/* 基础样式 */
:root {
    /* 新的自然柔和配色方案 */
    --primary-color: #0f766e;
    /* 青绿主色 */
    --primary-dark: #115e59;
    --primary-light: #2dd4bf;
    --secondary-color: #22c55e;
    /* 辅助绿色 */
    --accent-color: #f59e0b;
    /* 温暖点缀色 */
    --text-primary: #1f2933;
    /* 深石板灰，正文主色 */
    --text-secondary: #6b7280;
    /* 次级文字灰 */
    --text-light: #9ca3af;
    /* 浅灰文字 */
    --bg-primary: #ffffff;
    --bg-secondary: #f3f4f6;
    --bg-dark: #0b1120;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;
    --spacing-4xl: 96px;
    --font-primary: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --container-width: 1280px;
    --header-height: 72px;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    position: relative;
}

/* 全局背景网格 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    background-position: 0 0;
    pointer-events: none;
    z-index: 0;
    opacity: 0.5;
    animation: grid-move 20s linear infinite;
}

@keyframes grid-move {
    0% {
        background-position: 0 0;
    }

    100% {
        background-position: 50px 50px;
    }
}

/* 全局渐变遮罩 */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(236, 72, 153, 0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
    animation: gradient-shift-bg 15s ease-in-out infinite;
}

@keyframes gradient-shift-bg {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.8;
    }
}

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

ul {
    list-style: none;
}

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

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

/* 布局 */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* 加载动画 */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-content {
    text-align: center;
    color: white;
}

.loading-logo-wrapper {
    margin-bottom: var(--spacing-lg);
}

.loading-logo {
    width: 60px;
    height: 60px;
    margin: 0 auto;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading-text {
    font-size: 0.875rem;
    opacity: 0.9;
}

/* 导航栏 */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all var(--transition-base);
}

.site-header.scrolled {
    box-shadow: var(--shadow-sm);
    background: rgba(255, 255, 255, 0.95);
}

.main-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--header-height);
}

.nav-logo .logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-links {
    display: flex;
    gap: var(--spacing-xl);
}

.nav-links a {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-primary);
    opacity: 0.7;
    position: relative;
    padding: var(--spacing-xs) 0;
    transition: opacity var(--transition-base), color var(--transition-base);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width var(--transition-base);
}

.nav-links a:hover {
    color: var(--text-primary);
    opacity: 1;
}

.nav-links a:hover::after {
    width: 100%;
}

.lang-toggle {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 0.5rem 0.75rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.lang-toggle:hover {
    background: var(--bg-primary);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.lang-current {
    color: var(--primary-color);
    transition: color var(--transition-base);
}

.lang-separator {
    opacity: 0.4;
    margin: 0 2px;
}

.lang-other {
    opacity: 0.6;
    transition: opacity var(--transition-base);
}

.lang-toggle:hover .lang-other {
    opacity: 1;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 24px;
    height: 20px;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    transition: all var(--transition-base);
    border-radius: 2px;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 0.9375rem;
    transition: all var(--transition-base);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: var(--shadow-md);
}

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

.btn-primary:active {
    transform: translateY(0);
}



.btn svg {
    flex-shrink: 0;
}

/* Hero区域 */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(var(--header-height) + var(--spacing-2xl)) 0 var(--spacing-4xl);
    overflow: hidden;
    background:
        radial-gradient(circle at 0% 0%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 100% 50%, rgba(139, 92, 246, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 50% 100%, rgba(236, 72, 153, 0.04) 0%, transparent 50%),
        linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
    z-index: 1;
}

/* Hero区域网格叠加 */
.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(99, 102, 241, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.05) 1px, transparent 1px);
    background-size: 60px 60px;
    background-position: 0 0;
    opacity: 0.6;
    z-index: 0;
    animation: grid-move-hero 25s linear infinite;
}

@keyframes grid-move-hero {
    0% {
        background-position: 0 0;
    }

    100% {
        background-position: 60px 60px;
    }
}

/* Hero区域装饰线条 */
.hero-section::after {
    content: '';
    position: absolute;
    top: 20%;
    right: 10%;
    width: 300px;
    height: 300px;
    border: 1px solid rgba(99, 102, 241, 0.1);
    border-radius: 50%;
    z-index: 0;
    animation: pulse-ring 4s ease-in-out infinite;
}

