/* ====== 开屏 ====== */
    .splash-screen {
      position: fixed; inset: 0;
      background: var(--splash-bg-start, #020208);
      z-index: 99999;
      display: flex; flex-direction: column; justify-content: center; align-items: center;
      transition: opacity 1.2s ease, visibility 1.2s, filter 1.2s, transform 1.2s ease;
      transform: scale(1); overflow: hidden;
    }
    .splash-screen::before {
      content: ''; position: absolute; top: 50%; left: 50%;
      width: 600px; height: 600px; border-radius: 50%;
      background: radial-gradient(circle, rgba(var(--splash-accent-rgb,162,155,254),0.08) 0%, rgba(var(--splash-accent-rgb,162,155,254),0.03) 35%, transparent 65%);
      transform: translate(-50%,-50%); animation: splashGlow 5s ease-in-out infinite; pointer-events: none;
    }
    .splash-screen::after {
      content: ''; position: absolute; inset: 0;
      background: radial-gradient(circle at 30% 25%, rgba(var(--splash-accent-rgb,162,155,254),0.05) 0%, transparent 40%),
                  radial-gradient(circle at 75% 75%, rgba(var(--splash-accent-rgb,162,155,254),0.04) 0%, transparent 40%);
      pointer-events: none;
    }
    .splash-screen.hidden {
      opacity: 0; visibility: hidden; filter: blur(16px) brightness(0.4);
      transform: scale(1.05);
    }

    /* 粒子 */
    .splash-particles { position: absolute; inset: 0; pointer-events: none; z-index: 0; }
    .splash-particle {
      position: absolute; width: 2px; height: 2px;
      background: rgba(var(--splash-accent-rgb,162,155,254),0.5);
      border-radius: 50%;
      box-shadow: 0 0 6px rgba(var(--splash-accent-rgb,162,155,254),0.3);
      animation: particleFloat 8s ease-in-out infinite;
      will-change: transform, opacity;
    }
    .splash-particle:nth-child(1) { top: 20%; left: 15%; animation-delay: 0s; animation-duration: 7s; }
    .splash-particle:nth-child(2) { top: 35%; left: 80%; animation-delay: 1.2s; animation-duration: 9s; width: 3px; height: 3px; }
    .splash-particle:nth-child(3) { top: 70%; left: 25%; animation-delay: 2.4s; animation-duration: 6.5s; }
    .splash-particle:nth-child(4) { top: 15%; left: 65%; animation-delay: 3.6s; animation-duration: 10s; width: 1.5px; height: 1.5px; }
    .splash-particle:nth-child(5) { top: 80%; left: 70%; animation-delay: 0.8s; animation-duration: 8.5s; }
    .splash-particle:nth-child(6) { top: 50%; left: 10%; animation-delay: 2s; animation-duration: 7.5s; width: 2.5px; height: 2.5px; }

    /* Logo 镜面体 */
    .splash-logo { position: relative; width: 80px; height: 80px; margin-bottom: 2.5rem; z-index: 1; perspective: 400px; }
    .splash-logo::before {
      content: ''; position: absolute; inset: -2px;
      border: 1.5px dashed rgba(var(--splash-accent-rgb,162,155,254),0.3);
      border-radius: 50%; animation: logoSpin 8s linear infinite;
      box-shadow: 0 0 15px rgba(var(--splash-accent-rgb,162,155,254),0.1), 0 0 30px rgba(var(--splash-accent-rgb,162,155,254),0.03);
    }
    .splash-logo::after {
      content: ''; position: absolute; inset: 10px;
      border-top: 2px solid rgba(var(--splash-accent-rgb,162,155,254),0.5);
      border-right: 2px solid transparent;
      border-bottom: 2px solid rgba(var(--splash-accent-rgb,162,155,254),0.2);
      border-left: 2px solid transparent;
      border-radius: 50%; animation: logoSpin 5s linear infinite reverse;
      box-shadow: 0 0 10px rgba(var(--splash-accent-rgb,162,155,254),0.08);
    }
    .splash-mirror {
      position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
      width: 36px; height: 36px; border-radius: 8px;
      background: linear-gradient(135deg, rgba(var(--splash-accent-rgb,162,155,254),0.1) 0%, rgba(var(--splash-accent-rgb,162,155,254),0.05) 50%, rgba(var(--splash-accent-rgb,162,155,254),0.08) 100%);
      border: 1px solid rgba(var(--splash-accent-rgb,162,155,254),0.15);
      display: flex; align-items: center; justify-content: center;
      backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
      animation: mirrorPulse 4s ease-in-out infinite;
    }
    .splash-logo-icon {
      font-size: 1.2rem; color: var(--accent-color);
      text-shadow: 0 0 20px rgba(var(--splash-accent-rgb,162,155,254),0.6), 0 0 40px rgba(var(--splash-accent-rgb,162,155,254),0.2);
    }

