/* ============================================================
   公共样式：全局、顶部导航、底部、主体布局、侧边栏公共模块
   ============================================================ */
:root {
    /* ---------- 主色板 ---------- */
    --color-ink: #26231C;         /* 墨黑：标题、重点 */
    --color-ink-soft: #4A453A;    /* 墨褐：正文 */
    --color-beige: #C7BCA4;       /* 浅米棕：卡片描边、分割 */
    --color-crimson: #A63A2E;     /* 绛红：强调色 */
    --color-cream: #F6F1E6;       /* 米白：页面底色 */

    /* ---------- 语义色 ---------- */
    --bg-color: var(--color-cream);
    --card-bg: #FBF8F0;                      /* 卡片比底色亮一档，靠描边成形 */
    --text-color: var(--color-ink-soft);     /* 正文 */
    --heading-color: var(--color-ink);       /* 标题 */
    --text-secondary: #6B6455;               /* 次要文字 */
    --text-muted: #968C79;                   /* 辅助文字（面包屑等） */
    --accent-color: var(--color-crimson);    /* 链接与强调 */
    --accent-deep: #8A2E24;                  /* 强调色加深（悬停/选中） */
    --accent-soft: #F3E3DC;                  /* 强调色浅底 */
    --border-color: #E6DECB;                 /* 细分割线 */
    --border-strong: var(--color-beige);     /* 卡片描边，结构更清晰 */
    --shadow-soft: 0 1px 3px rgba(38, 35, 28, .05);
    --serif-font: "Noto Serif SC", "Source Han Serif SC", "STSong", "SimSun", serif;   /* 思源宋体 */
    --sans-font: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif; /* 思源黑体 */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--sans-font);
    font-size: 17px;
    line-height: 1.9;
    background: var(--bg-color);
    color: var(--text-color);
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--accent-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

img {
    max-width: 100%;
    border: 0;
}
 
/* ---------- 无障碍工具类：视觉隐藏，但保留标题语义与锚点结构 ---------- */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    border: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

/* ---------- 顶部导航 ---------- */
.header {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-strong);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 14px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
}

.header-brand {
    display: flex;
    align-items: center;
    gap: 16px;
    min-width: 0;
}

.logo img {
    height: 46px;
    display: block;
}

.site-slogan {
    font-family: var(--serif-font);
    font-size: 17px;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 2px;
    white-space: nowrap;
    padding-left: 16px;
    border-left: 1px solid var(--border-strong);
}

.main-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 26px;
}

.main-nav a {
    position: relative;
    color: var(--heading-color);
    font-family: var(--serif-font);
    font-size: 19px;
    font-weight: 600;
    letter-spacing: 2px;
    padding: 8px 4px;
    transition: color .25s ease;
}

/* 下划线动效：从中间向两侧展开，替代生硬的颜色切换 */
.main-nav a::after {
    content: "";
    position: absolute;
    left: 4px;
    right: 6px;   /* 末字字距补偿，让下划线与文字视觉等宽 */
    bottom: 3px;
    height: 2px;
    background: var(--accent-color);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform .3s ease;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--accent-deep);
    text-decoration: none;
}

.main-nav a:hover::after,
.main-nav a.active::after {
    transform: scaleX(1);
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
    max-width: 1200px;
    margin: 16px auto 0;
    padding: 0 16px;
    font-size: 14px;
    color: var(--text-muted);
}

.crumb-inner a {
    color: var(--text-secondary);
}

.crumb-inner a:hover {
    color: var(--accent-deep);
}

.crumb-inner span {
    margin: 0 8px;
    color: var(--border-strong);
}

.crumb-inner em {
    font-style: normal;
    color: var(--heading-color);
}

/* ---------- 主体布局 ---------- */
.container {
    max-width: 1200px;
    margin: 16px auto 28px;
    padding: 0 16px;
    display: flex;
    align-items: flex-start;
    gap: 24px;
}

.content {
    flex: 1;
    min-width: 0;
}

.sidebar {
    width: 320px;
    flex-shrink: 0;
}

/* ---------- 侧边栏公共模块（热门诗句 / 经典诗词） ---------- */
.author-works {
    background: var(--card-bg);
    border: 1px solid var(--border-strong);
    border-radius: 8px;
    padding: 20px 18px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-soft);
}

