body {
    font-family: 'Comic Sans MS', sans-serif;
    /* 动态背景颜色渐变，优化过渡效果 */
    background: linear-gradient(135deg, #e6f7ff, #c0eaff);
    animation: bodyBackgroundAnimation 30s ease-in-out infinite alternate;
    color: #2c3e50;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    overflow: hidden;
}

@keyframes bodyBackgroundAnimation {
    0% {
        background: linear-gradient(135deg, #e6f7ff, #c0eaff);
    }

    10% {
        background: linear-gradient(135deg, #e5f6fe, #bfe8fe);
    }

    20% {
        background: linear-gradient(135deg, #e4f5fd, #bee7fd);
    }

    30% {
        background: linear-gradient(135deg, #e3f4fc, #bde6fc);
    }

    40% {
        background: linear-gradient(135deg, #e2f3fb, #bce5fb);
    }

    50% {
        background: linear-gradient(135deg, #e1f2fa, #bbe4fa);
    }

    60% {
        background: linear-gradient(135deg, #e2f3fb, #bce5fb);
    }

    70% {
        background: linear-gradient(135deg, #e3f4fc, #bde6fc);
    }

    80% {
        background: linear-gradient(135deg, #e4f5fd, #bee7fd);
    }

    90% {
        background: linear-gradient(135deg, #e5f6fe, #bfe8fe);
    }

    100% {
        background: linear-gradient(135deg, #e6f7ff, #c0eaff);
    }
}

.container {
    max-width: 80%;
    margin: 100px auto 0;
    background-color: #f7f9fb;
    /* 浅灰白背景 */
    color: #34495e;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    text-align: center;
    animation: fadeIn 1s ease-in-out;
}

@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

h1 {
    color: #2980b9;
    /* 深蓝色标题 */
    margin-bottom: 20px;
    font-size: 36px;
    animation: colorChange 3s infinite alternate;
}

@keyframes colorChange {
    0% {
        color: #2980b9;
    }

    100% {
        color: #3498db;
    }
}

#game-area {
    margin-top: 20px;
}

#morse-code-display {
    font-size: 28px;
    color: #3498db;
    /* 亮蓝色摩斯密码 */
    margin-bottom: 15px;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

input[type="text"] {
    padding: 12px;
    border: 3px solid #2980b9;
    /* 亮蓝色边框 */
    border-radius: 6px;
    margin-bottom: 15px;
    width: 200px;
    font-size: 16px;
    box-shadow: 0 0 10px rgba(52, 152, 219, 0.3);
    transition: all 0.3s ease;
}

input[type="text"]:focus {
    border-color: #2ecc71;
    box-shadow: 0 0 15px rgba(46, 204, 113, 0.4);
    transform: scale(1.02);
}

button {
    padding: 12px 24px;
    background: linear-gradient(45deg, #27ae60, #2980b9);
    /* 绿色按钮 */
    color: #fff;
    border: 3px solid white;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    font-size: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    text-transform: uppercase;
    font-weight: bold;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(120deg,
            transparent,
            rgba(255, 255, 255, 0.4),
            transparent);
    transition: 0.5s;
}

button:hover::before {
    left: 100%;
}

button:hover {
    background-color: #27ae60;
    /* 深绿色按钮 */
    transform: scale(1.1);
}

#result {
    margin-top: 15px;
    font-weight: bold;
    font-size: 18px;
    animation: fadeIn 1s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

#start-screen {
    text-align: center;
    background-color: #f0f9ff;
    /* 浅蓝色背景 */
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    animation: fadeIn 1s ease-in-out;
}

#start-screen h1 {
    font-size: 40px;
    color: #2c3e50;
    /* 深灰色标题 */
    margin-bottom: 20px;
}

#start-screen button {
    margin: 10px;
    padding: 15px 30px;
    font-size: 18px;
    background-color: #3498db;
    /* 蓝色按钮 */
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

#start-screen button:hover {
    background-color: #2980b9;
    /* 深蓝色按钮 */
    transform: scale(1.1);
}

