/* ==================== 日月星辰主题 CSS ==================== */

/* CSS Variables */
:root {
    /* 深空藏蓝 - 主色 */
    --color-deep-blue: #0a1628;
    --color-deep-blue-light: #152238;
    
    /* 月光银白 - 主色 */
    --color-moonlight: #e8e4df;
    --color-moonlight-dark: #c9c5be;
    
    /* 朝日暖金 - 辅色 */
    --color-sunlight: #f4c873;
    --color-sunlight-glow: #ffe4a0;
    
    /* 星云浅紫 - 辅色 */
    --color-nebula: #9b8dc7;
    --color-nebula-light: #b8a9db;
    
    /* 底色 - 夜晚 */
    --color-bg-dark: #060d18;
    --color-night-gradient-start: #0a1628;
    --color-night-gradient-end: #060d18;
    
    /* 底色 - 白天 */
    --color-bg-light: #f0f8ff;
    --color-day-gradient-start: #87ceeb;
    --color-day-gradient-end: #e0f6ff;
    
    /* 文字颜色 */
    --color-text-dark: #e8e4df;
    --color-text-dark-secondary: #8a9bb0;
    --color-text-light: #2c3e50;
    --color-text-light-secondary: #6b7c93;
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.4s ease;
    --transition-slow: 0.8s ease;
    
    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.15);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.2);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.3);
    
    /* 字体 */
    --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --font-serif: 'Georgia', 'Times New Roman', serif;
}

/* 夜间模式 (默认) */
body {
    --bg-primary: var(--color-bg-dark);
    --bg-secondary: var(--color-deep-blue);
    --bg-card: rgba(21, 34, 56, 0.8);
    --text-primary: var(--color-text-dark);
    --text-secondary: var(--color-text-dark-secondary);
    --accent: var(--color-moonlight);
    --accent-glow: rgba(232, 228, 223, 0.3);
    --gradient-start: var(--color-night-gradient-start);
    --gradient-end: var(--color-night-gradient-end);
}

/* 日间模式 */
body.day-mode {
    --bg-primary: var(--color-bg-light);
    --bg-secondary: #fff;
    --bg-card: rgba(255, 255, 255, 0.9);
    --text-primary: var(--color-text-light);
    --text-secondary: var(--color-text-light-secondary);
    --accent: var(--color-sunlight);
    --accent-glow: rgba(244, 200, 115, 0.4);
    --gradient-start: var(--color-day-gradient-start);
    --gradient-end: var(--color-day-gradient-end);
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    transition: background-color var(--transition-slow), color var(--transition-normal);
}

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

ul, ol {
    list-style: none;
}

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

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

/* ==================== 动态星空背景 ==================== */
.starry-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    background: linear-gradient(180deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    transition: background var(--transition-slow);
}

#starsCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 1;
    transition: opacity var(--transition-slow);
}

body.day-mode #starsCanvas {
    opacity: 0;
}

/* 月亮 */
.moon {
    position: absolute;
    top: 10%;
    right: 15%;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, #ffefd5, #e8e4df 60%, #c9c5be);
    box-shadow: 
        0 0 40px rgba(255, 239, 213, 0.6),
        0 0 80px rgba(255, 239, 213, 0.3),
        inset -10px -10px 20px rgba(0,0,0,0.1);
    opacity: 1;
    transition: opacity var(--transition-slow);
}

body.day-mode .moon {
    opacity: 0;
}

/* 太阳 */
.sun {
    position: absolute;
    top: 8%;
    right: 15%;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, #fff9c4, #ffeb3b 40%, #ffc107 70%, #ff9800);
    box-shadow: 
        0 0 60px rgba(255, 235, 59, 0.6),
        0 0 120px rgba(255, 193, 7, 0.4),
        0 0 200px rgba(255, 152, 0, 0.2);
    opacity: 0;
    transition: opacity var(--transition-slow);
    animation: sunPulse 4s ease-in-out infinite;
}

body.day-mode .sun {
    opacity: 1;
}

@keyframes sunPulse {
    0%, 100% { 
        box-shadow: 0 0 60px rgba(255, 235, 59, 0.6), 0 0 120px rgba(255, 193, 7, 0.4), 0 0 200px rgba(255, 152, 0, 0.2);
    }
    50% { 
        box-shadow: 0 0 80px rgba(255, 235, 59, 0.8), 0 0 140px rgba(255, 193, 7, 0.6), 0 0 220px rgba(255, 152, 0, 0.3);
    }
}

/* 云朵容器 */
.clouds-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
    opacity: 0;
    transition: opacity var(--transition-slow);
}

body.day-mode .clouds-container {
    opacity: 1;
}

/* 云朵样式 */
.cloud {
    position: absolute;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 100px;
    filter: blur(2px);
    animation: floatCloud 30s linear infinite;
}

.cloud::before,
.cloud::after {
    content: '';
    position: absolute;
    background: inherit;
    border-radius: 50%;
}

.cloud-1 {
    width: 120px;
    height: 40px;
    top: 15%;
    left: -150px;
    animation-duration: 35s;
}

.cloud-1::before {
    width: 50px;
    height: 50px;
    top: -25px;
    left: 20px;
}

.cloud-1::after {
    width: 35px;
    height: 35px;
    top: -18px;
    left: 55px;
}

.cloud-2 {
    width: 150px;
    height: 50px;
    top: 25%;
    left: -200px;
    animation-duration: 45s;
    animation-delay: 10s;
}

