:root{--accent: #10b981;--accent-dark: #059669;--accent-light: #d1fae5;--text: #1f2937;--text-sec: #6b7280;--border: #e5e7eb;--surface: #ffffff;--bg: #f9fafb;--r: 12px;--rl: 16px;--mw: 1200px;--shl: 0 4px 12px rgba(0,0,0,.08);--fd: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--fb: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--fb);color:var(--text);background:var(--bg);line-height:1.6}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.header{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;backdrop-filter:blur(8px)}.header-inner{max-width:var(--mw);margin:0 auto;padding:16px 24px;display:flex;justify-content:space-between;align-items:center}.logo{font-size:1.4rem;font-weight:700;color:var(--text);text-decoration:none;display:flex;align-items:center;gap:8px}.logo:hover{text-decoration:none;color:var(--accent)}.nav{display:flex;gap:32px;align-items:center}.nav a{color:var(--text-sec);font-weight:500;font-size:.95rem;text-decoration:none;white-space:nowrap}.nav a:hover{color:var(--accent);text-decoration:none}.mobile-menu-btn{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer;padding:8px;color:var(--text)}@media(max-width:640px){.nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--surface);border-bottom:1px solid var(--border);flex-direction:column;gap:0;padding:16px 0}.nav.open{display:flex}.nav a{width:100%;padding:12px 24px;border-bottom:1px solid var(--border)}.nav a:last-child{border-bottom:none}.mobile-menu-btn{display:block}}.footer{background:var(--surface);border-top:1px solid var(--border);margin-top:80px;padding:40px 24px}.footer-inner{max-width:var(--mw);margin:0 auto;display:flex;justify-content:space-between;flex-wrap:wrap;gap:32px}.footer-col h3{font-size:.9rem;font-weight:600;margin-bottom:12px;color:var(--text)}.footer-col ul{list-style:none}.footer-col li{margin-bottom:8px}.footer-col a{color:var(--text-sec);font-size:.9rem;text-decoration:none}.footer-col a:hover{color:var(--accent)}.footer-bottom{max-width:var(--mw);margin:32px auto 0;padding-top:24px;border-top:1px solid var(--border);text-align:center;color:var(--text-sec);font-size:.85rem}.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:100px;font-weight:600;font-size:.95rem;text-decoration:none;transition:all .2s;cursor:pointer;border:none;font-family:var(--fb)}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-dark);text-decoration:none;transform:translateY(-1px);box-shadow:0 4px 12px #10b9814d}.btn-secondary{background:var(--surface);color:var(--text);border:1.5px solid var(--border)}.btn-secondary:hover{border-color:var(--accent);color:var(--accent);text-decoration:none}@media(min-width:641px){.nav{display:flex!important}}@media(max-width:768px){.header-inner{padding:12px 16px}.logo{font-size:1rem}.footer-inner{flex-direction:column;gap:24px}}@media(max-width:480px){.logo{font-size:.95rem}.logo span:first-child{font-size:1.3rem}}@media(max-width:380px){.logo{font-size:.85rem}}@media(min-width:641px)and (max-width:768px){.nav{gap:20px}.nav a{font-size:.85rem}}article{max-width:800px;margin:0 auto;padding:40px 24px}article header{margin-bottom:40px;padding-bottom:24px;border-bottom:1px solid var(--border)}article h1{font-size:2.5rem;font-weight:700;line-height:1.2;margin-bottom:16px;color:var(--text)}article time{color:var(--text-sec);font-size:.95rem}.prose{font-size:1.125rem;line-height:1.75;color:var(--text)}.prose h2{font-size:2rem;font-weight:700;margin-top:48px;margin-bottom:24px;line-height:1.3;color:var(--text)}.prose h3{font-size:1.5rem;font-weight:600;margin-top:32px;margin-bottom:16px;line-height:1.4;color:var(--text)}.prose h4{font-size:1.25rem;font-weight:600;margin-top:24px;margin-bottom:12px;line-height:1.5}.prose p{margin-bottom:20px}.prose ul,.prose ol{margin-bottom:20px;padding-left:28px}.prose li{margin-bottom:8px}.prose strong{font-weight:600;color:var(--text)}.prose a{color:var(--accent);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:2px}.prose a:hover{color:var(--accent-dark)}.prose blockquote{border-left:4px solid var(--accent);padding-left:20px;margin:24px 0;font-style:italic;color:var(--text-sec)}.prose code{background:var(--bg);padding:2px 6px;border-radius:4px;font-size:.9em;font-family:Courier New,monospace}.prose pre{background:var(--bg);padding:16px;border-radius:var(--r);overflow-x:auto;margin-bottom:20px}.prose img{max-width:100%;height:auto;border-radius:var(--r);margin:24px 0}.prose table{width:100%;border-collapse:collapse;margin:24px 0;font-size:.95rem}.prose th,.prose td{padding:12px;text-align:left;border-bottom:1px solid var(--border)}.prose th{font-weight:600;background:var(--bg)}.prose hr{border:none;border-top:1px solid var(--border);margin:40px 0}@media(max-width:768px){article h1{font-size:2rem}.prose{font-size:1.0625rem}.prose h2{font-size:1.75rem}.prose h3{font-size:1.375rem}}@media(max-width:480px){article{padding:24px 16px}article h1{font-size:1.75rem}.prose{font-size:1rem}.prose h2{font-size:1.5rem;margin-top:32px}.prose h3{font-size:1.25rem;margin-top:24px}}