/* 重置和基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 苹果高级配色方案 */
    --primary-bg: #ffffff;
    --secondary-bg: #f5f5f7;
    --tertiary-bg: #fafafa;
    --card-bg: #ffffff;
    --border-color: #d2d2d7;

    /* 苹果经典渐变色 */
    --primary-gradient: linear-gradient(135deg, #007aff 0%, #5856d6 100%);
    --secondary-gradient: linear-gradient(135deg, #ff2d55 0%, #ff6482 100%);
    --accent-gradient: linear-gradient(135deg, #5ac8fa 0%, #007aff 100%);
    --success-gradient: linear-gradient(135deg, #30d158 0%, #32d74b 100%);
    --warning-gradient: linear-gradient(135deg, #ff9500 0%, #ffcc02 100%);

    /* 苹果文字颜色系统 */
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --text-muted: #86868b;
    --text-inverse: #ffffff;

    /* 苹果品牌色 */
    --brand-primary: #007aff;
    --brand-secondary: #5856d6;
    --accent-color: #5ac8fa;
    --success-color: #30d158;
    --warning-color: #ff9500;
    --error-color: #ff3b30;

    /* 苹果毛玻璃效果 */
    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);

    /* 苹果阴影系统 */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);
    --shadow-2xl: 0 24px 64px rgba(0, 0, 0, 0.2);

    /* 苹果动画缓动 */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --transition-spring: 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'SF Pro Icons', 'Helvetica Neue', 'Helvetica', 'Arial', sans-serif;
    background-color: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}

/* 苹果字体系统 */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', sans-serif;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

h1 {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
}

h2 {
    font-size: 2.5rem;
    font-weight: 600;
    letter-spacing: -0.025em;
}

h3 {
    font-size: 2rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

h4 {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.015em;
}

p {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', sans-serif;
    font-weight: 400;
    line-height: 1.6;
    letter-spacing: 0.01em;
}


.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 - 苹果毛玻璃效果 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--glass-bg);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 0.5px solid var(--glass-border);
    z-index: 1000;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-logo span {
    font-size: 2rem;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    height: 36px;
    margin-top: 4px;
}

.nav-logo img {
    height: 4.5rem;
    width: auto;
    object-fit: contain;
    transition: var(--transition-normal);
    vertical-align: middle;
}

.nav-logo:hover img {
    transform: scale(1.05);
}

.nav-logo i {
    color: var(--brand-primary);
    font-size: 1.8rem;
    transition: var(--transition-normal);
    filter: drop-shadow(0 2px 4px rgba(0, 122, 255, 0.3));
}

.nav-logo:hover i {
    color: var(--brand-secondary);
    transform: scale(1.08);
    filter: drop-shadow(0 4px 8px rgba(88, 86, 214, 0.4));
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', sans-serif;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    letter-spacing: 0.01em;
    transition: var(--transition-fast);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: var(--transition-fast);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    margin: 4px 0;
    transition: var(--transition-fast);
    border-radius: 2px;
}

/* 英雄区域 - 苹果极简风格 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-bg) 0%, var(--secondary-bg) 100%);
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-content {
    animation: slideInLeft 1s ease-out;
}

.hero-title {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', sans-serif;
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -0.03em;
}

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

.hero-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
    padding: 15px 30px;
    border: none;
    border-radius: 50px;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', sans-serif;
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 0.01em;
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary-gradient);
    color: var(--text-inverse);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

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

.btn-primary:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background: var(--glass-bg);
    border-color: var(--brand-primary);
    transform: translateY(-1px) scale(1.01);
    box-shadow: var(--shadow-md);
}

/* 英雄区域视觉效果 */
.hero-visual {
    position: relative;
    animation: slideInRight 1s ease-out;
}

.floating-card {
    position: absolute;
    background: var(--glass-bg);
    padding: 24px;
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    gap: 12px;
    animation: float 3s ease-in-out infinite;
    transition: var(--transition-spring);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    box-shadow: var(--shadow-lg);
}