.cloud-2::before {
    width: 60px;
    height: 60px;
    top: -30px;
    left: 30px;
}

.cloud-2::after {
    width: 45px;
    height: 45px;
    top: -22px;
    left: 70px;
}

.cloud-3 {
    width: 100px;
    height: 35px;
    top: 10%;
    left: -120px;
    animation-duration: 50s;
    animation-delay: 20s;
}

.cloud-3::before {
    width: 45px;
    height: 45px;
    top: -22px;
    left: 15px;
}

.cloud-3::after {
    width: 30px;
    height: 30px;
    top: -15px;
    left: 45px;
}

@keyframes floatCloud {
    0% { transform: translateX(0); }
    100% { transform: translateX(calc(100vw + 200px)); }
}

/* 太阳光晕 */
.sun-glow {
    position: absolute;
    top: -20%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(244, 200, 115, 0.4) 0%, rgba(244, 200, 115, 0.1) 40%, transparent 70%);
    border-radius: 50%;
    opacity: 0;
    transition: opacity var(--transition-slow);
}

body.day-mode .sun-glow {
    opacity: 1;
}

/* ==================== 导航栏 ==================== */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 2rem;
    background: linear-gradient(180deg, rgba(6, 13, 24, 0.95) 0%, rgba(6, 13, 24, 0) 100%);
    transition: all var(--transition-normal);
}

body.day-mode .main-header {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 255, 255, 0) 100%);
}

.main-header.scrolled {
    background: var(--bg-secondary);
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: 0.03em;
}

.logo-icon {
    font-size: 2.2rem;
}

.logo-text {
    background: linear-gradient(135deg, var(--color-moonlight) 0%, var(--color-nebula) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: var(--color-moonlight);
    filter: brightness(1.1);
}

body.day-mode .logo-text {
    background: linear-gradient(135deg, #8B4513 0%, #D4A574 50%, #CD853F 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: #8B4513;
    text-shadow: 0 2px 4px rgba(139, 69, 19, 0.3);
}

.main-nav ul {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.main-nav > ul > li {
    position: relative;
}

.main-nav a {
    display: inline-block;
    padding: 0.6rem 1.2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 25px;
    color: var(--text-primary);
    transition: all 0.25s ease;
    text-decoration: none;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--accent);
    background: var(--accent-glow);
    transform: translateY(-2px);
}

body.day-mode .main-nav a {
    color: #2c3e50;
}

body.day-mode .main-nav a:hover,
body.day-mode .main-nav a.active {
    color: #d68910;
    background: rgba(244, 200, 115, 0.25);
}

.more-menu {
    position: relative;
}

.sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 160px;
    padding: 0.5rem;
    background: var(--bg-secondary);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-fast);
}

.sub-menu ul {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.sub-menu li {
    white-space: nowrap;
}

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

/* 搜索框 */
.search-form {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 25px;
    padding: 0;
    border: 1px solid rgba(0, 0, 0, 0.1);
    transition: all var(--transition-fast);
    width: 200px;
    height: 36px;
}

body.night-mode .search-form {
    background: rgba(21, 34, 56, 0.9);
    border: 1px solid rgba(255,255,255,0.1);
}

.search-form:focus-within {
    box-shadow: var(--shadow-md);
    border-color: var(--accent);
}

.search-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 0.85rem;
    padding: 0 0.75rem;
}

.search-input::placeholder {
    color: var(--text-secondary);
}

/* 独立搜索按钮 */
.search-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
    color: var(--color-deep-blue);
    border: none;
    cursor: pointer;
}

.search-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 0 15px var(--accent-glow);
}

/* 主题切换按钮 */
.theme-toggle {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: all var(--transition-fast);
    border: 1px solid rgba(0, 0, 0, 0.1);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

body.night-mode .theme-toggle {
    background: rgba(21, 34, 56, 0.9);
    border: 1px solid rgba(255,255,255,0.1);
    box-shadow: none;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.toggle-icon {
    transition: transform var(--transition-normal);
}

.theme-toggle:hover .toggle-icon {
    transform: rotate(360deg);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* 移动端导航 */
.mobile-nav {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: var(--bg-secondary);
    padding: 1rem;
    box-shadow: var(--shadow-md);
    z-index: 999;
    transform: translateY(-100%);
    opacity: 0;
    transition: all var(--transition-normal);
}

.mobile-nav.active {
    transform: translateY(0);
    opacity: 1;
}

.mobile-nav ul {
    display: flex;
    flex-direction: column;
}

.mobile-nav a {
    display: block;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 1rem;
}

.mobile-nav a:hover {
    background: var(--accent-glow);
}

/* ==================== 首页主视觉 ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 6rem 2rem 4rem;
    position: relative;
}

.hero-content {
    max-width: 800px;
    animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-badge {
    display: inline-block;
    padding: 0.6rem 1.8rem;
    background: linear-gradient(135deg, rgba(232, 228, 223, 0.1) 0%, rgba(155, 141, 199, 0.1) 50%, rgba(244, 200, 115, 0.1) 100%);
    border: 1px solid transparent;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 4px;
    margin-bottom: 2rem;
    backdrop-filter: blur(15px);
    position: relative;
    overflow: hidden;
    transition: all 0.4s ease;
    box-shadow: 
        0 0 20px rgba(232, 228, 223, 0.1),
        inset 0 0 20px rgba(232, 228, 223, 0.05);
    color: var(--color-moonlight);
    text-shadow: 
        0 0 10px var(--color-moonlight),
        0 0 20px var(--color-moonlight),
        0 0 40px var(--color-nebula),
        0 2px 4px rgba(0, 0, 0, 0.3);
    animation: textGlow 2s ease-in-out infinite alternate;
}

