/*
Theme Name: 风禾永进
Theme URI: https://yongjin.tech
Author: 风禾永进团队
Author URI: https://yongjin.tech
Description: 风禾永进 - 中国风×AI科技博客WordPress主题。金玉风韵与数字星辰的融合，观潮·刻度·问道·见己四栏架构。支持日间/夜间双主题切换，中文字体优化，国内社交图标集成。
Version: 2.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: fenghe-yongjin
Tags: blog, technology, ai, dark-mode, chinese-style, custom-menu, featured-images, threaded-comments, translation-ready
*/

/* ============================================
   CSS 变量体系 - 日间模式「宣纸墨韵」
   灵感：墨蓝为骨，泼墨为魂，鎏金为饰，宣纸为底
   ============================================ */
:root,
[data-theme="light"] {
    /* 主色系 —— 中国传统色 */
    --color-primary: #1B3A5C;          /* 墨蓝 - 深邃沉稳 */
    --color-primary-hover: #14304D;
    --color-primary-light: rgba(27, 58, 92, 0.08);
    --color-secondary: #3B6894;        /* 靛蓝 - 沉静内敛（降绿向蓝偏移） */
    --color-secondary-hover: #2E5680;
    --color-accent: #2D8B6F;           /* 翠玉青 - 金玉满堂之笔 */
    --color-accent-hover: #247A5F;
    --color-gold: #C5993E;             /* 鎏金 - 华贵装饰 */
    --color-gold-light: rgba(197, 153, 62, 0.15);

    /* 四栏目主题色 */
    --color-guanchao: #1B3A5C;         /* 观潮 - 墨蓝 */
    --color-kedu: #B8860B;             /* 刻度 - 琥珀金 */
    --color-wendao: #6B4C8A;           /* 问道 - 紫墨 */
    --color-jianji: #C5622E;           /* 见己 - 暖橙 */

    /* 背景色 */
    --bg-body: #F5F0E8;                /* 宣纸色 */
    --bg-card: #FFFEF9;                /* 温润白 */
    --bg-card-hover: #F8F4EC;
    --bg-topbar: #1A1A2E;              /* 墨色 */
    --bg-nav: rgba(255, 254, 249, 0.95);
    --bg-footer: #1A1A2E;
    --bg-sidebar-widget: #FFFEF9;
    --bg-hero: linear-gradient(135deg, #1B3A5C 0%, #3B6894 35%, #1B3A5C 65%, #0D1F33 100%);
    --bg-input: #F0EBE3;
    --bg-overlay: rgba(26, 26, 46, 0.6);

    /* 文字色 */
    --text-primary: #1A1A2E;           /* 墨色 */
    --text-secondary: #5A5A6E;
    --text-tertiary: #8A8A9E;
    --text-inverse: #FFFEF9;
    --text-link: #3B6894;
    --text-link-hover: #1B3A5C;

    /* 边框 —— 水墨晕染感 */
    --border-color: #D8D0C4;
    --border-color-light: #E8E2D8;
    --border-color-dark: #C0B8AC;

    /* 阴影 —— 纸张叠层感 */
    --shadow-sm: 0 1px 3px rgba(26, 26, 46, 0.06);
    --shadow-md: 0 4px 8px rgba(26, 26, 46, 0.08), 0 1px 3px rgba(26, 26, 46, 0.04);
    --shadow-lg: 0 8px 24px rgba(26, 26, 46, 0.1), 0 2px 8px rgba(26, 26, 46, 0.05);
    --shadow-xl: 0 16px 48px rgba(26, 26, 46, 0.12), 0 4px 16px rgba(26, 26, 46, 0.06);

    /* 圆角 —— 略带方正，有古韵 */
    --radius-sm: 3px;
    --radius-md: 6px;
    --radius-lg: 10px;
    --radius-xl: 14px;
    --radius-full: 9999px;

    /* 间距 */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;

    /* 容器 */
    --container-max: 1200px;
    --container-padding: 20px;
    --content-width: 70%;
    --sidebar-width: 30%;
    --content-gap: 32px;

    /* 字体 */
    --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Noto Sans SC", sans-serif;
    --font-heading: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
    --font-mono: "JetBrains Mono", "Fira Code", "Source Code Pro", "Noto Sans Mono CJK SC", monospace;
    --font-serif: "Noto Serif SC", "Source Han Serif SC", "SimSun", "STSong", serif;

    /* 字号 */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;

    /* 行高 */
    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.6;
    --leading-relaxed: 1.75;

    /* 动画 */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;

    /* 导航高度 */
    --nav-height: 64px;
    --font-literary: var(--font-body), 'Ma Shan Zheng', 'Noto Serif SC', 'Source Han Serif SC', 'STKaiti', 'KaiTi', serif;
}

/* ============================================
   夜间模式「玄夜星辰」
   灵感：星紫为光，幽蓝为海，碧荧为焰，月金为引
   ============================================ */
[data-theme="dark"] {
    --color-primary: #7B6CB7;          /* 星紫 */
    --color-primary-hover: #6B5CA7;
    --color-primary-light: rgba(123, 108, 183, 0.12);
    --color-secondary: #5A8ABF;        /* 幽蓝（降绿向蓝偏移） */
    --color-secondary-hover: #3A6FA5;
    --color-accent: #3DAF8F;           /* 碧荧 */
    --color-accent-hover: #2D9F7F;
    --color-gold: #D4A843;             /* 月金 */
    --color-gold-light: rgba(212, 168, 67, 0.12);

    --color-guanchao: #7B6CB7;
    --color-kedu: #D4A843;
    --color-wendao: #9B7EC8;
    --color-jianji: #E8945A;           /* 暖橙(夜) */

    --bg-body: #0D0D1A;                /* 玄色 */
    --bg-card: #1A1A2E;                /* 墨蓝 */
    --bg-card-hover: #222240;
    --bg-topbar: #08080F;
    --bg-nav: rgba(26, 26, 46, 0.95);
    --bg-footer: #08080F;
    --bg-sidebar-widget: #1A1A2E;
    --bg-hero: linear-gradient(135deg, #0D0D1A 0%, #1A1A2E 25%, #2A1A3E 50%, #1A1A2E 75%, #0D0D1A 100%);
    --bg-input: #252545;
    --bg-overlay: rgba(13, 13, 26, 0.8);

    --text-primary: #E0DDE8;
    --text-secondary: #9A96A8;
    --text-tertiary: #6A6678;
    --text-inverse: #0D0D1A;
    --text-link: #8B9FD4;
    --text-link-hover: #5A8ABF;

    --border-color: #2E2E4A;
    --border-color-light: #1E1E38;
    --border-color-dark: #3E3E5A;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4), 0 1px 3px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5), 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6), 0 4px 16px rgba(0, 0, 0, 0.4);
}

/* ============================================
   重置与基础
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--text-primary);
    background-color: var(--bg-body);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    transition: background-color var(--transition-base), color var(--transition-base);
}

/* 全局水印纹背景 —— 宣纸纹理 + 隐约山水 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(circle at 20% 50%, rgba(197, 153, 62, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(45, 139, 111, 0.02) 0%, transparent 40%),
        radial-gradient(circle at 50% 80%, rgba(27, 58, 92, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 10% 10%, rgba(59, 104, 148, 0.02) 0%, transparent 30%),
        radial-gradient(circle at 90% 90%, rgba(107, 76, 138, 0.02) 0%, transparent 30%);
    pointer-events: none;
    z-index: 0;
}

