/* ========================================
   CSS Variables & Base Styles
   ======================================== */
:root {
    --primary: #5856D6;
    --primary-light: #8B85E8;
    --secondary: #34C759;
    --accent-red: #FF3B30;
    --accent-orange: #FF9500;
    --accent-yellow: #FFCC00;
    --accent-blue: #007AFF;
    --bg-dark: #0C0C12;
    --bg-section: #101018;
    --bg-card: #18182A;
    --bg-card-hover: #20203A;
    --text-primary: #F0F0F5;
    --text-secondary: #A0A0B8;
    --text-muted: #6B6B80;
    --border: rgba(255, 255, 255, 0.07);
    --gradient: linear-gradient(135deg, #FF3B30 0%, #FF9500 18%, #FFCC00 36%, #34C759 54%, #007AFF 76%, #5856D6 100%);
    --gradient-hover: linear-gradient(135deg, #FF5147 0%, #FFA733 18%, #FFD633 36%, #4ED876 54%, #339AFF 76%, #7272E0 100%);
    --gradient-subtle: linear-gradient(135deg, #FF3B30 0%, #FF9500 25%, #34C759 50%, #007AFF 75%, #5856D6 100%);
    --shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Noto Sans SC', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

a {
    color: var(--primary-light);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--secondary);
}

strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all var(--transition);
}

.navbar.scrolled {
    padding: 10px 0;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.1rem;
}

.nav-logo:hover {
    color: var(--text-primary);
}

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-link {
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition);
}

.nav-link:hover {
    color: var(--text-primary);
    background: rgba(88, 86, 214, 0.1);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-bg canvas {
    width: 100%;
    height: 100%;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    padding: 0 24px;
}

.hero-badge {
    display: inline-block;
    padding: 6px 20px;
    border: 1px solid rgba(88, 86, 214, 0.3);
    border-radius: 30px;
    font-size: 0.85rem;
    color: var(--primary-light);
    background: rgba(88, 86, 214, 0.08);
    margin-bottom: 32px;
    letter-spacing: 2px;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 12px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle-en {
    font-family: 'Inter', sans-serif;
    font-size: clamp(1rem, 2vw, 1.4rem);
    color: var(--text-secondary);
    font-weight: 300;
    letter-spacing: 4px;
    text-transform: uppercase;
    margin-bottom: 24px;
}

.hero-desc {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.hero-philosophy {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 40px;
    font-style: italic;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.8rem;
    animation: fadeInUp 1s ease 2s both;
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    border-right: 2px solid var(--text-muted);
    border-bottom: 2px solid var(--text-muted);
    transform: rotate(45deg);
    animation: bounceDown 2s ease infinite;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition);
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient);
    color: #fff;
    box-shadow: 0 4px 20px rgba(88, 86, 214, 0.3);
}

.btn-primary:hover {
    background: var(--gradient-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(88, 86, 214, 0.4);
    color: #fff;
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.3);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
}

/* ========================================
   Section Common
   ======================================== */
section {
    padding: 120px 0;
}

.section-label {
    font-family: 'Inter', sans-serif;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--secondary);
    text-transform: uppercase;
    letter-spacing: 4px;
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.section-desc {
    color: var(--text-secondary);
    max-width: 700px;
    font-size: 1.05rem;
    margin-bottom: 60px;
}

/* ========================================
   Mission Section
   ======================================== */
.mission {
    background: var(--bg-section);
}

.mission-content {
    max-width: 800px;
    margin: 0 auto 60px;
}

.mission-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 16px;
}

.mission-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.mission-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
    transition: all var(--transition);
}

.mission-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-4px);
    border-color: rgba(88, 86, 214, 0.2);
}

.mission-card-icon {
    color: var(--primary);
    margin-bottom: 20px;
}

.mission-card h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.mission-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========================================
   About Section
   ======================================== */
.about {
    background: var(--bg-dark);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.about-block {
    margin-bottom: 40px;
}

