:root{--bg:#f6f7f9;--panel:#fff;--border:#e3e6ea;--text:#1f2328;--muted:#6b7280;--primary:#2563eb;--primary-text:#fff;--danger-bg:#fef2f2;--danger-text:#b91c1c;--ok-bg:#ecfdf5;--ok-text:#047857;--warn-text:#b45309}@media (prefers-color-scheme:dark){:root{--bg:#17191c;--panel:#202326;--border:#33383d;--text:#e6e8eb;--muted:#9aa1a9;--primary:#3b82f6;--primary-text:#fff;--danger-bg:#3a1d1d;--danger-text:#fca5a5;--ok-bg:#12332a;--ok-text:#6ee7b7;--warn-text:#fcd34d}}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0;font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,Segoe UI,sans-serif;line-height:1.5}.app{min-height:100vh;display:flex}.sidebar{background:var(--panel);border-right:1px solid var(--border);flex-direction:column;flex-shrink:0;width:220px;padding:16px 12px;display:flex}.brand{padding:8px 12px 20px;font-size:16px;font-weight:700}.nav{flex-direction:column;flex:1;gap:4px;display:flex}.nav-item{color:var(--text);border-radius:8px;padding:10px 12px;text-decoration:none;display:block}.nav-item:hover{background:var(--bg)}.nav-item.active{background:var(--primary);color:var(--primary-text)}.logout{border:1px solid var(--border);color:var(--muted);cursor:pointer;background:0 0;border-radius:8px;margin-top:16px;padding:10px 12px}.logout:hover{color:var(--danger-text);border-color:var(--danger-text)}.content{flex:1;width:100%;max-width:none;padding:24px 28px}.page h1{margin:0 0 18px;font-size:22px}.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;margin-bottom:20px;padding:18px}.card h2{margin:0 0 12px;font-size:16px}.card.narrow{max-width:460px}.settings-grid{grid-template-columns:1fr;align-items:start;gap:20px;display:grid}.settings-grid .card{margin-bottom:0}.settings-grid .card.full{grid-column:auto}.card-header{justify-content:space-between;align-items:flex-start;gap:18px;margin-bottom:16px;display:flex}.card-header h2,.security-card h2,.modal-header h2{margin-bottom:4px}.card-subtitle{color:var(--muted);margin:0;font-size:14px}.card-actions,.button-row{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.setting-list{border-top:1px solid var(--border);margin:0}.setting-list>div{border-bottom:1px solid var(--border);grid-template-columns:minmax(130px,.34fr) 1fr;gap:18px;padding:12px 0;display:grid}.setting-list dt{color:var(--muted);font-size:13px}.setting-list dd{text-align:right;margin:0;font-weight:500}.breakable{overflow-wrap:anywhere}.status-pill{background:var(--bg);color:var(--muted);border-radius:999px;align-items:center;padding:3px 9px;font-size:12px;font-weight:600;display:inline-flex}.status-pill.active{background:var(--ok-bg);color:var(--ok-text)}.status-pill.warning{background:color-mix(in srgb, var(--warn-text) 12%, transparent);color:var(--warn-text)}.security-card{justify-content:space-between;align-items:center;gap:20px;display:flex}.security-card .desc{margin-bottom:0}.form-max{width:100%;max-width:none}.field-row{gap:12px;display:flex}.field-row .field{flex:1}@media (width<=720px){.field-row{flex-direction:column}.card-header,.security-card{flex-direction:column;align-items:stretch}.card-actions .btn,.security-card>.btn{flex:1}.setting-list>div{grid-template-columns:1fr;gap:4px}.setting-list dd{text-align:left}}@media (width<=900px){.settings-grid{grid-template-columns:1fr}}.desc{color:var(--muted);margin:0 0 14px}.desc code{background:var(--bg);border:1px solid var(--border);border-radius:4px;padding:1px 6px}.field{margin-bottom:14px;display:block}.checkbox-row{color:var(--text);align-items:center;gap:9px;margin:4px 0 12px;display:flex}.checkbox-row input{width:17px;height:17px}.field span{color:var(--muted);margin-bottom:6px;font-size:13px;display:block}input,select,textarea{border:1px solid var(--border);background:var(--panel);width:100%;color:var(--text);border-radius:8px;padding:9px 12px;font-size:14px}input:focus,select:focus,textarea:focus{outline:2px solid var(--primary);outline-offset:0;border-color:#0000}.btn{border:1px