/* ==========================================================================
   代码修行手记 - 全局设计系统与样式表
   ========================================================================== */

/* 亮暗模式色彩变量定义 */
:root[data-theme="dark"] {
    --bg-primary: #070a13;
    --bg-secondary: #0f1322;
    --bg-tertiary: #171d32;
    --bg-terminal: #0b0f19;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(139, 92, 246, 0.3);
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --accent-purple: #8b5cf6;
    --accent-blue: #3b82f6;
    --accent-glow: rgba(139, 92, 246, 0.15);
    --gradient-primary: linear-gradient(135deg, #a78bfa 0%, #60a5fa 100%);
    --card-shadow: rgba(0, 0, 0, 0.4);
    --selection-bg: rgba(139, 92, 246, 0.3);
    --reader-focus-bg: #090c15;
}

:root[data-theme="light"] {
    --bg-primary: #f7f7f5;
    --bg-secondary: #ffffff;
    --bg-tertiary: #eff0f2;
    --bg-terminal: #0d121f; /* 终端窗口在亮色模式下依然保持暗色调以契合程序员开发体验 */
    --border-color: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(124, 58, 237, 0.3);
    --text-primary: #18181b;
    --text-secondary: #52525b;
    --text-muted: #8e8e93;
    --accent-purple: #7c3aed;
    --accent-blue: #2563eb;
    --accent-glow: rgba(124, 58, 237, 0.08);
    --gradient-primary: linear-gradient(135deg, #7c3aed 0%, #3b82f6 100%);
    --card-shadow: rgba(0, 0, 0, 0.05);
    --selection-bg: rgba(124, 58, 237, 0.15);
    --reader-focus-bg: #f5f5f3;
}

/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.4s ease, color 0.4s ease;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

::selection {
    background-color: var(--selection-bg);
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* 页面限制容器 */
header, main, footer {
    width: 100%;
}

/* ==========================================================================
   导航头部样式 (Header & Navigation)
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
    height: 70px;
    background-color: rgba(var(--bg-primary) == #070a13 ? 7 : 247, 
                           var(--bg-primary) == #070a13 ? 10 : 247, 
                           var(--bg-primary) == #070a13 ? 19 : 245, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.4s ease, border-bottom 0.4s ease;
}

/* 精确处理亮暗模式下背景色的高透明蒙版效果 */
[data-theme="dark"] .header {
    background-color: rgba(7, 10, 19, 0.75);
}
[data-theme="light"] .header {
    background-color: rgba(247, 247, 245, 0.75);
}

.header-container {
    max-width: 1200px;
    height: 100%;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.25rem;
    font-family: 'Outfit', sans-serif;
    color: var(--text-primary);
    transition: color 0.3s;
}

.logo-bracket {
    color: var(--accent-purple);
    font-family: 'Fira Code', monospace;
    font-weight: 500;
}

.logo-text {
    margin: 0 0.25rem;
    letter-spacing: -0.5px;
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--text-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav-link.active {
    color: var(--text-primary);
}

.nav-link.active::after {
    width: 100%;
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: border-color 0.3s, color 0.3s, background-color 0.3s;
}

.theme-toggle:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
    background-color: var(--bg-secondary);
}

/* 亮暗图标切换隐藏 */
[data-theme="dark"] .sun-icon { display: block; }
[data-theme="dark"] .moon-icon { display: none; }
[data-theme="light"] .sun-icon { display: none; }
[data-theme="light"] .moon-icon { display: block; }

.sun-icon, .moon-icon {
    width: 20px;
    height: 20px;
}

/* ==========================================================================
   主体容器与视图系统 (Main Content & Views)
   ========================================================================== */
.main-content {
    flex: 1;
    max-width: 1200px;
    margin: 70px auto 0 auto;
    padding: 3rem 2rem;
    position: relative;
    z-index: 10;
}

.view-section {
    display: none;
    animation: fadeIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.view-section.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 通用区块头部 */
.section-header {
    margin-bottom: 3rem;
    text-align: center;
}

