:root {
    --bg: #f6f7f9;
    --card: #ffffff;
    --ink: #1b1d21;
    --ink-2: #5a6070;
    --ink-3: #8b91a1;
    --line: #e3e6ec;
    --brand: #2f6bff;
    --brand-2: #1f4fd0;
    --ok: #18895b;
    --warn: #a86a00;
    --err: #c0392b;
    --radius: 10px;
  }
  * { box-sizing: border-box; }
  body {
    margin: 0; background: var(--bg); color: var(--ink);
    font: 14px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  }
  a { color: var(--brand); text-decoration: none; cursor: pointer; }
  .wrap { max-width: 1080px; margin: 0 auto; padding: 24px 20px 64px; }
  header {
    display: flex; align-items: center; justify-content: space-between;
    gap: 12px; margin-bottom: 20px;
  }
  h1 { font-size: 18px; margin: 0; font-weight: 600; letter-spacing: .2px; }
  h1 span { color: var(--ink-3); font-weight: 400; font-size: 13px; margin-left: 8px; }
  .card {
    background: var(--card); border: 1px solid var(--line);
    border-radius: var(--radius); padding: 18px;
  }
  .card + .card { margin-top: 14px; }
  .row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
  .spread { justify-content: space-between; }
  label { display: block; font-size: 13px; color: var(--ink-2); margin-bottom: 5px; }
  input {
    width: 100%; padding: 9px 11px; border: 1px solid var(--line);
    border-radius: 8px; font: inherit; background: #fff; color: var(--ink);
  }
  input:focus { outline: 2px solid #c9d8ff; border-color: var(--brand); }
  button {
    padding: 8px 14px; border: 1px solid var(--line); background: #fff;
    color: var(--ink); border-radius: 8px; font: inherit; cursor: pointer;
    transition: background .12s, border-color .12s;
  }
  button:hover:not(:disabled) { background: #f2f4f8; }
  button:disabled { opacity: .55; cursor: not-allowed; }
  button.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
  button.primary:hover:not(:disabled) { background: var(--brand-2); }
  button.ghost { border-color: transparent; color: var(--ink-2); padding: 6px 8px; }
  button.ghost:hover:not(:disabled) { background: #f2f4f8; }
  button.xs { padding: 4px 9px; font-size: 12.5px; border-radius: 6px; }
  .muted { color: var(--ink-3); font-size: 12.5px; }
  .tag {
    display: inline-block; padding: 1px 7px; border-radius: 20px;
    font-size: 12px; line-height: 18px; border: 1px solid var(--line); color: var(--ink-2);
    background: #fafbfc;
  }
  .tag.ok { color: var(--ok); border-color: #bfe3d2; background: #f2fbf7; }
  .tag.warn { color: var(--warn); border-color: #f0dca8; background: #fffbf0; }
  .tag.err { color: var(--err); border-color: #f1c3bd; background: #fff5f4; }
  .tag.mute { color: var(--ink-3); }
  .acct {
    display: flex; align-items: center; justify-content: space-between;
    gap: 12px; padding: 11px 0; border-bottom: 1px dashed var(--line);
  }
  .acct:last-child { border-bottom: 0; padding-bottom: 0; }
  .acct .nm { font-weight: 600; }
  .acct .id { color: var(--ink-3); font-size: 12px; font-family: ui-monospace, Menlo, monospace; }
  .acct.active { background: #f5f8ff; margin: 0 -18px; padding: 11px 18px; border-radius: 8px; }
  table { width: 100%; border-collapse: collapse; }
  th, td { text-align: left; padding: 9px 8px; border-bottom: 1px solid var(--line); vertical-align: middle; }
  th { font-size: 12.5px; color: var(--ink-3); font-weight: 500; }
  td.code { font-family: ui-monospace, Menlo, monospace; font-size: 12.5px; }
  td.acts { text-align: right; white-space: nowrap; }
  .empty { padding: 26px 6px; text-align: center; color: var(--ink-3); }
  /* 窄屏放不下的表格横向滚动，而不是把整页撑出横向溢出 */
  .tbl { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .tbl table { min-width: 560px; }
  .tbl td { word-break: break-word; }
  .toast {
    position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%);
    background: #1b1d21; color: #fff; padding: 10px 16px; border-radius: 8px;
    font-size: 13px; box-shadow: 0 8px 24px rgba(0,0,0,.18); z-index: 99;
    max-width: 80vw;
  }
  .toast.err { background: #a83224; }
  .modal {
    position: fixed; inset: 0; background: rgba(20,22,28,.42);
    display: flex; align-items: center; justify-content: center; padding: 20px; z-index: 50;
  }
  .modal[hidden] { display: none; }
  .modal .box {
    background: #fff; border-radius: 12px; width: 100%; max-width: 520px;
    padding: 20px; box-shadow: 0 20px 60px rgba(0,0,0,.2);
  }
  .modal h2 { font-size: 16px; margin: 0 0 12px; }
  .linkbox {
    word-break: break-all; background: #f5f7fb; border: 1px solid var(--line);
    border-radius: 8px; padding: 10px; font-size: 12.5px; margin: 10px 0;
    font-family: ui-monospace, Menlo, monospace;
  }
  .detail { margin-top: 14px; border-top: 1px solid var(--line); padding-top: 12px; }
  .detail .line { padding: 2px 0; font-size: 13px; overflow-wrap: anywhere; }
  .detail .sum { color: var(--ink-2); margin-bottom: 6px; }
  .ok-mark { color: var(--ok); }
  .err-mark { color: var(--err); }
  .warn-mark { color: var(--warn); }
  .spin {
    display: inline-block; width: 12px; height: 12px; border: 2px solid #cfd6e4;
    border-top-color: var(--brand); border-radius: 50%; animation: sp .7s linear infinite;
    vertical-align: -2px; margin-right: 6px;
  }
  @keyframes sp { to { transform: rotate(360deg); } }
  .hide { display: none !important; }
  code { background: #f2f4f8; padding: 1px 5px; border-radius: 4px; font-size: 12.5px; }