.floating-card:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: var(--shadow-xl);
    border-color: var(--brand-primary);
}

.floating-card i {
    font-size: 1.5rem;
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    border-radius: 16px;
    color: var(--text-inverse);
    transition: var(--transition-spring);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-sm);
}

.floating-card:hover i {
    background: var(--secondary-gradient);
    color: var(--text-inverse);
    transform: scale(1.08) rotate(5deg);
    box-shadow: var(--shadow-md);
}

.card-1 {
    top: 20px;
    right: 50px;
    animation-delay: 0s;
}

.card-2 {
    top: 120px;
    right: 20px;
    animation-delay: 1s;
}

.card-3 {
    bottom: 100px;
    right: 80px;
    animation-delay: 2s;
}

.hero-dashboard {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 30px;
    border: 1px solid rgba(0, 122, 255, 0.1);
    margin-top: 40px;
    transition: var(--transition-normal);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    box-shadow: var(--shadow-lg);
}

.hero-dashboard:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    border-color: var(--brand-primary);
}

.dashboard-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.dashboard-dots {
    display: flex;
    gap: 5px;
}

.dashboard-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
}

.dashboard-dots span:first-child {
    background: #ff5f57;
}

.dashboard-dots span:nth-child(2) {
    background: #ffbd2e;
}

.dashboard-dots span:last-child {
    background: #28ca42;
}

.dashboard-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.metric-card {
    text-align: center;
    padding: 20px;
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.05) 0%, rgba(90, 200, 250, 0.05) 100%);
    border-radius: 12px;
    border: 1px solid rgba(0, 122, 255, 0.1);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.metric-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--brand-primary) 0%, var(--brand-secondary) 100%);
    opacity: 0;
    transition: var(--transition-normal);
}

.metric-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--brand-primary);
}

.metric-card:hover::before {
    opacity: 1;
}

.metric-value {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 5px;
}

.metric-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 背景装饰 - 更微妙 */
.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.5;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.15;
    animation: pulse 4s ease-in-out infinite;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 122, 255, 0.08) 0%, transparent 70%);
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.orb-2 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(90, 200, 250, 0.06) 0%, transparent 70%);
    top: 60%;
    right: 20%;
    animation-delay: 2s;
}

.orb-3 {
    width: 250px;
    height: 250px;
    background: radial-gradient(circle, rgba(78, 205, 196, 0.05) 0%, transparent 70%);
    bottom: 20%;
    left: 30%;
    animation-delay: 4s;
}

/* 功能特色区域 */
.features {
    padding: 120px 0;
    background: var(--primary-bg);
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.section-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--glass-bg);
    padding: 48px 36px;
    border-radius: 24px;
    border: 1px solid var(--glass-border);
    transition: var(--transition-spring);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-md);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.02) 0%, rgba(90, 200, 250, 0.02) 100%);
    opacity: 0;
    transition: var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
    border-color: var(--brand-primary);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    width: 72px;
    height: 72px;
    background: var(--primary-gradient);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 32px;
    border: 1px solid var(--glass-border);
    transition: var(--transition-spring);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.feature-icon::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transform: rotate(45deg);
    transition: var(--transition-slow);
}

.feature-card:hover .feature-icon::before {
    animation: shimmer 2s infinite;
}

.feature-card:hover .feature-icon {
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.15) 0%, rgba(90, 200, 250, 0.15) 100%);
    border-color: var(--brand-primary);
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 4px 12px rgba(90, 200, 250, 0.25);
}

.feature-icon i {
    font-size: 1.8rem;
    color: var(--text-inverse);
    transition: var(--transition-spring);
    position: relative;
    z-index: 1;
}

.feature-card:hover .feature-icon i {
    color: var(--text-inverse);
    transform: scale(1.1) rotate(10deg);
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%) translateY(-100%) rotate(45deg);
    }

