/* ===== 全局重置 & 字体 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', 'Roboto', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
    background: #f3efea;
    color: #2c3e4f;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 16px;
    position: relative;
}

/* 整体平滑容器 */
.page-wrapper {
    width: 100%;
    max-width: 1200px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* ===== 头部 (HEADER) ===== */
.site-header {
    background: white;
    border-radius: 40px 40px 24px 24px;
    padding: 18px 30px;
    box-shadow: 0 6px 16px rgba(0,0,0,0.03);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    border-bottom: 2px solid #e7d8cc;
    transition: all 0.2s;
}
.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
}
.logo-icon {
    background: #b45f4b;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    font-weight: 500;
    box-shadow: 0 4px 8px #e2c5b5;
    transition: transform 0.3s;
}
.logo-icon:hover { transform: rotate(8deg) scale(1.02); }
.site-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #653f2e;
    letter-spacing: 0.5px;
}
.header-nav {
    display: flex;
    gap: 8px 20px;
    flex-wrap: wrap;
}
.header-nav a {
    text-decoration: none;
    color: #5c4e44;
    padding: 6px 12px;
    border-radius: 40px;
    font-weight: 500;
    transition: 0.2s;
    background: #fbf6f2;
}
.header-nav a:hover {
    background: #dab9aa;
    color: white;
    transform: translateY(-2px);
}
.header-nav a.active {
    background: #b45f4b;
    color: white;
}

/* ===== 搜索条 (虽然在首页未使用但保留样式以备后续) ===== */
.search-section {
    background: white;
    border-radius: 80px;
    padding: 8px 8px 8px 24px;
    display: flex;
    align-items: center;
    box-shadow: 0 8px 20px rgba(0,0,0,0.04);
    border: 1px solid #f0e3d8;
    margin: 10px 0 20px;
}
.search-input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 1.1rem;
    padding: 12px 5px;
    background: transparent;
    color: #2c3e4f;
    font-family: inherit;
}
.search-input::placeholder {
    color: #ab988b;
    font-weight: 300;
}
.search-btn {
    background: #b45f4b;
    border: none;
    color: white;
    padding: 12px 32px;
    border-radius: 60px;
    font-size: 1.05rem;
    font-weight: 500;
    cursor: pointer;
    transition: 0.2s;
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}
.search-btn:hover {
    background: #8f4a3a;
    transform: scale(1.02);
}
@media (max-width: 600px) {
    .search-section { padding: 5px 5px 5px 16px; }
    .search-btn { padding: 10px 20px; font-size: 0.95rem; }
}

/* ===== 主内容卡片 ===== */
.home-container {
    background-color: #ffffff;
    border-radius: 48px 48px 36px 36px;
    box-shadow: 0 20px 36px -8px rgba(85, 66, 54, 0.12);
    overflow: hidden;
    padding: 32px 36px;
    transition: padding 0.3s, border-radius 0.3s;
    border: 1px solid #f0e3d8;
}
@media (max-width: 600px) {
    .home-container { padding: 20px 18px; border-radius: 30px; }
}

/* 欢迎语 */
.welcome-block {
    background: #faf7f4;
    border-radius: 40px;
    padding: 28px 32px;
    margin-bottom: 30px;
    border: 1px solid #eee5dd;
    text-align: center;
}
.welcome-title {
    font-size: 2.2rem;
    font-weight: 600;
    color: #653f2e;
    margin-bottom: 10px;
}
.welcome-desc {
    font-size: 1.15rem;
    color: #5b4e41;
    max-width: 700px;
    margin: 0 auto;
}

/* 模块标题 */
.section-head {
    font-size: 1.5rem;
    font-weight: 620;
    color: #a6503a;
    display: flex;
    align-items: center;
    margin: 30px 0 20px;
    border-left: 8px solid #d5b9a5;
    padding-left: 18px;
    background: linear-gradient(to right, #fdf9f6, transparent);
}
.section-head:first-of-type { margin-top: 0; }

/* 分类卡片网格 */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}
.category-card {
    background: #fdfaf7;
    border-radius: 30px;
    padding: 18px 12px;
    border: 1px solid #e5d6cb;
    transition: 0.18s;
    text-align: center;
    text-decoration: none;
    color: inherit;
}
.category-card:hover {
    transform: translateY(-5px);
    background: #fdf6f0;
    border-color: #c0a18b;
    box-shadow: 0 10px 18px #ecd7cb;
}
.category-icon {
    font-size: 2.2rem;
    margin-bottom: 8px;
}
.category-name {
    font-weight: 600;
    font-size: 1.1rem;
    color: #744d39;
}
.category-count {
    font-size: 0.85rem;
    color: #8f7a6b;
    margin-top: 4px;
}