@keyframes pulse-ring {

    0%,
    100% {
        transform: scale(1);
        opacity: 0.3;
    }

    50% {
        transform: scale(1.2);
        opacity: 0.1;
    }
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    top: -250px;
    left: -250px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, #ec4899, #f43f5e);
    top: 40%;
    right: -200px;
    animation-delay: 5s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #06b6d4, #3b82f6);
    bottom: -150px;
    left: 15%;
    animation-delay: 10s;
}

/* 额外的光球 */
.orb-4 {
    width: 350px;
    height: 350px;
    background: linear-gradient(135deg, #f59e0b, #ef4444);
    top: 60%;
    left: 50%;
    animation-delay: 7s;
    opacity: 0.4;
}

.orb-5 {
    width: 250px;
    height: 250px;
    background: linear-gradient(135deg, #10b981, #06b6d4);
    top: 10%;
    right: 30%;
    animation-delay: 3s;
    opacity: 0.35;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1) rotate(0deg);
    }

    33% {
        transform: translate(30px, -30px) scale(1.1) rotate(5deg);
    }

    66% {
        transform: translate(-20px, 20px) scale(0.9) rotate(-5deg);
    }
}

/* 添加微妙的粒子效果 */
.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(2px 2px at 20% 30%, rgba(99, 102, 241, 0.3), transparent),
        radial-gradient(2px 2px at 60% 70%, rgba(139, 92, 246, 0.3), transparent),
        radial-gradient(1px 1px at 50% 50%, rgba(236, 72, 153, 0.2), transparent),
        radial-gradient(1px 1px at 80% 10%, rgba(6, 182, 212, 0.2), transparent),
        radial-gradient(2px 2px at 90% 60%, rgba(99, 102, 241, 0.2), transparent),
        radial-gradient(1.5px 1.5px at 10% 80%, rgba(139, 92, 246, 0.25), transparent),
        radial-gradient(1px 1px at 70% 40%, rgba(236, 72, 153, 0.15), transparent);
    background-size: 200% 200%;
    animation: particle-float 20s ease-in-out infinite;
    z-index: 0;
    opacity: 0.6;
}

@keyframes particle-float {

    0%,
    100% {
        background-position: 0% 0%;
        opacity: 0.6;
    }

    50% {
        background-position: 100% 100%;
        opacity: 0.8;
    }
}

/* 添加额外的装饰线条 */
.hero-background::after {
    content: '';
    position: absolute;
    top: 30%;
    left: 5%;
    width: 1px;
    height: 200px;
    background: linear-gradient(180deg, transparent, rgba(99, 102, 241, 0.2), transparent);
    z-index: 0;
    animation: line-pulse 3s ease-in-out infinite;
}

@keyframes line-pulse {

    0%,
    100% {
        opacity: 0.2;
        transform: scaleY(1);
    }

    50% {
        opacity: 0.4;
        transform: scaleY(1.2);
    }
}

/* 流星特效 */
.shooting-star {
    position: absolute;
    width: 2px;
    height: 100px;
    background: linear-gradient(180deg, rgba(99, 102, 241, 0.8) 0%, transparent 100%);
    border-radius: 50%;
    z-index: 0;
    opacity: 0;
    pointer-events: none;
    filter: blur(1px);
}

.shooting-star::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.8), 0 0 20px rgba(99, 102, 241, 0.6);
}

.star-1 {
    top: 20%;
    left: 10%;
    transform: rotate(-45deg);
    animation: shooting-star-1 8s ease-in-out infinite;
}

.star-2 {
    top: 60%;
    left: 80%;
    transform: rotate(135deg);
    animation: shooting-star-2 12s ease-in-out infinite;
    animation-delay: 3s;
}

.star-3 {
    top: 40%;
    left: 50%;
    transform: rotate(-30deg);
    animation: shooting-star-3 10s ease-in-out infinite;
    animation-delay: 6s;
}

@keyframes shooting-star-1 {
    0% {
        opacity: 0;
        transform: translate(-200px, -200px) rotate(-45deg);
    }

    10% {
        opacity: 1;
    }

    20% {
        opacity: 0;
        transform: translate(200px, 200px) rotate(-45deg);
    }

    100% {
        opacity: 0;
        transform: translate(200px, 200px) rotate(-45deg);
    }
}

@keyframes shooting-star-2 {
    0% {
        opacity: 0;
        transform: translate(200px, -200px) rotate(135deg);
    }

    10% {
        opacity: 1;
    }

    20% {
        opacity: 0;
        transform: translate(-200px, 200px) rotate(135deg);
    }

