:root{--bg: #FFF8E7;--bg-card: #FFFFFF;--text: #3D2817;--text-muted: #6B5847;--accent: #C97B3C;--accent-hover: #A85F22;--border: #E8DCC4;--radius: 14px;--font-base: 20px;--font-family: "Hiragino Sans", "BIZ UDPGothic", "Yu Gothic", system-ui, sans-serif}*{box-sizing:border-box}html{font-size:var(--font-base);line-height:1.8}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-family);-webkit-text-size-adjust:100%}a{color:var(--accent-hover);text-decoration:underline;text-underline-offset:3px}a:hover{color:var(--accent)}h1,h2,h3{line-height:1.4;letter-spacing:.02em}h1{font-size:2rem}h2{font-size:1.6rem}h3{font-size:1.25rem}main{max-width:780px;margin:0 auto;padding:2rem 1.25rem 4rem}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;margin-bottom:1.25rem}.btn{display:inline-block;background:var(--accent);color:#fff;padding:.9rem 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