.section-header-inline {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
}

.view-title, .section-title {
    font-size: 2.25rem;
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.section-title {
    font-size: 1.75rem;
}

.view-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-top: 0.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.link-more {
    text-decoration: none;
    color: var(--accent-purple);
    font-weight: 500;
    transition: color 0.3s, transform 0.3s;
    font-size: 0.95rem;
}

.link-more:hover {
    color: var(--accent-blue);
    transform: translateX(3px);
}

/* ==========================================================================
   视图 1: 修行主页 / Dashboard
   ========================================================================== */
.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 4rem;
}

.hero-intro {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.badge {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--accent-purple);
    padding: 0.35rem 0.85rem;
    border-radius: 99px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 1.5rem;
    font-family: 'Outfit', sans-serif;
}

.hero-title {
    font-size: 3.5rem;
    font-family: 'Outfit', sans-serif;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1.5px;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 520px;
}

/* 境界滑动选择卡 */
.realm-selector-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    width: 100%;
    max-width: 500px;
    box-shadow: 0 10px 30px var(--card-shadow);
}

.realm-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.realm-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.realm-value {
    font-weight: 700;
    color: var(--accent-purple);
    font-family: 'Outfit', sans-serif;
    font-size: 1.05rem;
}

#realm-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--bg-tertiary);
    outline: none;
    margin: 1rem 0;
}

#realm-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent-purple);
    cursor: pointer;
    border: 3px solid var(--bg-secondary);
    box-shadow: 0 0 10px var(--accent-purple);
    transition: transform 0.1s;
}

#realm-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.realm-ticks {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* 交互终端设计 */
.terminal-container {
    background-color: var(--bg-terminal);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 40px var(--card-shadow);
    font-family: 'Fira Code', monospace;
    font-size: 0.85rem;
    height: 380px;
    display: flex;
    flex-direction: column;
}

.terminal-header {
    background-color: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 1.25rem;
    display: flex;
    align-items: center;
}

.terminal-dots {
    display: flex;
    gap: 6px;
    margin-right: 1.5rem;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.dot-red { background-color: #ef4444; }
.dot-yellow { background-color: #f59e0b; }
.dot-green { background-color: #10b981; }

.terminal-title {
    color: var(--text-muted);
    font-size: 0.8rem;
    flex: 1;
    text-align: center;
}

.terminal-lang {
    background-color: rgba(255, 255, 255, 0.07);
    color: var(--text-secondary);
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
}

.terminal-body {
    padding: 1.5rem;
    overflow-y: auto;
    flex: 1;
    color: #e2e8f0;
    line-height: 1.5;
}

.terminal-body code {
    white-space: pre-wrap;
    word-break: break-all;
}

/* JS语法高亮模拟 */
.t-keyword { color: #f472b6; }
.t-string { color: #34d399; }
.t-number { color: #fb923c; }
.t-function { color: #60a5fa; }
.t-comment { color: #6b7280; font-style: italic; }
.t-cursor {
    display: inline-block;
    width: 7px;
    height: 15px;
    background-color: var(--accent-purple);
    animation: cursorBlink 1s step-end infinite;
    vertical-align: middle;
    margin-left: 2px;
}

@keyframes cursorBlink {
    50% { opacity: 0; }
}

/* 数据看板卡片 (Dashboard Stats) */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 5rem;
}

.stat-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 4px 20px var(--card-shadow);
    transition: transform 0.3s, border-color 0.3s;
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-hover);
}

.stat-num {
    font-size: 2.5rem;
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* 最新手记容器 */
.featured-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

/* ==========================================================================
   通用文章卡片 (Article Cards & Grid)
   ========================================================================== */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.article-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    height: 380px;
    box-shadow: 0 10px 30px var(--card-shadow);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
                border-color 0.3s, 
                box-shadow 0.3s;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.article-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity 0.3s;
}

.article-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-hover);
    box-shadow: 0 15px 35px var(--accent-glow);
}

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

.card-category {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-purple);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1rem;
    display: block;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--text-primary);
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-excerpt {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 2rem;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 1.25rem;
    margin-top: auto;
}