    /* 标题逐字 */
    .splash-title {
      font-size: 1.8rem; color: rgba(255,255,255,0.9); letter-spacing: 0;
      margin: 0 0 0.5rem; font-weight: 200; position: relative; z-index: 1;
      overflow: hidden;
    }
    .splash-title .char {
      display: inline-block; opacity: 0; transform: translateY(14px) scale(0.95);
      animation: charReveal 0.6s cubic-bezier(0.22, 1, 0.36, 1) forwards;
    }
    .splash-title .char:nth-child(1) { animation-delay: 0.35s; }
    .splash-title .char:nth-child(2) { animation-delay: 0.55s; }
    .splash-title .char:nth-child(3) { animation-delay: 0.75s; }
    .splash-title .char:nth-child(4) { animation-delay: 0.95s; }

    /* 版本号 */
    .splash-version {
      font-size: 0.65rem; color: rgba(var(--splash-accent-rgb,162,155,254),0.35); letter-spacing: 3px;
      margin-bottom: 2.5rem; font-weight: 300; position: relative; z-index: 1;
      opacity: 0; animation: fadeIn 0.8s forwards 1.5s;
    }

    /* 金句打字效果 */
    .splash-subtitle {
      font-size: 0.78rem; color: rgba(var(--splash-accent-rgb,162,155,254),0.5); letter-spacing: 1.5px;
      text-align: center; max-width: 80%; line-height: 2;
      position: relative; z-index: 1; min-height: 1.6em;
      opacity: 0;
    }
    .splash-cursor {
      display: inline-block; width: 1px; height: 0.9em;
      background: rgba(var(--splash-accent-rgb,162,155,254),0.4);
      margin-left: 2px; vertical-align: text-bottom;
      animation: cursorBlink 1s step-end infinite;
    }

    /* 进度条 */
    .splash-progress {
      width: 120px; height: 2px; background: rgba(255,255,255,0.04);
      margin-top: 3rem; position: relative; overflow: hidden;
      border-radius: 1px; z-index: 1; opacity: 1;
    }
    .splash-progress-bar {
      height: 100%; width: 0%; border-radius: 1px;
      background: linear-gradient(90deg, rgba(var(--splash-accent-rgb,162,155,254),0.3), var(--accent-color));
      box-shadow: 0 0 8px rgba(var(--splash-accent-rgb,162,155,254),0.3), 0 0 16px rgba(var(--splash-accent-rgb,162,155,254),0.15);
      transition: width 0.1s linear;
    }
    .splash-progress-bar.done {
      width: 100% !important;
      animation: none;
      box-shadow: 0 0 12px rgba(var(--splash-accent-rgb,162,155,254),0.5), 0 0 24px rgba(var(--splash-accent-rgb,162,155,254),0.2);
    }