/* 解密模式样式 */
#decrypt-game {
    max-width: 90%;
    background-color: #fef9e7;
    /* 浅黄色背景 */
    padding: 50px;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    animation: fadeIn 1s ease-in-out;
    font-size: 18px;
}

#decrypt-game h1 {
    font-size: 36px;
    color: #d35400;
    /* 橙色标题 */
    margin-bottom: 20px;
}

#decrypt-game #game-area {
    margin-top: 20px;
    background-color: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

/* PK模式样式 */
#pk-game {
    max-width: 90%;
    background-color: #f9f9f9;
    /* 浅灰色背景 */
    padding: 50px;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    animation: fadeIn 1s ease-in-out;
    font-size: 18px;
}

#pk-game h1 {
    font-size: 36px;
    color: #8e44ad;
    /* 紫色标题 */
    margin-bottom: 20px;
}

#pk-area {
    display: flex;
    justify-content: space-between;
    gap: 50px;
    position: relative;
    padding: 0 20px;
}

#pk-area::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, #3498db, #9b59b6);
    transform: translateX(-50%);
}

.player {
    flex: 1;
    padding: 30px;
    font-size: 16px;
    background-color: #ffffff;
    /* 白色容器 */
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease;
}

.player:hover {
    transform: scale(1.05);
}

.player h2 {
    font-size: 24px;
    color: #2c3e50;
    /* 深灰色标题 */
    margin-bottom: 15px;
}

#player1-options button,
#player2-options button {
    display: block;
    margin: 10px auto;
    padding: 12px 20px;
    font-size: 16px;
    background-color: #1abc9c;
    /* 绿色按钮 */
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

#player1-options button:hover,
#player2-options button:hover {
    background-color: #16a085;
    /* 深绿色按钮 */
    transform: scale(1.1);
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 新增动画效果 */
.shake {
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    20%,
    60% {
        transform: translateX(-5px);
    }

    40%,
    80% {
        transform: translateX(5px);
    }
}

.story-intro {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    z-index: 1000;
    animation: fadeIn 0.5s ease-in-out;
}

.loading-animation {
    width: 50px;
    height: 50px;
    border: 5px solid #f3f3f3;
    border-top: 5px solid #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.story-completion {
    text-align: center;
    padding: 20px;
    animation: fadeIn 1s ease-in-out;
}

.story-completion button {
    margin-top: 20px;
    background-color: #3498db;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.story-completion button:hover {
    background-color: #2980b9;
    transform: scale(1.1);
}

/* 新增过渡消息样式 */
.transition-message {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.3);
    font-size: 20px;
    color: #2c3e50;
    z-index: 1000;
    text-align: center;
    animation: fadeIn 0.5s ease-in-out;
}

/* 新增奖励动画样式 */
.reward-animation {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 48px;
    color: #f39c12;
    animation: bounce 2s infinite;
}

/* 页面顶部样式 */
.page-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    /* 动态背景颜色渐变，优化过渡效果 */
    background: linear-gradient(90deg, #2c3e50, #3498db);
    animation: headerBackgroundAnimation 30s ease-in-out infinite alternate;
    color: #ecf0f1;
    /* 浅色文字 */
    padding: 20px;
    border-bottom: 2px solid #3498db;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.5s ease-in-out;
}

@keyframes headerBackgroundAnimation {
    0% {
        background: linear-gradient(90deg, #2c3e50, #3498db);
    }

    10% {
        background: linear-gradient(90deg, #2d3e51, #3397da);
    }

    20% {
        background: linear-gradient(90deg, #2e3f52, #3296d9);
    }

    30% {
        background: linear-gradient(90deg, #2f4053, #3195d8);
    }

    40% {
        background: linear-gradient(90deg, #304154, #3094d7);
    }

    50% {
        background: linear-gradient(90deg, #314255, #2f93d6);
    }

    60% {
        background: linear-gradient(90deg, #304154, #3094d7);
    }

    70% {
        background: linear-gradient(90deg, #2f4053, #3195d8);
    }

    80% {
        background: linear-gradient(90deg, #2e3f52, #3296d9);
    }

    90% {
        background: linear-gradient(90deg, #2d3e51, #3397da);
    }

    100% {
        background: linear-gradient(90deg, #2c3e50, #3498db);
    }
}

.page-header.shrink {
    padding: 5px 20px;
    background-color: #34db6c;
    color: #fff;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.page-header .header-content {
    text-align: center;
    transition: all 0.5s ease-in-out;
}

