:root{--bg: #fbfaf6;--surface: rgba(255, 255, 255, .92);--surface-strong: #ffffff;--text: #203325;--muted: #5f6f61;--line: rgba(62, 90, 49, .11);--brand: #5c8a43;--brand-deep: #29472e;--shadow: 0 14px 32px rgba(82, 83, 56, .07);--radius-xl: 24px;--radius-lg: 18px;--radius-md: 18px;--container: min(1024px, calc(100vw - 32px) )}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--text);font-family:Noto Sans JP,Hiragino Sans,Yu Gothic,Meiryo,sans-serif;background:radial-gradient(circle at top left,rgba(146,181,111,.08),transparent 28%),radial-gradient(circle at top right,rgba(242,198,114,.08),transparent 24%),linear-gradient(180deg,#fff,#fbfaf6)}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:var(--container);margin:0 auto}.home-page .header-inner{width:min(1280px,calc(100vw - 44px))}.site-header{z-index:50;background:#fffffff5;border-bottom:1px solid rgba(92,138,67,.08)}.header-inner{min-height:84px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:inline-flex;align-items:center;gap:14px}.brand-mark{width:42px;height:42px;display:grid;place-items:center}.brand-mark img{width:28px;height:28px;object-fit:contain}.brand strong{display:block;font-size:1.9rem;letter-spacing:.03em}.brand small{color:var(--muted);font-size:.82rem}.site-nav{display:flex;align-items:center;gap:26px}.site-nav a{padding:4px 0;color:#26372a;font-size:.98rem;font-weight:500;white-space:nowrap}.site-nav a.active,.site-nav a:hover{background:transparent;color:var(--brand-deep)}.nav-toggle{display:none;width:46px;height:46px;border:0;border-radius:14px;background:#5c8a431a;padding:12px 10px}.nav-toggle span{display:block;height:2px;margin:4px 0;background:var(--brand-deep);border-radius:999px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}main{padding:0 0 40px}.site-footer{padding:16px 0 24px}.feature-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;background:transparent}.feature-item{display:flex;gap:12px;padding:10px 20px 8px;align-items:flex-start;color:var(--brand)}.feature-item+.feature-item{border-left:1px solid rgba(92,138,67,.14)}.feature-item strong{display:block;margin-bottom:4px;color:var(--brand-deep);font-size:.98rem}.feature-item p,.copyright{margin:0;color:var(--muted);font-size:.88rem;line-height:1.5}.copyright{padding-top:20px;text-align:center}.prose{background:#ffffffbf;border:1px solid rgba(92,138,67,.12);border-radius:var(--radius-xl);box-shadow:var(--shadow);padding:34px}.prose h1,.prose h2,.prose h3{color:var(--brand-deep);line-height:1.35}.prose h1{font-family:"Noto Serif JP",Yu Mincho,Hiragino Mincho ProN,serif;font-size:clamp(2rem,4vw,3rem);margin:0 0 16px}.prose h2{margin:36px 0 14px;font-size:clamp(1.35rem,2vw,1.7rem)}.prose p,.prose li,.prose td,.prose th{color:#32453a;line-height:1.9}.prose ul,.prose ol{padding-left:1.25rem}.prose table{width:100%;border-collapse:collapse;margin:18px 0;background:#ffffffb8;overflow:hidden;border-radius:18px}.prose th,.prose td{border:1px solid rgba(92,138,67,.12);padding:12px 14px;text-align:left}.prose a{color:#2d6845;text-decoration:underline;text-underline-offset:.18em}.section-heading{margin-bottom:12px}.section-heading .eyebrow{display:inline-flex;align-items:center;gap:12px;color:var(--brand);font-weight:700;font-size:1.05rem}.section-heading h1,.section-heading h2{margin:10px 0 8px;color:#182918;font-family:"Noto Serif JP",Yu Mincho,Hiragino Mincho ProN,serif;font-size:clamp(2rem,4vw,3rem)}.section-heading p{margin:0;color:var(--muted);font-size:1.05rem;line-height:1.8}@media (max-width: 920px){.feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.feature-item:nth-child(3){border-left:0;border-top:1px solid rgba(92,138,67,.12)}.feature-item:nth-child(4){border-top:1px solid rgba(92,138,67,.12)}}@media (max-width: 760px){.home-page .header-inner{width:min(100vw - 24px,1280px)}.header-inner{min-height:74px}.brand strong{font-size:1.5rem}.brand small{font-size:.76rem}.nav-toggle{display:block}.site-nav{position:absolute;top:calc(100% + 10px);right:16px;left:16px;padding:10px;border-radius:18px;background:#fffcf6fa;border:1px solid rgba(92,138,67,.12);box-shadow:var(--shadow);display:none;flex-direction:column;align-items:stretch;gap:4px}.site-nav.is-open{display:flex}.site-nav a{width:100%;text-align:center;padding:10px 14px;border-radius:999px}.prose{padding:24px 20px;border-radius:24px}}@media (max-width: 640px){main{padding-top:12px}.feature-grid{grid-template-columns:1fr}.feature-item+.feature-item,.feature-item:nth-child(3),.feature-item:nth-child(4){border-left:0;border-top:1px solid rgba(92,138,67,.12)}}