/* 引入科幻感字体 */
      @import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700&family=Rajdhani:wght@300;500;700&family=VT323&display=swap');

      :root {
        --bg-color: #020408;
        --text-color: #62e1ff;
        --accent-color: #62e1ff;
        --accent-glow: rgba(98, 225, 255, 0.4);
        --danger-color: #ff4b2b;
        --panel-bg: rgba(10, 20, 30, 0.85);
        --pixel-size: 1px;
      }

      * { box-sizing: border-box; }

      body, html {
        margin: 0; padding: 0;
        width: 100%; height: 100%;
        overflow: hidden;
        background-color: var(--bg-color);
        /* 背景设计：网格 + Logo */
        background-image: 
            linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.2) 50%),
            linear-gradient(90deg, rgba(98, 225, 255, 0.03) 1px, transparent 1px),
            linear-gradient(rgba(98, 225, 255, 0.03) 1px, transparent 1px),
            url("assets/logo.gif");
        background-position: center;
        background-repeat: no-repeat;
        background-size: auto 85vh;

        font-family: 'Rajdhani', sans-serif;
        color: var(--text-color);
        user-select: none;
      }

      /* CRT 扫描线与暗角 */
      .crt-overlay {
        position: fixed; inset: 0;
        background: radial-gradient(circle, transparent 60%, rgba(0,0,0,0.4) 100%);
        pointer-events: none;
        z-index: 20;
      }

      .main-interface {
        position: relative;
        z-index: 5;
        width: 100%;
        height: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: flex-end;
        padding-bottom: 12vh;
      }

      /* 菜单容器：玻璃拟态 */
      .action-dock {
        display: flex;
        flex-direction: row;
        gap: 10px;
        background: var(--panel-bg);
        padding: 12px 20px;
        backdrop-filter: blur(12px);
        border: 1px solid rgba(98, 225, 255, 0.3);
        box-shadow: 0 0 30px rgba(0, 0, 0, 0.5), inset 0 0 15px rgba(98, 225, 255, 0.05);
        border-radius: 4px;
        animation: slideUpFade 1s cubic-bezier(0.16, 1, 0.3, 1);
      }

      @keyframes slideUpFade {
        from { opacity: 0; transform: translateY(40px) scale(0.95); }
        to { opacity: 1; transform: translateY(0) scale(1); }
      }

      button {
        background: transparent;
        border: 1px solid transparent;
        color: var(--accent-color);
        font-family: 'Orbitron', sans-serif;
        font-size: 18px;
        font-weight: 700;
        letter-spacing: 3px;
        padding: 12px 30px;
        cursor: pointer;
        position: relative;
        transition: all 0.3s ease;
        display: flex;
        align-items: center;
        justify-content: center;
        overflow: hidden;
        border-radius: 2px;
      }

      /* 按钮悬停状态 */
      button:hover:not(:disabled) {
        background: rgba(98, 225, 255, 0.15);
        border-color: var(--accent-color);
        box-shadow: 0 0 20px var(--accent-glow);
        transform: translateY(-2px);
      }

      /* 装饰性括号 */
      button::before, button::after {
        content: '';
        position: absolute;
        width: 6px; height: 100%;
        border: 1px solid var(--accent-color);
        opacity: 0;
        transition: 0.3s;
      }
      button::before { left: 0; border-right: 0; transform: translateX(-10px); }
      button::after { right: 0; border-left: 0; transform: translateX(10px); }

      button:hover:not(:disabled)::before, button:hover:not(:disabled)::after {
        opacity: 1; transform: translateX(0);
      }

      /* 流光效果层 */
      button .glitch-layer {
        position: absolute;
        top: 0; left: -150%;
        width: 100%; height: 100%;
        background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
        transform: skewX(-20deg);
        transition: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
      }
      button:hover .glitch-layer { left: 150%; }

      button:disabled {
        opacity: 0.3;
        cursor: not-allowed;
        filter: grayscale(1);
      }