.page-header.shrink .header-content {
    transform: scale(0.8);
    text-align: left;
    margin-left: 20px;
}

.page-header h1 {
    font-size: 32px;
    /* 固定为鲜明的深蓝色，增强对比 */
    color: #ecf0f1;
    margin: 0;
    /* 移除原来的 colorChange 动画 */
}

.page-header.shrink h1 {
    font-size: 20px;
    color: #ffffff;
}

.page-header p {
    font-size: 18px;
    color: #ecf0f1;
    margin: 10px 0 0;
}

.page-header.shrink p {
    font-size: 14px;
    color: #fff;
}

/* 修改页眉说明文字颜色 */
.page-header .header-content p {
    color: #bdc3c7;
    /* 深一点的颜色，确保在深色背景中看清 */
}

/* 确保 academy-logo 始终位于 page-header 内部 */
.academy-logo {
    display: flex;
    justify-content: flex-end;
    /* 右对齐 */
    width: 100%;
    /* 确保父容器宽度占满 */
    position: absolute;
    top: 40%;
    /* 上下居中 */
    right: 5%;
    /* 靠右侧 10% */
    transform: translateY(-50%);
    /* 确保垂直居中 */

}

.page-header.shrink .academy-logo {
    display: flex;
    justify-content: flex-end;
    position: absolute;
    top: 30%;
    /* 上下居中 */
    right: 5%;
    /* 靠右侧 10% */
    transform: translateY(-50%);
    /* 确保垂直居中 */
    width: 100%;
    /* 仍占据 header 的 80% */
    height: auto;
}

/* 固定返回主页链接样式 */
.return-home {
    position: fixed;
    top: 10px;
    left: 10px;
    z-index: 3000;
    background-color: rgba(255, 255, 255, 0.8);
    border: 2px solid #3498db;
    border-radius: 8px;
    padding: 5px 10px;
    font-size: 14px;
}

.return-home a {
    color: #3498db;
    text-decoration: none;
    font-weight: bold;
}

.return-home a:hover {
    text-decoration: underline;
}

/* 页面底部样式 */
.page-footer {
    text-align: center;
    /* 动态背景颜色渐变，优化过渡效果 */
    background: linear-gradient(90deg, #2c3e50, #34495e);
    animation: footerBackgroundAnimation 30s ease-in-out infinite alternate;
    color: #ecf0f1;
    /* 浅色文字 */
    padding: 20px 10px;
    border-top: 2px solid #34495e;
    box-shadow: 0 -4px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    bottom: 0;
    width: 100%;
    font-size: 16px;
}

@keyframes footerBackgroundAnimation {
    0% {
        background: linear-gradient(90deg, #2c3e50, #34495e);
    }

    10% {
        background: linear-gradient(90deg, #2d3e51, #33485d);
    }

    20% {
        background: linear-gradient(90deg, #2e3f52, #32475c);
    }

    30% {
        background: linear-gradient(90deg, #2f4053, #31465b);
    }

    40% {
        background: linear-gradient(90deg, #304154, #30455a);
    }

    50% {
        background: linear-gradient(90deg, #314255, #2f4459);
    }

    60% {
        background: linear-gradient(90deg, #304154, #30455a);
    }

    70% {
        background: linear-gradient(90deg, #2f4053, #31465b);
    }

    80% {
        background: linear-gradient(90deg, #2e3f52, #32475c);
    }

    90% {
        background: linear-gradient(90deg, #2d3e51, #33485d);
    }

    100% {
        background: linear-gradient(90deg, #2c3e50, #34495e);
    }
}

.page-footer p {
    font-size: 16px;
    color: #ecf0f1;
    margin: 0;
}

.page-footer a {
    color: #ecf0f1;
    text-decoration: none;
    font-weight: bold;
}

