.nav-en{font-weight:400;opacity:.6;font-size:.75rem;margin-left:.2rem}.nav-actions{display:flex;align-items:center;gap:.75rem;margin-left:auto}.lang-toggle{font-size:.75rem;font-weight:600;padding:.2rem .5rem;border:1px solid var(--color-border);border-radius:4px;color:var(--color-text-muted)}.lang-toggle:hover{border-color:var(--color-accent);color:var(--color-accent)}.rss-link{font-size:1rem;opacity:.5}.rss-link:hover{opacity:1}.breadcrumb-bar{max-width:var(--max-width);margin:0 auto;padding:.75rem 1.5rem}.breadcrumb{font-size:.8rem;color:var(--color-text-muted);display:flex;align-items:center;gap:.35rem;flex-wrap:wrap}.breadcrumb a{color:var(--color-text-muted)}.breadcrumb a:hover{color:var(--color-accent)}.bc-sep{opacity:.4;font-size:.75rem}.bc-current{color:var(--color-text);font-weight:500}.footer-inner{max-width:var(--max-width);margin:0 auto;padding:0 1.5rem}.footer-cols{display:flex;gap:3rem;justify-content:center;margin-bottom:1.5rem}.footer-col{display:flex;flex-direction:column;gap:.35rem;font-size:.85rem}.footer-col strong{font-size:.8rem;text-transform:uppercase;letter-spacing:.04em;color:var(--color-text-muted);margin-bottom:.25rem}.footer-col a{color:var(--color-text-muted)}.footer-col a:hover{color:var(--color-accent)}.footer-site{font-size:.8rem;color:var(--color-text-muted);margin-bottom:.25rem}.footer-tagline{font-size:.75rem;color:var(--color-text-muted);opacity:.7}footer{text-align:center;padding:2.5rem 0;color:var(--color-text-muted);border-top:1px solid var(--color-border);margin-top:4rem}.reading-time{display:inline-block;font-size:.8rem;padding:.15rem .5rem;background:var(--color-bg);border:1px solid var(--color-border);border-radius:4px;color:var(--color-text-muted)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--color-bg: #fafaf9;--color-surface: #ffffff;--color-text: #1c1917;--color-text-muted: #78716c;--color-accent: #d97706;--color-accent-hover: #b45309;--color-border: #e7e5e4;--color-card-hover: #f5f5f4;--font-sans: "Segoe UI", system-ui, -apple-system, sans-serif;--font-mono: "SF Mono", "Cascadia Code", monospace;--max-width: 800px;--radius: 8px}html{font-family:var(--font-sans);color:var(--color-text);background:var(--color-bg);line-height:1.6}body{min-height:100vh}a{color:var(--color-accent);text-decoration:none;transition:color .2s}a:hover{color:var(--color-accent-hover)}img{max-width:100%;height:auto}.container{max-width:var(--max-width);margin:0 auto;padding:0 1.5rem}nav{padding:1.25rem 0;border-bottom:1px solid var(--color-border);margin-bottom:3rem}.nav-inner{max-width:var(--max-width);margin:0 auto;padding:0 1.5rem;display:flex;align-items:center;gap:2rem}.nav-brand{font-size:1.25rem;font-weight:700;color:var(--color-text);letter-spacing:-.02em}.nav-brand:hover{color:var(--color-accent)}.nav-links{display:flex;gap:1.25rem}.nav-links a{font-size:.9rem;color:var(--color-text-muted);font-weight:500}.nav-links a:hover,.nav-links a[aria-current]{color:var(--color-accent)}.column-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:1.5rem;margin:2rem 0 3rem}.column-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:2rem 1.5rem;transition:all .2s;display:block;color:inherit;text-align:center}.column-card:hover{border-color:var(--color-accent);background:var(--color-card-hover);transform:translateY(-2px)}.column-card .column-icon{font-size:2rem;display:block;margin-bottom:1rem}.column-card