/* 淡水墨画风格 - TaiGuangLin Website */

/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 水墨画色彩方案 */
    --ink-black: #1a1a1a;           /* 浓墨 */
    --ink-dark: #2d2d2d;            /* 深墨 */
    --ink-medium: #4a4a4a;          /* 中墨 */
    --ink-light: #6a6a6a;           /* 淡墨 */
    --ink-lighter: #8a8a8a;         /* 更淡墨 */
    --ink-wash: #b0b0b0;            /* 墨洗 */
    --paper-white: #fefefe;         /* 宣纸白 */
    --paper-cream: #faf9f7;         /* 米纸色 */
    --paper-warm: #f5f4f2;          /* 暖纸色 */
    --paper-pink: #fdf8f9;          /* 淡粉纸色 */
    --mist-gray: #e8e6e3;           /* 雾灰 */
    --accent-gold: #c9a96e;         /* 古金色 */
    --accent-red: #8b4513;          /* 朱砂色 */
    
    /* 字体配置 */
    --font-serif-en: 'Crimson Text', 'Times New Roman', serif;
    --font-sans-en: 'Source Sans Pro', 'Arial', sans-serif;
    --font-serif-zh: 'Noto Serif SC', 'SimSun', serif;
    --font-sans-zh: 'Noto Sans SC', 'SimHei', sans-serif;
    
    /* 间距系统 */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-xxl: 4rem;
    
    /* 圆角 */
    --radius-sm: 2px;
    --radius-md: 4px;
    --radius-lg: 8px;
    
    /* 阴影 */
    --shadow-soft: 0 2px 8px rgba(26, 26, 26, 0.08);
    --shadow-medium: 0 4px 16px rgba(26, 26, 26, 0.12);
    --shadow-strong: 0 8px 32px rgba(26, 26, 26, 0.16);
}

/* 语言特定字体 */
html[data-lang="en"] {
    --font-serif: var(--font-serif-en);
    --font-sans: var(--font-sans-en);
}

html[data-lang="zh"] {
    --font-serif: var(--font-serif-zh);
    --font-sans: var(--font-sans-zh);
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--ink-dark);
    background-color: var(--paper-white);
    overflow-x: hidden;
    position: relative;
}

/* 全局水墨背景效果 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(26, 26, 26, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(26, 26, 26, 0.02) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

.simple-teaching-list li[href-en][href-zh] {
    cursor: pointer; /* 鼠标悬浮显示手型 */
    transition: color 0.3s; /* 过渡效果 */
}

.simple-teaching-list li[href-en][href-zh]:hover {
    
    text-decoration: underline; /* 下划线提示可点击 */
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* 导航样式 - 水墨风格 */
.main-nav {
    background: rgba(254, 254, 254, 0.95);
    backdrop-filter: blur(20px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--mist-gray);
    box-shadow: var(--shadow-soft);
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.logo h1 {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    font-weight: 400;
    color: var(--ink-black);
    margin-bottom: 2px;
    position: relative;
    line-height: 1.2;
}

.logo h1::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, var(--accent-gold) 50%, transparent 100%);
}

.logo .subtitle {
    font-size: 0.75rem;
    color: var(--ink-light);
    font-weight: 300;
    font-style: italic;
    text-align: center;
    line-height: 1.3;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-lg);
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--ink-medium);
    font-weight: 400;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    position: relative;
    white-space: nowrap;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 1px;
    background: var(--accent-gold);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::before,
.nav-link.active::before {
    width: 80%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--ink-black);
}

/* 两行导航链接样式 */
.nav-link.two-line {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    line-height: 1.2;
    padding: var(--space-xs) var(--space-sm);
    min-height: 40px;
    justify-content: center;
    white-space: normal;
}

.nav-link.two-line .nav-line-1,
.nav-link.two-line .nav-line-2 {
    display: block;
    font-size: 0.9rem;
    line-height: 1.1;
}

.nav-link.two-line .nav-line-1 {
    margin-bottom: 1px;
}

.nav-link.two-line .nav-line-2 {
    margin-top: 1px;
}

/* 单行导航链接样式（Connect） */
.nav-link.single-line {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
}

/* 导航操作区域 */
.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

/* 论坛按钮 - 圆形立体按钮 */
.forum-btn {
    background: linear-gradient(145deg, #f8d7da 0%, #f1c2c7 50%, #e8a2aa 100%);
    color: #6b2c5c;
    text-decoration: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 600;
    border: none;
    transition: all 0.2s ease;
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    vertical-align: middle;
    cursor: pointer;
    /* 立体浮雕效果 */
    box-shadow: 
        0 6px 12px rgba(241, 194, 199, 0.4),
        0 2px 4px rgba(241, 194, 199, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.6),
        inset 0 -1px 0 rgba(0, 0, 0, 0.1);
    /* 渐变边框效果 */
    border: 2px solid transparent;
    background-clip: padding-box;
}

/* 按钮内部渐变光泽 */
.forum-btn::before {
    content: '';
    position: absolute;
    top: 15%;
    left: 15%;
    width: 70%;
    height: 35%;
    background: linear-gradient(135deg, rgba(255,255,255,0.8) 0%, rgba(255,255,255,0.2) 100%);
    border-radius: 50%;
    opacity: 0.7;
    pointer-events: none;
}

/* 按钮外圈光晕 */
.forum-btn::after {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    background: linear-gradient(145deg, #f1c2c7, #e8a2aa);
    border-radius: 50%;
    z-index: -1;
    opacity: 0.3;
    transition: opacity 0.2s ease;
}

.forum-btn:hover {
    background: linear-gradient(145deg, #f1c2c7 0%, #e8a2aa 50%, #d8919a 100%);
    color: #5a2450;
    transform: translateY(-2px);
    box-shadow: 
        0 8px 16px rgba(241, 194, 199, 0.5),
        0 4px 8px rgba(241, 194, 199, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.7),
        inset 0 -1px 0 rgba(0, 0, 0, 0.15);
}

