:root {
        --murasaki: #3c1361;
        --gold: #c5a059;
        --soft-white: rgba(255, 255, 255, 0.92);
        --glass-bg: rgba(20, 20, 30, 0.75);
      }

      body,
      html {
        margin: 0;
        padding: 0;
        width: 100%;
        height: 100%;
        overflow: hidden;
        background: #1a1a1a;
        font-family: "Noto Serif SC", serif;
        user-select: none;
      }

      /* --- 动态粒子层 --- */
      #particles {
        position: absolute;
        inset: 0;
        pointer-events: none;
        z-index: 1;
      }

      /* --- UI Layers --- */
      #app {
        position: relative;
        width: 100vw;
        height: 100vh;
        background: #000;
      }
      #bg {
        position: absolute;
        inset: 0;
        background-size: cover;
        background-position: center;
        transition: 1.5s cubic-bezier(0.4, 0, 0.2, 1);
        filter: brightness(0.85);
      }
      .vignette {
        position: absolute;
        inset: 0;
        background: radial-gradient(
          circle,
          transparent 20%,
          rgba(0, 0, 0, 0.6) 100%
        );
        pointer-events: none;
        z-index: 2;
      }

      /* --- 主菜单 (极简和风) --- */
      #menu-home {
        position: absolute;
        inset: 0;
        z-index: 1000;
        display: flex;
        background: linear-gradient(
          135deg,
          rgba(0, 0, 0, 0.9) 0%,
          transparent 60%
        );
        transition: opacity 1s;
      }
      .nav-sidebar {
        width: 450px;
        padding: 120px 80px;
        position: relative;
      }
      .logo-v {
        writing-mode: vertical-rl;
        color: #fff;
        font-family: "ZCOOL XiaoWei", serif;
        font-size: 6rem;
        letter-spacing: 20px;
        text-shadow: 0 0 30px rgba(197, 160, 89, 0.4);
        margin-bottom: 50px;
      }
      .nav-item {
        color: #bbb;
        font-size: 1.4rem;
        margin-top: 35px;
        cursor: pointer;
        transition: all 0.4s;
        display: flex;
        align-items: center;
        gap: 20px;
        letter-spacing: 2px;
      }
      .nav-item:hover {
        color: var(--gold);
        transform: translateX(15px);
        text-shadow: 0 0 10px rgba(197, 160, 89, 0.5);
      }
      .nav-item::after {
        content: "";
        height: 1px;
        width: 0;
        background: var(--gold);
        transition: 0.4s;
        box-shadow: 0 0 5px var(--gold);
      }
      .nav-item:hover::after {
        width: 100px;
      }

      /* --- 游戏界面 --- */
      #view-game {
        position: absolute;
        inset: 0;
        z-index: 500;
        display: none;
      }
      .char-sprite {
        position: absolute;
        bottom: -5%;
        left: 50%;
        transform: translateX(-50%);
        height: 98%;
        transition: 1s cubic-bezier(0.16, 1, 0.3, 1);
        opacity: 0;
        filter: drop-shadow(0 0 30px rgba(0, 0, 0, 0.4));
      }

      /* --- 对话系统 (毛玻璃质感) --- */
      .dialog-wrap {
        position: absolute;
        bottom: 35px;
        left: 50%;
        transform: translateX(-50%);
        width: 92%;
        max-width: 1300px;
        z-index: 600;
      }
      .name-tag {
        position: absolute;
        top: -15px;
        left: 60px;
        background: var(--glass-bg);
        backdrop-filter: blur(10px);
        color: var(--gold);
        padding: 6px 45px;
        border: 1px solid rgba(197, 160, 89, 0.5);
        font-family: "ZCOOL XiaoWei", serif;
        font-size: 1.4rem;
        clip-path: polygon(10% 0, 100% 0, 90% 100%, 0 100%);
        z-index: 200;
      }
      .msg-box {
        background: rgba(255, 255, 255, 0.88);
        backdrop-filter: blur(15px);
        border-top: 2px solid var(--gold);
        border-bottom: 1px solid rgba(197, 160, 89, 0.3);
        padding: 55px 85px;
        min-height: 180px;
        box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
        border-radius: 4px;
      }
      .msg-text {
        font-size: 1.55rem;
        color: #222;
        line-height: 2;
        font-weight: 500;
      }

      /* --- 控制器 --- */
      .controls {
        position: absolute;
        bottom: 12px;
        right: 40px;
        display: flex;
        gap: 25px;
        font-size: 0.75rem;
        color: #888;
        letter-spacing: 1.5px;
      }
      .btn-ctrl {
        cursor: pointer;
        transition: 0.3s;
        padding: 2px 8px;
      }
      .btn-ctrl:hover {
        color: var(--gold);
        background: rgba(197, 160, 89, 0.1);
      }
      #btn-skip {
        color: #d63031;
        font-weight: bold;
      }

      /* --- 整蛊黑屏 (更压抑的现代感) --- */
      #troll-screen {
        position: absolute;
        inset: 0;
        z-index: 9999;
        background: #050505;
        color: #fff;
        display: none;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        opacity: 0;
        transition: opacity 2s ease;
      }
      .glitch-title {
        font-family: "ZCOOL XiaoWei", serif;
        font-size: 4rem;
        color: #fff;
        text-transform: uppercase;
        letter-spacing: 15px;
        margin-bottom: 40px;
      }
      .troll-line {
        color: #666;
        font-size: 1.1rem;
        margin-bottom: 1.5rem;
        letter-spacing: 3px;
      }
      .retry-btn {
        margin-top: 40px;
        padding: 12px 60px;
        border: 1px solid var(--gold);
        color: var(--gold);
        cursor: pointer;
        transition: 0.5s;
        font-size: 1rem;
        letter-spacing: 5px;
      }
      .retry-btn:hover {
        background: var(--gold);
        color: #000;
        box-shadow: 0 0 20px var(--gold);
      }

      @keyframes fadeInMove {
        from {
          opacity: 0;
          transform: translateY(20px);
        }
        to {
          opacity: 1;
          transform: translateY(0);
        }
      }
      .animate-up {
        animation: fadeInMove 1.2s forwards;
      }

      /* --- 选项 (极简卡片) --- */
      #choices {
        position: absolute;
        inset: 0;
        z-index: 900;
        background: rgba(0, 0, 0, 0.6);
        backdrop-filter: blur(8px);
        display: none;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 25px;
      }
      .opt-card {
        background: rgba(255, 255, 255, 0.95);
        width: 550px;
        padding: 22px;
        text-align: center;
        border-left: 5px solid var(--gold);
        cursor: pointer;
        transition: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        font-size: 1.3rem;
        color: #333;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
      }
      .opt-card:hover {
        transform: scale(1.05);
        background: var(--murasaki);
        color: #fff;
        border-left-width: 15px;
      }