:root{--bg: #ffffff;--surface: #ffffff;--surface-alt: #f5f5f7;--border: #e1e1e6;--text: #1b1b20;--text-subtle: #5f5f6b;--accent: #0f4c81;--accent-text: #ffffff;--accent-soft: #e8f0f8;--warn-bg: #fdf6e3;--warn-border: #e6cf8b;--error-bg: #fdecea;--error-border: #e6a49c;--radius: 8px;--gap: 16px}:root[data-theme=dark]{--bg: #1f1f23;--surface: #2a2a2f;--surface-alt: #323238;--border: #3d3d45;--text: #f0f0f3;--text-subtle: #a9a9b6;--accent: #7cb0dd;--accent-text: #10243a;--accent-soft: #2c3f52;--warn-bg: #3a3320;--warn-border: #6b5c2f;--error-bg: #3d2523;--error-border: #7a3f39}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--bg: #1f1f23;--surface: #2a2a2f;--surface-alt: #323238;--border: #3d3d45;--text: #f0f0f3;--text-subtle: #a9a9b6;--accent: #7cb0dd;--accent-text: #10243a;--accent-soft: #2c3f52;--warn-bg: #3a3320;--warn-border: #6b5c2f;--error-bg: #3d2523;--error-border: #7a3f39}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Segoe UI,system-ui,-apple-system,sans-serif;font-size:14px;line-height:1.5}.shell{max-width:820px;margin:0 auto;padding:24px 16px 48px}.header h1{font-size:20px;margin:0}.subtle{color:var(--text-subtle);margin:4px 0 0}.footnote{margin-top:var(--gap);font-size:13px}.tabs{display:flex;gap:4px;margin:20px 0 16px;border-bottom:1px solid var(--border);overflow-x:auto}.tab{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:none;border:none;border-bottom:2px solid transparent;color:var(--text-subtle);cursor:pointer;font:inherit;padding:8px 12px;white-space:nowrap}.tab:hover{color:var(--text)}.tab-active{color:var(--accent);border-bottom-color:var(--accent);font-weight:600}.stack{display:flex;flex-direction:column;gap:var(--gap)}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;display:flex;flex-direction:column;gap:12px}.card h2{font-size:16px;margin:0}.label{font-weight:600;font-size:13px}.input,.textarea,select.input{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);font:inherit;padding:10px 12px}.textarea{resize:vertical;min-height:120px}.input:focus-visible,.textarea:focus-visible,.button:focus-visible,.tab:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.button{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:var(--accent);border:1px solid var(--accent);border-radius:var(--radius);color:var(--accent-text);cursor:pointer;font:inherit;font-weight:600;padding:9px 16px}.button:disabled{opacity:.5;cursor:not-allowed}.button-subtle{background:transparent;border-color:var(--border);color:var(--text);font-weight:500}.row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.row-between{justify-content:space-between}.notice{background:var(--accent-soft);border:1px solid var(--border);border-radius:var(--radius);padding:12px 14px}.notice-warn{background:var(--warn-bg);border-color:var(--warn-border)}.notice-error{background:var(--error-bg);border-color:var(--error-border)}.notice h1{font-size:18px;margin:0 0 8px}.list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}.list-row{border-bottom:1px solid var(--border)}.list-row:last-child{border-bottom:none}.list-item{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding:12px 0}.list-item-button{width:100%;background:none;border:none;border-radius:6px;color:inherit;cursor:pointer;font:inherit;margin:0;padding:12px 8px;text-align:left}.list-item-button:hover{background:var(--accent-soft)}.list-item-button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.list-side{display:flex;flex-direction:column;align-items:flex-end;gap:6px;flex-shrink:0}.open-chat{color:var(--accent);font-size:13px;font-weight:600;white-space:nowrap}.list-main{display:flex;flex-direction:column;gap:2px;min-width:0}.ticket-id{color:var(--text-subtle);font-variant-numeric:tabular-nums;font-size:13px}.ticket-summary{overflow-wrap:anywhere}.pill{background:var(--accent-soft);border-radius:999px;color:var(--text);font-size:12px;padding:3px 10px;white-space:nowrap}.pill-closed{background:var(--surface-alt);color:var(--text-subtle)}.skeleton-block{background:linear-gradient(90deg,var(--surface-alt),var(--border),var(--surface-alt));background-size:200% 100%;border-radius:var(--radius);height:96px;animation:shimmer 1.4s ease-in-out infinite}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}@media(prefers-reduced-motion:reduce){.skeleton-block{animation:none}}@media(max-width:520px){.shell{padding:16px 16px 40px}.card{padding:16px}}