/* FORCE REFRESH 08/31/2025 17:06:54 */
/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --primary-color: #3B82F6;
    --primary-hover: #2563EB;
    --secondary-color: #8B5CF6;
    --accent-color: #06B6D4;
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --text-muted: #9CA3AF;
    --bg-primary: #FFFFFF;
    --bg-secondary: #F9FAFB;
    --bg-tertiary: #F3F4F6;
    --border-color: #E5E7EB;
    --border-light: #F3F4F6;
    --success: #10B981;
    --warning: #F59E0B;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --gradient-text: linear-gradient(135deg, #ff6b6b 0%, #4ecdc4 50%, #45b7d1 100%);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-base: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.4);
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-base: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    --font-size-7xl: 4.5rem;
    
    /* Animation */
    --animation-fast: 0.2s ease;
    --animation-base: 0.3s ease;
    --animation-slow: 0.5s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 32px rgba(0, 0, 0, 0.06);
    transition: all var(--animation-base);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-base);
    transition: all var(--animation-base);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    outline: none;
}

.nav-logo:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.3);
}

.nav-logo:hover {
    background: rgba(102, 126, 234, 0.05);
    transform: translateY(-1px);
}

.logo-image {
    width: 36px;
    height: 36px;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(102, 126, 234, 0.3));
    transition: all var(--animation-base);
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    padding: 2px;
}

.logo-image:hover {
    transform: scale(1.1);
    filter: drop-shadow(0 4px 8px rgba(102, 126, 234, 0.4));
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.3);
}

.nav-logo .logo-text {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: var(--space-lg);
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color var(--animation-fast);
    outline: none;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
}

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

/* Buttons */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 10px 20px;
    background: var(--gradient-primary);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-base);
    font-weight: 500;
    transition: all var(--animation-base);
    box-shadow: var(--shadow-base);
    outline: none;
}

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

/* Purchase Buttons */
.btn-purchase {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 10px 20px;
    background: linear-gradient(135deg, #dc3545 0%, #c82333 100%);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-base);
    font-weight: 600;
    transition: all var(--animation-base);
    box-shadow: 0 2px 8px rgba(220, 53, 69, 0.3);
    outline: none;
    border: none;
}

.btn-purchase:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(220, 53, 69, 0.4);
    background: linear-gradient(135deg, #c82333 0%, #a71e2a 100%);
}

.btn-purchase-primary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 14px 24px;
    background: linear-gradient(135deg, #dc3545 0%, #c82333 100%);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-base);
    font-weight: 600;
    transition: all var(--animation-base);
    width: 100%;
    justify-content: center;
    outline: none;
    box-shadow: 0 4px 12px rgba(220, 53, 69, 0.3);
}

.btn-purchase-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(220, 53, 69, 0.5);
    background: linear-gradient(135deg, #c82333 0%, #a71e2a 100%);
}

.btn-hero-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px !important;
    padding: 16px 32px;
    background: var(--gradient-primary);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-lg);
    font-weight: 600;
    transition: all var(--animation-base);
    box-shadow: var(--shadow-lg);
    outline: none;
}

.btn-hero-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
    background: linear-gradient(135deg, #5a75eb 0%, #6d5bad 100%);
}

.btn-hero-secondary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 16px 32px;
    background: white;
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-lg);
    font-weight: 600;
    border: 2px solid var(--border-color);
    transition: all var(--animation-base);
    outline: none;
}

.btn-hero-secondary:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px) scale(1.02);
    box-shadow: var(--shadow-lg);
    background: rgba(102, 126, 234, 0.05);
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    margin-top: -70px; /* 鍚戜笂寤朵几瑕嗙洊瀵艰埅鏍忛珮搴?*/
    padding-top: 70px; /* 涓哄鑸爮鐣欏嚭绌洪棿 */
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: -70px; /* 鑳屾櫙寤朵几鍒伴閮?*/
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}

.hero-background::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(102, 126, 234, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(102, 126, 234, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.5;
    animation: gridMove 30s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.gradient-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(135deg, rgba(102, 126, 234, 0.08) 0%, rgba(118, 75, 162, 0.06) 25%, rgba(240, 147, 251, 0.04) 50%, rgba(6, 182, 212, 0.06) 75%, rgba(16, 185, 129, 0.04) 100%);
    animation: gradientShift 15s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% {
        background: linear-gradient(135deg, rgba(102, 126, 234, 0.08) 0%, rgba(118, 75, 162, 0.06) 25%, rgba(240, 147, 251, 0.04) 50%, rgba(6, 182, 212, 0.06) 75%, rgba(16, 185, 129, 0.04) 100%);
    }
    50% {
        background: linear-gradient(135deg, rgba(16, 185, 129, 0.06) 0%, rgba(6, 182, 212, 0.08) 25%, rgba(102, 126, 234, 0.04) 50%, rgba(240, 147, 251, 0.06) 75%, rgba(118, 75, 162, 0.04) 100%);
    }
}

.hero-particles {
    position: absolute;
    top: -70px; /* 绮掑瓙鏁堟灉涔熷欢浼稿埌椤堕儴 */
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.12) 0%, transparent 60%),
        radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.08) 0%, transparent 55%),
        radial-gradient(circle at 40% 80%, rgba(6, 182, 212, 0.1) 0%, transparent 65%),
        radial-gradient(circle at 70% 70%, rgba(240, 147, 251, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 30% 20%, rgba(16, 185, 129, 0.05) 0%, transparent 45%);
    animation: float 25s ease-in-out infinite;
}

.hero-particles::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 60% 40%, rgba(102, 126, 234, 0.03) 0%, transparent 40%),
        radial-gradient(circle at 10% 80%, rgba(139, 92, 246, 0.04) 0%, transparent 50%);
    animation: float 30s ease-in-out infinite reverse;
}

.hero-decoration {
    position: absolute;
    top: -70px; /* 瑁呴グ灞備篃寤朵几鍒伴閮?*/
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(45deg, transparent 30%, rgba(102, 126, 234, 0.02) 50%, transparent 70%),
        linear-gradient(-45deg, transparent 30%, rgba(139, 92, 246, 0.02) 50%, transparent 70%);
    animation: decorationMove 20s linear infinite;
}

@keyframes decorationMove {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-20px) rotate(1deg); }
    66% { transform: translateY(10px) rotate(-1deg); }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    width: 100%;
    position: relative;
}

.hero-floating-elements {
    position: absolute;
    top: -70px; /* 娴鍏冪礌涔熷欢浼稿埌椤堕儴 */
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 0;
}

.floating-shape {
    position: absolute;
    border-radius: var(--radius-base);
    opacity: 0.15;
    animation: floatRectangle 20s ease-in-out infinite;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(1px);
    transition: all 0.3s ease;
}

.floating-shape:hover {
    opacity: 0.25;
    transform: scale(1.05);
}

/* 宸︿晶瑁呴グ鍖哄煙瀹瑰櫒 */
.left-decoration {
    position: absolute;
    top: 0;
    left: 0;
    width: 35%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    background: linear-gradient(90deg, 
        rgba(255, 255, 255, 0.02) 0%, 
        rgba(255, 255, 255, 0.01) 70%, 
        transparent 100%);
}

.left-decoration::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 40%, 
        rgba(102, 126, 234, 0.03) 0%, 
        transparent 50%);
    pointer-events: none;
}

.left-decoration::after {
    content: '';
    position: absolute;
    top: 10%;
    bottom: 10%;
    right: 0;
    width: 1px;
    background: linear-gradient(180deg, 
        transparent 0%, 
        rgba(255, 255, 255, 0.05) 50%, 
        transparent 100%);
    pointer-events: none;
}

/* 淇勭綏鏂柟鍧楀紡鎺掓枡鍔ㄧ敾瀹瑰櫒 */
.tetris-container {
    position: absolute;
    top: 15%;
    left: 15%;
    width: 180px;
    height: 350px;
    pointer-events: none;
    z-index: 1;
}