/* 夜间模式全局光效 —— 星辰散点 + 紫蓝星云 */
[data-theme="dark"] body::before {
    background-image:
        radial-gradient(circle at 20% 50%, rgba(123, 108, 183, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(212, 168, 67, 0.04) 0%, transparent 40%),
        radial-gradient(circle at 50% 80%, rgba(90, 138, 191, 0.04) 0%, transparent 50%),
        radial-gradient(circle at 10% 90%, rgba(155, 126, 200, 0.03) 0%, transparent 35%),
        radial-gradient(circle at 70% 60%, rgba(61, 175, 143, 0.02) 0%, transparent 30%);
}

a {
    color: var(--text-link);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--text-link-hover);
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul, ol {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
    font-size: inherit;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: 0.04em;
    line-height: var(--leading-tight);
    color: var(--text-primary);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p {
    margin-bottom: var(--space-md);
    line-height: var(--leading-relaxed);
}

/* ============================================
   布局
   ============================================ */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    position: relative;
    z-index: 1;
}

.main-layout {
    display: flex;
    gap: var(--content-gap);
    padding: var(--space-xl) 0;
}

.main-content {
    flex: 0 0 var(--content-width);
    max-width: var(--content-width);
    min-width: 0;
}

.main-sidebar {
    flex: 0 0 var(--sidebar-width);
    max-width: var(--sidebar-width);
}

/* ============================================
   顶部栏
   ============================================ */
/* ============================================
   头部 —— 一体化布局
   LOGO(禾苗印章) + 站点标题 + Slogan(文艺字) + 社交链接
   ============================================ */
.site-header {
    background: var(--bg-card);
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--border-color);
    position: relative;
    transition: background-color var(--transition-base);
}

/* 头部底边云纹装饰 */
.site-header::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    right: 0;
    height: 12px;
    background: repeating-linear-gradient(
        90deg,
        transparent 0,
        transparent 8px,
        var(--border-color) 8px,
        var(--border-color) 10px,
        transparent 10px,
        transparent 18px
    );
    opacity: 0.4;
}

/* 头部一行布局 */
.header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
}

/* 左侧：LOGO + 站点标题 */
.header-left {
    flex-shrink: 0;
}

.header-logo-link {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    text-decoration: none;
}

.logo-seal {
    flex-shrink: 0;
    filter: drop-shadow(0 2px 6px rgba(0,0,0,0.15));
}

.header-brand {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.header-site-title {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.08em;
    line-height: 1.2;
}

.header-site-desc {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    letter-spacing: 0.15em;
    font-family: var(--font-serif);
    white-space: nowrap;
}

/* 中间：循环Slogan（文艺字体） */
.header-slogan-area {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
    overflow: hidden;
}

.header-slogan-wrapper {
    position: relative;
    height: 2em;
    line-height: 2em;
    text-align: center;
    width: 100%;
}

.header-slogan {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    margin: 0;
    font-family: var(--font-body), 'Ma Shan Zheng', var(--font-serif);
    font-size: 1.15rem;
    color: var(--text-primary);
    letter-spacing: 0.12em;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.header-slogan.active {
    opacity: 1;
}

/* 日间模式 Slogan 颜色 —— 墨色 */
[data-theme="light"] .header-slogan {
    color: #2D2D3A;
}

/* 夜间模式 Slogan 颜色 —— 白色 */
[data-theme="dark"] .header-slogan {
    color: #F0EEF5;
}

/* 右上角：日期 + 媒体链接（小行排列，不占slogan空间） */
.header-corner {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-date {
    font-size: 0.7rem;
    color: var(--text-tertiary);
    letter-spacing: 0.03em;
    white-space: nowrap;
}

/* Header 社交图标 */
.header-social {
    display: flex;
    gap: 6px;
    align-items: center;
}

.header-social a {
    color: var(--text-secondary);
    opacity: 0.55;
    transition: opacity var(--transition-fast), transform var(--transition-fast), color var(--transition-fast);
    display: flex;
    align-items: center;
}

.header-social a:hover {
    opacity: 1;
    transform: translateY(-1px);
    text-decoration: none;
    color: var(--color-accent);
}

.header-social svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

/* Custom Logo fallback */
.site-logo {
    display: inline-block;
}

.site-logo img {
    height: 56px;
    width: auto;
}

/* ============================================
   导航栏 —— 古典框架+数字底座
   ============================================ */
.main-nav {
    background: var(--bg-nav);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: background-color var(--transition-base), box-shadow var(--transition-base);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

/* 导航底边鎏金线 —— 滚动后显示 */
.main-nav.scrolled {
    box-shadow: var(--shadow-md);
}

.main-nav.scrolled::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent 5%, var(--color-gold) 30%, var(--color-accent) 50%, var(--color-gold) 70%, transparent 95%);
    opacity: 0.5;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--nav-height);
}

.nav-menu {
    display: flex;
    gap: 0;
    align-items: center;
}

.nav-menu li {
    position: relative;
}

/* 导航链接 —— 竖线分隔的古韵感 */
.nav-menu > li > a {
    display: flex;
    align-items: center;
    padding: 0 var(--space-lg);
    height: var(--nav-height);
    color: var(--text-primary);
    font-weight: 500;
    font-size: var(--text-sm);
    letter-spacing: 0.08em;
    transition: color var(--transition-fast), background-color var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
    position: relative;
}

/* 导航项之间的竖线分隔 */
.nav-menu > li + li > a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 20px;
    background: var(--border-color);
}

.nav-menu > li > a:hover,
.nav-menu > li.current-menu-item > a,
.nav-menu > li.current-menu-ancestor > a {
    color: var(--color-accent);
    background-color: var(--color-primary-light);
    text-decoration: none;
}

/* 当前项底部翠玉标记 */
.nav-menu > li.current-menu-item > a::after,
.nav-menu > li.current-menu-ancestor > a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 3px;
    background: var(--color-accent);
    border-radius: 2px;
}

/* 四栏目图标色标识 */
.nav-menu > li.nav-guanchao > a:hover,
.nav-menu > li.nav-guanchao.current-menu-item > a { color: var(--color-guanchao); }
.nav-menu > li.nav-kedu > a:hover,
.nav-menu > li.nav-kedu.current-menu-item > a { color: var(--color-kedu); }
.nav-menu > li.nav-wendao > a:hover,
.nav-menu > li.nav-wendao.current-menu-item > a { color: var(--color-wendao); }
.nav-menu > li.nav-jianji > a:hover,
.nav-menu > li.nav-jianji.current-menu-item > a { color: var(--color-jianji); }

/* 下拉菜单 */
.nav-menu .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all var(--transition-fast);
    z-index: 100;
}

.nav-menu li:hover > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.sub-menu a {
    display: block;
    padding: var(--space-sm) var(--space-md);
    color: var(--text-primary);
    font-size: var(--text-sm);
    transition: background-color var(--transition-fast);
    text-decoration: none;
}

.sub-menu a:hover {
    background-color: var(--bg-card-hover);
    color: var(--color-primary);
    text-decoration: none;
}

/* 导航右侧工具 */
.nav-tools {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.nav-search-btn,
.nav-theme-toggle,
.nav-mobile-toggle {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.nav-search-btn:hover,
.nav-theme-toggle:hover,
.nav-mobile-toggle:hover {
    background: var(--bg-card-hover);
    color: var(--color-primary);
}

.nav-search-btn svg,
.nav-theme-toggle svg,
.nav-mobile-toggle svg {
    width: 20px;
    height: 20px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* 主题切换按钮 */
.theme-toggle-icon-dark { display: none; }
.theme-toggle-icon-light { display: block; }
[data-theme="dark"] .theme-toggle-icon-dark { display: block; }
[data-theme="dark"] .theme-toggle-icon-light { display: none; }

/* 搜索表单 */
.nav-search-form {
    position: absolute;
    top: 100%;
    right: 0;
    width: 320px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all var(--transition-fast);
    z-index: 100;
}

