:root{--color-bg: #ffffff;--color-surface: #f7f9fc;--color-text: #1a2331;--color-muted: #5a6577;--color-accent: #0a6cf1;--color-accent-strong: #0848a8;--color-accent-soft: #e8f1ff;--color-border: #e2e8f0;--color-fields-1: #0a6cf1;--color-fields-2: #f59e0b;--color-fields-3: #10b981;--color-fields-4: #d97706;--hero-gradient: linear-gradient(135deg, #1e3a8a 0%, #0a6cf1 55%, #4f8df5 100%);--footer-gradient: linear-gradient(135deg, #1e3a8a 0%, #0a6cf1 100%);--max-width: 920px;--font-sans: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", "Meiryo", system-ui, -apple-system, "Segoe UI", sans-serif}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-height, 5rem) + .5rem)}body{margin:0;font-family:var(--font-sans);color:var(--color-text);background:var(--color-bg);line-height:1.8;-webkit-font-smoothing:antialiased}.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 1.25rem}.site-header{position:sticky;top:0;z-index:10;background:linear-gradient(180deg,#fffffff5,#e8f1ffeb);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--color-border)}.header-inner{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;padding-top:.9rem;padding-bottom:.9rem;flex-wrap:wrap}.header-logo{display:inline-flex;align-items:center;flex-shrink:0;line-height:0}.header-logo img{height:40px;width:auto;display:block}@media(max-width:640px){.header-logo img{height:32px}}.brand{display:flex;flex-direction:column;text-decoration:none;color:var(--color-text);margin-right:auto}.brand-mark{font-weight:700;font-size:1.05rem;letter-spacing:.02em;color:var(--color-accent-strong)}.brand-sub{font-size:.78rem;color:var(--color-muted)}.site-nav{display:flex;gap:1.2rem;flex-wrap:wrap}.site-nav a{color:var(--color-muted);text-decoration:none;font-size:.92rem;font-weight:600;padding:.25rem .1rem;border-bottom:2px solid transparent;transition:color .15s 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pre{background:var(--color-surface);padding:1rem;border-radius:8px;overflow-x:auto}.prose hr{border:0;border-top:1px solid var(--color-border);margin:2.5rem 0}.prose table{width:100%;border-collapse:separate;border-spacing:0;margin:1.5rem 0;border-radius:10px;overflow:hidden;box-shadow:0 0 0 1px var(--color-border)}.prose th,.prose td{padding:.7rem 1rem;text-align:left;border:none;border-bottom:1px solid var(--color-border)}.prose tbody tr:last-child td{border-bottom:none}.prose th{background:var(--color-accent-soft);color:var(--color-accent-strong);font-weight:700}.prose tbody tr:nth-child(2n) td{background:var(--color-surface)}.site-footer{border-top:none;background:var(--footer-gradient);padding:2rem 0;color:#ffffffeb;font-size:.9rem;text-align:center}@media(max-width:640px){.prose>h1{padding:1.8rem 1.3rem 1rem;font-size:1.4rem}.prose>h1+p{padding:0 1.3rem 1.6rem}.prose>h1+p strong{font-size:1.05rem}}