.forum-btn:hover::after {
    opacity: 0.5;
}

.forum-btn:active {
    transform: translateY(1px);
    box-shadow: 
        0 2px 4px rgba(241, 194, 199, 0.4),
        0 1px 2px rgba(241, 194, 199, 0.3),
        inset 0 -1px 0 rgba(255, 255, 255, 0.4),
        inset 0 1px 2px rgba(0, 0, 0, 0.2);
}

.forum-btn:active::before {
    opacity: 0.4;
}

/* 语言切换器 */
.language-switcher {
    display: flex;
    gap: var(--space-xs);
}

.lang-btn {
    background: transparent;
    border: 1px solid var(--mist-gray);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--ink-medium);
    cursor: pointer;
    transition: all 0.3s ease;
}

.lang-btn.active,
.lang-btn:hover {
    background: var(--accent-gold);
    color: var(--paper-white);
    border-color: var(--accent-gold);
}

/* 下拉菜单 - 水墨风格 */
.dropdown {
    position: relative;
}

.dropdown-content {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--paper-white);
    min-width: 220px;
    box-shadow: var(--shadow-medium);
    border-radius: var(--radius-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    border: 1px solid var(--mist-gray);
    z-index: 1001;
    overflow: hidden;
}

.dropdown-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-gold) 0%, transparent 100%);
}

.dropdown:hover .dropdown-content {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-content a {
    display: block;
    padding: var(--space-sm) var(--space-md);
    text-decoration: none;
    color: var(--ink-medium);
    font-size: 0.9rem;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(232, 230, 227, 0.5);
}

.dropdown-content a:last-child {
    border-bottom: none;
}

.dropdown-content a:hover {
    background: var(--paper-warm);
    color: var(--ink-black);
    padding-left: var(--space-lg);
}

/* 主要内容区域 */
main {
    margin-top: 80px;
}

/* Hero Banner - 水墨画风格 */
.hero-banner {
    background: linear-gradient(135deg, var(--paper-cream) 0%, var(--paper-white) 100%);
    padding: var(--space-xxl) 0;
    min-height: 600px;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.ink-wash-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 30% 20%, rgba(26, 26, 26, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse at 70% 80%, rgba(26, 26, 26, 0.05) 0%, transparent 60%);
    pointer-events: none;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 2.8rem;
    font-weight: 400;
    color: var(--ink-black);
    margin-bottom: var(--space-md);
    line-height: 1.3;
    position: relative;
}

html[data-lang="zh"] .hero-title {
    font-size: 2.5rem;
    line-height: 1.4;
}

.hero-quote {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    color: var(--ink-medium);
    margin-bottom: var(--space-lg);
    font-style: italic;
    padding: var(--space-md);
    background: rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-md);
    position: relative;
    border-left: 3px solid var(--accent-gold);
}

.hero-quote::before {
    content: '';
    position: absolute;
    top: -5px;
    right: -5px;
    width: 20px;
    height: 20px;
    background: radial-gradient(circle, rgba(26, 26, 26, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-buttons {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

/* 按钮样式 - 水墨风格 */
.btn-primary,
.btn-secondary {
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    display: inline-block;
    text-align: center;
    font-size: 0.95rem;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--ink-black);
    color: var(--paper-white);
    border-color: var(--ink-black);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: all 0.6s ease;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    background: var(--ink-medium);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.btn-secondary {
    background: transparent;
    color: var(--ink-black);
    border-color: var(--ink-black);
}

.btn-secondary:hover {
    background: var(--ink-black);
    color: var(--paper-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

/* Hero 图像 - 水墨莲花 */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.ink-lotus {
    width: 320px;
    height: 320px;
    position: relative;
}

.lotus-petals {
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 50% 30%, rgba(255, 215, 0, 0.3) 0%, transparent 60%),
        radial-gradient(ellipse at 30% 70%, rgba(255, 215, 0, 0.25) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 70%, rgba(255, 215, 0, 0.2) 0%, transparent 50%);
    border-radius: 50%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 亮金色莲花花瓣设计 */
.lotus-petals::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120px;
    height: 120px;
    background: 
        /* 外层花瓣 - 使用更亮的金色 */
        radial-gradient(ellipse 60px 30px at 50% 20%, rgba(255, 215, 0, 0.95) 0%, transparent 70%),
        radial-gradient(ellipse 30px 60px at 20% 50%, rgba(255, 215, 0, 0.9) 0%, transparent 70%),
        radial-gradient(ellipse 60px 30px at 50% 80%, rgba(255, 215, 0, 0.95) 0%, transparent 70%),
        radial-gradient(ellipse 30px 60px at 80% 50%, rgba(255, 215, 0, 0.9) 0%, transparent 70%),
        /* 内层花瓣 - 使用亮黄金色 */
        radial-gradient(ellipse 45px 22px at 35% 35%, rgba(255, 223, 0, 1) 0%, transparent 60%),
        radial-gradient(ellipse 22px 45px at 65% 35%, rgba(255, 223, 0, 1) 0%, transparent 60%),
        radial-gradient(ellipse 45px 22px at 65% 65%, rgba(255, 223, 0, 1) 0%, transparent 60%),
        radial-gradient(ellipse 22px 45px at 35% 65%, rgba(255, 223, 0, 1) 0%, transparent 60%);
    border-radius: 50%;
    opacity: 1;
    animation: lotus-bloom 6s ease-in-out infinite;
}

/* 莲花花心 - 最亮的金色 */
.lotus-petals::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 25px;
    height: 25px;
    background: 
        radial-gradient(circle, rgba(255, 255, 0, 1) 0%, rgba(255, 215, 0, 0.95) 40%, transparent 80%);
    border-radius: 50%;
    opacity: 1;
    animation: lotus-center-glow 5s ease-in-out infinite;
}

@keyframes lotus-bloom {
    0%, 100% { 
        transform: translate(-50%, -50%) scale(1) rotate(0deg);
        opacity: 0.95;
    }
    50% { 
        transform: translate(-50%, -50%) scale(1.08) rotate(3deg);
        opacity: 1;
    }
}

@keyframes lotus-center-glow {
    0%, 100% { 
        opacity: 0.95;
        transform: translate(-50%, -50%) scale(1);
    }
    50% { 
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.15);
    }
}

