:root{--color-bg:#f5f6f8;--color-surface:#fff;--color-text:#1f2329;--color-muted:#646a73;--color-border:#e3e5e8;--color-accent:#1f6feb;--color-accent-text:#fff;--color-danger:#c93c37;--color-danger-bg:#fdf1f0;--color-warn-bg:#fff8e6;--radius:10px;--gap:12px}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--color-bg);color:var(--color-text);-webkit-text-size-adjust:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Arial,sans-serif;font-size:15px;line-height:1.6}code{word-break:break-all;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9em}.page{gap:var(--gap);flex-direction:column;max-width:720px;margin:0 auto;padding:16px 14px 40px;display:flex}.page-centered{justify-content:center;min-height:100vh}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:14px}.card-error{border-color:var(--color-danger);background:var(--color-danger-bg)}.card-title{margin:0 0 6px;font-size:17px;font-weight:600}.card-title-small{font-size:15px}.card-text{color:var(--color-muted);margin:0}.card-meta{color:var(--color-muted);margin:10px 0 0;font-size:13px}.header{justify-content:space-between;align-items:flex-start;gap:var(--gap);flex-wrap:wrap;display:flex}.header-main{min-width:0}.header-title{margin:0;font-size:19px;font-weight:600}.header-subtitle{color:var(--color-muted);flex-wrap:wrap;align-items:center;gap:8px;margin:4px 0 0;font-size:13px;display:flex}.badge{border:1px solid var(--color-border);color:var(--color-muted);background:#f0f1f3;border-radius:999px;padding:1px 8px;font-size:12px;display:inline-block}.badge-active{color:#1f7a3d;background:#eaf7ee;border-color:#b7e3c7}.badge-closed{color:#8c3a36;background:#f6eeee;border-color:#e3c9c8}.summary-list{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px 16px;margin:0;display:grid}.summary-item{min-width:0}.summary-item dt{color:var(--color-muted);margin:0;font-size:12px}.summary-item dd{overflow-wrap:anywhere;margin:2px 0 0}.message-list{flex-direction:column;gap:10px;margin:10px 0 0;padding:0;list-style:none;display:flex}.message{border:1px solid var(--color-border);border-radius:var(--radius);background:#fafbfc;padding:8px 10px}.message-visitor{background:#eef4ff;border-color:#cfe0fb}.message-pending{color:var(--color-muted);border-style:dashed}.message-pending .notice{margin-top:8px}.message-meta{color:var(--color-muted);gap:8px;margin:0 0 2px;font-size:12px;display:flex}.message-text{overflow-wrap:anywhere;white-space:pre-wrap;margin:0}.notice{border-radius:var(--radius);background:var(--color-warn-bg);color:#6b5310;border:1px solid #f0dca8;margin:10px 0 0;padding:8px 10px;font-size:13px}.notice p{margin:0 0 4px}.notice p:last-child{margin-bottom:0}.notice-error{background:var(--color-danger-bg);color:#8c3a36;border-color:#e7c3c1}.notice-pending{color:#234a86;background:#eef4ff;border-color:#cfe0fb}.pending-actions{gap:8px;margin-top:6px;display:inline-flex}.composer{flex-direction:column;gap:8px;display:flex}.composer-label{font-size:14px;font-weight:600}.composer-input{resize:vertical;border:1px solid var(--color-border);border-radius:var(--radius);width:100%;font:inherit;color:inherit;background:var(--color-surface);padding:8px 10px}.composer-input:disabled{color:var(--color-muted);background:#f2f3f5}.button{border:1px solid var(--color-accent);border-radius:var(--radius);background:var(--color-accent);color:var(--color-accent-text);font:inherit;cursor:pointer;align-self:flex-start;padding:8px 16px}.button:disabled{border-color:var(--color-border);color:var(--color-muted);cursor:not-allowed;background:#eceef0}.button-secondary{border-color:var(--color-border);background:var(--color-surface);color:var(--color-text)}.button-small{padding:4px 10px;font-size:13px}.button:focus-visible,.composer-input:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}