@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400&display=swap');

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

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

html { font-size: 16px; scroll-behavior: smooth; }
body { font-family: var(--font-sans); background: var(--color-canvas); color: var(--color-body); line-height: 1.5; -webkit-font-smoothing: antialiased; }
a { color: var(--color-ink); text-decoration: none; }
a:hover { color: var(--color-primary); }
img { max-width: 100%; height: auto; display: block; }

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

.site-nav { background: var(--color-canvas); border-bottom: 1px solid var(--color-hairline); height: 64px; position: sticky; top: 0; z-index: 100; }
.site-nav .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.nav-logo { font-size: 18px; font-weight: 600; color: var(--color-ink); letter-spacing: -0.3px; }
.nav-logo span { color: var(--color-primary); }
.nav-links { display: flex; align-items: center; gap: 32px; list-style: none; }
.nav-links a { font-size: 14px; font-weight: 500; color: var(--color-body); transition: color 0.15s; }
.nav-links a:hover { color: var(--color-ink); }
.nav-hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 4px; }
.nav-hamburger span { display: block; width: 22px; height: 2px; background: var(--color-ink); border-radius: 2px; }
.nav-mobile { display: none; position: absolute; top: 64px; left: 0; right: 0; background: var(--color-canvas); border-bottom: 1px solid var(--color-hairline); padding: 16px 24px; flex-direction: column; }
.nav-mobile.open { display: flex; }
.nav-mobile a { display: block; font-size: 15px; font-weight: 500; color: var(--color-body); padding: 12px 0; border-bottom: 1px solid var(--color-hairline-soft); }
.nav-mobile a:last-child { border-bottom: none; }

.hero { padding: 80px 0; }
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.hero-label { display: inline-block; font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--color-muted); background: var(--color-surface-strong); padding: 4px 10px; border-radius: var(--radius-pill); margin-bottom: 20px; }
.hero h1 { font-size: 52px; font-weight: 400; line-height: 1.1; letter-spacing: -1.5px; color: var(--color-ink); margin-bottom: 20px; }
.hero-desc { font-size: 16px; color: var(--color-body); line-height: 1.6; max-width: 480px; margin-bottom: 24px; }
.hero-meta { font-size: 13px; color: var(--color-muted); }
.hero-image { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--color-hairline); }
.hero-image img { width: 100%; height: 400px; object-fit: cover; }

.section-label { font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--color-muted); margin-bottom: 12px; }
.section-header { margin-bottom: 40px; }
.section-header h2 { font-size: 36px; font-weight: 400; letter-spacing: -0.72px; color: var(--color-ink); line-height: 1.2; margin-bottom: 12px; }
.section-header p { font-size: 16px; color: var(--color-body); max-width: 560px; line-height: 1.6; }

.articles-section { padding: 80px 0; border-top: 1px solid var(--color-hairline); }
.articles-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.article-card { background: var(--color-surface-card); border: 1px solid var(--color-hairline); border-radius: var(--radius-lg); overflow: hidden; transition: border-color 0.15s; }
.article-card:hover { border-color: var(--color-hairline-strong); }
.article-card-img { width: 100%; height: 200px; object-fit: cover; }
.article-card-body { padding: 24px; }
.article-card-tag { display: inline-block; font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--color-muted); background: var(--color-surface-strong); padding: 3px 8px; border-radius: var(--radius-pill); margin-bottom: 12px; }
.article-card h3 { font-size: 18px; font-weight: 600; color: var(--color-ink); line-height: 1.35; margin-bottom: 10px; }
.article-card p { font-size: 14px; color: var(--color-body); line-height: 1.6; margin-bottom: 16px; }
.article-card-meta { font-size: 13px; color: var(--color-muted); border-top: 1px solid var(--color-hairline-soft); padding-top: 12px; }
.read-link { display: inline-block; font-size: 14px; font-weight: 500; color: var(--color-primary); margin-top: 8px; }
.read-link:hover { color: var(--color-primary-active); }

.info-band { padding: 80px 0; background: var(--color-surface-card); border-top: 1px solid var(--color-hairline); border-bottom: 1px solid var(--color-hairline); }
.info-band-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.info-item h3 { font-size: 22px; font-weight: 400; letter-spacing: -0.11px; color: var(--color-ink); margin-bottom: 8px; }
.info-item p { font-size: 14px; color: var(--color-body); line-height: 1.6; }

.facts-section { padding: 80px 0; }
.facts-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.facts-image { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--color-hairline); }
.facts-image img { width: 100%; height: 320px; object-fit: cover; }
.facts-content h2 { font-size: 36px; font-weight: 400; letter-spacing: -0.72px; color: var(--color-ink); line-height: 1.2; margin-bottom: 20px; }
.facts-list { list-style: none; display: flex; flex-direction: column; gap: 16px; }
.facts-list li { display: flex; gap: 12px; align-items: flex-start; font-size: 15px; color: var(--color-body); line-height: 1.55; padding-bottom: 16px; border-bottom: 1px solid var(--color-hairline-soft); }
.facts-list li:last-child { border-bottom: none; padding-bottom: 0; }
.fact-dot { width: 6px; height: 6px; min-width: 6px; background: var(--color-primary); border-radius: var(--radius-pill); margin-top: 8px; }