/* 淇勭綏鏂柟鍧楁鏋?*/
.tetris-frame {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    background: linear-gradient(180deg, 
        rgba(255, 255, 255, 0.01) 0%, 
        rgba(255, 255, 255, 0.03) 50%, 
        rgba(255, 255, 255, 0.01) 100%);
    backdrop-filter: blur(1px);
    animation: frameGlow 8s ease-in-out infinite;
}

/* 鍒嗗垪鎸囩ず绾?*/
.tetris-frame::after {
    content: '';
    position: absolute;
    top: 10%;
    bottom: 10%;
    left: 50%;
    width: 1px;
    background: linear-gradient(180deg, 
        transparent 0%, 
        rgba(255, 255, 255, 0.03) 50%, 
        transparent 100%);
    transform: translateX(-50%);
}

@keyframes frameGlow {
    0%, 100% { 
        border-color: rgba(255, 255, 255, 0.05);
        box-shadow: inset 0 0 15px rgba(255, 255, 255, 0.02);
    }
    50% { 
        border-color: rgba(102, 126, 234, 0.08);
        box-shadow: inset 0 0 20px rgba(102, 126, 234, 0.04);
    }
}

/* 鎺夎惤鐨勭煩褰㈡柟鍧?*/
.falling-block {
    position: absolute;
    border-radius: var(--radius-sm);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: all 0.3s ease;
}

.falling-block::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 2px;
    height: 2px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    animation: sparkle 4s ease-in-out infinite;
}

@keyframes sparkle {
    0%, 100% { 
        opacity: 0; 
        transform: translate(-50%, -50%) scale(0.5);
    }
    50% { 
        opacity: 1; 
        transform: translate(-50%, -50%) scale(1.2);
    }
}

/* 宸﹀垪鎺夎惤鏂瑰潡 */
.block-1 {
    width: 70px;
    height: 30px;
    left: 20px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.25) 0%, rgba(118, 75, 162, 0.25) 100%);
    animation: dropLeftColumn1 15s ease-in-out infinite;
}

.block-2 {
    width: 65px;
    height: 25px;
    left: 20px;
    background: linear-gradient(135deg, rgba(67, 233, 123, 0.25) 0%, rgba(56, 249, 215, 0.25) 100%);
    animation: dropLeftColumn2 15s ease-in-out infinite;
    animation-delay: 3s;
}

.block-3 {
    width: 60px;
    height: 35px;
    left: 20px;
    background: linear-gradient(135deg, rgba(240, 147, 251, 0.25) 0%, rgba(245, 87, 108, 0.25) 100%);
    animation: dropLeftColumn3 15s ease-in-out infinite;
    animation-delay: 6s;
}

/* 鍙冲垪鎺夎惤鏂瑰潡 */
.block-4 {
    width: 75px;
    height: 28px;
    left: 105px;
    background: linear-gradient(135deg, rgba(250, 112, 154, 0.25) 0%, rgba(254, 225, 64, 0.25) 100%);
    animation: dropRightColumn1 15s ease-in-out infinite;
    animation-delay: 1.5s;
}

.block-5 {
    width: 68px;
    height: 32px;
    left: 105px;
    background: linear-gradient(135deg, rgba(79, 172, 254, 0.25) 0%, rgba(0, 242, 254, 0.25) 100%);
    animation: dropRightColumn2 15s ease-in-out infinite;
    animation-delay: 4.5s;
}

/* 绗簩杞帀钀芥柟鍧?- 缁х画鍙屽垪鍫嗗彔 */
.block-6 {
    width: 72px;
    height: 28px;
    left: 20px;
    background: linear-gradient(135deg, rgba(168, 237, 234, 0.25) 0%, rgba(254, 214, 227, 0.25) 100%);
    animation: dropLeftColumn4 15s ease-in-out infinite;
    animation-delay: 9s;
}

.block-7 {
    width: 70px;
    height: 30px;
    left: 105px;
    background: linear-gradient(135deg, rgba(255, 236, 210, 0.25) 0%, rgba(252, 182, 159, 0.25) 100%);
    animation: dropRightColumn3 15s ease-in-out infinite;
    animation-delay: 7.5s;
}

.block-8 {
    width: 63px;
    height: 26px;
    left: 105px;
    background: linear-gradient(135deg, rgba(161, 140, 209, 0.25) 0%, rgba(251, 194, 235, 0.25) 100%);
    animation: dropRightColumn4 15s ease-in-out infinite;
    animation-delay: 12s;
}

/* 宸插爢鍙犵殑鍩虹鐭╁舰 - 鍙屽垪甯冨眬 */
.stacked-blocks {
    position: absolute;
    bottom: 20px;
    left: 0;
    width: 100%;
    animation: stackFade 15s ease-in-out infinite;
}

.stacked-block {
    position: absolute;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.4;
    transition: opacity 0.5s ease;
}

/* 宸﹀垪鍩虹鍫嗗彔 */
.stack-1 {
    width: 70px;
    height: 25px;
    bottom: 0;
    left: 20px;
    background: linear-gradient(135deg, rgba(168, 237, 234, 0.2) 0%, rgba(254, 214, 227, 0.2) 100%);
}

.stack-2 {
    width: 65px;
    height: 20px;
    bottom: 30px;
    left: 20px;
    background: linear-gradient(135deg, rgba(255, 236, 210, 0.2) 0%, rgba(252, 182, 159, 0.2) 100%);
}

/* 鍙冲垪鍩虹鍫嗗彔 */
.stack-3 {
    width: 75px;
    height: 22px;
    bottom: 0;
    left: 105px;
    background: linear-gradient(135deg, rgba(161, 140, 209, 0.2) 0%, rgba(251, 194, 235, 0.2) 100%);
}

.stack-4 {
    width: 68px;
    height: 18px;
    bottom: 27px;
    left: 105px;
    background: linear-gradient(135deg, rgba(255, 154, 158, 0.2) 0%, rgba(254, 207, 239, 0.2) 100%);
}

/* 鍫嗗彔娣″寲鍔ㄧ敾 - 鍫嗘弧閲嶇疆鏁堟灉 */
@keyframes stackFade {
    0%, 75% { 
        opacity: 1;
        transform: scale(1);
    }
    80% { 
        opacity: 0.8;
        transform: scale(1.02);
    }
    85% { 
        opacity: 0.5;
        transform: scale(1);
    }
    90% { 
        opacity: 0.2;
        transform: scale(0.98);
    }
    95%, 100% { 
        opacity: 0;
        transform: scale(0.95);
    }
}

/* 鍙充晶鐭╁舰缇?*/
.shape-5 {
    width: 130px;
    height: 75px;
    top: 20%;
    right: 6%;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    animation-delay: 12s;
}

.shape-6 {
    width: 110px;
    height: 65px;
    top: 50%;
    right: 3%;
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    animation-delay: 20s;
}

.shape-7 {
    width: 95px;
    height: 55px;
    top: 80%;
    right: 10%;
    background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
    animation-delay: 6s;
}

.shape-8 {
    width: 85px;
    height: 50px;
    top: 35%;
    right: 18%;
    background: linear-gradient(135deg, #a18cd1 0%, #fbc2eb 100%);
    animation-delay: 14s;
}

/* 棰濆鐨勫皬鐭╁舰瑁呴グ */
.shape-9 {
    width: 70px;
    height: 40px;
    top: 60%;
    left: 20%;
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
    animation-delay: 22s;
    transform: rotate(15deg);
}

.shape-10 {
    width: 60px;
    height: 35px;
    top: 85%;
    right: 25%;
    background: linear-gradient(135deg, #a1c4fd 0%, #c2e9fb 100%);
    animation-delay: 26s;
    transform: rotate(-10deg);
}

.shape-11 {
    width: 80px;
    height: 45px;
    top: 5%;
    left: 25%;
    background: linear-gradient(135deg, #d299c2 0%, #fef9d7 100%);
    animation-delay: 30s;
    transform: rotate(8deg);
}

.shape-12 {
    width: 65px;
    height: 38px;
    top: 12%;
    right: 30%;
    background: linear-gradient(135deg, #89f7fe 0%, #66a6ff 100%);
    animation-delay: 34s;
    transform: rotate(-12deg);
}