      .btn-exit:hover:not(:disabled) {
        color: var(--danger-color);
        border-color: var(--danger-color);
        box-shadow: 0 0 20px rgba(255, 75, 43, 0.3);
      }

      /* 状态栏设计 */
      .status-bar {
        position: fixed;
        bottom: 15px;
        left: 20px; right: 20px;
        display: flex;
        justify-content: space-between;
        font-family: 'VT323', monospace;
        font-size: 16px;
        color: var(--accent-color);
        opacity: 0.7;
        pointer-events: none;
      }

      .status-left::before {
        content: "";
        display: inline-block;
        width: 8px; height: 8px;
        background: var(--accent-color);
        margin-right: 10px;
        border-radius: 50%;
        box-shadow: 0 0 8px var(--accent-color);
        animation: pulse 1.5s infinite;
      }

      @keyframes pulse {
        0%, 100% { opacity: 1; }
        50% { opacity: 0.3; }
      }

      @media (max-width: 768px) {
        body, html { background-size: auto 47vh; background-position: center, center, center, center 15%; }
        .action-dock { flex-direction: column; width: 280px; gap: 5px; }
        button { width: 100%; }
        .status-bar { flex-direction: column; align-items: center; gap: 5px; text-align: center; }
      }


      /* 设置面板：科技风格 */
      .settings-screen {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(2, 4, 8, 0.9);
        z-index: 100;
        align-items: center;
        justify-content: center;
        backdrop-filter: blur(8px);
      }
      .settings-panel {
        width: 400px;
        max-width: 90vw;
        background: #0a0e14;
        border: 1px solid var(--accent-color);
        padding: 40px;
        position: relative;
        box-shadow: 0 0 50px rgba(0, 0, 0, 0.8), 0 0 20px var(--accent-glow);
      }
      .settings-panel::before {
        content: "SYSTEM_CONFIG_V4.0";
        position: absolute;
        top: -12px; left: 20px;
        background: #0a0e14;
        padding: 0 10px;
        font-family: 'Orbitron', sans-serif;
        font-size: 12px;
        color: var(--accent-color);
      }

      .setting-item {
        display: flex;
        flex-direction: column;
        margin-bottom: 25px;
      }
      .setting-label {
        display: flex;
        justify-content: space-between;
        margin-bottom: 8px;
        font-size: 14px;
        letter-spacing: 1px;
        text-transform: uppercase;
      }

      .lang-switch {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 6px;
        background: rgba(98, 225, 255, 0.08);
        border: 1px solid rgba(98, 225, 255, 0.25);
        padding: 6px;
      }

      .lang-option {
        font-size: 12px;
        letter-spacing: 2px;
        padding: 8px 6px;
        border: 1px solid rgba(98, 225, 255, 0.2);
        color: rgba(98, 225, 255, 0.7);
        background: transparent;
        cursor: pointer;
      }

      .lang-option.active {
        background: rgba(98, 225, 255, 0.15);
        color: #ffffff;
        border-color: rgba(98, 225, 255, 0.8);
        box-shadow: 0 0 12px rgba(98, 225, 255, 0.25);
      }

      .lang-option:disabled {
        opacity: 0.35;
        cursor: not-allowed;
        filter: grayscale(1);
      }

      .setting-note {
        font-size: 11px;
        color: rgba(98, 225, 255, 0.6);
        margin-top: 6px;
      }

      .settings-link {
        width: 100%;
        margin-top: 6px;
        background: transparent;
        border: 1px dashed rgba(98, 225, 255, 0.5);
        color: rgba(98, 225, 255, 0.6);
        font-family: 'Orbitron', sans-serif;
        letter-spacing: 2px;
        padding: 10px 12px;
        cursor: not-allowed;
      }
      
      input[type="range"] {
        -webkit-appearance: none;
        width: 100%;
        background: rgba(98, 225, 255, 0.1);
        height: 4px;
        outline: none;
      }
      input[type="range"]::-webkit-slider-thumb {
        -webkit-appearance: none;
        width: 15px; height: 15px;
        background: var(--accent-color);
        cursor: pointer;
        box-shadow: 0 0 10px var(--accent-color);
      }