.nav-search-form.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-search-form input[type="search"] {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-input);
    color: var(--text-primary);
    outline: none;
    transition: border-color var(--transition-fast);
}

.nav-search-form input[type="search"]:focus {
    border-color: var(--color-primary);
}

.nav-mobile-toggle {
    display: none;
}

/* ============================================
   面包屑
   ============================================ */
.breadcrumb {
    padding: var(--space-md) 0;
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

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

.breadcrumb a:hover {
    color: var(--color-primary);
    text-decoration: none;
}

.breadcrumb-sep {
    margin: 0 var(--space-xs);
    opacity: 0.5;
}

/* ============================================
   英雄区域 —— 水墨画卷
   ============================================ */
.hero-section {
    background: var(--bg-hero);
    color: var(--text-inverse);
    padding: var(--space-3xl) 0;
    position: relative;
    overflow: hidden;
}

/* 数字网格底纹 */
.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.04)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    background-size: 100px 100px;
    pointer-events: none;
}

/* 山水云雾装饰 —— 左侧 */
.hero-section::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: -5%;
    right: -5%;
    height: 80px;
    background: linear-gradient(to top, var(--bg-body) 0%, transparent 100%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

/* 栏目页hero横向布局：左标题+右slogan */
.hero-content-row {
    display: flex;
    align-items: center;
    gap: var(--space-2xl);
}

.hero-content-left {
    flex-shrink: 0;
}

.hero-content-row .hero-title {
    margin-bottom: 8px;
}

.hero-content-row .hero-subtitle {
    margin-bottom: 0;
}

.hero-content-row .hero-slogan-wrapper {
    position: relative;
    height: 48px;
    overflow: hidden;
    flex: 1;
    min-width: 0;
    border-left: 2px solid rgba(255, 255, 255, 0.15);
    padding-left: var(--space-xl);
}

.hero-content-row .hero-slogan {
    position: absolute;
    top: 0;
    left: 20px;
    right: 0;
    font-size: var(--text-lg);
    font-family: var(--font-literary);
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.8s ease, transform 0.8s ease;
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    letter-spacing: 0.15em;
    line-height: 48px;
    font-weight: 400;
}

[data-theme="light"] .hero-content-row .hero-slogan {
    color: rgba(255, 254, 249, 0.88);
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .hero-content-row .hero-slogan {
    color: rgba(200, 195, 215, 0.92);
    text-shadow: 0 0 20px rgba(123, 108, 183, 0.3);
}

.hero-content-row .hero-slogan.active {
    opacity: 1;
    transform: translateY(0);
}

/* 推荐文章网格 */
.hero-featured-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    gap: var(--space-md);
}

.hero-featured-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    text-decoration: none;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hero-featured-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

/* 主推文章（第一篇，占左侧整列） */
.hero-featured-main {
    grid-row: 1 / 3;
    min-height: 340px;
}

/* 次推文章（右上2+右下2） */
.hero-featured-sub {
    min-height: 160px;
}

.hero-featured-thumb {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}

.hero-featured-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-featured-item .post-card-thumb-fallback {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.hero-featured-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-lg);
    background: linear-gradient(to top, rgba(0,0,0,0.75) 0%, rgba(0,0,0,0.3) 60%, transparent 100%);
    z-index: 2;
}

.hero-featured-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    color: #fff;
    background: var(--badge-color, var(--color-primary));
    margin-bottom: var(--space-xs);
    letter-spacing: 0.05em;
}

.hero-featured-title {
    color: #fff;
    font-size: 1.1rem;
    font-weight: 600;
    line-height: 1.4;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.hero-featured-main .hero-featured-title {
    font-size: 1.5rem;
    -webkit-line-clamp: 3;
}

.hero-featured-excerpt {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--text-sm);
    line-height: 1.6;
    margin-top: var(--space-xs);
    margin-bottom: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ============================================
   四栏目入口区
   ============================================ */
.section-nav {
    padding: var(--space-2xl) 0;
    background: var(--bg-body);
    position: relative;
}

.section-nav-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.section-nav-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    text-decoration: none;
    display: block;
}

/* 每个栏目的顶部色带 */
.section-nav-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.section-nav-item.nav-guanchao::before { background: var(--color-guanchao); }
.section-nav-item.nav-kedu::before { background: var(--color-kedu); }
.section-nav-item.nav-wendao::before { background: var(--color-wendao); }
.section-nav-item.nav-jianji::before { background: var(--color-jianji); }

.section-nav-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    text-decoration: none;
    border-color: transparent;
}

.section-nav-item.nav-guanchao:hover { border-color: var(--color-guanchao); }
.section-nav-item.nav-kedu:hover { border-color: var(--color-kedu); }
.section-nav-item.nav-wendao:hover { border-color: var(--color-wendao); }
.section-nav-item.nav-jianji:hover { border-color: var(--color-jianji); }

.section-nav-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 24px;
    transition: transform var(--transition-base);
}

.section-nav-item:hover .section-nav-icon {
    transform: scale(1.1);
}

.section-nav-item.nav-guanchao .section-nav-icon { background: rgba(27, 58, 92, 0.1); color: var(--color-guanchao); }
.section-nav-item.nav-kedu .section-nav-icon { background: rgba(184, 134, 11, 0.1); color: var(--color-kedu); }
.section-nav-item.nav-wendao .section-nav-icon { background: rgba(107, 76, 138, 0.1); color: var(--color-wendao); }
.section-nav-item.nav-jianji .section-nav-icon { background: rgba(197, 98, 46, 0.1); color: var(--color-jianji); }

[data-theme="dark"] .section-nav-item.nav-guanchao .section-nav-icon { background: rgba(123, 108, 183, 0.15); color: var(--color-guanchao); }
[data-theme="dark"] .section-nav-item.nav-kedu .section-nav-icon { background: rgba(212, 168, 67, 0.15); color: var(--color-kedu); }
[data-theme="dark"] .section-nav-item.nav-wendao .section-nav-icon { background: rgba(155, 126, 200, 0.15); color: var(--color-wendao); }
[data-theme="dark"] .section-nav-item.nav-jianji .section-nav-icon { background: rgba(232, 148, 90, 0.15); color: var(--color-jianji); }

.section-nav-name {
    font-size: var(--text-2xl);
    font-weight: 700;
    letter-spacing: 0.15em;
    margin-bottom: var(--space-xs);
    transition: color var(--transition-fast);
}

.section-nav-item.nav-guanchao .section-nav-name { color: var(--color-guanchao); }
.section-nav-item.nav-kedu .section-nav-name { color: var(--color-kedu); }
.section-nav-item.nav-wendao .section-nav-name { color: var(--color-wendao); }
.section-nav-item.nav-jianji .section-nav-name { color: var(--color-jianji); }

.section-nav-desc {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    font-family: var(--font-serif);
    letter-spacing: 0.05em;
}

.section-nav-item:hover .section-nav-name {
    letter-spacing: 0.2em;
}

/* ============================================
   滚动新闻走马灯
   ============================================ */
.news-ticker-bar {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: 8px 0;
    overflow: hidden;
    transition: background-color var(--transition-base);
}

.news-ticker-inner {
    display: flex;
    align-items: center;
    gap: 12px;
}

.news-ticker-label {
    flex-shrink: 0;
    padding: 2px 10px;
    background: var(--color-primary);
    color: var(--text-inverse);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.1em;
    border-radius: var(--radius-sm);
}

.news-ticker-track {
    flex: 1;
    overflow: hidden;
    position: relative;
    height: 28px;
}

.news-ticker-item {
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    text-decoration: none;
    color: var(--text-secondary);
    font-size: var(--text-sm);
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    transform: translateX(100%);
    opacity: 0;
    transition: transform 1s ease, opacity 0.6s ease;
    line-height: 28px;
}