.ink-drops {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.ink-drops::before,
.ink-drops::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    animation: ink-drop 4s ease-in-out infinite;
}

.ink-drops::before {
    width: 8px;
    height: 8px;
    top: 20%;
    left: 30%;
    background: radial-gradient(circle, rgba(201, 169, 110, 0.3) 0%, transparent 70%);
    animation-delay: 0s;
}

.ink-drops::after {
    width: 6px;
    height: 6px;
    top: 60%;
    right: 25%;
    background: radial-gradient(circle, rgba(248, 215, 218, 0.4) 0%, transparent 70%);
    animation-delay: 2s;
}

@keyframes ink-drop {
    0%, 100% { opacity: 0; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.2); }
}

/* 水纹涟漪效果 */
.ink-lotus::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    border: 3px solid rgba(255, 215, 0, 0.7);
    border-radius: 50%;
    animation: water-ripple-1 6s ease-out infinite;
    pointer-events: none;
}

.ink-lotus::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    border: 2px solid rgba(255, 215, 0, 0.6);
    border-radius: 50%;
    animation: water-ripple-2 6s ease-out infinite 3s;
    pointer-events: none;
    z-index: -1;
}

/* 添加第三层涟漪效果 */
.ink-lotus {
    overflow: visible;
}

.ink-lotus .lotus-petals {
    z-index: 2;
}

.ink-lotus .lotus-petals::after {
    z-index: 3;
}

/* 创建额外的涟漪层 */
.ink-drops::before,
.ink-drops::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
}

.ink-drops::before {
    width: 140%;
    height: 140%;
    top: -20%;
    left: -20%;
    border: 2px solid rgba(255, 215, 0, 0.5);
    animation: water-ripple-3 6s ease-out infinite 1.5s;
}

.ink-drops::after {
    width: 160%;
    height: 160%;
    top: -30%;
    left: -30%;
    border: 1px solid rgba(255, 215, 0, 0.4);
    animation: water-ripple-4 6s ease-out infinite 4.5s;
}

@keyframes water-ripple-1 {
    0% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(0.9);
    }
    60% {
        opacity: 0.6;
        transform: translate(-50%, -50%) scale(1.2);
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(1.5);
    }
}

@keyframes water-ripple-2 {
    0% {
        opacity: 0.8;
        transform: translate(-50%, -50%) scale(0.8);
    }
    50% {
        opacity: 0.5;
        transform: translate(-50%, -50%) scale(1.1);
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(1.4);
    }
}

@keyframes water-ripple-3 {
    0% {
        opacity: 0.6;
        transform: scale(0.7);
    }
    70% {
        opacity: 0.3;
        transform: scale(1.1);
    }
    100% {
        opacity: 0;
        transform: scale(1.6);
    }
}

@keyframes water-ripple-4 {
    0% {
        opacity: 0.5;
        transform: scale(0.6);
    }
    80% {
        opacity: 0.25;
        transform: scale(1.2);
    }
    100% {
        opacity: 0;
        transform: scale(1.7);
    }
}

/* 简介区块 - 水墨风格 */
.intro-section {
    padding: var(--space-xxl) 0;
    background-color: var(--paper-warm);
    position: relative;
}

.intro-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--mist-gray), transparent);
}

.intro-content h3 {
    font-family: var(--font-serif);
    font-size: 2.2rem;
    color: var(--ink-black);
    text-align: center;
    margin-bottom: var(--space-lg);
    font-weight: 400;
    position: relative;
}

.intro-content h3::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-gold), transparent);
}

.intro-content > p {
    font-size: 1.1rem;
    color: var(--ink-medium);
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--space-xl);
    line-height: 1.8;
}

/* 新的精髓卡片网格 - 竖长卡片设计 */
.essence-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.essence-card {
    text-align: center;
    padding: var(--space-xl) var(--space-lg);
    background: var(--paper-white);
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
    border: 1px solid var(--mist-gray);
    position: relative;
    overflow: hidden;
    min-height: 320px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    /* 添加轻微阴影效果 */
    box-shadow: 0 4px 12px rgba(26, 26, 26, 0.08), 0 2px 4px rgba(26, 26, 26, 0.04);
}

.essence-card .card-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
    display: block;
    opacity: 0.8;
    position: relative;
    z-index: 1;
}

.essence-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 24px rgba(26, 26, 26, 0.12), 0 4px 8px rgba(26, 26, 26, 0.08);
    background: var(--paper-white);
    border-color: var(--accent-gold);
}

.essence-card:hover .card-ink-bg {
    opacity: 1;
}

.essence-card h4 {
    font-family: var(--font-serif);
    color: var(--ink-black);
    margin-bottom: var(--space-md);
    font-size: 1.4rem;
    font-weight: 500;
    position: relative;
    z-index: 1;
}

.essence-card p {
    color: var(--ink-medium);
    font-size: 0.95rem;
    line-height: 1.7;
    text-align: left;
    flex-grow: 1;
    position: relative;
    z-index: 1;
}

/* 2×2 横长卡片网格布局 */
.cards-grid-2x2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

/* 横长卡片样式 */
.feature-card-horizontal {
    display: flex;
    align-items: center;
    padding: var(--space-lg);
    background: var(--paper-white);
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
    border: 1px solid var(--mist-gray);
    position: relative;
    overflow: hidden;
    min-height: 160px;
    /* 添加轻微阴影效果 */
    box-shadow: 0 3px 10px rgba(26, 26, 26, 0.06), 0 1px 3px rgba(26, 26, 26, 0.03);
}

.feature-card-horizontal:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 20px rgba(26, 26, 26, 0.1), 0 3px 6px rgba(26, 26, 26, 0.06);
    border-color: var(--accent-gold);
}

/* 简笔画图标样式 */
.card-icon-sketch {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    margin-right: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 2;
}

.icon-sketch {
    width: 40px;
    height: 40px;
    color: var(--accent-gold);
    opacity: 0.8;
    transition: all 0.3s ease;
}

.feature-card-horizontal:hover .icon-sketch {
    opacity: 1;
    transform: scale(1.1);
    color: var(--ink-black);
}

