:root {
    /* 主要顏色 */
    --primary-color: #b388ff;
    --secondary-color: #c1bcd3;
    
    /* 文字顏色 */
    --text-primary: #f0ebff;
    --text-secondary: #c1bcd3;
    --text-light: #ffffff;
    
    /* 背景顏色 */
    --bg-primary: #060122;
    --bg-secondary: #261851;
    --bg-card: #281d4b;
    --bg-overlay: rgba(0, 0, 0, 0.5);
    
    /* 漸層背景 */
    --gradient-primary: linear-gradient(120deg, #261851, #120123);
    --gradient-secondary: linear-gradient(70deg, #130b3f, #553976);
    
    /* 情緒顏色 */
    --emotion-happy: #FFD93D;
    --emotion-sad: #4A90E2;
    --emotion-angry: #FF6B6B;
    --emotion-fear: #6C5CE7;
    
    /* 按鈕顏色 */
    --btn-primary: var(--primary-color);
    --btn-hover: #9666ff;
    --btn-secondary: var(--bg-card);
    --btn-secondary-hover: #3d2875;
    
    /* 特效顏色 */
    --void-color: rgba(0, 0, 0, 0.8);
    --void-glow: rgba(179, 136, 255, 0.3);
    --void-glow-strong: rgba(179, 136, 255, 0.5);
    
    /* 動畫效果顏色 */
    --pat-color: rgba(255, 192, 203, 0.15);
    --pat-glow: rgba(255, 192, 203, 0.5);
    --lightning-color: rgba(255, 69, 0, 0.3);
    --question-color: rgba(135, 206, 235, 0.8);
    
    /* 遮罩顏色 */
    --overlay-light: rgba(26, 15, 37, 0.5);
    --overlay-medium: rgba(26, 15, 37, 0.6);
    --overlay-dark: rgba(26, 15, 37, 0.8);
    --overlay-darker: rgba(0, 0, 0, 0.8);
    
    /* 陰影效果 */
    --shadow-normal: rgba(0, 0, 0, 0.3);
    --shadow-strong: rgba(0, 0, 0, 0.5);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'inherit','auto', sans-serif;
}

body.voidcan  {
    background-color: var(--bg-primary);
    color: var(--secondary-color);
    line-height: 1.6;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

.logo {
    margin-bottom: 8px;
    color: var(--text-primary);
    font-size: 1.5rem;
    text-decoration: none;
    font-weight: 900;
}

.btn, .close-btn {
    display: inline-block;
    margin: 24px 8px 0 0;
    padding: 14px 26px;
    background-color: var(--primary-color);
    color: #1a1a1a;
    font-weight: 600;
    border-radius: 50px;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: var(--text-light);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
} 

ul{
    margin-left: 20px;
}

h1, h2{
    font-size: 24px;
}

h3{
    font-size: 20px;
}

.highlight{
    margin-bottom: 5px;
    font-size: 30px;
    font-weight: 600;
    color: var(--primary-color);
    text-align: center;
}

header{
    text-align: center;
}

.landing-page header {
    padding: 50px 0 30px;
}

.voidcan .logo {
    font-size: 3rem;
}

.voidcan h1{
    text-align: left;
}

.tagline {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.hero {
    background: var(--gradient-primary);
    border-radius: 40px;
    padding: 40px;
    margin-bottom: 50px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

h1, h2, h3 {
    margin-bottom: 24px;
    color: var(--primary-color);
}

.concept {
    margin-bottom: 50px;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.feature-card {
    background-color: var(--bg-card);
    border-radius: 25px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.void-animation {
    position: relative;
    width: 200px;
    height: 200px;
    margin: 30px auto 60px;
}

.void-core {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, #3b1a63 0%, #121212 70%);
    border-radius: 50%;
    animation: pulse 3s infinite alternate;
    box-shadow: 0 0 20px #ff00ff, 0 0 30px #8a2be2, 0 0 10px #9400d3, 0 0 110px rgba(148, 0, 211, 0.5);
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 20px 5px rgba(179, 136, 255, 0.3);
        transform: scale(0.95);
    }
    100% {
        box-shadow: 0 0 30px 10px rgba(179, 136, 255, 0.5);
        transform: scale(1.05);
    }
}

.cta {
    background: var(--gradient-secondary);
    text-align: center;
    padding: 40px;
    border-radius: 18px;
    margin-bottom: 50px;
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .hero {
        padding: 30px;
    }
    
    .logo {
        font-size: 2.5rem;
    }
    
    .tagline {
        font-size: 1.2rem;
    }
}

/* 補充 options 相關樣式 */
.options {
    display: flex;
    gap: 20px;
    margin-bottom: 35px;
}

