*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
:root {
    --black: #0a0a0a; --white: #ffffff;
    --gray-100: #f5f5f5; --gray-200: #e8e8e8;
    --gray-400: #999; --gray-600: #555;
    --font-serif: 'Playfair Display', Georgia, serif;
    --font-sans: 'Inter', system-ui, sans-serif;
    --max-w: 720px; --pad: clamp(24px, 5vw, 48px);
}
html { scroll-behavior: smooth; }
body { background: var(--white); color: var(--black); font-family: var(--font-sans); font-size: 18px; line-height: 1.8; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }

.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: rgba(255,255,255,0.96); backdrop-filter: blur(8px); border-bottom: 1px solid var(--gray-200); display: flex; align-items: center; justify-content: space-between; padding: 18px var(--pad); }
.nav-home { font-family: var(--font-serif); font-weight: 600; font-size: 17px; }
.nav-back { font-size: 13px; color: var(--gray-400); font-weight: 500; letter-spacing: 0.5px; border-bottom: 1px solid transparent; transition: all 0.2s; }
.nav-back:hover { color: var(--black); border-color: var(--black); }

.article-wrap { max-width: var(--max-w); margin: 0 auto; padding: 120px var(--pad) 100px; }

.article-meta { display: flex; align-items: center; gap: 16px; margin-bottom: 28px; }
.article-tag { font-size: 11px; font-weight: 600; letter-spacing: 1.5px; text-transform: uppercase; background: var(--black); color: var(--white); padding: 4px 10px; }
.article-date { font-size: 13px; color: var(--gray-400); }
.article-read-time { font-size: 13px; color: var(--gray-400); }

.article-title { font-family: var(--font-serif); font-size: clamp(32px, 5vw, 52px); font-weight: 900; line-height: 1.1; letter-spacing: -1px; margin-bottom: 20px; }
.article-subtitle { font-size: 19px; color: var(--gray-600); line-height: 1.65; font-weight: 300; margin-bottom: 48px; padding-bottom: 48px; border-bottom: 1px solid var(--gray-200); }

.article-body h2 { font-family: var(--font-serif); font-size: 26px; font-weight: 700; margin: 48px 0 16px; letter-spacing: -0.3px; }
.article-body p { color: var(--gray-600); margin-bottom: 24px; font-weight: 300; font-size: 17px; }
.article-body strong { color: var(--black); font-weight: 600; }
.article-body ul, .article-body ol { padding-left: 20px; margin-bottom: 24px; color: var(--gray-600); font-weight: 300; font-size: 17px; }
.article-body li { margin-bottom: 8px; line-height: 1.7; }
.article-body code { font-family: 'Courier New', monospace; background: var(--gray-100); padding: 2px 8px; font-size: 14px; color: var(--black); border: 1px solid var(--gray-200); }
.article-body blockquote { border-left: 3px solid var(--black); padding-left: 24px; margin: 32px 0; font-family: var(--font-serif); font-size: 20px; font-style: italic; color: var(--black); line-height: 1.6; }

.article-footer { margin-top: 64px; padding-top: 40px; border-top: 1px solid var(--gray-200); display: flex; justify-content: space-between; align-items: center; flex-wrap: gap; gap: 16px; }
.article-author { font-size: 14px; color: var(--gray-400); }
.article-author strong { color: var(--black); }
.back-link { font-size: 13px; font-weight: 600; border-bottom: 1px solid var(--black); padding-bottom: 2px; }

footer { background: var(--black); padding: 24px var(--pad); display: flex; justify-content: space-between; font-size: 12px; color: var(--gray-400); }
footer a { color: var(--gray-400); transition: color 0.2s; }
footer a:hover { color: var(--white); }