    /* ====== 息屏 ====== */
    .shutdown-screen { position: fixed; inset: 0; background: var(--splash-bg-start, #000); z-index: 100000; display: flex; flex-direction: column; justify-content: center; align-items: center; opacity: 0; visibility: hidden; pointer-events: none; transition: opacity 2.5s ease, visibility 2.5s; overflow: hidden; }
    .shutdown-screen.active { opacity: 1; visibility: visible; pointer-events: all; }
    .shutdown-screen::before { content: ''; position: absolute; top: 50%; left: 50%; width: 300px; height: 300px; border-radius: 50%; background: radial-gradient(circle, rgba(var(--splash-accent-rgb,162,155,254),0.05) 0%, transparent 60%); transform: translate(-50%,-50%); transition: opacity 4s ease; pointer-events: none; }
    .shutdown-screen.active::before { opacity: 0; }
    .shutdown-logo { position: relative; width: 48px; height: 48px; margin-bottom: 2.5rem; z-index: 1; }
    .shutdown-logo::before { content: ''; position: absolute; inset: 0; border: 1px solid rgba(var(--splash-accent-rgb,162,155,254),0.15); border-radius: 50%; transition: all 3s ease; }
    .shutdown-logo::after { content: ''; position: absolute; inset: 8px; border: 1px solid rgba(var(--splash-accent-rgb,162,155,254),0.1); border-radius: 50%; transition: all 3s ease 0.3s; }
    .shutdown-screen.active .shutdown-logo::before { transform: scale(2); opacity: 0; }
    .shutdown-screen.active .shutdown-logo::after { transform: scale(2.5); opacity: 0; }
    .shutdown-logo-icon { position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); font-size: 1.2rem; color: rgba(var(--splash-accent-rgb,162,155,254),0.25); text-shadow: 0 0 10px rgba(var(--splash-accent-rgb,162,155,254),0.15); transition: all 3s ease; }
    .shutdown-screen.active .shutdown-logo-icon { opacity: 0; filter: blur(8px); transform: translate(-50%,-50%) scale(0.5); }
    .shutdown-title { font-size: 1.3rem; color: rgba(var(--splash-accent-rgb,162,155,254),0.4); letter-spacing: 8px; font-weight: 200; margin-bottom: 1rem; opacity: 0; transform: translateY(20px); transition: all 1.5s ease 0.8s; }
    .shutdown-screen.active .shutdown-title { opacity: 1; transform: translateY(0); letter-spacing: 6px; }
    .shutdown-subtitle { font-size: 0.78rem; color: rgba(var(--splash-accent-rgb,162,155,254),0.25); letter-spacing: 2px; opacity: 0; transition: all 1.5s ease 1.8s; text-align: center; max-width: 80%; line-height: 2; }
    .shutdown-screen.active .shutdown-subtitle { opacity: 1; }
    .wake-up-btn { margin-top: 3rem; background: transparent; border: 1px solid rgba(var(--splash-accent-rgb,162,155,254),0.12); color: rgba(var(--splash-accent-rgb,162,155,254),0.4); padding: 10px 28px; border-radius: 30px; cursor: pointer; transition: all 0.4s ease; letter-spacing: 4px; font-size: 0.72rem; font-weight: 300; opacity: 0; transform: translateY(10px); }
    .shutdown-screen.active .wake-up-btn { opacity: 1; transform: translateY(0); transition-delay: 3s; }
    .wake-up-btn:hover { border-color: var(--accent-color); color: var(--accent-color); box-shadow: 0 0 12px rgba(var(--splash-accent-rgb,162,155,254),0.1); background: rgba(var(--splash-accent-rgb,162,155,254),0.03); }

    /* ====== 动画 ====== */
    @keyframes progressFill { 0% { width: 0%; } 50% { width: 50%; } 80% { width: 85%; } 100% { width: 92%; } }
    @keyframes splashGlow { 0%, 100% { transform: translate(-50%,-50%) scale(1); opacity: 0.6; } 50% { transform: translate(-50%,-50%) scale(1.15); opacity: 1; } }
    @keyframes logoSpin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
    @keyframes mirrorPulse { 0%, 100% { transform: translate(-50%,-50%) scale(1); opacity: 1; } 50% { transform: translate(-50%,-50%) scale(1.06); opacity: 0.88; } }
    @keyframes charReveal { from { opacity: 0; transform: translateY(14px) scale(0.95); filter: blur(2px); } to { opacity: 1; transform: translateY(0) scale(1); filter: blur(0); } }
    @keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
    @keyframes cursorBlink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }
    @keyframes particleFloat {
      0% { transform: translate(0, 0) scale(1); opacity: 0; }
      10% { opacity: 0.6; }
      25% { transform: translate(12px, -18px) scale(1.2); opacity: 0.8; }
      50% { transform: translate(-8px, -30px) scale(0.7); opacity: 0.3; }
      75% { transform: translate(16px, -12px) scale(1.1); opacity: 0.5; }
      100% { transform: translate(0, 0) scale(1); opacity: 0; }
    }