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

:root {
    --primary-color: #6c5ce7;
    --secondary-color: #a29bfe;
    --accent-color: #fd79a8;
    --text-dark: #2d3436;
    --text-light: #636e72;
    --bg-light: #f8f9fa;
    --white: #ffffff;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 15px 40px rgba(0, 0, 0, 0.15);
    --gradient: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 100%);
    --animated-gradient: linear-gradient(135deg, #ff6b6b, #ff9ff3, #feca57, #ffe66d, #1dd1a1, #48dbfb, #7efff5, #6c5ce7, #c56cf0, #a29bfe, #ffb8b8, #ff6b6b);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
}

.container {
    max-width: 80%;
    min-width: 1300px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.logo-icon {
    width: 32px;
    height: 32px;
}

.footer-logo {
    width: 24px;
    height: 24px;
    vertical-align: middle;
    margin-right: 8px;
}

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

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    cursor: pointer;
}

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

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

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

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    transition: var(--transition);
}

/* 首页区域 */
.hero-section {
    position: relative;
    background: var(--animated-gradient);
    background-size: 400% 400%;
    color: var(--white);
    padding: 150px 0 150px;
    overflow: hidden;
    animation: gradientShift 40s cubic-bezier(0.4, 0, 0.2, 1) infinite alternate;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

@keyframes gradientShift {
    0% {
        background-position: 0% 0%;
    }
    8% {
        background-position: 15% 10%;
    }
    18% {
        background-position: 35% 5%;
    }
    30% {
        background-position: 50% 20%;
    }
    45% {
        background-position: 65% 15%;
    }
    60% {
        background-position: 80% 25%;
    }
    75% {
        background-position: 90% 10%;
    }
    90% {
        background-position: 95% 30%;
    }
    100% {
        background-position: 100% 0%;
    }
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    text-shadow: 2px 2px 3px rgba(0, 0, 0, 0.1);
}

.highlight {
    color: var(--accent-color);
    position: relative;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
}

.btn-primary {
    background: var(--white);
    color: var(--primary-color);
}

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

.btn-secondary {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}

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

.hero-stats {
    display: flex;
    gap: 3rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2rem;
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.stat-label {
    opacity: 0.9;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.hero-image {
    position: relative;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

.placeholder-image,
.placeholder-effect,
.placeholder-video {
    background: rgba(255, 255, 255, 0.1);
    border: 2px dashed rgba(255, 255, 255, 0.3);
    border-radius: 15px;
    padding: 4rem 2rem;
    text-align: center;
    backdrop-filter: blur(10px);
}

.placeholder-image i,
.placeholder-effect i,
.placeholder-video i {
    font-size: 4rem;
    opacity: 0.5;
    margin-bottom: 1rem;
}

.placeholder-image p,
.placeholder-effect p {
    opacity: 0.8;
    font-size: 1.1rem;
}

.hero-wave {
    position: absolute;
    bottom: -20px;
    left: 0;
    width: 100%;
    z-index: 1;
}

/* 功能特性区域 */
.features-section {
    padding: 120px 0 100px;
    background: var(--white);
    position: relative;
    z-index: 2;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
    cursor: pointer;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--white);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-light);
}

/* 动画效果展示区域 */
.effects-section {
    padding: 100px 0;
    background: var(--bg-light);
    position: relative;
    z-index: 2;
}

.effects-showcase {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

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

.effect-preview {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
}

.effect-preview:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-hover);
}

.placeholder-effect {
    padding: 3rem 2rem;
}

.effect-item h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.effect-item p {
    color: var(--text-light);
}

.video-demo {
    margin-top: 4rem;
    text-align: center;
}

.video-demo h3 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--text-dark);
}

.placeholder-video {
    max-width: 900px;
    margin: 0 auto;
    background: var(--white);
    padding: 4rem;
}

.placeholder-video span {
    display: block;
    margin-top: 1rem;
    color: var(--text-light);
    font-size: 0.9rem;
}

/* 价格方案区域 */
.pricing-section {
    padding: 100px 0;
    background: var(--white);
    position: relative;
    z-index: 2;
}

.pricing-single-card {
    max-width: 800px;
    margin: 3rem auto 0;
}

.pricing-combined {
    background: var(--white);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    border: 2px solid transparent;
    cursor: pointer;
}

.pricing-combined:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.pricing-combined.featured {
    border-color: var(--primary-color);
}