.hero-badge::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, 
        transparent 30%, 
        rgba(232, 228, 223, 0.1) 50%, 
        transparent 70%);
    transform: rotate(45deg);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%) rotate(45deg);
    }
    100% {
        transform: translateX(100%) rotate(45deg);
    }
}

.hero-badge::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50px;
    padding: 1px;
    background: linear-gradient(135deg, 
        var(--color-moonlight) 0%, 
        var(--color-nebula) 50%, 
        var(--color-sunlight) 100%);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0.7;
}

.hero-badge:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 
        0 10px 40px rgba(232, 228, 223, 0.25),
        0 0 60px rgba(155, 141, 199, 0.2),
        inset 0 0 30px rgba(232, 228, 223, 0.1);
}

.hero-badge:hover::after {
    opacity: 1;
}

@keyframes textGlow {
    0% {
        text-shadow: 
            0 0 10px var(--color-moonlight),
            0 0 20px var(--color-moonlight),
            0 0 40px var(--color-nebula),
            0 2px 4px rgba(0, 0, 0, 0.3);
    }
    100% {
        text-shadow: 
            0 0 15px var(--color-moonlight),
            0 0 30px var(--color-moonlight),
            0 0 60px var(--color-nebula),
            0 0 80px var(--color-sunlight),
            0 2px 4px rgba(0, 0, 0, 0.3);
    }
}

body.day-mode .hero-badge {
    background: linear-gradient(135deg, rgba(244, 200, 115, 0.1) 0%, rgba(255, 255, 255, 0.9) 50%, rgba(135, 206, 235, 0.1) 100%);
    box-shadow: 
        0 0 20px rgba(244, 200, 115, 0.15),
        inset 0 0 20px rgba(255, 255, 255, 0.5);
    color: #2c3e50;
    text-shadow: 
        0 0 10px rgba(244, 200, 115, 0.8),
        0 0 20px rgba(244, 200, 115, 0.5),
        0 1px 2px rgba(0, 0, 0, 0.2);
    animation: textGlowDay 2s ease-in-out infinite alternate;
}

@keyframes textGlowDay {
    0% {
        text-shadow: 
            0 0 10px rgba(244, 200, 115, 0.8),
            0 0 20px rgba(244, 200, 115, 0.5),
            0 1px 2px rgba(0, 0, 0, 0.2);
    }
    100% {
        text-shadow: 
            0 0 15px rgba(244, 200, 115, 1),
            0 0 30px rgba(244, 200, 115, 0.7),
            0 0 40px rgba(52, 152, 219, 0.4),
            0 1px 2px rgba(0, 0, 0, 0.2);
    }
}

body.day-mode .hero-badge::after {
    background: linear-gradient(135deg, 
        var(--color-sunlight) 0%, 
        #e67e22 50%, 
        #3498db 100%);
}

body.day-mode .hero-badge:hover {
    box-shadow: 
        0 10px 40px rgba(244, 200, 115, 0.3),
        0 0 60px rgba(52, 152, 219, 0.2),
        inset 0 0 30px rgba(255, 255, 255, 0.8);
}

.hero-title {
    font-size: clamp(3rem, 10vw, 6rem);
    font-weight: 700;
    letter-spacing: 0.2em;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--color-moonlight) 0%, var(--color-nebula) 50%, var(--color-sunlight) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
}

body.day-mode .hero-title {
    background: linear-gradient(135deg, var(--color-sunlight) 0%, #e67e22 50%, #c0392b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-slogan {
    font-size: clamp(1.2rem, 4vw, 1.8rem);
    color: var(--color-moonlight);
    margin-bottom: 1rem;
    font-weight: 300;
    letter-spacing: 0.1em;
}

body.day-mode .hero-slogan {
    color: var(--color-text-light);
}

.hero-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    font-style: italic;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-moonlight) 0%, var(--color-nebula) 100%);
    color: var(--color-deep-blue);
}

body.day-mode .btn-primary {
    background: linear-gradient(135deg, var(--color-sunlight) 0%, #e67e22 100%);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px var(--accent-glow);
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--color-moonlight);
    color: var(--color-moonlight);
}

body.day-mode .btn-secondary {
    border-color: var(--color-text-light);
    color: var(--color-text-light);
}

.btn-secondary:hover {
    background: var(--accent-glow);
}

/* 滚动提示 */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

.scroll-arrow {
    font-size: 1.5rem;
}

/* ==================== 通用区块样式 ==================== */
.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: clamp(1.8rem, 5vw, 2.5rem);
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.section-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.section-more {
    font-size: 0.95rem;
    color: #333;
    font-weight: 500;
    padding: 0.4rem 1rem;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(0, 0, 0, 0.1);
    transition: all var(--transition-fast);
}

body.day-mode .section-more {
    color: #2c3e50;
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(0, 0, 0, 0.15);
}

body.night-mode .section-more {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.15);
}

.section-more:hover {
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

body.day-mode .section-more:hover {
    background: rgba(255, 255, 255, 1);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

