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

:root {
    --primary: #667eea;
    --primary-dark: #5568d3;
    --secondary: #764ba2;
    --accent: #f093fb;
    --text-dark: #1a202c;
    --text-gray: #4a5568;
    --text-light: #718096;
    --bg-light: #f7fafc;
    --bg-white: #fff;
    --border: #e2e8f0;
    --shadow: rgba(0, 0, 0, .1);
    --shadow-lg: rgba(0, 0, 0, .15);
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%)
}

html {
    scroll-behavior: smooth
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, .95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    transition: all .3s ease
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-dark);
    text-decoration: none
}

.logo-icon {
    width: 40px;
    height: 40px;
    position: relative
}

.animated-logo {
    display: inline-block;
    position: relative
}

.logo-cloud,
.logo-petals {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transform-origin: center center
}

.logo-cloud {
    transform: scale(0.33)
}

.logo-petals {
    animation: rotate-logo 10s linear infinite;
    transform: scale(1.1)
}

@keyframes rotate-logo {
    from {
        transform: rotate(0deg) scale(1.1)
    }

    to {
        transform: rotate(360deg) scale(1.1)
    }
}

.brand-name {
    color: #5B6FE8
}

.nav-menu {
    display: flex;
    gap: 40px;
    list-style: none
}

.nav-link {
    color: var(--text-gray);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    transition: color .3s ease;
    position: relative
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: width .3s ease
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 10px
}

.hamburger span {
    width: 25px;
    height: 2px;
    background: var(--text-dark);
    transition: all .3s ease
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 70px;
    overflow: hidden
}

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

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: .3;
    animation: float 20s infinite ease-in-out
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: var(--primary);
    top: -200px;
    left: -200px;
    animation-delay: 0s
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--secondary);
    bottom: -100px;
    right: -100px;
    animation-delay: -7s
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: var(--accent);
    top: 50%;
    right: 10%;
    animation-delay: -14s
}

@keyframes float {

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

    33% {
        transform: translate(30px, -30px) scale(1.1)
    }

    66% {
        transform: translate(-20px, 20px) scale(.9)
    }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding: 80px 20px
}

.hero-text {
    z-index: 1
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    color: var(--text-dark)
}

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

.hero-subtitle {
    font-size: 20px;
    color: var(--text-gray);
    margin-bottom: 40px;
    line-height: 1.6
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all .3s ease;
    border: none;
    cursor: pointer
}

.btn-primary {
    background: var(--gradient);
    color: #fff;
    box-shadow: 0 4px 15px rgba(102, 126, 234, .4)
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, .5)
}

.btn-secondary {
    background: #fff;
    color: var(--primary);
    border: 2px solid var(--primary)
}

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

/* Hero Image */
.hero-image {
    position: relative;
    z-index: 1
}

.mockup-container {
    perspective: 1000px
}

.mockup-window {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, .2);
    overflow: hidden;
    transform: rotateY(-5deg) rotateX(5deg);
    transition: transform .5s ease
}

.mockup-window:hover {
    transform: rotateY(0deg) rotateX(0deg)
}

.mockup-header {
    background: linear-gradient(to bottom, #f5f5f5, #e5e5e5);
    padding: 12px 16px;
    border-bottom: 1px solid #d0d0d0
}

.mockup-dots {
    display: flex;
    gap: 8px
}

.mockup-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #ff5f57
}

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

.mockup-dots span:nth-child(3) {
    background: #28ca42
}

.mockup-content {
    padding: 20px;
    background: #fafafa
}

.photo-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px
}

.photo-item {
    aspect-ratio: 1;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 8px;
    opacity: 0;
    animation: fadeInUp .6s ease forwards
}

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

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

/* Features Section */
.features {
    padding: 120px 0;
    background: var(--bg-light)
}

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

.section-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark)
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-gray)
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 32px;
    margin-bottom: 80px
}

.feature-card {
    background: #fff;
    padding: 40px 32px;
    border-radius: 16px;
    transition: all .3s ease;
    border: 1px solid var(--border)
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px var(--shadow-lg);
    border-color: var(--primary)
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, rgba(102, 126, 234, .1) 0%, rgba(118, 75, 162, .1) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px
}