.author-works h2 {
    font-family: var(--serif-font);
    font-size: 20px;
    font-weight: 600;
    color: var(--heading-color);
    letter-spacing: 1px;
    padding-bottom: 12px;
    margin-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.author-works ol {
    list-style: none;
    counter-reset: works-num;
}

.author-works ol li {
    counter-increment: works-num;
    position: relative;
    padding: 10px 0 10px 28px;
    border-bottom: 1px dashed var(--border-color);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.author-works ol li:last-child {
    border-bottom: 0;
}

.author-works ol li::before {
    content: counter(works-num);
    position: absolute;
    left: 0;
    top: 12px;
    width: 20px;
    font-size: 14px;
    color: var(--accent-color);
    font-family: var(--serif-font);
}

.author-works ol li a {
    color: var(--text-color);
    font-size: 15px;
}

.author-works ol li a:hover {
    color: var(--accent-deep);
}

/* ---------- 侧边栏公共模块（诗人推荐） ---------- */
.poem-classification {
    background: var(--card-bg);
    border: 1px solid var(--border-strong);
    border-radius: 8px;
    padding: 20px 18px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-soft);
}

.poem-classification h2 {
    font-family: var(--serif-font);
    font-size: 20px;
    font-weight: 600;
    color: var(--heading-color);
    letter-spacing: 1px;
    padding-bottom: 12px;
    margin-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.poem-classification .tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.poem-classification .tags a {
    display: inline-block;
    padding: 4px 12px;
    background: var(--bg-color);
    border: 1px solid var(--border-strong);
    border-radius: 4px;
    font-size: 14px;
    color: var(--text-color);
}

.poem-classification .tags a:hover {
    color: var(--accent-deep);
    background: var(--accent-soft);
    border-color: var(--accent-color);
    text-decoration: none;
}

/* ---------- 底部 ---------- */
.footer {
    margin-top: 12px;
    border-top: 1px solid var(--border-strong);
    background: var(--card-bg);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 16px;
    text-align: center;
    font-size: 14px;
    line-height: 2.1;
}

.footer-content a {
    color: var(--text-color);
    margin: 0 5px;
}

.footer-content a:hover {
    color: var(--accent-deep);
}

.footer-content .disclaimer {
    color: var(--text-muted);
    font-size: 13px;
    max-width: 900px;
    margin: 6px auto 0;
}

/* ---------- 分页（列表页公共，原生 a 标签） ---------- */
.pagination {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 30px;
}

.pagination a,
.pagination span {
    display: inline-block;
    min-width: 40px;
    padding: 6px 12px;
    text-align: center;
    font-size: 15px;
    color: var(--text-secondary);
    background: var(--card-bg);
    border: 1px solid var(--border-strong);
    border-radius: 4px;
}

.pagination a:hover {
    color: var(--accent-deep);
    background: var(--accent-soft);
    border-color: var(--accent-color);
    text-decoration: none;
}

.pagination .is-active {
    color: var(--color-cream);
    background: var(--accent-color);
    border-color: var(--accent-color);
}

.pagination .is-disabled {
    color: var(--text-muted);
    background: transparent;
    border-color: var(--border-color);
}

.pagination .page-dots {
    min-width: 16px;
    padding: 6px 2px;
    background: none;
    border: 0;
}

/* ---------- 移动端导航（默认隐藏，点按钮展开） ---------- */
.header-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    width: 40px;
    height: 34px;
    padding: 0 9px;
    background: var(--card-bg);
    border: 1px solid var(--border-strong);
    border-radius: 4px;
    cursor: pointer;
}

.header-toggle span {
    display: block;
    height: 2px;
    background: var(--heading-color);
    border-radius: 1px;
}

.m-nav-mask {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: rgba(38, 35, 28, .5);
    z-index: 900;
    opacity: 0;
    visibility: hidden;
    /* 关闭时先淡出，再隐藏 */
    transition: opacity .26s ease, visibility 0s linear .26s;
}

.m-nav-mask.is-show {
    opacity: 1;
    visibility: visible;
    transition: opacity .3s ease, visibility 0s linear 0s;
}

.m-nav-panel {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    right: 0;
    z-index: 901;
    width: 86%;
    max-width: 380px;
    height: 100%;
    background: var(--card-bg);
    box-shadow: -4px 0 18px rgba(38, 35, 28, .16);
    transform: translate3d(102%, 0, 0);
    /* 关闭：稍快、线性收尾，干脆不拖沓 */
    transition: transform .3s cubic-bezier(.36, .07, .19, .97);
    will-change: transform;
    overflow-y: auto;
}

