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

:root {
    /* Warp Design System — Color Tokens */
    --bg-page: #faf9f6;
    --bg-surface: rgba(0, 0, 0, 0.03);
    --bg-card: #ffffff;

    --text-primary: #1a1a1a;    /* Ink */
    --text-secondary: #555555;  /* Graphite */
    --text-tertiary: #888888;   /* Stone Gray */
    --text-link: #5a5a5e;       /* Slate */

    --btn-bg: #f0eeea;
    --btn-text: #555555;

    --border: rgba(0, 0, 0, 0.10);
    --border-solid: #e0ddd8;

    /* Legacy aliases */
    --primary-color: #555555;
    --primary-hover: #1a1a1a;
    --text-dark: #1a1a1a;
    --text-mid: #555555;
    --text-light: #888888;
    --bg-subtle: rgba(0, 0, 0, 0.03);
    --border-color: rgba(0, 0, 0, 0.10);

    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 14px;
    --radius-pill: 50px;
}

html,
body {
    overflow-x: hidden;
    width: 100%;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', sans-serif;
    font-size: 1rem;
    color: var(--text-primary);
    line-height: 1.6;
    background: var(--bg-page);
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

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

/* ─── Header ─── */
.header {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 0.85rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.logo {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.01em;
}

.nav {
    display: flex;
    gap: 1.75rem;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
}

.nav a {
    text-decoration: none;
    color: var(--text-tertiary);
    font-size: 0.875rem;
    font-weight: 400;
    transition: color 0.2s;
}

.nav a:hover {
    color: var(--text-primary);
}

/* ─── Footer ─── */
.footer {
    background: #f5f3ef;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    text-align: center;
    padding: 2.5rem 0;
    font-size: 0.875rem;
}

/* ─── Section label (editorial uppercase) ─── */
.section-label {
    font-size: 0.72rem;
    font-weight: 400;
    letter-spacing: 2.4px;
    text-transform: uppercase;
    color: var(--text-tertiary);
}

/* ─── Blog Hero ─── */
.blog-hero {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    color: var(--text-primary);
    padding: 5rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.blog-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(0, 0, 0, 0.015) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 0, 0, 0.008) 0%, transparent 50%);
    pointer-events: none;
}

.blog-hero-content {
    position: relative;
    z-index: 1;
}

.blog-hero h1 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 400;
    letter-spacing: -0.03em;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.blog-hero p {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 520px;
    margin: 0 auto;
    line-height: 1.7;
    font-weight: 400;
}

/* ─── Blog Intro ─── */
.blog-intro {
    padding: 2.5rem 0 0;
}

/* ─── Blog Grid ─── */
.blog-section {
    padding: 3rem 0 5rem;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.25rem;
}

/* ─── Blog Card ─── */
.blog-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color 0.2s ease;
    display: flex;
    flex-direction: column;
    cursor: pointer;
}

.blog-card:hover {
    border-color: rgba(0, 0, 0, 0.18);
}

.blog-card-thumb {
    padding: 2rem;
    text-align: center;
    font-size: 2.5rem;
    position: relative;
}

.blog-card-body {
    padding: 1.25rem 1.5rem 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.blog-card-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.6rem;
}

.blog-tag {
    background: rgba(0, 0, 0, 0.05);
    color: var(--text-tertiary);
    font-size: 0.68rem;
    font-weight: 400;
    letter-spacing: 1.4px;
    text-transform: uppercase;
    padding: 0.2rem 0.55rem;
    border-radius: 4px;
}

.blog-date {
    color: var(--text-tertiary);
    font-size: 0.8rem;
}

.blog-card-body h3 {
    font-size: 1rem;
    font-weight: 400;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    line-height: 1.45;
    letter-spacing: -0.01em;
}

.blog-card-body p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
    margin-bottom: 1rem;
    flex-grow: 1;
}

