:root{color-scheme:light;--bg:#eef1f4;--ink:#17191d;--muted:#626872;--panel:#fff;--line:#d9dee5;--accent:#c61f2b;--accent-dark:#a51520;--accent-soft:#fff0f1;--shadow:0 20px 50px rgba(26,31,39,.1)}
*{box-sizing:border-box}body{margin:0;font-family:"Avenir Next",Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}a{color:inherit}.seo-header{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:14px max(22px,env(safe-area-inset-right,0px)) 14px max(22px,env(safe-area-inset-left,0px));border-top:4px solid var(--accent);border-bottom:1px solid var(--line);background:rgba(255,255,255,.94);backdrop-filter:blur(14px)}.seo-brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:900;color:var(--accent);text-transform:uppercase;letter-spacing:.08em}.seo-brand img{width:74px;height:auto;display:block}.seo-header nav{display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-end;gap:8px}.seo-header nav a{padding:8px 10px;border-radius:6px;text-decoration:none;color:var(--muted);font-weight:750}.seo-header nav a:hover{background:var(--accent-soft);color:var(--accent-dark)}.seo-header .nav-app{background:var(--accent);color:#fff}.seo-header .nav-app:hover{background:var(--accent-dark);color:#fff}main{width:min(1120px,100%);margin:0 auto;padding:36px 22px 60px}.hero{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(260px,.9fr);align-items:center;gap:36px;padding:54px 0}.hero img{width:100%;max-width:420px;justify-self:center;border-radius:8px}.hero h1,.page-hero h1,.article h1{margin:0;color:var(--ink);font-size:clamp(2.2rem,6vw,4.8rem);line-height:1.02;letter-spacing:0}.hero p,.page-hero p,.lede{font-size:1.12rem;color:var(--muted);max-width:760px}.eyebrow{margin:0 0 10px;color:var(--accent);font-size:.82rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 16px;border:1px solid var(--line);border-radius:6px;background:#fff;text-decoration:none;font-weight:850}.button.primary{border-color:var(--accent);background:var(--accent);color:#fff}.section{padding:34px 0}.section h2,.article h2{margin:0 0 12px;font-size:clamp(1.55rem,3vw,2.2rem);line-height:1.15}.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px}.card,.panel{display:block;padding:20px;border:1px solid var(--line);border-radius:8px;background:var(--panel);box-shadow:0 8px 22px rgba(26,31,39,.06);text-decoration:none}.card h3{margin:0 0 8px;font-size:1.25rem}.card p,.panel p{margin:0;color:var(--muted)}.card.compact h3{font-size:2rem;color:var(--accent)}.split{display:grid;grid-template-columns:1fr minmax(260px,.55fr);gap:20px;align-items:start}.page-hero{padding:42px 0 20px}.article{max-width:850px;margin:0 auto;padding:42px 0}.article ul,.article ol{padding-left:1.3rem}.kana{margin:0 0 6px;color:var(--accent);font-weight:900}.kana.large{font-size:1.45rem}.example-list{display:grid;gap:10px;margin:16px 0}.example-list p{margin:0;padding:14px 16px;border-left:4px solid var(--accent);border-radius:6px;background:#fff;font-size:1.2rem}.compare-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin:18px 0}.seo-footer{display:grid;gap:4px;padding:20px 22px;border-top:1px solid var(--line);background:#fff;color:var(--muted);font-size:.82rem;text-align:center}.seo-footer p{margin:0}@media(max-width:720px){.seo-header{position:static;align-items:flex-start;flex-direction:column;gap:12px}.seo-header nav{justify-content:flex-start}.hero,.split{grid-template-columns:1fr}.hero{padding-top:28px}.hero img{max-width:260px;order:-1}.seo-brand img{width:60px}main{padding:24px 16px 48px}.card,.panel{padding:16px}}