.card-meta-date {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.card-arrow {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s, color 0.3s, transform 0.3s;
}

.article-card:hover .card-arrow {
    background-color: var(--accent-purple);
    color: white;
    transform: translateX(4px);
}

/* ==========================================================================
   视图 2: 归档页工具栏与搜索 (Toolbar & Filters)
   ========================================================================== */
.toolbar {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    margin-bottom: 3rem;
    box-shadow: 0 4px 20px var(--card-shadow);
}

.search-box {
    position: relative;
    flex: 1;
    max-width: 400px;
}

.search-icon {
    position: absolute;
    left: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: var(--text-muted);
}

#search-input {
    width: 100%;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0.75rem 1.25rem 0.75rem 2.75rem;
    color: var(--text-primary);
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.3s, box-shadow 0.3s;
}

#search-input:focus {
    border-color: var(--accent-purple);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.category-filters {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.filter-btn {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.6rem 1.2rem;
    border-radius: 10px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.3s;
}

.filter-btn:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.filter-btn.active {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 15px var(--accent-glow);
}

/*骨架屏 loading 态*/
.article-card-placeholder {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem;
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* ==========================================================================
   视图 3: 心法速记 (Code Snippets)
   ========================================================================== */
.snippets-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.snippet-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 30px var(--card-shadow);
    transition: transform 0.3s, border-color 0.3s;
}

.snippet-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
}

.snippet-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.snippet-title-group {
    display: flex;
    flex-direction: column;
}

.snippet-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.snippet-tag {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.snippet-body {
    position: relative;
    background-color: var(--bg-terminal);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.25rem;
    font-family: 'Fira Code', monospace;
    font-size: 0.8rem;
    margin-bottom: 1rem;
    overflow-x: auto;
}

.snippet-body pre {
    margin: 0;
}

.copy-btn {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #e2e8f0;
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-size: 0.7rem;
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

.copy-btn:hover {
    background-color: var(--accent-purple);
    color: white;
    border-color: transparent;
}

.copy-btn.copied {
    background-color: #10b981;
    color: white;
    border-color: transparent;
}

.snippet-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ==========================================================================
   视图 4: 关于我 (About Page & Timeline)
   ========================================================================== */
.about-grid {
    display: grid;
    grid-template-columns: 0.35fr 0.65fr;
    gap: 4rem;
    align-items: flex-start;
}

.about-profile {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 3rem 2rem;
    text-align: center;
    box-shadow: 0 10px 30px var(--card-shadow);
    display: flex;
    flex-direction: column;
    align-items: center;
    position: sticky;
    top: 100px;
}

.avatar-container {
    position: relative;
    width: 120px;
    height: 120px;
    margin-bottom: 2rem;
}

.avatar-glow {
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    background: var(--gradient-primary);
    border-radius: 50%;
    filter: blur(10px);
    opacity: 0.4;
    animation: rotateGlow 10s linear infinite;
}

@keyframes rotateGlow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.avatar-fallback {
    width: 100%;
    height: 100%;
    background-color: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--accent-purple);
    font-size: 1.2rem;
    letter-spacing: 1px;
}

.profile-name {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: 'Outfit', sans-serif;
    margin-bottom: 0.25rem;
}

.profile-title {
    color: var(--accent-purple);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1.5rem;
}

.profile-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2rem;
}

.profile-socials {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.social-link svg {
    width: 18px;
    height: 18px;
}

.social-link:hover {
    background-color: var(--accent-purple);
    color: white;
    border-color: transparent;
    transform: translateY(-3px);
}

.about-sub {
    font-size: 1.5rem;
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--accent-purple);
    padding-left: 0.75rem;
}

/* 时间线结构 */
.timeline {
    position: relative;
    padding-left: 2rem;
    border-left: 2px solid var(--border-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 2.5rem;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -2.35rem;
    top: 0.25rem;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--bg-primary);
    border: 3px solid var(--accent-purple);
    box-shadow: 0 0 8px var(--accent-purple);
}

.timeline-time {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-purple);
    margin-bottom: 0.25rem;
}