  /* 卡密登录 */
  .login-card { max-width: 440px; margin: 8vh auto 0; padding: 30px 26px 24px; }
  .login-card h2 { font-size: 20px; margin: 0 0 6px; letter-spacing: .3px; }
  .login-card p.lead { margin: 0 0 22px; color: var(--ink-2); font-size: 13px; }
  .key-field { display: flex; align-items: stretch; }
  .key-field input {
    border-radius: 8px; font: 15px ui-monospace, Menlo, monospace;
    letter-spacing: 2px; text-transform: uppercase;
  }
  .login-actions { margin-top: 16px; }
  .login-actions button { width: 100%; padding: 11px; font-size: 15px; }
  .foot { text-align: center; margin-top: 20px; }

  /* 管理页 */
  .admin-grid { display: grid; grid-template-columns: repeat(3, 1fr) 2fr; gap: 10px; }
  @media (max-width: 720px) {
    .admin-grid { grid-template-columns: 1fr 1fr; }
    .admin-grid .wide { grid-column: span 2; }
  }
  .keys-out {
    width: 100%; min-height: 120px; margin-top: 12px; padding: 10px;
    border: 1px dashed #bfd0f5; border-radius: 8px; background: #f7faff;
    font: 13px/1.8 ui-monospace, Menlo, monospace; color: var(--ink); resize: vertical;
  }
  .stat { display: flex; gap: 18px; flex-wrap: wrap; color: var(--ink-2); font-size: 13px; }
  .stat b { color: var(--ink); }
  .mask { font-family: ui-monospace, Menlo, monospace; font-size: 12.5px; letter-spacing: .5px; }
  .notice-ta {
    width: 100%; min-height: 88px; padding: 9px 11px; border: 1px solid var(--line);
    border-radius: 8px; font: inherit; color: var(--ink); background: #fff; resize: vertical;
  }
  .notice-ta:focus { outline: 2px solid #c9d8ff; border-color: var(--brand); }
  #noticeBody { white-space: pre-wrap; word-break: break-word; margin: 0; font-size: 14px; }
  .banner {
    border: 1px solid #f0dca8; background: #fffbf0; color: var(--warn);
    border-radius: 8px; padding: 9px 11px; font-size: 12.5px; margin-top: 10px;
  }
  .banner.info { border-color: #cddbf7; background: #f5f8ff; color: var(--brand-2); }

  /* ---- 移动端适配 ----
     断点 560px：手机竖屏。目标是不产生横向溢出：
     表格进滚动容器、账号行纵排、弹窗限高、输入 16px 防 iOS 聚焦缩放。 */
  @media (max-width: 560px) {
    .wrap { padding: 14px 12px 48px; }
    header { flex-wrap: wrap; row-gap: 8px; }
    h1 span { display: block; margin-left: 0; }
    .admin-grid { grid-template-columns: 1fr; }
    .admin-grid .wide { grid-column: span 1; }
    .login-card { margin: 3vh auto 0; padding: 24px 18px 20px; }
    .card { padding: 14px; }
    .acct { flex-direction: column; align-items: stretch; gap: 8px; }
    .acct.active { margin: 0 -14px; padding: 11px 14px; }
    .acct .row { justify-content: flex-start; }
    .stat { gap: 10px; }
    .toast { max-width: 92vw; }
    .modal { padding: 12px; align-items: flex-end; }
    .modal .box { max-height: 86vh; overflow-y: auto; padding: 16px; }
    input, textarea { font-size: 16px; }
    .keys-out, td.code { font-size: 12px; }
  }