:root {
    --accent: #0066FF;
    --accent-light: #E8F1FF;
    --accent-glow: rgba(0, 102, 255, 0.15);
    --telegram: #2AABEE;
    --success: #00C853;
    --warning: #FF9500;
    --dark: #0A0A0B;
    --dark-soft: #18181B;
    --gray-900: #27272A;
    --gray-700: #3F3F46;
    --gray-500: #71717A;
    --gray-400: #A1A1AA;
    --gray-200: #E4E4E7;
    --gray-100: #F4F4F5;
    --white: #FFFFFF;
    --font-display: 'Manrope', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-display);
    color: var(--dark);
    line-height: 1.6;
    background: var(--white);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 760px; margin: 0 auto; padding: 0 24px; }

/* ===== HEADER ===== */
.blog-header {
    padding: 16px 0;
    position: sticky;
    top: 0;
    background: rgba(255,255,255,0.88);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 100;
    border-bottom: 1px solid var(--gray-200);
}
.blog-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}
.blog-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: inherit;
}
.blog-logo:hover { text-decoration: none; }
.blog-logo-mark {
    width: 38px;
    height: 38px;
    background: var(--dark);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-family: var(--font-mono);
    font-weight: 500;
    font-size: 13px;
    letter-spacing: -0.5px;
}
.blog-logo-text {
    font-weight: 700;
    font-size: 18px;
    color: var(--dark);
    letter-spacing: -0.3px;
}
.blog-logo-tags { display: flex; gap: 6px; margin-left: 4px; }
.blog-tag {
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    background: var(--gray-100);
    color: var(--gray-500);
    letter-spacing: 0.3px;
}
.blog-nav { display: flex; align-items: center; gap: 18px; }
.blog-nav-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-700);
    text-decoration: none;
    padding: 8px 4px;
    border-bottom: 2px solid transparent;
    transition: border-color .2s;
}
.blog-nav-link:hover { color: var(--dark); text-decoration: none; }
.blog-nav-link.active { color: var(--dark); border-bottom-color: var(--accent); }

.blog-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 14px;
    text-decoration: none;
    transition: all .2s cubic-bezier(0.4,0,0.2,1);
    cursor: pointer;
    border: none;
    letter-spacing: -0.2px;
    font-family: inherit;
}
.blog-btn:hover { text-decoration: none; }
.blog-btn-primary { background: var(--dark); color: white; }
.blog-btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(0,0,0,.15); }
.blog-btn-accent { background: var(--accent); color: white; }
.blog-btn-accent:hover { background: #0052CC; transform: translateY(-1px); box-shadow: 0 6px 20px var(--accent-glow); }
.blog-btn-ghost { background: transparent; color: var(--dark); border: 1px solid var(--gray-200); }
.blog-btn-ghost:hover { background: var(--gray-100); border-color: var(--gray-400); }

/* ===== BLOG INDEX ===== */
.blog-hero { padding: 72px 0 48px; background: linear-gradient(180deg, var(--gray-100) 0%, var(--white) 100%); }
.blog-hero-inner { max-width: 760px; }
.blog-hero-badge {
    display: inline-block;
    background: var(--accent-light);
    color: var(--accent);
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 20px;
}
.blog-hero-title {
    font-size: clamp(32px, 5vw, 52px);
    font-weight: 800;
    letter-spacing: -1.2px;
    line-height: 1.1;
    margin-bottom: 20px;
}
.blog-hero-subtitle {
    font-size: 18px;
    color: var(--gray-700);
    max-width: 640px;
}

.blog-list-section { padding: 48px 0 96px; }
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 24px;
}
.blog-card {
    display: flex;
    flex-direction: column;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 16px;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: transform .2s, box-shadow .2s, border-color .2s;
}
.blog-card:hover {
    text-decoration: none;
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0,0,0,.08);
    border-color: var(--accent);
}
.blog-card-cover {
    aspect-ratio: 16 / 9;
    background: var(--gray-100);
    overflow: hidden;
}
.blog-card-cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
.blog-card-body { padding: 20px; display: flex; flex-direction: column; flex: 1; gap: 10px; }
.blog-card-meta {
    font-size: 12px;
    color: var(--gray-500);
    display: flex;
    gap: 6px;
    font-weight: 500;
}
.blog-card-dot { color: var(--gray-400); }
.blog-card-title {
    font-size: 20px;
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.3px;
    color: var(--dark);
}
.blog-card-description { color: var(--gray-700); font-size: 14px; line-height: 1.5; flex: 1; }
.blog-card-more { color: var(--accent); font-weight: 600; font-size: 14px; margin-top: auto; }

.blog-empty {
    text-align: center;
    padding: 80px 0;
    color: var(--gray-500);
}
.blog-empty p { margin-bottom: 20px; font-size: 18px; }

/* ===== ARTICLE ===== */
.blog-article { padding: 40px 0 96px; }

.blog-breadcrumbs {
    display: flex;
    gap: 8px;
    font-size: 13px;
    color: var(--gray-500);
    margin-bottom: 32px;
    flex-wrap: wrap;
}
.blog-breadcrumbs a { color: var(--gray-500); }
.blog-breadcrumbs a:hover { color: var(--accent); }
.blog-breadcrumbs-current { color: var(--dark); font-weight: 600; }