solid var(--border);background:var(--panel);color:var(--text);cursor:pointer;border-radius:8px;padding:9px 16px;font-size:14px}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.primary{background:var(--primary);color:var(--primary-text);border-color:#0000}.btn.danger{color:var(--danger-text);border-color:color-mix(in srgb, var(--danger-text) 45%, var(--border));background:var(--danger-bg)}.table-scroll{width:100%;overflow-x:auto}.table-actions{flex-wrap:wrap;gap:8px;min-width:180px;display:flex}.internal-stats{grid-template-columns:repeat(3,minmax(150px,1fr));max-width:760px}.one-time-code{border:1px solid var(--border);background:var(--bg);letter-spacing:.28em;text-align:center;border-radius:12px;margin:22px 0 10px;padding:18px;font:700 36px/1.2 ui-monospace,SFMono-Regular,Menlo,monospace}.icon-btn{width:34px;height:34px;color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:8px;font-size:24px;line-height:1}.icon-btn:hover{color:var(--text);background:var(--bg)}.error{background:var(--danger-bg);color:var(--danger-text);border-radius:8px;margin:12px 0;padding:10px 12px;font-size:14px}.ok{background:var(--ok-bg);color:var(--ok-text);border-radius:8px;margin:12px 0;padding:10px 12px;font-size:14px}.hint{color:var(--muted);font-size:13px}.modal-backdrop{z-index:1000;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);background:#0f172a7a;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.modal{border:1px solid var(--border);background:var(--panel);border-radius:16px;width:min(100%,500px);max-height:calc(100vh - 40px);overflow:auto;box-shadow:0 24px 70px #00000040}.modal-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;gap:16px;padding:18px 20px 14px;display:flex}.modal-header h2{margin-top:0;font-size:17px}.modal-body{padding:20px}.modal-actions{justify-content:flex-end;margin-top:18px}.login-wrap{justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex}.login-card{background:var(--panel);border:1px solid var(--border);border-radius:16px;width:360px;padding:28px}.login-title{text-align:center;margin:0 0 22px;font-size:20px}.cards{grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:20px;display:grid}.cards.two{grid-template-columns:repeat(2,1fr)}.cards.stats-cards{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}.stat-card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:18px}.stat-card.warn{border-color:var(--warn-text)}.stat-card.quota{color:#fff;background:linear-gradient(135deg,#2563eb,#6d5ce7);border-color:#0000;box-shadow:0 10px 24px #2563eb2e}.stat-card.quota .stat-label{color:#ffffffc7}.stat-card.total .stat-value{color:#2563eb}.stat-card.today .stat-value{color:#059669}.stat-card.deactivated .stat-value{color:#d97706}.stat-card.limit .stat-value{color:#7c3aed}.stat-value{font-size:28px;font-weight:700}.stat-label{color:var(--muted);margin-top:4px;font-size:13px}@media (width<=1250px){.cards.stats-cards{grid-template-columns:repeat(3,1fr)}}@media (width<=720px){.cards.stats-cards{grid-template-columns:1fr 1fr}}.table{border-collapse:collapse;width:100%;font-size:14px}.table th,.table td{text-align:left;border-bottom:1px solid var(--border);padding:10px 12px}.table th{color:var(--muted);font-size:13px;font-weight:600}.table .empty{text-align:center;color:var(--muted);padding:24px}.clickable-row{cursor:pointer}.clickable-row:hover{background:var(--bg)}.feedback-modal{width:min(100%,720px)}.feedback-content{white-space:pre-wrap;overflow-wrap:anywhere;background:var(--bg);border-radius:10px;margin-bottom:18px;padding:14px}textarea{resize:vertical;font-family:inherit}.filters{align-items:center;gap:10px;margin-bottom:14px;display:flex}.filters .search{width:220px}.filters select{width:auto}.pager{align-items:center;gap:14px;display:flex}@media (width<=720px){.app{flex-direction:column}.sidebar{flex-flow:wrap;align-items:center;width:100%}.nav{flex-direction:row}.cards,.cards.two{grid-template-columns:repeat(2,1fr)}}