.blog-read-link {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    color: var(--text-tertiary);
    font-weight: 400;
    font-size: 0.82rem;
    text-decoration: none;
    transition: color 0.2s ease, gap 0.2s ease;
}

.blog-read-link:hover {
    gap: 0.5rem;
    color: var(--text-primary);
}

.blog-read-link::after {
    content: '\2192';
}

/* ─── Article Hero ─── */
.article-hero {
    color: white;
    padding: 5rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.article-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(0, 0, 0, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 0, 0, 0.03) 0%, transparent 50%);
    pointer-events: none;
}

.article-hero-content {
    position: relative;
    z-index: 1;
}

.article-hero h1 {
    font-size: clamp(1.5rem, 3.5vw, 2.2rem);
    font-weight: 400;
    margin-bottom: 0.85rem;
    line-height: 1.35;
    letter-spacing: -0.02em;
    color: #faf9f6;
}

.article-hero .article-meta {
    font-size: 0.875rem;
    color: rgba(250, 249, 246, 0.6);
    font-weight: 400;
    letter-spacing: 0.01em;
}

/* ─── Article Body ─── */
.article-body {
    padding: 4rem 0 5rem;
    background: var(--bg-page);
}

.article-content {
    max-width: 720px;
    margin: 0 auto;
}

/* Typography */
.article-content h2 {
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--text-primary);
    margin: 3rem 0 1rem;
    padding-bottom: 0.5rem;
    letter-spacing: -0.02em;
    line-height: 1.3;
    border-bottom: 1px solid var(--border);
}

.article-content h3 {
    font-size: 1.15rem;
    font-weight: 400;
    color: var(--text-primary);
    margin: 2rem 0 0.75rem;
    letter-spacing: -0.01em;
    line-height: 1.4;
}

.article-content h4 {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-primary);
    margin: 1.5rem 0 0.5rem;
    letter-spacing: 0;
}

.article-content p {
    color: var(--text-secondary);
    line-height: 1.85;
    margin-bottom: 1.4rem;
    font-size: 1rem;
    letter-spacing: -0.01em;
}

/* Links */
.article-content a {
    color: var(--text-link);
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-color: rgba(90, 90, 94, 0.4);
    transition: color 0.2s, text-decoration-color 0.2s;
}

.article-content a:hover {
    color: var(--text-primary);
    text-decoration-color: rgba(26, 26, 26, 0.4);
}

/* Emphasis */
.article-content strong {
    color: var(--text-primary);
    font-weight: 500;
}

.article-content em {
    color: var(--text-secondary);
    font-style: italic;
}

/* Lists */
.article-content ul,
.article-content ol {
    margin-bottom: 1.4rem;
    padding-left: 1.5rem;
}

.article-content li {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 0.35rem;
    font-size: 1rem;
    letter-spacing: -0.01em;
}

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

/* Inline code */
.article-content code {
    background: rgba(0, 0, 0, 0.05);
    color: var(--text-primary);
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
    font-size: 0.875em;
    font-family: 'SF Mono', 'Fira Code', 'JetBrains Mono', monospace;
    border: 1px solid rgba(0, 0, 0, 0.08);
}

/* Code blocks */
.article-content pre {
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.4rem;
    overflow-x: auto;
    margin: 1.5rem 0;
}

.article-content pre code {
    background: none;
    border: none;
    padding: 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.65;
}

/* Blockquotes */
.article-content blockquote {
    border-left: 2px solid rgba(0, 0, 0, 0.10);
    padding: 0.25rem 0 0.25rem 1.25rem;
    margin: 1.5rem 0;
    color: var(--text-tertiary);
    font-style: normal;
}

.article-content blockquote p {
    color: var(--text-tertiary);
    margin-bottom: 0;
}

/* Horizontal rule */
.article-content hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 2rem 0;
}

/* Tables */
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.9rem;
}

.article-content th {
    text-align: left;
    color: var(--text-tertiary);
    font-weight: 400;
    font-size: 0.72rem;
    letter-spacing: 1.4px;
    text-transform: uppercase;
    padding: 0.6rem 0.75rem;
    border-bottom: 1px solid var(--border);
}