.contact-section { padding: 80px 0; border-top: 1px solid var(--color-hairline); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.contact-info h2 { font-size: 36px; font-weight: 400; letter-spacing: -0.72px; color: var(--color-ink); margin-bottom: 16px; }
.contact-info p { font-size: 15px; color: var(--color-body); line-height: 1.6; margin-bottom: 24px; }
.contact-details { display: flex; flex-direction: column; gap: 12px; }
.contact-detail-item { font-size: 14px; color: var(--color-muted); }
.contact-detail-item strong { color: var(--color-body-strong); font-weight: 500; }
.contact-form { background: var(--color-surface-card); border: 1px solid var(--color-hairline); border-radius: var(--radius-lg); padding: 32px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 500; color: var(--color-ink); margin-bottom: 6px; }
.form-group input, .form-group textarea { width: 100%; background: var(--color-surface-card); color: var(--color-ink); border: 1px solid var(--color-hairline-strong); border-radius: var(--radius-md); padding: 12px 16px; font-family: var(--font-sans); font-size: 15px; height: 44px; outline: none; transition: border-color 0.15s; }
.form-group textarea { height: auto; min-height: 100px; resize: vertical; }
.form-group input:focus, .form-group textarea:focus { border-color: var(--color-ink); }
.form-group input.error, .form-group textarea.error { border-color: var(--color-error); }
.field-error { font-size: 13px; color: var(--color-error); margin-top: 4px; display: none; }
.btn-primary { background: var(--color-primary); color: var(--color-on-primary); border: none; border-radius: var(--radius-md); padding: 10px 18px; height: 40px; font-family: var(--font-sans); font-size: 14px; font-weight: 500; cursor: pointer; transition: background 0.15s; display: inline-flex; align-items: center; gap: 8px; }
.btn-primary:hover { background: var(--color-primary-active); }
.btn-primary:disabled { opacity: 0.7; cursor: not-allowed; }
.form-success { display: none; background: #edf7f3; border: 1px solid #9fd5bf; border-radius: var(--radius-md); padding: 16px; font-size: 14px; color: var(--color-success); margin-top: 16px; }

.cookie-banner { position: fixed; bottom: 24px; left: 24px; right: 24px; max-width: 560px; background: var(--color-ink); color: var(--color-canvas); border-radius: var(--radius-lg); padding: 20px 24px; z-index: 999; display: none; }
.cookie-banner.visible { display: block; }
.cookie-banner p { font-size: 14px; line-height: 1.5; color: #c4c3bc; margin-bottom: 16px; }
.cookie-banner a { color: var(--color-canvas); text-decoration: underline; }
.cookie-actions { display: flex; gap: 10px; }
.btn-cookie-accept { background: var(--color-primary); color: var(--color-on-primary); border: none; border-radius: var(--radius-md); padding: 8px 16px; font-size: 14px; font-weight: 500; cursor: pointer; font-family: var(--font-sans); }
.btn-cookie-reject { background: transparent; color: var(--color-canvas); border: 1px solid rgba(255,255,255,0.25); border-radius: var(--radius-md); padding: 8px 16px; font-size: 14px; font-weight: 500; cursor: pointer; font-family: var(--font-sans); }

.site-footer { background: var(--color-canvas); border-top: 1px solid var(--color-hairline); padding: 64px 0 48px; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand p { font-size: 14px; color: var(--color-muted); line-height: 1.6; margin-top: 10px; max-width: 280px; }
.footer-logo { font-size: 16px; font-weight: 600; color: var(--color-ink); letter-spacing: -0.2px; }
.footer-logo span { color: var(--color-primary); }
.footer-col h4 { font-size: 13px; font-weight: 600; letter-spacing: 0.5px; text-transform: uppercase; color: var(--color-muted); margin-bottom: 16px; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a { font-size: 14px; color: var(--color-body); transition: color 0.15s; }
.footer-col ul li a:hover { color: var(--color-ink); }
.footer-bottom { border-top: 1px solid var(--color-hairline); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; }
.footer-bottom p { font-size: 13px; color: var(--color-muted); }
.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom-links a { font-size: 13px; color: var(--color-muted); }
.footer-bottom-links a:hover { color: var(--color-ink); }