.about-block h3 {
    font-size: 1.4rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.about-block p {
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.8;
}

.vision-text {
    font-size: 1.6rem;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px !important;
}

.about-values {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px;
}

.about-values h3 {
    font-size: 1.3rem;
    margin-bottom: 24px;
}

.value-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    margin-bottom: 20px;
}

.value-item:last-child {
    margin-bottom: 0;
}

.value-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--gradient);
    flex-shrink: 0;
    margin-top: 8px;
}

.value-item strong {
    display: block;
    margin-bottom: 4px;
    font-size: 1rem;
}

.value-item p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 0;
}

.about-team {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.about-team h3 {
    font-size: 1.3rem;
    margin-bottom: 16px;
}

.about-team p {
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.8;
}

.team-highlight {
    font-size: 1.05rem;
    color: var(--primary-light) !important;
    font-weight: 500;
    border-left: 3px solid var(--primary);
    padding-left: 16px;
    margin-top: 16px !important;
}

/* ========================================
   Products Section
   ======================================== */
.products {
    background: var(--bg-section);
}

.product-category {
    margin-bottom: 80px;
}

.product-category:last-child {
    margin-bottom: 0;
}

.category-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 32px;
    padding-left: 16px;
    border-left: 3px solid var(--primary);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.product-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    position: relative;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    border-color: rgba(88, 86, 214, 0.3);
    transform: translateY(-4px);
}

.product-card.featured {
    border-color: rgba(88, 86, 214, 0.3);
    background: linear-gradient(180deg, rgba(88, 86, 214, 0.08) 0%, var(--bg-card) 40%);
}

.product-badge {
    position: absolute;
    top: -10px;
    right: 24px;
    background: var(--gradient);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: 20px;
}

.product-card h4 {
    font-size: 1.3rem;
    margin-bottom: 8px;
}

.product-tagline {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 20px;
}

.product-price {
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
}

.price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.price-period {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.price-alt {
    display: block;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 4px;
}

.product-features {
    list-style: none;
    flex: 1;
    margin-bottom: 24px;
}

.product-features li {
    padding: 6px 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.product-features li::before {
    content: '✓';
    color: var(--secondary);
    margin-right: 8px;
    font-weight: 700;
}

/* Enterprise Grid */
.enterprise-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.enterprise-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: all var(--transition);
}

.enterprise-card:hover {
    border-color: rgba(88, 86, 214, 0.2);
    background: var(--bg-card-hover);
}

.enterprise-icon {
    color: var(--primary);
    margin-bottom: 16px;
}

.enterprise-card h4 {
    font-size: 1.05rem;
    margin-bottom: 16px;
    line-height: 1.4;
}

.enterprise-card ul {
    list-style: none;
}

.enterprise-card li {
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding: 3px 0;
    padding-left: 16px;
    position: relative;
}

.enterprise-card li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
    opacity: 0.5;
    transform: translateY(-50%);
}

/* ========================================
   Technology Section
   ======================================== */
.technology {
    background: var(--bg-dark);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 60px;
}

.tech-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px;
    transition: all var(--transition);
}

.tech-card:hover {
    border-color: rgba(88, 86, 214, 0.2);
}

.tech-number {
    font-family: 'Inter', sans-serif;
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.4;
    margin-bottom: 12px;
    line-height: 1;
}

.tech-card h4 {
    font-size: 1.2rem;
    margin-bottom: 16px;
}

.tech-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 10px;
    line-height: 1.7;
}

.tech-card ul {
    list-style: none;
}

.tech-card li {
    font-size: 0.9rem;
    color: var(--text-secondary);
    padding: 4px 0;
    padding-left: 16px;
    position: relative;
}

.tech-card li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary);
}

.opensource {
    text-align: center;
    padding: 48px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}