/* 涓や晶鍋忎笅浣嶇疆鐨勬柊娴鐭╁舰 */
.shape-13 {
    width: 90px;
    height: 55px;
    top: 75%;
    left: 8%;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    animation-delay: 40s;
    transform: rotate(18deg);
}

.shape-14 {
    width: 75px;
    height: 45px;
    top: 88%;
    right: 12%;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    animation-delay: 45s;
    transform: rotate(-22deg);
}

.shape-15 {
    width: 105px;
    height: 60px;
    top: 78%;
    left: 25%;
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    animation-delay: 38s;
    transform: rotate(12deg);
}

.shape-16 {
    width: 85px;
    height: 50px;
    top: 92%;
    right: 35%;
    background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
    animation-delay: 42s;
    transform: rotate(-15deg);
}

.shape-17 {
    width: 70px;
    height: 42px;
    top: 85%;
    left: 15%;
    background: linear-gradient(135deg, #a18cd1 0%, #fbc2eb 100%);
    animation-delay: 48s;
    transform: rotate(25deg);
}

.shape-18 {
    width: 95px;
    height: 58px;
    top: 82%;
    right: 8%;
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
    animation-delay: 36s;
    transform: rotate(-8deg);
}

/* 宸︿晶娴鐭╁舰瑁呴グ鐭╁舰 */
.left-float-1 {
    width: 120px;
    height: 70px;
    top: 8%;
    left: 2%;
    background: linear-gradient(135deg, rgba(103, 117, 236, 0.15) 0%, rgba(139, 92, 246, 0.15) 100%);
    animation: floatRectangle 18s ease-in-out infinite;
    animation-delay: 2s;
}

.left-float-2 {
    width: 90px;
    height: 55px;
    top: 35%;
    left: 1%;
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.15) 0%, rgba(6, 182, 212, 0.15) 100%);
    animation: floatRectangle 22s ease-in-out infinite;
    animation-delay: 7s;
}

.left-float-3 {
    width: 110px;
    height: 65px;
    top: 65%;
    left: 3%;
    background: linear-gradient(135deg, rgba(251, 146, 60, 0.15) 0%, rgba(252, 211, 77, 0.15) 100%);
    animation: floatRectangle 20s ease-in-out infinite;
    animation-delay: 12s;
}

.left-float-4 {
    width: 85px;
    height: 50px;
    top: 85%;
    left: 15%;
    background: linear-gradient(135deg, rgba(236, 72, 153, 0.15) 0%, rgba(244, 114, 182, 0.15) 100%);
    animation: floatRectangle 16s ease-in-out infinite;
    animation-delay: 5s;
}

.left-float-5 {
    width: 95px;
    height: 45px;
    top: 5%;
    left: 35%;
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.15) 0%, rgba(192, 132, 252, 0.15) 100%);
    animation: floatRectangle 24s ease-in-out infinite;
    animation-delay: 15s;
}

.left-float-6 {
    width: 75px;
    height: 40px;
    top: 75%;
    left: 32%;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.12) 0%, rgba(59, 130, 246, 0.12) 100%);
    animation: floatRectangle 19s ease-in-out infinite;
    animation-delay: 8s;
}

.left-float-7 {
    width: 65px;
    height: 35px;
    top: 45%;
    left: 38%;
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.12) 0%, rgba(248, 113, 113, 0.12) 100%);
    animation: floatRectangle 17s ease-in-out infinite;
    animation-delay: 11s;
}

.left-float-8 {
    width: 55px;
    height: 30px;
    top: 3%;
    left: 15%;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.12) 0%, rgba(52, 211, 153, 0.12) 100%);
    animation: floatRectangle 21s ease-in-out infinite;
    animation-delay: 18s;
}

/* 澶栧洿灏忚楗扮煩褰?*/
.left-mini-1 {
    width: 45px;
    height: 25px;
    top: 25%;
    left: 0.5%;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.08) 0%, rgba(168, 85, 247, 0.08) 100%);
    animation: floatRectangle 25s ease-in-out infinite;
    animation-delay: 20s;
    transform: rotate(12deg);
}

.left-mini-2 {
    width: 40px;
    height: 22px;
    top: 55%;
    left: 30%;
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.08) 0%, rgba(16, 185, 129, 0.08) 100%);
    animation: floatRectangle 23s ease-in-out infinite;
    animation-delay: 25s;
    transform: rotate(-8deg);
}

.left-mini-3 {
    width: 38px;
    height: 20px;
    top: 90%;
    left: 5%;
    background: linear-gradient(135deg, rgba(251, 146, 60, 0.08) 0%, rgba(249, 115, 22, 0.08) 100%);
    animation: floatRectangle 27s ease-in-out infinite;
    animation-delay: 30s;
    transform: rotate(6deg);
}

/* 鏉愭枡鐗囩壒娈婃晥鏋?*/
.floating-shape::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
    border-radius: inherit;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.floating-shape:hover::before {
    opacity: 1;
}

@keyframes floatRectangle {
    0%, 100% { 
        transform: translate(0, 0) rotate(0deg) scale(1); 
        opacity: 0.15;
    }
    20% { 
        transform: translate(15px, -15px) rotate(5deg) scale(1.05);
        opacity: 0.2; 
    }
    40% { 
        transform: translate(-8px, -25px) rotate(-3deg) scale(0.95);
        opacity: 0.1; 
    }
    60% { 
        transform: translate(-18px, 8px) rotate(7deg) scale(1.1);
        opacity: 0.18; 
    }
    80% { 
        transform: translate(12px, 18px) rotate(-5deg) scale(0.9);
        opacity: 0.12; 
    }
}

/* 淇勭綏鏂柟鍧楁帀钀藉姩鐢?*/
/* 宸﹀垪绮剧鍫嗗彔鍔ㄧ敾 */
@keyframes dropLeftColumn1 {
    0% { 
        top: -50px; 
        opacity: 0; 
        transform: translateX(0);
    }
    5% { 
        opacity: 0.4; 
        transform: translateX(0);
    }
    25% { 
        top: 340px; /* 搴曢儴绗簩灞備綅缃?*/
        transform: translateX(0);
    }
    30% { 
        top: 340px; 
        transform: translateX(0) scale(1.02);
    }
    35% { 
        transform: translateX(0) scale(1);
    }
    85% { 
        top: 340px; 
        opacity: 0.4;
    }
    90% { 
        opacity: 0.2;
    }
    95%, 100% { 
        top: 340px; 
        opacity: 0;
    }
}

@keyframes dropLeftColumn2 {
    0% { 
        top: -50px; 
        opacity: 0; 
        transform: translateX(0);
    }
    5% { 
        opacity: 0.4; 
        transform: translateX(0);
    }
    25% { 
        top: 310px; /* 绗簩灞傜簿纭綅缃?*/
        transform: translateX(0);
    }
    30% { 
        top: 310px; 
        transform: translateX(0) scale(1.02);
    }
    35% { 
        transform: translateX(0) scale(1);
    }
    85% { 
        top: 310px; 
        opacity: 0.4;
    }
    90% { 
        opacity: 0.2;
    }
    95%, 100% { 
        top: 310px; 
        opacity: 0;
    }
}

@keyframes dropLeftColumn3 {
    0% { 
        top: -50px; 
        opacity: 0; 
        transform: translateX(0);
    }
    5% { 
        opacity: 0.6; 
        transform: translateX(0);
    }
    25% { 
        top: 275px; /* 绗笁灞傜簿纭綅缃?*/
        transform: translateX(0);
    }
    30% { 
        top: 275px; 
        transform: translateX(0) scale(1.02);
    }
    35% { 
        transform: translateX(0) scale(1);
    }
    85% { 
        top: 275px; 
        opacity: 0.6;
    }
    90% { 
        opacity: 0.3;
    }
    95%, 100% { 
        top: 275px; 
        opacity: 0;
    }
}

