:root{--bg: #f3f4f6;--bg-elevated: #ffffff;--bg-subtle: #eef0f3;--bg-card: #ffffff;--text: #1a1a2e;--text-muted: #5b6472;--border: #e5e7eb;--accent: #2563eb;--accent-hover: #1d4ed8;--accent-soft: #dbeafe;--accent-green: #16c47f;--code-bg: #f4f4f6;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, Roboto, Helvetica, Arial, sans-serif;--font-mono: "SFMono-Regular", "Consolas", "Liberation Mono", Menlo, monospace;--maxw: 720px;--maxw-wide: 1200px;--radius: 14px;--shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 8px 24px rgba(16, 24, 40, .08)}@media(prefers-color-scheme:dark){:root{--bg: #0d0f15;--bg-elevated: #12151d;--bg-subtle: #161923;--bg-card: #161a24;--text: #e7e9ee;--text-muted: #9aa3b2;--border: #262a36;--accent: #60a5fa;--accent-hover: #93c5fd;--accent-soft: #1e293b;--accent-green: #16c47f;--code-bg: #1b1f2a;--shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .4)}}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:var(--font-sans);background:var(--bg);color:var(--text);line-height:1.7;font-size:17px;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;display:flex;flex-direction:column;min-height:100vh}.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:20px}.container-wide{width:100%;max-width:var(--maxw-wide);margin-inline:auto;padding-inline:24px}main{flex:1 0 auto;padding-block:32px 64px}a{color:var(--accent);text-decoration:none;transition:color .15s ease}a:hover{color:var(--accent-hover);text-decoration:underline}h1,h2,h3{line-height:1.25;font-weight:700;color:var(--text)}h1{font-size:2rem;margin-block:0 .5rem}h2{font-size:1.4rem;margin-block:2rem .75rem}img{max-width:100%;height:auto;border-radius:var(--radius)}code{font-family:var(--font-mono);font-size:.9em;background:var(--code-bg);padding:.15em 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108px);overflow-y:auto}@media(max-width:1000px){.article-layout{grid-template-columns:minmax(0,760px)}.article-layout__toc{position:static;max-height:none;margin-inline:auto;width:100%;padding:16px 18px;background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius)}}.article-header{margin-bottom:2rem}.article-cat{display:inline-block;font-weight:700;font-size:.85rem;margin-bottom:12px}.article-cat:hover{text-decoration:underline}.article-header h1{font-size:clamp(1.9rem,3.5vw,2.5rem);letter-spacing:-.02em;margin:0 0 12px}.article-lead{font-size:1.18rem;color:var(--text-muted);line-height:1.6;margin:0 0 24px}.article-byline{display:flex;align-items:center;gap:12px;padding-top:20px;border-top:1px solid var(--border)}.article-byline__col{display:flex;flex-direction:column;line-height:1.35}.article-byline__author{font-weight:600;color:var(--text)}.article-byline__meta{font-size:.86rem;color:var(--text-muted)}.article-byline__dot{opacity:.5;margin:0 5px}.share-btn{margin-left:auto;display:inline-flex;align-items:center;gap:7px;border:1px solid var(--border);background:var(--bg-card);color:var(--text-muted);font-family:inherit;font-size:.85rem;font-weight:600;padding:7px 13px;border-radius:999px;cursor:pointer;transition:color .15s ease,border-color .15s ease,background .15s ease}.share-btn:hover{color:var(--accent);border-color:color-mix(in srgb,var(--accent) 40%,var(--border));background:var(--bg-subtle)}.article-hero{width:100%;margin:8px 0 28px}.article-tags{margin-top:32px}.prose{font-size:1.06rem;line-height:1.8}.prose>*+*{margin-top:1.2rem}.prose h2{font-size:1.5rem;margin-top:2.4rem;padding-top:.4rem;letter-spacing:-.01em}.prose h3{font-size:1.2rem;margin-top:1.9rem}.prose :is(h2,h3,h4){scroll-margin-top:88px}.prose a{color:var(--accent);text-decoration:underline;text-underline-offset:2px;text-decoration-thickness:1px;text-decoration-color:color-mix(in srgb,var(--accent) 45%,transparent)}.prose a:hover{text-decoration-color:var(--accent)}.prose ul,.prose ol{padding-left:1.4rem}.prose li+li{margin-top:.4rem}.prose li::marker{color:var(--text-muted)}.prose img{display:block;margin-inline:auto;border:1px solid var(--border)}.prose table{width:100%;border-collapse:collapse;font-size:.95rem;display:block;overflow-x:auto}.prose th,.prose td{border:1px solid var(--border);padding:8px 12px;text-align:left}.prose th{background:var(--bg-subtle);font-weight:700}.prose blockquote{font-size:1.02rem}.notice{padding:10px 14px;border-radius:8px;background:var(--bg-subtle);border:1px dashed var(--border);color:var(--text-muted);font-size:.9rem;margin-bottom:1.5rem}.site-footer{flex-shrink:0;border-top:1px solid var(--border);color:var(--text-muted);font-size:.9rem;padding-block:24px}.site-footer .inner{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}@media(max-width:560px){body{font-size:16px}.hero h1{font-size:2rem}.site-header .inner{flex-wrap:wrap}}