/* ---- 首页专属 ---- */
    .hero {
      position: relative; padding: 84px 0 30px; overflow: visible;
      display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
      gap: 56px; align-items: center;
    }
    .hero-art {
      position: absolute; inset: -40px -10% auto; z-index: -1; width: 120%; opacity: .3;
      pointer-events: none; user-select: none;
      mask-image: radial-gradient(80% 90% at 50% 30%, #000 30%, transparent 75%);
      -webkit-mask-image: radial-gradient(80% 90% at 50% 30%, #000 30%, transparent 75%);
    }
    [data-theme="light"] .hero-art { opacity: .14; filter: invert(0.92) hue-rotate(180deg); }
    .hero h1 { margin: 22px 0 0; font-size: 48px; }
    .hero .lead { margin: 22px 0 0; max-width: 470px; }
    .hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 34px; }
    .hero-meta {
      display: flex; gap: 12px; flex-wrap: wrap; margin-top: 36px;
    }
    .hero-meta span {
      padding: 8px 16px; border: 1px solid var(--hairline-strong); border-radius: 999px;
      color: var(--paper-soft); font-size: 13.5px;
    }
    .hero-meta b { color: var(--accent); }

    /* ---- hero 右键启动演示动画（Win10 风格）---- */
    .hero-demo { position: relative; user-select: none; }
    .hd-window {
      position: relative; height: 430px; overflow: hidden;
      border: 1px solid #b8bec8; border-radius: 4px;
      background: #ffffff; color: #1a1a1a;
      font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
      box-shadow: 0 24px 60px rgba(20, 30, 50, 0.35);
    }
    .hd-bar { display: flex; align-items: center; gap: 8px; padding: 0 0 0 10px; height: 32px; background: #fff; font-size: 12.5px; color: #1a1a1a; }
    .hd-bar svg.fico { width: 17px; height: 14px; }
    .hd-bar .ctrls { margin-left: auto; display: flex; height: 100%; }
    .hd-bar .ctrls span { width: 42px; display: grid; place-items: center; font-size: 11px; color: #444; }
    .hd-ribbon { display: flex; gap: 2px; padding: 0 8px; background: #fff; border-bottom: 1px solid #e3e6ea; font-size: 12.5px; }
    .hd-ribbon span { padding: 3px 12px 4px; color: #333; }
    .hd-ribbon span.file { background: #0078d7; color: #fff; }
    .hd-addr { display: flex; align-items: center; gap: 8px; padding: 5px 10px; border-bottom: 1px solid #e3e6ea; background: #fff; }
    .hd-addr .nav { color: #777; font-size: 13px; letter-spacing: 5px; }
    .hd-addr .crumb { flex: 1; display: flex; align-items: center; gap: 6px; height: 25px; padding: 0 10px; border: 1px solid #d9dde2; font-size: 12px; color: #333; }
    .hd-addr .crumb i { color: #999; font-style: normal; }
    .hd-addr .srch { width: 96px; height: 25px; border: 1px solid #d9dde2; font-size: 11.5px; color: #999; display: flex; align-items: center; padding: 0 8px; white-space: nowrap; overflow: hidden; }
    .hd-body { display: flex; height: calc(100% - 92px); }
    .hd-side { width: 116px; flex: 0 0 auto; padding: 8px 0 0 12px; border-right: 1px solid #eceef1; font-size: 12px; color: #333; line-height: 2.05; }
    .hd-side .ind { padding-left: 14px; color: #444; }
    .hd-files { flex: 1; display: flex; gap: 6px; padding: 12px 10px; flex-wrap: wrap; align-content: flex-start; }
    .hd-file { width: 76px; text-align: center; font-size: 11.5px; color: #1a1a1a; line-height: 1.35; padding: 6px 2px 4px; border: 1px solid transparent; }
    .hd-file svg { width: 42px; height: 42px; display: block; margin: 0 auto 3px; }
    .hd-new { opacity: 0; transform: scale(.5); transition: opacity .4s ease, transform .45s cubic-bezier(.2,1.6,.4,1); }
    .hd-new.show { opacity: 1; transform: scale(1); background: #cce8ff; border-color: #99d1ff; }