/* 热门成语 - 标签云风格 */
.hot-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 16px;
    margin: 20px 0 30px;
}
.hot-tag {
    background: white;
    padding: 8px 24px;
    border-radius: 60px;
    border: 1px solid #dab9aa;
    color: #6d4c3d;
    transition: 0.15s;
    text-decoration: none;
    font-size: 1.05rem;
}
.hot-tag:hover {
    background: #b45f4b;
    color: white;
    border-color: #b45f4b;
    transform: scale(1.02);
}

/* 精选专题 - 两列布局 */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin: 20px 0;
}
.feature-card {
    background: #faf7f4;
    border-radius: 32px;
    padding: 20px;
    border: 1px solid #e5d6cb;
    transition: 0.2s;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
}
.feature-card:hover {
    transform: translateY(-5px);
    background: #fdf6f0;
    border-color: #c0a18b;
    box-shadow: 0 12px 20px #ecd7cb;
}
.feature-title {
    font-size: 1.3rem;
    font-weight: 650;
    color: #744d39;
    margin-bottom: 8px;
}
.feature-desc {
    color: #5b5b5b;
    font-size: 0.95rem;
    margin-bottom: 12px;
    flex: 1;
}
.feature-meta {
    color: #936b58;
    font-size: 0.9rem;
    border-top: 1px dashed #d0b9ab;
    padding-top: 10px;
}

/* 最新成语列表 - 一行一个 */
.new-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 20px 0;
}
.new-item {
    background: #fdfaf7;
    border-radius: 40px;
    padding: 14px 24px;
    border: 1px solid #e5d6cb;
    transition: 0.2s;
    display: flex;
    align-items: baseline;
    gap: 16px;
    text-decoration: none;
    color: inherit;
}
.new-item:hover {
    background: #fdf6f0;
    border-color: #c0a18b;
    transform: translateX(5px);
    box-shadow: 0 6px 12px #ecd7cb;
}
.new-name {
    font-weight: 650;
    font-size: 1.2rem;
    color: #744d39;
    white-space: nowrap;
}
.new-desc {
    color: #5b5b5b;
    font-size: 0.95rem;
    flex: 1;
}
@media (max-width: 500px) {
    .new-item { flex-wrap: wrap; gap: 6px; padding: 12px 18px; }
    .new-name { white-space: normal; }
}

/* 按拼音索引 */
.pinyin-index {
    background: #f2ebe6;
    border-radius: 60px;
    padding: 16px 24px;
    margin: 30px 0 10px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px 14px;
}
.pinyin-letter {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: 50%;
    color: #6d4c3d;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.15rem;
    transition: 0.15s;
    border: 1px solid #dab9aa;
}
.pinyin-letter:hover {
    background: #b45f4b;
    color: white;
    border-color: #b45f4b;
    transform: scale(1.05);
}

/* ===== 底部 FOOTER (与内页一致) ===== */
.site-footer {
    background: #282c35;  /* 纯色背景，无渐变 */
    color: #9a928b;
    border-radius: 36px 36px 24px 24px;
    padding: 24px 32px 16px;
    margin-top: 18px;
    border-top: 1px solid #3f424b;
    font-size: 0.85rem;  /* 全局小字体 */
}

/* 主底部区域 */
.footer-main {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 16px;
}

/* 友情链接区域 - 无任何背景和边框 */
.friend-links {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 4px 8px;
    color: #8a7f74;
    font-size: 0.8rem;  /* 更小的字体 */
    line-height: 1.5;
}

/* 友情链接标签 */
.friend-label {
    color: #bcae9f;
    margin-right: 4px;
}

/* 单个友情链接 - 无任何样式 */
.friend-link {
    color: #9a928b;
    text-decoration: none;
    font-size: 0.8rem;
}

.friend-link:hover {
    color: #dbb7a6;  /* 仅鼠标悬停时轻微变色 */
    text-decoration: underline;  /* 添加下划线提示可点击 */
}

