:root{--ink:#202826;--muted:#56635d;--paper:#f7f8f5;--surface:#fff;--line:#d9dfd9;--green:#203e33;--dark:#162b23;--accent:#d6e5cd;--radius:10px;--max:1160px;color-scheme:light;color:var(--ink);background:var(--surface);font-synthesis:none;font-family:-apple-system,BlinkMacSystemFont,Hiragino Kaku Gothic ProN,Yu Gothic,Meiryo,sans-serif;line-height:1.8}*{box-sizing:border-box}body{margin:0}a{color:inherit;text-underline-offset:.25em}button,input,summary{font:inherit}button,summary{cursor:pointer}a,button,input,summary{-webkit-tap-highlight-color:transparent}button,input{border-radius:4px}button{color:var(--ink)}[hidden]{display:none!important}img,svg{max-width:100%;height:auto}h1,h2,h3,p{overflow-wrap:anywhere}h1,h2,h3{letter-spacing:-.035em;line-height:1.5}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(2rem,4vw,3rem)}h2{font-size:clamp(1.4rem,2.4vw,1.85rem)}h3{font-size:1.1rem}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline-offset:5px;outline:3px solid #477856}main:focus{outline:none}section[id],h2[id],h3[id],#author{scroll-margin-top:100px}.container{width:min(var(--max), 100% - 64px);margin-inline:auto}.eyebrow{letter-spacing:.12em;color:var(--green);font-size:.7rem;font-weight:700;line-height:1.8;display:block}.small,.field-hint{color:var(--muted);font-size:.8rem}.skip-link{z-index:100;color:var(--green);background:#fff;padding:12px 20px;position:fixed;top:8px;left:8px;transform:translateY(-180%)}.skip-link:focus{transform:none}.site-header{border-bottom:1px solid var(--line);z-index:20;background:#fffffff5;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;gap:20px;min-height:84px;display:flex}.brand{letter-spacing:-.5px;align-items:center;gap:12px;font-family:Arial,sans-serif;font-size:23px;font-weight:800;line-height:1;text-decoration:none;display:flex}.brand-mark{background:var(--green);color:#fff;border-radius:6px;place-items:center;width:42px;height:42px;font-size:17px;display:grid}.brand small{letter-spacing:1.8px;color:var(--muted);margin-top:7px;font-size:8px;line-height:1.5;display:block}.desktop-nav{gap:30px;font-size:.85rem;font-weight:600;display:flex}.desktop-nav a{align-items:center;min-height:44px;text-decoration:none;display:inline-flex}.desktop-nav a:hover,.desktop-nav a[aria-current]{text-decoration:underline}.mobile-menu{display:none}.button{border:1px solid var(--line);min-height:48px;color:var(--ink);background:#fff;border-radius:5px;justify-content:center;align-items:center;gap:12px;padding:10px 20px;font-size:.85rem;font-weight:700;text-decoration:none;display:inline-flex}.button:hover{background:#e9eee6}.button-dark{color:#fff;background:var(--green);border-color:var(--green)}.button-dark:hover{background:#315745}.button-light{color:var(--dark);background:#e4ebdd;border-color:#e4ebdd}.text-link{align-items:center;min-height:44px;font-size:.85rem;font-weight:700;display:inline-flex}.hero{background:var(--dark);color:#fff}.hero-inner{grid-template-columns:1.25fr 1fr;align-items:center;gap:32px;padding-block:58px;display:grid}.hero .eyebrow{color:#c4d8bc;margin-bottom:20px;font-size:.65rem}.hero h1{letter-spacing:-.04em;margin-bottom:20px;font-size:clamp(2rem,3.7vw,3.4rem);line-height:1.5}.hero p{color:#d3ddd4;font-size:.85rem}.hero .hero-lead{color:#fff;margin-bottom:8px;font-size:1.05rem}.hero-actions{flex-wrap:wrap;align-items:center;gap:20px;margin-top:25px;display:flex}.hero-link{align-items:center;min-height:44px;font-size:.8rem;display:inline-flex}.desk-illustration{padding-top:10px}.desk-illustration svg{width:100%;max-height:320px;display:block}.category-section{padding:38px 0 