/* ==================== 精选内容区 ==================== */
.featured-section {
    padding: 5rem 0;
}

.featured-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.featured-card {
    background: var(--bg-card);
    border-radius: 16px;
    overflow: hidden;
    transition: all var(--transition-normal);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.05);
}

body.day-mode .featured-card {
    border-color: rgba(0,0,0,0.05);
}

.featured-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.featured-main {
    grid-column: span 2;
    grid-row: span 2;
}

.card-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.featured-main .card-image {
    height: 100%;
    min-height: 400px;
}

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

.featured-card:hover .card-image img {
    transform: scale(1.1);
}

.card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.7) 100%);
}

.card-content {
    padding: 1.25rem;
}

.card-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--accent-glow);
    color: var(--accent);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

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

.featured-main .card-excerpt {
    -webkit-line-clamp: 4;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.card-read {
    color: var(--accent);
    font-weight: 500;
}

/* ==================== 五大栏目入口 ==================== */
.categories-section {
    padding: 5rem 0;
    background: var(--bg-secondary);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.category-card {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 2rem 1.5rem;
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid rgba(255,255,255,0.05);
    position: relative;
    overflow: hidden;
}

body.day-mode .category-card {
    border-color: rgba(0,0,0,0.05);
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-moonlight), var(--color-nebula));
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

body.day-mode .category-card::before {
    background: linear-gradient(90deg, var(--color-sunlight), #e67e22);
}

.category-card:hover::before {
    transform: scaleX(1);
}

.category-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.category-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.category-name {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.category-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.category-count {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--accent-glow);
    color: var(--accent);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

/* ==================== 最新更新 ==================== */
.latest-section {
    padding: 5rem 0;
}

.latest-section .section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
}

.latest-section .section-header .section-header {
    flex-direction: column;
    align-items: flex-start;
}

.latest-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.latest-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.25rem 1.5rem;
    background: var(--bg-card);
    border-radius: 12px;
    transition: all var(--transition-fast);
    border: 1px solid rgba(255,255,255,0.05);
}

body.day-mode .latest-item {
    border-color: rgba(0,0,0,0.05);
}

.latest-item:hover {
    transform: translateX(10px);
    background: var(--accent-glow);
}

.latest-date {
    font-size: 0.85rem;
    color: var(--text-secondary);
    min-width: 50px;
}

.latest-tag {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    border: 1px solid transparent;
}

.tag-essay { 
    background: rgba(244, 165, 96, 0.3); 
    color: #d2691e; 
    border-color: rgba(210, 105, 30, 0.3);
}

.tag-astro { 
    background: rgba(138, 43, 226, 0.2); 
    color: #8a2be2; 
    border-color: rgba(138, 43, 226, 0.3);
}

.tag-gallery { 
    background: rgba(105, 105, 105, 0.2); 
    color: #4a4a4a; 
    border-color: rgba(105, 105, 105, 0.3);
}

.tag-quote { 
    background: rgba(255, 105, 180, 0.2); 
    color: #ff1493; 
    border-color: rgba(255, 105, 180, 0.3);
}

.tag-notes { 
    background: rgba(65, 105, 225, 0.2); 
    color: #4169e1; 
    border-color: rgba(65, 105, 225, 0.3);
}

body.night-mode .tag-essay { 
    background: rgba(244, 200, 115, 0.2); 
    color: var(--color-sunlight); 
    border-color: rgba(244, 200, 115, 0.3);
}

body.night-mode .tag-astro { 
    background: rgba(155, 141, 199, 0.2); 
    color: var(--color-nebula-light); 
    border-color: rgba(155, 141, 199, 0.3);
}

body.night-mode .tag-gallery { 
    background: rgba(232, 228, 223, 0.2); 
    color: var(--color-moonlight); 
    border-color: rgba(232, 228, 223, 0.3);
}

body.night-mode .tag-quote { 
    background: rgba(255, 182, 193, 0.2); 
    color: #ffb6c1; 
    border-color: rgba(255, 182, 193, 0.3);
}

body.night-mode .tag-notes { 
    background: rgba(135, 206, 235, 0.2); 
    color: #87ceeb; 
    border-color: rgba(135, 206, 235, 0.3);
}

.latest-title {
    flex: 1;
    font-size: 1rem;
    font-weight: 500;
}

.latest-title a:hover {
    color: var(--accent);
}

/* ==================== 站点寄语 ==================== */
.manifesto-section {
    padding: 5rem 0;
    background: var(--bg-secondary);
}

.manifesto {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    padding: 3rem;
    background: var(--bg-card);
    border-radius: 24px;
    border: 1px solid rgba(255,255,255,0.05);
}

body.day-mode .manifesto {
    border-color: rgba(0,0,0,0.05);
}

.manifesto p {
    font-size: 1.25rem;
    line-height: 2;
    color: var(--text-primary);
    font-family: var(--font-serif);
}

.manifesto p:first-child {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 1rem;
}

.manifesto footer {
    margin-top: 2rem;
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* ==================== 页脚 ==================== */
.main-footer {
    padding: 3rem 0 1.5rem;
    background: var(--bg-secondary);
    border-top: 1px solid rgba(255,255,255,0.05);
}

body.day-mode .main-footer {
    border-color: rgba(0,0,0,0.05);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer-main {
    display: grid;
    grid-template-columns: 1.2fr 1.8fr;
    gap: 4rem;
    margin-bottom: 2.5rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

body.day-mode .footer-main {
    border-color: rgba(0,0,0,0.05);
}

.footer-brand {
    display: flex;
    flex-direction: column;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.footer-logo .logo-icon {
    font-size: 1.5rem;
}

