:root {
    --bg-white: #FFFFFF;
    --bg-light: #F4F4F4;
    --bg-black: #0A0A0A;
    --accent-gold: #F7C212;
    --border-dark: #111111;
    --border-light: #E5E5E5;
    --text-black: #000000;
    --text-gray: #555555;
    --text-white: #FFFFFF;
    --font-main: 'Inter', -apple-system, "PingFang SC", sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --container-width: 1200px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    background-color: var(--bg-white);
    color: var(--text-black);
    font-family: var(--font-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-light); border-left: 1px solid var(--border-light); }
::-webkit-scrollbar-thumb { background: var(--border-dark); }
::-webkit-scrollbar-thumb:hover { background: var(--accent-gold); }

.blog-header {
    position: fixed; top: 0; width: 100%; z-index: 100;
    background: rgba(255, 255, 255, 0.97);
    border-bottom: 2px solid var(--border-dark);
    backdrop-filter: blur(8px);
}
.blog-header-inner {
    display: flex; justify-content: space-between; align-items: center;
    height: 72px; max-width: 1400px; margin: 0 auto; padding: 0 40px;
}
.blog-logo {
    font-family: var(--font-mono); font-size: 1.4rem; font-weight: 900;
    color: var(--text-black); text-decoration: none;
    display: flex; align-items: center; gap: 10px; letter-spacing: -0.05em;
}
.blog-logo-img { width: 30px; height: 30px; display: block; flex-shrink: 0; }
.blog-header-nav { display: flex; align-items: center; gap: 24px; }
.blog-list-link {
    font-family: var(--font-mono); font-size: 0.85rem; font-weight: 900;
    color: var(--text-gray); text-decoration: none; text-transform: uppercase;
    transition: color 0.2s;
}
.blog-list-link:hover { color: var(--text-black); }
.blog-back-btn {
    font-family: var(--font-mono); font-size: 0.85rem; font-weight: 900;
    color: var(--text-black); text-decoration: none; text-transform: uppercase;
    border: 2px solid var(--border-dark); padding: 8px 20px;
    transition: background 0.2s, color 0.2s;
}
.blog-back-btn:hover { background: var(--text-black); color: var(--bg-white); }

.read-progress-bar {
    position: fixed; top: 72px; left: 0; height: 3px; width: 0%;
    background: var(--accent-gold); z-index: 101; transition: width 0.1s linear;
}

.article-layout {
    display: grid; grid-template-columns: 340px 1fr; gap: 64px;
    max-width: 1400px; margin: 0 auto; padding: 0 40px;
    padding-top: 120px; align-items: start;
}

.article-sidebar { position: sticky; top: 100px; display: flex; flex-direction: column; gap: 40px; }

.breadcrumbs {
    font-family: var(--font-mono); font-size: 0.78rem; font-weight: 800;
    color: var(--text-gray); display: flex; flex-wrap: wrap; gap: 6px; line-height: 1.8;
}
.breadcrumbs a { color: var(--text-black); text-decoration: none; border-bottom: 1px solid var(--text-black); transition: 0.2s; }
.breadcrumbs a:hover { color: var(--accent-gold); border-color: var(--accent-gold); }
.breadcrumbs .sep { color: var(--border-light); }
.breadcrumbs .current { color: var(--text-gray); }

.author-meta {
    border: 2px solid var(--border-dark); padding: 24px;
    background: var(--bg-light); display: flex; flex-direction: column; gap: 14px;
}
.author-avatar {
    width: 56px; height: 56px; background: var(--text-black); color: var(--accent-gold);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; font-weight: 900; font-family: var(--font-mono);
    border: 2px solid var(--border-dark);
}
.author-name { font-weight: 900; font-size: 1.1rem; text-transform: uppercase; line-height: 1.2; }
.author-role { font-family: var(--font-mono); font-size: 0.82rem; color: var(--text-gray); font-weight: 700; }
.post-date {
    font-family: var(--font-mono); font-size: 0.82rem; font-weight: 800;
    color: var(--text-black); background: var(--accent-gold); padding: 3px 10px; align-self: flex-start;
}
.post-read-time {
    font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-gray); font-weight: 700;
}

.toc-box { border-left: 4px solid var(--border-dark); padding-left: 18px; }
.toc-title { font-family: var(--font-mono); font-size: 0.85rem; font-weight: 900; text-transform: uppercase; margin-bottom: 14px; color: var(--text-gray); }
.toc-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.toc-list a {
    font-size: 0.9rem; font-weight: 700; color: var(--text-black); text-decoration: none;
    transition: 0.2s; border-left: 2px solid transparent; padding-left: 10px; margin-left: -12px;
    line-height: 1.4; display: block;
}
.toc-list a:hover { color: var(--accent-gold); }
.toc-list a.active { color: var(--accent-gold); border-left-color: var(--accent-gold); }

