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.btn.primary {
    background: var(--accent);
    color: #0b1220;
    box-shadow: 0 12px 30px rgba(249, 115, 22, 0.35);
}

.btn.primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 14px 36px rgba(249, 115, 22, 0.45);
}

.btn.ghost {
    border-color: var(--border);
    color: var(--text);
    background: rgba(255, 255, 255, 0.04);
}

.btn.ghost:hover {
    border-color: rgba(249, 115, 22, 0.35);
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(11, 18, 32, 0.9);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(6px);
}

.site-header .container {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    padding-top: 1.5rem;
    padding-bottom: 1.25rem;
}

.brand-wrap {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.logo-link {
    display: inline-flex;
    align-items: center;
}

.brand-text {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.brand a {
    display: inline-flex;
    align-items: center;
    color: var(--text);
    font-size: 1.25rem;
    font-weight: 700;
    text-decoration: none;
}

.brand-term {
    letter-spacing: 0.12em;
}

.brand-sep {
    margin: 0 0.4rem;
    opacity: 0.7;
}

.brand-def {
    font-weight: 600;
    text-transform: none;
    letter-spacing: 0.02em;
    color: var(--muted);
}

.site-header p {
    margin: 0;
    color: var(--muted);
}

.logo-icon {
    width: 75px;
    height: 75px;
    border-radius: 16px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.35);
}

.tagline {
    max-width: 52ch;
}

.site-header nav {
    display: flex;
    gap: 1rem;
    font-weight: 600;
}

.site-header nav a {
    color: var(--muted);
    padding-bottom: 4px;
    border-bottom: 2px solid transparent;
}

.site-header nav a:hover {
    color: var(--text);
    border-color: var(--accent);
}

/* Hero on homepage */
.page-title {
    margin: 0 0 1.25rem;
    font-size: 2rem;
    letter-spacing: -0.01em;
}

.categories {
    margin-bottom: 1.5rem;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem 1.25rem;
    box-shadow: var(--shadow);
}

.section-title {
    margin: 0 0 0.75rem;
    font-size: 1.2rem;
    color: var(--text);
}

.category-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0;
    margin: 0;
    list-style: none;
}

.post-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
    gap: 1.5rem;
    margin-top: 0.75rem;
    margin-bottom: 1.75rem;
}

.post-card {
    background: linear-gradient(135deg, rgba(249, 115, 22, 0.1), rgba(17, 26, 48, 0.8));
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.35rem;
    box-shadow: var(--shadow);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.post-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
    border-color: rgba(249, 115, 22, 0.35);
}

.post-card h3 {
    margin: 0 0 0.35rem;
    font-size: 1.2rem;
    color: #fff;
}

.meta {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    font-size: 0.95rem;
    color: var(--muted);
    margin: 0 0 0.75rem;
}

.meta span {
    position: relative;
    padding-right: 0.8rem;
}

.meta span + span::before {
    content: "";
    position: absolute;
    left: -0.35rem;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 14px;
    background: rgba(255, 255, 255, 0.2);
}

.post-card p {
    margin: 0 0 0.75rem;
    color: var(--muted);
}

.post-card a {
    font-weight: 600;
}

/* Post page */
.post {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.75rem;
    margin-top: 1.5rem;
}

.post h2 {
    margin-top: 0;
    margin-bottom: 0.5rem;
}

.post .content p {
    margin-bottom: 1rem;
    color: var(--text);
}

.post .content .sop-step {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 0.85rem 1rem;
    margin: 0 0 1rem;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.03);
}

.post .content .sop-step p {
    margin: 0;
}

.post .content .sop-marker {
    flex: 0 0 auto;
    width: 75px;
    height: 75px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    color: var(--accent);
    background: rgba(249, 115, 22, 0.12);
    border: 1px solid rgba(249, 115, 22, 0.35);
}

.post .content .sop-marker svg {
    width: 48px;
    height: 48px;
}

.post .content ul {
    padding-left: 1.1rem;
    margin: 0 0 1rem;
}

.post .content li {
    margin-bottom: 0.35rem;
    color: var(--muted);
}

/* Footer */
.site-footer {
    background: rgba(11, 18, 32, 0.95);
    border-top: 1px solid var(--border);
    color: var(--muted);
    text-align: center;
    padding: 1.5rem 1.5rem 2rem;
}

/* Utilities */
.pill {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.7rem;
    background: rgba(249, 115, 22, 0.12);
    color: var(--accent);
    border-radius: 999px;
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: 0.02em;
    border: 1px solid transparent;
}

.pill.active {
    background: rgba(249, 115, 22, 0.2);
    border-color: rgba(249, 115, 22, 0.4);
    color: #ffd7b0;
}

code {
    background: rgba(255, 255, 255, 0.06);
    padding: 2px 6px;
    border-radius: 6px;
    border: 1px solid var(--border);
}

.pagination {
    display: flex;
    justify-content: center;
}

.pagination-inner {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.55rem 1rem;
    box-shadow: var(--shadow);
}

.page-link {
    color: var(--text);
    font-weight: 600;
}

.page-link.disabled {
    color: var(--muted);
    cursor: not-allowed;
}

.page-status {
    color: var(--muted);
    font-size: 0.95rem;
}

@media (max-width: 640px) {
    .site-header .container {
        padding-top: 1.2rem;
        padding-bottom: 1.2rem;
    }

    .post-list {
        grid-template-columns: 1fr;
    }

    .pagination-inner {
        width: 100%;
        justify-content: space-between;
    }

    .hero {
        padding: 1.5rem 1.35rem 1.65rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: flex-start;
    }
}