/* 优化的台湾风格样式表 */
:root {
    /* 主色调 - 温暖而专业的配色 */
    --primary-color: #d73027;
    --primary-light: #ff6b6b;
    --primary-dark: #b71c1c;
    --secondary-color: #1565c0;
    --accent-color: #ff9500;
    --success-color: #2e7d32;
    
    /* 文字颜色 */
    --text-primary: #1a1a1a;
    --text-secondary: #525252;
    --text-muted: #737373;
    --text-white: #ffffff;
    
    /* 背景色 */
    --bg-white: #ffffff;
    --bg-light: #fafafa;
    --bg-warm: #fff8f0;
    --bg-section: #f8fafc;
    
    /* 渐变色 */
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-warm: linear-gradient(135deg, #ff9a9e 0%, #fecfef 50%, #fecfef 100%);
    --gradient-cool: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    --gradient-cta: linear-gradient(180deg, #ff6b6b 0%, #ee5a6f 100%);
    --gradient-accent: linear-gradient(135deg, #ffeaa7 0%, #fab1a0 100%);
    
    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
    --shadow-xl: 0 16px 48px rgba(0,0,0,0.16);
    
    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* 过渡动画 */
    --transition-fast: all 0.15s ease;
    --transition-normal: all 0.25s ease;
    --transition-slow: all 0.4s ease;
    
    /* 间距 */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
    line-height: 1.7;
    color: var(--text-primary);
    overflow-x: hidden;
    background: var(--bg-white);
    font-weight: 400;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* 改进的排版样式 */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Noto Serif TC', serif;
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

p {
    line-height: 1.8;
    margin-bottom: var(--space-md);
    color: var(--text-secondary);
}

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

a:hover {
    color: var(--primary-dark);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    position: relative;
    background: var(--gradient-hero);
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: var(--space-xl) 0;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.hero-video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translateX(-50%) translateY(-50%);
    z-index: 1;
    object-fit: cover;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.75) 0%, rgba(118, 75, 162, 0.75) 100%);
    z-index: 2;
}

.floating-books {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 3;
}

.book {
    position: absolute;
    font-size: 2rem;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.book-1 { top: 10%; left: 10%; animation-delay: 0s; }
.book-2 { top: 20%; right: 15%; animation-delay: 1s; }
.book-3 { bottom: 30%; left: 20%; animation-delay: 2s; }
.book-4 { top: 60%; right: 10%; animation-delay: 3s; }
.book-5 { bottom: 20%; right: 30%; animation-delay: 4s; }

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

.hero-content {
    position: relative;
    z-index: 4;
    text-align: center;
    color: var(--text-white);
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(16px);
    padding: var(--space-xs) var(--space-lg);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-lg);
    border: 1px solid rgba(255,255,255,0.2);
    box-shadow: var(--shadow-md);
}

.badge-text {
    font-family: 'Noto Serif TC', serif;
    font-weight: 600;
    font-size: 1.1rem;
    letter-spacing: 3px;
    color: var(--text-white);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    margin-bottom: var(--space-lg);
    line-height: 1.2;
}

.title-main {
    display: block;
    font-family: 'Noto Serif TC', serif;
    background: linear-gradient(45deg, #ffffff, #ffd700, #ffffff);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-size: 200% 200%;
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.4rem);
    margin-bottom: var(--space-xl);
    opacity: 0.9;
    line-height: 1.8;
    color: rgba(255,255,255,0.95);
}

.countdown-container {
    margin-bottom: 3rem;
}

.countdown-badge {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: var(--gradient-2);
    padding: 16px 32px;
    border-radius: 50px;
    box-shadow: var(--shadow-medium);
}

.countdown-text {
    font-size: 1rem;
    opacity: 0.9;
}

.countdown-number {
    font-size: 1.8rem;
    font-weight: 700;
    font-family: 'Noto Serif TC', serif;
}

.hero-cta {
    background: var(--gradient-cta);
    color: var(--text-white);
    border: none;
    padding: var(--space-md) var(--space-xl);
    font-size: 1.2rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    transition: var(--transition-normal);
    box-shadow: var(--shadow-lg);
    font-family: 'Noto Sans TC', sans-serif;
    text-transform: none;
    position: relative;
    overflow: hidden;
}

