:root{--bg: #f5f6f8;--surface: #ffffff;--border: #e3e6ea;--text: #1c1f23;--muted: #6b7280;--accent: #2563eb;--danger: #dc2626;--ok: #059669;--warn: #d97706;color-scheme:light}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:14px;color:var(--text);background:var(--bg)}h1{font-size:22px;margin:0 0 16px}h2{font-size:16px;margin:24px 0 12px}code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px}.layout{display:grid;grid-template-columns:220px 1fr;min-height:100vh}.sidebar{background:var(--surface);border-right:1px solid var(--border);padding:20px 16px;display:flex;flex-direction:column;gap:24px}.brand{font-weight:600}.sidebar nav{display:flex;flex-direction:column;gap:4px}.sidebar nav a{padding:8px 10px;border-radius:6px;color:var(--text);text-decoration:none}.sidebar nav a:hover{background:var(--bg)}.sidebar nav a.active{background:var(--accent);color:#fff}.sidebar-footer{margin-top:auto;font-size:12px;color:var(--muted)}.content{padding:24px 28px;overflow-x:auto}.page-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;flex-wrap:wrap}.page-actions{display:flex;gap:8px}.page-loading{padding:40px;color:var(--muted)}button,.button{font:inherit;padding:8px 14px;border-radius:6px;border:1px solid var(--accent);background:var(--accent);color:#fff;cursor:pointer;text-decoration:none;display:inline-block}button:disabled{opacity:.5;cursor:not-allowed}button.secondary,.button.secondary{background:var(--surface);color:var(--text);border-color:var(--border)}button.danger{background:var(--danger);border-color:var(--danger)}button.link{background:none;border:none;color:var(--accent);padding:0}input,select,textarea{font:inherit;padding:8px 10px;border:1px solid var(--border);border-radius:6px;background:var(--surface);color:var(--text)}textarea{resize:vertical;width:100%}.filters{display:flex;gap:12px;align-items:center;margin-bottom:16px;flex-wrap:wrap}.filters input[type=search]{min-width:280px}.field{display:flex;flex-direction:column;gap:6px;margin:12px 0}.check{display:flex;align-items:center;gap:8px;margin:8px 0}.check.inline{margin:0}.grid{width:100%;border-collapse:collapse;background:var(--surface);border:1px solid var(--border);border-radius:8px;overflow:hidden}.grid th,.grid td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border);vertical-align:top}.grid th{font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.03em;color:var(--muted);background:var(--bg)}.grid tr:last-child td{border-bottom:none}.muted{color:var(--muted);font-size:12px}.pagination{display:flex;gap:12px;align-items:center;margin-top:16px;color:var(--muted)}.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;border:1px solid var(--border);background:var(--bg);white-space:nowrap}.badge-active_paid,.badge-payment-ok,.badge-action-OK{background:#ecfdf5;border-color:#a7f3d0;color:var(--ok)}.badge-active_trial,.badge-thread-PENDING{background:#eff6ff;border-color:#bfdbfe;color:var(--accent)}.badge-privileged{background:#f5f3ff;border-color:#ddd6fe;color:#6d28d9}.badge-expired,.badge-payment-fail,.badge-action-FAILED{background:#fef2f2;border-color:#fecaca;color:var(--danger)}.badge-payment-refund,.badge-thread-OPEN,.badge-action-PENDING{background:#fffbeb;border-color:#fde68a;color:var(--warn)}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;margin:20px 0}.card{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:16px}.card h2{margin:0 0 12px}.card dl{display:grid;grid-template-columns:minmax(120px,auto) 1fr;gap:6px 12px;margin:0}.card dt{color:var(--muted);font-size:12px}.card dd{margin:0}.admin-create-form{max-width:520px;margin-top:20px}.error{background:#fef2f2;border:1px solid #fecaca;color:var(--danger);padding:10px 12px;border-radius:6px;margin:12px 0}.success{background:#ecfdf5;border:1px solid #a7f3d0;color:var(--ok);padding:10px 12px;border-radius:6px;margin:12px 0}.hint{color:var(--muted);font-size:12px;margin:4px 0 12px}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a73;display:flex;align-items:center;justify-content:center;padding:24px}.modal{background:var(--surface);border-radius:10px;padding:24px;width:min(520px,100%);max-height:90vh;overflow-y:auto}.modal h2{margin-top:0}.modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:20px}.refund-calc{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:12px 14px;margin-bottom:16px}.refund-row{display:flex;justify-content:space-between;gap:12px;padding:4px 0}.refund-total{border-top:1px solid var(--border);margin-top:6px;padding-top:8px;font-size:15px}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center}.login-form{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:28px;width:min(360px,100%)}.login-form h1{font-size:18px}.login-form button{width:100%;margin-top:8px}.segmented{display:flex;gap:4px}.support-layout{--support-height: calc(100vh - 170px) ;display:grid;grid-template-columns:minmax(300px,380px) minmax(360px,1fr) minmax(260px,320px);gap:16px;align-items:start}.support-feed,.support-conversation,.support-user{background:var(--surface);border:1px solid var(--border);border-radius:8px;height:var(--support-height);min-height:420px;overflow-y:auto}.support-feed{padding:8px}.feed-earlier{width:100%;margin-bottom:8px}.feed-item{display:block;width:100%;text-align:left;background:none;border:none;border-bottom:1px solid var(--border);border-radius:0;color:var(--text);padding:10px 6px}.feed-item:hover{background:var(--bg)}.feed-item.active{background:#eff6ff}.feed-item-admin,.feed-item-system{opacity:.75}.feed-head{display:flex;align-items:baseline;gap:6px;min-width:0}.feed-head strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.feed-handle{font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.feed-body{margin:4px 0;overflow:hidden;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;white-space:pre-wrap;word-break:break-word}.feed-meta{display:flex;justify-content:space-between;align-items:center;font-size:12px}.unread-dot{flex:none;width:8px;height:8px;border-radius:50%;background:var(--danger);align-self:center}.support-conversation{padding:16px;display:flex;flex-direction:column}.support-conversation .messages{min-height:0}.message-highlight{box-shadow:0 0 0 2px var(--accent)}.support-user{padding:16px}.support-user-ids{margin:-6px 0 12px;word-break:break-all}.support-user h3{margin:16px 0 8px;font-size:14px}.support-user-payments{list-style:none;padding:0;margin:0 0 16px;font-size:12px}.support-user-payments li{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:4px 0;border-bottom:1px solid var(--border)}.nav-count{float:right;background:var(--danger);color:#fff;border-radius:999px;padding:0 7px;font-size:11px;line-height:18px}@media (max-width: 1280px){.support-layout{grid-template-columns:minmax(280px,360px) 1fr}.support-user{grid-column:1 / -1;height:auto;min-height:0}}@media (max-width: 860px){.support-layout{grid-template-columns:1fr}.support-feed,.support-conversation{height:70vh}}.messages{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:10px;padding:12px 0}.message{border:1px solid var(--border);border-radius:8px;padding:10px 12px;max-width:75%}.message-user{align-self:flex-start;background:var(--bg)}.message-admin{align-self:flex-end;background:#eff6ff;border-color:#bfdbfe}.message-system{align-self:center;background:#fffbeb;border-color:#fde68a;font-size:12px}.message-meta{color:var(--muted);font-size:11px;margin-bottom:4px}.message-body{white-space:pre-wrap}.reply{display:flex;gap:8px;align-items:flex-end;border-top:1px solid var(--border);padding-top:12px}