:root{--bg: #ffffff;--bg-subtle: #f5f7f6;--bg-hero: #0f2419;--fg: #1a1d23;--fg-muted: #59636e;--border: #e2e7e4;--accent: #15603a;--accent-strong: #0f4a2c;--accent-fg: #ffffff;--max-width: 1040px;--prose-width: 760px;--radius: 10px;--shadow: 0 1px 2px rgba(16, 33, 25, .04), 0 6px 20px rgba(16, 33, 25, .05)}@media(prefers-color-scheme:dark){:root{--bg: #0e1113;--bg-subtle: #14181a;--bg-hero: #0c1c14;--fg: #e7eaee;--fg-muted: #9aa4ab;--border: #232a2c;--accent: #43c883;--accent-strong: #5bd493;--accent-fg: #0b0f0d;--shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 6px 20px rgba(0, 0, 0, .35)}}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,Hiragino Kaku Gothic ProN,Hiragino Sans,Noto Sans JP,Meiryo,sans-serif;line-height:1.85;font-size:16px;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}a{color:var(--accent);text-underline-offset:2px}a:hover{text-decoration:underline}h1,h2,h3{line-height:1.45;font-weight:700;letter-spacing:.01em}h1{font-size:1.75rem;margin:0 0 .5em}h3{font-size:1.05rem;margin:1.6em 0 .5em}.mark{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-weight:700}.site-header{position:sticky;top:0;z-index:10;border-bottom:1px solid var(--border);background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:saturate(1.4) blur(8px)}.site-header .container{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:14px;padding-bottom:14px;flex-wrap:wrap}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--fg)}.brand .brand-mark{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:8px;background:var(--accent);color:var(--accent-fg);font-size:.95rem}.brand .brand-name{font-weight:700;font-size:1.02rem;line-height:1.2}.brand .brand-name span{display:block;font-size:.66rem;font-weight:500;color:var(--fg-muted);letter-spacing:.1em;margin-top:2px}.site-nav{display:flex;gap:20px;flex-wrap:wrap;font-size:.9rem}.site-nav a{color:var(--fg-muted);text-decoration:none;padding:4px 0;border-bottom:2px solid transparent}.site-nav a:hover{color:var(--fg)}.site-nav a[aria-current=page]{color:var(--accent);border-bottom-color:var(--accent)}main{display:block}.section{padding:60px 0}.section--subtle{background:var(--bg-subtle)}.section-head{margin-bottom:28px}.section-head .eyebrow{display:block;font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);font-weight:700;margin-bottom:6px}.section-head h2{font-size:1.4rem;margin:0}h2{font-size:1.4rem}.hero{position:relative;background:radial-gradient(120% 140% at 85% -10%,rgba(67,200,131,.14),transparent 55%),var(--bg-hero);color:#eef4f0;overflow:hidden;border-bottom:1px solid var(--border)}.hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:40px 40px;mask-image:linear-gradient(180deg,rgba(0,0,0,.5),transparent 80%);pointer-events:none}.hero .container{position:relative;padding-top:76px;padding-bottom:76px}.hero .hero-mark{font-size:.8rem;letter-spacing:.2em;color:#7fdca8;margin-bottom:18px}.hero h1{font-size:clamp(1.7rem,4.5vw,2.5rem);margin:0 0 12px;color:#fff}.hero .hero-en{color:#9fc9b3;font-size:.95rem;letter-spacing:.14em;margin:0}.biz-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px}.biz-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.section--subtle .biz-card{background:var(--bg)}.biz-card .biz-icon{display:inline-grid;place-items:center;width:44px;height:44px;border-radius:10px;background:color-mix(in srgb,var(--accent) 12%,transparent);color:var(--accent);margin-bottom:14px}.biz-card h3{margin:0 0 8px;font-size:1.08rem}.biz-card .biz-summary{color:var(--fg-muted);margin:0;font-size:.92rem;line-height:1.8}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin:0;padding:0;list-style:none}.cards a{display:block;padding:20px 22px;border:1px solid var(--border);border-radius:var(--radius);text-decoration:none;color:var(--fg);background:var(--bg);transition:border-color .15s ease,transform .15s ease}.cards a:hover{border-color:var(--accent);transform:translateY(-1px);text-decoration:none}.cards strong{display:block;color:var(--accent);margin-bottom:4px}.cards span{font-size:.85rem;color:var(--fg-muted)}.info-table{width:100%;border-collapse:collapse;margin:.5em 0;font-size:.95rem}.info-table th,.info-table td{text-align:left;vertical-align:top;padding:14px 16px;border-bottom:1px solid var(--border)}.info-table th{width:30%;white-space:nowrap;color:var(--fg-muted);font-weight:600}.info-table tr:first-child th,.info-table tr:first-child td{border-top:1px solid var(--border)}@media(max-width:560px){.info-table,.info-table tbody,.info-table tr,.info-table th,.info-table td{display:block;width:100%}.info-table th{border-bottom:none;padding-bottom:0}.info-table tr:first-child td{border-top:none}}.note{font-size:.85rem;color:var(--fg-muted)}.lead{color:var(--fg-muted);font-size:1.05rem}.tags{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:.5em 0 0}.tags li{padding:5px 12px;border:1px solid var(--border);border-radius:999px;font-size:.85rem;color:var(--fg-muted);background:var(--bg)}.site-footer{border-top:1px solid var(--border);background:var(--bg-subtle);color:var(--fg-muted);font-size:.85rem}.site-footer .container{padding-top:40px;padding-bottom:40px;display:grid;grid-template-columns:1.4fr 1fr;gap:24px 40px}.site-footer .f-brand{font-weight:700;color:var(--fg)}.site-footer .f-addr{margin:6px 0 0;line-height:1.7}.site-footer nav{display:flex;flex-direction:column;gap:8px}.site-footer a{color:var(--fg-muted);text-decoration:none}.site-footer a:hover{color:var(--accent)}.site-footer .f-copy{grid-column:1 / -1;border-top:1px solid var(--border);padding-top:16px;font-size:.8rem}@media(max-width:560px){.site-footer .container{grid-template-columns:1fr}}.prose{max-width:var(--prose-width);font-size:.97rem}.prose h2{font-size:1.2rem;margin:2.2em 0 .8em;padding-bottom:.3em;border-bottom:1px solid var(--border)}.prose h2:first-of-type{margin-top:1em}.prose ol,.prose ul{padding-left:1.4em}.prose li{margin:.3em 0}.prose table{display:block;overflow-x:auto;max-width:100%;border-collapse:collapse;font-size:.9rem;margin:1em 0}.prose th,.prose td{border:1px solid var(--border);padding:8px 12px;text-align:left;vertical-align:top}.prose thead th{background:var(--bg-subtle);white-space:nowrap}.updated{margin-top:2.5em;padding-top:1em;border-top:1px solid var(--border);color:var(--fg-muted);font-size:.85rem}