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

:root {
    --primary-color: #2e7d54;
    --primary-dark: #1f5a3d;
    --primary-light: #3d9968;
    --secondary-color: #f8f9fa;
    --text-color: #1a1a1a;
    --text-light: #666;
    --text-lighter: #999;
    --border-color: #e5e7eb;
    --success-color: #4caf50;
    --warning-color: #ff9800;
    --danger-color: #f44336;
    --bg-light: #f9fafb;
    --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(0,0,0,0.1);
    --shadow-xl: 0 12px 40px rgba(0,0,0,0.12);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.7;
    color: var(--text-color);
    background-color: #fff;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 24px;
}

.nav-brand h2 {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 700;
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
}

.nav-menu a:not(.btn-primary):hover {
    color: var(--primary-color);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 28px;
    height: 3px;
    background: var(--text-color);
    transition: var(--transition);
    border-radius: 2px;
}

/* 按钮样式 */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: #fff;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 4px 12px rgba(46, 125, 84, 0.25);
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(46, 125, 84, 0.35);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: #fff;
    transform: translateY(-2px);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.05rem;
    border-radius: var(--radius-lg);
}

/* 首屏 - 左右结构 */
.hero {
    margin-top: 70px;
    padding: 80px 0;
    background: linear-gradient(135deg, #f9fafb 0%, #ffffff 100%);
    min-height: calc(100vh - 70px);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(46, 125, 84, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(46, 125, 84, 0.08);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(46, 125, 84, 0.15);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.7;
    }
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    color: var(--text-color);
    line-height: 1.2;
    letter-spacing: -1.5px;
}

.hero-title .gradient-text {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
    max-width: 500px;
}

.hero-features-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.hero-feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.95rem;
    color: var(--text-color);
}

.hero-feature-item .icon {
    width: 20px;
    height: 20px;
    color: var(--primary-color);
    flex-shrink: 0;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-image-wrapper {
    position: relative;
    width: 100%;
    max-width: 550px;
}

.hero-main-image {
    width: 100%;
    height: auto;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    background: linear-gradient(135deg, #e0f2e9 0%, #d4e9dd 100%);
    padding: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 装饰性SVG插图 */
.hero-illustration {
    width: 100%;
    height: auto;
}

/* 浮动卡片 */
.floating-card {
    position: absolute;
    background: #fff;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: float 3s ease-in-out infinite;
}

.floating-card-1 {
    top: 10%;
    left: -10%;
    animation-delay: 0s;
}

.floating-card-2 {
    bottom: 15%;
    right: -5%;
    animation-delay: 1s;
}

.floating-card-3 {
    top: 50%;
    right: -15%;
    animation-delay: 2s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-15px);
    }
}

.floating-card-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
}

.floating-card-content h4 {
    font-size: 0.9rem;
    color: var(--text-color);
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.floating-card-content p {
    font-size: 0.8rem;
    color: var(--text-light);
}

/* 区块通用样式 */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-badge {
    display: inline-block;
    background: rgba(46, 125, 84, 0.08);
    color: var(--primary-color);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 1rem;
    border: 1px solid rgba(46, 125, 84, 0.15);
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-color);
    letter-spacing: -1px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* 核心优势 */
.features {
    background: #fff;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    padding: 2rem;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    background: #fff;
    border-color: var(--primary-light);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, rgba(46, 125, 84, 0.1) 0%, rgba(61, 153, 104, 0.15) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: #fff;
    transform: scale(1.05);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-color);
    font-weight: 700;
}

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

/* 套餐价格 */
.pricing {
    background: var(--bg-light);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
    max-width: 1100px;
    margin: 0 auto;
}

.pricing-card {
    background: #fff;
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    border: 2px solid transparent;
}

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

.pricing-card.featured {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
    transform: scale(1.03);
}

.pricing-card.featured:hover {
    transform: scale(1.03) translateY(-8px);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    right: 20px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: #fff;
    padding: 0.5rem 1.2rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(46, 125, 84, 0.3);
}

.pricing-tag {
    color: var(--text-lighter);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.pricing-title {
    font-size: 1.6rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.pricing-desc {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    margin-bottom: 1.5rem;
}

.pricing-price .currency {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-color);
}

.pricing-price .amount {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1;
    margin: 0 0.3rem;
}

.pricing-price .period {
    font-size: 1.1rem;
    color: var(--text-light);
}

.pricing-features {
    list-style: none;
    margin-bottom: 1.5rem;
}

.pricing-features li {
    padding: 0.7rem 0;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
}

.check-icon {
    width: 20px;
    height: 20px;
    background: rgba(46, 125, 84, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--primary-color);
}

.btn-pricing {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 1rem;
    background: var(--bg-light);
    color: var(--primary-color);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 700;
    transition: var(--transition);
    border: 2px solid var(--primary-color);
}

.btn-pricing:hover {
    background: var(--primary-color);
    color: #fff;
}

.btn-pricing.btn-featured {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: #fff;
    border: none;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-grid {
        gap: 3rem;
    }

    .hero-title {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: #fff;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-md);
        padding: 2rem 0;
    }

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

    .nav-toggle {
        display: flex;
    }

    .hero {
        min-height: auto;
        padding: 60px 0;
    }

    .hero-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .hero-visual {
        order: -1;
    }

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

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

    .floating-card {
        display: none;
    }

    .section-header h2 {
        font-size: 2rem;
    }

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

    .pricing-card.featured {
        transform: scale(1);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
        letter-spacing: -1px;
    }

    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }

    .pricing-price .amount {
        font-size: 2.5rem;
    }
}