.footer-slogan {
    font-size: 1rem;
    color: var(--accent);
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.footer-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.25rem;
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

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

.footer-columns {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column {
    display: flex;
    flex-direction: column;
}

.footer-column h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--accent);
    display: inline-block;
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-column li {
    list-style: none;
}

.footer-column a {
    font-size: 0.88rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-column a:hover {
    color: var(--accent);
    padding-left: 4px;
}

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
}

.footer-copyright {
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.footer-info {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
}

.footer-divider {
    color: var(--text-secondary);
    opacity: 0.5;
}

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

.footer-info a:hover {
    text-decoration: underline;
}

/* ==================== 友情链接区域 ==================== */
.footer-links-section {
    padding: 2rem 0;
    margin: 1rem 0;
    border-top: 1px solid rgba(255,255,255,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    text-align: center;
}

body.day-mode .footer-links-section {
    border-color: rgba(0,0,0,0.05);
}

.footer-links-section h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.footer-links-section h4::before,
.footer-links-section h4::after {
    content: '';
    width: 30px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent));
}

.footer-links-section h4::after {
    background: linear-gradient(-90deg, transparent, var(--accent));
}

.friend-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.8rem;
}

.friend-links a {
    display: inline-flex;
    align-items: center;
    padding: 0.55rem 1.2rem;
    font-size: 0.88rem;
    color: var(--text-secondary);
    text-decoration: none;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 25px;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

body.day-mode .friend-links a {
    background: rgba(0,0,0,0.03);
    border-color: rgba(0,0,0,0.08);
}

.friend-links a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transition: left var(--transition-slow);
}

.friend-links a:hover {
    color: var(--accent);
    background: rgba(232, 228, 223, 0.08);
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(232, 228, 223, 0.15);
}

body.day-mode .friend-links a:hover {
    background: rgba(244, 200, 115, 0.1);
    box-shadow: 0 4px 20px rgba(244, 200, 115, 0.2);
}

.friend-links a:hover::before {
    left: 100%;
}

.friend-links a:active {
    transform: translateY(0);
}

.footer-beian {
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.footer-beian a {
    color: var(--text-secondary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
}

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

.beian-separator {
    margin: 0 0.5rem;
}

.gongan-wrap {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    white-space: nowrap;
}

.gongan-wrap img {
    vertical-align: middle;
    display: inline-block;
}

.footer-bottom p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ==================== 内页页面标题 ==================== */
.page-header {
    padding: 100px 2rem 2rem;
    text-align: center;
}

.page-title {
    font-size: clamp(2rem, 6vw, 3rem);
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.page-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.page-breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    font-size: 0.95rem;
    color: #fff;
    padding: 0.8rem 1.5rem;
    background: rgba(10, 22, 40, 0.85);
    border-radius: 10px;
    display: inline-flex;
    border: 1px solid rgba(232, 228, 223, 0.1);
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.3);
}

body.day-mode .page-breadcrumb {
    background: rgba(255, 255, 255, 0.95);
    color: #2c3e50;
    border: 1px solid rgba(0, 0, 0, 0.1);
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.15);
}

.page-breadcrumb a {
    color: var(--accent);
    font-weight: 600;
}

.page-breadcrumb a:hover {
    text-decoration: underline;
}

body.day-mode .page-breadcrumb a {
    color: #1a73e8;
}

.breadcrumb-separator {
    color: var(--accent);
    opacity: 0.8;
    font-weight: 500;
}

/* ==================== 文章列表页面 ==================== */
.content-section {
    padding: 2rem 0 5rem;
}

.article-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.article-card {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 2rem;
    background: var(--bg-card);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.05);
    transition: all var(--transition-normal);
}

body.day-mode .article-card {
    border-color: rgba(0,0,0,0.05);
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.article-card .card-image {
    position: relative;
    min-height: 280px;
    overflow: hidden;
}

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

.article-card:hover .card-image img {
    transform: scale(1.05);
}

.article-card .card-content {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.article-card .card-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.article-card .card-excerpt {
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

/* ==================== 内页通用样式 ==================== */
.page-hero {
    min-height: 50vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 8rem 2rem 4rem;
}

.page-hero .hero-title {
    font-size: clamp(2.5rem, 8vw, 4rem);
}

.page-content {
    padding: 4rem 0;
}

.content-card {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 2.5rem;
    margin-bottom: 2rem;
    border: 1px solid rgba(255,255,255,0.05);
}

body.day-mode .content-card {
    border-color: rgba(0,0,0,0.05);
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.content-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.list-item {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border-radius: 16px;
    transition: all var(--transition-fast);
    border: 1px solid rgba(255,255,255,0.05);
}

body.day-mode .list-item {
    border-color: rgba(0,0,0,0.05);
}

.list-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
}

.list-image {
    width: 180px;
    height: 120px;
    border-radius: 12px;
    overflow: hidden;
    flex-shrink: 0;
}

.list-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.list-content {
    flex: 1;
}