.article-main { max-width: 880px; padding-bottom: 120px; line-height: 1.8; }
.article-title {
    font-size: 3.2rem; font-weight: 900; text-transform: uppercase; line-height: 1.1;
    letter-spacing: -0.03em; margin-bottom: 48px;
    border-bottom: 4px solid var(--text-black); padding-bottom: 32px;
}
.article-content { font-size: 1.1rem; color: #222; }
.article-content p { margin-bottom: 28px; font-weight: 500; text-align: justify; }
.article-content strong { font-weight: 900; color: var(--text-black); }

.article-content h2 {
    margin: 80px 0 28px;
    display: flex; flex-direction: column; gap: 10px;
}
.section-tag {
    font-family: var(--font-mono); font-size: 0.78rem; font-weight: 900;
    text-transform: uppercase; letter-spacing: 0.08em;
    background: var(--text-black); color: var(--accent-gold);
    padding: 4px 10px; display: inline-block; align-self: flex-start;
}
.section-label {
    font-size: 2rem; font-weight: 900; text-transform: uppercase;
    letter-spacing: -0.02em; color: var(--text-black); line-height: 1.15;
}

.article-content h3 { font-size: 1.4rem; font-weight: 800; margin: 40px 0 20px; color: var(--text-black); }

.article-content blockquote {
    margin: 40px 0; padding: 28px 36px; border: 2px solid var(--border-dark);
    background: var(--bg-light); border-left: 10px solid var(--accent-gold);
    font-size: 1.15rem; font-weight: 700; color: var(--text-black); line-height: 1.8;
}
.article-content blockquote p { margin-bottom: 0; }

.article-content ul { margin-bottom: 28px; padding-left: 24px; }
.article-content ul li { margin-bottom: 14px; font-weight: 600; line-height: 1.8; list-style-type: square; color: var(--text-gray); }
.article-content ul li strong { color: var(--text-black); }

.article-content ol { margin-bottom: 28px; padding-left: 24px; }
.article-content ol li { margin-bottom: 14px; font-weight: 600; line-height: 1.8; color: var(--text-gray); }
.article-content ol li strong { color: var(--text-black); }

.article-table-wrap {
    margin: 0 0 28px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border: 2px solid var(--border-dark);
    background: var(--bg-white);
    box-shadow: 6px 6px 0 var(--border-light);
}
.article-content table.article-matrix {
    width: 100%;
    min-width: 560px;
    border-collapse: collapse;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-gray);
}
.article-matrix-caption {
    caption-side: top;
    text-align: left;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-gray);
    padding: 12px 14px 10px;
    border-bottom: 1px solid var(--border-light);
    background: var(--bg-light);
}
.article-content table.article-matrix th,
.article-content table.article-matrix td {
    border: 1px solid var(--border-dark);
    padding: 12px 14px;
    vertical-align: top;
    line-height: 1.55;
    text-align: left;
}
.article-content table.article-matrix thead th {
    background: var(--text-black);
    color: var(--bg-white);
    font-weight: 900;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}
.article-content table.article-matrix tbody th[scope="row"] {
    background: var(--bg-light);
    color: var(--text-black);
    font-weight: 900;
    white-space: nowrap;
    font-size: 0.88rem;
}
.article-content table.article-matrix tbody tr:nth-child(even) td {
    background: rgba(244, 244, 244, 0.55);
}

.article-content code {
    font-family: var(--font-mono); font-size: 0.88em; font-weight: 800;
    background: var(--bg-light); padding: 2px 7px; color: var(--text-black);
    border: 1px solid var(--border-dark);
}

.terminal-block {
    margin: 40px 0; border: 2px solid var(--border-dark);
    box-shadow: 10px 10px 0 var(--border-light); background: var(--bg-black); color: var(--bg-white); overflow: hidden;
}
.terminal-block .term-header {
    background: #1a1a1a; padding: 10px 16px; font-size: 0.82rem; font-weight: 800;
    color: #666; border-bottom: 1px solid #333; text-transform: uppercase;
    font-family: var(--font-mono); display: flex; align-items: center; gap: 8px;
}
.term-dot { width: 10px; height: 10px; background: #444; flex-shrink: 0; }
.term-filename { margin-left: auto; color: #555; }
.terminal-block pre {
    margin: 0; padding: 28px 32px; overflow-x: auto; white-space: pre-wrap;
    word-wrap: break-word; font-family: var(--font-mono); font-size: 0.9rem; line-height: 1.9;
}
.terminal-block pre code { background: transparent; padding: 0; border: none; color: inherit; display: block; }
.hl { color: var(--accent-gold); font-weight: 900; }
.err { color: #FF4444; font-weight: 900; }
.ok { color: #00FFA3; font-weight: 900; }
.dim { color: #666; }

