:root {
    --primary-color: #6C5CE7;
    --primary-dark: #5B4CDB;
    --primary-light: #A29BFE;
    --secondary-color: #00CEC9;
    --accent-color: #FDCB6E;
    --bg-dark: #0F0F23;
    --bg-card: #1A1A2E;
    --bg-card-hover: #252542;
    --text-primary: #FFFFFF;
    --text-secondary: #B2BEC3;
    --text-muted: #636E72;
    --border-color: #2D2D44;
    --gradient-primary: linear-gradient(135deg, #6C5CE7 0%, #00CEC9 100%);
    --gradient-secondary: linear-gradient(135deg, #6C5CE7 0%, #A29BFE 100%);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 15, 35, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.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: 12px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 20px;
}

.nav-logo img {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--gradient-primary);
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 400;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a:hover {
    color: var(--primary-light);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

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

.download-nav-btn {
    background: var(--gradient-primary);
    padding: 10px 25px;
    border-radius: 30px;
    color: white !important;
    font-weight: 500;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.download-nav-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(108, 92, 231, 0.4);
}

.download-nav-btn::after {
    display: none;
}

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

.menu-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 100px 20px 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 20%, rgba(108, 92, 231, 0.15) 0%, transparent 50%);
    animation: pulse 8s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    right: -30%;
    width: 150%;
    height: 150%;
    background: radial-gradient(circle at 70% 80%, rgba(0, 206, 201, 0.1) 0%, transparent 50%);
    animation: pulse 10s ease-in-out infinite reverse;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

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

.hero-content {
    text-align: left;
}

.app-info {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.hero-logo {
    width: 60px;
    height: 60px;
    border-radius: 15px;
    background: var(--gradient-primary);
    box-shadow: 0 10px 30px rgba(108, 92, 231, 0.3);
}

.app-info h1 {
    font-size: 36px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 16px;
    color: var(--secondary-color);
    margin-top: 5px;
}

.hero-description {
    font-size: 16px;
    color: var(--text-secondary);
    margin: 30px 0;
    line-height: 1.8;
}

.version-info {
    display: flex;
    gap: 30px;
    margin-bottom: 30px;
}

.version-info span {
    font-size: 14px;
    color: var(--text-muted);
}

.download-btn {
    display: inline-block;
    background: var(--gradient-primary);
    padding: 15px 40px;
    border-radius: 35px;
    color: white;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 10px 30px rgba(108, 92, 231, 0.4);
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(108, 92, 231, 0.5);
}

.screenshots {
    position: relative;
    height: 500px;
}

.screenshot-card {
    position: absolute;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    transition: transform 0.5s ease, opacity 0.5s ease;
}

.screenshot-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

#screenshot1 {
    width: 280px;
    height: 480px;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    z-index: 3;
    animation: float1 4s ease-in-out infinite;
}

#screenshot2 {
    width: 250px;
    height: 430px;
    left: 0;
    top: 30%;
    transform: translateY(-50%);
    z-index: 2;
    opacity: 0.8;
    animation: float2 5s ease-in-out infinite;
}

#screenshot3 {
    width: 250px;
    height: 430px;
    right: 0;
    top: 70%;
    transform: translateY(-50%);
    z-index: 2;
    opacity: 0.8;
    animation: float3 5s ease-in-out infinite;
}

@keyframes float1 {
    0%, 100% { transform: translate(-50%, -50%) translateY(0); }
    50% { transform: translate(-50%, -50%) translateY(-15px); }
}

@keyframes float2 {
    0%, 100% { transform: translateY(-50%) translateX(0); }
    50% { transform: translateY(-50%) translateX(-10px); }
}

@keyframes float3 {
    0%, 100% { transform: translateY(-50%) translateX(0); }
    50% { transform: translateY(-50%) translateX(10px); }
}

.features {
    padding: 100px 20px;
    background: var(--bg-dark);
}

.section-title {
    text-align: center;
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 60px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: var(--bg-card);
    padding: 40px 30px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.feature-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 40px rgba(108, 92, 231, 0.2);
}