.news-ticker-item.active {
    transform: translateX(0);
    opacity: 1;
}

.news-ticker-item.exit-left {
    transform: translateX(-100%);
    opacity: 0;
}

.news-ticker-item:hover {
    color: var(--color-primary);
    text-decoration: none;
}

.news-ticker-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
}

.news-ticker-title {
    font-family: var(--font-body);
}

[data-theme="dark"] .news-ticker-bar {
    background: #13132A;
    border-bottom-color: rgba(123, 108, 183, 0.15);
}

[data-theme="dark"] .news-ticker-label {
    background: var(--color-accent);
}

[data-theme="dark"] .news-ticker-item {
    color: #B0ADD5;
}

[data-theme="dark"] .news-ticker-item:hover {
    color: var(--color-accent);
}

/* ============================================
   文章卡片 —— 卷轴展开
   ============================================ */
.post-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    margin-bottom: var(--space-lg);
    border: 1px solid var(--border-color-light);
    position: relative;
}

/* 卡片左侧色带 —— 默认主题色 */
.post-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--color-primary);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

/* 卡片右上角水墨晕染装饰 —— 仅在hover显示 */
.post-card::after {
    content: '';
    position: absolute;
    top: -20px;
    right: -20px;
    width: 80px;
    height: 80px;
    background: radial-gradient(circle, var(--color-gold-light) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.post-card:hover::before {
    opacity: 1;
}

.post-card:hover::after {
    opacity: 1;
}

.post-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.post-card-thumb {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 9;
}

.post-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.post-card:hover .post-card-thumb img {
    transform: scale(1.05);
}

.post-card-thumb .post-categories {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    display: flex;
    gap: var(--space-xs);
    flex-wrap: wrap;
}

/* ============================================
   栏目标签徽章 —— 醒目栏目标识
   ============================================ */
.column-badge {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 14px;
    background: var(--badge-color, var(--color-primary));
    color: #FFFEF9;
    border-radius: 3px;
    font-size: var(--text-xs);
    font-weight: 700;
    letter-spacing: 0.12em;
    text-decoration: none;
    z-index: 2;
    box-shadow: 0 2px 8px rgba(0,0,0,0.18);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    line-height: 1.4;
}

.column-badge:hover {
    transform: translateY(-1px);
    box-shadow: 0 3px 12px rgba(0,0,0,0.25);
}

/* 夜间模式栏目标签 —— 更亮的底色 */
[data-theme="dark"] .column-badge {
    box-shadow: 0 2px 10px rgba(0,0,0,0.4);
}

/* 缺省占位图 —— 中国风水墨意境 */
.post-card-thumb-fallback {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 9;
    display: flex;
    align-items: center;
    justify-content: center;
}

.fallback-thumb-link {
    position: relative;
    width: 100%;
    height: 100%;
}

.fallback-char {
    font-family: var(--font-serif);
    font-size: 5rem;
    line-height: 1;
    color: rgba(255, 255, 255, 0.18);
    pointer-events: none;
    user-select: none;
    text-shadow: 0 2px 20px rgba(0,0,0,0.1);
}

/* 缺省占位图上的装饰纹理 —— 水墨晕染 */
.post-card-thumb-fallback::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 40%;
    background: linear-gradient(to top, rgba(0,0,0,0.08) 0%, transparent 100%);
    pointer-events: none;
}

.post-card-body {
    padding: var(--space-lg);
}

.post-categories {
    display: flex;
    gap: var(--space-xs);
    flex-wrap: wrap;
    margin-bottom: var(--space-sm);
}

.post-categories a {
    display: inline-block;
    padding: 2px var(--space-sm);
    background: var(--color-primary);
    color: var(--text-inverse);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    font-weight: 500;
    text-decoration: none;
    transition: background-color var(--transition-fast);
    letter-spacing: 0.05em;
}

.post-categories a:hover {
    background: var(--color-primary-hover);
    text-decoration: none;
    color: var(--text-inverse);
}

.post-card-title {
    font-size: var(--text-xl);
    margin-bottom: var(--space-sm);
    line-height: var(--leading-snug);
    letter-spacing: 0.02em;
}

.post-card-title a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.post-card-title a:hover {
    color: var(--color-primary);
    text-decoration: none;
}

.post-card-excerpt {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-md);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-card-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-color-light);
}

.post-card-meta .meta-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.post-card-meta svg {
    width: 14px;
    height: 14px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
}

.post-author-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    object-fit: cover;
}

/* ============================================
   侧边栏 —— 书卷侧栏
   ============================================ */
.sidebar-widget {
    background: var(--bg-sidebar-widget);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    border: 1px solid var(--border-color-light);
    transition: background-color var(--transition-base);
    position: relative;
}

.widget-title {
    font-size: var(--text-lg);
    font-weight: 700;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    padding-left: 14px;
    display: inline-block;
    position: relative;
    letter-spacing: 0.08em;
}

/* 标题左侧竖线 —— 翠玉色标记 */
.widget-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 2px;
    bottom: 2px;
    width: 3px;
    background: var(--color-accent);
    border-radius: 2px;
}

/* 标题底部鎏金渐变装饰 */
.widget-title::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-gold), transparent);
    border-radius: 1px;
}

/* widget-title 居左变体 */
.widget-title-left {
    display: block;
    text-align: left;
}

/* 作者卡片 —— 印章式 */
.author-card-widget {
    text-align: center;
}

.author-card-avatar {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto var(--space-md);
    border: 3px solid transparent;
    background: linear-gradient(var(--bg-card), var(--bg-card)) padding-box,
                linear-gradient(135deg, var(--color-secondary), var(--color-gold)) border-box;
    box-shadow: 0 0 0 4px var(--color-gold-light);
}

[data-theme="dark"] .author-card-avatar {
    border: 3px solid transparent;
    background: linear-gradient(var(--bg-card), var(--bg-card)) padding-box,
                linear-gradient(135deg, #7B6CB7, #D4A843) border-box;
    box-shadow: 0 0 0 4px rgba(123, 108, 183, 0.12);
}

.author-card-name {
    font-size: var(--text-lg);
    font-weight: 700;
    margin-bottom: var(--space-xs);
    letter-spacing: 0.1em;
}

.author-card-bio {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    margin-bottom: var(--space-md);
    line-height: var(--leading-relaxed);
    font-family: var(--font-serif);
}

.author-card-social {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.author-card-social a {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--bg-input);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.author-card-social a:hover {
    background: var(--color-primary);
    color: var(--text-inverse);
    transform: translateY(-2px);
}

.author-card-social svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

/* 热门文章 */
.popular-posts-list {
    counter-reset: popular-counter;
}

.popular-post-item {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--border-color-light);
    counter-increment: popular-counter;
}

.popular-post-item:last-child {
    border-bottom: none;
}

.popular-post-number {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: var(--text-inverse);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    font-weight: 700;
    font-family: var(--font-serif);
}

/* 前三名特殊色 —— 翠玉/鎏金/靛蓝 */
.popular-post-item:first-child .popular-post-number {
    background: var(--color-accent);
}

.popular-post-item:nth-child(2) .popular-post-number {
    background: var(--color-gold);
}

.popular-post-item:nth-child(3) .popular-post-number {
    background: var(--color-secondary);
}

.popular-post-title {
    font-size: var(--text-sm);
    font-weight: 500;
    line-height: var(--leading-snug);
}

.popular-post-title a {
    color: var(--text-primary);
    text-decoration: none;
}

.popular-post-title a:hover {
    color: var(--color-primary);
}

.popular-post-date {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    margin-top: var(--space-xs);
}