.page-footer a:hover {
    text-decoration: underline;
}

/* 突出学校和学院名称 */
.page-footer p::before {
    content: "🏫 ";
    color: #2980b9;
}

.academy-logo {
    margin-top: 10px;
}

.academy-logo img {
    width: 150px;
    /* 放大Logo */
    height: auto;
    display: inline-block;
}

/* PK 模式按钮样式 */
.option-button {
    padding: 10px 20px;
    background-color: #1abc9c;
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    margin: 5px;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.option-button:hover {
    background-color: #16a085;
    transform: scale(1.1);
}

/* 倒计时样式 */
#countdown-timer {
    position: absolute;
    top: 100px;
    right: 10px;
    background-color: #f39c12;
    color: #fff;
    padding: 10px;
    border-radius: 8px;
    font-size: 18px;
    z-index: 1000;
    animation: fadeIn 0.5s ease-in-out;
}

/* 添加动画角色样式 */
.animated-character {
    position: fixed;
    width: 100px;
    height: 100px;
    pointer-events: none;
    z-index: 1000;
    transition: transform 0.1s ease-out;
}

.animated-character img {
    width: 100%;
    height: 100%;
}

/* 奖励动画效果 */
.reward-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1001;
}

.floating-reward {
    position: absolute;
    font-size: 40px;
    animation: floatUp 3s ease-out forwards;
}

@keyframes floatUp {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 1;
    }

    100% {
        transform: translateY(-100px) rotate(360deg);
        opacity: 0;
    }
}

/* 故事转场动画 */
.story-transition {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

.transition-content {
    background: white;
    padding: 30px;
    border-radius: 20px;
    text-align: center;
    position: relative;
    animation: poof 0.5s ease-out;
}

.transition-text {
    font-size: 24px;
    color: #2c3e50;
    margin: 20px 0;
}

.sparkles {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
}

.sparkles::before,
.sparkles::after {
    content: "✨";
    position: absolute;
    animation: sparkle 1s infinite;
}

@keyframes sparkle {

    0%,
    100% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.2);
        opacity: 0.8;
    }
}

@keyframes poof {
    0% {
        transform: scale(0);
        opacity: 0;
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* 新增互动装饰效果 */
.floating-decor {
    position: fixed;
    pointer-events: none;
    z-index: 2000;
    animation: floatUp 5s linear infinite;
}

@keyframes floatUp {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0.8;
    }

    100% {
        transform: translateY(-10vh) rotate(360deg);
        opacity: 0;
    }
}

/* 多彩小挂件样式 */
.decor-circle {
    width: 30px;
    height: 30px;
    background: radial-gradient(circle, #ff6b6b, #ff4757);
    border-radius: 50%;
}

.decor-star {
    font-size: 30px;
    color: #f1c40f;
}

/* 页面加载后随机生成几个互动装饰 */
@keyframes decorAppear {
    0% {
        transform: scale(0);
        opacity: 0;
    }

    50% {
        transform: scale(1.2);
        opacity: 1;
    }

    100% {
        transform: scale(1);
        opacity: 0;
    }
}

/* 可在页面各角落显示的闪耀元素 */
.shiny-badge {
    position: fixed;
    font-size: 40px;
    animation: decorAppear 3s ease-in-out infinite;
    z-index: 1500;
}

.shiny-badge.top-left {
    top: 20px;
    left: 20px;
    color: #e67e22;
}

.shiny-badge.top-right {
    top: 20px;
    right: 20px;
    color: #9b59b6;
}

.shiny-badge.bottom-left {
    bottom: 20px;
    left: 20px;
    color: #1abc9c;
}

.shiny-badge.bottom-right {
    bottom: 20px;
    right: 20px;
    color: #e74c3c;
}

/* 新增：为PK模式左右板块分别设置不同的渐变背景 */
#player1 {
    background: linear-gradient(135deg, #ffecd2, #fcb69f);
    /* 可增加内边距提高视觉效果 */
    padding: 20px;
}

