:root {
      --bg: #031b34;
      --bg-deep: #001327;
      --panel: rgba(9, 55, 91, 0.86);
      --panel-strong: rgba(13, 74, 115, 0.92);
      --panel-soft: rgba(18, 91, 132, 0.42);
      --line: rgba(93, 191, 255, 0.32);
      --line-strong: rgba(99, 213, 255, 0.64);
      --text: #e8f7ff;
      --muted: #92b9d1;
      --blue: #5d93ff;
      --cyan: #49d6ff;
      --green: #5ee1b5;
      --yellow: #ffc857;
      --orange: #ff8b3d;
      --red: #ff5c66;
      --shadow: 0 18px 50px rgba(0, 8, 20, 0.42);
      --radius: 18px;
      --font: "Microsoft YaHei", "Source Han Sans SC", "PingFang SC", sans-serif;
      --num: "DIN Alternate", "Bahnschrift", "Microsoft YaHei", sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    html,
    body {
      width: 100vw;
      height: 100vh;
      margin: 0;
      background:
        radial-gradient(circle at 14% 8%, rgba(29, 126, 177, 0.38), transparent 30%),
        radial-gradient(circle at 86% 12%, rgba(31, 95, 155, 0.28), transparent 34%),
        linear-gradient(180deg, #02152b 0%, #062b4a 48%, #031b34 100%);
      color: var(--text);
      font-family: var(--font);
      overflow: hidden;
    }

    button,
    input,
    select {
      font-family: inherit;
    }

    .screen {
      position: absolute;
      left: 0;
      top: 0;
      width: 1920px;
      height: 1080px;
      min-height: 1080px;
      margin: 0;
      padding: 14px 18px 18px;
      overflow: hidden;
      isolation: isolate;
      transform-origin: left top;
    }

    .screen::before {
      content: "";
      position: absolute;
      inset: 0;
      z-index: -2;
      background-image:
        linear-gradient(rgba(89, 185, 255, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(89, 185, 255, 0.05) 1px, transparent 1px);
      background-size: 100% 28px, 28px 100%;
      opacity: 0.8;
      pointer-events: none;
    }

    .screen::after {
      content: "";
      position: absolute;
      inset: auto 0 0;
      height: 38vh;
      z-index: -1;
      background: linear-gradient(180deg, transparent, rgba(0, 11, 23, 0.62));
      pointer-events: none;
    }

    .topbar {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 14px;
      align-items: start;
      margin-bottom: 8px;
    }

    .title-zone {
      display: flex;
      align-items: center;
      gap: 16px;
      min-width: 0;
    }

    .brand-mark {
      position: relative;
      width: 52px;
      height: 52px;
      border-radius: 16px;
      background:
        linear-gradient(135deg, rgba(85, 214, 255, 0.96), rgba(45, 110, 255, 0.72)),
        linear-gradient(180deg, rgba(255, 255, 255, 0.36), transparent);
      box-shadow: 0 0 30px rgba(73, 214, 255, 0.34), inset 0 0 18px rgba(255, 255, 255, 0.18);
      overflow: hidden;
      flex: 0 0 auto;
    }

    .brand-mark::before,
    .brand-mark::after {
      content: "";
      position: absolute;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.86);
    }

    .brand-mark::before {
      width: 30px;
      height: 8px;
      left: 14px;
      top: 16px;
      box-shadow: 0 14px 0 rgba(255, 255, 255, 0.76), 0 28px 0 rgba(255, 255, 255, 0.56);
    }

    .brand-mark::after {
      width: 8px;
      height: 8px;
      right: 13px;
      top: 16px;
      box-shadow: 0 14px 0 rgba(255, 255, 255, 0.76), 0 28px 0 rgba(255, 255, 255, 0.56);
    }

    .title-text {
      min-width: 0;
    }

    .eyebrow {
      color: var(--cyan);
      font-size: 13px;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      margin-bottom: 4px;
    }

    h1 {
      margin: 0;
      font-size: clamp(26px, 2.6vw, 42px);
      line-height: 1.1;
      letter-spacing: 0.04em;
      text-shadow: 0 0 22px rgba(83, 202, 255, 0.44);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .purpose {
      margin-top: 6px;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.5;
    }

    .header-actions {
      display: grid;
      gap: 8px;
      justify-items: end;
    }

    .top-meta-row {
      display: flex;
      align-items: center;
      gap: 10px;
      justify-content: flex-end;
    }

    .source-download {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 36px;
      padding: 8px 14px;
      border: 1px solid rgba(83, 191, 255, 0.42);
      border-radius: 14px;
      color: #e7f8ff;
      background: linear-gradient(180deg, rgba(27, 140, 208, 0.86), rgba(10, 90, 145, 0.86));
      box-shadow: 0 0 18px rgba(73, 214, 255, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.14);
      font-size: 13px;
      font-weight: 900;
      text-decoration: none;
      white-space: nowrap;
    }

    .source-download:hover {
      filter: brightness(1.12);
    }

    .time-card {
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 8px 12px;
      border: 1px solid var(--line);
      border-radius: 14px;
      background: rgba(4, 28, 52, 0.72);
      box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
      color: var(--muted);
      font-size: 13px;
    }

    .time-card strong {
      color: var(--text);
      font-family: var(--num);
      letter-spacing: 0.04em;
    }

    .toggle-row {
      display: flex;
      gap: 10px;
      justify-content: flex-end;
      align-items: center;
    }

    .dimension-toggle,
    .system-toggle,
    .view-switch {
      display: inline-flex;
      padding: 4px;
      border: 1px solid rgba(80, 165, 235, 0.28);
      border-radius: 14px;
      background: rgba(3, 20, 39, 0.74);
      box-shadow: inset 0 1px 12px rgba(0, 0, 0, 0.18);
    }

    .dimension-toggle button,
    .system-toggle button,
    .view-switch button {
      border: 0;
      border-radius: 10px;
      padding: 8px 14px;
      color: #a9cbe0;
      background: transparent;
      cursor: pointer;
      font-size: 14px;
      font-weight: 700;
      transition: 0.18s ease;
    }

    .dimension-toggle button.active,
    .system-toggle button.active,
    .view-switch button.active {
      color: white;
      background: linear-gradient(180deg, #1b8cd0, #0a5a91);
      box-shadow: 0 0 18px rgba(73, 214, 255, 0.22), inset 0 1px 0 rgba(255, 255, 255, 0.18);
    }

    .dimension-toggle button:hover,
    .system-toggle button:hover,
    .view-switch button:hover {
      color: white;
    }

    .crumb-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      margin: 8px 0 10px;
    }

    .breadcrumbs {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      align-items: center;
      color: var(--muted);
      font-size: 13px;
    }

    .crumb {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 11px;
      border: 1px solid rgba(87, 184, 255, 0.2);
      border-radius: 999px;
      background: rgba(6, 35, 62, 0.64);
    }

    .crumb.clickable {
      cursor: pointer;
      color: #bfeaff;
    }

    .crumb.clickable:hover {
      border-color: var(--line-strong);
      color: white;
    }

    .quick-actions {
      display: flex;
      gap: 10px;
      align-items: center;
    }

    .ghost-btn {
      border: 1px solid rgba(83, 191, 255, 0.34);
      color: #c7e9ff;
      background: rgba(8, 43, 76, 0.62);
      border-radius: 12px;
      padding: 9px 13px;
      cursor: pointer;
      font-weight: 700;
    }

    .ghost-btn:hover {
      background: rgba(18, 93, 142, 0.72);
    }