42px}.section-heading{justify-content:space-between;align-items:end;gap:20px;margin-bottom:8px;display:flex}.section-heading h2{margin:6px 0 0}.section-heading p{margin:0}.section-description{color:var(--muted);margin-bottom:24px;font-size:.85rem}.category-grid{grid-template-columns:repeat(3,1fr);gap:12px;display:grid}.category-card{border:1px solid var(--line);background:#fff;border-radius:6px;justify-content:space-between;align-items:center;gap:16px;min-height:92px;padding:16px;text-decoration:none;display:flex}.category-card:hover{border-color:var(--green);background:var(--paper)}.category-card>div{flex:1}.category-number{color:#697b6e;font-family:Georgia,serif;font-size:1.5rem}.category-card h3{margin-bottom:2px;font-size:.95rem}.category-card p{color:var(--muted);margin:0;font-size:.7rem}.articles-section{background:var(--paper);border-block:1px solid var(--line);padding:44px 0 60px}article-search{display:block}.search-form{max-width:680px;margin:26px 0 16px}.search-form label,.filter-group legend{margin-bottom:8px;font-size:.85rem;font-weight:700}.search-input-row{gap:8px;display:flex}.search-input-row input{width:100%;min-width:0;min-height:48px;color:var(--ink);background:#fff;border:1px solid #85948b;padding:10px 14px;font-size:1rem}.search-input-row input::placeholder{color:#626e65}.search-input-row button{flex-shrink:0}.field-hint{margin:6px 0 0}.filter-group{border:0;min-width:0;margin:22px 0 0;padding:0}.filter-group legend{padding:0}.filter-options{flex-wrap:wrap;gap:8px;display:flex}.filter-button{background:#fff;border:1px solid #9caaa0;min-height:44px;padding:8px 16px;font-size:.8rem}.filter-button[aria-pressed=true]{background:var(--green);color:#fff;border-color:var(--green);font-weight:700}.result-count{color:var(--muted);margin:18px 0 14px;font-size:.8rem}.article-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;display:grid}.article-card{border:1px solid var(--line);border-radius:var(--radius);background:#fff;min-width:0;overflow:hidden}.article-card>a{height:100%;text-decoration:none;display:block}.article-card>a:hover h3{text-underline-offset:.25em;text-decoration:underline}.card-visual{color:#3a5948;background:#e5ebe2;align-items:center;height:146px;padding:24px;display:flex;position:relative;overflow:hidden}.card-visual:after{content:"";border:1px solid #a5b5a7;border-radius:50%;width:230px;height:230px;position:absolute;top:-40px;right:-40px}.visual-number{z-index:1;font:italic 64px/1 Georgia,serif;position:relative}.visual-label{color:var(--green);z-index:1;letter-spacing:.13em;font-size:.6rem;position:absolute;bottom:14px;right:16px}.visual-line{background:#acbcae;height:1px;position:absolute;top:50%;left:0;right:0;transform:rotate(-20deg)}.visual-mic,.visual-furniture{background:#e9e8e2}.visual-peripherals,.visual-lighting{background:#dfe8e3}.card-body{padding:22px}.card-body .eyebrow{font-size:.65rem}.card-body h3{margin:9px 0 10px;font-size:1rem;line-height:1.75}.card-body p{color:var(--muted);margin-bottom:20px;font-size:.8rem}.read-more{color:var(--green);justify-content:space-between;font-size:.8rem;font-weight:700;display:flex}.notice{color:#3c5145;background:#eef2eb;border-left:3px solid #657e63;margin-top:28px;padding:14px 18px;font-size:.8rem;line-height:1.9}.empty-state{text-align:center;border:1px solid var(--line);background:#fff;padding:36px 20px}.empty-state p{color:var(--muted)}.policy-section{padding:52px 0}.policy-banner{background:var(--dark);color:#fff;border-radius:8px;justify-content:space-between;align-items:center;gap:32px;padding:36px 40px;display:flex}.policy-banner .eyebrow{color:#c4d8bc}.policy-banner