/* 卡片内容区域 */
.card-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    z-index: 2;
}

.feature-card-horizontal h4 {
    font-family: var(--font-serif);
    color: var(--ink-black);
    margin-bottom: var(--space-sm);
    font-size: 1.3rem;
    font-weight: 500;
    line-height: 1.3;
}

.feature-card-horizontal p {
    color: var(--ink-medium);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: var(--space-md);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.feature-card-horizontal .card-link {
    color: var(--accent-gold);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    align-self: flex-start;
}

.feature-card-horizontal .card-link:hover {
    color: var(--ink-black) !important;
    text-decoration: underline;
    background: transparent !important;
}

/* 保持原有的 principles-grid 样式以防其他地方使用 */
.principles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.principle-item {
    text-align: center;
    padding: var(--space-xl);
    background: var(--paper-cream);
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
    border: 1px solid var(--mist-gray);
    position: relative;
    overflow: hidden;
}

.ink-brush-stroke {
    position: absolute;
    top: -10px;
    left: 20%;
    width: 60%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--ink-wash), var(--accent-gold), var(--ink-wash), transparent);
    opacity: 0.6;
}

.principle-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
    background: var(--paper-white);
}

.principle-item h4 {
    font-family: var(--font-serif);
    color: var(--ink-black);
    margin-bottom: var(--space-sm);
    font-size: 1.3rem;
    font-weight: 500;
}

.principle-item p {
    color: var(--ink-medium);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* 主要功能卡片 - 水墨风格 */
.main-sections {
    padding: var(--space-xxl) 0;
    background: linear-gradient(135deg, var(--paper-warm) 0%, var(--paper-cream) 100%);
    position: relative;
}

.main-sections::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 80% 20%, rgba(26, 26, 26, 0.02) 0%, transparent 50%),
        radial-gradient(circle at 20% 80%, rgba(26, 26, 26, 0.03) 0%, transparent 50%);
    pointer-events: none;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 2.2rem;
    color: var(--ink-black);
    text-align: center;
    margin-bottom: var(--space-xl);
    font-weight: 400;
    position: relative;
    z-index: 1;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
    position: relative;
    z-index: 1;
}

.feature-card {
    background: var(--paper-white);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid var(--mist-gray);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
}

.card-ink-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(26, 26, 26, 0.03) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 80%, rgba(201, 169, 110, 0.05) 0%, transparent 60%);
    pointer-events: none;
    opacity: 0;
    transition: all 0.3s ease;
}

.feature-card:hover .card-ink-bg {
    opacity: 1;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-strong);
    border-color: var(--accent-gold);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
    display: block;
    opacity: 0.8;
    position: relative;
    z-index: 1;
}

.feature-card h4 {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    color: var(--ink-black);
    margin-bottom: var(--space-sm);
    font-weight: 500;
    position: relative;
    z-index: 1;
}

.feature-card p {
    color: var(--ink-medium);
    margin-bottom: var(--space-lg);
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

.card-link {
    display: inline-block;
    color: var(--ink-black);
    text-decoration: none;
    font-weight: 500;
    padding: var(--space-sm) var(--space-lg);
    border: 2px solid var(--ink-black);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
    overflow: hidden;
}

.card-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--ink-black);
    transition: all 0.3s ease;
    z-index: -1;
}

/* 只对非横向卡片的按钮应用黑色背景滑动效果 */
.feature-card .card-link:hover::before {
    left: 0;
}

/* 只对非横向卡片的按钮应用黑色背景效果 */
.feature-card .card-link:hover {
    color: var(--paper-white);
}

/* 关于页面 - 水墨山水风格 */
.about-section {
    background-color: var(--paper-cream);
    padding: var(--space-xxl) 0;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.about-text h3 {
    font-family: var(--font-serif);
    font-size: 2.2rem;
    color: var(--ink-black);
    margin-bottom: var(--space-md);
    font-weight: 400;
}

.lead {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    color: var(--ink-medium);
    margin-bottom: var(--space-lg);
    font-style: italic;
    line-height: 1.7;
}

.about-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.detail-item {
    position: relative;
    padding-left: var(--space-md);
}

.detail-ink-accent {
    position: absolute;
    left: 0;
    top: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--accent-gold), var(--ink-wash), transparent);
    border-radius: 2px;
}

.detail-item h4 {
    font-family: var(--font-serif);
    color: var(--ink-black);
    margin-bottom: var(--space-xs);
    font-weight: 500;
}

.detail-item p {
    color: var(--ink-medium);
    line-height: 1.7;
}

.about-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.ink-mountain {
    width: 320px;
    height: 300px;
    position: relative;
    animation: mountain-mist 8s ease-in-out infinite;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(26, 26, 26, 0.1);
}

.mountain-layers {
    width: 100%;
    height: 100%;
    background-image: url('data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAYEBQYFBAYGBQYHBwYIChAKCgkJChQODwwQFxQYGBcUFhYaHSUfGhsjHBYWICwgIyYnKSopGR8tMC0oMCUoKSj/2wBDAQcHBwoIChMKChMoGhYaKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCj/wAARCAH0AoADASIAAhEBAxEB/8QAHwAAAQUBAQEBAQEAAAAAAAAAAAECAwQFBgcICQoL/8QAtRAAAgEDAwIEAwUFBAQAAAF9AQIDAAQRBRIhMUEGE1FhByJxFDKBkaEII0KxwRVS0fAkM2JyggkKFhcYGRolJicoKSo0NTY3ODk6Q0RFRkdISUpTVFVWV1hZWmNkZWZnaGlqc3R1dnd4eXqDhIWGh4iJipKTlJWWl5iZmqKjpKWmp6ipqrKztLW2t7i5usLDxMXGx8jJytLT1NXW19jZ2uHi4+Tl5ufo6erx8vP09fb3+Pn6/8QAHwEAAwEBAQEBAQEBAQAAAAAAAAECAwQFBgcICQoL/8QAtREAAgECBAQDBAcFBAQAAQJ3AAECAxEEBSExBhJBUQdhcRMiMoEIFEKRobHBCSMzUvAVYnLRChYkNOEl8RcYGRomJygpKjU2Nzg5OkNERUZHSElKU1RVVldYWVpjZGVmZ2hpanN0dXZ3eHl6goOEhYaHiImKkpOUlZaXmJmaoqOkpaanqKmqsrO0tba3uLm6wsPExcbHyMnK0tPU1dbX2Nna4uPk5ebn6Onq8vP09fb3+Pn6/9oADAMBAAIRAxEAPwD3+iiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigD/9k=');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
    /* 添加淡色遮罩以增强文字可读性 */
    background-blend-mode: multiply;
    background-color: rgba(255, 255, 255, 0.1);
}