/* 鍙冲垪绮剧鍫嗗彔鍔ㄧ敾 */
@keyframes dropRightColumn1 {
    0% { 
        top: -50px; 
        opacity: 0; 
        transform: translateX(0);
    }
    5% { 
        opacity: 0.6; 
        transform: translateX(0);
    }
    25% { 
        top: 342px; /* 搴曢儴绗簩灞備綅缃紙绋嶅井閿欏紑锛?*/
        transform: translateX(0);
    }
    30% { 
        top: 342px; 
        transform: translateX(0) scale(1.02);
    }
    35% { 
        transform: translateX(0) scale(1);
    }
    85% { 
        top: 342px; 
        opacity: 0.6;
    }
    90% { 
        opacity: 0.3;
    }
    95%, 100% { 
        top: 342px; 
        opacity: 0;
    }
}

@keyframes dropRightColumn2 {
    0% { 
        top: -50px; 
        opacity: 0; 
        transform: translateX(0);
    }
    5% { 
        opacity: 0.6; 
        transform: translateX(0);
    }
    25% { 
        top: 310px; /* 绗簩灞傜簿纭綅缃?*/
        transform: translateX(0);
    }
    30% { 
        top: 310px; 
        transform: translateX(0) scale(1.02);
    }
    35% { 
        transform: translateX(0) scale(1);
    }
    85% { 
        top: 310px; 
        opacity: 0.6;
    }
    90% { 
        opacity: 0.3;
    }
    95%, 100% { 
        top: 310px; 
        opacity: 0;
    }
}

/* 绗簩杞爢鍙犲姩鐢?- 鍫嗘洿楂?*/
@keyframes dropLeftColumn4 {
    0% { 
        top: -50px; 
        opacity: 0; 
        transform: translateX(0);
    }
    5% { 
        opacity: 0.6; 
        transform: translateX(0);
    }
    25% { 
        top: 240px; /* 绗洓灞傜簿纭綅缃?*/
        transform: translateX(0);
    }
    30% { 
        top: 240px; 
        transform: translateX(0) scale(1.02);
    }
    35% { 
        transform: translateX(0) scale(1);
    }
    85% { 
        top: 240px; 
        opacity: 0.6;
    }
    90% { 
        opacity: 0.3;
    }
    95%, 100% { 
        top: 240px; 
        opacity: 0;
    }
}

@keyframes dropRightColumn3 {
    0% { 
        top: -50px; 
        opacity: 0; 
        transform: translateX(0);
    }
    5% { 
        opacity: 0.6; 
        transform: translateX(0);
    }
    25% { 
        top: 280px; /* 绗笁灞傜簿纭綅缃?*/
        transform: translateX(0);
    }
    30% { 
        top: 280px; 
        transform: translateX(0) scale(1.02);
    }
    35% { 
        transform: translateX(0) scale(1);
    }
    85% { 
        top: 280px; 
        opacity: 0.6;
    }
    90% { 
        opacity: 0.3;
    }
    95%, 100% { 
        top: 280px; 
        opacity: 0;
    }
}

@keyframes dropRightColumn4 {
    0% { 
        top: -50px; 
        opacity: 0; 
        transform: translateX(0);
    }
    5% { 
        opacity: 0.6; 
        transform: translateX(0);
    }
    25% { 
        top: 248px; /* 绗洓灞傜簿纭綅缃?*/
        transform: translateX(0);
    }
    30% { 
        top: 248px; 
        transform: translateX(0) scale(1.02);
    }
    35% { 
        transform: translateX(0) scale(1);
    }
    85% { 
        top: 248px; 
        opacity: 0.6;
    }
    90% { 
        opacity: 0.3;
    }
    95%, 100% { 
        top: 248px; 
        opacity: 0;
    }
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    padding: var(--space-3xl) 0;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-sm) var(--space-xl);
    background: rgba(102, 126, 234, 0.1);
    border: 1px solid rgba(102, 126, 234, 0.2);
    border-radius: var(--radius-2xl);
    color: var(--primary-color);
    font-size: var(--font-size-sm);
    font-weight: 600;
    letter-spacing: 0.03em;
    margin-bottom: var(--space-xl);
    backdrop-filter: blur(10px);
    animation: badgeGlow 3s ease-in-out infinite;
    white-space: nowrap;
    max-width: 90%;
}

@keyframes badgeGlow {
    0%, 100% { box-shadow: 0 0 20px rgba(102, 126, 234, 0.2); }
    50% { box-shadow: 0 0 30px rgba(102, 126, 234, 0.4); }
}

.hero-title {
    font-size: var(--font-size-7xl);
    font-weight: 800;
    line-height: 1.05;
    margin-bottom: var(--space-xl);
    color: var(--text-primary);
    letter-spacing: -0.02em;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
}

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

.hero-subtitle {
    font-size: var(--font-size-2xl);
    color: var(--text-secondary);
    margin-bottom: var(--space-3xl);
    line-height: 1.5;
    font-weight: 400;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: var(--space-3xl);
}

.hero-cta {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
    margin-bottom: var(--space-3xl);
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
    flex-wrap: nowrap;
    margin-top: var(--space-2xl);
    padding: var(--space-xl) var(--space-xl);
    background: rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-2xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow-lg);
}

.stat-item {
    text-align: center;
    padding: var(--space-sm);
    border-radius: var(--radius-lg);
    transition: all var(--animation-base);
    flex: 1;
    max-width: 300px;
    min-width: 200px;
}

.stat-item:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.1);
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    margin-bottom: var(--space-xs);
    letter-spacing: 0.02em;
    text-align: center;
}

.stat-label {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-xs);
}

.stat-description {
    color: var(--text-tertiary);
    font-size: var(--font-size-xs);
    font-weight: 400;
    line-height: 1.4;
    text-transform: none;
    letter-spacing: 0;
    opacity: 0.8;
    word-wrap: break-word;
    hyphens: auto;
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
}

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

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: white;
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-base);
    transition: all var(--animation-base);
    border: 1px solid var(--border-light);
}

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

.feature-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-lg);
    color: white;
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

.feature-description strong {
    color: var(--primary-color);
    font-weight: 600;
    margin-right: var(--space-xs);
}

.feature-description br {
    margin-bottom: var(--space-xs);
}

/* CNC Highlight Card */
.cnc-highlight {
    background: linear-gradient(135deg, rgba(68, 76, 231, 0.05) 0%, rgba(68, 76, 231, 0.1) 100%);
    border: 2px solid var(--primary-color);
    position: relative;
    overflow: hidden;
}

.cnc-highlight::before {
    content: 'CNC\4E13\5C5E';
    position: absolute;
    top: var(--space-md);
    right: -var(--space-lg);
    background: var(--gradient-primary);
    color: white;
    padding: var(--space-xs) var(--space-2xl);
    font-size: var(--font-size-xs);
    font-weight: 600;
    transform: rotate(35deg);
    z-index: 1;
}

.cnc-highlight .feature-icon {
    background: var(--gradient-primary);
    box-shadow: var(--shadow-lg);
}

/* Demo Section */
.demo-intro {
    padding: var(--space-3xl) 0 var(--space-2xl) 0;
    background: var(--bg-secondary);
}

.demo-section {
    padding: var(--space-3xl) 0;
    position: relative;
}

.core-demo {
    background: linear-gradient(135deg, rgba(68, 76, 231, 0.03) 0%, rgba(68, 76, 231, 0.08) 100%);
}

.material-demo {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.03) 0%, rgba(16, 185, 129, 0.08) 100%);
}

.analysis-demo {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.03) 0%, rgba(139, 92, 246, 0.08) 100%);
}

.label-demo {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.03) 0%, rgba(245, 158, 11, 0.08) 100%);
}

.operator-demo {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.03) 0%, rgba(6, 182, 212, 0.08) 100%);
}

/* Demo Layout */
.demo-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.demo-layout.reverse {
    direction: rtl;
}

.demo-layout.reverse > * {
    direction: ltr;
}

/* Demo Content */
.demo-content {
    padding: var(--space-xl);
}

.demo-badge {
    display: inline-flex;
    align-items: center;
    background: var(--gradient-primary);
    color: white;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--space-lg);
    box-shadow: var(--shadow-md);
}

.demo-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-xl);
    line-height: 1.2;
}

.demo-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.demo-feature-item {
    display: flex;
    gap: var(--space-lg);
    align-items: flex-start;
}

.feature-icon-sm {
    width: 40px;
    height: 40px;
    background: var(--gradient-accent);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
    margin-top: var(--space-xs);
}

