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

:root {
    --canvas: #f7f7f4;
    --canvas-soft: #fafaf7;
    --surface-card: #ffffff;
    --surface-strong: #e6e5e0;
    --primary: #f54e00;
    --primary-active: #d04200;
    --ink: #26251e;
    --body: #5a5852;
    --muted: #807d72;
    --muted-soft: #a09c92;
    --on-primary: #ffffff;
    --hairline: #e6e5e0;
    --hairline-soft: #efeee8;
    --hairline-strong: #cfcdc4;
    --success: #1f8a65;
    --error: #cf2d56;
    --radius-xs: 4px;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-pill: 9999px;
    --font-sans: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
}

html { font-size: 16px; scroll-behavior: smooth; }
body { background: var(--canvas); color: var(--body); font-family: var(--font-sans); font-size: 16px; line-height: 1.5; letter-spacing: 0; }

a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--primary); }
img { max-width: 100%; height: auto; display: block; }

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

.site-header { background: var(--canvas); border-bottom: 1px solid var(--hairline); height: 64px; position: sticky; top: 0; z-index: 100; }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.site-logo { font-family: var(--font-sans); font-size: 18px; font-weight: 600; color: var(--ink); letter-spacing: -0.02em; }
.site-logo span { color: var(--primary); }
.site-nav { display: flex; align-items: center; gap: 32px; }
.nav-link { font-size: 14px; font-weight: 500; color: var(--muted); line-height: 1.4; transition: color 0.15s; }
.nav-link:hover, .nav-link--active { color: var(--ink); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); border-radius: 2px; transition: all 0.2s; }

.hero { padding: 80px 0 64px; border-bottom: 1px solid var(--hairline); }
.hero-badge { display: inline-flex; align-items: center; background: var(--surface-strong); color: var(--ink); font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; padding: 4px 10px; border-radius: var(--radius-pill); margin-bottom: 24px; }
.hero h1 { font-size: 52px; font-weight: 400; line-height: 1.1; letter-spacing: -1.5px; color: var(--ink); max-width: 780px; margin-bottom: 20px; }
.hero-lead { font-size: 18px; line-height: 1.5; color: var(--body); max-width: 600px; margin-bottom: 40px; }
.hero-image { margin-top: 48px; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--hairline); max-height: 460px; }
.hero-image img { width: 100%; height: 460px; object-fit: cover; }

.section { padding: 80px 0; }
.section + .section { border-top: 1px solid var(--hairline); }
.section-label { display: inline-block; font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); margin-bottom: 16px; }
.section-title { font-size: 36px; font-weight: 400; line-height: 1.2; letter-spacing: -0.72px; color: var(--ink); margin-bottom: 16px; }
.section-lead { font-size: 16px; line-height: 1.5; color: var(--body); max-width: 640px; margin-bottom: 48px; }

.articles-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.article-card { background: var(--surface-card); border: 1px solid var(--hairline); border-radius: var(--radius-lg); overflow: hidden; transition: border-color 0.15s; }
.article-card:hover { border-color: var(--hairline-strong); }
.article-card-image { height: 200px; overflow: hidden; }
.article-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s; }
.article-card:hover .article-card-image img { transform: scale(1.03); }
.article-card-body { padding: 24px; }
.article-card-tag { font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; display: block; }
.article-card-title { font-size: 18px; font-weight: 600; line-height: 1.35; color: var(--ink); margin-bottom: 10px; }
.article-card-excerpt { font-size: 14px; line-height: 1.5; color: var(--body); margin-bottom: 16px; }
.article-card-meta { font-size: 13px; color: var(--muted); }

.article-hero { padding: 64px 0 48px; border-bottom: 1px solid var(--hairline); }
.article-hero-tag { font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); display: block; margin-bottom: 16px; }
.article-hero h1 { font-size: 42px; font-weight: 400; line-height: 1.15; letter-spacing: -0.8px; color: var(--ink); max-width: 720px; margin-bottom: 16px; }
.article-meta { font-size: 13px; color: var(--muted); display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 32px; }
.article-hero-image { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--hairline); max-height: 440px; }
.article-hero-image img { width: 100%; height: 440px; object-fit: cover; }