    100% {
        opacity: 0;
        transform: translate(-200px, 200px) rotate(135deg);
    }
}

@keyframes shooting-star-3 {
    0% {
        opacity: 0;
        transform: translate(-150px, 150px) rotate(-30deg);
    }

    10% {
        opacity: 1;
    }

    20% {
        opacity: 0;
        transform: translate(150px, -150px) rotate(-30deg);
    }

    100% {
        opacity: 0;
        transform: translate(150px, -150px) rotate(-30deg);
    }
}

/* 闪光星星特效 */
.sparkle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    z-index: 0;
    pointer-events: none;
    box-shadow: 0 0 6px rgba(99, 102, 241, 0.8), 0 0 12px rgba(139, 92, 246, 0.6);
    will-change: opacity, transform;
}

.sparkle-1 {
    top: 15%;
    left: 20%;
    animation: sparkle-twinkle 3s ease-in-out infinite;
}

.sparkle-2 {
    top: 30%;
    left: 75%;
    animation: sparkle-twinkle 4s ease-in-out infinite;
    animation-delay: 0.5s;
}

.sparkle-3 {
    top: 55%;
    left: 15%;
    animation: sparkle-twinkle 3.5s ease-in-out infinite;
    animation-delay: 1s;
}

.sparkle-4 {
    top: 70%;
    left: 60%;
    animation: sparkle-twinkle 4.5s ease-in-out infinite;
    animation-delay: 1.5s;
}

.sparkle-5 {
    top: 25%;
    left: 45%;
    animation: sparkle-twinkle 3.2s ease-in-out infinite;
    animation-delay: 2s;
}

.sparkle-6 {
    top: 80%;
    left: 85%;
    animation: sparkle-twinkle 4.2s ease-in-out infinite;
    animation-delay: 2.5s;
}

@keyframes sparkle-twinkle {

    0%,
    100% {
        opacity: 0;
        transform: scale(0.5);
    }

    50% {
        opacity: 1;
        transform: scale(1.2);
    }
}

/* 为Apps区域也添加闪光效果 */
.apps-section {
    position: relative;
}

.apps-section>.sparkle {
    position: absolute;
    width: 3px;
    height: 3px;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 50%;
    box-shadow: 0 0 4px rgba(99, 102, 241, 0.6), 0 0 8px rgba(139, 92, 246, 0.4);
    z-index: 0;
    pointer-events: none;
}

.apps-section>.sparkle-1 {
    top: 10%;
    left: 25%;
    animation: sparkle-twinkle 5s ease-in-out infinite;
}

.apps-section>.sparkle-2 {
    top: 40%;
    left: 70%;
    animation: sparkle-twinkle 6s ease-in-out infinite;
    animation-delay: 1s;
}

.apps-section>.sparkle-3 {
    top: 70%;
    left: 20%;
    animation: sparkle-twinkle 5.5s ease-in-out infinite;
    animation-delay: 2s;
}

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

.hero-content {
    max-width: 800px;
    text-align: center;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 50px;
    margin-bottom: var(--spacing-xl);
    backdrop-filter: blur(10px);
}

.badge-text {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-color);
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.title-line {
    display: block;
}

.gradient-text {
    background: linear-gradient(135deg, #4a5568, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: gradient-shift 5s ease infinite;
}

@keyframes gradient-shift {

    0%,
    100% {
        background-position: 0% center;
    }

    50% {
        background-position: 100% center;
    }
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
    opacity: 0.9;
}

.hero-cta {
    display: inline-flex;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.75rem;
    z-index: 1;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(180deg, var(--primary-color), transparent);
    animation: scroll-line 2s ease-in-out infinite;
}

@keyframes scroll-line {

    0%,
    100% {
        opacity: 0.3;
        transform: translateY(0);
    }

    50% {
        opacity: 1;
        transform: translateY(10px);
    }
}

/* 通用部分样式 */
.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-4xl);
    position: relative;
    z-index: 1;
    opacity: 0;
    transform: translateY(30px);
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    letter-spacing: -0.02em;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.title-number {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-secondary);
    opacity: 0.6;
}

.title-text {
    color: var(--text-primary);
    font-weight: 800;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 600px;
    margin: 0 auto;
    opacity: 0.85;
}

/* App展示区域 */
.apps-section {
    padding: var(--spacing-4xl) 0;
    background:
        radial-gradient(circle at 30% 20%, rgba(99, 102, 241, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(139, 92, 246, 0.05) 0%, transparent 50%),
        var(--bg-secondary);
    position: relative;
    z-index: 1;
}