.demo-feature-item h5 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.demo-feature-item p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* Demo Gallery */
.demo-gallery {
    position: relative;
}

.gallery-main {
    position: relative;
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    height: 400px; /* Fixed height */
    cursor: pointer;
    transition: all var(--animation-base);
}

.gallery-main:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.gallery-main-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all var(--animation-base);
}

.gallery-main:hover .gallery-main-image {
    transform: scale(1.05);
}

.image-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
    padding: var(--space-lg);
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--animation-base);
}

.gallery-main:hover .image-overlay {
    opacity: 1;
    transform: translateY(0);
}

.image-overlay h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.image-overlay p {
    font-size: var(--font-size-sm);
    opacity: 0.9;
    line-height: 1.4;
    margin: 0;
}

.zoom-icon {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    opacity: 0;
    transform: scale(0.8);
    transition: all var(--animation-base);
}

.gallery-main:hover .zoom-icon {
    opacity: 1;
    transform: scale(1);
}

/* Gallery Side Navigation */
.gallery-nav-side {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(0, 0, 0, 0.5);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all var(--animation-base);
    z-index: 10;
}

.gallery-nav-prev {
    left: var(--space-lg);
}

.gallery-nav-next {
    right: var(--space-lg);
}

.gallery-main:hover .gallery-nav-side {
    opacity: 1;
}

.gallery-nav-side:hover {
    background: rgba(0, 0, 0, 0.7);
    transform: translateY(-50%) scale(1.1);
}

.gallery-nav-side:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    transform: translateY(-50%);
}

.gallery-nav-side:disabled:hover {
    background: rgba(0, 0, 0, 0.5);
    transform: translateY(-50%);
}

/* Gallery Navigation */
.gallery-nav {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
    flex-wrap: wrap;
}

.gallery-nav-btn {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: none;
    background: rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: all var(--animation-base);
    position: relative;
}

.gallery-nav-btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: transparent;
    transition: all var(--animation-base);
}

.gallery-nav-btn:hover {
    background: rgba(0, 0, 0, 0.3);
    transform: scale(1.2);
}

.gallery-nav-btn.active {
    background: var(--primary-color);
}

.gallery-nav-btn.active::after {
    background: white;
}

/* Gallery Counter */
.gallery-counter {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: var(--space-md);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.counter-info {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.gallery-controls {
    display: flex;
    gap: var(--space-xs);
}

.gallery-control-btn {
    width: 32px;
    height: 32px;
    border: 1px solid var(--border-light);
    background: white;
    border-radius: var(--radius-base);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--animation-base);
    color: var(--text-secondary);
}

.gallery-control-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: scale(1.1);
}

.gallery-control-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    transform: none;
}

/* Modal for fullscreen view */
.image-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--animation-base);
    backdrop-filter: blur(10px);
}

.image-modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-2xl);
}

.modal-image {
    width: 100%;
    height: auto;
    display: block;
    max-height: 80vh;
    object-fit: contain;
}

.modal-info {
    padding: var(--space-lg);
    text-align: center;
}

.modal-info h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.modal-info p {
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0;
}

.modal-close {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    width: 40px;
    height: 40px;
    background: rgba(0, 0, 0, 0.8);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--animation-base);
}

.modal-close:hover {
    background: rgba(0, 0, 0, 0.9);
    transform: scale(1.1);
}

/* Modal Navigation */
.modal-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 60px;
    height: 60px;
    background: rgba(0, 0, 0, 0.6);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--animation-base);
    z-index: 10;
}

.modal-nav-prev {
    left: var(--space-lg);
}

.modal-nav-next {
    right: var(--space-lg);
}

.modal-nav:hover {
    background: rgba(0, 0, 0, 0.8);
    transform: translateY(-50%) scale(1.1);
}

.modal-nav:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    transform: translateY(-50%);
}

.modal-nav:disabled:hover {
    background: rgba(0, 0, 0, 0.6);
    transform: translateY(-50%);
}

/* Industries Section */
.industries {
    padding: var(--space-3xl) 0;
    background: white;
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.industry-card {
    background: white;
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-base);
    border: 1px solid var(--border-light);
    transition: all var(--animation-base);
    text-align: center;
}

.industry-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.industry-icon {
    font-size: 3rem;
    margin-bottom: var(--space-lg);
    display: block;
}

.industry-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.industry-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.cnc-benefit {
    display: block;
    margin-top: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: linear-gradient(135deg, rgba(68, 76, 231, 0.05) 0%, rgba(68, 76, 231, 0.1) 100%);
    border-radius: var(--radius-base);
    font-weight: 500;
    color: var(--primary-color);
    font-size: var(--font-size-sm);
}

.industries-slogan {
    text-align: center;
    margin-top: var(--space-3xl);
    padding: var(--space-xl);
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.industries-slogan p {
    font-size: var(--font-size-lg);
    font-weight: 500;
    margin: 0;
}

/* CNC Integration Section */
.cnc-integration {
    padding: var(--space-3xl) 0;
    background: linear-gradient(135deg, rgba(68, 76, 231, 0.03) 0%, rgba(68, 76, 231, 0.08) 100%);
}

.cnc-content {
    max-width: 1200px;
    margin: 0 auto;
}

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

.cnc-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
}

.cnc-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin: 0;
}

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

.cnc-feature {
    background: white;
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-base);
    border: 1px solid var(--border-light);
    transition: all var(--animation-base);
}

.cnc-feature:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}

.cnc-feature-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-lg) auto;
    color: white;
}

.cnc-feature h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.cnc-feature p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* Section Specific Styling - No divider lines */

/* Responsive Design */
@media (max-width: 1024px) {
    .demo-layout {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
        text-align: center;
    }
    
    .demo-layout.reverse {
        direction: ltr;
    }
    
    .demo-content {
        order: 2;
    }
    
    .demo-gallery {
        order: 1;
    }
    
    .demo-layout.reverse .demo-content {
        order: 1;
    }
    
    .demo-layout.reverse .demo-gallery {
        order: 2;
    }
}

@media (max-width: 768px) {
    .demo-section {
        padding: var(--space-2xl) 0;
    }
    
    .demo-layout {
        gap: var(--space-xl);
    }
    
    .demo-content {
        padding: var(--space-lg);
    }
    
    .demo-title {
        font-size: var(--font-size-2xl);
    }
    
    .demo-features {
        gap: var(--space-lg);
    }
    
    .demo-feature-item {
        gap: var(--space-md);
        flex-direction: column;
        text-align: center;
    }
    
    .feature-icon-sm {
        margin: 0 auto;
    }
    
    .gallery-main {
        height: 280px;
    }
    
    .gallery-nav {
        justify-content: center;
        gap: var(--space-xs);
    }
    
    .gallery-nav-btn {
        width: 10px;
        height: 10px;
    }
    
    .gallery-counter {
        flex-direction: column;
        gap: var(--space-sm);
        text-align: center;
    }
    
    .modal-content {
        max-width: 95vw;
        margin: var(--space-md);
    }
    
    .modal-info {
        padding: var(--space-md);
    }
    
    .gallery-nav-side {
        width: 40px;
        height: 40px;
    }
    
    .gallery-nav-prev {
        left: var(--space-sm);
    }
    
    .gallery-nav-next {
        right: var(--space-sm);
    }
    
    .modal-nav {
        width: 50px;
        height: 50px;
    }
    
    .modal-nav-prev {
        left: var(--space-sm);
    }
    
    .modal-nav-next {
        right: var(--space-sm);
    }
    
    /* Industries Section Mobile */
    .industries-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .industry-card {
        padding: var(--space-lg);
    }
    
    .industry-icon {
        font-size: 2.5rem;
    }
    
    .industry-title {
        font-size: var(--font-size-lg);
    }
    
    .industries-slogan {
        margin-top: var(--space-2xl);
        padding: var(--space-lg);
    }
    
    .industries-slogan p {
        font-size: var(--font-size-base);
    }
    
    /* CNC Integration Mobile */
    .cnc-title {
        font-size: var(--font-size-2xl);
    }
    
    .cnc-features {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .cnc-feature {
        padding: var(--space-lg);
    }
    
