:root{--main-blue:#0058c9;--accent-gold:#d1b446;--bg-light:#f5f8ff;--text-dark:#222;--text-soft:#555;--font-sans:"Noto Sans JP",sans-serif;--font-serif:"Noto Serif JP",serif;--radius-base:6px}body,html{background:var(--bg-light);color:var(--text-dark);font-family:var(--font-sans);line-height:1.8;margin:0;padding:0}.chat-container{display:flex;flex-direction:column;gap:12px;max-width:520px;margin:0 auto;padding:0 16px 24px;box-sizing:border-box}.chat-row{display:flex;width:100%}.chat-ai,.chat-row{justify-content:flex-start}.chat-user{justify-content:flex-end!important}.chat-bubble{max-width:75%;width:auto;padding:10px 14px;border-radius:16px;line-height:1.7;white-space:pre-line;font-size:.95rem}.chat-bubble-ai{background:#eef3fa;color:#1a1a1a;border-bottom-left-radius:4px}.chat-bubble-user{background:#fff;color:#1a1a1a;border:1px solid #d0d0d0;border-bottom-right-radius:4px}.chat-container{gap:.4rem}.chat-row{margin-bottom:.15rem}.chat-row:last-child{margin-bottom:0}.chat-wrapper{max-width:520px;margin:0 auto;width:100%;box-sizing:border-box}