/* 分类目录 */
.category-list li {
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--border-color-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.category-list li:last-child {
    border-bottom: none;
}

.category-list a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.category-list a:hover {
    color: var(--color-primary);
}

.category-count {
    background: var(--bg-input);
    color: var(--text-secondary);
    padding: 2px var(--space-sm);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
}

/* 标签云 */
.tagcloud {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.tagcloud a {
    display: inline-block;
    padding: 2px var(--space-sm);
    background: var(--bg-input);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs) !important;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
    letter-spacing: 0.03em;
}

.tagcloud a:hover {
    background: var(--color-primary);
    color: var(--text-inverse);
    text-decoration: none;
}

/* 侧栏站点推荐 */
.sidebar-recommend-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.sidebar-recommend-item {
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-color-light);
}

.sidebar-recommend-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.sidebar-recommend-thumb {
    flex-shrink: 0;
    width: 80px;
    height: 56px;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.sidebar-recommend-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-fast);
}

/* 侧栏推荐缺省缩略图 */
.sidebar-recommend-thumb-fallback {
    background: var(--bg-input);
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-fallback-char {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    font-size: 1.5rem;
    font-family: var(--font-serif);
    letter-spacing: 0.05em;
    border-radius: var(--radius-sm);
}

/* 底栏推荐缺省缩略图 */
.bottom-recommend-thumb {
    display: block;
    overflow: hidden;
}

.bottom-recommend-thumb img {
    width: 100%;
    aspect-ratio: 16/10;
    object-fit: cover;
    transition: transform var(--transition-fast);
}

.bottom-recommend-thumb-fallback {
    display: flex;
    align-items: center;
    justify-content: center;
}

.bottom-fallback-char {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    aspect-ratio: 16/10;
    font-size: 2rem;
    font-family: var(--font-serif);
    letter-spacing: 0.05em;
    border-radius: 0;
}

.sidebar-recommend-item:hover .sidebar-recommend-thumb img {
    transform: scale(1.05);
}

.sidebar-recommend-info {
    flex: 1;
    min-width: 0;
}

.sidebar-recommend-title {
    font-size: var(--text-sm);
    font-weight: 500;
    line-height: var(--leading-snug);
    margin-bottom: var(--space-xs);
}

.sidebar-recommend-title a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.sidebar-recommend-title a:hover {
    color: var(--color-primary);
}

.sidebar-recommend-date {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

[data-theme="dark"] .sidebar-recommend-title a {
    color: #E0DDE8;
}

[data-theme="dark"] .sidebar-recommend-title a:hover {
    color: #A5B8E8;
}

/* 见己页面侧栏 - 画境幻灯展示 */
.sidebar-jianji-widget {
    position: relative;
}

.jianji-slideshow {
    position: relative;
    width: 100%;
    aspect-ratio: 3 / 4;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-input);
}

.jianji-slide-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease;
    text-decoration: none;
}

.jianji-slide-item:first-child {
    opacity: 1;
}

.jianji-slide-thumb {
    width: 100%;
    height: 100%;
}

.jianji-slide-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.jianji-slide-thumb-fallback {
    display: flex;
    align-items: center;
    justify-content: center;
}

.jianji-slide-fallback-char {
    font-size: 4rem;
    font-family: var(--font-serif);
    color: rgba(255, 255, 255, 0.2);
}

/* 幻灯指示器 */
.jianji-slideshow::after {
    content: '';
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 6px;
    z-index: 2;
}

[data-theme="dark"] .jianji-slideshow {
    background: #13132A;
}

/* ============================================
   文章详情页 —— 典籍翻阅
   ============================================ */
.single-post-header {
    margin-bottom: var(--space-xl);
}

.single-post-title {
    font-size: 2.25rem;
    margin-bottom: var(--space-md);
    line-height: 1.3;
    letter-spacing: 0.02em;
    font-weight: 800;
}

.single-post-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    align-items: center;
    color: var(--text-secondary);
    font-size: var(--text-sm);
    margin-bottom: var(--space-lg);
}

.single-post-meta .meta-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.single-post-meta .meta-item svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.single-post-featured {
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: var(--space-xl);
}

.single-post-featured img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.single-post-content {
    font-size: 1.0625rem;
    line-height: 1.85;
    color: var(--text-primary);
    letter-spacing: 0.01em;
}

/* 内容区 h2 —— 卷首装饰 */
.single-post-content h2 {
    margin-top: 2.5em;
    margin-bottom: 1em;
    padding-bottom: 0.5em;
    padding-left: 16px;
    border-bottom: 1px solid var(--border-color);
    border-left: 4px solid var(--color-accent);
    font-size: 1.5rem;
    font-weight: 700;
}

.single-post-content h3 {
    margin-top: 2em;
    margin-bottom: 0.75em;
    padding-left: 14px;
    border-left: 3px solid var(--color-secondary);
    font-size: 1.25rem;
    font-weight: 600;
}

.single-post-content h4 {
    margin-top: 1.5em;
    margin-bottom: 0.5em;
    font-size: 1.1rem;
    font-weight: 600;
}

.single-post-content p {
    margin-bottom: 1.2em;
}

/* 引用块 —— 古文批注 */
.single-post-content blockquote {
    border-left: 4px solid var(--color-accent);
    padding: var(--space-md) var(--space-lg);
    margin: 2em 0;
    background: var(--bg-card-hover);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-style: italic;
    position: relative;
}

.single-post-content blockquote::before {
    content: '\201C';
    position: absolute;
    top: -4px;
    left: 12px;
    font-size: 3rem;
    color: var(--color-accent);
    opacity: 0.25;
    font-family: var(--font-serif);
    line-height: 1;
}

.single-post-content code {
    font-family: var(--font-mono);
    background: var(--bg-input);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 0.88em;
    color: var(--color-primary);
}

.single-post-content pre {
    background: #1a1b26;
    color: #a9b1d6;
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    overflow-x: auto;
    margin: 2em 0;
    line-height: var(--leading-normal);
    border: 1px solid var(--border-color);
    position: relative;
}

.single-post-content pre::before {
    content: '';
    position: absolute;
    top: 12px;
    left: 16px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #ff5f57;
    box-shadow: 20px 0 0 #febc2e, 40px 0 0 #28c840;
}

.single-post-content pre code {
    background: none;
    padding: 0;
    color: inherit;
    margin-top: 16px;
    display: block;
}

.single-post-content img {
    border-radius: var(--radius-md);
    margin: 2em auto;
    display: block;
    box-shadow: var(--shadow-sm);
}

.single-post-content ul,
.single-post-content ol {
    padding-left: 1.5em;
    margin-bottom: 1.2em;
}

.single-post-content ul {
    list-style: none;
    padding-left: 0;
}

/* 列表项墨点装饰 */
.single-post-content ul li {
    position: relative;
    padding-left: 1.5em;
    margin-bottom: 0.5em;
}

.single-post-content ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.6em;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-accent);
    opacity: 0.7;
}

.single-post-content ol {
    list-style: decimal;
    counter-reset: ol-counter;
}

.single-post-content ol li {
    margin-bottom: 0.5em;
}

.single-post-content li {
    margin-bottom: var(--space-xs);
}

.single-post-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 2em 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.single-post-content th,
.single-post-content td {
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    text-align: left;
}

.single-post-content th {
    background: var(--color-primary);
    color: var(--text-inverse);
    font-weight: 600;
}

.single-post-content tr:nth-child(even) td {
    background: var(--bg-card-hover);
}

/* 文章内容中的强调行 */
.single-post-content strong {
    font-weight: 700;
    color: var(--color-primary);
}

