:root{--bg: #faf8f5;--surface: #ffffff;--border: #ece7df;--text: #2b2a28;--text-sub: #7a756d;--accent: #e8597a;--accent-ink: #b8456a;--radius: 16px;--shadow: 0 1px 2px rgba(0, 0, 0, .04), 0 8px 24px rgba(0, 0, 0, .06);--font-ui: ui-sans-serif, system-ui, -apple-system, "Segoe UI", "Noto Sans JP", sans-serif}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:var(--font-ui);color:var(--text);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}a{color:var(--accent-ink);text-decoration:none}a:hover{text-decoration:underline}.site-header{display:flex;align-items:center;justify-content:space-between;padding:16px clamp(16px,4vw,40px);border-bottom:1px solid var(--border);background:var(--surface)}.brand{font-weight:800;font-size:20px;letter-spacing:-.02em;color:var(--text)}.brand span{color:var(--accent)}.container{max-width:1120px;margin:0 auto;padding:clamp(20px,4vw,48px) clamp(16px,4vw,40px)}.btn{appearance:none;border:1px solid transparent;border-radius:12px;padding:12px 18px;font:inherit;font-weight:700;cursor:pointer;transition:transform .06s ease,background .15s ease,box-shadow .15s ease;user-select:none}.btn:active{transform:translateY(1px)}.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow)}.btn-primary:hover{background:var(--accent-ink)}.btn-ghost{background:var(--surface);border-color:var(--border);color:var(--text)}.btn-ghost:hover{background:#fbfaf8}.btn:disabled{opacity:.55;cursor:progress}.field{display:block;margin-bottom:16px}.field>label{display:block;font-size:13px;font-weight:700;color:var(--text-sub);margin-bottom:6px}.input,.textarea{width:100%;border:1px solid var(--border);border-radius:12px;background:var(--surface);padding:12px 14px;font:inherit;color:var(--text);resize:vertical}.input:focus,.textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px #e8597a26}.muted{color:var(--text-sub);font-size:14px}