:root{--color-bg:#080f1d;--color-paper:#050c19;--color-surface:#101d32;--color-surface-alt:#172840;--color-ink:#f1f6ff;--color-text:var(--color-ink);--color-muted:#a6b5ca;--color-border:#263c57;--color-rule:#3b5876;--color-accent:#7bdcfa;--color-primary:var(--color-accent);--color-primary-hover:#b4edff;--color-on-primary:#061727;--color-gold:var(--color-accent);--color-gold-deep:var(--color-accent);--color-gold-light:#b4edff;--band-bg:#050b16;--band-text:#f1f6ff;--band-muted:#9bacbf;--font-sans:"Space Grotesk", "Noto Sans JP", "Hiragino Sans", system-ui, sans-serif;--font-serif:var(--font-sans);--font-display:var(--font-sans);--font-mono:"IBM Plex Mono", "Consolas", monospace;--radius-sm:2px;--radius:4px;--max-w:86rem;--gutter:clamp(1rem, 5vw, 5rem);color-scheme:dark}*,:before,:after{box-sizing:border-box}html{font-family:var(--font-sans);-webkit-text-size-adjust:100%;scroll-behavior:smooth;font-feature-settings:"palt";scroll-padding-top:10rem;font-size:16px;line-height:1.85}body{background:var(--color-bg);color:var(--color-text);flex-direction:column;min-height:100dvh;margin:0;display:flex}main{flex:1;min-width:0}img,svg{max-width:100%;height:auto}a{color:var(--color-primary);text-underline-offset:.2em;text-decoration-thickness:1px}a:hover{color:var(--color-gold-deep)}:focus-visible{outline:3px solid var(--focus-color,var(--color-primary));outline-offset:4px}.skip-link{top:.75rem;left:var(--gutter);z-index:20;background:var(--color-paper);min-height:44px;color:var(--color-ink);border:1px solid var(--color-primary);border-radius:var(--radius-sm);align-items:center;padding:.5rem 1rem;display:inline-flex;position:fixed;transform:translateY(calc(-100% - 1rem))}.skip-link:focus{transform:translateY(0)}h1,h2,h3{font-family:var(--font-serif);letter-spacing:-.025em;text-wrap:balance;margin:0 0 .7em;font-weight:600;line-height:1.35}h1{font-size:clamp(1.9rem,4vw,2.6rem)}h2{margin-top:2.4em;font-size:clamp(1.4rem,2.6vw,1.8rem)}h3{margin-top:1.6em;font-size:1.2rem}p{margin:0 0 1em}p,li,dd,dt,figcaption,blockquote{text-wrap:pretty}:lang(ja) :is(p,li,dd,dt,h1,h2,h3,figcaption,blockquote),:lang(ja):is(p,li,dd,dt,h1,h2,h3){word-break:auto-phrase}code{font-family:var(--font-mono);background:var(--color-surface-alt);border-radius:var(--radius-sm);padding:.1em .4em;font-size:.92em}pre{background:var(--color-surface-alt);border:1px solid var(--color-border);border-radius:var(--radius);padding:1rem 1.25rem;overflow-x:auto}pre code{background:0 0;padding:0}.container{width:min(100% - var(--gutter) * 2, var(--max-w));margin-inline:auto}.section{padding-block:clamp(2.5rem,6vw,5rem)}.prose{max-width:44rem}.prose ul,.prose ol{padding-left:1.4em}.prose li{margin-bottom:.4em}.kicker{font-family:var(--font-mono);letter-spacing:.06em;color:var(--color-gold-deep);align-items:center;gap:.75rem;margin-bottom:.75rem;font-size:.7rem;display:flex}.kicker:before{content:"";background:var(--color-gold);width:.4rem;height:.4rem}.prose h2{border-bottom:1px solid var(--color-rule);padding-bottom:.4em;position:relative}.prose h2:after{content:"";background:var(--color-gold);width:3rem;height:1px;position:absolute;bottom:-1px;left:0}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:1.5rem 1.75rem}.grid{grid-template-columns:repeat(auto-fit,minmax(16rem,1fr));gap:1.25rem;display:grid}.button{border-radius:var(--radius-sm);min-height:44px;font-family:var(--font-sans);letter-spacing:.01em;border:1px solid #0000;align-items:center;gap:.4em;padding:.85em 1.75em;font-size:.95rem;font-weight:600;text-decoration:none;transition:background-color .15s,color .15s,border-color .15s;display:inline-flex}.button--primary{background:var(--color-primary);border-color:var(--color-primary);color:var(--color-on-primary)}.button--primary:hover{background:var(--color-primary-hover);border-color:var(--color-primary-hover);color:var(--color-on-primary)}.button--ghost{border-color:var(--color-rule);color:var(--color-ink);background:0 0}.button--ghost:hover{border-color:var(--color-gold-deep);color:var(--color-gold-deep)}.table{border-collapse:collapse;background:var(--color-surface);border-top:1px solid var(--color-ink);border-bottom:1px solid var(--color-ink);width:100%}.table th,.table td{text-align:left;border-bottom:1px solid var(--color-border);vertical-align:top;padding:.9rem 1.1rem}.table th{font-family:var(--font-serif);letter-spacing:.12em;color:var(--color-muted);white-space:nowrap;font-size:.9rem;font-weight:600}.table tr:last-child td{border-bottom:none}.table-wrap{overflow-x:auto}.badge{border:1px solid var(--color-gold);border-radius:var(--radius-sm);font-family:var(--font-serif);letter-spacing:.12em;color:var(--color-gold-deep);background:var(--color-surface);padding:.1em .7em;font-size:.8em;display:inline-block}.muted{color:var(--color-muted)}h1:lang(en),h2:lang(en),h3:lang(en),.button:lang(en),.table th:lang(en),.badge:lang(en){letter-spacing:.02em}.kicker:lang(en){letter-spacing:.04em}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition:none!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}