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

:root {
    --bg-primary: #0a0e17;
    --bg-secondary: #111827;
    --bg-card: #111827;
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.6);
    --text-muted: rgba(255, 255, 255, 0.4);
    --border-color: rgba(255, 255, 255, 0.05);
    --blue-500: #3b82f6;
    --purple-600: #9333ea;
    --green-400: #4ade80;
}

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

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 640px) {
    .container { padding: 0 1.5rem; }
}

@media (min-width: 1024px) {
    .container { padding: 0 2rem; }
}

.gradient-text {
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 50%, #d946ef 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--blue-500), var(--purple-600));
    color: white;
    border: none;
    border-radius: 0.75rem;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: transparent;
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 0.75rem;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
}

.btn-text {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1rem;
    transition: color 0.3s;
}

.btn-text:hover {
    color: white;
}

.btn-rounded {
    border-radius: 9999px;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

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

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 23, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: white;
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 0.75rem;
    background: linear-gradient(135deg, var(--blue-500), var(--purple-600));
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo span {
    font-size: 1.25rem;
    font-weight: 700;
}

.nav-links {
    display: none;
    gap: 2rem;
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
}

.nav-links a:hover,
.nav-links a.active {
    color: white;
}

.nav-buttons {
    display: none;
    align-items: center;
    gap: 1rem;
}

@media (min-width: 768px) {
    .nav-buttons {
        display: flex;
    }
}

.mobile-menu-btn {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

@media (min-width: 768px) {
    .mobile-menu-btn {
        display: none;
    }
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: white;
    transition: all 0.3s;
}

.hero {
    position: relative;
    padding-top: 8rem;
    padding-bottom: 5rem;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(59, 130, 246, 0.3), transparent),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(139, 92, 246, 0.2), transparent),
        radial-gradient(ellipse 50% 30% at 20% 80%, rgba(217, 70, 239, 0.15), transparent);
    background-image: 
        linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
}

.hero-content {
    display: grid;
    gap: 3rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

@media (min-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr 1fr;
    }
}

.version-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 9999px;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    color: #60a5fa;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background: var(--green-400);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

@media (min-width: 640px) {
    .hero h1 { font-size: 3rem; }
}

@media (min-width: 1024px) {
    .hero h1 { font-size: 3.75rem; }
}

.hero-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 32rem;
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

@media (min-width: 640px) {
    .hero-buttons {
        flex-direction: row;
    }
}

.pulse-glow {
    animation: glow 2s ease-in-out infinite;
}

@keyframes glow {
    0%, 100% { box-shadow: 0 0 20px rgba(59, 130, 246, 0.4); }
    50% { box-shadow: 0 0 40px rgba(59, 130, 246, 0.8); }
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.hero-visual {
    position: relative;
    display: none;
}

@media (min-width: 1024px) {
    .hero-visual {
        display: block;
    }
}

.browser-mockup {
    background: linear-gradient(135deg, var(--bg-secondary), #1e293b);
    border-radius: 1rem;
    padding: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    position: relative;
    z-index: 10;
}

.float-animation {
    animation: float 6s ease-in-out infinite;
}

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

.browser-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.browser-dots {
    display: flex;
    gap: 0.5rem;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #ef4444; }
.dot.yellow { background: #eab308; }
.dot.green { background: #22c55e; }

.browser-title {
    margin-left: 1rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.browser-content {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.account-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 0.5rem;
}

.account-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--blue-500), var(--purple-600));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
}

.account-info {
    flex: 1;
}

.account-name {
    height: 12px;
    width: 96px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

.account-sub {
    height: 8px;
    width: 64px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    margin-top: 0.5rem;
}

.account-status {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.75rem;
    color: var(--green-400);
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--green-400);
    border-radius: 50%;
}

.glow-circle {
    position: absolute;
    width: 160px;
    height: 160px;
    border-radius: 50%;
    filter: blur(60px);
}

.glow-circle.blue {
    top: -40px;
    right: -40px;
    background: rgba(59, 130, 246, 0.2);
}

.glow-circle.purple {
    bottom: -40px;
    left: -40px;
    background: rgba(147, 51, 234, 0.2);
}

.stats {
    padding: 4rem 0;
    background: rgba(17, 24, 39, 0.5);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

@media (min-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

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

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

@media (min-width: 640px) {
    .stat-value { font-size: 2.5rem; }
}

.stat-label {
    color: var(--text-muted);
}

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

.section-header h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

@media (min-width: 640px) {
    .section-header h2 { font-size: 2.5rem; }
}

.section-header p {
    color: var(--text-secondary);
    max-width: 42rem;
    margin: 0 auto;
}

.features {
    padding: 5rem 0;
}

.features-grid {
    display: grid;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature-card {
    padding: 1.5rem;
    background: var(--bg-card);
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.feature-card:hover {
    border-color: rgba(59, 130, 246, 0.3);
    transform: translateY(-4px);
}

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 0.75rem;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(147, 51, 234, 0.2));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    color: #60a5fa;
    transition: transform 0.3s;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