/* Apps区域网格 */
.apps-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(99, 102, 241, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.04) 1px, transparent 1px);
    background-size: 80px 80px;
    background-position: 0 0;
    opacity: 0.5;
    z-index: 0;
    animation: grid-move-apps 30s linear infinite;
}

@keyframes grid-move-apps {
    0% {
        background-position: 0 0;
    }

    100% {
        background-position: 80px 80px;
    }
}

/* Apps区域装饰元素 */
.apps-section::after {
    content: '';
    position: absolute;
    bottom: 10%;
    left: 5%;
    width: 200px;
    height: 200px;
    border: 1px solid rgba(139, 92, 246, 0.08);
    border-radius: 50%;
    z-index: 0;
    animation: pulse-ring 5s ease-in-out infinite;
    animation-delay: 1s;
}

.apps-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4xl);
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
}

.app-card {
    position: relative;
    width: 100%;
    opacity: 0;
    transform: translateY(40px);
}

.app-card:nth-child(even) .app-card-inner {
    flex-direction: row-reverse;
}

.app-card:nth-child(even) .app-main-content {
    text-align: right;
}

.app-card:nth-child(even) .app-icon-wrapper {
    justify-content: flex-end;
}

.app-card:nth-child(even) .app-features {
    justify-content: flex-end;
}

.app-card-inner {
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-3xl);
    min-height: 400px;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-3xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-slow);
    border: 1px solid rgba(255, 255, 255, 0.6);
    position: relative;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.65);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
}

.app-card-inner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    z-index: 1;
    opacity: 0.8;
}

.app-card:nth-child(even) .app-card-inner::before {
    transform-origin: right;
}

.app-card:hover .app-card-inner {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px -4px rgba(0, 0, 0, 0.08), 0 10px 20px -5px rgba(0, 0, 0, 0.04);
    border-color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.85);
}

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

.app-main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.app-icon-wrapper {
    display: flex;
    justify-content: flex-start;
    position: relative;
    flex-shrink: 0;
    --icon-glow: 0;
}

.app-icon-wrapper::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 160px;
    height: 160px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    opacity: calc(var(--icon-glow) * 1);
    transition: opacity 0.5s ease;
    pointer-events: none;
    z-index: -1;
    border-radius: 50%;
}

.app-card:nth-child(even) .app-icon-wrapper::after {
    background: radial-gradient(circle, rgba(139, 92, 246, 0.12) 0%, transparent 70%);
}

.app-icon-placeholder {
    width: 140px;
    height: 140px;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
    will-change: transform, filter;
}

.app-icon-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.5s ease;
    border-radius: var(--radius-xl);
    pointer-events: none;
}

.app-card:hover .app-icon-placeholder::before {
    opacity: 1;
}

.app-card:hover .app-icon-placeholder {
    transform: scale(1.02);
    box-shadow: 0 10px 25px rgba(99, 102, 241, 0.15), var(--shadow-lg);
}

.app-icon {
    width: 100%;
    height: 100%;
    border-radius: var(--radius-xl);
    object-fit: cover;
}

.app-content {
    flex-grow: 1;
    text-align: left;
}

.app-name {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    transition: color var(--transition-base);
    position: relative;
    display: block;
}

.app-card:hover .app-name {
    color: var(--text-primary);
    opacity: 1;
}

.app-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    max-width: 500px;
}

.app-features {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    justify-content: flex-start;
    margin-bottom: var(--spacing-lg);
}

.feature-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-primary);
    opacity: 0.8;
    transition: all var(--transition-base);
    border: 1px solid transparent;
}

.app-card:hover .feature-tag {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(139, 92, 246, 0.08));
    border-color: rgba(99, 102, 241, 0.15);
    color: var(--text-primary);
    opacity: 1;
    transform: translateY(-2px);
}

.app-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    padding-left: var(--spacing-xl);
    border-left: 1px solid var(--border-color);
    min-width: 200px;
}

.app-card:nth-child(even) .app-actions {
    padding-left: 0;
    padding-right: var(--spacing-xl);
    border-left: none;
    border-right: 1px solid var(--border-color);
}

.qr-code-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.qr-code-placeholder {
    width: 140px;
    height: 140px;
    background: var(--bg-secondary);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.qr-code-placeholder::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: all var(--transition-slow);
}

.app-card:hover .qr-code-placeholder::before {
    width: 150px;
    height: 150px;
}