.hero-cta::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: var(--transition-slow);
}

.hero-cta:hover::before {
    left: 100%;
}

.hero-cta:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

.hero-cta:active {
    transform: translateY(0) scale(0.98);
}

.cta-arrow {
    font-size: 1.2rem;
    transition: var(--transition-normal);
}

.hero-cta:hover .cta-arrow {
    transform: translateX(4px);
}

/* Activity Introduction */
.activity-intro {
    padding: var(--space-3xl) 0;
    background: var(--bg-section);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    font-family: 'Noto Serif TC', serif;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--gradient-cta);
    border-radius: var(--radius-sm);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

.intro-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-lg);
}

.intro-card {
    background: var(--bg-white);
    padding: var(--space-xl) var(--space-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    border: 1px solid rgba(0,0,0,0.05);
    position: relative;
    overflow: hidden;
}

.intro-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-cta);
    transform: scaleX(0);
    transition: var(--transition-normal);
}

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

.intro-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(0,0,0,0.1);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
    color: var(--primary-color);
    background: linear-gradient(45deg, var(--primary-color), var(--primary-light));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.card-icon i {
    font-size: 2.5rem;
}

.intro-card h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
    font-family: 'Noto Serif TC', serif;
}

.intro-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* Features Section */
.features {
    padding: var(--space-3xl) 0;
    background: var(--gradient-accent);
}

.feature-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 6rem;
}

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

.feature-item.reverse {
    direction: rtl;
}

.feature-item.reverse > * {
    direction: ltr;
}

.feature-image {
    position: relative;
}

.image-placeholder {
    aspect-ratio: 4/3;
    background: var(--gradient-1);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 4rem;
    text-align: center;
    line-height: 1.2;
    box-shadow: var(--shadow-medium);
}

.feature-content h3 {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-family: 'Noto Serif TC', serif;
}

.feature-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.feature-content ul {
    list-style: none;
}

.feature-content li {
    font-size: 1.1rem;
    line-height: 2;
    color: var(--text-secondary);
    padding-left: 1rem;
}

/* Rules Section */
.rules, .how, .faq {
    padding: var(--space-3xl) 0;
    background: var(--bg-white);
}

.rules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.rule-card {
    background: var(--bg-white);
    padding: var(--space-xl) var(--space-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    border-left: 4px solid var(--primary-color);
    position: relative;
    overflow: hidden;
}

.rule-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-cta);
    transform: scaleY(0);
    transform-origin: bottom;
    transition: var(--transition-normal);
}

.rule-card:hover::before {
    transform: scaleY(1);
}

.rule-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.rule-number {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--space-sm);
    font-family: 'Noto Serif TC', serif;
    background: linear-gradient(45deg, var(--primary-color), var(--primary-light));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.rule-card h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
    font-family: 'Noto Serif TC', serif;
}

.rule-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* Testimonials Section */
.testimonials {
    padding: var(--space-3xl) 0;
    background: var(--bg-section);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: white;
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: -10px;
    left: 20px;
    font-size: 6rem;
    color: var(--primary-color);
    opacity: 0.1;
    font-family: serif;
    line-height: 1;
}

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

.testimonial-content {
    position: relative;
    z-index: 2;
}

.stars {
    display: flex;
    gap: 3px;
    margin-bottom: 1.5rem;
}

.stars i {
    color: #ffd700;
    font-size: 1.2rem;
}

.testimonial-content p {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-info h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
    font-family: 'Noto Serif TC', serif;
}

.author-info span {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* CTA Section */
.cta-section {
    padding: var(--space-3xl) 0;
    background: var(--gradient-cta);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="2" fill="rgba(255,255,255,0.1)"/></svg>') repeat;
    animation: float-pattern 20s linear infinite;
}

@keyframes float-pattern {
    0% { transform: translateY(0); }
    100% { transform: translateY(-100px); }
}

.cta-container {
    position: relative;
    z-index: 2;
}

.cta-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: var(--space-sm);
    font-family: 'Noto Serif TC', serif;
}