.article-layout { display: grid; grid-template-columns: 1fr 300px; gap: 48px; padding: 64px 0 80px; }
.article-body { min-width: 0; }
.article-body h2 { font-size: 26px; font-weight: 400; line-height: 1.25; letter-spacing: -0.325px; color: var(--ink); margin: 40px 0 16px; }
.article-body h3 { font-size: 20px; font-weight: 600; line-height: 1.3; color: var(--ink); margin: 28px 0 12px; }
.article-body p { font-size: 16px; line-height: 1.65; color: var(--body); margin-bottom: 20px; }
.article-body ul, .article-body ol { padding-left: 24px; margin-bottom: 20px; }
.article-body li { font-size: 16px; line-height: 1.65; color: var(--body); margin-bottom: 6px; }
.article-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; }
.article-body a:hover { color: var(--primary-active); }
.article-body blockquote { border-left: 3px solid var(--hairline-strong); padding: 12px 20px; margin: 24px 0; background: var(--canvas-soft); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.article-body blockquote p { color: var(--muted); font-size: 15px; margin: 0; }
.article-body .info-box { background: var(--surface-card); border: 1px solid var(--hairline); border-radius: var(--radius-lg); padding: 24px; margin: 28px 0; }
.article-body .info-box h4 { font-size: 14px; font-weight: 600; letter-spacing: 0.5px; text-transform: uppercase; color: var(--muted); margin-bottom: 12px; }
.article-body .info-box p { font-size: 14px; margin: 0; }
.article-body table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 14px; }
.article-body th { text-align: left; padding: 10px 16px; background: var(--canvas-soft); color: var(--ink); font-weight: 600; border-bottom: 1px solid var(--hairline-strong); }
.article-body td { padding: 10px 16px; color: var(--body); border-bottom: 1px solid var(--hairline-soft); }
.article-body tr:last-child td { border-bottom: none; }

.article-sidebar { position: sticky; top: 80px; align-self: start; }
.sidebar-card { background: var(--surface-card); border: 1px solid var(--hairline); border-radius: var(--radius-lg); padding: 24px; margin-bottom: 20px; }
.sidebar-card h3 { font-size: 13px; font-weight: 600; letter-spacing: 0.5px; text-transform: uppercase; color: var(--muted); margin-bottom: 16px; }
.sidebar-card ul { list-style: none; padding: 0; }
.sidebar-card li { padding: 6px 0; border-bottom: 1px solid var(--hairline-soft); }
.sidebar-card li:last-child { border-bottom: none; }
.sidebar-card a { font-size: 14px; color: var(--body); line-height: 1.4; }
.sidebar-card a:hover { color: var(--primary); }
.sidebar-toc a { font-size: 13px; color: var(--muted); display: block; padding: 4px 0; }
.sidebar-toc a:hover { color: var(--ink); }
.sidebar-toc .toc-h3 { padding-left: 12px; }

.page-hero { padding: 64px 0 48px; border-bottom: 1px solid var(--hairline); }
.page-hero h1 { font-size: 42px; font-weight: 400; line-height: 1.15; letter-spacing: -0.8px; color: var(--ink); margin-bottom: 12px; }
.page-hero p { font-size: 16px; color: var(--body); max-width: 600px; }
.page-content { padding: 64px 0 80px; max-width: 720px; }
.page-content h2 { font-size: 22px; font-weight: 600; color: var(--ink); margin: 36px 0 12px; }
.page-content h3 { font-size: 18px; font-weight: 600; color: var(--ink); margin: 24px 0 8px; }
.page-content p { font-size: 16px; line-height: 1.65; color: var(--body); margin-bottom: 16px; }
.page-content ul, .page-content ol { padding-left: 24px; margin-bottom: 16px; }
.page-content li { font-size: 16px; line-height: 1.65; color: var(--body); margin-bottom: 6px; }
.page-content a { color: var(--primary); }
.page-updated { font-size: 13px; color: var(--muted); margin-top: 48px; padding-top: 20px; border-top: 1px solid var(--hairline); }

.btn { display: inline-flex; align-items: center; justify-content: center; font-family: var(--font-sans); font-size: 14px; font-weight: 500; line-height: 1; border: none; border-radius: var(--radius-md); cursor: pointer; padding: 10px 18px; height: 40px; transition: background 0.15s, color 0.15s; text-decoration: none; }
.btn-primary { background: var(--primary); color: var(--on-primary); }
.btn-primary:hover { background: var(--primary-active); color: var(--on-primary); }
.btn-secondary { background: var(--surface-card); color: var(--ink); border: 1px solid var(--hairline-strong); }
.btn-secondary:hover { border-color: var(--ink); color: var(--ink); }

