/* ===== 文思阁 全局样式 ===== */
/* 配色铁律：米白底 #F8F5F0 / 正文 #222222 / 暗红 #9E2B25 / 浅灰 #EAE5DC */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: #F8F5F0;
    color: #222222;
    font-family: "Songti SC", "SimSun", "STSong", serif;
    line-height: 1.8;
    max-width: 1200px;
    margin: 0 auto;
    padding: 30px;
}

/* 头部：Logo + 站名 + 标语 */
header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid #9E2B25;
}
.logo img {
    height: 64px;
}
.site-title h1 {
    font-size: 32px;
    color: #222222;
    letter-spacing: 4px;
}
.site-title p {
    color: #9E2B25;
    font-size: 16px;
    letter-spacing: 2px;
}

/* 固定置顶导航 */
nav {
    position: sticky;
    top: 0;
    background-color: #F8F5F0;
    z-index: 10;
    border-bottom: 1px solid #EAE5DC;
    margin-bottom: 30px;
}
nav ul {
    display: flex;
    gap: 35px;
    list-style: none;
    padding: 14px 0;
    flex-wrap: wrap;
}
nav a {
    text-decoration: none;
    font-size: 18px;
    color: #222222;
    padding: 6px 12px;
    border-radius: 4px;
    transition: background-color 0.2s, color 0.2s;
}
nav a:hover,
nav a.active {
    background-color: #9E2B25;
    color: #F8F5F0;
}

/* 专题轮播（手动切换，无自动播放） */
.slider-box {
    margin: 40px 0;
    text-align: center;
}
.slide {
    display: none;
    padding: 20px;
}
.slide.active {
    display: block;
}
.slide img {
    max-width: 700px;
    width: 100%;
    border: 1px solid #EAE5DC;
    border-radius: 8px;
    margin-bottom: 16px;
}
.slide h3 {
    font-size: 24px;
    color: #9E2B25;
    margin-bottom: 10px;
}
.slide p {
    font-size: 16px;
    color: #444;
    max-width: 600px;
    margin: 0 auto 14px;
}
.slide-link {
    display: inline-block;
    color: #9E2B25;
    text-decoration: none;
    font-size: 16px;
    border-bottom: 1px solid #9E2B25;
    padding-bottom: 2px;
}
.slider-btn {
    margin-top: 16px;
}
.slider-btn button {
    background: #9E2B25;
    color: #F8F5F0;
    border: none;
    padding: 8px 18px;
    margin: 0 8px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 15px;
    transition: opacity 0.2s;
}
.slider-btn button:hover {
    opacity: 0.85;
}

/* 四大分区卡片（响应式网格） */
.card-wrap {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    margin: 60px 0;
}
.card {
    border: 1px solid #9E2B25;
    border-radius: 8px;
    padding: 28px 20px;
    text-align: center;
    background-color: #FFFFFF;
    transition: background-color 0.2s;
}
.card:hover {
    background-color: #EAE5DC;
}
.card h4 {
    font-size: 22px;
    margin-bottom: 12px;
    color: #9E2B25;
}
.card p {
    font-size: 15px;
    color: #555;
    margin-bottom: 14px;
}
.card a {
    display: inline-block;
    color: #222222;
    text-decoration: none;
    border-bottom: 1px solid #9E2B25;
    padding-bottom: 2px;
}

/* 每日名句 */
.sentence-box {
    border: 1px solid #9E2B25;
    border-radius: 8px;
    padding: 40px;
    text-align: center;
    margin: 50px 0;
    background-color: #FFFFFF;
}
.sentence-box h3 {
    color: #9E2B25;
    margin-bottom: 18px;
    letter-spacing: 2px;
}
#dailySentence {
    font-size: 24px;
    color: #222222;
    line-height: 1.6;
}
#sentenceSource {
    margin-top: 12px;
    font-size: 15px;
    color: #9E2B25;
}
.sentence-btn {
    margin-top: 20px;
    background: #9E2B25;
    color: #F8F5F0;
    border: none;
    padding: 8px 22px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 15px;
    transition: opacity 0.2s;
}
.sentence-btn:hover {
    opacity: 0.85;
}

/* 页脚 */
footer {
    margin-top: 80px;
    text-align: center;
    color: #666;
    padding-top: 20px;
    border-top: 1px solid #EAE5DC;
    font-size: 14px;
}

img {
    max-width: 100%;
}

/* 响应式：平板 */
@media (max-width: 1024px) {
    .card-wrap {
        grid-template-columns: repeat(2, 1fr);
    }
}
/* 响应式：手机 */
@media (max-width: 768px) {
    body {
        padding: 16px;
    }
    .site-title h1 {
        font-size: 26px;
    }
    nav ul {
        gap: 16px;
    }
    nav a {
        font-size: 16px;
        padding: 6px 8px;
    }
    .card-wrap {
        grid-template-columns: 1fr;
    }
    .sentence-box {
        padding: 28px 16px;
    }
    #dailySentence {
        font-size: 20px;
    }
}

/* ===== 可点击展开条目（表面文字框 → 点击弹出长文） ===== */
.zone-title {
    color: #9E2B25;
    margin-bottom: 8px;
    border-bottom: 1px solid #9E2B25;
    padding-bottom: 10px;
    letter-spacing: 1px;
}
.zone-hint {
    color: #888;
    font-size: 14px;
    margin-bottom: 28px;
    letter-spacing: 1px;
}
.entry {
    border: 1px solid #9E2B25;
    border-radius: 8px;
    padding: 22px 26px;
    margin-bottom: 26px;
    background-color: #FFFFFF;
    cursor: pointer;
    transition: background-color 0.2s, box-shadow 0.2s;
    animation: fadeInUp 0.5s ease both;
}
.entry:hover {
    background-color: #F8F5F0;
    box-shadow: 0 2px 12px rgba(158, 43, 37, 0.08);
}
.entry:nth-of-type(1) { animation-delay: 0.04s; }
.entry:nth-of-type(2) { animation-delay: 0.10s; }
.entry:nth-of-type(3) { animation-delay: 0.16s; }
.entry:nth-of-type(4) { animation-delay: 0.22s; }
.entry-tag {
    display: inline-block;
    font-size: 13px;
    color: #9E2B25;
    border: 1px solid #9E2B25;
    border-radius: 12px;
    padding: 2px 12px;
    margin-bottom: 12px;
    letter-spacing: 1px;
}
.entry-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}
.entry-head h3 {
    color: #9E2B25;
    font-size: 22px;
    letter-spacing: 1px;
}
.toggle {
    color: #9E2B25;
    font-size: 18px;
    transition: transform 0.3s ease;
    flex-shrink: 0;
}
.entry.open .toggle {
    transform: rotate(180deg);
}
.entry-preview {
    margin-top: 12px;
    font-size: 17px;
    color: #333;
    line-height: 1.9;
}
.entry-detail {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.32s ease;
}
.entry.open .entry-detail {
    grid-template-rows: 1fr;
}
.entry-detail-inner {
    overflow: hidden;
    opacity: 0;
    transition: opacity 0.3s ease 0.05s;
}
.entry.open .entry-detail-inner {
    opacity: 1;
}
.entry-detail-inner hr.divider-soft {
    margin: 18px 0 4px;
    border: none;
    border-top: 1px dashed #EAE5DC;
}
.entry-detail-inner p {
    margin-top: 14px;
    font-size: 16px;
    color: #333;
    line-height: 2;
    text-align: justify;
}

/* 轻柔入场动效（不循环、不刺眼） */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
    .entry { animation: none; }
    .entry-detail, .toggle, .entry-detail-inner { transition: none; }
}