.article-cta {
    background-color: var(--accent-gold); border: 2px solid var(--border-dark);
    padding: 72px 56px; text-align: center; margin: 72px 0; box-shadow: 14px 14px 0 var(--border-dark);
}
.article-cta h3 { font-size: 3rem; font-weight: 900; text-transform: uppercase; margin-bottom: 20px; color: var(--text-black); line-height: 1.1; letter-spacing: -0.04em; }
.article-cta p { font-size: 1.15rem; font-weight: 700; color: var(--text-black); margin-bottom: 40px; }
.article-cta .btn {
    display: inline-flex; padding: 20px 56px; background: var(--text-black); color: var(--bg-white);
    font-family: var(--font-mono); font-size: 1.1rem; font-weight: 900; text-transform: uppercase;
    text-decoration: none; border: 2px solid var(--text-black); transition: 0.2s;
}
.article-cta .btn:hover { background: var(--bg-white); color: var(--text-black); }

.floating-cta {
    position: fixed; bottom: 40px; right: 40px; z-index: 99;
    background: var(--text-black); color: var(--bg-white);
    border: 2px solid var(--border-dark); padding: 28px 22px;
    box-shadow: 8px 8px 0 var(--accent-gold); display: flex; flex-direction: column; gap: 14px; width: 300px;
    transition: transform 0.3s;
}
.floating-cta:hover { transform: translateY(-6px); }
.floating-cta .fc-label { font-family: var(--font-mono); font-size: 0.8rem; font-weight: 900; color: var(--accent-gold); text-transform: uppercase; border-bottom: 1px solid #333; padding-bottom: 10px; margin-bottom: 4px; }
.floating-cta .fc-desc { font-size: 0.95rem; font-weight: 700; line-height: 1.4; }
.floating-cta .fc-btn {
    background: var(--accent-gold); color: var(--text-black); text-align: center;
    padding: 14px; font-family: var(--font-mono); font-weight: 900; text-decoration: none;
    text-transform: uppercase; margin-top: 4px; transition: 0.2s; border: 2px solid transparent;
}
.floating-cta .fc-btn:hover { background: var(--bg-white); border-color: var(--text-black); }

.blog-list-container { max-width: var(--container-width); margin: 0 auto; padding: 0 40px; }

.bg-blueprint {
    background-color: var(--bg-white);
    background-image: linear-gradient(var(--border-light) 1px, transparent 1px), linear-gradient(90deg, var(--border-light) 1px, transparent 1px);
    background-size: 40px 40px;
    border-bottom: 2px solid var(--border-dark);
}
.tech-eyebrow {
    font-family: var(--font-mono); font-size: 0.85rem; font-weight: 800; text-transform: uppercase;
    letter-spacing: 0.05em; margin-bottom: 24px; display: inline-flex; align-items: center;
    padding: 4px 12px; background: var(--text-black); color: var(--accent-gold);
}
.page-header { padding: 160px 0 80px; text-align: left; }
.page-title { font-size: 4.5rem; font-weight: 900; text-transform: uppercase; line-height: 1; letter-spacing: -0.04em; margin-bottom: 24px; }
.page-desc { font-size: 1.25rem; color: var(--text-gray); font-weight: 600; max-width: 600px; }

.blog-archive { padding: 40px 0 120px; }

.featured-log {
    background: var(--bg-black); color: var(--bg-white); border: 2px solid var(--border-dark);
    box-shadow: 16px 16px 0 var(--accent-gold); padding: 64px 80px; display: block;
    text-decoration: none; margin-bottom: 80px; position: relative; transition: transform 0.2s, box-shadow 0.2s;
}
.featured-log:hover { transform: translate(-4px, -4px); box-shadow: 20px 20px 0 var(--border-dark); }
.fl-label {
    position: absolute; top: 0; left: 0; background: var(--accent-gold); color: var(--text-black);
    padding: 8px 16px; font-family: var(--font-mono); font-weight: 900; text-transform: uppercase; font-size: 0.85rem;
}
.fl-title { font-size: 3.5rem; font-weight: 900; text-transform: uppercase; line-height: 1.1; margin-top: 24px; margin-bottom: 24px; color: var(--bg-white); letter-spacing: -0.02em; }
.fl-desc { font-size: 1.25rem; color: #AAAAAA; font-weight: 600; max-width: 800px; margin-bottom: 48px; line-height: 1.6; }
.fl-meta { font-family: var(--font-mono); color: var(--accent-gold); font-weight: 800; display: flex; gap: 24px; font-size: 0.95rem; text-transform: uppercase; }

