:root {
  --bg: #0b0f17;
  --panel: #131a26;
  --panel-2: #1a2331;
  --line: #263245;
  --txt: #e6edf6;
  --dim: #8296ad;
  --acc: #2f8fff;
  --acc-2: #00e676;
  --danger: #ff4d5e;
  --warn: #ffb020;
  --radius: 12px;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--txt);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.6;
}

a { color: var(--acc); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 20px; }
.wrap-sm { max-width: 460px; margin: 0 auto; padding: 20px; }

/* ---------- 顶栏 ---------- */
.topbar {
  display: flex; align-items: center; gap: 14px;
  padding: 12px 20px; background: var(--panel);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 50; flex-wrap: wrap;
}
.topbar .brand { font-weight: 700; font-size: 17px; letter-spacing: .5px; }
.topbar .brand span { color: var(--acc-2); }
.topbar .spacer { flex: 1; }
.topbar .who { color: var(--dim); font-size: 13px; }

/* ---------- 卡片 ---------- */
.card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px; margin-bottom: 16px;
}
.card h2, .card h3 { margin: 0 0 14px; font-size: 16px; }
.card h3 { font-size: 14px; color: var(--dim); text-transform: uppercase; letter-spacing: 1px; font-weight: 600; }

/* ---------- 表单 ---------- */
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; color: var(--dim); margin-bottom: 6px; }
input, select, textarea {
  width: 100%; padding: 10px 12px;
  background: var(--panel-2); border: 1px solid var(--line);
  border-radius: 8px; color: var(--txt); font-size: 15px;
  font-family: inherit; outline: none; transition: border-color .15s;
}
input:focus, select:focus, textarea:focus { border-color: var(--acc); }
input[type=color] { padding: 3px; height: 42px; cursor: pointer; }
input[type=range] { padding: 0; }
input[type=file] { padding: 8px; font-size: 13px; }
input[type=checkbox] { width: auto; accent-color: var(--acc); }
.row { display: flex; gap: 10px; flex-wrap: wrap; }
.row > * { flex: 1; min-width: 120px; }
.row-tight { display: flex; gap: 8px; align-items: center; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 18px; border-radius: 8px; border: 1px solid var(--line);
  background: var(--panel-2); color: var(--txt); font-size: 14px;
  font-weight: 600; cursor: pointer; transition: .15s; font-family: inherit;
  white-space: nowrap; user-select: none;
}
.btn:hover { background: #223049; }
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.primary { background: var(--acc); border-color: var(--acc); color: #fff; }
.btn.primary:hover { background: #4a9dff; }
.btn.ok { background: var(--acc-2); border-color: var(--acc-2); color: #04220f; }
.btn.ok:hover { background: #37f393; }
.btn.danger { background: transparent; border-color: #5a2730; color: var(--danger); }
.btn.danger:hover { background: #2a1418; }
.btn.sm { padding: 6px 12px; font-size: 13px; }
.btn.block { width: 100%; }

/* ---------- 表格 ---------- */
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 10px 8px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { color: var(--dim); font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .5px; }
tbody tr:hover { background: #172030; }

/* ---------- 标签 ---------- */
.tag {
  display: inline-block; padding: 2px 9px; border-radius: 20px;
  font-size: 12px; font-weight: 600; line-height: 1.7;
}
.tag.ok { background: #0d3320; color: #37e07f; }
.tag.pending { background: #3a2e0c; color: var(--warn); }
.tag.off { background: #331a1e; color: #ff7b88; }
.tag.info { background: #10263f; color: #5aa8ff; }
.tag.gray { background: #1e2836; color: var(--dim); }

/* ---------- 提示 ---------- */
.msg { padding: 10px 14px; border-radius: 8px; font-size: 14px; margin-bottom: 14px; display: none; }
.msg.show { display: block; }
.msg.err { background: #2a1418; color: #ff8b96; border: 1px solid #5a2730; }
.msg.ok { background: #0d2a1c; color: #4fe08c; border: 1px solid #1d5136; }
.msg.warn { background: #2e2508; color: #ffc94d; border: 1px solid #574410; }

.muted { color: var(--dim); font-size: 13px; }
.mono { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 13px; }
.empty { text-align: center; color: var(--dim); padding: 30px 10px; font-size: 14px; }

/* ---------- 网格 ---------- */
.grid { display: grid; gap: 14px; }
.grid.c2 { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.grid.c3 { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
.grid.c4 { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }

.stat { background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px; padding: 14px; text-align: center; }
.stat b { display: block; font-size: 26px; color: var(--acc-2); line-height: 1.3; }
.stat span { font-size: 12px; color: var(--dim); }

/* ---------- 弹层 ---------- */
.modal-mask {
  position: fixed; inset: 0; background: rgba(0,0,0,.72); backdrop-filter: blur(3px);
  display: none; align-items: center; justify-content: center; z-index: 200; padding: 16px;
}
.modal-mask.show { display: flex; }
.modal {
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  padding: 22px; width: 100%; max-width: 480px; max-height: 88vh; overflow: auto;
}
.modal h3 { margin: 0 0 16px; font-size: 17px; color: var(--txt); text-transform: none; letter-spacing: 0; }

/* ---------- 屏幕卡片 ---------- */
.screen-card { background: var(--panel-2); border: 1px solid var(--line); border-radius: 12px; padding: 14px; }
.screen-card .t { font-weight: 700; margin-bottom: 4px; display: flex; align-items: center; gap: 8px; }
.screen-card .u { font-size: 11px; color: var(--dim); word-break: break-all; background: #0d131d; padding: 6px 8px; border-radius: 6px; margin: 8px 0; font-family: ui-monospace, Consolas, monospace; }
.screen-card .acts { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 10px; }

.qrbox { background: #fff; padding: 12px; border-radius: 10px; display: inline-block; }
.qrbox img { display: block; width: 240px; height: 240px; }

/* 缩略图 */
.thumb { width: 100%; height: 96px; object-fit: cover; border-radius: 8px; border: 1px solid var(--line); background: #0d131d; }

@media (max-width: 640px) {
  body { font-size: 14px; }
  .wrap { padding: 12px; }
  th:nth-child(n+5), td:nth-child(n+5) { display: none; }
}