.feature-icon svg {
    width: 28px;
    height: 28px;
    color: var(--primary)
}

.feature-title {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-dark)
}

.feature-desc {
    font-size: 15px;
    color: var(--text-gray);
    line-height: 1.7
}

/* Advantages Section */
.advantages-section {
    background: #fff;
    padding: 60px 40px;
    border-radius: 20px;
    box-shadow: 0 10px 40px var(--shadow)
}

.advantages-title {
    text-align: center;
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 48px;
    color: var(--text-dark)
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px
}

.advantage-item {
    text-align: center
}

.advantage-number {
    font-size: 48px;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px
}

.advantage-label {
    font-size: 16px;
    color: var(--text-gray);
    font-weight: 500
}

/* Download Section */
.download {
    padding: 120px 0;
    background: #fff
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-bottom: 60px
}

.download-card {
    position: relative;
    background: #fff;
    border: 2px solid var(--border);
    border-radius: 20px;
    padding: 40px 32px;
    transition: all .3s ease
}

.download-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px var(--shadow-lg)
}

.download-card.featured {
    border-color: var(--primary);
    background: linear-gradient(to bottom, #fff, rgba(102, 126, 234, .02))
}

.download-badge {
    position: absolute;
    top: -12px;
    right: 24px;
    background: var(--gradient);
    color: #fff;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600
}

.download-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, rgba(102, 126, 234, .1) 0%, rgba(118, 75, 162, .1) 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px
}

.download-icon svg {
    width: 32px;
    height: 32px;
    color: var(--primary)
}

.download-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-dark)
}

.download-version {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 24px
}

.download-features {
    list-style: none;
    margin-bottom: 32px
}

.download-features li {
    padding: 10px 0;
    color: var(--text-gray);
    font-size: 15px;
    border-bottom: 1px solid var(--border)
}

.download-features li:last-child {
    border-bottom: none
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px
}

.btn-download {
    width: 100%;
    background: var(--gradient);
    color: #fff;
    padding: 14px 24px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all .3s ease
}

.btn-download:hover:not(.disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, .4)
}

.btn-download.disabled {
    opacity: .5;
    cursor: not-allowed
}

.download-link {
    text-align: center;
    color: var(--primary);
    font-size: 14px;
    text-decoration: none;
    font-weight: 500
}

.download-link:hover {
    text-decoration: underline
}

.system-requirements {
    background: var(--bg-light);
    padding: 32px;
    border-radius: 16px;
    text-align: center
}

.system-requirements h4 {
    font-size: 20px;
    margin-bottom: 20px;
    color: var(--text-dark)
}

.requirements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px
}

.requirement-item {
    color: var(--text-gray);
    font-size: 15px
}

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

/* Pricing Section */
.pricing {
    padding: 120px 0;
    background: var(--bg-light)
}

.pricing-toggle {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 60px
}

.toggle-btn {
    padding: 12px 24px;
    background: #fff;
    border: 2px solid var(--border);
    border-radius: 12px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-gray);
    cursor: pointer;
    transition: all .3s ease;
    display: flex;
    align-items: center;
    gap: 8px
}

.toggle-btn.active {
    background: var(--gradient);
    color: #fff;
    border-color: transparent
}

.save-badge {
    background: rgba(255, 255, 255, .3);
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 12px
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-bottom: 40px
}

.pricing-card {
    position: relative;
    background: #fff;
    border: 2px solid var(--border);
    border-radius: 20px;
    padding: 40px 32px;
    transition: all .3s ease
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px var(--shadow-lg)
}

.pricing-card.featured {
    border-color: var(--primary);
    background: linear-gradient(to bottom, #fff, rgba(102, 126, 234, .02))
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient);
    color: #fff;
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600
}

.pricing-header {
    text-align: center;
    margin-bottom: 24px
}

.plan-name {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-dark)
}

.plan-desc {
    font-size: 15px;
    color: var(--text-gray)
}

.pricing-price {
    text-align: center;
    margin-bottom: 32px
}

.currency {
    font-size: 24px;
    color: var(--text-gray);
    vertical-align: middle;
    margin-right: 4px
}