.log-filter-bar { display: flex; gap: 16px; margin-bottom: 48px; border-bottom: 2px solid var(--border-dark); padding-bottom: 24px; }
.filter-tab {
    font-family: var(--font-mono); font-weight: 900; font-size: 1rem;
    padding: 12px 24px; border: 2px solid var(--border-dark); background: var(--bg-white);
    color: var(--text-black); cursor: pointer; text-transform: uppercase;
    transition: all 0.2s; display: flex; align-items: center; gap: 12px;
}
.filter-tab:hover { background: var(--bg-light); }
.filter-tab.active { background: var(--text-black); color: var(--accent-gold); border-color: var(--text-black); }
.f-count { background: var(--border-light); color: var(--text-black); font-size: 0.85rem; padding: 2px 8px; transition: all 0.2s; }
.filter-tab.active .f-count { background: var(--accent-gold); color: var(--text-black); }

.log-list-header {
    display: grid; grid-template-columns: 160px 180px 1fr 120px; padding-bottom: 16px;
    border-bottom: 4px solid var(--text-black); font-family: var(--font-mono); font-weight: 900;
    text-transform: uppercase; font-size: 0.85rem; color: var(--text-gray); margin-bottom: 16px;
}
.log-row {
    display: grid; grid-template-columns: 160px 180px 1fr 120px; gap: 24px; padding: 40px 0;
    border-bottom: 1px solid var(--border-dark); text-decoration: none; color: var(--text-black);
    transition: all 0.2s ease; align-items: flex-start;
}
.log-row:hover {
    background: var(--text-black); color: var(--bg-white);
    padding-left: 32px; padding-right: 32px; border-bottom-color: var(--text-black);
}
.log-date { font-family: var(--font-mono); font-weight: 900; font-size: 1.15rem; transition: color 0.2s; }
.log-row:hover .log-date { color: var(--accent-gold); }
.log-badge { font-family: var(--font-mono); font-weight: 800; font-size: 0.85rem; padding: 4px 12px; border: 2px solid var(--border-dark); display: inline-block; text-transform: uppercase; transition: all 0.2s; }
.log-row:hover .log-badge { border-color: var(--accent-gold); color: var(--accent-gold); }
.log-badge.oc { background: var(--text-black); color: var(--bg-white); }
.log-row:hover .log-badge.oc { background: transparent; }
.log-title { font-size: 1.6rem; font-weight: 900; text-transform: uppercase; margin-bottom: 12px; line-height: 1.2; letter-spacing: -0.01em; transition: color 0.2s; }
.log-row:hover .log-title { color: var(--bg-white); }
.log-snippet { font-size: 1.05rem; color: var(--text-gray); font-weight: 600; line-height: 1.6; transition: color 0.2s; }
.log-row:hover .log-snippet { color: #AAAAAA; }
.log-action { font-family: var(--font-mono); font-weight: 900; text-align: right; text-transform: uppercase; font-size: 1rem; transition: color 0.2s; }
.log-row:hover .log-action { color: var(--accent-gold); }

@media (max-width: 1440px) { .floating-cta { display: none; } }

@media (max-width: 1024px) {
    .article-layout { grid-template-columns: 1fr; gap: 40px; padding-top: 100px; }
    .article-sidebar { position: relative; top: 0; flex-direction: row; flex-wrap: wrap; }
    .toc-box { display: none; }
    .floating-cta { display: none; }
    .log-list-header { display: none; }
    .log-row { grid-template-columns: 1fr; gap: 16px; padding: 32px 24px; border: 2px solid var(--border-dark); margin-bottom: 24px; background: var(--bg-white); }
    .log-row:hover { padding-left: 24px; padding-right: 24px; transform: translateY(-4px); box-shadow: 8px 8px 0 var(--accent-gold); }
    .log-action { text-align: left; margin-top: 16px; }
    .featured-log { padding: 48px 32px; margin-bottom: 64px; }
    .fl-title { font-size: 2.5rem; }
}

@media (max-width: 768px) {
    .blog-header-inner { padding: 0 20px; }
    .blog-list-link { display: none; }
    .article-layout { padding-left: 20px; padding-right: 20px; }
    .article-title { font-size: 2.2rem; }
    .section-label { font-size: 1.6rem; }
    .article-cta { padding: 40px 20px; }
    .article-cta h3 { font-size: 2.2rem; }
    .page-title { font-size: 3.5rem; }
    .log-filter-bar { flex-direction: column; }
    .filter-tab { justify-content: space-between; }
    .blog-list-container { padding: 0 20px; }
    .blog-list-container.page-header { padding: 120px 20px 60px; }
}