.cta-desc {
    font-size: 1.2rem;
    color: rgba(255,255,255,0.9);
    margin-bottom: var(--space-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.main-cta {
    background: white;
    color: var(--primary-color);
    border: none;
    padding: 20px 40px;
    font-size: 1.3rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition);
    box-shadow: var(--shadow-medium);
    font-family: 'Noto Sans TC', sans-serif;
}

.main-cta:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-heavy);
}

/* Footer */
.footer {
    background: linear-gradient(135deg, #2c3e50 0%, #3c5d7a 100%);
    color: var(--text-white);
    padding: var(--space-3xl) 0 var(--space-lg);
}

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

.footer-content > div {
    color: var(--text-white);
}

.footer-content h4 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    font-family: 'Noto Serif TC', serif;
    color: var(--text-white);
}

.footer-content p {
    color: rgba(255,255,255,0.85);
    line-height: 1.6;
    margin-bottom: var(--space-sm);
}

.footer-content ul {
    list-style: none;
    padding: 0;
}

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

.footer-content a {
    color: rgba(255,255,255,0.85);
    text-decoration: none;
    transition: var(--transition-fast);
    font-size: 0.95rem;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.2);
    padding-top: var(--space-lg);
    text-align: center;
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
}

/* Fixed CTA Button */
.fixed-cta {
    position: fixed;
    bottom: calc(30px + env(safe-area-inset-bottom, 0px));
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    pointer-events: none;
    width: max-content;
}

.fixed-cta-btn {
    background: var(--gradient-cta);
    color: var(--text-white);
    border: none;
    padding: var(--space-md) var(--space-xl);
    font-size: 1.1rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-xl);
    font-family: 'Noto Sans TC', sans-serif;
    pointer-events: auto;
    text-decoration: none;
    display: block;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.fixed-cta-btn::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: var(--transition-slow);
}

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

.fixed-cta-btn:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 20px 60px rgba(0,0,0,0.25);
    color: var(--text-white);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .title-sub {
        font-size: 1.8rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
    
    .feature-item {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .feature-content h3 {
        font-size: 1.8rem;
    }
    
    .cta-content h2 {
        font-size: 2.2rem;
    }
    
    .intro-grid {
        grid-template-columns: 1fr;
    }
    
    .rules-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 0 15px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .title-sub {
        font-size: 1.5rem;
    }
    
    .hero-cta, .main-cta {
        padding: 16px 32px;
        font-size: 1.1rem;
    }
    
    .fixed-cta-btn {
        padding: 15px 30px;
        font-size: 1rem;
    }
}

/* 优化的通用样式 */
.cta-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text-white);
    background: var(--gradient-cta);
    box-shadow: var(--shadow-lg);
    transition: var(--transition-normal);
    text-decoration: none;
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.cta-link:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: var(--shadow-xl);
    color: var(--text-white);
}

.cta-link:active {
    transform: translateY(0) scale(0.98);
}

.cta-size {
    min-width: 200px;
    max-width: 400px;
}

/* Impact strip 样式 */
.impact-strip {
    background: var(--bg-warm);
    border-top: 1px solid rgba(255, 165, 0, 0.2);
    border-bottom: 1px solid rgba(255, 165, 0, 0.2);
    padding: var(--space-md) 0;
    margin: var(--space-md) 0;
    text-align: center;
    color: #8b4513;
    font-weight: 600;
    font-size: 0.95rem;
}

.impact-strip b {
    color: var(--primary-dark);
    font-weight: 700;
}

/* Impact 卡片样式 */
.impact-grid {
    display: grid;
    gap: var(--space-lg);
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.impact-card {
    background: var(--bg-white);
    border: 1px solid rgba(0,0,0,0.05);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: var(--transition-normal);
}

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

.impact-kpi {
    font-size: 2rem;
    font-weight: 900;
    color: var(--primary-color);
    font-family: 'Noto Serif TC', serif;
}

.impact-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

.impact-progress {
    margin-top: var(--space-md);
    background: var(--bg-light);
    height: 8px;
    border-radius: var(--radius-full);
    overflow: hidden;
    border: 1px solid rgba(0,0,0,0.05);
}

.impact-bar {
    height: 100%;
    width: 0%;
    background: var(--gradient-cta);
    transition: width 1.2s ease-out;
}

.impact-note {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-top: var(--space-sm);
}