/* 文章内容中的链接样式 */
.single-post-content a {
    color: var(--text-link);
    text-decoration: underline;
    text-decoration-color: rgba(59, 104, 148, 0.3);
    text-underline-offset: 3px;
    transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}

.single-post-content a:hover {
    color: var(--text-link-hover);
    text-decoration-color: var(--text-link-hover);
}

/* 文章标签 */
.single-post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin: var(--space-xl) 0;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-color);
}

.single-post-tags .tag-label {
    font-weight: 600;
    color: var(--text-secondary);
    padding: 4px 0;
}

/* 文章标题下翠玉渐变装饰线 */
.single-post-header {
    margin-bottom: var(--space-xl);
    position: relative;
}

.single-post-header::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 0;
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-gold), transparent);
    border-radius: 2px;
}

/* 栏目标签内联模式 —— 用于文章详情页 */
.column-badge-inline {
    position: static;
    display: inline-flex;
    padding: 4px 14px;
    background: var(--badge-color, var(--color-primary));
    color: #FFFEF9;
    border-radius: 3px;
    font-size: var(--text-xs);
    font-weight: 700;
    letter-spacing: 0.12em;
    box-shadow: none;
}

/* 作者信息框 —— 印章式装饰 */
.post-author-box {
    display: flex;
    gap: var(--space-lg);
    padding: var(--space-lg);
    background: var(--bg-card-hover);
    border-radius: var(--radius-lg);
    margin: var(--space-xl) 0;
    border: 1px solid var(--border-color-light);
    position: relative;
}

/* 作者框右上角印章水印 */
.post-author-box::before {
    content: '印';
    position: absolute;
    top: 12px;
    right: 16px;
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--color-accent);
    opacity: 0.12;
    transform: rotate(-8deg);
    pointer-events: none;
}

/* 上下篇导航 —— 中国风化 */
.post-navigation {
    display: flex;
    justify-content: space-between;
    gap: var(--space-lg);
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--border-color);
    margin-top: var(--space-xl);
    position: relative;
}

/* 导航间分隔装饰 */
.post-navigation::after {
    content: '◈';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--color-gold);
    opacity: 0.3;
    font-size: var(--text-sm);
}

/* ============================================
   底部全宽区域
   ============================================ */
.bottom-fullwidth {
    background: var(--bg-card);
    border-top: 2px solid transparent;
    background-image: linear-gradient(var(--bg-card), var(--bg-card)),
                      linear-gradient(90deg, var(--color-accent), var(--color-gold), var(--color-secondary), var(--color-accent));
    background-origin: border-box;
    background-clip: padding-box, border-box;
    padding: var(--space-2xl) 0;
    transition: background-color var(--transition-base);
    position: relative;
}

/* 底栏装饰 —— 右下角水墨晕染 */
.bottom-fullwidth::after {
    content: '';
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, var(--color-gold-light) 0%, transparent 70%);
    pointer-events: none;
    opacity: 0.5;
}

.bottom-sections {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-xl);
}

.bottom-section-title {
    font-size: var(--text-lg);
    font-weight: 700;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-accent);
    display: inline-block;
    letter-spacing: 0.08em;
}

.bottom-links li {
    padding: var(--space-xs) 0;
}

.bottom-links a {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.bottom-links a:hover {
    color: var(--color-primary);
}

/* 站点推荐 */
.bottom-recommend-posts {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-md);
}

.bottom-recommend-post {
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-card-hover);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.bottom-recommend-post:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.bottom-recommend-post img {
    width: 100%;
    aspect-ratio: 16/10;
    object-fit: cover;
}

.bottom-recommend-post-info {
    padding: var(--space-sm) var(--space-md);
}

.bottom-recommend-post-title {
    font-size: var(--text-sm);
    font-weight: 500;
    line-height: var(--leading-snug);
}

.bottom-recommend-post-title a {
    color: var(--text-primary);
    text-decoration: none;
}

.bottom-recommend-post-title a:hover {
    color: var(--color-primary);
}

.bottom-recommend-post-date {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    margin-top: var(--space-xs);
}

/* ============================================
   页脚 —— 古卷底栏
   ============================================ */
.site-footer {
    background: var(--bg-footer);
    color: var(--text-inverse);
    padding: var(--space-xl) 0;
    text-align: center;
    transition: background-color var(--transition-base);
    position: relative;
}

/* 页脚顶边鎏金线 */
.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 5%, var(--color-gold) 50%, transparent 95%);
    opacity: 0.4;
}

.footer-logo {
    margin-bottom: var(--space-md);
}

.footer-logo img,
.footer-logo svg {
    height: 40px;
    width: auto;
}

.footer-social {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.footer-social a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-inverse);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--color-gold);
    color: var(--bg-footer);
    transform: translateY(-2px);
    text-decoration: none;
}

.footer-social svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

.footer-copyright {
    font-size: var(--text-xs);
    opacity: 0.5;
    letter-spacing: 0.05em;
}

.footer-copyright a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-copyright a:hover {
    color: var(--color-gold);
    text-decoration: underline;
}

/* ============================================
   回顶按钮 —— 印章回顶
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    background: var(--color-primary);
    color: var(--text-inverse);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(16px);
    transition: all var(--transition-base);
    z-index: 999;
    cursor: pointer;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--color-accent);
    transform: translateY(-2px);
}

.back-to-top svg {
    width: 20px;
    height: 20px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2.5;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* ============================================
   分页
   ============================================ */
.pagination {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-xl) 0;
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 var(--space-sm);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-fast);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    background: var(--bg-card);
}

.pagination a:hover {
    background: var(--color-primary);
    color: var(--text-inverse);
    border-color: var(--color-primary);
    text-decoration: none;
}

.pagination .current {
    background: var(--color-primary);
    color: var(--text-inverse);
    border-color: var(--color-primary);
}

/* ============================================
   评论区 —— 墨迹留痕
   ============================================ */
.comments-area {
    margin-top: var(--space-2xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border-color-light);
}

.comments-title {
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--space-xl);
    letter-spacing: 0.08em;
    position: relative;
    padding-bottom: 12px;
}

.comments-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-gold), transparent);
    border-radius: 1px;
}

.comments-title-icon {
    color: var(--color-gold);
    margin-right: 8px;
}

/* 评论列表 */
.comment-list {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--space-xl);
}

.comment-list .children {
    list-style: none;
    padding-left: 24px;
    margin-left: 24px;
    border-left: 2px solid var(--border-color-light);
}

/* 单条评论 */
.comment-item {
    margin-bottom: var(--space-lg);
}

.comment-body {
    display: flex;
    gap: 16px;
    padding: var(--space-lg);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color-light);
    transition: border-color var(--transition-base);
}

.comment-body:hover {
    border-color: var(--border-color);
}

.comment-avatar {
    flex-shrink: 0;
}

.comment-avatar .avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 2px solid var(--border-color-light);
}

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

.comment-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.comment-author {
    font-weight: 600;
    font-size: var(--text-sm);
    color: var(--text-primary);
}

.comment-author a {
    color: var(--color-primary);
    text-decoration: none;
}

.comment-author a:hover {
    color: var(--color-accent);
}

.comment-time {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

.comment-time time {
    font-style: normal;
}

.comment-awaiting-moderation {
    font-size: var(--text-xs);
    color: var(--color-gold);
    font-style: italic;
    margin-bottom: 8px;
}

.comment-text {
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.comment-text p {
    margin-bottom: 8px;
}

.comment-text p:last-child {
    margin-bottom: 0;
}

.comment-footer {
    font-size: var(--text-xs);
}

.comment-footer a {
    color: var(--text-tertiary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.no-comments {
    text-align: center;
    color: var(--text-tertiary);
    font-family: var(--font-serif);
    padding: var(--space-xl) 0;
}

