:root{--bg-color: #f5f0e8;--paper-color: #faf7f2;--paper-shadow: #e8e2d6;--ink-color: #1a2744;--ink-light: #2d3e5c;--text-primary: #1c1917;--text-secondary: #44403c;--accent-color: #1a2744;--accent-hover: #2d3e5c;--accent-glow: rgba(26, 39, 68, .15);--error-color: #8b2500;--border-color: #d6d0c4;--font-family: "LINE Seed JP", "Noto Sans JP", sans-serif;--radius-lg: 20px;--radius-md: 12px;--radius-sm: 6px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--bg-color);color:var(--text-primary);min-height:100vh;display:flex;justify-content:center;align-items:center;overflow-x:hidden;position:relative}body:before{content:"";position:fixed;top:0;left:0;width:100%;height:100%;z-index:-1;pointer-events:none;background-image:radial-gradient(ellipse at 20% 50%,rgba(26,39,68,.04) 0%,transparent 50%),radial-gradient(ellipse at 80% 20%,rgba(139,107,78,.06) 0%,transparent 50%),radial-gradient(ellipse at 50% 80%,rgba(26,39,68,.03) 0%,transparent 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h1{font-size:2.2rem;font-weight:700;letter-spacing:.02em;color:var(--ink-color);line-height:1.3}.accent{color:var(--ink-color);position:relative;display:inline-block}.accent:after{content:"";position:absolute;bottom:2px;left:0;width:100%;height:3px;background:var(--ink-color);opacity:.15;border-radius:1px}header p{color:var(--text-secondary);font-size:.85rem;margin-top:2px;padding-bottom:.5rem;letter-spacing:.1em;font-weight:300}.content-grid{display:grid;grid-template-columns:1fr;gap:1.5rem;flex:1;padding:1rem 1.5rem 1.5rem}@media(min-width:768px){.content-grid{grid-template-columns:1fr 1fr}}.panel{background:var(--paper-color);border-radius:var(--radius-md);padding:1.5rem;display:flex;flex-direction:column;gap:1.25rem;border:1px solid var(--border-color);box-shadow:0 1px 2px #1c19170a,0 2px 8px #1c191708;position:relative}.panel:after{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--ink-color);opacity:.06;border-radius:var(--radius-md) var(--radius-md) 0 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var(--border-color);color:var(--text-primary);width:32px;height:32px;border-radius:50%;cursor:pointer;position:absolute;top:10px;right:10px;font-size:1.2rem;display:flex;align-items:center;justify-content:center;transition:all .2s;box-shadow:0 1px 3px #1c19171a}.icon-btn:hover{background:var(--error-color);color:#fff;border-color:var(--error-color)}.style-section{display:flex;flex-direction:column;gap:.5rem}.style-section label{font-size:.75rem;color:var(--text-secondary);font-weight:400;letter-spacing:.05em}.style-selector{display:grid;grid-template-columns:repeat(auto-fit,minmax(100px,1fr));gap:.6rem}.style-btn{display:flex;flex-direction:column;align-items:center;gap:.4rem;padding:.5rem;border:2px solid transparent;background:var(--bg-color);border-radius:var(--radius-sm);cursor:pointer;transition:all .2s}.style-btn img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:4px;background:#1a27440d}.style-btn span{font-size:.75rem;color:var(--text-primary);font-weight:500}.style-btn:hover{background:#1a27440d;transform:translateY(-1px);box-shadow:0 2px 8px #1c191714}.style-btn.active{background:#1a274414;border-color:var(--ink-color);box-shadow:0 0 0 1px var(--ink-color)}.style-btn.active span{color:var(--ink-color);font-weight:700}.prompt-section{display:flex;flex-direction:column;gap:.5rem;animation:fadeIn .3s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.prompt-section label{font-size:.75rem;color:var(--text-secondary);letter-spacing:.05em}.prompt-section textarea{background:var(--bg-color);border:1px solid var(--border-color);border-radius:var(--radius-sm);padding:.8rem;color:var(--text-primary);resize:vertical;min-height:80px;font-family:inherit;font-size:.9rem;outline:none;transition:border-color .2s,box-shadow .2s}.prompt-section textarea:focus{border-color:var(--ink-color);box-shadow:0 0 0 2px var(--accent-glow)}button{cursor:pointer;font-family:inherit;transition:all .15s ease}button:active{transform:scale(.98)}.primary-btn{background:var(--ink-color);color:#faf7f2;border:none;padding:.9rem;border-radius:var(--radius-sm);font-weight:600;font-size:.95rem;letter-spacing:.05em;width:100%;display:flex;justify-content:center;align-items:center;position:relative;box-shadow:0 1px 3px #1a27444d,0 4px 12px #1a274426}.primary-btn:hover{background:var(--accent-hover);box-shadow:0 1px 3px #1a27444d,0 6px 20px #1a274433}.primary-btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}.secondary-btn{background:transparent;border:2px solid var(--ink-color);color:var(--ink-color);padding:.75rem;border-radius:var(--radius-sm);font-weight:600;font-size:.9rem;letter-spacing:.05em;width:100%;margin-top:auto;transition:all .2s}.secondary-btn:hover{background:var(--ink-color);color:#faf7f2;box-shadow:0 1px 3px #1a27444d,0 4px 12px 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var(--border-color);background:var(--bg-color)}.danger-btn{background:transparent;color:var(--error-color);border:1px solid var(--error-color);padding:.5rem;border-radius:var(--radius-sm);font-size:.8rem;font-weight:600;margin-top:.25rem;letter-spacing:.03em}.danger-btn:hover{background:var(--error-color);color:var(--paper-color)}.color-mode-selector{display:flex;gap:.4rem;margin-bottom:.5rem}.color-mode-btn{flex:1;padding:.4rem;border:1px solid var(--border-color);background:var(--bg-color);border-radius:var(--radius-sm);font-size:.75rem;color:var(--text-primary);cursor:pointer;transition:all .15s;font-weight:500}.color-mode-btn.active{background:var(--ink-color);color:var(--paper-color);border-color:var(--ink-color)}.color-control{display:flex;flex-direction:column;gap:.5rem}.gradient-colors{display:flex;align-items:center;gap:.5rem}.gradient-colors input[type=color]{flex:1}.gradient-colors 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