:root {
    --background-color: #FFF5EE;
    --primary-color: #FFD699;
    --accent-color: #95C5B0;
    --text-color: #2D4356;
    --content-width: min(90%, 1200px);
    --spacing-unit: clamp(1rem, 2vw, 2rem);
}

body {
    margin: 0;
    padding: 0;
    background-color: var(--background-color);
    font-family: 'Noto Serif SC', serif;
    min-height: 100vh;
}

/* 返回按钮样式 */
.back-button {
    position: fixed;
    top: 20px;
    left: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 1000;
    font-family: 'Noto Serif SC', serif;
}

.back-button:hover {
    transform: translateX(-5px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.back-icon {
    font-size: 20px;
}

/* 页面通用样式 */
.page-title {
    font-size: 32px;
    color: var(--text-color);
    text-align: center;
    margin-bottom: 40px;
    font-family: 'Noto Serif SC', serif;
}

/* 关于页面样式 */
.about-section {
    padding: 60px 0;
}

.about-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.about-content {
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.story-section,
.team-section,
.contact-section {
    margin-bottom: 40px;
}

.about-content h3 {
    font-size: 24px;
    color: var(--text-color);
    margin-bottom: 20px;
    font-family: 'Noto Serif SC', serif;
}

.about-content p {
    line-height: 1.8;
    color: #666;
    margin-bottom: 15px;
}

.team-section ul {
    list-style: none;
    padding-left: 20px;
    margin: 15px 0;
}

.team-section li {
    margin-bottom: 12px;
    position: relative;
    color: #666;
}

.team-section li:before {
    content: "•";
    color: var(--primary-color);
    font-weight: bold;
    position: absolute;
    left: -20px;
}

.contact-info {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    margin-top: 15px;
}

.contact-info p {
    margin: 10px 0;
    color: #666;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .back-button {
        top: 10px;
        left: 10px;
        padding: 8px 15px;
        font-size: 14px;
    }

    .back-icon {
        font-size: 16px;
    }

    .about-content {
        padding: 20px;
    }
    
    .page-title {
        font-size: 28px;
        margin-top: 60px;
    }
    
    .about-content h3 {
        font-size: 20px;
    }
} 

/* 时间胶囊页面样式 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.feature-card {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card.highlight {
    grid-column: 1 / -1;
    background: linear-gradient(135deg, #fff5f5, #fff);
    border: 2px solid var(--primary-color);
}

.feature-icon {
    font-size: 36px;
    margin-bottom: 20px;
}

.feature-card h3 {
    color: var(--text-color);
    margin-bottom: 15px;
    font-size: 20px;
}

.promotion-tag {
    margin-top: 15px;
    color: var(--primary-color);
    font-weight: 500;
}

/* 引用和故事部分 */
.quote-section {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
}

.quote-main {
    text-align: center;
    margin-bottom: 40px;
}

.quote-main h3 {
    font-size: 28px;
    color: var(--text-color);
    margin-bottom: 10px;
}

.quote-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.quote-card {
    background: white;
    padding: 25px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.story-section {
    background: white;
    padding: 30px;
    border-radius: 12px;
    margin-bottom: 40px;
}

.story-text {
    font-size: 16px;
    line-height: 1.8;
    color: #666;
    margin-bottom: 20px;
}

.reflection {
    padding: 20px;
    background: #f8f9fa;
    border-radius: 8px;
}

.reflection p {
    margin-bottom: 15px;
    color: #666;
}

.ending-section {
    text-align: center;
    padding: 40px 0;
}

.nostalgic-text {
    margin-top: 30px;
    font-style: italic;
    color: var(--primary-color);
}

.nostalgic-text p {
    margin: 8px 0;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr;
    }

    .quote-grid {
        grid-template-columns: 1fr;
    }

    .feature-card {
        padding: 20px;
    }

    .quote-main h3 {
        font-size: 24px;
    }
} 

/* 基础响应式设置 */
:root {
    --content-width: min(90%, 1200px);
    --spacing-unit: clamp(1rem, 2vw, 2rem);
}

/* 响应式字体大小 */
html {
    font-size: clamp(14px, 1.5vw, 16px);
}

/* 移动端适配 */
@media (max-width: 768px) {
    .back-button {
        top: 10px;
        left: 10px;
        padding: 8px 15px;
        font-size: 14px;
    }

    .letter-container {
        margin: 40px auto 20px;
        padding: 0 15px;
    }

    .letter-form {
        padding: 20px;
    }

    textarea {
        font-size: 16px; /* 防止iOS自动缩放 */
        padding: 0 15px 15px 30px;
    }

    .modal-content {
        width: 95%;
        padding: 20px;
    }

    .form-group {
        margin-bottom: 15px;
    }

    .modal-input {
        font-size: 16px; /* 防止iOS自动缩放 */
    }
}

/* 适配超小屏幕 */
@media (max-width: 320px) {
    .modal-content {
        padding: 15px;
    }

    .modal-button {
        padding: 8px 15px;
        font-size: 14px;
    }
} 

/* 全局按钮样式 */
button, .main-button, .api-button, .modal-button.confirm {
    background-color: var(--primary-color);
    color: #333; /* 黑色文字 */
    transition: all 0.3s ease;
}

button:hover, .main-button:hover, .api-button:hover, .modal-button.confirm:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 214, 153, 0.4);
} 

/* 固定导航栏样式 */
.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 245, 238, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 15px 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.nav-links {
    display: flex;
    justify-content: center;
    gap: 30px;
}

.nav-links a {
    color: var(--text-color, #2D4356);
    text-decoration: none;
    font-size: 18px;
    padding: 8px 24px;
    border-radius: 20px;
    transition: background 0.3s, color 0.3s;
    font-family: 'Noto Serif SC', serif;
}

.nav-links a.active,
.nav-links a:hover {
    background: #FFD699;
    color: #333;
}

/* 圆形图标按钮样式 */
.nav-links a {
    /* 恢复主页风格，去除圆形按钮样式 */
    background: none;
    color: var(--text-color, #2D4356);
    display: inline-block;
    font-size: 18px;
    padding: 8px 24px;
    border-radius: 20px;
    box-shadow: none;
    transition: background 0.3s, color 0.3s;
}

.nav-links a:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 5px 15px rgba(255, 214, 153, 0.4);
}

.nav-links a:active {
    transform: translateY(0) scale(0.95);
} 

/* 二维码样式 */
.qrcode-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 20px;
    padding: 20px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.qrcode {
    width: 500px;
    height: 150px;
    object-fit: contain;
    margin-bottom: 10px;
}

.qrcode-hint {
    font-size: 14px;
    color: #666;
    margin: 0;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .qrcode {
        width: 160px;
        height: 160px;
    }
} 

.mailbox-section,
.capsule-section,
.about-section,
#home {
    margin-top: 80px; /* 或根据导航栏高度调整 */
}