:root{--color-bg:#fff;--color-bg-subtle:#f7f8fc;--color-text-primary:#1a1f36;--color-text-secondary:#4b5268;--color-text-muted:#8b90a3;--color-accent:#3b82f6;--color-accent-hover:#2563eb;--color-accent-light:#eff6ff;--color-border:#e5e7f0}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--color-bg);color:var(--color-text-secondary);font-family:Inter,Zen Kaku Gothic New,sans-serif;font-size:16px;line-height:1.75}a{color:var(--color-accent);text-decoration:none}a:hover{color:var(--color-accent-hover);text-decoration:underline}h1,h2,h3{color:var(--color-text-primary);font-weight:700;line-height:1.3}.container{max-width:720px;margin:0 auto;padding:0 24px}.site-header{border-bottom:1px solid var(--color-border);background:var(--color-bg)}.site-header-inner{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;max-width:720px;margin:0 auto;padding:20px 24px;display:flex}.site-logo{color:var(--color-text-primary);font-size:20px;font-weight:700}.site-nav{gap:20px;font-size:14px;display:flex}.site-nav a{color:var(--color-text-secondary)}.site-footer{border-top:1px solid var(--color-border);color:var(--color-text-muted);margin-top:64px;padding:32px 0 48px;font-size:13px}.card{border:1px solid var(--color-border);background:var(--color-bg-subtle);border-radius:16px;padding:24px}.card+.card{margin-top:16px}.badge{background:var(--color-accent-light);color:var(--color-accent-hover);border-radius:999px;padding:4px 10px;font-size:12px;font-weight:600;display:inline-block}.meta{color:var(--color-text-muted);font-size:13px}.article-body h2{margin-top:40px;font-size:24px}.article-body h3{margin-top:28px;font-size:19px}.article-body p{margin:16px 0}.article-body img{border-radius:12px;max-width:100%}