.article-hero { padding: 60px 0 40px; border-bottom: 1px solid var(--color-hairline); }
.article-breadcrumb { font-size: 13px; color: var(--color-muted); margin-bottom: 20px; display: flex; align-items: center; gap: 6px; }
.article-breadcrumb a { color: var(--color-muted); }
.article-breadcrumb a:hover { color: var(--color-ink); }
.article-hero h1 { font-size: 42px; font-weight: 400; letter-spacing: -1px; color: var(--color-ink); line-height: 1.15; max-width: 720px; margin-bottom: 16px; }
.article-hero-meta { font-size: 14px; color: var(--color-muted); }
.article-body { padding: 60px 0 80px; }
.article-layout { display: grid; grid-template-columns: 1fr 280px; gap: 64px; align-items: start; }
.article-content h2 { font-size: 26px; font-weight: 400; letter-spacing: -0.325px; color: var(--color-ink); line-height: 1.25; margin-top: 40px; margin-bottom: 14px; }
.article-content h3 { font-size: 20px; font-weight: 600; color: var(--color-ink); margin-top: 28px; margin-bottom: 10px; }
.article-content p { font-size: 16px; color: var(--color-body); line-height: 1.7; margin-bottom: 16px; }
.article-content ul, .article-content ol { padding-left: 20px; margin-bottom: 16px; }
.article-content li { font-size: 15px; color: var(--color-body); line-height: 1.65; margin-bottom: 6px; }
.article-content figure { margin: 32px 0; }
.article-content figure img { width: 100%; border-radius: var(--radius-lg); border: 1px solid var(--color-hairline); }
.article-content figcaption { font-size: 13px; color: var(--color-muted); margin-top: 8px; font-family: var(--font-mono); }
.article-content .data-block { background: var(--color-surface-card); border: 1px solid var(--color-hairline); border-radius: var(--radius-lg); padding: 24px; margin: 24px 0; font-family: var(--font-mono); font-size: 13px; color: var(--color-ink); line-height: 1.6; }
.article-content .note-block { background: var(--color-surface-card); border-left: 3px solid var(--color-primary); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; padding: 16px 20px; margin: 24px 0; }
.article-content .note-block p { font-size: 14px; color: var(--color-body); margin-bottom: 0; }
.article-content .ref-list { background: var(--color-surface-card); border: 1px solid var(--color-hairline); border-radius: var(--radius-lg); padding: 24px; margin-top: 40px; }
.article-content .ref-list h3 { font-size: 14px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; color: var(--color-muted); margin-top: 0; margin-bottom: 14px; }
.article-content .ref-list ol { padding-left: 18px; }
.article-content .ref-list li { font-size: 13px; color: var(--color-muted); margin-bottom: 8px; }
.article-content .ref-list a { color: var(--color-body); text-decoration: underline; text-decoration-color: var(--color-hairline-strong); }

.article-sidebar { position: sticky; top: 80px; }
.sidebar-box { background: var(--color-surface-card); border: 1px solid var(--color-hairline); border-radius: var(--radius-lg); padding: 24px; margin-bottom: 20px; }
.sidebar-box h4 { font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; color: var(--color-muted); margin-bottom: 14px; }
.sidebar-toc { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.sidebar-toc a { font-size: 14px; color: var(--color-body); transition: color 0.15s; }
.sidebar-toc a:hover { color: var(--color-ink); }
.sidebar-related a { display: block; font-size: 14px; color: var(--color-body); padding: 8px 0; border-bottom: 1px solid var(--color-hairline-soft); transition: color 0.15s; }
.sidebar-related a:last-child { border-bottom: none; padding-bottom: 0; }
.sidebar-related a:hover { color: var(--color-ink); }

.page-hero { padding: 60px 0 40px; border-bottom: 1px solid var(--color-hairline); }
.page-hero h1 { font-size: 42px; font-weight: 400; letter-spacing: -1px; color: var(--color-ink); line-height: 1.15; margin-bottom: 12px; }
.page-hero p { font-size: 16px; color: var(--color-muted); }
.page-body { padding: 60px 0 80px; max-width: 760px; }
.page-body h2 { font-size: 26px; font-weight: 400; letter-spacing: -0.325px; color: var(--color-ink); margin-top: 40px; margin-bottom: 14px; }
.page-body h3 { font-size: 18px; font-weight: 600; color: var(--color-ink); margin-top: 24px; margin-bottom: 8px; }
.page-body p { font-size: 15px; color: var(--color-body); line-height: 1.7; margin-bottom: 14px; }
.page-body ul, .page-body ol { padding-left: 20px; margin-bottom: 14px; }
.page-body li { font-size: 15px; color: var(--color-body); line-height: 1.65; margin-bottom: 6px; }
.page-body a { color: var(--color-primary); text-decoration: underline; text-decoration-color: rgba(245,78,0,0.3); }

.disclaimer-bar { background: var(--color-surface-card); border-top: 1px solid var(--color-hairline); padding: 12px 0; }
.disclaimer-bar p { font-size: 12px; color: var(--color-muted-soft); text-align: center; line-height: 1.5; }

@media (max-width: 1024px) {
    .hero h1 { font-size: 42px; }
    .articles-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { position: static; }
    .facts-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-hamburger { display: flex; }
    .hero { padding: 48px 0; }
    .hero-inner { grid-template-columns: 1fr; gap: 32px; }
    .hero h1 { font-size: 32px; letter-spacing: -0.8px; }
    .hero-image img { height: 240px; }
    .articles-grid { grid-template-columns: 1fr; }
    .info-band-grid { grid-template-columns: 1fr; gap: 24px; }
    .section-header h2 { font-size: 28px; }
    .footer-inner { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
    .article-hero h1 { font-size: 28px; }
    .page-hero h1 { font-size: 30px; }
}
@media (max-width: 640px) {
    .contact-form { padding: 20px; }
    .cookie-banner { left: 12px; right: 12px; bottom: 12px; }
}