:root{--bg:#f6f0e6;--bg-deep:#e8dcc4;--ink:#2b2a27;--ink-muted:#6e685f;--accent:#2f5d50;--accent-strong:#1f3f36;--accent-warm:#a05a3d;--bubble-user:#2f5d50;--bubble-user-text:#f8f4ec;--bubble-other:#fffaf2;--bubble-other-text:#2b2a27;--system-bg:#efe5d1;--border:#d8c7a4;--error:#b13d2d;--shadow:0 16px 32px rgba(31,63,54,0.12);--radius:16px;--radius-sm:10px;--max-width:960px}*{box-sizing:border-box;padding:0;margin:0}body,html{max-width:100vw;min-height:100vh;overflow-x:hidden}body.scrollLock,html.scrollLock{height:100%;overflow:hidden;overscroll-behavior:none}body.scrollLock{position:fixed;width:100%}body{color:var(--ink);background:radial-gradient(circle at 20% 20%,#fdfaf4 0,transparent 45%),radial-gradient(circle at 80% 0,#efe5d2 0,transparent 50%),linear-gradient(160deg,var(--bg) 0,var(--bg-deep) 100%);font-family:Hiragino Kaku Gothic ProN,Yu Gothic,Meiryo,sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}h1,h2,h3{font-family:Hiragino Mincho ProN,Yu Mincho,"Noto Serif JP",serif;letter-spacing:.02em}.app-shell{min-height:100vh;display:flex;flex-direction:column}.container{width:min(100%,var(--max-width));margin:0 auto;padding:24px}.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;background:#f0e4d0;color:var(--ink-muted);font-size:12px;font-weight:600}.card{background:rgba(255,252,246,.96);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.btn{border:none;border-radius:999px;padding:12px 18px;font-weight:600;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease}.btn-primary{background:var(--accent);color:var(--bubble-user-text);box-shadow:0 8px 18px rgba(47,93,80,.22)}.btn-primary:hover{transform:translateY(-1px)}.btn-secondary{background:#f0e4d0;color:var(--accent-strong)}.input{width:100%;border-radius:12px;border:1px solid var(--border);background:#fffdf8}.input,.notice{padding:12px 14px}.notice{border-radius:12px;background:#fff3e8;color:var(--accent-warm);border:1px solid #e6c7b2;font-size:14px}.error{color:var(--error);font-size:13px}@media (max-width:720px){.container{padding:18px}}