:root{--color-primary:#7c5a3a;--color-secondary:#f3ede6;--color-accent:#111827;--radius-card:20px;--radius-button:999px;--container-width:1320px;--bg-page:#ffffff;--text-main:#0f172a;--text-soft:#475569;--border-soft:#e2e8f0}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg-page);color:var(--text-main);font-family:Arial,sans-serif}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.site-shell{min-height:100vh}.container{width:min(100% - 32px,var(--container-width));margin:0 auto}.page-stack{display:flex;flex-direction:column}.section-card{border:1px solid var(--border-soft);border-radius:var(--radius-card);overflow:hidden}.btn-primary{display:inline-flex;align-items:center;justify-content:center;padding:12px 20px;border-radius:var(--radius-button);background:var(--color-primary);color:#fff;font-weight:700}.html-section{width:100%}.dev-note{padding:10px 14px;border-radius:12px;background:#fff7ed;color:#9a3412;font-size:14px}