.page{min-height:100vh;max-width:720px;margin:0 auto;padding:2rem 1.5rem 3rem}.header{text-align:center;padding:2rem 0 2.5rem;border-bottom:1px solid var(--border)}.title{margin:0;font-size:2rem;font-weight:700;letter-spacing:-.02em;color:var(--text)}.subtitle{margin:.5rem 0 0;font-size:1.25rem;color:var(--text-muted)}.subtitle-en{font-size:1rem;opacity:.85}.updated{margin:1rem 0 0;font-size:.875rem;color:var(--text-muted)}.content{padding:2rem 0}.intro{font-size:1.05rem;color:var(--text-muted);margin:0 0 .75rem;padding:1rem 1.25rem;background:var(--surface);border-radius:10px;border-left:4px solid var(--accent)}.intro-en{margin:0 0 2rem;padding:1rem 1.25rem;font-size:.95rem;opacity:.9}.section{margin-bottom:2rem}.section-title{margin:0 0 .75rem;font-size:1.125rem;font-weight:600;color:var(--accent)}.section-content{margin:0;font-size:.95rem;color:var(--text);line-height:1.7;white-space:pre-line}.section-title-en{margin-top:1.5rem;font-size:1rem;color:var(--text-muted)}.section-content-en{margin-top:.5rem;font-size:.9rem;color:var(--text-muted);line-height:1.65}.footer{padding:2rem 0 0;border-top:1px solid var(--border);text-align:center;font-size:.875rem;color:var(--text-muted)}.footer-en{margin:.25rem 0 0;font-size:.8rem;opacity:.8}@media (min-width: 640px){.page{padding:3rem 2rem 4rem}.title{font-size:2.5rem}.section-title{font-size:1.25rem}.section-content{font-size:1rem}}*,*:before,*:after{box-sizing:border-box}:root{--bg: #0f1419;--surface: #1a2332;--text: #e6edf3;--text-muted: #8b949e;--accent: #58a6ff;--border: #30363d;--font-mono: "Noto Sans Mongolian", system-ui, sans-serif}html{font-size:16px;scroll-behavior:smooth}body{margin:0;min-height:100vh;font-family:var(--font-mono);background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}#root{min-height:100vh}