:root{--brand: #2b6cf6;--brand-hover: #1f57d6;--brand-contrast: #ffffff;--bg: #f4f5f7;--surface: #ffffff;--surface-2: #f7f8fa;--border: #e6e8ec;--text: #16181d;--text-muted: #6b7280;--text-faint: #9aa1ac;--danger: #d92d20;--danger-bg: #fef3f2;--success: #067647;--radius: 12px;--radius-sm: 8px;--shadow-card: 0 1px 2px rgba(16, 24, 40, .06);--shadow-pop: 0 8px 30px rgba(16, 24, 40, .16);--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px);color-scheme:light dark;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}@media(prefers-color-scheme:dark){:root{--brand: #5b8cff;--brand-hover: #7aa1ff;--brand-contrast: #0b1020;--bg: #0f1115;--surface: #191c22;--surface-2: #21252d;--border: #2a2f38;--text: #eef1f5;--text-muted: #9aa1ac;--text-faint: #6b7280;--danger: #ff6b5e;--danger-bg: #2a1714;--success: #4ade80;--shadow-card: 0 1px 2px rgba(0, 0, 0, .4);--shadow-pop: 0 8px 30px rgba(0, 0, 0, .5)}}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%}body{background:var(--bg);color:var(--text);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}a{color:var(--brand);text-decoration:none}button{font-family:inherit;cursor:pointer}input,textarea,select{font-family:inherit;font-size:16px;color:var(--text)}.app{max-width:640px;margin:0 auto;min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;background:var(--bg)}.app-header{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:8px;padding:calc(var(--safe-top) + 10px) 12px 10px;background:color-mix(in srgb,var(--bg) 85%,transparent);-webkit-backdrop-filter:saturate(180%) blur(10px);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--border)}.app-header h1{font-size:17px;font-weight:600;margin:0;flex:1;text-align:center}.header-btn{min-width:56px;height:32px;padding:0 8px;border:none;background:transparent;color:var(--brand);font-size:15px;border-radius:var(--radius-sm);display:inline-flex;align-items:center;gap:2px}.header-btn:active{background:var(--surface-2)}.header-btn.right{justify-content:flex-end}.header-spacer{min-width:56px}.app-main{flex:1;padding:16px 12px calc(var(--safe-bottom) + 16px)}.brand-header{margin-bottom:18px}.brand-banner{width:100%;max-height:160px;object-fit:cover;border-radius:var(--radius);display:block;border:1px solid var(--border)}.brand-icon-row{display:flex;justify-content:center;margin-top:-28px}.brand-header:not(:has(.brand-banner)) .brand-icon-row{margin-top:0}.brand-icon{width:56px;height:56px;border-radius:14px;object-fit:cover;border:2px solid var(--surface);background:var(--surface);box-shadow:var(--shadow-card)}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-card)}.section{margin-bottom:18px}.field-label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}.field-label .tag{font-weight:400;color:var(--text-faint);font-size:12px;margin-left:6px}.field-hint{font-size:12px;color:var(--text-muted);margin-top:6px}.field-error{font-size:13px;color:var(--danger);margin-top:6px}.textarea{width:100%;min-height:140px;padding:12px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);resize:vertical;line-height:1.6}.textarea:focus,.text-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px color-mix(in srgb,var(--brand) 18%,transparent)}.text-input{width:100%;height:46px;padding:0 12px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface)}.char-counter{text-align:right;font-size:12px;color:var(--text-faint);margin-top:6px}.char-counter.over{color:var(--danger)}.chips{display:flex;flex-wrap:wrap;gap:8px}.chip{padding:9px 14px;border:1px solid var(--border);border-radius:999px;background:var(--surface);color:var(--text);font-size:14px}.chip.active{border-color:var(--brand);background:color-mix(in srgb,var(--brand) 12%,var(--surface));color:var(--brand);font-weight:600}.chip:active{transform:scale(.97)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:48px;padding:0 18px;border:none;border-radius:var(--radius);font-size:16px;font-weight:600}.btn-primary{background:var(--brand);color:var(--brand-contrast);width:100%}.btn-primary:active{background:var(--brand-hover)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-ghost{background:var(--surface);border:1px solid var(--border);color:var(--text)}.btn-danger{background:var(--danger);color:#fff}.btn-text{background:transparent;border:none;color:var(--brand);font-size:15px;height:auto;padding:6px 0}.btn-text.danger{color:var(--danger)}.action-bar{position:sticky;bottom:0;padding:12px 12px calc(var(--safe-bottom) + 12px);background:color-mix(in srgb,var(--bg) 88%,transparent);-webkit-backdrop-filter:saturate(180%) blur(10px);backdrop-filter:saturate(180%) blur(10px);border-top:1px solid var(--border)}.attachments{display:flex;flex-wrap:wrap;gap:10px}.attach-thumb{position:relative;width:84px;height:84px;border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--border);background:var(--surface-2)}.attach-thumb img{width:100%;height:100%;object-fit:cover;display:block}.attach-remove{position:absolute;top:2px;right:2px;width:22px;height:22px;border-radius:50%;border:none;background:#0009;color:#fff;font-size:14px;line-height:1;display:flex;align-items:center;justify-content:center}.attach-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;text-align:center;padding:4px;font-size:11px;color:#fff;background:#0000008c}.attach-overlay.error{background:#d92d20b8;flex-direction:column;gap:4px}.attach-add{width:84px;height:84px;border-radius:var(--radius-sm);border:1px dashed var(--border);background:var(--surface-2);color:var(--text-muted);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;font-size:12px}.attach-add span.plus{font-size:22px;line-height:1}.context-summary{padding:12px 