    100% {
        transform: translateX(100%) translateY(100%) rotate(45deg);
    }
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 解决方案区域 */
.solutions {
    padding: 120px 0;
    background: var(--secondary-bg);
}

.solutions-tabs {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 10px 24px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition-normal);
    font-weight: 500;
    font-size: 0.95rem;
}

.tab-btn.active,
.tab-btn:hover {
    background: var(--brand-primary);
    border-color: var(--brand-primary);
    color: white;
    transform: scale(1.02);
}

.tab-content {
    max-width: 1000px;
    margin: 0 auto;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
    animation: fadeIn 0.5s ease-in-out;
}

.solution-content {
    max-width: 800px;
    margin: 40px auto 0;
    text-align: left;
}

.solution-with-preview {
    max-width: 1200px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: flex-start;
}

.solution-text h3 {
    font-size: 2.2rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.solution-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 25px;
    font-style: italic;
}

.solution-description p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 25px;
}

.solution-features {
    list-style: none;
    margin-top: 20px;
}

.solution-features li {
    padding: 12px 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 35px;
    font-size: 0.95rem;
    line-height: 1.6;
}

.solution-features li i {
    position: absolute;
    left: 0;
    top: 12px;
    color: var(--brand-primary);
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
}

/* 文章预览卡片 */
.article-preview-card {
    background: var(--glass-bg);
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    transition: var(--transition-spring);
    overflow: hidden;
    height: fit-content;
    position: sticky;
    top: 100px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-lg);
}

.article-preview-card:hover {
    border-color: var(--brand-primary);
    box-shadow: var(--shadow-xl);
    transform: translateY(-6px) scale(1.01);
}

.article-preview-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 15px 20px;
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.05) 0%, rgba(90, 200, 250, 0.05) 100%);
    border-bottom: 1px solid rgba(0, 122, 255, 0.1);
    color: var(--brand-primary);
    font-size: 0.9rem;
    font-weight: 500;
}

.article-preview-header i {
    font-size: 1.1rem;
}

.article-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.article-preview-image {
    width: 100%;
    height: 220px;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.1) 0%, rgba(90, 200, 250, 0.1) 100%);
    position: relative;
}

.article-preview-image img,
.article-cover-svg {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.article-link:hover .article-preview-image img,
.article-link:hover .article-cover-svg {
    transform: scale(1.05);
}

.article-cover-svg {
    display: block;
}

.article-preview-body {
    padding: 20px;
}

.article-preview-body h4 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-preview-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-preview-meta {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
    padding-top: 15px;
    border-top: 1px solid rgba(0, 122, 255, 0.1);
}

.article-tag,
.article-source {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.article-tag i,
.article-source i {
    font-size: 0.75rem;
}

.article-action {
    margin-left: auto;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--brand-primary);
    font-weight: 500;
    transition: var(--transition-normal);
}

.article-link:hover .article-action {
    color: var(--brand-secondary);
    gap: 10px;
}

.article-action i {
    font-size: 0.75rem;
    transition: var(--transition-normal);
}

/* 苹果风格动画 */
@keyframes appleFloat {

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

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

@keyframes applePulse {

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

    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
}

@keyframes appleGlow {

    0%,
    100% {
        box-shadow: 0 0 20px rgba(0, 122, 255, 0.3);
    }

    50% {
        box-shadow: 0 0 40px rgba(0, 122, 255, 0.6);
    }
}

@keyframes appleSlideIn {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* 价格方案区域 */
.pricing {
    padding: 120px 0;
    background: var(--primary-bg);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 40px 30px;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
    position: relative;
    text-align: center;
}

.pricing-card.featured {
    border-color: var(--brand-primary);
    transform: scale(1.05);
    box-shadow: 0 8px 32px rgba(0, 122, 255, 0.15);
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--brand-primary);
    color: white;
    padding: 6px 16px;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 500;
    box-shadow: 0 2px 8px rgba(0, 122, 255, 0.3);
}