.floating-mist {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 30% 60%, rgba(255, 255, 255, 0.15) 0%, transparent 40%),
        radial-gradient(ellipse at 70% 40%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(255, 255, 255, 0.12) 0%, transparent 35%);
    animation: mist-flow 12s ease-in-out infinite;
    pointer-events: none;
    border-radius: var(--radius-lg);
}

@keyframes mountain-mist {
    0%, 100% { opacity: 0.8; }
    50% { opacity: 1; }
}

@keyframes mist-flow {
    0%, 100% { transform: translateX(0); opacity: 0.6; }
    50% { transform: translateX(10px); opacity: 0.8; }
}

/* 语录页面 - 水墨风格 */
.quotes-section {
    background-color: var(--paper-cream);
    padding: var(--space-xxl) 0;
    position: relative;
}

.quotes-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 25% 25%, rgba(26, 26, 26, 0.02) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(26, 26, 26, 0.01) 0%, transparent 50%);
    pointer-events: none;
}

.quotes-gallery {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    position: relative;
    z-index: 1;
}

/* Featured卡片独占一行 */
.quote-card.featured {
    width: 100%;
    margin-bottom: var(--space-md);
}

/* 白色卡片容器 - 四张卡片一行 */
.quotes-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    width: 100%;
}

/* 调整白色卡片尺寸 */
.quotes-row .quote-card {
    min-height: 240px;
    padding: var(--space-lg);
    font-size: 0.9rem;
}

.quotes-row .quote-card blockquote {
    font-size: 0.85rem;
    line-height: 1.4;
    margin-bottom: var(--space-sm);
}

.quotes-row .quote-card cite {
    font-size: 0.8rem;
}

.quote-card {
    background: var(--paper-white);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--mist-gray);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    min-height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

/* 背景图片样式 */
.quote-bg-image {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0.1;
    z-index: 1;
    transition: opacity 0.3s ease;
}

/* 不同背景图片 */
.quote-card[data-bg="zen-mountain"] .quote-bg-image {
    background-image: linear-gradient(135deg, rgba(0,0,0,0.3), rgba(0,0,0,0.1)), 
                      url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 400 300'%3E%3Cpath d='M0,300 L50,200 L120,150 L200,100 L280,120 L350,80 L400,90 L400,300 Z' fill='%23333'/%3E%3Cpath d='M0,300 L80,220 L150,180 L250,140 L320,160 L400,130 L400,300 Z' fill='%23555'/%3E%3C/svg%3E");
}

.quote-card[data-bg="zen-stones"] .quote-bg-image {
    background-image: linear-gradient(135deg, rgba(0,0,0,0.2), rgba(0,0,0,0.1)), 
                      url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 400 300'%3E%3Ccircle cx='100' cy='200' r='30' fill='%23666'/%3E%3Ccircle cx='200' cy='180' r='25' fill='%23777'/%3E%3Ccircle cx='300' cy='220' r='35' fill='%23555'/%3E%3C/svg%3E");
}

.quote-card[data-bg="zen-bamboo"] .quote-bg-image {
    background-image: linear-gradient(135deg, rgba(0,0,0,0.2), rgba(0,0,0,0.1)), 
                      url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 400 300'%3E%3Cline x1='80' y1='50' x2='80' y2='250' stroke='%23666' stroke-width='8'/%3E%3Cline x1='150' y1='30' x2='150' y2='270' stroke='%23777' stroke-width='6'/%3E%3Cline x1='220' y1='60' x2='220' y2='240' stroke='%23555' stroke-width='10'/%3E%3C/svg%3E");
}

.quote-card[data-bg="zen-water"] .quote-bg-image {
    background-image: linear-gradient(135deg, rgba(0,0,0,0.2), rgba(0,0,0,0.1)), 
                      url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 400 300'%3E%3Cpath d='M0,150 Q100,120 200,150 T400,150 L400,300 L0,300 Z' fill='%23666'/%3E%3Cpath d='M0,180 Q150,160 300,180 L400,180 L400,300 L0,300 Z' fill='%23777'/%3E%3C/svg%3E");
}

.quote-card[data-bg="zen-lotus"] .quote-bg-image {
    background-image: linear-gradient(135deg, rgba(0,0,0,0.2), rgba(0,0,0,0.1)), 
                      url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 400 300'%3E%3Cpath d='M200,150 Q180,130 160,140 Q140,120 120,140 Q100,120 80,140 Q90,160 120,160 Q140,180 160,160 Q180,180 200,160 Q220,180 240,160 Q260,180 280,160 Q300,180 320,160 Q310,140 280,140 Q260,120 240,140 Q220,130 200,150 Z' fill='%23666'/%3E%3Ccircle cx='200' cy='150' r='8' fill='%23777'/%3E%3C/svg%3E");
}

.quote-content {
    position: relative;
    z-index: 2;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* 水印样式 */
.quote-watermark {
    position: absolute;
    bottom: 10px;
    right: 15px;
    font-size: 0.7rem;
    color: rgba(0,0,0,0.3);
    z-index: 3;
    font-family: var(--font-sans);
}

/* 下载按钮样式 */
.download-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(255,255,255,0.9);
    border: 1px solid rgba(0,0,0,0.1);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 3;
    opacity: 0;
    transform: translateY(-10px);
}

.quote-card:hover .download-btn {
    opacity: 1;
    transform: translateY(0);
}

.download-btn:hover {
    background: var(--accent-gold);
    color: white;
    transform: scale(1.1);
}