.opensource h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
}

.opensource > p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.opensource-badges {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(88, 86, 214, 0.1);
    border: 1px solid rgba(88, 86, 214, 0.2);
    border-radius: 30px;
    font-size: 0.9rem;
    color: var(--primary-light);
    transition: all var(--transition);
}

.badge:hover {
    background: rgba(88, 86, 214, 0.2);
}

/* ========================================
   Culture Section
   ======================================== */
.culture {
    background: var(--bg-section);
}

.culture-logo-section {
    display: flex;
    align-items: center;
    gap: 60px;
    margin-bottom: 60px;
    padding: 48px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}

.infinity-logo img.culture-logo-img {
    width: 200px;
    height: 200px;
    border-radius: 20px;
    object-fit: cover;
    filter: drop-shadow(0 0 20px rgba(88, 86, 214, 0.3));
}

.logo-meaning {
    flex: 1;
}

.meaning-item {
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.meaning-item:last-child {
    border-bottom: none;
}

.meaning-item strong {
    color: var(--primary-light);
}

.philosophy-quote {
    margin-bottom: 60px;
    text-align: center;
}

.philosophy-quote blockquote {
    font-size: 1.4rem;
    font-weight: 500;
    line-height: 1.8;
    margin-bottom: 16px;
    font-style: italic;
}

.philosophy-quote cite {
    display: block;
    font-size: 0.9rem;
    color: var(--text-muted);
    font-style: normal;
    margin-top: 8px;
}

.philosophy-quote > p {
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

.culture-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.culture-block {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px;
}

.culture-block h4 {
    font-size: 1.2rem;
    margin-bottom: 16px;
}

.culture-block p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.8;
}

.work-styles {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.work-style {
    display: flex;
    align-items: center;
    gap: 16px;
}

.work-style strong {
    color: var(--primary-light);
    min-width: 80px;
    font-size: 0.95rem;
}

.work-style span {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ========================================
   Contact Section
   ======================================== */
.contact {
    background: var(--bg-dark);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-block {
    margin-bottom: 32px;
}

.contact-block h4 {
    font-size: 1.15rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.contact-item {
    padding: 6px 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.contact-item a {
    color: var(--primary-light);
}

.contact-label {
    display: inline-block;
    min-width: 72px;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.join-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px;
    margin-bottom: 24px;
}

.join-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
}

.join-card > p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.7;
}

.join-benefits {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.join-benefits span {
    padding: 6px 14px;
    background: rgba(52, 199, 89, 0.08);
    border: 1px solid rgba(52, 199, 89, 0.15);
    border-radius: 20px;
    font-size: 0.82rem;
    color: var(--secondary);
}

.social-links h4 {
    font-size: 1.1rem;
    margin-bottom: 12px;
}

.social-grid {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.social-link {
    display: inline-flex;
    align-items: center;
    padding: 8px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: all var(--transition);
}

.social-link:hover {
    border-color: rgba(88, 86, 214, 0.3);
    color: var(--text-primary);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--bg-section);
    padding: 48px 0 32px;
    border-top: 1px solid var(--border);
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--border);
}

.footer-logo {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: color var(--transition);
}

.footer-links a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer-legal a {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer-legal a:hover {
    color: var(--text-secondary);
}

/* ========================================
   Animations
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounceDown {
    0%, 100% {
        transform: rotate(45deg) translateY(0);
    }
    50% {
        transform: rotate(45deg) translateY(8px);
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
    .mission-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .product-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

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

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

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

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

    .culture-logo-section {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 768px) {
    section {
        padding: 80px 0;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--bg-dark);
        flex-direction: column;
        padding: 80px 24px 24px;
        border-left: 1px solid var(--border);
        transition: right var(--transition);
    }

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

    .nav-toggle {
        display: flex;
    }

    .mission-cards {
        grid-template-columns: 1fr;
    }

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

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

    .footer-top {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .hero-scroll {
        display: none;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

    .container {
        padding: 0 16px;
    }

    .hero-badge {
        font-size: 0.75rem;
    }
}