.feature-icon {
    width: 60px;
    height: 60px;
    border-radius: 15px;
    background: var(--gradient-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    color: white;
}

.feature-icon svg {
    width: 28px;
    height: 28px;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.feature-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.reviews {
    padding: 100px 20px;
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-card) 100%);
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.review-card {
    background: var(--bg-card);
    padding: 40px 30px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.review-card:hover {
    transform: translateY(-5px);
    border-color: var(--secondary-color);
}

.reviewer-info {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 25px;
}

.avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.avatar svg {
    width: 24px;
    height: 24px;
}

.reviewer-info h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.rating {
    color: var(--accent-color);
    font-size: 14px;
}

.review-card p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    font-style: italic;
}

.faq {
    padding: 100px 20px;
    background: var(--bg-dark);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border-radius: 15px;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: var(--primary-color);
}

.faq-question {
    width: 100%;
    padding: 25px 30px;
    background: none;
    border: none;
    text-align: left;
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color 0.3s ease;
}

.faq-question:hover {
    color: var(--primary-light);
}

.faq-question::after {
    content: '+';
    font-size: 24px;
    color: var(--primary-light);
    transition: transform 0.3s ease;
}

.faq-question.active::after {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer p {
    padding: 0 30px 25px;
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.7;
}

.download {
    padding: 100px 20px;
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-dark) 100%);
    position: relative;
    overflow: hidden;
}

.download::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(108, 92, 231, 0.1) 0%, transparent 70%);
}

.download-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.download-logo {
    width: 100px;
    height: 100px;
    border-radius: 25px;
    background: var(--gradient-primary);
    margin-bottom: 30px;
    box-shadow: 0 20px 60px rgba(108, 92, 231, 0.4);
}

.download-content h2 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 15px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.download-content p {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.download-content .version-info {
    justify-content: center;
    margin-bottom: 40px;
}

.download-buttons {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.download-btn-large {
    display: inline-block;
    background: var(--gradient-primary);
    padding: 20px 60px;
    border-radius: 40px;
    color: white;
    text-decoration: none;
    font-weight: 700;
    font-size: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 15px 40px rgba(108, 92, 231, 0.5);
    min-width: 280px;
}

.download-btn-large:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 50px rgba(108, 92, 231, 0.6);
}

.download-tip {
    font-size: 14px;
    color: var(--text-muted);
}

footer {
    padding: 30px 20px;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

footer p {
    font-size: 14px;
    color: var(--text-muted);
}

@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

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

    .app-info {
        justify-content: center;
    }

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

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

    .screenshots {
        height: 450px;
    }

    #screenshot1 {
        width: 240px;
        height: 420px;
    }

    #screenshot2 {
        width: 210px;
        height: 370px;
    }

    #screenshot3 {
        width: 210px;
        height: 370px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(15, 15, 35, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: center;
        padding: 30px 0;
        gap: 20px;
        transform: translateY(-100%);
        opacity: 0;
        transition: all 0.3s ease;
    }

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

    .menu-toggle {
        display: flex;
    }

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

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

    .screenshots {
        height: 350px;
    }

    #screenshot1 {
        width: 180px;
        height: 320px;
    }

    #screenshot2 {
        width: 150px;
        height: 270px;
        opacity: 0.6;
    }

    #screenshot3 {
        width: 150px;
        height: 270px;
        opacity: 0.6;
    }

    .download-content h2 {
        font-size: 32px;
    }

    .download-btn-large {
        padding: 15px 40px;
        font-size: 18px;
        min-width: 240px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 80px 15px 60px;
    }

    .hero-description {
        font-size: 14px;
    }

    .version-info {
        flex-direction: column;
        gap: 10px;
    }

    .screenshots {
        height: 280px;
    }

    #screenshot1 {
        width: 140px;
        height: 250px;
    }

    #screenshot2 {
        width: 120px;
        height: 210px;
        opacity: 0.5;
    }

    #screenshot3 {
        width: 120px;
        height: 210px;
        opacity: 0.5;
    }

    .section-title {
        font-size: 26px;
    }

    .feature-card {
        padding: 30px 20px;
    }

    .download-content h2 {
        font-size: 28px;
    }
}