@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;600;700&display=swap");

:root {
    --primary-color: #2a9d8f;
    --primary-dark: #21867a;
    --primary-light: #8ac9b9;
    --secondary-color: #e9c46a;
    --accent-color: #f4a261;
    --text-primary: #264653;
    --text-secondary: #5a7d8c;
    --text-light: #8a9a9f;
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --border-color: #dee2e6;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
    --gradient-primary: linear-gradient(135deg, #2a9d8f 0%, #e9c46a 100%);
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --border-radius: 6px;
    --border-radius-lg: 10px;
    --border-radius-xl: 16px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family:
        "Noto Sans SC",
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Roboto,
        sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

.container-fluid {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 16px;
}

.section-padding {
    padding: 20px 0;
    scroll-margin-top: 80px;
}

@media (max-width: 768px) {
    .section-padding {
        padding: 20px 0;
    }
}

.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 12px 0;
}

.nav-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 8px;
    transition: opacity var(--transition-fast);
}

.logo-link:hover {
    opacity: 0.9;
}

.logo-img {
    width: 36px;
    height: 36px;
    border-radius: 8px;
}

.logo-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-link {
    padding: 8px 12px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--primary-color);
    background: var(--bg-secondary);
}

.nav-cta {
    padding: 10px 16px;
    font-size: 15px;
    font-weight: 600;
    color: white;
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 26px;
    height: 20px;
}

.bar {
    width: 100%;
    height: 3px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-fast);
}

@media (max-width: 768px) {
    .main-nav {
        position: fixed;
        top: 68px;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        align-items: center;
        padding: 16px;
        gap: 8px;
        border-bottom: 1px solid var(--border-color);
        transform: translateY(-150%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }

    .main-nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
}

.hero-area {
    padding: 140px 0 60px;
    background: linear-gradient(to bottom, #f0fdfa, #f8faf9);
    scroll-margin-top: 80px;
}

.hero-content-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 16px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    align-items: center;
}

@media (max-width: 992px) {
    .hero-content-wrapper {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

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

.hero-image-container {
    position: relative;
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image {
    max-width: 100%;
    max-height: 500px;
    object-fit: contain;
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-lg);
}

.hero-text-container {
    display: flex;
    align-items: flex-start;
    justify-content: center;
}

.hero-text-content {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.hero-main-title {
    font-size: 20px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 8px;
    color: var(--text-primary);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@media (max-width: 768px) {
    .hero-main-title {
        font-size: 32px;
    }
}

.hero-subtitle {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.hero-desc {
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.hero-btn-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
}

@media (max-width: 992px) {
    .hero-btn-group {
        align-items: center;
    }
}

.hero-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 24px;
    border-radius: var(--border-radius-lg);
    font-size: 16px;
    font-weight: 600;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.primary-btn {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

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

.version-tag {
    font-size: 14px;
    background: rgba(255, 255, 255, 0.2);
    padding: 2px 8px;
    border-radius: 20px;
}

.platform-info {
    font-size: 14px;
    color: var(--text-light);
}

.section-header-container {
    text-align: center;
    margin-bottom: 20px;
}

.section-header-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    position: relative;
    display: inline-block;
}

.section-header-title::after {
    content: "";
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.section-header-subtitle {
    font-size: 17px;
    color: var(--text-secondary);
}

.features-grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.feature-item {
    background: var(--bg-primary);
    padding: 24px 20px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.feature-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.feature-icon-wrapper {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

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

.feature-text {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.feature-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.feature-desc {
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-secondary);
}

.screenshots-section {
    background: var(--bg-secondary);
    scroll-margin-top: 80px;
}

.gallery-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 16px;
    position: relative;
}

.main-image-container {
    flex: 1;
    max-width: 500px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.main-screenshot {
    max-width: 100%;
    max-height: 500px;
    object-fit: contain;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

.thumbnail-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    max-width: 100px;
    max-height: 75px;
}

.gallery-nav-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: white;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.gallery-nav-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.nav-icon {
    width: 20px;
    height: 20px;
}

.thumbnail-container {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.thumbnail-item {
    width: 100px;
    height: 75px;
    border-radius: var(--border-radius);
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all var(--transition-fast);
    opacity: 0.7;
}

.thumbnail-item:hover {
    opacity: 1;
    transform: scale(1.05);
}

.thumbnail-item.active-thumb {
    border-color: var(--primary-color);
    opacity: 1;
    box-shadow: 0 4px 8px rgba(42, 157, 143, 0.3);
}

.thumbnail-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.articles-grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.article-item {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all var(--transition-fast);
}

.article-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.article-content-wrapper {
    padding: 20px;
}

.article-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.article-title a {
    color: var(--text-primary);
    transition: color var(--transition-fast);
}

.article-title a:hover {
    color: var(--primary-color);
}

.article-meta-info {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.publish-date {
    font-size: 14px;
    color: var(--text-light);
}

.article-summary {
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.read-more-link {
    font-size: 15px;
    font-weight: 600;
    color: var(--primary-color);
    transition: color var(--transition-fast);
}

.read-more-link:hover {
    color: var(--primary-dark);
}

.testimonials-grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.testimonial-item {
    background: var(--bg-primary);
    padding: 24px 20px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.testimonial-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.testimonial-item::before {
    content: "❝";
    position: absolute;
    top: 10px;
    left: 15px;
    font-size: 50px;
    color: var(--primary-light);
    font-family: Georgia, serif;
    line-height: 1;
    opacity: 0.1;
}

.rating-container {
    display: flex;
    gap: 4px;
    margin-bottom: 12px;
}

.star-icon {
    width: 18px;
    height: 18px;
    color: #f59e0b;
}

.testimonial-text {
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 12px;
    font-style: italic;
    position: relative;
    z-index: 1;
    margin-top: 10px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 10px;
}

.author-identity {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.main-footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 20px 0 20px;
}

.footer-content-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    text-align: center;
}

.footer-brand-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-logo {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.footer-brand-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.copyright-text {
    font-size: 14px;
    color: var(--text-light);
}

/* Responsive */
@media (max-width: 768px) {
    .hero-main-title {
        font-size: 28px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .hero-desc {
        font-size: 15px;
    }

    .hero-btn {
        padding: 12px 20px;
        font-size: 15px;
    }

    .section-header-title {
        font-size: 30px;
    }

    .feature-item,
    .testimonial-item {
        padding: 24px 20px;
    }

    .article-content-wrapper {
        padding: 20px;
    }

    .hero-content-wrapper {
        gap: 20px;
    }

    .section-padding {
        padding: 50px 0;
    }
}

@media (max-width: 480px) {
    .hero-main-title {
        font-size: 24px;
    }

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

    .features-grid-container,
    .testimonials-grid-container,
    .articles-grid-container {
        grid-template-columns: 1fr;
    }

    .nav-wrapper {
        padding: 0 12px;
    }

    .container-fluid {
        padding: 0 12px;
    }
}