.article-content td {
    color: var(--text-secondary);
    padding: 0.6rem 0.75rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    line-height: 1.6;
}

/* Images */
.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 1rem 0;
    opacity: 0.9;
}

/* Highlight card */
.highlight-card {
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.5rem 1.75rem;
    margin: 1.75rem 0;
}

.highlight-card h3 {
    font-size: 0.875rem;
    font-weight: 400;
    letter-spacing: 1.4px;
    text-transform: uppercase;
    color: var(--text-tertiary);
    margin: 0 0 1rem;
}

/* Article nav */
.article-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
    gap: 0.75rem;
}

.article-nav a {
    color: var(--text-tertiary);
    text-decoration: none;
    font-weight: 400;
    font-size: 0.875rem;
    transition: color 0.2s;
}

.article-nav a:hover {
    color: var(--text-primary);
}

/* ─── Responsive — Tablet (768px) ─── */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        text-align: center;
        padding-bottom: 0.25rem;
    }

    .logo {
        margin-bottom: 0.25rem;
    }

    .nav {
        gap: 0.6rem 1rem;
        width: 100%;
        justify-content: center;
    }

    .nav a {
        white-space: nowrap;
        font-size: 0.82rem;
    }

    .blog-hero {
        padding: 3rem 0;
    }

    .blog-intro {
        padding: 1.5rem 0 0;
    }

    .blog-intro p {
        font-size: 0.88rem !important;
        line-height: 1.65 !important;
    }

    .blog-section {
        padding: 1.5rem 0 3rem;
    }

    .blog-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .blog-card {
        flex-direction: row;
        border-radius: var(--radius-md);
    }

    .blog-card-thumb {
        padding: 0;
        font-size: 1.6rem;
        min-width: 4.5rem;
        max-width: 4.5rem;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: var(--radius-md) 0 0 var(--radius-md);
    }

    .blog-card-body {
        padding: 0.75rem 1rem;
    }

    .blog-card-meta {
        margin-bottom: 0.25rem;
    }

    .blog-tag {
        font-size: 0.6rem;
    }

    .blog-date {
        font-size: 0.7rem;
    }

    .blog-card-body h3 {
        font-size: 0.875rem;
        margin-bottom: 0.2rem;
        line-height: 1.35;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .blog-card-body p {
        font-size: 0.75rem;
        line-height: 1.45;
        margin-bottom: 0.35rem;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .blog-read-link {
        font-size: 0.75rem;
    }

    .article-hero {
        padding: 3rem 0;
    }

    .article-hero h1 {
        font-size: 1.35rem;
        line-height: 1.3;
    }

    .article-body {
        padding: 2.5rem 0 3.5rem;
    }

    .article-content h2 {
        font-size: 1.25rem;
        margin: 2.25rem 0 0.75rem;
    }

    .article-content h3 {
        font-size: 1.05rem;
        margin: 1.5rem 0 0.6rem;
    }

    .article-content p,
    .article-content li {
        line-height: 1.75;
        font-size: 0.9375rem;
    }

    .highlight-card {
        padding: 1.25rem;
        margin: 1.25rem 0;
    }

    .article-nav {
        margin-top: 2rem;
        padding-top: 1rem;
    }

    .footer {
        padding: 1.5rem 0;
        font-size: 0.8rem;
    }
}

/* ─── Responsive — Small mobile (480px) ─── */
@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .nav {
        gap: 0.4rem 0.65rem;
    }

    .blog-hero {
        padding: 2.25rem 0;
    }

    .blog-section {
        padding: 1.25rem 0 2rem;
    }

    .blog-card-thumb {
        min-width: 3.5rem;
        max-width: 3.5rem;
        font-size: 1.3rem;
    }