.blog-article-header { margin-bottom: 32px; }
.blog-article-meta {
    display: flex;
    gap: 8px;
    font-size: 13px;
    color: var(--gray-500);
    margin-bottom: 16px;
    flex-wrap: wrap;
}
.blog-article-title {
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 800;
    letter-spacing: -1px;
    line-height: 1.15;
    color: var(--dark);
    margin-bottom: 16px;
}
.blog-article-lead {
    font-size: 19px;
    color: var(--gray-700);
    line-height: 1.5;
}

.blog-article-cover {
    margin: 0 -24px 32px;
    border-radius: 16px;
    overflow: hidden;
    background: var(--gray-100);
}
.blog-article-cover img { width: 100%; display: block; }

/* typography for markdown content */
.blog-article-body { font-size: 17px; line-height: 1.7; color: var(--dark); }
.blog-article-body > * + * { margin-top: 1em; }
.blog-article-body h2 {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-top: 1.6em;
    margin-bottom: 0.4em;
    line-height: 1.25;
}
.blog-article-body h3 {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.3px;
    margin-top: 1.4em;
    margin-bottom: 0.3em;
    line-height: 1.3;
}
.blog-article-body h4 {
    font-size: 18px;
    font-weight: 700;
    margin-top: 1.2em;
    margin-bottom: 0.2em;
}
.blog-article-body p { margin: 0; }
.blog-article-body ul,
.blog-article-body ol { margin-left: 1.4em; }
.blog-article-body li { margin-bottom: 0.3em; }
.blog-article-body li > ul,
.blog-article-body li > ol { margin-top: 0.3em; }
.blog-article-body a { color: var(--accent); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.blog-article-body strong { font-weight: 700; color: var(--dark); }
.blog-article-body blockquote {
    border-left: 3px solid var(--accent);
    padding: 4px 0 4px 20px;
    color: var(--gray-700);
    background: var(--accent-light);
    border-radius: 0 8px 8px 0;
    margin: 1.4em 0;
}
.blog-article-body blockquote p { margin: 0; }
.blog-article-body code {
    background: var(--gray-100);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.9em;
}
.blog-article-body pre {
    background: var(--dark);
    color: #F4F4F5;
    padding: 16px 20px;
    border-radius: 10px;
    overflow-x: auto;
    font-size: 14px;
    line-height: 1.5;
}
.blog-article-body pre code { background: transparent; padding: 0; color: inherit; }
.blog-article-body img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    border: 1px solid var(--gray-200);
    margin: 1em 0;
    display: block;
}
.blog-article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.2em 0;
    font-size: 15px;
}
.blog-article-body th,
.blog-article-body td {
    padding: 10px 14px;
    border: 1px solid var(--gray-200);
    text-align: left;
}
.blog-article-body th { background: var(--gray-100); font-weight: 700; }
.blog-article-body hr { border: none; border-top: 1px solid var(--gray-200); margin: 2em 0; }

/* ===== CTA BLOCK ===== */
.blog-cta-block {
    margin-top: 48px;
    background: linear-gradient(135deg, var(--dark) 0%, #1A1A2E 100%);
    color: var(--white);
    padding: 40px;
    border-radius: 20px;
    text-align: center;
}
.blog-cta-block h3 {
    font-size: 26px;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 12px;
    color: var(--white);
}
.blog-cta-block p { color: rgba(255,255,255,.75); margin-bottom: 24px; font-size: 16px; }
.blog-cta-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}
.blog-cta-block .blog-btn-ghost {
    background: transparent;
    color: var(--white);
    border-color: rgba(255,255,255,.25);
}
.blog-cta-block .blog-btn-ghost:hover { background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.4); }

/* ===== RELATED ===== */
.blog-related { margin-top: 64px; }
.blog-related h3 {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.3px;
    margin-bottom: 20px;
}
.blog-related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
}
.blog-related-card {
    padding: 18px 20px;
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    text-decoration: none;
    color: inherit;
    transition: all .2s;
}
.blog-related-card:hover {
    text-decoration: none;
    border-color: var(--accent);
    background: var(--accent-light);
}
.blog-related-title { font-weight: 700; font-size: 15px; line-height: 1.35; color: var(--dark); margin-bottom: 6px; }
.blog-related-desc { font-size: 13px; color: var(--gray-700); line-height: 1.4; }

/* ===== FOOTER ===== */
.blog-footer {
    padding: 40px 0;
    border-top: 1px solid var(--gray-200);
    background: var(--gray-100);
    font-size: 14px;
    color: var(--gray-700);
}
.blog-footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}
.blog-footer a { color: var(--gray-700); }
.blog-footer a:hover { color: var(--accent); }
.blog-footer-dot { color: var(--gray-400); margin: 0 4px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 680px) {
    .blog-header-inner { flex-wrap: wrap; }
    .blog-nav { gap: 10px; flex-wrap: wrap; }
    .blog-nav-link { padding: 6px 2px; font-size: 13px; }
    .blog-btn { padding: 8px 12px; font-size: 13px; }
    .blog-hero { padding: 40px 0 28px; }
    .blog-article { padding: 24px 0 64px; }
    .blog-article-cover { margin: 0 0 24px; }
    .blog-cta-block { padding: 28px 20px; }
    .blog-cta-block h3 { font-size: 22px; }
}