.pricing-combined.featured:hover {
    transform: translateY(-10px);
}

.pricing-content {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--bg-light);
}

.single-section {
    text-align: center;
    padding: 2rem;
    border-radius: 15px;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.single-section:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.free-trial-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.5rem;
    border-radius: 30px;
    background: linear-gradient(135deg, #00b894 0%, #00cec9 100%);
    color: var(--white);
    font-weight: 600;
    margin-bottom: 1.5rem;
    animation: badgeBounce 2s infinite;
}

@keyframes badgeBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.free-trial-badge i {
    font-size: 1.2rem;
}

.single-section h4 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.single-section p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.feature-list {
    list-style: none;
    margin-bottom: 2rem;
    text-align: left;
    padding: 0 1rem;
}

.feature-list li {
    padding: 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.feature-list .fa-check {
    color: #00b894;
}

.features-list {
    margin: 2rem 0;
    padding: 0 2rem;
}

.features-list .feature-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.8rem;
    text-align: left;
}

@media (max-width: 768px) {
    .features-list .feature-list {
        grid-template-columns: 1fr;
    }
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

.cta-buttons .btn {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.cta-buttons .btn {
    flex: 1;
    max-width: 220px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.cta-buttons .btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.cta-buttons .btn-primary {
    background: var(--gradient);
    border: none;
}

.cta-buttons .btn-outline {
    background: var(--white);
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.cta-buttons .btn-outline:hover {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

.cta-buttons i {
    margin-right: 0.5rem;
}

/* 价格容器在特色卡片中的特殊样式 */
.pricing-card.featured .discount {
    background: linear-gradient(135deg, #ff6b6b 0%, #ffa502 100%);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient);
    color: var(--white);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
}

.pricing-header {
    text-align: center;
    margin-bottom: 2rem;
}

.pricing-header h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.price {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0.3rem;
    margin-bottom: 0.5rem;
}

.price-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.original-price {
    font-size: 1.2rem;
    color: var(--text-light);
    text-decoration: line-through;
    opacity: 0.7;
}

.current-price {
    display: flex;
    align-items: flex-start;
    gap: 0.3rem;
}

.currency {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
}

.amount {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--primary-color);
}

.discount {
    background: var(--accent-color);
    color: var(--white);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-top: 0.5rem;
}

.duration {
    color: var(--text-light);
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-features li {
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--bg-light);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.pricing-features .fa-check {
    color: #00b894;
}

.pricing-features .fa-times {
    color: #d63031;
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
    width: 100%;
    justify-content: center;
}

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--white);
}

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

/* 下载区域 */
.download-section {
    padding: 100px 0;
    background: var(--animated-gradient);
    background-size: 400% 400%;
    color: var(--white);
    animation: gradientShift 50s cubic-bezier(0.4, 0, 0.2, 1) infinite alternate;
}

.download-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.download-text h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.download-text > p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.btn-download {
    background: var(--white);
    color: var(--text-dark);
    padding: 1.5rem 2.5rem;
    border-radius: 15px;
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.btn-download:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.btn-download i {
    font-size: 2rem;
}

.btn-download span {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.btn-download strong {
    font-size: 1.2rem;
    margin-bottom: 0.3rem;
}

.btn-download small {
    font-size: 0.85rem;
    opacity: 0.7;
}

.system-requirements {
    margin-top: 3rem;
}

.system-requirements h4 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.system-requirements ul {
    list-style: none;
}

.system-requirements li {
    padding: 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.system-requirements i {
    color: var(--accent-color);
}

.download-image .placeholder-image {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
}

/* 页脚 */
.footer {
    background: var(--text-dark);
    color: var(--white);
    padding: 4rem 0 2rem;
    position: relative;
    z-index: 2;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1.5rem;
}

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

.footer-section li {
    margin-bottom: 0.8rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--white);
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.7;
}

.beian-info {
    margin-top: 0.5rem;
    font-size: 0.9rem;
}

.beian-info a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.beian-info a:hover {
    color: var(--white);
    text-decoration: underline;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    z-index: 999;
    cursor: pointer;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

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

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

    .nav-toggle {
        display: flex;
    }

    .hero-content,
    .download-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

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

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

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

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

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

    .download-text h2 {
        font-size: 2rem;
    }
}

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

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card,
.effect-item,
.pricing-card {
    animation: fadeInUp 0.6s ease-out;
}