.m-nav-panel.is-open {
    transform: translate3d(0, 0, 0);
    /* 打开：稍慢、缓出，末端减速更柔和 */
    transition-duration: .42s;
    transition-timing-function: cubic-bezier(.22, 1, .36, 1);
}

/* 面板内容依次浮现，避免整体一起“跳”出来 */
.m-nav-group,
.m-nav-foot button {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity .24s ease, transform .24s ease;
}

.m-nav-panel.is-open .m-nav-group,
.m-nav-panel.is-open .m-nav-foot button {
    opacity: 1;
    transform: translateY(0);
}

.m-nav-panel.is-open .m-nav-group:nth-child(1) {
    transition-delay: .1s;
}

.m-nav-panel.is-open .m-nav-group:nth-child(2) {
    transition-delay: .16s;
}

.m-nav-panel.is-open .m-nav-group:nth-child(3) {
    transition-delay: .22s;
}

.m-nav-panel.is-open .m-nav-foot button {
    transition-delay: .28s;
}

.m-nav-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-color);
}

.m-nav-head strong {
    font-family: var(--serif-font);
    font-size: 21px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--heading-color);
}

.m-nav-close-x {
    border: 0;
    padding: 0 4px;
    background: none;
    font-size: 24px;
    line-height: 1;
    color: var(--text-muted);
    cursor: pointer;
}

.m-nav-close-x:hover {
    color: var(--accent-deep);
}

.m-nav-body {
    padding: 18px;
}

.m-nav-group {
    margin-bottom: 22px;
}

.m-nav-group h3 {
    font-family: var(--serif-font);
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--heading-color);
    margin-bottom: 14px;
}

.m-nav-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.m-nav-grid a {
    display: block;
    padding: 13px 8px;
    text-align: center;
    font-size: 16px;
    font-weight: 600;
    color: var(--color-cream);
    border-radius: 5px;
}

.m-nav-grid a:hover {
    opacity: .9;
    text-decoration: none;
}

.m-color-1 {
    background: var(--color-crimson);   /* 绛红 */
}

.m-color-2 {
    background: var(--color-ink-soft);  /* 墨褐 */
}

.m-color-3 {
    background: var(--color-beige);     /* 浅米棕 */
}

/* 浅底按钮用墨色文字，保证对比度 */
.m-nav-grid a.m-color-3 {
    color: var(--color-ink);
}

.m-nav-foot {
    margin-top: auto;
    padding: 0 18px 24px;
}

.m-nav-foot button {
    display: block;
    width: 100%;
    padding: 13px;
    background: var(--color-ink);
    border: 0;
    border-radius: 24px;
    color: var(--color-cream);
    font-family: var(--sans-font);
    font-size: 17px;
    font-weight: 600;
    letter-spacing: 2px;
    cursor: pointer;
}

body.m-nav-open {
    overflow: hidden;
}

/* ---------- 响应式：移动端 ---------- */
@media (max-width: 768px) {
    .main-nav {
        display: none;
    }

    /* 副标语：宽度够时与 logo 同行，不够时自动换到 logo 下方 */
    .header-brand {
        flex-wrap: wrap;
        gap: 2px 12px;
    }

    .site-slogan {
        font-size: 13px;
        letter-spacing: .5px;
        padding-left: 0;
        border-left: 0;
    }

    .header-toggle {
        display: flex;
    }

    .container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
    }

    .breadcrumb {
        font-size: 13px;
    }

    body {
        font-size: 16px;
    }

    .pagination {
        gap: 6px;
        margin-top: 22px;
    }

    .pagination a,
    .pagination span {
        min-width: 34px;
        padding: 5px 9px;
        font-size: 14px;
    }
}

/* 桌面端不显示移动端导航面板 */
@media (min-width: 769px) {
    .m-nav-panel,
    .m-nav-mask {
        display: none;
    }
}

/* 系统开启“减少动态效果”时取消过渡 */
@media (prefers-reduced-motion: reduce) {
    .m-nav-panel,
    .m-nav-mask,
    .m-nav-group,
    .m-nav-foot button {
        transition: none;
    }
}