.download-icon {
    font-size: 1.2rem;
    font-weight: 900;
    line-height: 0.8;
    display: block;
    transform: scaleY(0.7);
    text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.quote-ink-bg {
    position: absolute;
    top: -20%;
    right: -20%;
    width: 60%;
    height: 60%;
    background: radial-gradient(circle, rgba(26, 26, 26, 0.03) 0%, transparent 70%);
    border-radius: 50%;
    opacity: 0;
    transition: all 0.3s ease;
    transform: rotate(45deg);
}

.quote-card:hover .quote-ink-bg {
    opacity: 1;
    transform: rotate(45deg) scale(1.1);
}

.quote-card:hover .quote-bg-image {
    opacity: 0.15;
}

.quote-card.featured {
    grid-column: 1 / -1;
    background: linear-gradient(135deg, var(--ink-black), var(--ink-medium));
    color: var(--paper-white);
    transform: scale(1.02);
}

.quote-card.featured .quote-bg-image {
    opacity: 0.2;
}

.quote-card.featured:hover .quote-bg-image {
    opacity: 0.3;
}

.quote-card.featured .quote-watermark {
    color: rgba(255,255,255,0.6);
}

.quote-card.featured .download-btn {
    background: rgba(0,0,0,0.7);
    color: white;
    border: 1px solid rgba(255,255,255,0.2);
}

.quote-card.featured .download-btn:hover {
    background: var(--accent-gold);
}

.quote-card.featured .quote-ink-bg {
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
}

.quote-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-strong);
}

.quote-card blockquote {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    color: var(--ink-dark);
    margin-bottom: var(--space-md);
    font-style: italic;
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

.quote-card.featured blockquote {
    color: var(--paper-white);
    font-size: 1.2rem;
}

.quote-card blockquote::before {
    content: '"';
    font-size: 3rem;
    color: var(--accent-gold);
    position: absolute;
    top: -15px;
    left: -15px;
    font-family: serif;
    opacity: 0.3;
}

.quote-card cite {
    color: var(--ink-medium);
    font-size: 0.9rem;
    font-weight: 500;
    position: relative;
    z-index: 1;
}

.quote-card.featured cite {
    color: rgba(254, 254, 254, 0.9);
}

/* 移动端菜单 */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 2px;
    background-color: var(--ink-black);
    border-radius: 1px;
    transition: all 0.3s ease;
}

/* 页脚 - 水墨风格 */
.main-footer {
    background: var(--ink-black);
    color: var(--paper-white);
    padding: var(--space-xxl) 0 var(--space-lg);
    position: relative;
}

.main-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-gold), transparent);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

@media (min-width: 1024px) {
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
    }
}

.footer-section h4 {
    font-family: var(--font-serif);
    margin-bottom: var(--space-md);
    color: var(--accent-gold);
    font-weight: 500;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--space-xs);
}

.footer-section a {
    color: rgba(254, 254, 254, 0.8);
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-section a:hover {
    color: var(--accent-gold);
    padding-left: var(--space-xs);
}

.social-links {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.social-link {
    padding: var(--space-xs) var(--space-sm);
    background: rgba(254, 254, 254, 0.1);
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--accent-gold);
    color: var(--ink-black);
}

.footer-bottom {
    border-top: 1px solid rgba(254, 254, 254, 0.2);
    padding-top: var(--space-lg);
    text-align: center;
}

.footer-bottom p {
    color: rgba(254, 254, 254, 0.7);
    font-size: 0.9rem;
    margin-bottom: var(--space-xs);
}

/* 响应式设计 - 平板和手机 */
@media (max-width: 1024px) {
    .nav-menu {
        gap: var(--space-md);
    }
    
    .nav-link {
        font-size: 0.9rem;
        padding: var(--space-xs) var(--space-sm);
    }
    
    .cards-grid-2x2 {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .feature-card-horizontal {
        min-height: 140px;
    }
    
    .card-icon-sketch {
        width: 50px;
        height: 50px;
        margin-right: var(--space-md);
    }
    
    .icon-sketch {
        width: 32px;
        height: 32px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background: var(--paper-white);
        flex-direction: column;
        padding: var(--space-lg);
        box-shadow: var(--shadow-strong);
        z-index: 1000;
        gap: var(--space-md);
        border-top: 1px solid var(--mist-gray);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu li {
        width: 100%;
    }
    
    .nav-link {
        display: block;
        padding: var(--space-md);
        text-align: center;
        border-bottom: 1px solid var(--mist-gray);
        font-size: 1rem;
    }
    
    .nav-link:last-child {
        border-bottom: none;
    }
    
    .dropdown-content {
        position: static;
        display: none;
        background: var(--paper-warm);
        box-shadow: none;
        padding: var(--space-sm) 0;
        margin-top: var(--space-sm);
        border-radius: var(--radius-md);
    }
    
    .dropdown:hover .dropdown-content,
    .dropdown.active .dropdown-content {
        display: block;
    }
    
    .dropdown-content a {
        padding: var(--space-sm) var(--space-lg);
        font-size: 0.9rem;
        color: var(--ink-medium);
        border-bottom: 1px solid rgba(232, 230, 227, 0.5);
    }
    
    .dropdown-content a:last-child {
        border-bottom: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .nav-actions {
        gap: var(--space-sm);
        margin-left: var(--space-sm);
    }
    
    .forum-btn {
        width: 42px;
        height: 42px;
        font-size: 0.7rem;
    }
    
    .language-switcher {
        gap: 4px;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
        text-align: center;
    }
    
    .cards-grid,
    .principles-grid,
    .essence-cards-grid,
    .cards-grid-2x2 {
        grid-template-columns: 1fr;
    }
    
    /* 移动端quotes-row改为单列 */
    .quotes-row {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .quotes-row .quote-card {
        min-height: 280px;
        padding: var(--space-xl);
        font-size: 1rem;
    }
    
    .quotes-row .quote-card blockquote {
        font-size: 0.95rem;
        line-height: 1.5;
    }
    
    .quotes-row .quote-card cite {
        font-size: 0.85rem;
    }
    
    .feature-card-horizontal {
        flex-direction: column;
        text-align: center;
        min-height: auto;
        padding: var(--space-md);
    }
    
