/* Yayoi Kusama 波点艺术主题 */
    body.theme-kusama {
        background: #fff0f5;
        color: #d81b60;
        font-family: 'Georgia', serif;
        overflow-x: hidden;
    }

    body.theme-kusama::before {
        background-image:
            radial-gradient(circle at 20% 80%, rgba(216, 27, 96, 0.08) 0%, transparent 50%),
            radial-gradient(circle at 80% 20%, rgba(233, 30, 99, 0.08) 0%, transparent 50%),
            radial-gradient(circle at 40% 40%, rgba(240, 98, 146, 0.08) 0%, transparent 50%),
            radial-gradient(circle at 60% 70%, rgba(216, 27, 96, 0.06) 0%, transparent 40%),
            radial-gradient(circle at 30% 30%, rgba(233, 30, 99, 0.06) 0%, transparent 40%);
        animation: kusamaFloat 25s ease-in-out infinite;
    }

    @keyframes kusamaFloat {
        0%, 100% { transform: translate(0, 0) rotate(0deg); }
        25% { transform: translate(-15px, -15px) rotate(90deg); }
        50% { transform: translate(15px, -10px) rotate(180deg); }
        75% { transform: translate(-10px, 15px) rotate(270deg); }
    }

    body.theme-kusama .mdui-card {
        background: white;
        border: 3px dotted #d81b60;
        border-radius: 20px;
        padding: 2.5em;
        margin: 2em auto;
        max-width: 95%;
        opacity: 0.95;
        box-shadow: 0 0 30px rgba(216, 27, 96, 0.2);
        position: relative;
        overflow: visible;
    }

    body.theme-kusama .mdui-card::before,
    body.theme-kusama .mdui-card::after {
        content: '';
        position: absolute;
        width: 20px;
        height: 20px;
        background: radial-gradient(circle, #d81b60 0%, #ff69b4 50%, transparent 70%);
        border-radius: 50%;
        animation: kusamaPulse 3s ease-in-out infinite;
    }

    body.theme-kusama .mdui-card::before {
        top: -10px;
        left: 20px;
        animation-delay: 0s;
    }

    body.theme-kusama .mdui-card::after {
        bottom: -10px;
        right: 20px;
        animation-delay: 1.5s;
    }

    @keyframes kusamaPulse {
        0%, 100% { transform: scale(1); opacity: 0.8; }
        50% { transform: scale(1.2); opacity: 1; }
    }

    body.theme-kusama .mdui-btn {
        background: linear-gradient(45deg, #d81b60, #ff69b4);
        color: white;
        border-radius: 25px;
        border: 2px solid transparent;
        font-weight: 600;
        position: relative;
        overflow: hidden;
        transition: all 0.3s ease;
        text-shadow: 0 1px 2px rgba(0,0,0,0.2);
    }

    body.theme-kusama .mdui-btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 5px 15px rgba(216, 27, 96, 0.4);
        background: linear-gradient(45deg, #ff69b4, #d81b60);
    }

    body.theme-kusama .mdui-btn::before {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        width: 0;
        height: 0;
        border-radius: 50%;
        background: radial-gradient(circle, rgba(255,255,255,0.3) 0%, transparent 70%);
        transform: translate(-50%, -50%);
        transition: width 0.4s, height 0.4s;
    }

    body.theme-kusama .mdui-btn:hover::before {
        width: 200px;
        height: 200px;
    }

    body.theme-kusama .mdui-textfield-input {
        border: 2px dotted #d81b60;
        border-radius: 20px;
        background: rgba(255, 240, 245, 0.9);
        color: #d81b60;
        font-weight: 500;
        transition: all 0.3s ease;
        box-shadow: inset 0 2px 4px rgba(216, 27, 96, 0.1);
    }

    body.theme-kusama .mdui-textfield-input:focus {
        border-color: #ff69b4;
        background: rgba(255, 255, 255, 0.95);
        box-shadow: 0 0 0 3px rgba(255, 105, 180, 0.2), inset 0 2px 4px rgba(216, 27, 96, 0.1);
    }

    body.theme-kusama .mdui-textfield-input::placeholder {
        color: rgba(216, 27, 96, 0.6);
    }

    /* 波点主题的容器和布局调整 */
    body.theme-kusama .mdui-container {
        max-width: 1000px;
        margin-top: 5em;
        margin-bottom: 3em;
    }

    body.theme-kusama h1 {
        color: #d81b60;
        font-weight: 600;
        text-shadow: 2px 2px 4px rgba(216, 27, 96, 0.1);
        margin-bottom: 1.5em;
    }

    body.theme-kusama .mdui-img-circle {
        border: 3px solid #d81b60;
        box-shadow: 0 0 20px rgba(216, 27, 96, 0.3);
    }

    body.theme-kusama p {
        line-height: 1.8;
        opacity: 0.9;
    }

    /* 为波点艺术主题添加图片悬浮动画 */
    body.theme-kusama .down img:hover {
        transform: scale(1.08) rotate(5deg);
        box-shadow: 0 8px 20px rgba(216, 27, 96, 0.3);
        filter: brightness(1.1);
        transition: all 0.3s ease;
    }

    /* 波点艺术主题图片悬浮时的额外装饰 */
    body.theme-kusama .down div[style*="display: inline-block"]:hover img::after {
        content: '◈';
        position: absolute;
        top: 10px;
        right: 10px;
        color: #d81b60;
        font-size: 24px;
        text-shadow: 0 2px 4px rgba(216, 27, 96, 0.3);
        animation: kusamaPulse 2s ease-in-out infinite;
    }

    body.theme-kusama strong {
        color: #d81b60;
        font-weight: 700;
    }

    body.theme-kusama .down {
        margin-top: 2em;
        padding-top: 1.5em;
        border-top: 2px dotted #d81b60;
    }

    body.theme-kusama .down .mdui-btn {
        margin: 0.5em;
        min-width: 120px;
    }