.pricing-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.price {
    margin-bottom: 30px;
}

.currency {
    font-size: 1.2rem;
    color: var(--text-secondary);
    vertical-align: top;
}

.amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-primary);
}

.period {
    font-size: 1rem;
    color: var(--text-secondary);
}

.pricing-features {
    list-style: none;
    margin-bottom: 30px;
}

.pricing-features li {
    padding: 10px 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.pricing-features i {
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.15) 0%, rgba(90, 200, 250, 0.15) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    flex-shrink: 0;
    border: 1px solid rgba(0, 122, 255, 0.2);
    color: var(--brand-primary);
}

.pricing-btn {
    width: 100%;
    padding: 12px;
    background: var(--brand-primary);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: 0 1px 4px rgba(0, 122, 255, 0.24);
    position: relative;
    overflow: hidden;
}

.pricing-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

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

.pricing-btn:hover {
    background: #0071e3;
    transform: scale(1.02);
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
}

/* 联系我们区域 */
.contact {
    padding: 120px 0;
    background: var(--secondary-bg);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-info h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.contact-info p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 20px;
}

.contact-method i {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.1) 0%, rgba(90, 200, 250, 0.1) 100%);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--brand-primary);
    border: 1px solid rgba(0, 122, 255, 0.15);
    transition: var(--transition-normal);
}

.contact-method:hover i {
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.15) 0%, rgba(90, 200, 250, 0.15) 100%);
    color: var(--brand-secondary);
    border-color: var(--brand-primary);
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(90, 200, 250, 0.25);
}

/* 二维码样式 */
.qr-code-container {
    margin-top: 15px;
    text-align: center;
}

.qr-code {
    width: 100px;
    height: 100px;
    border-radius: 8px;
    border: 2px solid rgba(0, 122, 255, 0.2);
    transition: var(--transition-normal);
}

.qr-code:hover {
    transform: scale(1.05);
    border-color: var(--brand-primary);
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.2);
}

.qr-text {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 8px;
    margin-bottom: 0;
}

.contact-method h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 5px;
    color: var(--text-primary);
}

.contact-method p {
    color: var(--text-secondary);
    margin: 0;
}

.contact-form {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 25px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--text-primary);
    background: var(--card-bg);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.submit-btn {
    width: 100%;
    padding: 14px;
    background: var(--brand-primary);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 1px 4px rgba(0, 122, 255, 0.24);
    position: relative;
    overflow: hidden;
}

.submit-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

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

.submit-btn:hover {
    background: #0071e3;
    transform: scale(1.02);
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
}

/* 页脚 */
.footer {
    background: var(--primary-bg);
    padding: 60px 0 20px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.footer-logo i {
    color: var(--brand-primary);
    font-size: 1.8rem;
    transition: var(--transition-normal);
}

.footer-logo:hover i {
    color: var(--text-primary);
}

.footer-section p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.7;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.1) 0%, rgba(90, 200, 250, 0.1) 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
    border: 1px solid rgba(0, 122, 255, 0.15);
    color: var(--brand-primary);
}

.social-links a:hover {
    background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-secondary) 100%);
    color: var(--card-bg);
    border-color: var(--brand-primary);
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 4px 12px rgba(90, 200, 250, 0.3);
}

.footer-section h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-section ul li a:hover {
    color: var(--brand-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
}

/* 动画 */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes float {

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

    50% {
        transform: translateY(-20px);
    }
}

@keyframes pulse {

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

    50% {
        transform: scale(1.1);
        opacity: 0.5;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

@keyframes growUp {
    from {
        height: 0;
    }

    to {
        height: 100%;
    }
}

/* 响应式设计 */
@media (max-width: 968px) {
    .solution-with-preview {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .article-preview-card {
        position: static;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--secondary-bg);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-lg);
        padding: 20px 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .floating-card {
        display: none;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .solution-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .pricing-card.featured {
        transform: none;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .solutions-tabs {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

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

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

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}