/* 评论表单 */
.comment-reply-title {
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--space-lg);
    letter-spacing: 0.08em;
    position: relative;
    padding-bottom: 12px;
}

.comment-reply-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-gold), transparent);
    border-radius: 1px;
}

.reply-title-icon {
    color: var(--color-gold);
    margin-right: 8px;
}

.comment-notes {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    margin-bottom: var(--space-lg);
}

.comment-notes .required {
    color: var(--color-accent);
}

.comment-form-fields {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: var(--space-md);
}

@media (max-width: 640px) {
    .comment-form-fields {
        grid-template-columns: 1fr;
    }
}

.comment-form-field label {
    display: block;
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 4px;
    letter-spacing: 0.05em;
}

.comment-form-field .required {
    color: var(--color-accent);
}

.comment-form-field input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: var(--text-sm);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.comment-form-field input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(45, 139, 111, 0.1);
}

.comment-form-textarea {
    margin-bottom: var(--space-md);
}

.comment-form-textarea textarea {
    width: 100%;
    padding: 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
    resize: vertical;
    min-height: 120px;
    font-family: var(--font-body);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.comment-form-textarea textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(45, 139, 111, 0.1);
}

.comment-submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 32px;
    background: var(--color-primary);
    color: var(--text-inverse);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 600;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.comment-submit:hover {
    background: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* 评论分页导航 */
.comment-navigation {
    display: flex;
    justify-content: space-between;
    padding: var(--space-md) 0;
    font-size: var(--text-sm);
}

.comment-navigation a {
    color: var(--color-primary);
    text-decoration: none;
}

.comment-navigation a:hover {
    color: var(--color-accent);
}

/* 夜间模式评论区 */
[data-theme="dark"] .comment-body {
    background: var(--bg-card);
    border-color: var(--border-color-light);
}

[data-theme="dark"] .comment-avatar .avatar {
    border-color: var(--border-color);
}

[data-theme="dark"] .comment-form-field input,
[data-theme="dark"] .comment-form-textarea textarea {
    background: var(--bg-input);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .comment-form-field input:focus,
[data-theme="dark"] .comment-form-textarea textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(61, 175, 143, 0.15);
}

/* ============================================
   相关文章 —— 典籍关联
   ============================================ */
.related-posts {
    margin-top: var(--space-2xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border-color-light);
}

.related-posts-title {
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--space-lg);
    letter-spacing: 0.08em;
    position: relative;
    padding-bottom: 12px;
}

.related-posts-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-gold), transparent);
    border-radius: 1px;
}

.related-posts-title-icon {
    color: var(--color-gold);
    margin-right: 8px;
}

.related-posts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

@media (max-width: 768px) {
    .related-posts-grid {
        grid-template-columns: 1fr;
    }
}

.related-post-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color-light);
    overflow: hidden;
    transition: all var(--transition-base);
}

.related-post-card:hover {
    border-color: var(--border-color);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.related-post-thumb {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.related-post-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.related-post-card:hover .related-post-thumb img {
    transform: scale(1.05);
}

.related-post-thumb-fallback {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

.related-post-thumb-fallback .fallback-char {
    color: rgba(255, 255, 255, 0.15);
    font-size: 3rem;
    font-family: var(--font-serif);
}

.related-post-body {
    padding: 16px;
}

.related-post-title {
    font-size: var(--text-sm);
    font-weight: 600;
    line-height: var(--leading-snug);
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-post-title a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.related-post-title a:hover {
    color: var(--color-primary);
}

.related-post-meta {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

/* 夜间模式相关文章 */
[data-theme="dark"] .related-post-card:hover {
    border-color: var(--border-color-dark);
}

/* ============================================
   404页面 —— 空山不见人
   ============================================ */
.error-404 {
    text-align: center;
    padding: var(--space-3xl) 0;
}

.error-404-title {
    font-size: 8rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--space-md);
    font-family: var(--font-serif);
}

.error-404-text {
    font-size: var(--text-xl);
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    font-family: var(--font-serif);
}

/* ============================================
   加载动画
   ============================================ */
.loading-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--border-color);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 移动端菜单遮罩 */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-overlay);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

body.menu-open {
    overflow: hidden;
}

/* ============================================
   渐变文字效果 —— 鎏金&翠玉
   ============================================ */
.gradient-text {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 50%, var(--color-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 日间模式渐变 —— 墨蓝→翠玉→鎏金 */
[data-theme="light"] .gradient-text {
    background: linear-gradient(135deg, #1B3A5C 0%, #2D8B6F 50%, #C5993E 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 夜间模式渐变 —— 星紫→碧荧→月金 */
[data-theme="dark"] .gradient-text {
    background: linear-gradient(135deg, #7B6CB7 0%, #3DAF8F 40%, #D4A843 80%, #4A7FB5 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Hero 标题渐变 */
.hero-title.gradient-text,
.gradient-title {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 50%, var(--color-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 日间模式 hero 标题 —— 宣纸白→靛青→鎏金 */
[data-theme="light"] .hero-title {
    background: linear-gradient(135deg, #FFFEF9 0%, #8BA8C0 40%, #C5993E 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
}

/* 夜间模式 hero 标题 —— 星光紫→幽蓝→月金 */
[data-theme="dark"] .hero-title {
    background: linear-gradient(135deg, #C5C0E0 0%, #8B9FD4 40%, #7B6CB7 70%, #D4A843 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
}

/* ============================================
   Hero 区域装饰 —— 水墨晕染
   ============================================ */

/* 日间模式：右上方鎏金光晕 */
[data-theme="light"] .hero-section {
    position: relative;
}

[data-theme="light"] .hero-section .hero-glow {
    position: absolute;
    top: -30%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(197, 153, 62, 0.12) 0%, transparent 70%);
    pointer-events: none;
}

/* 夜间模式：紫蓝星云光晕 */
[data-theme="dark"] .hero-section .hero-glow {
    position: absolute;
    top: -30%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(107, 76, 138, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

/* ============================================
   夜间模式暗色修复
   ============================================ */
[data-theme="dark"] .post-card-title a {
    color: #E0DDE8;
}

[data-theme="dark"] .post-card-title a:hover {
    color: #A5B8E8;
}

[data-theme="dark"] .popular-post-title a {
    color: #E0DDE8;
}

[data-theme="dark"] .popular-post-title a:hover {
    color: #A5B8E8;
}

[data-theme="dark"] .category-list a {
    color: #E0DDE8;
}

[data-theme="dark"] .category-list a:hover {
    color: #A5B8E8;
}

[data-theme="dark"] .bottom-recommend-post-title a {
    color: #E0DDE8;
}

[data-theme="dark"] .bottom-recommend-post-title a:hover {
    color: #A5B8E8;
}

[data-theme="dark"] .bottom-links a {
    color: #9A96A8;
}

[data-theme="dark"] .bottom-links a:hover {
    color: #A5B8E8;
}

[data-theme="dark"] .author-card-name {
    color: #F0EDE8;
}

[data-theme="dark"] .author-card-bio {
    color: #9A96A8;
}

[data-theme="dark"] .single-post-content strong {
    color: #A5B8E8;
}

[data-theme="dark"] .single-post-content code {
    color: #A5B8E8;
    background: rgba(123, 108, 183, 0.1);
}

[data-theme="dark"] .single-post-content th {
    background: #2A1A3E;
    color: #E0DDE8;
}

[data-theme="dark"] .single-post-content tr:nth-child(even) td {
    background: rgba(123, 108, 183, 0.05);
}

[data-theme="dark"] .sub-menu a {
    color: #E0DDE8;
}

[data-theme="dark"] .sub-menu a:hover {
    color: #A5B8E8;
    background-color: rgba(123, 108, 183, 0.1);
}