/* 链接分隔符 */
.link-sep {
    color: #4a4f58;
    font-size: 0.7rem;
}

/* 版权信息区域 - 无背景 */
.footer-copyright {
    font-size: 0.8rem;
    color: #8a7f74;
    border-top: 1px solid #353a43;  /* 极细分割线 */
    padding-top: 12px;
}

.copyright-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 8px 16px;
}

/* 版权链接 */
.footer-links {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 4px 8px;
}

.footer-links a {
    color: #9a928b;
    text-decoration: none;
    font-size: 0.75rem;  /* 更小的字体 */
}

.footer-links a:hover {
    color: #dbb7a6;
    text-decoration: underline;
}

/* 分隔点 */
.sep-dot {
    color: #4a4f58;
    font-size: 0.7rem;
}

/* 底部备案信息 */
.footer-bottom {
    font-size: 0.7rem;  /* 最小的字体 */
    color: #6a625a;
    border-top: 1px solid #353a43;
    padding-top: 12px;
    text-align: center;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .site-footer {
        padding: 20px 20px 12px;
        border-radius: 24px 24px 16px 16px;
    }
    
    .copyright-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .friend-links {
        gap: 4px 6px;
    }
}

@media (max-width: 480px) {
    .friend-links {
        font-size: 0.75rem;
    }
    
    .friend-link {
        font-size: 0.75rem;
    }
    
    .footer-links {
        gap: 4px;
    }
}

/* 响应式调整 */
@media (min-width: 768px) {
    .footer-main {
        flex-direction: row;
        align-items: stretch;
    }
    
    .friend-links {
        flex: 2;
    }
    
    .footer-copyright {
        flex: 1;
        display: flex;
        align-items: center;
    }
    
    .friend-links-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }
}

@media (max-width: 767px) {
    .site-footer {
        padding: 30px 20px 15px;
        border-radius: 30px 30px 20px 20px;
    }
    
    .friend-links {
        padding: 20px;
    }
    
    .friend-links-grid {
        grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
        gap: 8px;
    }
    
    .friend-link {
        padding: 6px 10px;
        font-size: 0.85rem;
    }
    
    .footer-copyright {
        padding: 20px;
    }
    
    .highlight {
        font-size: 1rem;
    }
    
    .footer-links {
        flex-wrap: wrap;
    }
    
    .beian {
        flex-direction: column;
        gap: 5px;
    }
    
    .beian::before {
        display: none;
    }
}

/* 超小屏幕适配 */
@media (max-width: 480px) {
    .friend-links-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-title {
        font-size: 1.1rem;
    }
    
    .footer-links a {
        font-size: 0.8rem;
    }
    
    .sep-dot {
        margin: 0 2px;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.site-footer {
    animation: fadeInUp 0.6s ease-out;
}

/* 友情链接悬停特效 */
.friend-link {
    position: relative;
    overflow: hidden;
}

.friend-link::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
    z-index: -1;
}

.friend-link:hover::before {
    width: 200px;
    height: 200px;
}
.footer-qr {
    display: flex;
    align-items: center;
    gap: 15px;
    background: rgba(180, 95, 75, 0.1);
    padding: 10px 20px;
    border-radius: 50px;
    margin-top: 10px;
}

.qr-icon {
    width: 40px;
    height: 40px;
    background: #b45f4b;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
}

.qr-text {
    display: flex;
    flex-direction: column;
}

.qr-text .title {
    font-weight: 600;
    color: #f0cfbc;
    font-size: 0.9rem;
}

.qr-text .desc {
    font-size: 0.75rem;
    color: #9a8c7f;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 20px;
    width: 48px;
    height: 48px;
    background: #b45f4b;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    border: 2px solid #f0e3d8;
}
.back-to-top.show {
    opacity: 1;
    visibility: visible;
}
.back-to-top:hover {
    background: #8f4a3a;
    transform: translateY(-5px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.25);
}

/* 响应式调整 */
@media (max-width: 700px) {
    .footer-main { flex-direction: column; align-items: flex-start; gap: 16px; }
    .footer-wechat { align-self: flex-start; }
    .footer-bottom-row { flex-direction: column; align-items: flex-start; gap: 12px; }
}
@media (max-width: 600px) {
    .back-to-top { bottom: 20px; right: 15px; width: 44px; height: 44px; font-size: 22px; }
    .welcome-title { font-size: 1.8rem; }
}