.app-card:hover .qr-code-placeholder {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
    transform: scale(1.03);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.1);
    border-style: solid;
}

.qr-pattern {
    width: 90px;
    height: 90px;
    background-image:
        radial-gradient(var(--text-primary) 1.5px, transparent 1.5px);
    background-size: 6px 6px;
    opacity: 0.15;
    transition: opacity 0.3s ease;
}

.app-card:hover .qr-pattern {
    opacity: 0.3;
}

.qr-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
    opacity: 0.8;
}

.qr-code {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

/* 关于区域 */
.about-section {
    padding: var(--spacing-4xl) 0;
    background:
        radial-gradient(circle at 80% 30%, rgba(236, 72, 153, 0.04) 0%, transparent 50%),
        radial-gradient(circle at 20% 70%, rgba(99, 102, 241, 0.03) 0%, transparent 50%),
        var(--bg-primary);
    position: relative;
    z-index: 1;
}

/* 关于区域装饰 */
.about-section::before {
    content: '';
    position: absolute;
    top: 20%;
    right: 15%;
    width: 150px;
    height: 150px;
    border: 1px solid rgba(236, 72, 153, 0.1);
    border-radius: 50%;
    z-index: 0;
    animation: pulse-ring 6s ease-in-out infinite;
    animation-delay: 2s;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.about-text {
    text-align: center;
}

.about-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    opacity: 0.85;
}

.about-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.about-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-weight: 500;
    transition: all var(--transition-base);
    opacity: 0.9;
}

.about-link:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    opacity: 1;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* 页脚 */
.footer {
    padding: var(--spacing-xl) 0;
    background:
        radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        var(--bg-dark);
    color: var(--text-light);
    position: relative;
    z-index: 1;
}

/* 页脚装饰 */
.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.3), transparent);
}

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

.footer-text {
    font-size: 0.875rem;
    opacity: 0.6;
    color: var(--text-light);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .apps-grid {
        gap: var(--spacing-3xl);
    }

    .app-card-inner {
        flex-direction: column !important;
        padding: var(--spacing-2xl);
        min-height: auto;
        gap: var(--spacing-2xl);
    }

    .app-card:nth-child(even) .app-card-inner {
        flex-direction: column !important;
    }

    .app-main-content {
        text-align: center !important;
    }

    .app-icon-wrapper {
        justify-content: center !important;
    }

    .app-features {
        justify-content: center !important;
    }

    .app-actions {
        padding-left: 0 !important;
        padding-right: 0 !important;
        border-left: none !important;
        border-right: none !important;
        border-top: 1px solid var(--border-color);
        padding-top: var(--spacing-xl);
        width: 100%;
        min-width: auto;
    }

    .app-icon-wrapper::after {
        left: 50% !important;
        right: auto !important;
        transform: translateX(-50%);
        background: linear-gradient(90deg, transparent, var(--primary-color), transparent) !important;
    }

    .app-description {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 64px;
        --spacing-4xl: 64px;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-actions {
        gap: var(--spacing-sm);
    }

    .lang-toggle {
        padding: 0.4rem 0.6rem;
        font-size: 0.8125rem;
    }

    .nav-links {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background: var(--bg-primary);
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
        box-shadow: var(--shadow-lg);
        border-top: 1px solid var(--border-color);
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .hero-stats {
        gap: var(--spacing-lg);
    }

    .stat-number {
        font-size: 2rem;
    }

    .apps-grid {
        gap: var(--spacing-2xl);
    }

    .app-card-inner {
        padding: var(--spacing-xl);
        gap: var(--spacing-xl);
    }

    .app-icon-placeholder {
        width: 120px;
        height: 120px;
    }

    .app-name {
        font-size: 1.75rem;
    }

    .app-description {
        font-size: 1rem;
    }

    .app-actions {
        gap: var(--spacing-md);
    }

    .btn-appstore {
        width: 100%;
        justify-content: center;
    }

    .qr-code-placeholder {
        width: 120px;
        height: 120px;
    }
}

@media (max-width: 480px) {

    /* 移动端减少特效数量以提升性能 */
    .shooting-star {
        display: none;
    }

    .hero-background .sparkle:nth-child(n+4) {
        display: none;
    }

    .apps-section>.sparkle:nth-child(n+2) {
        display: none;
    }

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.75rem;
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .title-number {
        font-size: 1rem;
    }

    .app-card-inner {
        padding: var(--spacing-lg);
    }

    .app-icon-placeholder {
        width: 80px;
        height: 80px;
    }
}