    .cnc-feature-icon {
        width: 60px;
        height: 60px;
    }
}

/* Download Section */
.download {
    padding: var(--space-3xl) 0;
    background: var(--bg-secondary);
}

.download-content {
    text-align: center;
}

.download-header {
    margin-bottom: var(--space-3xl);
}

.download-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
}

.download-subtitle {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
}

.download-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-2xl);
    margin-bottom: var(--space-3xl);
    justify-content: center;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.download-options .single-download {
    max-width: 400px;
    margin: 0 auto;
}

.download-card {
    background: white;
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-base);
    border: 1px solid var(--border-light);
    position: relative;
    transition: all var(--animation-base);
}

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

.download-card.primary {
    border: 2px solid var(--primary-color);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
}

.download-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    color: white;
    padding: 6px 16px;
    border-radius: var(--radius-base);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.download-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.download-card p {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

.download-version {
    background: var(--bg-tertiary);
    color: var(--text-muted);
    padding: 6px 12px;
    border-radius: var(--radius-base);
    font-size: var(--font-size-sm);
    font-weight: 500;
    display: inline-block;
    margin-bottom: var(--space-lg);
}

.btn-download-primary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 14px 24px;
    background: var(--gradient-primary);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-base);
    font-weight: 600;
    transition: all var(--animation-base);
    width: 100%;
    justify-content: center;
    outline: none;
}

.btn-download-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-download-secondary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 14px 24px;
    background: white;
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--radius-base);
    font-weight: 600;
    border: 2px solid var(--border-color);
    transition: all var(--animation-base);
    width: 100%;
    justify-content: center;
    outline: none;
}

.btn-download-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(102, 126, 234, 0.05);
}

/* Trial Version Styles */
.download-card.trial {
    border: 2px solid #28a745;
    background: linear-gradient(135deg, rgba(40, 167, 69, 0.05) 0%, rgba(34, 197, 94, 0.05) 100%);
}

.trial-badge {
    background: linear-gradient(135deg, #28a745 0%, #22c55e 100%);
}

.btn-download-trial {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 14px 24px;
    background: linear-gradient(135deg, #28a745 0%, #22c55e 100%);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-base);
    font-weight: 600;
    transition: all var(--animation-base);
    width: 100%;
    justify-content: center;
    outline: none;
}

.btn-download-trial:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(40, 167, 69, 0.3);
}

/* Professional Version Styles */
.download-card.professional {
    border: 2px solid var(--primary-color);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.08) 0%, rgba(118, 75, 162, 0.06) 100%);
    position: relative;
}

.download-card.professional::before {
    content: '\63A8\8350';
    position: absolute;
    top: 16px;
    right: 16px;
    background: linear-gradient(135deg, #ff6b6b 0%, #ff8e8e 100%);
    color: white;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.pro-badge {
    background: var(--gradient-primary);
}

/* Version Features */
.version-features,
.version-limits,
.version-requirement {
    margin-bottom: var(--space-lg);
}

.version-features h4,
.version-limits h4,
.version-requirement h4 {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.version-features ul,
.version-limits ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.version-features li,
.version-limits li {
    padding: 4px 0;
    font-size: var(--font-size-sm);
    line-height: 1.4;
}

.version-features li {
    color: #28a745;
    font-weight: 500;
}

.version-limits li {
    color: #ff6b6b;
    font-weight: 400;
}

.version-requirement p {
    margin: 4px 0;
    font-size: var(--font-size-sm);
    line-height: 1.4;
}

.version-requirement p:first-of-type {
    color: #ff8c00;
    font-weight: 500;
}

.version-requirement p:last-of-type {
    color: var(--text-secondary);
}

/* Purchase Info */
.purchase-info {
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-light);
    text-align: center;
}

.purchase-info p {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.purchase-info .contact-link {
    color: #dc3545 !important;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s ease;
    padding: 4px 8px;
    border-radius: 4px;
    border: 1px solid #dc3545;
    display: inline-block;
}

.purchase-info .contact-link:hover {
    color: #fff !important;
    background-color: #dc3545 !important;
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(220, 53, 69, 0.4);
}

/* System Requirements */
.system-requirements {
    background: white;
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-base);
    text-align: left;
    max-width: 800px;
    margin: 0 auto;
}

.system-requirements h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
    text-align: center;
}

.requirements-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    max-width: 600px;
    margin: 0 auto;
}

.requirement-item {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    padding: var(--space-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-base);
    text-align: center;
}

.requirement-item strong {
    color: var(--text-primary);
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: white;
    padding: var(--space-3xl) 0 var(--space-lg);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.footer-brand {
    flex: 2;
}

.footer-links {
    flex: 3;
    display: flex;
    justify-content: flex-start;
    gap: var(--space-3xl);
}

.footer-logo-container {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    text-decoration: none;
    color: inherit;
    cursor: pointer;
    transition: all var(--animation-base);
    outline: none;
    border-radius: var(--radius-base);
}

.footer-logo-container:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.3);
}

.footer-logo-image {
    width: 32px;
    height: 32px;
    object-fit: contain;
    filter: brightness(0) invert(1) drop-shadow(0 2px 4px rgba(255, 255, 255, 0.2));
    transition: all var(--animation-base);
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    padding: 2px;
}

.footer-logo-container:hover .footer-logo-image {
    transform: scale(1.05);
    filter: brightness(0) invert(1) drop-shadow(0 4px 8px rgba(255, 255, 255, 0.3));
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.2);
}

.footer-brand .footer-logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
}

.footer-column {
    flex: 1;
    min-width: 200px;
    max-width: 250px;
}

.footer-column h4 {
    font-weight: 600;
    margin-bottom: var(--space-lg);
    color: white;
}

.footer-column a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    display: block;
    margin-bottom: var(--space-sm);
    transition: color var(--animation-fast);
    font-size: var(--font-size-sm);
}

.footer-column a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-lg);
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
}

.footer-bottom p {
    margin-bottom: var(--space-sm);
}

.footer-bottom p:last-child {
    margin-bottom: 0;
}

.icp-info {
    font-size: var(--font-size-sm);
}

.icp-link {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color var(--animation-base);
}

.icp-link:hover {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .navbar {
        /* 鍦ㄧЩ鍔ㄧ澧炲己纾爞鏁堟灉 */
        background: rgba(255, 255, 255, 0.9);
        backdrop-filter: blur(15px) saturate(160%);
    }
    
    .nav-links {
        display: none;
    }
    
    .hero-title {
        font-size: var(--font-size-5xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-xl);
    }
    
    .floating-shape {
        display: none;
    }
    
    .tetris-container,
    .left-decoration {
        display: none;
    }
    
    /* 鍦ㄥ钩鏉夸笂鏄剧ず閮ㄥ垎瑁呴グ鏁堟灉 */
    @media (min-width: 768px) and (max-width: 1024px) {
        .left-decoration {
            width: 30%;
        }
        
        .tetris-container {
            width: 120px;
            height: 200px;
            left: 8%;
            top: 20%;
        }
        
        .tetris-frame {
            opacity: 0.4;
            border-width: 1px;
        }
        
        .tetris-frame::after {
            opacity: 0.5;
        }
        
        .falling-block {
            transform: scale(0.8);
        }
        
        .falling-block::before {
            display: none;
        }
        
        /* 骞虫澘涓婂彧鏄剧ず閮ㄥ垎鏂瑰潡 */
        .block-6, .block-7, .block-8 {
            display: none;
        }
        
        /* 宸︿晶娴鐭╁舰鍦ㄥ钩鏉夸笂鐨勮皟鏁?*/
        .left-float-1 {
            width: 80px;
            height: 50px;
            top: 5%;
            left: 1%;
        }
        
        .left-float-2 {
            width: 60px;
            height: 40px;
            top: 50%;
            left: 0.5%;
        }
        
        .left-float-3, .left-float-4, .left-float-5, .left-float-6, .left-float-7, .left-float-8,
        .left-mini-1, .left-mini-2, .left-mini-3 {
            display: none;
        }
        