.list-content .card-tag {
    margin-bottom: 0.5rem;
}

.list-content .card-title {
    margin-bottom: 0.75rem;
}

.list-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ==================== 画廊页面 ==================== */
.gallery-section {
    padding: 2rem 0 5rem;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.gallery-item {
    position: relative;
    aspect-ratio: 4/3;
    border-radius: 16px;
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-normal);
}

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

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(0,0,0,0.7) 100%);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 1rem;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-category {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: rgba(255,255,255,0.2);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    font-size: 0.8rem;
    color: #fff;
}

/* ==================== 语录页面 ==================== */
.quotes-section {
    padding: 2rem 0 5rem;
}

.quotes-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.quote-card {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 2.5rem;
    border: 1px solid rgba(255,255,255,0.05);
    transition: all var(--transition-normal);
}

body.day-mode .quote-card {
    border-color: rgba(0,0,0,0.05);
}

.quote-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.quote-text {
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--text-primary);
    font-family: var(--font-serif);
    margin-bottom: 1rem;
}

.quote-category {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: var(--accent-glow);
    color: var(--accent);
    border-radius: 20px;
    font-size: 0.8rem;
}

/* ==================== 留言页面 ==================== */
.message-section {
    padding: 2rem 0 5rem;
}

.message-form-container {
    max-width: 600px;
    margin: 0 auto;
}

.message-form {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 2.5rem;
    border: 1px solid rgba(255,255,255,0.05);
}

body.day-mode .message-form {
    border-color: rgba(0,0,0,0.05);
}

.message-form .form-group {
    margin-bottom: 1.5rem;
}

.message-form label {
    display: block;
    font-size: 0.95rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.message-form input,
.message-form textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 12px;
    font-size: 1rem;
    background: rgba(0,0,0,0.1);
    color: var(--text-primary);
    font-family: inherit;
    transition: all var(--transition-fast);
}

body.day-mode .message-form input,
body.day-mode .message-form textarea {
    border-color: rgba(0,0,0,0.1);
    background: rgba(0,0,0,0.02);
}

.message-form input:focus,
.message-form textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.message-form textarea {
    resize: vertical;
    min-height: 120px;
}

.message-form::placeholder {
    color: var(--text-secondary);
}

/* ==================== 分页样式 ==================== */
.pagination {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.05);
}

body.day-mode .pagination {
    border-color: rgba(0,0,0,0.05);
}

.pagination-list {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.page-item {
    display: flex;
    align-items: center;
}

.page-item.disabled .page-link {
    opacity: 0.5;
    cursor: not-allowed;
    color: var(--text-secondary);
}

.page-item.active .page-link {
    background: var(--accent);
    color: var(--color-deep-blue);
    font-weight: 600;
}

.page-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
}

body.day-mode .page-link {
    border-color: rgba(0,0,0,0.1);
}

.page-link:hover:not(.disabled) {
    background: var(--accent-glow);
    color: var(--accent);
}

.jumpto {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0 0.5rem;
}

.page_number {
    width: 50px;
    padding: 0.5rem;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 0.9rem;
    text-align: center;
}

body.day-mode .page_number {
    border-color: rgba(0,0,0,0.1);
}

.page_number:focus {
    outline: none;
    border-color: var(--accent);
}

.jumpto .submit {
    padding: 0.5rem 1rem;
    background: var(--accent);
    color: var(--color-deep-blue);
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.jumpto .submit:hover {
    background: var(--color-sunlight);
}

/* ==================== 文章详情页 ==================== */
.article-content {
    padding: 2rem 0 5rem;
}

.article-body {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.1rem;
    line-height: 1.9;
    color: var(--text-primary);
}

.article-body h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 2.5rem 0 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--accent);
}

.article-body h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 2rem 0 1rem;
}

.article-body p {
    margin-bottom: 1.5rem;
}

.article-body blockquote {
    margin: 1.5rem 0;
    padding: 1.5rem;
    background: var(--bg-card);
    border-left: 4px solid var(--accent);
    border-radius: 0 12px 12px 0;
    font-style: italic;
    color: var(--text-secondary);
}

.article-body ul,
.article-body ol {
    margin: 1rem 0 1.5rem 2rem;
}

.article-body li {
    margin-bottom: 0.5rem;
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1.5rem;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

body.day-mode .article-meta {
    color: #5a6c7d;
}

.article-category {
    padding: 0.3rem 0.8rem;
    background: var(--accent-glow);
    color: var(--accent);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

body.day-mode .article-category {
    background: rgba(244, 200, 115, 0.3);
    color: #b8860b;
}

.article-tags {
    max-width: 800px;
    margin: 2rem auto 3rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.05);
}

body.day-mode .article-tags {
    border-color: rgba(0,0,0,0.05);
}

.tags-label {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.article-tags .tag {
    display: inline-block;
    padding: 0.4rem 0.9rem;
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-primary);
    text-decoration: none;
    margin: 0.3rem;
    transition: all var(--transition-fast);
}

body.day-mode .article-tags .tag {
    border-color: rgba(0,0,0,0.1);
}

.article-tags .tag:hover {
    background: var(--accent-glow);
    color: var(--accent);
}

.article-nav {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.05);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

body.day-mode .article-nav {
    border-color: rgba(0,0,0,0.05);
}

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

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

.article-nav a:hover {
    text-decoration: underline;
}

/* ==================== 搜索页面 ==================== */
.search-content {
    padding: 1rem 0 5rem;
}

/* 单搜索框 */
.search-box-wrapper {
    margin-bottom: 2rem;
    display: flex;
    justify-content: center;
}

