:root{--bg:#f4f7fb;--card:#fff;--text:#172033;--muted:#6f7890;--line:#e4e9f2;--primary:#315efb;--danger:#d13b4a;--success:#16865c;--warning:#ad6a00}*{box-sizing:border-box}body{margin:0;font-family:Inter,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text)}a{color:var(--primary);text-decoration:none}.topbar{height:64px;background:#10182a;color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 4%;position:sticky;top:0;z-index:20}.brand{font-size:20px;font-weight:800;color:#fff}.topbar nav{display:flex;gap:20px;align-items:center}.topbar nav a{color:#dce4ff;font-size:14px}.container{max-width:1180px;margin:28px auto;padding:0 18px;min-height:calc(100vh - 130px)}.footer{text-align:center;color:var(--muted);padding:24px}.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:0 8px 30px rgba(29,44,77,.05);margin-bottom:20px}.card h1,.card h2,.card h3{margin-top:0}.grid{display:grid;gap:18px}.grid.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.stat strong{font-size:27px;display:block;margin-top:8px}.muted{color:var(--muted)}.alert{padding:13px 16px;border-radius:10px;margin-bottom:16px}.alert.success{background:#e9f8f1;color:var(--success)}.alert.error{background:#fff0f1;color:var(--danger)}.alert.warning{background:#fff7e8;color:var(--warning)}.form-grid{display:grid;gap:16px}.form-grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.span-2{grid-column:span 2}label{font-size:14px;font-weight:650;display:flex;flex-direction:column;gap:7px}input,select,textarea{width:100%;border:1px solid #cfd7e6;border-radius:10px;padding:11px 12px;background:#fff;color:var(--text);font:inherit}textarea{min-height:100px;resize:vertical}.btn{border:0;border-radius:10px;padding:10px 16px;font-weight:750;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:6px}.btn.primary{background:var(--primary);color:#fff}.btn.secondary{background:#eaf0ff;color:#244bc9}.btn.danger{background:#fff0f1;color:var(--danger)}.btn.success{background:#e9f8f1;color:var(--success)}.btn.small{padding:7px 10px;font-size:13px}.actions{display:flex;gap:8px;flex-wrap:wrap}.table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse;min-width:760px}.table th,.table td{text-align:left;border-bottom:1px solid var(--line);padding:12px 10px;font-size:14px;vertical-align:top}.table th{color:var(--muted);font-size:12px;text-transform:uppercase}.badge{display:inline-block;border-radius:999px;padding:4px 9px;font-size:12px;font-weight:700;background:#edf1f7}.badge.success{background:#e8f8f0;color:var(--success)}.badge.danger{background:#fff0f1;color:var(--danger)}.badge.warning{background:#fff7e8;color:var(--warning)}.auth-bg{background:linear-gradient(135deg,#10182a,#263d83);min-height:100vh}.auth-wrap,.install-wrap{max-width:480px;margin:0 auto;padding:7vh 18px}.install-wrap{max-width:820px}.auth-wrap .card,.install-wrap .card{box-shadow:0 25px 80px rgba(0,0,0,.25)}.plan{position:relative}.plan .price{font-size:34px;font-weight:850}.plan.featured{border:2px solid var(--primary)}.mail-item.unread{font-weight:750}.mail-preview{color:var(--muted);font-weight:400;max-width:500px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.message-body{white-space:pre-wrap;line-height:1.7}.code-box{background:#0f172a;color:#d8e4ff;padding:14px;border-radius:10px;word-break:break-all}.pagination{display:flex;gap:8px;margin-top:18px}.pagination a,.pagination span{padding:8px 11px;background:#fff;border:1px solid var(--line);border-radius:8px}.pagination .active{background:var(--primary);color:#fff}.tabs{display:flex;gap:8px;margin-bottom:16px}.tabs a{padding:9px 12px;border-radius:9px;background:#eaf0ff}.right{text-align:right}.inline{display:inline}.section-title{display:flex;justify-content:space-between;align-items:center;gap:12px}.checkbox{display:flex;flex-direction:row;align-items:center;gap:8px}.checkbox input{width:auto}.danger-text{color:var(--danger)}@media(max-width:850px){.topbar{height:auto;padding:14px 18px;align-items:flex-start;gap:12px;flex-direction:column}.topbar nav{overflow:auto;width:100%;padding-bottom:4px}.grid.cols-2,.grid.cols-3,.grid.cols-4,.form-grid.two{grid-template-columns:1fr}.span-2{grid-column:span 1}.container{margin-top:18px}.card{padding:17px}}