h2{margin:7px 0;font-size:1.4rem}.policy-banner p{color:#d3ddd4;margin:0;font-size:.85rem}.policy-banner .button{flex-shrink:0}.site-footer{color:#e0e7df;background:#17241e;padding:42px 0}.footer-inner{justify-content:space-between;gap:40px;display:flex}.footer-brand{letter-spacing:.03em;font:700 20px Arial,sans-serif;text-decoration:none}.site-footer p{color:#c2cfc3;max-width:510px;margin:15px 0;font-size:.8rem}.site-footer small{color:#c2cfc3;font-size:.75rem}.site-footer nav{flex-wrap:wrap;align-items:start;gap:6px 24px;display:flex}.site-footer nav a{align-items:center;min-height:44px;font-size:.8rem;display:inline-flex}.breadcrumbs{color:var(--muted);margin-bottom:30px;font-size:.75rem}.breadcrumbs ol{flex-wrap:wrap;gap:6px 12px;margin:0;padding:0;list-style:none;display:flex}.breadcrumbs li+li:before{content:"/";color:#68796e;margin-right:12px}.breadcrumbs a{align-items:center;min-height:32px;display:inline-flex}.page-section,.policy-page,.article-shell{padding-block:36px 72px}.page-heading{max-width:780px;margin-bottom:40px}.page-heading h1{margin:12px 0}.page-heading p{color:var(--muted)}.list-title{margin-bottom:22px;font-size:1.3rem}.category-links{border-top:1px solid var(--line);margin-top:50px;padding-top:30px}.category-links h2{font-size:1.15rem}.category-links>div{flex-wrap:wrap;gap:10px;display:flex}.article-header{max-width:820px;margin:0 auto 35px}.article-header h1{margin:14px 0 20px;font-size:clamp(1.8rem,3.5vw,2.6rem);line-height:1.6}.article-intro{color:#4a5c50;font-size:1.05rem;line-height:2}.article-meta{color:var(--muted);flex-wrap:wrap;gap:6px 20px;font-size:.75rem;display:flex}.article-meta a{align-items:center;min-height:32px;display:inline-flex}.reading-layout{grid-template-columns:240px minmax(0,760px);justify-content:center;align-items:start;gap:48px;margin-top:44px;display:grid}.toc{border-top:2px solid var(--green);padding-top:18px;font-size:.8rem;position:sticky;top:110px}.toc h2{margin-bottom:10px;font-size:.95rem}.toc ol{padding-left:20px}.toc li{margin-bottom:5px;padding-left:3px}.toc a{padding-block:6px;display:inline-block}.toc-nested{margin-left:12px}.prose{color:#344b3f;overflow-wrap:anywhere;min-width:0;font-size:1rem;line-height:2}.prose h2{border-bottom:1px solid var(--line);color:var(--ink);margin:42px 0 20px;padding-bottom:12px;font-size:1.4rem}.prose h2:first-child{margin-top:0}.prose h3{color:var(--ink);margin:30px 0 12px}.prose p{margin-bottom:24px}.prose li{margin-bottom:10px}.prose a{color:#244e36;text-decoration:underline}.prose blockquote{background:#eef2eb;border-left:3px solid #657e63;margin:30px 0;padding:18px 22px;font-size:.9rem}.prose blockquote p:last-child{margin-bottom:0}.prose table{border-collapse:collapse;max-width:100%;font-size:.9rem;display:block;overflow-x:auto}.prose th,.prose td{border:1px solid var(--line);min-width:120px;padding:12px}.prose pre{padding:16px;overflow-x:auto}.author-box{background:var(--paper);border:1px solid var(--line);border-radius:6px;max-width:820px;margin:45px auto 0;padding:28px}.author-box h2{margin:8px 0;font-size:1.15rem}.author-box p{color:var(--muted);margin-bottom:8px;font-size:.85rem}.related-section{border-top:1px solid var(--line);margin-top:65px;padding-top:35px}.related-section .section-heading{margin-bottom:24px}.policy-page{max-width:820px}.policy-page h1{margin-bottom:25px}.policy-prose{margin-top:35px}.tip{background:#eef2eb;border-left:3px solid #657e63;padding:18px}.error-page{min-height:60vh;padding-block:100px}.error-page h1{margin:20px 0}.error-page p{color:var(--muted)}@media (width<=960px){.hero-inner{grid-template-columns:1.3fr 1fr;gap:16px}.hero