.search-form-single {
    display: flex;
    align-items: center;
    background: var(--bg-card);
    border-radius: 25px;
    padding: 0.35rem 0.35rem 0.35rem 1.25rem;
    border: 1px solid rgba(255,255,255,0.1);
    transition: all var(--transition-fast);
    width: 100%;
    max-width: 500px;
}

body.day-mode .search-form-single {
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.search-form-single:focus-within {
    box-shadow: var(--shadow-lg);
    border-color: var(--accent);
}

.search-input-single {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 1rem;
    padding: 0.5rem;
}

.search-input-single::placeholder {
    color: var(--text-secondary);
}

.search-btn-single {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: all var(--transition-fast);
    border: none;
    cursor: pointer;
    flex-shrink: 0;
}

.search-btn-single:hover {
    transform: scale(1.1);
    box-shadow: 0 0 20px var(--accent-glow);
}

/* 搜索统计 */
.search-stats {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--text-secondary);
}

.search-stats strong {
    color: var(--accent);
}

/* 搜索结果列表 */
.search-results {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.search-item {
    display: flex;
    gap: 1.5rem;
    background: var(--bg-card);
    border-radius: 16px;
    padding: 1.5rem;
    transition: all var(--transition-fast);
    border: 1px solid rgba(255,255,255,0.05);
}

body.day-mode .search-item {
    border-color: rgba(0,0,0,0.05);
}

.search-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.post-img {
    flex-shrink: 0;
    width: 200px;
    height: 150px;
    border-radius: 12px;
    overflow: hidden;
}

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

.search-item:hover .post-img img {
    transform: scale(1.05);
}

.search-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.search-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

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

.search-title a:hover {
    color: var(--accent);
}

.search-excerpt {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 1rem;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    white-space: pre-wrap;
    word-break: break-word;
}

.search-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.search-category {
    padding: 0.25rem 0.75rem;
    background: var(--accent-glow);
    border-radius: 20px;
    color: var(--accent);
    font-size: 0.85rem;
}

.search-readmore {
    color: var(--accent);
    text-decoration: none;
    font-size: 0.9rem;
    transition: opacity var(--transition-fast);
}

.search-readmore:hover {
    opacity: 0.8;
}

/* 无结果 */
.no-results {
    text-align: center;
    padding: 4rem 2rem;
}

.no-results-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    opacity: 0.6;
}

.no-results h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.no-results p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.related-searches p {
    margin-bottom: 1rem;
}

.related-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
}

.related-tags a {
    padding: 0.5rem 1rem;
    background: var(--bg-card);
    border-radius: 25px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.related-tags a:hover {
    background: var(--accent-glow);
    color: var(--accent);
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 3rem;
}

.page-link {
    padding: 0.5rem 1rem;
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.page-link:hover {
    background: var(--accent-glow);
    color: var(--accent);
}

.page-link.active {
    background: var(--accent);
    color: var(--bg-primary);
}

/* ==================== 图片详情页 ==================== */
.photo-content {
    padding: 2rem 0 5rem;
}

/* 灯箱触发效果 */
.lightbox-trigger {
    cursor: pointer;
    position: relative;
}

.lightbox-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all var(--transition-normal);
}

.lightbox-trigger:hover .lightbox-overlay {
    background: rgba(0, 0, 0, 0.4);
    opacity: 1;
}

.lightbox-icon {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    transform: scale(0.8);
    transition: transform var(--transition-normal);
}

.lightbox-trigger:hover .lightbox-icon {
    transform: scale(1);
}

.lightbox-text {
    font-size: 1rem;
    color: #fff;
    background: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

/* 灯箱容器 */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox .lightbox-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(5px);
}

.lightbox-content {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    padding: 2rem;
}

.lightbox-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    font-size: 2rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.lightbox-prev,
.lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 56px;
    height: 56px;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    font-size: 2rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.lightbox-prev {
    left: 2rem;
}

.lightbox-next {
    right: 2rem;
}

.lightbox-prev:hover,
.lightbox-next:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-50%) scale(1.1);
}

.lightbox-image {
    max-width: 90vw;
    max-height: 80vh;
    object-fit: contain;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.lightbox-caption {
    margin-top: 1.5rem;
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.8);
    text-align: center;
}

.photo-main {
    max-width: 900px;
    margin: 0 auto 2rem;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.photo-main img {
    width: 100%;
    height: auto;
    display: block;
}

.photo-info {
    max-width: 800px;
    margin: 0 auto 2rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.05);
}

body.day-mode .photo-info {
    border-color: rgba(0,0,0,0.05);
}

.info-row {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.info-row:last-child {
    margin-bottom: 0;
}

.info-label {
    font-size: 0.95rem;
    color: var(--text-secondary);
    min-width: 80px;
}

.info-value {
    font-size: 0.95rem;
    color: var(--text-primary);
}

.photo-description {
    max-width: 800px;
    margin: 0 auto 3rem;
}

.photo-description h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.photo-description p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.related-photos {
    max-width: 800px;
    margin: 0 auto;
}

.related-photos h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

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

.related-item {
    position: relative;
    aspect-ratio: 4/3;
    border-radius: 12px;
    overflow: hidden;
    text-decoration: none;
    transition: all var(--transition-normal);
}