.timeline-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.timeline-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 技能块 */
.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.skill-tag {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: all 0.3s;
}

.skill-tag:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
    background-color: var(--bg-tertiary);
}

/* ==========================================================================
   沉浸式阅读器模态框 (Drawer / Overlay Reader)
   ========================================================================== */
.reader-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: var(--bg-primary);
    z-index: 1000;
    overflow-y: auto;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s ease;
    transform: translateY(100%);
    opacity: 0;
    pointer-events: none;
}

.reader-modal.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}

/* 阅读进度条 */
.reader-progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    width: 0%;
    background: var(--gradient-primary);
    z-index: 1010;
}

.reader-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 4rem 2rem;
    position: relative;
}

.reader-header-actions {
    position: absolute;
    top: 2rem;
    right: 2rem;
    display: flex;
    gap: 1rem;
}

.reader-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.reader-btn svg {
    width: 18px;
    height: 18px;
}

.reader-btn:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
    background-color: var(--bg-secondary);
}

#reader-focus-btn.active {
    background-color: var(--accent-purple);
    color: white;
    border-color: transparent;
}

/* 阅读器内部布局 */
.reader-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 4rem;
    align-items: flex-start;
}

.reader-body {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 4rem;
    box-shadow: 0 10px 40px var(--card-shadow);
}

.reader-article-header {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 2rem;
    margin-bottom: 2.5rem;
}

.reader-category {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-purple);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
    display: inline-block;
}

.reader-title {
    font-size: 2.5rem;
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    line-height: 1.25;
    margin-bottom: 1rem;
}

.reader-meta {
    display: flex;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.meta-divider {
    margin: 0 0.75rem;
}

/* 文章正文排版系统 */
.reader-content {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.reader-content h2, .reader-content h3 {
    color: var(--text-primary);
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    margin: 2.5rem 0 1rem 0;
}

.reader-content h2 {
    font-size: 1.75rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.reader-content h3 {
    font-size: 1.35rem;
}

.reader-content p {
    margin-bottom: 1.5rem;
}

.reader-content code:not(pre code) {
    background-color: var(--bg-tertiary);
    color: var(--accent-purple);
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
}

.reader-content pre {
    background-color: var(--bg-terminal);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    font-family: 'Fira Code', monospace;
    font-size: 0.85rem;
    margin: 2rem 0;
    overflow-x: auto;
    color: #e2e8f0;
}

.reader-content blockquote {
    border-left: 4px solid var(--accent-purple);
    padding-left: 1.5rem;
    margin: 2rem 0;
    color: var(--text-muted);
    font-style: italic;
    background-color: rgba(139, 92, 246, 0.03);
    border-radius: 0 8px 8px 0;
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
}

/* 目录栏 */
.reader-toc-sidebar {
    position: sticky;
    top: 6rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2rem 1.5rem;
    box-shadow: 0 10px 30px var(--card-shadow);
}

.toc-title {
    font-size: 1rem;
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    margin-bottom: 1.25rem;
    color: var(--text-primary);
}

.toc-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.toc-link {
    text-decoration: none;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: all 0.3s;
    line-height: 1.4;
    border-left: 2px solid transparent;
    padding-left: 0.75rem;
}

.toc-link:hover {
    color: var(--text-primary);
}

.toc-link.active {
    color: var(--accent-purple);
    border-left-color: var(--accent-purple);
    font-weight: 600;
}

.toc-link[data-depth="h3"] {
    margin-left: 1rem;
    font-size: 0.8rem;
}

/* 专注阅读模式适配 */
.reader-modal.focus-mode-active {
    background-color: var(--reader-focus-bg);
}

.reader-modal.focus-mode-active .reader-layout {
    grid-template-columns: 1fr;
    max-width: 760px;
    margin-left: auto;
    margin-right: auto;
}

.reader-modal.focus-mode-active .reader-body {
    padding: 3rem;
    border-color: transparent;
    background-color: transparent;
    box-shadow: none;
}