h2{font-size:1.3rem;font-weight:700;margin-bottom:.75rem}.column-card p{color:var(--color-text-muted);font-size:.925rem;line-height:1.5}.column-card .nav-en{font-weight:400;opacity:.5;font-size:.75rem}.home-footer{text-align:center;padding:2rem 0;margin-top:2rem}.home-footer a{font-weight:600}@media(max-width:640px){.column-grid{grid-template-columns:1fr}}.hero{text-align:center;padding:4rem 0 3rem}.hero h1{font-size:2.5rem;font-weight:800;letter-spacing:-.03em;line-height:1.15;margin-bottom:1rem}.hero .subtitle{font-size:1.1rem;color:var(--color-text-muted);max-width:600px;margin:0 auto 2rem;line-height:1.5}.hero .tagline{font-size:.85rem;color:var(--color-accent);font-weight:600;text-transform:uppercase;letter-spacing:.08em;margin-bottom:.75rem}.card-grid{display:grid;gap:1.5rem;margin:2rem 0 4rem}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:1.5rem;transition:all .2s;display:block;color:inherit}.card:hover{border-color:var(--color-accent);background:var(--color-card-hover);transform:translateY(-1px)}.card-meta{font-size:.8rem;color:var(--color-text-muted);margin-bottom:.5rem;display:flex;gap:.75rem;align-items:center}.card h2{font-size:1.25rem;font-weight:700;margin-bottom:.5rem;line-height:1.3}.card p{color:var(--color-text-muted);font-size:.925rem;line-height:1.5}.card-tags{display:flex;gap:.5rem;margin-top:.75rem;flex-wrap:wrap}.tag{font-size:.75rem;padding:.15rem .6rem;background:var(--color-bg);border:1px solid var(--color-border);border-radius:99px;color:var(--color-text-muted)}.card-badge{font-size:.7rem;font-weight:600;padding:.15rem .5rem;border-radius:4px;background:#fef3c7;color:#92400e}.section-header{display:flex;align-items:baseline;justify-content:space-between;margin:3rem 0 1rem}.section-header h2{font-size:1.5rem;font-weight:700}.section-header a{font-size:.85rem;font-weight:500}.content-page{max-width:680px;margin:0 auto;padding:0 1.5rem 4rem}.content-page h1{font-size:2rem;font-weight:800;line-height:1.2;margin-bottom:.5rem}.content-page .meta{color:var(--color-text-muted);font-size:.9rem;margin-bottom:2rem;padding-bottom:1.5rem;border-bottom:1px solid var(--color-border)}.content-page h2{font-size:1.35rem;font-weight:700;margin:2rem 0 .75rem}.content-page h3{font-size:1.1rem;font-weight:600;margin:1.5rem 0 .5rem}.content-page p{margin-bottom:1rem}.content-page ul,.content-page ol{margin-bottom:1rem;padding-left:1.5rem}.content-page li{margin-bottom:.25rem}.content-page table{width:100%;border-collapse:collapse;margin:1.5rem 0;font-size:.9rem}.content-page th,.content-page td{padding:.5rem .75rem;border:1px solid var(--color-border);text-align:left}.content-page th{background:var(--color-bg);font-weight:600}.content-page .cta-box{margin-top:3rem;padding:1.5rem;background:#fffbeb;border:1px solid #fde68a;border-radius:var(--radius);text-align:center}.content-page .cta-box a{display:inline-block;background:var(--color-accent);color:#fff;font-weight:600;padding:.6rem 1.5rem;border-radius:var(--radius);margin-top:.75rem}.content-page .cta-box a:hover{background:var(--color-accent-hover)}footer{text-align:center;padding:2rem 0;color:var(--color-text-muted);font-size:.8rem;border-top:1px solid var(--color-border);margin-top:4rem}.page-header{margin-bottom:2.5rem}.page-header h1{font-size:2rem;font-weight:800}.page-header p{color:var(--color-text-muted);margin-top:.5rem}