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

.related-item:hover img {
    transform: scale(1.1);
}

.related-title {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 0.75rem;
    background: linear-gradient(180deg, transparent 0%, rgba(0,0,0,0.8) 100%);
    color: #fff;
    font-size: 0.85rem;
    text-align: center;
}

/* ==================== 归档页面 ==================== */
.archive-section {
    padding: 2rem 0 5rem;
}

.archive-content {
    max-width: 800px;
    margin: 0 auto;
}

.archive-year {
    margin-bottom: 3rem;
}

.archive-year h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--accent);
}

.archive-month {
    margin-bottom: 2rem;
}

.archive-month h3 {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.archive-month ul {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.archive-month li {
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

body.day-mode .archive-month li {
    border-color: rgba(0,0,0,0.05);
}

.archive-month a {
    color: var(--text-primary);
}

.archive-month a:hover {
    color: var(--accent);
}

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

.archive-empty {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.pagination-wrapper {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.05);
    text-align: center;
}

body.day-mode .pagination-wrapper {
    border-color: rgba(0,0,0,0.05);
}

/* ==================== 关于页面 ==================== */
.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-intro {
    font-size: 1.2rem;
    line-height: 2;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.about-values {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.value-item {
    text-align: center;
    padding: 2rem;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.05);
}

body.day-mode .value-item {
    border-color: rgba(0,0,0,0.05);
}

.value-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

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

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

/* ==================== 留言页面 ==================== */
.message-form {
    max-width: 600px;
    margin: 0 auto 3rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: var(--bg-primary);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 12px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

body.day-mode .form-group input,
body.day-mode .form-group textarea {
    border-color: rgba(0,0,0,0.1);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.submit-btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--color-moonlight) 0%, var(--color-nebula) 100%);
    color: var(--color-deep-blue);
    font-size: 1rem;
    font-weight: 600;
    border-radius: 12px;
    transition: all var(--transition-fast);
}

body.day-mode .submit-btn {
    background: linear-gradient(135deg, var(--color-sunlight) 0%, #e67e22 100%);
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* ==================== 归档页面 ==================== */
.archive-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.archive-tag {
    padding: 0.5rem 1rem;
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

body.day-mode .archive-tag {
    border-color: rgba(0,0,0,0.1);
}

.archive-tag:hover,
.archive-tag.active {
    background: var(--accent-glow);
    border-color: var(--accent);
    color: var(--accent);
}

/* ==================== 隐私页面 ==================== */
.privacy-content h2 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
    color: var(--accent);
}

.privacy-content h2:first-child {
    margin-top: 0;
}

.privacy-content p {
    margin-bottom: 1rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.privacy-content ul {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

.privacy-content li {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    list-style: disc;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1024px) {
    .featured-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .featured-main {
        grid-column: span 2;
        grid-row: span 1;
    }
    
    .featured-main .card-image {
        min-height: 300px;
    }
    
    .categories-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .content-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .main-nav {
        display: none;
    }
    
    .search-form {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .mobile-nav {
        display: block;
    }
    
    .hero {
        padding: 5rem 1.5rem 3rem;
    }
    
    .featured-grid {
        grid-template-columns: 1fr;
    }
    
    .featured-main {
        grid-column: span 1;
    }
    
    .featured-main .card-image {
        min-height: 250px;
    }
    
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .about-values {
        grid-template-columns: 1fr;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-links {
        gap: 2rem;
    }
    
    .latest-item {
        flex-wrap: wrap;
    }
    
    .list-item {
        flex-direction: column;
    }
    
    .list-image {
        width: 100%;
        height: 200px;
    }
    
    /* 搜索页面响应式 */
    .search-item {
        flex-direction: column;
    }
    
    .post-img {
        width: 100%;
        height: 200px;
    }
}

@media (max-width: 480px) {
    .header-content {
        padding: 0;
    }
    
    .logo-text {
        display: none;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-cta {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .moon {
        width: 50px;
        height: 50px;
        top: 15%;
        right: 10%;
    }
}

/* ==================== 页面切换动画 ==================== */
.page-transition {
    animation: pageIn 0.5s ease-out;
}

@keyframes pageIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==================== 加载动画 ==================== */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 200px;
}

.loading::after {
    content: '✦';
    font-size: 2rem;
    color: var(--accent);
    animation: loadingSpin 1s linear infinite;
}

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

/* ==================== 工具类 ==================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

/* ==================== 滚动导航按钮 ==================== */
.scroll-nav-buttons {
    position: fixed;
    right: 20px;
    bottom: 30px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.scroll-nav-buttons.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-btn {
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 50%;
    background: var(--bg-card);
    color: var(--accent);
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateX(20px);
}

.scroll-btn.visible {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.scroll-btn:hover {
    background: var(--accent);
    color: var(--color-deep-blue);
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

.scroll-btn:active {
    transform: scale(0.95);
}

body.day-mode .scroll-btn {
    background: rgba(255, 255, 255, 0.95);
    border-color: rgba(0,0,0,0.1);
}

/* ==================== 内容保护样式 ==================== */
body {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

img {
    -webkit-user-drag: none;
    -khtml-user-drag: none;
    -moz-user-drag: none;
    -o-user-drag: none;
    user-drag: none;
    pointer-events: none;
}

/* 保护提示动画 */
@keyframes fadeInOut {
    0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.8);
    }
    20% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
    80% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.8);
    }
}

.protection-warning {
    animation: fadeInOut 2s ease-in-out forwards;
}