#player2 {
    background: linear-gradient(135deg, #d4fc79, #96e6a1);
    padding: 20px;
}

/* 新增：PK动画效果，当比赛开始时在中间闪现“PK”字样 */
.pk-animation {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 80px;
    color: #e74c3c;
    font-weight: bold;
    animation: pkFlash 1s ease-out;
    z-index: 1500;
}

@keyframes pkFlash {
    0% {
        opacity: 0;
        transform: scale(0.5) translate(-50%, -50%);
    }

    50% {
        opacity: 1;
        transform: scale(1.2) translate(-50%, -50%);
    }

    100% {
        opacity: 0;
        transform: scale(1) translate(-50%, -50%);
    }
}

/* 新增：童趣互动效果，例如浮动气泡 */
.bubble {
    position: absolute;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    animation: floatBubble 8s infinite;
}

@keyframes floatBubble {
    0% {
        transform: translateY(100vh) scale(0.5);
        opacity: 0.8;
    }

    100% {
        transform: translateY(-10vh) scale(1);
        opacity: 0;
    }
}

/* 新增：飞舞的蝴蝶效果 */
.butterfly {
    position: fixed;
    width: 40px;
    height: 40px;
    background-image: url('assets/images/butterfly.png');
    /* 请确保该图片存在 */
    background-size: contain;
    background-repeat: no-repeat;
    animation: flyButterfly 8s linear infinite;
    pointer-events: none;
    z-index: 2000;
}

@keyframes flyButterfly {
    0% {
        transform: translate(0, 0) rotate(0deg);
        opacity: 1;
    }

    50% {
        transform: translate(200px, -150px) rotate(360deg);
        opacity: 0.8;
    }

    100% {
        transform: translate(0, 0) rotate(720deg);
        opacity: 1;
    }
}

/* 新增：鼠标点击后出现的彩色星星效果 */
.click-star {
    position: absolute;
    font-size: 24px;
    pointer-events: none;
    animation: starPop 0.8s ease-out forwards;
    z-index: 3000;
}

@keyframes starPop {
    0% {
        transform: scale(0);
        opacity: 1;
    }

    100% {
        transform: scale(2);
        opacity: 0;
    }
}

/* 新增：糖果图标飞舞效果 */
.candy {
    position: fixed;
    width: 30px;
    height: 30px;
    background-image: url('assets/images/candy.png');
    /* 请确保该图片存在 */
    background-size: contain;
    background-repeat: no-repeat;
    animation: floatCandy 10s linear infinite;
    pointer-events: none;
    z-index: 2000;
}

@keyframes floatCandy {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 1;
    }

    100% {
        transform: translateY(-10vh) rotate(360deg);
        opacity: 0;
    }
}

/* 新增：欢迎界面样式 */
#welcome-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #ffecd2, #fcb69f);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 4000;
    animation: fadeIn 1s ease-in-out;
}

.welcome-content {
    text-align: center;
    color: #2c3e50;
    animation: popUp 1s ease-out;
}

/* 更新欢迎界面图片，尺寸翻倍 */
.welcome-content img {
    width: 240px;
    /* 由 120px 增大一倍 */
    margin-bottom: 20px;
    /* 去掉动画 */
    animation: none;
    opacity: 0;
    animation: popUp 1s ease-out forwards;
}

@keyframes popUp {
    0% {
        transform: scale(0.5);
        opacity: 0;
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* 新增：侧边装饰样式 */
.side-decor {
    position: relative;
    /* 改为相对定位 */
    display: inline-block;
    z-index: 2000;
    margin: 10px;
    /* 添加间距以避免抢占其他模块位置 */
}

.side-decor img {
    width: 100px;
    /* 固定宽度 */
    height: auto;
    /* 高度自适应 */
    display: block;
}

/* 右侧娃娃：正常尺寸，位于屏幕右侧中部 */
.right-decor {
    right: -20px;
    top: 20%;
}

/* 调整左侧装饰位置：下移至中下方 */
.left-decor {
    left: 0;
    top: 40%;
}

/* 更新侧边装饰：左侧和右侧图片尺寸放大 */
.left-decor img {
    width: 170px;
    /* 由60px变为120px */
    height: auto;
    display: block;
    margin: 10px;
}

