:root {
    --primary-color: #DB547C;
    --primary-dark: #b8335e;
    --primary-light: #f0759a;
    --secondary-color: #f0759a;
    --accent-color: #ff8a5c;
    --dark-color: #121212;
    --light-color: #f5f7fa;
    --gray-color: #8a8a8a;
    --border-color: #e0e0e0;
    --card-bg: #fff;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow: 0 8px 24px rgba(0,0,0,0.12);
    --shadow-lg: 0 16px 48px rgba(0,0,0,0.16);
    --radius-sm: 8px;
    --radius: 16px;
    --radius-lg: 24px;
    --transition: all .3s cubic-bezier(0.4,0,0.2,1);
    --gradient-primary: linear-gradient(135deg, #DB547C 0%, #ff8a5c 100%);
    --gradient-secondary: linear-gradient(135deg, #DB547C 0%, #ff8a5c 100%);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Montserrat', 'Noto Sans SC', sans-serif;
    background-color: var(--light-color);
    color: var(--dark-color);
    line-height: 1.6;
    overflow-x: hidden;
    font-weight: 400;
}

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

header {
    background-color: rgba(255,255,255,0.98);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 18px 0;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    transition: var(--transition);
}

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

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
    text-decoration: none;
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 22px;
    font-weight: 700;
    position: relative;
    overflow: hidden;
}
.logo-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.logo-icon::after {
    content: '';
    position: absolute;
    top: -5px;
    right: -5px;
    width: 20px;
    height: 20px;
    background: rgba(255,255,255,0.3);
    border-radius: 50%;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-main {
    font-size: 26px;
    font-weight: 800;
    color: var(--dark-color);
    letter-spacing: -0.5px;
    line-height: 1;
}

.logo-sub {
    font-size: 12px;
    color: var(--primary-color);
    font-weight: 600;
    margin-top: 4px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

nav {
    display: flex;
    align-items: center;
    gap: 40px;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 35px;
}

nav a {
    color: var(--dark-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    transition: var(--transition);
    position: relative;
    padding: 8px 0;
}

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

nav a.active {
    color: var(--primary-color);
}

nav a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.download-btn {
    background: var(--gradient-primary);
    color: white;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 700;
    font-size: 14px;
    transition: var(--transition);
    border: 0;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    letter-spacing: .5px;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(219, 84, 124, 0.3);
}

.mobile-menu-btn {
    display: none;
    background: 0;
    border: 0;
    color: var(--dark-color);
    font-size: 24px;
    cursor: pointer;
    z-index: 1001;
}

main {
    margin-top: 100px;
}

section {
    padding: 100px 0;
}

.hero {
    padding: 100px 0 120px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(219, 84, 124, 0.03) 0%, rgba(255, 138, 92, 0.03) 100%);
}

.hero-background {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(135deg, rgba(219, 84, 124, 0.05) 0%, rgba(255, 138, 92, 0.05) 100%);
    clip-path: polygon(25% 0, 100% 0, 100% 100%, 0% 100%);
    z-index: 0;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 560px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background-color: rgba(219, 84, 124, 0.1);
    color: var(--primary-color);
    padding: 10px 20px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 30px;
}

.hero-title {
    font-size: 52px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 25px;
    color: var(--dark-color);
    letter-spacing: -1px;
}

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

.hero-subtitle {
    font-size: 18px;
    color: var(--gray-color);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
    margin-top: 40px;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 15px;
}

.hero-feature-icon {
    width: 50px;
    height: 50px;
    background: rgba(219, 84, 124, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 20px;
}

.hero-feature-text h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 5px;
    color: var(--dark-color);
}

.hero-feature-text p {
    font-size: 14px;
    color: var(--gray-color);
}

.hero-image {
    position: relative;
}

.hero-image img {
    width: 60%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transform: perspective(1000px) rotateY(-10deg);
    transition: var(--transition);
}

.hero-image:hover img {
    transform: perspective(1000px) rotateY(-5deg);
}

.features-section {
    padding: 100px 0;
    background-color: var(--light-color);
}

.section-header {
    text-align: center;
    margin-bottom: 70px;
}

.section-tag {
    display: inline-block;
    background: var(--gradient-secondary);
    color: white;
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.section-title {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 20px;
    color: var(--dark-color);
    line-height: 1.2;
}

.section-subtitle {
    font-size: 18px;
    color: var(--gray-color);
    max-width: 600px;
    margin: 0 auto;
}

.features-container {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 30px;
}

.feature-card {
    background-color: var(--card-bg);
    border-radius: var(--radius);
    padding: 40px;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.feature-card:nth-child(1) {
    grid-column: span 6;
}

.feature-card:nth-child(2) {
    grid-column: span 6;
}

.feature-card:nth-child(3) {
    grid-column: span 4;
}

.feature-card:nth-child(4) {
    grid-column: span 4;
}

.feature-card:nth-child(5) {
    grid-column: span 4;
}

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

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    background: var(--gradient-primary);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, rgba(219, 84, 124, 0.1) 0%, rgba(255, 138, 92, 0.1) 100%);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    color: var(--primary-color);
    font-size: 28px;
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    background: var(--gradient-primary);
    color: white;
}

.feature-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--dark-color);
}

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

.versions-section {
    padding: 100px 0;
    background: linear-gradient(135deg, rgba(106, 90, 205, 0.03) 0%, rgba(138, 43, 226, 0.03) 100%);
}