[data-theme="dark"] .post-categories a {
    background: rgba(123, 108, 183, 0.35);
    color: #E0DDE8;
}

[data-theme="dark"] .news-ticker-item:hover {
    color: var(--color-accent);
}

[data-theme="dark"] .single-post-content h2 {
    border-left-color: #9B7EC8;
    border-bottom-color: rgba(123, 108, 183, 0.2);
}

[data-theme="dark"] .single-post-content h3 {
    border-left-color: #7B6CB7;
}

[data-theme="dark"] .single-post-content blockquote {
    border-left-color: #3DAF8F;
    background: rgba(123, 108, 183, 0.05);
}

[data-theme="dark"] .single-post-content blockquote::before {
    color: #3DAF8F;
}

/* ============================================
   作者标签 —— 身份标识
   ============================================ */
.author-tag {
    display: inline-block;
    padding: 3px 12px;
    border: 1.5px solid var(--color-secondary);
    color: var(--color-secondary);
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: 0.1em;
    border-radius: var(--radius-full);
    font-family: var(--font-body);
}

[data-theme="dark"] .author-tag {
    border-color: #8B9FD4;
    color: #8B9FD4;
}

/* ============================================
   云纹分隔线
   ============================================ */
.cloud-divider {
    text-align: center;
    padding: var(--space-lg) 0;
    color: var(--border-color-dark);
    opacity: 0.5;
    font-size: var(--text-lg);
    letter-spacing: 0.5em;
}

/* ============================================
   响应式设计
   ============================================ */

/* 平板 */
@media (max-width: 1024px) {
    :root {
        --content-width: 65%;
        --sidebar-width: 35%;
    }

    .hero-title {
        font-size: var(--text-4xl);
    }

    .section-nav-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .bottom-sections {
        grid-template-columns: 1fr;
    }

    .bottom-recommend-posts {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 移动端 */
@media (max-width: 768px) {
    :root {
        --content-width: 100%;
        --sidebar-width: 100%;
        --nav-height: 56px;
        --container-padding: 16px;
    }

    .header-row {
        flex-wrap: wrap;
        gap: var(--space-sm);
    }

    .header-site-title {
        font-size: 1.2rem;
    }

    .header-slogan-area {
        order: 3;
        flex: 1 1 100%;
        min-height: 0;
    }

    .header-slogan {
        font-size: 0.95rem;
    }

    .header-corner {
        gap: 4px;
    }

    .header-date {
        display: none;
    }

    .main-layout {
        flex-direction: column;
    }

    .main-content,
    .main-sidebar {
        flex: 1 1 100%;
        max-width: 100%;
    }

    .nav-mobile-toggle {
        display: flex;
    }

    .nav-menu {
        display: none;
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--bg-card);
        border-top: 1px solid var(--border-color);
        box-shadow: var(--shadow-lg);
        flex-direction: column;
        padding: var(--space-lg) var(--space-md);
        overflow-y: auto;
        z-index: 999;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

    .nav-menu.active {
        display: flex;
        transform: translateX(0);
    }

    .nav-menu > li {
        border-bottom: 1px solid var(--border-color-light);
    }

    .nav-menu > li:last-child {
        border-bottom: none;
    }

    .nav-menu > li > a {
        height: auto;
        padding: var(--space-md) var(--space-sm);
        border-radius: var(--radius-md);
        font-size: var(--text-lg);
        font-weight: 600;
        justify-content: flex-start;
    }

    .nav-menu > li + li > a::before {
        display: none;
    }

    .nav-menu .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        margin-left: var(--space-md);
        margin-bottom: var(--space-sm);
        background: var(--bg-card-hover);
        border-radius: var(--radius-md);
        padding: var(--space-xs) 0;
    }

    .nav-menu .sub-menu a {
        padding: var(--space-sm) var(--space-md);
        font-size: var(--text-base);
    }

    .hero-title {
        font-size: var(--text-3xl);
    }

    .hero-content-row {
        flex-direction: column;
        gap: var(--space-md);
        align-items: flex-start;
    }

    .hero-content-row .hero-slogan-wrapper {
        border-left: none;
        padding-left: 0;
        height: 36px;
        width: 100%;
    }

    .hero-content-row .hero-slogan {
        line-height: 36px;
        font-size: var(--text-base);
    }

    .hero-subtitle {
        font-size: var(--text-lg);
    }

    .section-nav-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .single-post-title {
        font-size: var(--text-2xl);
    }

    .single-post-content {
        font-size: var(--text-base);
    }

    .bottom-sections {
        grid-template-columns: 1fr;
    }

    .bottom-recommend-posts {
        grid-template-columns: 1fr 1fr;
    }

    .post-card-meta {
        flex-wrap: wrap;
        gap: var(--space-sm);
    }

    .error-404-title {
        font-size: 5rem;
    }
}

/* 超小屏 */
@media (max-width: 480px) {
    .hero-tags {
        flex-direction: column;
        align-items: center;
    }

    .post-card-body {
        padding: var(--space-md);
    }

    .section-nav-name {
        font-size: var(--text-xl);
    }
}

/* ============================================
   打印样式
   ============================================ */
@media print {
    .site-header,
    .main-nav,
    .main-sidebar,
    .back-to-top,
    .footer-social,
    .news-ticker-bar,
    .section-nav,
    .mobile-menu-overlay { display: none !important; }

    body {
        background: white;
        color: black;
    }

    .hero-section {
        background: #f5f5f5;
        color: black;
    }

    .hero-featured-grid {
        grid-template-columns: 1fr;
    }

    .hero-featured-main {
        grid-row: auto;
        min-height: 220px;
    }

    .hero-featured-sub {
        min-height: 140px;
    }

    a {
        color: black;
        text-decoration: underline;
    }
}

/* ============================================
   栏目区域头部
   ============================================ */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--border-color-light);
    position: relative;
}

/* section-header 底边渐变装饰 */
.section-header::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 120px;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-gold), transparent);
    border-radius: 1px;
}

.section-title {
    font-size: var(--text-xl);
    font-weight: 700;
    letter-spacing: 0.08em;
    display: flex;
    align-items: center;
    gap: 8px;
}

.section-title-icon {
    font-size: 0.7em;
}

.section-more {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    text-decoration: none;
    transition: color var(--transition-fast);
    letter-spacing: 0.03em;
}

.section-more:hover {
    color: var(--color-primary);
    text-decoration: none;
}

/* 移动端见己页面双栏变单栏 */
@media (max-width: 768px) {
    .page-jianji .main-layout > .main-content > div:first-child {
        grid-template-columns: 1fr !important;
        text-align: center;
    }

    .page-jianji .author-card-social {
        justify-content: center !important;
    }
}

/* ============================================
   见己页面暖阳风格专属样式
   ============================================ */
/* 夜间模式：见己页面卡片边框暖橙化 */
[data-theme="dark"] .page-jianji .main-content h3 {
    border-left-color: #E8945A;
}
[data-theme="dark"] .page-jianji .author-tag {
    background: rgba(232, 148, 90, 0.1);
    color: #E8945A;
    border-color: rgba(232, 148, 90, 0.2);
}
[data-theme="dark"] .page-jianji .author-card-social a {
    color: #E8945A;
}
/* 夜间模式见己四观卡片顶线 */
[data-theme="dark"] .page-jianji .main-content div[style*="border-top:3px solid #C5622E"] {
    border-top-color: #E8945A !important;
}
[data-theme="dark"] .page-jianji .main-content div[style*="border-top:3px solid #C5622E"] h4 {
    color: #E8945A !important;
}
/* 夜间模式联系邮箱 */
[data-theme="dark"] .page-jianji .main-content a[href^="mailto"] {
    color: #E8945A;
}