14px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius);font-size:13px;color:var(--text-muted)}.context-summary .title{font-weight:600;color:var(--text);margin-bottom:6px;font-size:13px}.context-summary dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:4px 12px}.context-summary dt{color:var(--text-faint)}.context-summary dd{margin:0;color:var(--text);word-break:break-word}.privacy-note{font-size:12px;color:var(--text-muted);line-height:1.6}.submit-notice{display:flex;gap:8px;align-items:flex-start;padding:12px 14px;margin-bottom:16px;border-radius:var(--radius-sm);background:color-mix(in srgb,#d97706 12%,var(--surface));border:1px solid color-mix(in srgb,#d97706 32%,transparent);color:var(--text)}.submit-notice-icon{flex:none;font-size:16px;line-height:1.5;color:#b45309}.submit-notice-text{font-size:13px;line-height:1.6;white-space:pre-line;word-break:break-word}.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600;line-height:1.5}.badge.open{background:color-mix(in srgb,var(--brand) 14%,transparent);color:var(--brand)}.badge.in_progress{background:color-mix(in srgb,#d97706 16%,transparent);color:#b45309}.badge.waiting_user{background:color-mix(in srgb,#7c3aed 16%,transparent);color:#6d28d9}.badge.resolved{background:color-mix(in srgb,var(--success) 16%,transparent);color:var(--success)}.badge.closed{background:var(--surface-2);color:var(--text-muted)}@media(prefers-color-scheme:dark){.badge.in_progress{color:#fbbf24}.badge.waiting_user{color:#c4b5fd}}.list{display:flex;flex-direction:column;gap:12px}.list-item{padding:14px;display:block;color:inherit}.list-item:active{background:var(--surface-2)}.list-item-top{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:6px}.list-item-number{font-size:13px;color:var(--text-muted);font-variant-numeric:tabular-nums}.list-item-category{font-size:15px;font-weight:600;margin-bottom:4px}.list-item-meta{font-size:12px;color:var(--text-faint)}.timeline{display:flex;flex-direction:column;gap:14px}.msg{display:flex;flex-direction:column;max-width:88%}.msg.user{align-self:flex-end;align-items:flex-end}.msg.admin,.msg.system{align-self:flex-start;align-items:flex-start}.msg-author{font-size:12px;color:var(--text-faint);margin-bottom:4px}.msg-bubble{padding:10px 12px;border-radius:var(--radius);font-size:15px;white-space:pre-wrap;word-break:break-word}.msg.user .msg-bubble{background:var(--brand);color:var(--brand-contrast);border-bottom-right-radius:4px}.msg.admin .msg-bubble{background:var(--surface);border:1px solid var(--border);border-bottom-left-radius:4px}.msg.system .msg-bubble{background:var(--surface-2);color:var(--text-muted);font-size:13px;text-align:center}.msg-time{font-size:11px;color:var(--text-faint);margin-top:4px}.msg-attachments{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}.msg-attachments a{display:block;width:120px;border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--border)}.msg-attachments img{width:100%;display:block}.state{text-align:center;padding:48px 24px;color:var(--text-muted)}.state h2{font-size:18px;color:var(--text);margin:0 0 8px}.state p{margin:0 0 20px;font-size:14px}.state .btn{width:auto;padding:0 24px}.spinner{width:26px;height:26px;border:3px solid var(--border);border-top-color:var(--brand);border-radius:50%;animation:spin .7s linear infinite;margin:0 auto 14px}@keyframes spin{to{transform:rotate(360deg)}}.banner{padding:10px 12px;font-size:13px;text-align:center}.banner.maintenance{background:var(--danger-bg);color:var(--danger)}.banner.degraded{background:color-mix(in srgb,#d97706 14%,transparent);color:#b45309}.inline-error{background:var(--danger-bg);color:var(--danger);padding:10px 12px;border-radius:var(--radius-sm);font-size:13px;margin-bottom:12px}.toast{position:fixed;left:50%;bottom:calc(var(--safe-bottom) + 28px);transform:translate(-50%);background:#000000d1;color:#fff;padding:10px 18px;border-radius:999px;font-size:14px;z-index:50;max-width:90%;text-align:center}.modal-backdrop{position:fixed;inset:0;background:#00000073;display:flex;align-items:flex-end;justify-content:center;z-index:100;padding:12px;padding-bottom:calc(var(--safe-bottom) + 12px)}.modal{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow-pop);width:100%;max-width:420px;padding:20px}.modal h3{margin:0 0 8px;font-size:17px}.modal p{margin:0 0 20px;font-size:14px;color:var(--text-muted);line-height:1.6}.modal-actions{display:flex;gap:10px}.modal-actions .btn{flex:1}.success{text-align:center;padding:40px 24px}.success-check{width:64px;height:64px;border-radius:50%;background:color-mix(in srgb,var(--success) 16%,transparent);color:var(--success);font-size:34px;display:flex;align-items:center;justify-content:center;margin:0 auto 16px}.success h2{font-size:20px;margin:0 0 8px}.success p{color:var(--text-muted);font-size:14px;margin:0 0 20px}.success-number{display:inline-block;font-size:18px;font-weight:700;letter-spacing:.5px;padding:10px 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8px;font-size:14px;color:var(--text);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;word-break:break-word}.board-meta{display:flex;align-items:center;justify-content:space-between;gap:8px}.board-more{text-align:center;padding:18px 0 4px}.board-more .btn{width:auto;padding:0 28px}.board-nomore{font-size:12px;color:var(--text-faint)}.checkbox-row{display:flex;align-items:flex-start;gap:10px;cursor:pointer}.checkbox-row input[type=checkbox]{width:20px;height:20px;margin-top:1px;accent-color:var(--brand);flex-shrink:0}.checkbox-text{font-size:15px;font-weight:600;color:var(--text)}