.versions-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.version-card {
    background-color: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    position: relative;
}

.version-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--secondary-color);
}

.version-header {
    padding: 30px 30px 20px;
    text-align: center;
    position: relative;
    background: linear-gradient(135deg, rgba(106, 90, 205, 0.05) 0%, rgba(138, 43, 226, 0.05) 100%);
}

.version-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-secondary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    font-size: 32px;
    transform: rotate(45deg);
    transition: var(--transition);
}

.version-card:hover .version-icon {
    transform: rotate(0deg);
}

.version-icon i {
    transform: rotate(-45deg);
    transition: var(--transition);
}

.version-card:hover .version-icon i {
    transform: rotate(0deg);
}

.version-name {
    font-size: 22px;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 10px;
}

.version-tag {
    display: inline-block;
    background: var(--secondary-color);
    color: white;
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 700;
    margin-top: 10px;
}

.version-details {
    padding: 25px 30px;
}

.version-detail {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    font-size: 14px;
}

.version-detail:last-child {
    border-bottom: 0;
}

.detail-label {
    color: var(--gray-color);
    font-weight: 500;
}

.detail-value {
    color: var(--dark-color);
    font-weight: 600;
}

.version-footer {
    padding: 0 30px 30px;
    text-align: center;
}

.version-btn {
    display: inline-block;
    background: var(--gradient-secondary);
    color: white;
    padding: 12px 30px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 700;
    transition: var(--transition);
    width: 100%;
    text-align: center;
    letter-spacing: .5px;
}

.version-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(106, 90, 205, 0.3);
}

.testimonials-section {
    padding: 100px 0;
    background-color: var(--light-color);
}

.testimonials-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.testimonial-card {
    background-color: var(--card-bg);
    border-radius: var(--radius);
    padding: 35px;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.testimonial-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.testimonial-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--gradient-primary);
}

.testimonial-header {
    display: flex;
    align-items: center;
    margin-bottom: 25px;
}

.testimonial-avatar {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    overflow: hidden;
    margin-right: 20px;
    border: 3px solid var(--border-color);
    position: relative;
}

.testimonial-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.testimonial-avatar i {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    color: white;
    font-size: 28px;
}

.testimonial-user-info h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 5px;
}

.testimonial-user-info p {
    color: var(--gray-color);
    font-size: 14px;
}

.testimonial-rating {
    color: #ffc107;
    margin-bottom: 20px;
    font-size: 16px;
}

.testimonial-content {
    font-size: 15px;
    color: var(--dark-color);
    line-height: 1.7;
    margin-bottom: 20px;
    font-style: italic;
}

.testimonial-meta {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: var(--gray-color);
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

footer {
    background-color: var(--dark-color);
    color: white;
    padding: 80px 0 40px;
}

.footer-container {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 80px;
    margin-bottom: 60px;
}

.footer-logo {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.footer-logo .logo-icon {
    width: 60px;
    height: 60px;
}

.footer-logo h3 {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 10px;
    color: white;
}

.footer-logo p {
    color: rgba(255,255,255,0.7);
    font-size: 15px;
    line-height: 1.7;
}

.footer-social {
    display: flex;
    gap: 15px;
    margin-top: 25px;
}

.footer-social a {
    width: 45px;
    height: 45px;
    border-radius: 12px;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
    transition: var(--transition);
}

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

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

.footer-column h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 25px;
    color: white;
    position: relative;
    padding-bottom: 10px;
}

.footer-column h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 3px;
}

.footer-column a {
    display: block;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    margin-bottom: 15px;
    font-size: 15px;
    transition: var(--transition);
}

.footer-column a:hover {
    color: white;
    transform: translateX(5px);
}

.copyright {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.5);
    font-size: 14px;
}

@media (max-width: 1200px) {
    .hero-title {
        font-size: 46px;
    }
    .features-container {
        grid-template-columns: 1fr;
    }
    .feature-card {
        grid-column: span 1 !important;
    }
    .hero-image img {
        width: 100%;
    }
}

@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    .hero-background {
        display: none;
    }
    .hero-content {
        text-align: center;
        max-width: 100%;
    }
    .hero-features {
        justify-content: center;
    }
    .footer-container {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    .hero-image img {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }
    nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background-color: white;
        padding: 100px 30px 30px;
        transition: var(--transition);
        z-index: 999;
        box-shadow: var(--shadow-lg);
        overflow-y: auto;
        flex-direction: column;
        align-items: flex-start;
        gap: 30px;
    }
    nav.active {
        right: 0;
    }
    nav ul {
        flex-direction: column;
        gap: 0;
        width: 100%;
    }
    nav a {
        display: block;
        padding: 18px 0;
        border-bottom: 1px solid var(--border-color);
        font-size: 16px;
        width: 100%;
    }
    .header-actions {
        flex-direction: column;
        width: 100%;
    }
    .hero-title {
        font-size: 38px;
    }
    .section-title {
        font-size: 36px;
    }
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
    .hero-image img {
        width: 100%;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 32px;
    }
    .hero-features {
        grid-template-columns: 1fr;
    }
    .section-title {
        font-size: 32px;
    }
    .footer-links {
        grid-template-columns: 1fr;
    }
    .feature-card {
        padding: 30px;
    }
    .hero-image img {
        width: 100%;
    }
}