    .blog-card-body {
        padding: 0.6rem 0.75rem;
    }

    .blog-card-body h3 {
        font-size: 0.82rem;
    }

    .article-hero {
        padding: 2rem 0;
    }

    .article-hero h1 {
        font-size: 1.15rem;
    }

    .article-body {
        padding: 2rem 0 2.5rem;
    }

    .article-content h2 {
        font-size: 1.1rem;
        margin: 1.75rem 0 0.6rem;
    }

    .article-content p,
    .article-content li {
        font-size: 0.9rem;
    }
}

/* Timeline "show more" disclosure */
.timeline-more > summary {
    display: inline-block;
}

.timeline-more > summary::-webkit-details-marker {
    display: none;
}

.timeline-more > summary::marker {
    content: '';
}

.timeline-more > summary:hover {
    color: #1a1a1a;
}

.timeline-more[open] > summary {
    display: none;
}

/* Progressive enhancement: all content stays accessible without JavaScript. */
[hidden] { display: none !important; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 2px solid #56564b; outline-offset: 4px; }
.release-summary { max-width:980px; margin:0 auto; padding:2.5rem 1.5rem 1.5rem; }
.release-stats { background:rgba(0,0,0,.03); border:1px solid rgba(0,0,0,.10); border-radius:16px; padding:1.5rem; display:grid; grid-template-columns:repeat(auto-fit,minmax(180px,1fr)); gap:1rem; }
.release-label { font-size:.72rem; letter-spacing:1.6px; text-transform:uppercase; color:#888; margin-bottom:.45rem; }
.release-number { font-size:1.5rem; color:#1a1a1a; }
.release-latest { font-size:1.1rem; color:#1a1a1a; line-height:1.5; }
.release-section { max-width:980px; margin:0 auto; padding:1rem 1.5rem 5rem; }
.release-timeline { position:relative; padding-left:2rem; }
.release-timeline::before { content:''; position:absolute; left:6px; top:8px; bottom:8px; width:1px; background:rgba(0,0,0,.08); border-radius:1px; }
.release-entry { position:relative; margin-bottom:2rem; }
.release-entry:last-child { margin-bottom:0; }
.release-entry::before { content:''; position:absolute; left:-2rem; top:4px; width:13px; height:13px; border-radius:50%; background:#fff; border:1px solid rgba(0,0,0,.20); }
.release-entry-meta { display:flex; align-items:center; gap:.75rem; margin-bottom:.9rem; flex-wrap:wrap; }
.release-entry-meta time { color:#888; font-size:.875rem; }
.release-badge { display:inline-block; background:#f0eeea; color:#555; padding:.3rem .85rem; border-radius:50px; font-size:.8rem; letter-spacing:.02em; }
.release-entry-body { background:rgba(0,0,0,.03); border:1px solid rgba(0,0,0,.10); border-radius:16px; padding:1.5rem; }
.release-entry-body > p { color:#555; line-height:1.9; font-size:.96rem; margin-bottom:1.25rem; }
.release-posts { display:grid; grid-template-columns:repeat(auto-fit,minmax(min(250px,100%),1fr)); gap:.9rem; }
.release-post { display:block; text-decoration:none; background:rgba(0,0,0,.02); border:1px solid rgba(0,0,0,.08); border-radius:14px; padding:1rem; }
.release-post > div { display:flex; align-items:center; gap:.6rem; margin-bottom:.7rem; }
.release-emoji { font-size:1.1rem; }
.release-post .release-label { font-size:.68rem; letter-spacing:1.2px; margin-bottom:0; }
.release-post h2 { font-size:1rem; line-height:1.65; color:#1a1a1a; margin:0; font-weight:400; }
.not-found { min-height:60vh; max-width:800px; padding:5rem 1.5rem; margin:0 auto; }
.not-found h1 { font-size:clamp(1.5rem,4vw,2rem); font-weight:400; margin-bottom:1rem; }
.not-found p { color:#555; margin-bottom:2rem; }
.not-found a { display:inline-block; margin-right:2rem; padding:.75rem 0; }