.amount {
    font-size: 56px;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text
}

.period {
    font-size: 18px;
    color: var(--text-gray)
}

.pricing-features {
    list-style: none;
    margin-bottom: 32px
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    color: var(--text-gray);
    font-size: 15px
}

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

.btn-pricing {
    width: 100%;
    padding: 14px 24px;
    background: #fff;
    color: var(--primary);
    border: 2px solid var(--primary);
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all .3s ease
}

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

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

.btn-pricing.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, .4)
}

.pricing-note {
    text-align: center;
    padding: 24px;
    background: #fff;
    border-radius: 12px;
    color: var(--text-gray)
}

.pricing-note strong {
    color: var(--text-dark)
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: #fff;
    padding: 60px 0 30px
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 60px;
    margin-bottom: 40px
}

.footer-brand {
    max-width: 300px
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px
}

.footer-desc {
    color: rgba(255, 255, 255, .7);
    font-size: 14px;
    line-height: 1.6
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px
}

.footer-column h4 {
    font-size: 16px;
    margin-bottom: 16px;
    font-weight: 600
}

.footer-column ul {
    list-style: none
}

.footer-column li {
    margin-bottom: 12px
}

.footer-column a {
    color: rgba(255, 255, 255, .7);
    text-decoration: none;
    font-size: 14px;
    transition: color .3s ease
}

.footer-column a:hover {
    color: #fff
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .1);
    padding-top: 24px;
    text-align: center;
    color: rgba(255, 255, 255, .5);
    font-size: 14px
}

.footer-bottom p {
    margin-bottom: 8px
}

.beian-link {
    color: rgba(255, 255, 255, .5);
    text-decoration: none;
    transition: color .3s ease
}

.beian-link:hover {
    color: rgba(255, 255, 255, .8)
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, .6);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px)
}

.modal.active {
    display: flex
}

.modal-content {
    background: #fff;
    border-radius: 20px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideIn .3s ease
}

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

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 32px;
    border-bottom: 1px solid var(--border)
}

.modal-header h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-dark)
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--bg-light);
    border-radius: 8px;
    font-size: 24px;
    color: var(--text-gray);
    cursor: pointer;
    transition: all .3s ease;
    display: flex;
    align-items: center;
    justify-content: center
}

.modal-close:hover {
    background: var(--border)
}

.modal-body {
    padding: 32px
}

.payment-info {
    background: var(--bg-light);
    padding: 24px;
    border-radius: 12px;
    margin-bottom: 32px
}

.plan-info h4 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-dark)
}

.plan-price {
    font-size: 32px;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text
}

.payment-methods {
    display: grid;
    gap: 16px
}

.payment-method {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: #fff;
    border: 2px solid var(--border);
    border-radius: 12px;
    cursor: pointer;
    transition: all .3s ease;
    font-size: 16px;
    font-weight: 600
}

.payment-method:hover {
    border-color: var(--primary);
    background: rgba(102, 126, 234, .02)
}

.payment-method svg {
    width: 32px;
    height: 32px
}

/* 响应式设计 */
@media (max-width:1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px
    }

    .hero-title {
        font-size: 42px
    }

    .hero-image {
        order: -1
    }

    .advantages-grid {
        grid-template-columns: repeat(2, 1fr)
    }
}

@media (max-width:768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background: #fff;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 30px var(--shadow);
        transition: left .3s ease
    }

    .nav-menu.active {
        left: 0
    }

    .hamburger {
        display: flex
    }

    .hero-title {
        font-size: 36px
    }

    .hero-subtitle {
        font-size: 18px
    }

    .section-title {
        font-size: 32px
    }

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

    .advantages-grid {
        grid-template-columns: 1fr;
        gap: 24px
    }

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

    .footer-links {
        grid-template-columns: 1fr;
        gap: 30px
    }
}

@media (max-width:480px) {
    .hero-title {
        font-size: 28px
    }

    .hero-buttons {
        flex-direction: column
    }

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

    .section-title {
        font-size: 28px
    }

    .advantage-number {
        font-size: 36px
    }
}