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

.use-cases {
    padding: 5rem 0;
    background: rgba(17, 24, 39, 0.3);
}

.use-cases-grid {
    display: grid;
    gap: 1.5rem;
}

@media (min-width: 640px) {
    .use-cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .use-cases-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.use-case-card {
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--bg-secondary), #1e293b);
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all 0.3s ease;
}

.use-case-card:hover {
    border-color: rgba(59, 130, 246, 0.3);
}

.use-case-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    border-radius: 1rem;
    background: linear-gradient(135deg, var(--blue-500), var(--purple-600));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.use-case-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.use-case-card p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.testimonials {
    padding: 5rem 0;
}

.testimonials-grid {
    display: grid;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.testimonial-card {
    padding: 1.5rem;
    background: var(--bg-card);
    border-radius: 1rem;
    border: 1px solid var(--border-color);
}

.stars {
    display: flex;
    gap: 0.25rem;
    margin-bottom: 1rem;
}

.testimonial-content {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 1rem;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.author-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--blue-500), var(--purple-600));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.author-name {
    font-weight: 500;
}

.author-role {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.pricing {
    padding: 5rem 0;
    background: rgba(17, 24, 39, 0.3);
}

.pricing-grid {
    display: grid;
    gap: 2rem;
    max-width: 64rem;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.pricing-card {
    position: relative;
    padding: 2rem;
    background: var(--bg-card);
    border-radius: 1rem;
    border: 1px solid var(--border-color);
}

.pricing-card.popular {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(147, 51, 234, 0.1));
    border-color: rgba(59, 130, 246, 0.3);
}

.popular-badge {
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.25rem 1rem;
    background: linear-gradient(135deg, var(--blue-500), var(--purple-600));
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
}

.pricing-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.pricing-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.pricing-price {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 0.25rem;
}

.pricing-price .price {
    font-size: 2.5rem;
    font-weight: 700;
}

.pricing-price .period {
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

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

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0;
    color: rgba(255, 255, 255, 0.7);
}

.download {
    padding: 5rem 0;
}

.download-box {
    position: relative;
    overflow: hidden;
    border-radius: 1.5rem;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(147, 51, 234, 0.2), rgba(236, 72, 153, 0.2));
    padding: 3rem;
}

.download-box::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(17, 24, 39, 0.8);
}

.download-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.download-content h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

@media (min-width: 640px) {
    .download-content h2 { font-size: 2.5rem; }
}

.download-content > p {
    color: var(--text-secondary);
    max-width: 42rem;
    margin: 0 auto 2rem;
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    justify-content: center;
}

@media (min-width: 640px) {
    .download-buttons {
        flex-direction: row;
    }
}

.download-buttons .version {
    font-size: 0.875rem;
    opacity: 0.7;
}

.download-note {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 1.5rem;
}

.footer {
    padding: 4rem 0;
    background: rgba(17, 24, 39, 0.5);
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    gap: 3rem;
    margin-bottom: 3rem;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

.footer-brand .logo {
    margin-bottom: 1rem;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer-links h4 {
    font-weight: 600;
    margin-bottom: 1rem;
}

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

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
    }
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.seo-keywords {
    font-size: 0.875rem;
}

.articles-page {
    padding-top: 6rem;
    padding-bottom: 5rem;
    min-height: 100vh;
}

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

.articles-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

@media (min-width: 640px) {
    .articles-header h1 { font-size: 3rem; }
}

.articles-header p {
    color: var(--text-secondary);
    max-width: 42rem;
    margin: 0 auto;
}

.articles-grid {
    display: grid;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .articles-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .articles-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.article-card {
    display: block;
    padding: 1.5rem;
    background: var(--bg-card);
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    text-decoration: none;
    color: white;
    transition: all 0.3s ease;
}

.article-card:hover {
    border-color: rgba(59, 130, 246, 0.3);
    transform: translateY(-4px);
}

.article-category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(59, 130, 246, 0.1);
    color: #60a5fa;
    font-size: 0.75rem;
    border-radius: 9999px;
    margin-bottom: 1rem;
}

.article-card h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    transition: color 0.3s;
}

.article-card:hover h2 {
    color: #60a5fa;
}

.article-excerpt {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.article-meta-left {
    display: flex;
    gap: 1rem;
}

.article-meta span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.article-detail {
    padding-top: 6rem;
    padding-bottom: 5rem;
}

.article-back {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 1.5rem;
    transition: color 0.3s;
}

.article-back:hover {
    color: white;
}

.article-detail h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

@media (min-width: 640px) {
    .article-detail h1 { font-size: 2.5rem; }
}

.article-detail-meta {
    display: flex;
    gap: 1.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.article-detail-meta span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.article-content {
    max-width: 48rem;
}

.article-content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.article-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.article-content p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.article-content ul,
.article-content ol {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

.article-content li {
    margin-bottom: 0.5rem;
}

.article-content code {
    background: rgba(59, 130, 246, 0.1);
    color: #60a5fa;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-family: monospace;
}

.article-content pre {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1rem;
    overflow-x: auto;
    margin-bottom: 1rem;
}

.article-content strong {
    color: white;
}

.article-cta {
    margin-top: 3rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border-radius: 1rem;
    border: 1px solid var(--border-color);
}

.article-cta h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.article-cta p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.article-cta a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}