h1{font-size:2.15rem}.category-grid{grid-template-columns:repeat(2,1fr)}.article-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.reading-layout{grid-template-columns:1fr;gap:28px;max-width:760px;margin-inline:auto}.toc{background:var(--paper);padding:20px 24px;position:static}.toc ol{margin-bottom:0}.policy-banner{flex-direction:column;align-items:start}.footer-inner{flex-direction:column;gap:20px}}@media (width<=640px){.container{width:calc(100% - 36px)}.header-inner{gap:12px;min-height:72px}.brand{gap:9px;font-size:20px}.brand small{letter-spacing:1.1px;font-size:7px}.brand-mark{width:36px;height:36px;font-size:15px}.desktop-nav{display:none}.mobile-menu{display:block}.mobile-menu summary{border:1px solid var(--line);white-space:nowrap;border-radius:4px;align-items:center;min-height:44px;padding:8px 10px;font-size:.8rem;font-weight:700;list-style:none;display:flex}.mobile-menu summary::-webkit-details-marker{display:none}.mobile-menu nav{border-bottom:1px solid var(--line);background:#fff;grid-template-columns:1fr 1fr;gap:4px 12px;max-height:calc(100dvh - 72px);padding:14px 18px;display:grid;position:absolute;top:calc(100% - 1px);left:0;right:0;overflow-y:auto;box-shadow:0 12px 16px #172a2110}.mobile-menu nav a{border-bottom:1px solid #edf0eb;align-items:center;min-height:48px;font-size:.85rem;text-decoration:none;display:flex}.hero-inner{grid-template-columns:1fr;gap:10px;padding-block:32px;position:relative}.hero h1{margin-bottom:14px;font-size:clamp(1.7rem,7.1vw,2.4rem)}.hero .eyebrow{letter-spacing:.09em;margin-bottom:14px;font-size:.58rem}.hero p{font-size:.8rem}.hero .hero-lead{font-size:.9rem}.hero-actions{gap:10px;margin-top:20px}.hero .button{padding:10px 15px}.hero-link{font-size:.75rem}.desk-illustration,.desktop-break{display:none}.category-section{padding:28px 0}.section-heading{align-items:center;gap:10px}.section-heading h2{font-size:1.3rem}.section-heading .small{white-space:nowrap;font-size:.6rem}.section-description{margin-top:10px;margin-bottom:18px;font-size:.8rem}.category-grid{gap:8px}.category-card{gap:8px;min-height:80px;padding:12px 10px}.category-number{font-size:1.15rem}.category-card h3{font-size:.78rem}.category-card p{font-size:.65rem;line-height:1.6}.category-card>span:last-child{display:none}.articles-section{padding:30px 0 36px}.search-form{margin-top:20px}.filter-options{gap:7px}.filter-button{padding:8px 12px}.article-grid{grid-template-columns:1fr;gap:18px}.card-visual{height:125px}.card-body{padding:20px}.card-body h3{font-size:1.05rem}.card-body p{font-size:.85rem}.policy-section{padding:30px 0}.policy-banner{gap:18px;padding:26px 22px}.policy-banner h2{font-size:1.2rem}.site-footer{padding:30px 0}.site-footer nav{gap:4px 18px}.page-section,.policy-page,.article-shell{padding-block:24px 48px}.breadcrumbs{margin-bottom:24px;font-size:.7rem}.article-header h1{font-size:1.7rem}.article-intro{font-size:1rem}.article-meta{display:block}.article-meta>span{margin-top:4px;display:block}.notice{padding:12px 14px}.reading-layout{margin-top:28px}.prose h2{font-size:1.25rem}.prose{font-size:1rem;line-height:2}.author-box{padding:22px}.related-section .section-heading{flex-direction:column;align-items:start;gap:4px}.error-page{padding-block:60px}.error-page h1{font-size:1.8rem}}@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}a,button{transition:background-color .15s,border-color .15s,color .15s}}@media print{.site-header,.site-footer,.toc,.related-section,.skip-link{display:none}.reading-layout{display:block}.container{width:100%}.article-shell{padding:0}a{color:#000}.hero{color:#000;background:#fff}}