.option-card {
    background-color: var(--bg-card);
    border-radius: 15px;
    padding: 20px;
    text-align: center;
    transition: all 0.3s ease;
    width: 50%;
}

.option-card:hover {
    background-color: rgba(73, 49, 91, 0.8);
}

.option-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: var(--text-light);
}

.feature-icon{
    font-size: 32px;
}

/* 語言切換器樣式 */
.language-switcher {
    position: absolute;
    top: 24px;
    right: 24px;
    display: inline-block;
    opacity: 0.6;
    z-index: 1000;
    transition: opacity 0.3s;
}

.language-switcher:hover {
    opacity: 1;
}

.language-icon {
    font-size: 24px;
    color: #f0f0f0;
    cursor: pointer;
    transition: color 0.3s;
}

.language-icon:hover {
    color: #b388ff;
}

.language-dropdown {
    display: none;
    position: absolute;
    right: 0;
    background-color: #2a2a2a;
    min-width: 120px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
    border-radius: 4px;
    z-index: 1000;
    overflow: hidden;
}

.language-switcher:hover .language-dropdown,
.language-dropdown:hover {
    display: block;
}

.lang-option {
    color: #f0f0f0;
    padding: 10px 15px;
    text-decoration: none;
    display: block;
    text-align: left;
    cursor: pointer;
    transition: background-color 0.3s;
}

.lang-option:hover {
    background-color: #3a3a3a;
}

.lang-option.active {
    background-color: #b388ff;
    color: white;
}

/* 添加語言切換器的響應式樣式 */
@media (max-width: 768px) {
    .language-switcher {
        position: fixed;
        right: 10px;
        margin-bottom: 0;
        text-align: right;
        z-index: 1001;
    }
    
    .language-dropdown {
        position: fixed;
        top: 40px;
        right: 10px;
    }
}


:root {
    --deep-blue: #1A2B4E;
    --purple: #6B4EBA;
    --warm-gold: #E6B45E;
    --light-blue-gray: #E1E5ED;
    --dark-gray: #2D3142;
    --white: #FFFFFF;
    --void-purple: #1E1134;
    --void-blue-purple: #433D80;
}

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

body {
    font-family: 'Noto Sans TC', 'Montserrat', sans-serif;
    color: var(--light-blue-gray);
    background-color: #0A0E1B;
    line-height: 1.6;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 20px;
}

.landing-page header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 15px 0;
    backdrop-filter: blur(10px);
    background-color: rgba(10, 14, 27, 0.9);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: #f0ebff;
    text-decoration: none;
    letter-spacing: 1px;
}

.logo span {
    color: var(--purple);
}

.back-btn {
    color: var(--light-blue-gray);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 5px;
}

.back-btn:hover {
    color: #f0ebff;
}

h1 {
    font-size: 2.5rem;
    color: #f0ebff;
    margin-bottom: 30px;
    text-align: center;
}

h2 {
    font-size: 1.8rem;
    color: #f0ebff;
    margin: 40px 0 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

h3, h4 {
    color: var(--primary-color);
    font-size: 1.3rem;
}

h3 {
    margin: 30px 0 15px;
}

p, li {
    margin-bottom: 20px;
    color: var(--text-primary);
}

ul, ol {
    margin: 0 0 20px 20px;
}

li {
    margin-bottom: 10px;
}

.section {
    margin-bottom: 50px;
    background: rgba(30, 35, 50, 0.3);
    border-radius: 10px;
    padding: 30px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.last-updated {
    font-size: 0.9rem;
    color: var(--light-blue-gray);
    opacity: 0.7;
    text-align: center;
    margin-bottom: 40px;
}

.highlight-banner {
    background-color: rgba(107, 78, 186, 0.2);
    padding: 20px;
    border-radius: 8px;
    margin: 20px 0;
    border-left: 3px solid var(--purple);
}

.highlight h4 {
    color: #f0ebff;
    margin-bottom: 10px;
}

.tabs {
    display: flex;
    margin-bottom: 30px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.tab {
    padding: 10px 20px;
    cursor: pointer;
    color: var(--light-blue-gray);
    transition: all 0.3s ease;
}

.tab.active {
    color: #f0ebff;
    border-bottom: 2px solid var(--purple);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    h2 {
        font-size: 1.5rem;
    }
    h3 {
        font-size: 1.2rem;
    }
    .section {
        padding: 20px;
    }
    .tabs {
        flex-direction: column;
        border-bottom: none;
    }
    .tab {
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    .tab.active {
        border-bottom: 1px solid var(--purple);
    }
}