.contact-section { padding: 80px 0; border-top: 1px solid var(--hairline); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.contact-info h2 { font-size: 26px; font-weight: 400; letter-spacing: -0.3px; color: var(--ink); margin-bottom: 16px; }
.contact-info p { font-size: 16px; line-height: 1.65; color: var(--body); margin-bottom: 12px; }
.contact-detail { display: flex; flex-direction: column; gap: 4px; margin-bottom: 16px; }
.contact-detail span { font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); }
.contact-detail a, .contact-detail p { font-size: 15px; color: var(--ink); margin: 0; }
.contact-form { background: var(--surface-card); border: 1px solid var(--hairline); border-radius: var(--radius-lg); padding: 32px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.form-group input, .form-group textarea { width: 100%; background: var(--canvas-soft); border: 1px solid var(--hairline-strong); border-radius: var(--radius-md); padding: 12px 16px; font-family: var(--font-sans); font-size: 14px; color: var(--ink); line-height: 1.5; transition: border-color 0.15s; }
.form-group input { height: 44px; }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--primary); }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--muted-soft); }
.form-submit { width: 100%; height: 44px; font-size: 15px; }
.form-msg { display: none; margin-top: 16px; padding: 12px 16px; border-radius: var(--radius-md); font-size: 14px; }
.form-msg--success { background: #e8f5f0; color: var(--success); border: 1px solid #b8dfd0; }
.form-msg--loading { background: var(--canvas-soft); color: var(--muted); border: 1px solid var(--hairline); }

.site-footer { background: var(--canvas); border-top: 1px solid var(--hairline); padding: 64px 0 0; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 48px; }
.footer-brand { font-size: 16px; font-weight: 600; color: var(--ink); display: block; margin-bottom: 12px; }
.footer-tagline { font-size: 14px; line-height: 1.5; color: var(--muted); max-width: 260px; }
.footer-col-title { font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); margin-bottom: 16px; }
.footer-link { display: block; font-size: 14px; color: var(--body); margin-bottom: 10px; transition: color 0.15s; }
.footer-link:hover { color: var(--ink); }
.footer-bottom { border-top: 1px solid var(--hairline); padding: 20px 0; display: flex; }
.footer-bottom .container { display: flex; justify-content: space-between; width: 100%; }
.footer-copy { font-size: 13px; color: var(--muted); }

.cookie-banner { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); width: calc(100% - 48px); max-width: 640px; background: var(--ink); color: var(--canvas); border-radius: var(--radius-lg); padding: 20px 24px; z-index: 1000; box-shadow: 0 4px 24px rgba(38,37,30,0.18); }
.cookie-inner { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.cookie-text { font-size: 14px; color: var(--canvas-soft); flex: 1; min-width: 200px; }
.cookie-text a { color: var(--on-primary); text-decoration: underline; }
.cookie-actions { display: flex; gap: 10px; flex-shrink: 0; }
.cookie-actions .btn-primary { background: var(--primary); }
.cookie-actions .btn-secondary { background: transparent; color: var(--canvas); border-color: rgba(255,255,255,0.3); }
.cookie-actions .btn-secondary:hover { border-color: var(--canvas); }

.disclaimer-banner { background: var(--canvas-soft); border-bottom: 1px solid var(--hairline); padding: 10px 0; }
.disclaimer-banner p { font-size: 13px; color: var(--muted); text-align: center; }

@media (max-width: 1024px) {
    .articles-grid { grid-template-columns: repeat(2, 1fr); }
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { position: static; }
    .footer-inner { grid-template-columns: 1fr 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 40px; }
    .section-title { font-size: 30px; }
}

@media (max-width: 768px) {
    .site-nav { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: var(--canvas); border-bottom: 1px solid var(--hairline); padding: 16px 24px; gap: 0; }
    .site-nav.nav-open { display: flex; }
    .nav-link { padding: 12px 0; border-bottom: 1px solid var(--hairline-soft); width: 100%; }
    .nav-toggle { display: flex; }
    .site-header { position: relative; }
    .articles-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 32px; letter-spacing: -0.8px; }
    .hero-image img { height: 260px; }
    .article-hero h1 { font-size: 28px; }
    .article-hero-image img { height: 260px; }
    .footer-inner { grid-template-columns: 1fr 1fr; gap: 24px; }
    .footer-bottom .container { flex-direction: column; gap: 6px; }
    .cookie-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
    .footer-inner { grid-template-columns: 1fr; }
    .hero { padding: 48px 0 40px; }
    .section { padding: 48px 0; }
    .contact-form { padding: 20px; }
}