        .floating-shape {
            opacity: 0.08;
        }
        
        .shape-7, .shape-8, .shape-10, .shape-12 {
            display: none;
        }
    }
    
    .demo-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: var(--space-xl);
    }
    
    .footer-links {
        width: 100%;
        max-width: 600px;
        justify-content: space-between;
        gap: var(--space-2xl);
    }
    
    .requirements-grid {
        grid-template-columns: repeat(2, 1fr);
        max-width: 500px;
        gap: var(--space-md);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .nav-container {
        padding: 0 var(--space-md);
    }
    
    .logo-image {
        width: 32px;
        height: 32px;
    }
    
    .nav-logo .logo-text {
        font-size: var(--font-size-xl);
    }
    
    /* 修复移动端hero区域被导航栏遮挡的问题 */
    .hero {
        margin-top: 0 !important;
        padding-top: 90px !important;
    }
    
    .hero-background {
        top: 0 !important;
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .hero-badge {
        font-size: var(--font-size-xs);
        padding: 8px 20px;
        letter-spacing: 0.02em;
        word-spacing: 0.1em;
    }
    
    .hero-stats {
        padding: var(--space-lg) var(--space-md);
        gap: var(--space-lg);
    }
    
    .stat-number {
        font-size: var(--font-size-3xl);
    }
    
    .stat-description {
        font-size: 10px;
        line-height: 1.3;
        margin-top: 4px;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        gap: var(--space-lg);
    }
    
    .section-title {
        font-size: var(--font-size-3xl);
    }
    
    .section-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .download-options {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .download-card.professional::before {
        top: 12px;
        right: 12px;
        font-size: 10px;
        padding: 2px 6px;
    }
    
    .version-features h4,
    .version-limits h4,
    .version-requirement h4 {
        font-size: var(--font-size-sm);
    }
    
    .requirements-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: var(--space-xl);
    }
    
    .footer-links {
        flex-direction: row;
        justify-content: space-between;
        gap: var(--space-lg);
    }
    
    .footer-column {
        min-width: 140px;
        max-width: none;
    }
}

@media (max-width: 480px) {
    .hero {
        margin-top: 0 !important; /* 移动端不使用负margin避免被导航栏遮挡 */
        padding-top: 100px !important; /* 增加顶部间距确保内容不被遮挡 */
    }
    
    .hero-background {
        top: 0 !important; /* 背景也不向上延伸 */
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
        line-height: 1.2;
    }
    
    .hero-content {
        padding: var(--space-2xl) 0;
    }
    
    .hero-stats {
        flex-direction: row;
        flex-wrap: nowrap;
        gap: var(--space-sm);
        padding: var(--space-lg) var(--space-sm);
        justify-content: space-between;
    }
    
    .stat-item {
        min-width: 80px;
        flex: 1;
        max-width: none;
    }
    
    .stat-description {
        font-size: 11px;
        line-height: 1.4;
    }
    
    .btn-hero-primary,
    .btn-hero-secondary {
        padding: 12px 24px;
        font-size: var(--font-size-base);
        width: 100%;
        max-width: 280px;
    }
    
    .footer-links {
        flex-direction: column;
        gap: var(--space-lg);
    }
    
    .footer-column {
        min-width: auto;
        text-align: center;
    }
    
    .download-options {
        gap: var(--space-lg);
    }
    
    .download-card {
        padding: var(--space-lg);
    }
    
    .version-features li,
    .version-limits li {
        font-size: 12px;
        padding: 2px 0;
    }
    
    .download-card.professional::before {
        display: none;
    }
    
    .requirement-item {
        font-size: var(--font-size-xs);
        padding: var(--space-xs);
    }
    
    .logo-image {
        width: 28px;
        height: 28px;
    }
    
    .nav-logo:hover {
        transform: none;
        background: rgba(102, 126, 234, 0.1);
    }
    
    .logo-image:hover {
        transform: scale(1.05);
        box-shadow: 0 0 10px rgba(102, 126, 234, 0.2);
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .hero-particles,
    .gradient-bg,
    .hero-decoration,
    .floating-shape,
    .tetris-container,
    .falling-block,
    .tetris-frame,
    .hero-badge,
    .hero-background::after {
        animation: none;
    }
}

/* Focus styles for keyboard navigation */
a:focus,
button:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.5);
    border-radius: var(--radius-sm);
}

/* Remove focus outline for mouse users but keep for keyboard users */
a:focus:not(:focus-visible),
button:focus:not(:focus-visible) {
    outline: none;
    box-shadow: none;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --text-secondary: #000000;
    }
}

/* 缁熻椤硅儗鏅诞鍔ㄧ煩褰㈣楗版牱寮?*/
.stats-bg-shape-1 {
    position: absolute;
    top: 65%;
    right: 15%;
    width: 120px;
    height: 80px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.08) 0%, rgba(139, 92, 246, 0.06) 100%);
    border: 1px solid rgba(102, 126, 234, 0.15);
    border-radius: var(--radius-lg);
    opacity: 0.12;
    animation: floatRectangle 18s ease-in-out infinite;
    animation-delay: -2s;
    z-index: 0;
    transform: rotate(-5deg);
}

.stats-bg-shape-2 {
    position: absolute;
    top: 75%;
    right: 25%;
    width: 90px;
    height: 60px;
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.08) 0%, rgba(102, 126, 234, 0.06) 100%);
    border: 1px solid rgba(6, 182, 212, 0.15);
    border-radius: var(--radius-md);
    opacity: 0.1;
    animation: floatRectangle 22s ease-in-out infinite;
    animation-delay: -8s;
    z-index: 0;
    transform: rotate(8deg);
}

/* About Page Styles */

/* Page Header */
.page-header {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.08) 50%, rgba(6, 182, 212, 0.06) 100%);
    padding: 120px 0 80px;
    margin-top: -70px;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(102, 126, 234, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(102, 126, 234, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.3;
}

.page-header-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.page-title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-subtitle {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

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

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

/* Company Introduction */
.company-intro {
    padding: var(--space-5xl) 0;
    background: rgba(255, 255, 255, 0.5);
}

.company-content {
    display: grid;
    gap: var(--space-4xl);
}

.company-story {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--space-3xl);
    align-items: start;
}

.story-text h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
    position: relative;
}

.story-text h3::before {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.story-text p {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: var(--space-2xl);
}

.story-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

.stat-card {
    background: white;
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-base);
    border: 1px solid var(--border-light);
    transition: transform var(--animation-base);
}

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

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-sm);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.company-values h3 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: var(--space-2xl);
}

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

.value-card {
    background: white;
    padding: var(--space-2xl);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-base);
    border: 1px solid var(--border-light);
    transition: all var(--animation-base);
}

.value-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-color);
}

.value-icon {
    font-size: 3rem;
    margin-bottom: var(--space-lg);
}

.value-card h4 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.value-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Team Section */
.team-section {
    padding: var(--space-5xl) 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.02) 0%, rgba(6, 182, 212, 0.03) 100%);
}

.team-content {
    display: grid;
    gap: var(--space-4xl);
}

.team-intro h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
}

.team-intro p {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    color: var(--text-secondary);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-2xl);
}

.team-member {
    background: white;
    padding: var(--space-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-base);
    border: 1px solid var(--border-light);
    transition: all var(--animation-base);
    text-align: center;
}

.team-member:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.member-avatar {
    margin-bottom: var(--space-xl);
}

.avatar-placeholder {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    color: white;
}

.member-name {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.member-title {
    font-size: var(--font-size-md);
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: var(--space-lg);
}

.member-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-lg);
}

.member-skills {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    justify-content: center;
}

.skill-tag {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.team-culture h3 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-xl);
}

.culture-item {
    text-align: center;
    padding: var(--space-xl);
}

.culture-icon {
    font-size: 3rem;
    margin-bottom: var(--space-lg);
}

.culture-item h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.culture-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Contact Section */
.contact-section {
    padding: var(--space-5xl) 0;
    background: white;
}

.contact-content {
    margin-bottom: var(--space-4xl);
}

.contact-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-2xl);
    max-width: 800px;
    margin: 0 auto;
}

.contact-method {
    display: flex;
    gap: var(--space-lg);
    align-items: flex-start;
}