    .card-icon-sketch {
        margin-right: 0;
        margin-bottom: var(--space-md);
    }
    
    .feature-card-horizontal p {
        -webkit-line-clamp: none;
        overflow: visible;
        display: block;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .container {
        padding: 0 var(--space-sm);
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .quote-card.featured {
        grid-column: 1;
    }
    
    .ink-lotus {
        width: 250px;
        height: 250px;
    }
    
    .ink-logo-image {
        width: 280px;
        height: 240px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-quote {
        font-size: 1rem;
    }
    
    .nav-container {
        height: 70px;
        padding: 0 var(--space-sm);
    }
    
    main {
        margin-top: 70px;
    }
    
    .hero-banner {
        min-height: 500px;
        padding: var(--space-xl) 0;
    }
    
    .feature-card,
    .principle-item,
    .quote-card {
        padding: var(--space-lg);
    }
    
    .logo h1 {
        font-size: 1.2rem;
    }
    
    .logo .subtitle {
        font-size: 0.7rem;
    }
    
    .nav-actions {
        gap: var(--space-xs);
    }
    
    .forum-btn {
        width: 38px;
        height: 38px;
        font-size: 0.65rem;
    }
    
    .language-switcher .lang-btn {
        padding: 0.4rem 0.6rem;
        font-size: 0.8rem;
    }
    
    .nav-menu {
        top: 70px;
        padding: var(--space-md);
    }
    
    .ink-logo-image {
        width: 240px;
        height: 200px;
    }
}

/* 滚动行为和动画 */
html {
    scroll-behavior: smooth;
}

/* 选择文本样式 */
::selection {
    background-color: var(--accent-gold);
    color: var(--paper-white);
}

/* 焦点样式 */
button:focus,
input:focus,
a:focus {
    outline: 2px solid var(--accent-gold);
    outline-offset: 2px;
}

/* 淡入动画 */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
}

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

/* 无障碍支持 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 语言特定样式调整 */
html[data-lang="zh"] .hero-title,
html[data-lang="zh"] .section-title,
html[data-lang="zh"] h3,
html[data-lang="zh"] h4 {
    letter-spacing: 0.02em;
}

html[data-lang="en"] .hero-title,
html[data-lang="en"] .section-title {
    letter-spacing: -0.01em;
}

/* Logo图像样式 */
.ink-logo-image {
    width: 320px;
    height: 300px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(26, 26, 26, 0.15);
    background: linear-gradient(135deg, var(--paper-white) 0%, var(--paper-cream) 100%);
}

.logo-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    position: relative;
    z-index: 1;
    opacity: 0.95;
    transition: all 0.3s ease;
    border-radius: var(--radius-lg);
}

.logo-image:hover {
    opacity: 1;
    transform: scale(1.02);
}

/* 水墨渲染叠加效果 */
.ink-wash-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 30%, rgba(26, 26, 26, 0.05) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 70%, rgba(26, 26, 26, 0.03) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 90%, rgba(26, 26, 26, 0.02) 0%, transparent 40%);
    animation: ink-wash-overlay 10s ease-in-out infinite;
    pointer-events: none;
    z-index: 2;
    border-radius: var(--radius-lg);
}

/* 淡淡云雾飘动叠加效果 */
.floating-clouds-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 25% 40%, rgba(255, 255, 255, 0.15) 0%, transparent 35%),
        radial-gradient(ellipse at 75% 60%, rgba(255, 255, 255, 0.12) 0%, transparent 40%),
        radial-gradient(ellipse at 50% 20%, rgba(255, 255, 255, 0.18) 0%, transparent 30%);
    animation: cloud-drift-overlay 15s ease-in-out infinite;
    pointer-events: none;
    z-index: 3;
    border-radius: var(--radius-lg);
}

/* 水墨滴落点缀叠加效果 */
.ink-drops-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 4;
    border-radius: var(--radius-lg);
}

.ink-drops-overlay::before,
.ink-drops-overlay::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.4) 0%, transparent 70%);
    animation: ink-drop-overlay 8s ease-in-out infinite;
}

.ink-drops-overlay::before {
    width: 12px;
    height: 12px;
    top: 15%;
    left: 20%;
    animation-delay: 0s;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 60%);
}

.ink-drops-overlay::after {
    width: 8px;
    height: 8px;
    top: 70%;
    right: 25%;
    animation-delay: 4s;
    background: radial-gradient(circle, rgba(201, 169, 110, 0.4) 0%, transparent 70%);
}

/* 动画定义 */
@keyframes ink-wash-overlay {
    0%, 100% { 
        opacity: 0.4;
        transform: scale(1) rotate(0deg);
    }
    33% { 
        opacity: 0.6;
        transform: scale(1.02) rotate(0.5deg);
    }
    66% { 
        opacity: 0.5;
        transform: scale(0.99) rotate(-0.3deg);
    }
}

@keyframes cloud-drift-overlay {
    0%, 100% { 
        opacity: 0.2;
        transform: translateX(0) translateY(0);
    }
    25% { 
        opacity: 0.4;
        transform: translateX(6px) translateY(-2px);
    }
    50% { 
        opacity: 0.3;
        transform: translateX(12px) translateY(1px);
    }
    75% { 
        opacity: 0.5;
        transform: translateX(4px) translateY(-3px);
    }
}

@keyframes ink-drop-overlay {
    0%, 100% { 
        opacity: 0;
        transform: translateY(0) scale(1);
    }
    25% { 
        opacity: 0.6;
        transform: translateY(3px) scale(1.1);
    }
    75% { 
        opacity: 0.2;
        transform: translateY(8px) scale(0.9);
    }
}

/* 打印样式 */
@media print {
    .main-nav,
    .hero-buttons,
    .card-link,
    .btn-primary,
    .btn-secondary,
    .main-footer,
    .language-switcher {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
        color: black;
        background: white;
    }
    
    .hero-title {
        font-size: 24pt;
    }
    
    .section-title {
        font-size: 18pt;
    }
}

/* 三栏布局样式 */
.three-column {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