.reader-modal.focus-mode-active .reader-toc-sidebar {
    display: none;
}

/* ==========================================================================
   合规页脚区 (Footer)
   ========================================================================== */
.footer {
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    padding: 2.5rem 2rem;
    margin-top: auto;
    position: relative;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.footer-info {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.copyright {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
}

.site-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.beian-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.beian-link {
    text-decoration: none;
    font-size: 0.8rem;
    color: var(--text-secondary);
    transition: color 0.3s;
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
}

.beian-link:hover {
    color: var(--accent-purple);
    background-color: var(--bg-tertiary);
}

.gov-icon {
    width: 16px;
    height: 16px;
}

/* 备案抽屉控制 */
.check-toggle-btn {
    position: absolute;
    right: 2rem;
    bottom: 0.5rem;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 0.7rem;
    cursor: pointer;
    opacity: 0.3;
    transition: opacity 0.3s;
}

.check-toggle-btn:hover {
    opacity: 1;
    color: var(--accent-purple);
}

.check-drawer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 2000;
    display: flex;
    justify-content: flex-end;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.check-drawer.active {
    opacity: 1;
    pointer-events: auto;
}

.check-drawer-content {
    width: 100%;
    max-width: 700px;
    height: 100%;
    background-color: var(--bg-secondary);
    box-shadow: -10px 0 30px rgba(0,0,0,0.5);
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    border-left: 1px solid var(--border-color);
}

.check-drawer.active .check-drawer-content {
    transform: translateX(0);
}

.drawer-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.drawer-header h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
}

.drawer-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.drawer-close:hover {
    color: var(--text-primary);
}

.drawer-body {
    padding: 1.5rem;
    overflow-y: auto;
    flex: 1;
}

.compliance-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1.5rem;
    font-size: 0.85rem;
}

.compliance-table th, .compliance-table td {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    text-align: left;
}

.compliance-table th {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    font-weight: 600;
}

.compliance-table td {
    color: var(--text-secondary);
}

.status-badge {
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-badge.pass {
    background-color: rgba(16, 185, 129, 0.1);
    color: #10b981;
}

.status-badge.pending {
    background-color: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
}

.drawer-tip {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* ==========================================================================
   修饰性背景发光 (Ambient Glow)
   ========================================================================== */
.ambient-glow {
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.12;
    z-index: 1;
    pointer-events: none;
}

[data-theme="light"] .ambient-glow {
    opacity: 0.05;
}

.bg-glow-1 {
    top: 15%;
    left: -100px;
    background: radial-gradient(circle, var(--accent-purple) 0%, transparent 80%);
    animation: floatGlow1 20s ease-in-out infinite alternate;
}

.bg-glow-2 {
    bottom: 20%;
    right: -100px;
    background: radial-gradient(circle, var(--accent-blue) 0%, transparent 80%);
    animation: floatGlow2 25s ease-in-out infinite alternate;
}

@keyframes floatGlow1 {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(50px, 40px) scale(1.1); }
}

@keyframes floatGlow2 {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(-40px, -50px) scale(0.9); }
}

/* ==========================================================================
   响应式媒介查询适配 (Media Queries)
   ========================================================================== */
@media (max-width: 1024px) {
    .articles-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 968px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .hero-intro {
        align-items: center;
        text-align: center;
    }
    
    .hero-desc {
        margin-left: auto;
        margin-right: auto;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .about-profile {
        position: static;
    }
    
    .reader-layout {
        grid-template-columns: 1fr;
    }
    
    .reader-toc-sidebar {
        display: none;
    }
}

@media (max-width: 768px) {
    .header-container {
        padding: 0 1rem;
    }
    
    .nav {
        gap: 1rem;
    }
    
    .main-content {
        padding: 2rem 1rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .dashboard-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .featured-grid {
        grid-template-columns: 1fr;
    }
    
    .snippets-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-container {
        flex-direction: column;
        text-align: center;
    }
    
    .beian-links {
        justify-content: center;
    }
    
    .reader-body {
        padding: 2rem 1rem;
    }
    
    .reader-title {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .nav {
        display: none; /* 在超小屏幕上隐藏文字导航，通过Logo点击返回主页，保障手机核查排版不拥挤 */
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
    }
}