    .hd-menu {
      position: absolute; left: 48%; top: 38%; width: 212px; z-index: 3;
      background: #f2f2f2; border: 1px solid #b0b0b0;
      box-shadow: 3px 3px 8px rgba(0,0,0,.25); padding: 3px 0;
      opacity: 0; transform: scale(.97); transform-origin: top left;
      transition: opacity .12s ease, transform .12s ease; pointer-events: none;
      font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
    }
    .hd-menu.show { opacity: 1; transform: scale(1); }
    .hd-menu > div { display: flex; align-items: center; gap: 8px; padding: 4px 12px 4px 30px; font-size: 12.5px; color: #1a1a1a; }
    .hd-menu > div .arr { margin-left: auto; color: #555; font-size: 10px; }
    .hd-menu > .sep { padding: 0; margin: 3px 8px; border-top: 1px solid #d9d9d9; }
    .hd-menu > div.hot { padding-left: 8px; }
    .hd-menu > div.hot svg { width: 17px; height: 17px; flex: 0 0 auto; }
    .hd-menu > div.hot.hover { background: #cce8ff; }

    .hd-term {
      position: absolute; left: 5%; right: 5%; bottom: 5%; top: 34%; z-index: 4;
      border-radius: 12px; background: rgba(10,11,14,.97); border: 1px solid rgba(236,233,225,0.2);
      box-shadow: 0 24px 70px rgba(0,0,0,.65); overflow: hidden;
      opacity: 0; transform: translateY(24px);
      transition: opacity .3s ease, transform .3s ease; pointer-events: none;
    }
    .hd-term.show { opacity: 1; transform: translateY(0); }
    .hd-term { background: #161616; }
    .hd-term-bar {
      display: flex; align-items: center; gap: 8px; padding: 0 4px; height: 30px; background: #1f1f1f;
      font-family: var(--font-mono); font-size: 11.5px; color: #d6d6d6;
    }
    .hd-term-bar .tab { display: flex; align-items: center; gap: 6px; height: 24px; padding: 0 12px; background: #2d2d2d; border-radius: 5px 5px 0 0; margin-top: 6px; }
    .hd-term-bar .tab img { width: 13px; height: 13px; border-radius: 3px; }
    .hd-term-bar .wc { margin-left: auto; color: #c9c9c9; letter-spacing: 6px; padding-right: 8px; }
    .hd-term-body { padding: 13px 16px; font-family: var(--font-mono); font-size: 12.5px; line-height: 1.62; color: #d6d6d6; white-space: pre; }
    .hd-term-body .dim { color: #8a8f98; }
    .hd-term-body .grn { color: #6fe3c4; }
    .hd-term-body .ok { color: #9fe0a0; }
    .hd-term-body .w { color: #fff; }
    .hd-line { opacity: 0; transition: opacity .3s ease; }
    .hd-line.show { opacity: 1; }
    .hd-cursor { position: absolute; z-index: 6; left: 84%; top: 78%; transition: left .9s cubic-bezier(.4,.1,.2,1), top .9s cubic-bezier(.4,.1,.2,1); filter: drop-shadow(0 2px 6px rgba(0,0,0,.7)); }
    .hd-click {
      position: absolute; z-index: 5; width: 20px; height: 20px; border-radius: 50%;
      border: 3px solid #0797b4; opacity: 0; pointer-events: none;
    }
    .hd-click.go { animation: hdping .5s ease-out; }
    @keyframes hdping { 0% { opacity: .9; transform: scale(.5); } 100% { opacity: 0; transform: scale(3.2); } }
    .hd-rlabel {
      position: absolute; z-index: 6; padding: 3px 10px; border-radius: 7px;
      background: #0797b4; color: #fff; font-size: 13px; font-weight: 800;
      opacity: 0; transition: opacity .2s ease;
    }
    .hd-rlabel.show { opacity: 1; }
    .hd-hint {
      margin-top: 16px; text-align: center; font-size: 15px; color: var(--paper-soft);
      transition: opacity .25s ease;
    }
    .hd-hint b { color: var(--accent); }