.contact-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.contact-details h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.contact-details p {
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
}

.contact-form h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-2xl);
}

.contact-form-container {
    display: grid;
    gap: var(--space-xl);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

.form-group {
    display: grid;
    gap: var(--space-sm);
}

.form-group label {
    font-weight: 500;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-base);
    font-size: var(--font-size-md);
    transition: all var(--animation-fast);
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

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

.btn-submit {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 16px 32px;
    border-radius: var(--radius-base);
    font-weight: 600;
    font-size: var(--font-size-md);
    cursor: pointer;
    transition: all var(--animation-base);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    justify-self: start;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.service-promise h3 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.promise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-xl);
}

.promise-item {
    text-align: center;
    padding: var(--space-xl);
    background: rgba(102, 126, 234, 0.02);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(102, 126, 234, 0.1);
}

.promise-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-lg);
}

.promise-item h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.promise-item p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* Responsive Design for About Page */
@media (max-width: 1024px) {
    .company-story {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .story-stats {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-md);
    }
    

}

@media (max-width: 768px) {
    .page-header {
        padding: 100px 0 60px;
    }
    
    .page-title {
        font-size: var(--font-size-4xl);
    }
    
    .page-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .story-stats {
        grid-template-columns: 1fr 1fr;
    }
    
    .values-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .team-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .culture-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .contact-methods {
        grid-template-columns: 1fr 1fr;
    }
    
    .wechat-content {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
        text-align: center;
    }
    
    .qr-code {
        width: 120px;
        height: 120px;
    }
    
    .promise-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-lg);
    }
}

@media (max-width: 480px) {
    .company-intro,
    .team-section,
    .contact-section {
        padding: var(--space-3xl) 0;
    }
    
    .story-stats {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .promise-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .contact-methods {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .wechat-content {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
        text-align: center;
    }
    
    .qr-code {
        width: 100px;
        height: 100px;
    }
    
    .wechat-features li {
        font-size: 12px;
    }
    
    .contact-method {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }
}

/* WeChat Section */
.wechat-section {
    margin-top: 3rem;
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.05) 0%, rgba(16, 185, 129, 0.05) 100%);
    border-radius: var(--radius-xl);
    padding: 2rem;
    border: 1px solid rgba(34, 197, 94, 0.1);
}

.wechat-section h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: var(--space-2xl);
    position: relative;
}

.wechat-section h3::before {
    content: '\1F4AC';
    margin-right: var(--space-sm);
}

.wechat-content {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-3xl);
    align-items: center;
    max-width: 600px;
    margin: 0 auto;
}

.wechat-qr {
    text-align: center;
}

.qr-code {
    width: 150px;
    height: 150px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-base);
    border: 3px solid white;
    background: white;
    padding: 8px;
}

.qr-description {
    margin-top: var(--space-md);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.wechat-info h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
}

.wechat-features {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--space-lg) 0;
}

.wechat-features li {
    padding: 4px 0;
    color: #16a34a;
    font-weight: 500;
    font-size: var(--font-size-sm);
}

.wechat-note {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.6;
    background: rgba(255, 255, 255, 0.8);
    padding: var(--space-md);
    border-radius: var(--radius-base);
    border-left: 3px solid #16a34a;
}

/* ========================================
   售后政策页面样式
   ======================================== */

.policy-page {
    min-height: 100vh;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding: 120px 0 60px;

    .policy-container {
        max-width: 900px;
        margin: 0 auto;
        padding: 0 var(--space-md);
    }
    
    .policy-header {
        text-align: center;
        margin-bottom: var(--space-xl);
        padding: var(--space-xl);
        background: white;
        border-radius: var(--radius-xl);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    }
    
    .policy-title {
        font-size: 2.5rem;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: var(--space-md);
        line-height: 1.2;
    }
    
    .policy-subtitle {
        font-size: var(--font-size-lg);
        color: var(--text-secondary);
        margin-bottom: var(--space-lg);
    }
    
    .policy-effective-date {
        display: inline-block;
        padding: var(--space-sm) var(--space-md);
        background: linear-gradient(135deg, #dc3545 0%, #c82333 100%);
        color: white;
        border-radius: 9999px;
        font-size: var(--font-size-sm);
        font-weight: 600;
    }
    
    .policy-content {
        background: white;
        border-radius: var(--radius-xl);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        overflow: hidden;
    }
    
    .policy-section {
        padding: var(--space-xl);
        border-bottom: 1px solid #e2e8f0;
    }
    
    .policy-section:last-child {
        border-bottom: none;
    }
    
    .section-title {
        font-size: 1.5rem;
        font-weight: 600;
        color: var(--text-primary);
        margin-bottom: var(--space-lg);
        display: flex;
        align-items: center;
        gap: var(--space-sm);
    }
    
    .section-content h4 {
        font-size: 1.2rem;
        font-weight: 600;
        color: var(--text-primary);
        margin: var(--space-lg) 0 var(--space-md) 0;
    }
    
    .section-content p {
        line-height: 1.8;
        color: var(--text-secondary);
        margin-bottom: var(--space-md);
    }
    
    .section-content ul {
        list-style: none;
        padding: 0;
        margin: var(--space-md) 0;
    }
    
    .section-content li {
        padding: var(--space-sm) 0;
        color: var(--text-secondary);
        line-height: 1.8;
        position: relative;
        padding-left: var(--space-lg);
    }
    
    .section-content li:before {
        content: "•";
        color: var(--primary-color);
        font-weight: bold;
        position: absolute;
        left: 0;
    }
    
    .highlight-box {
        background: linear-gradient(135deg, rgba(220, 53, 69, 0.05) 0%, rgba(220, 53, 69, 0.02) 100%);
        border: 1px solid rgba(220, 53, 69, 0.1);
        border-radius: var(--radius-lg);
        padding: var(--space-lg);
        margin: var(--space-lg) 0;
    }
    
    .highlight-box h4 {
        color: var(--primary-color);
        margin-top: 0;
    }
    
    .cost-table {
        width: 100%;
        border-collapse: collapse;
        margin: var(--space-lg) 0;
        background: white;
        border-radius: var(--radius-base);
        overflow: hidden;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    }
    
    .cost-table th,
    .cost-table td {
        padding: var(--space-md);
        text-align: left;
        border-bottom: 1px solid #e2e8f0;
    }
    
    .cost-table th {
        background: linear-gradient(135deg, #dc3545 0%, #c82333 100%);
        color: white;
        font-weight: 600;
    }
    
    .cost-table tr:hover {
        background: rgba(220, 53, 69, 0.02);
    }
    
    .warning-box {
        background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(245, 158, 11, 0.05) 100%);
        border: 1px solid rgba(245, 158, 11, 0.2);
        border-radius: var(--radius-lg);
        padding: var(--space-lg);
        margin: var(--space-lg) 0;
    }
    
    .warning-box h4 {
        color: #d97706;
        margin-top: 0;
        display: flex;
        align-items: center;
        gap: var(--space-sm);
    }
    
    .back-to-home {
        text-align: center;
        margin-top: var(--space-xl);
    }
    
    .btn-back {
        display: inline-flex;
        align-items: center;
        gap: var(--space-sm);
        padding: var(--space-md) var(--space-xl);
        background: linear-gradient(135deg, #dc3545 0%, #c82333 100%);
        color: white;
        text-decoration: none;
        border-radius: var(--radius-lg);
        font-weight: 600;
        transition: all 0.3s ease;
        box-shadow: 0 4px 12px rgba(220, 53, 69, 0.3);
    }
    
    .btn-back:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 20px rgba(220, 53, 69, 0.4);
        background: linear-gradient(135deg, #c82333 0%, #a71e2a 100%);
    }
    
    /* 售后政策页面响应式设计 */
    @media (max-width: 768px) {
        .policy-page {
            padding: 100px 0 40px;
        }
        
        .policy-title {
            font-size: 2rem;
        }
        
        .policy-section {
            padding: var(--space-lg);
        }
        
        .cost-table {
            font-size: var(--font-size-sm);
        }
        
        .cost-table th,
        .cost-table td {
            padding: var(--space-sm);
        }
    }
}