.right-decor img {
    width: 200px;
    /* 由80px变为160px */
    height: auto;
    display: block;
    margin: 10px;
}

/* 更新 cute 系列图片的位置 */
.side-decor.right-decor {
    position: absolute;
    right: 0;
    top: 30%;
    transform: translateY(-50%);
}

.side-decor.left-decor {
    position: absolute;
    left: 0;
    top: 60%;
    transform: translateY(-50%);
}

.extra-decor.top-decor {
    position: absolute;
}

.extra-decor.bottom-decor {
    position: absolute;
    right: 0;
    /* 改为右边界 */
    bottom: 5%;
    /* 靠下很多 */
    transform: translateX(-10%);
}

/* 更新侧边装饰：左侧和右侧图片尺寸放大 */
.extra-decor img {
    height: auto;
    display: block;
    margin: 10px;
}

/* 新增：PK附加模块 */
#pk-extra {
    margin-top: 20px;
    padding: 15px;
    background: linear-gradient(135deg, #ff9a9e, #fad0c4);
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    animation: fadeIn 1s ease-in-out;
}

#pk-extra h3 {
    margin: 0 0 10px;
    color: #c0392b;
}

#pk-extra p {
    margin: 0;
    color: #2c3e50;
}

/* 新增：欢迎按钮 */
#welcome-screen button {
    margin-top: 20px;
    padding: 12px 24px;
    background-color: #3498db;
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s ease;
}

#welcome-screen button:hover {
    transform: scale(1.1);
}

/* 新增：简单滑入动画 */
@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* 新增额外装饰样式 */
.extra-decor {
    position: relative;
    /* 改为相对定位 */
    display: inline-block;
    z-index: 1900;
    margin: 10px;
    /* 添加间距 */
}

.extra-decor img {
    height: auto;
    /* 高度自适应 */
    display: block;
}

/* 更新额外装饰元素尺寸翻倍 */
.extra-decor.top-decor {
    top: 2%;
    left: 1%;
    width: 250px;

}

.extra-decor.bottom-decor {
    bottom: 0.5%;
    right: 5%;
    width: 300px;

}

.extra-decor img {
    width: 100%;
    height: auto;
}

/* 更新页脚内部布局：左右分布 */
.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
}

#story-description {
    font-size: 18px;
    color: #34495e;
    /* 深灰色 */
    font-weight: bold;
    margin-bottom: 15px;
}

#narrative {
    font-size: 16px;
    color: #2c3e50;
    /* 更深的灰色 */
    font-style: italic;
    line-height: 1.6;
    margin-top: 10px;
}

#story-selection {
    display: none;
    background: linear-gradient(135deg, #ffecd2, #fcb69f);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    animation: fadeIn 1s ease-in-out;
    text-align: center;
}

#story-selection h1 {
    font-size: 36px;
    color: #e74c3c;
    margin-bottom: 30px;
    text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.3);
}

.story-button {
    display: inline-block;
    width: 120px;
    /* 固定宽度 */
    height: 60px;
    /* 固定高度 */
    line-height: 60px;
    /* 垂直居中 */
    text-align: center;
    /* 水平居中 */
    margin: 10px;
    padding: 0;
    /* 移除内边距 */
    font-size: 16px;
    font-weight: bold;
    color: #fff;
    background: linear-gradient(45deg, #ff9a9e, #fad0c4);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.story-button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    background: linear-gradient(45deg, #fcb69f, #ffecd2);
}

.story-button:active {
    transform: scale(0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

/* 跳过按钮样式 */
#skip-button {
    padding: 12px 24px;
    background: linear-gradient(45deg, #e74c3c, #f39c12);
    color: #fff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    font-size: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    text-transform: uppercase;
    font-weight: bold;
    letter-spacing: 1px;
    margin-left: 10px;
}

#skip-button:hover {
    background-color: #e67e22;
    transform: scale(1.1);
}