      .account-screen {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(2, 4, 8, 0.9);
        z-index: 120;
        align-items: center;
        justify-content: center;
        backdrop-filter: blur(8px);
      }

      .account-panel {
        width: 460px;
        max-width: 92vw;
        background: #0a0e14;
        border: 1px solid var(--accent-color);
        padding: 32px;
        box-shadow: 0 0 50px rgba(0, 0, 0, 0.8), 0 0 20px var(--accent-glow);
        display: flex;
        flex-direction: column;
        gap: 16px;
      }

      .account-title {
        font-family: 'Orbitron', sans-serif;
        font-size: 16px;
        letter-spacing: 2px;
        color: var(--accent-color);
      }

      .account-row {
        display: grid;
        grid-template-columns: 90px 1fr auto;
        gap: 10px;
        align-items: center;
      }

      .account-toggle {
        display: flex;
        gap: 8px;
      }

      .account-label {
        font-size: 12px;
        letter-spacing: 1px;
        text-transform: uppercase;
        color: #a6dfff;
      }

      .account-row input {
        background: rgba(98, 225, 255, 0.08);
        border: 1px solid rgba(98, 225, 255, 0.3);
        color: var(--text-color);
        padding: 8px 10px;
        font-family: 'Rajdhani', sans-serif;
      }

      .account-row input[readonly] {
        opacity: 0.8;
        cursor: default;
      }

      .account-section {
        display: grid;
        gap: 8px;
        border-top: 1px solid rgba(98, 225, 255, 0.2);
        padding-top: 12px;
      }

      .account-section-title {
        font-size: 12px;
        letter-spacing: 1px;
        text-transform: uppercase;
        color: #8fb9d4;
      }

      .account-status {
        font-size: 13px;
        color: #cfe9ff;
      }

      .account-icons {
        display: flex;
        gap: 10px;
        align-items: center;
        flex-wrap: wrap;
      }

      .account-icon {
        font-size: 11px;
        padding: 4px 6px;
        border: 1px solid rgba(98, 225, 255, 0.2);
        color: #8fa3b5;
        background: rgba(255, 255, 255, 0.04);
      }

      .account-icon.bound {
        color: #ffffff;
        border-color: rgba(98, 225, 255, 0.6);
        background: rgba(98, 225, 255, 0.12);
      }

      .account-btn,
      .account-close {
        align-self: flex-end;
        background: transparent;
        border: 1px solid var(--accent-color);
        color: var(--accent-color);
        font-family: 'Orbitron', sans-serif;
        font-size: 12px;
        letter-spacing: 2px;
        padding: 8px 14px;
        cursor: pointer;
      }

      .account-toggle .account-btn {
        color: rgba(98, 225, 255, 0.45);
        border-color: rgba(98, 225, 255, 0.25);
        background: transparent;
      }

      .account-btn.active {
        background: rgba(98, 225, 255, 0.15);
        color: #ffffff;
        border-color: rgba(98, 225, 255, 0.9);
        box-shadow: 0 0 12px rgba(98, 225, 255, 0.35);
      }

      .account-close {
        align-self: center;
        width: 100%;
      }

      .account-divider {
        width: 100%;
        height: 1px;
        background: rgba(98, 225, 255, 0.2);
      }

      .account-danger {
        border-color: rgba(255, 75, 43, 0.9);
        color: #ff6a54;
        box-shadow: 0 0 12px rgba(255, 75, 43, 0.25);
      }

      .account-danger:hover:not(:disabled) {
        background: rgba(255, 75, 43, 0.15);
        color: #ffffff;
        border-color: #ff4b2b;
      }