@media (min-width: 1200px) {
    .three-column {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 教法精选和影音资料的图标样式 */
.category-icon {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    opacity: 0.8;
}

/* 教法精选章节样式 */
.teachings-section {
    padding: var(--space-xxl) 0;
    background-color: var(--paper-warm);
    position: relative;
}

/* 学生心声章节样式 */
.students-section {
    padding: var(--space-xxl) 0;
    background-color: var(--paper-warm);
    position: relative;
}

/* 影音资料章节样式 */
.media-section {
    padding: var(--space-xxl) 0;
    background-color: var(--paper-cream);
    position: relative;
}

/* 连接互动章节样式 */
.connect-section {
    padding: var(--space-xxl) 0;
    background-color: var(--paper-warm);
    position: relative;
}

/* 连接互动卡片间距 */
.connect-card {
    margin-bottom: var(--space-md);
}

.connect-card:last-child {
    margin-bottom: 0;
}

/* 简化版教法精选三栏布局 */
.teachings-grid-simple {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

@media (min-width: 1024px) {
    .teachings-grid-simple {
        grid-template-columns: repeat(3, 1fr);
        gap: 4rem;
    }
}

.teaching-column {
    position: relative;
}

.column-title {
    display: flex;
    align-items: center;
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--ink-dark);
    margin-bottom: 1rem;
    font-family: var(--font-serif);
}

.title-icon {
    font-size: 1.5rem;
    margin-right: 0.75rem;
    opacity: 0.8;
}

.column-description {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--ink-medium);
    margin-bottom: 1.5rem;
}

.simple-teaching-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.simple-teaching-list li {
    position: relative;
    padding-left: 1.2rem;
    padding-bottom: 0.8rem;
    color: var(--ink-dark);
    line-height: 1.5;
    transition: color 0.3s ease;
}

.simple-teaching-list li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--accent-gold);
    font-weight: bold;
}

.simple-teaching-list li:hover {
    color: var(--accent-gold);
}

/* Media Library 三栏布局样式 */
.media-grid-simple {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

@media (min-width: 1024px) {
    .media-grid-simple {
        grid-template-columns: repeat(3, 1fr);
        gap: 4rem;
    }
}

.media-column {
    position: relative;
}

.simple-media-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.simple-media-list li {
    position: relative;
    padding-left: 1.2rem;
    padding-bottom: 0.8rem;
    color: var(--ink-dark);
    line-height: 1.5;
    transition: color 0.3s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.simple-media-list li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--accent-gold);
    font-weight: bold;
}

.simple-media-list li:hover {
    color: var(--accent-gold);
}

.media-title {
    flex: 1;
    margin-right: 1rem;
}

.media-duration,
.media-format {
    font-size: 0.85rem;
    color: var(--ink-light);
    background: var(--paper-warm);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    white-space: nowrap;
}

.teaching-category,
.media-category {
    position: relative;
    padding: 2rem;
    background: var(--paper-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--mist-gray);
    box-shadow: var(--shadow-medium);
    transition: all 0.3s ease;
    overflow: hidden;
}

.teaching-category:hover,
.media-category:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-strong);
}

.teaching-list,
.media-items {
    list-style: none;
    margin-top: 1.5rem;
}

.teaching-list li,
.media-item {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--mist-gray);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color 0.3s ease;
}

.teaching-list li:last-child,
.media-item:last-child {
    border-bottom: none;
}

.teaching-list li:hover,
.media-item:hover {
    color: var(--accent-gold);
    transform: translateX(5px);
}

.duration,
.format {
    font-size: 0.85rem;
    color: var(--ink-light);
    background: var(--paper-warm);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
}

/* 学生心声完整故事样式 */
.testimonial-card.full-story {
    position: relative;
    padding: 2.5rem;
    margin-bottom: 2rem;
}

.story-preview {
    position: relative;
}

.story-excerpt {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--ink-dark);
    margin-bottom: 1.5rem;
    font-style: italic;
}

.read-more-btn {
    background: linear-gradient(135deg, var(--accent-gold), #b8956a);
    color: var(--paper-white);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(201, 169, 110, 0.3);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 1.5rem 0;
    width: fit-content;
}

.read-more-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(201, 169, 110, 0.4);
}

.btn-text {
    flex: 1;
}

.btn-icon {
    font-size: 1.1rem;
    font-weight: bold;
    line-height: 1;
    transition: transform 0.2s ease;
    width: 18px;
    text-align: center;
}

.read-more-btn:hover .btn-icon {
    transform: scale(1.1);
}

.full-story-content {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--mist-gray);
    position: relative;
}

.full-story-content::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 0;
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-gold), transparent);
}

.full-story-content p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--ink-medium);
    text-align: justify;
    margin-bottom: 1.5rem;
}

.full-story-content.show {
    display: block !important;
    animation: fadeInUp 0.5s ease;
}

/* 论坛链接外部链接标识 */
.nav-link[href*="47.94.224.229"]:after {
    content: "↗";
    font-size: 0.75rem;
    margin-left: 0.25rem;
    opacity: 0.6;
    transition: opacity 0.3s ease;
}

.nav-link[href*="47.94.224.229"]:hover:after {
    opacity: 0.8;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .three-column {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .teaching-category,
    .media-category {
        padding: 1.5rem;
    }
    
    .testimonial-card.full-story {
        padding: 1.5rem;
    }
    
    .story-excerpt {
        font-size: 1rem;
    }
    
    .full-story-content p {
        font-size: 0.95rem;
        text-align: left;
    }
}

/* Browse All 链接样式 */
.browse-all-section {
    text-align: center;
    margin-top: var(--space-xl);
    padding-top: 0;
}

.browse-all-link {
    display: inline-block;
    color: var(--ink-light);
    text-decoration: none;
    font-weight: 400;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    position: relative;
}

.browse-all-link:hover {
    color: var(--accent-gold);
    text-decoration: underline;
}

.browse-all-link:active {
    color: var(--ink-medium);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .browse-all-section {
        margin-top: var(--space-lg);
    }
    
    .browse-all-link {
        font-size: 0.85rem;
    }
}