/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-primary: #0071e3;
    --color-primary-hover: #0077ed;
    --color-text: #1d1d1f;
    --color-text-secondary: #86868b;
    --color-bg: #ffffff;
    --color-bg-secondary: #f5f5f7;
    --color-border: #d2d2d7;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --spacing-2xl: 8rem;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.nav {
    padding: 0 var(--spacing-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 44px;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-link {
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 400;
    transition: var(--transition);
    position: relative;
    padding: var(--spacing-xs) 0;
}

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

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

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 22px;
    height: 2px;
    background-color: var(--color-text);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: var(--spacing-2xl) var(--spacing-md) var(--spacing-xl);
    background: linear-gradient(180deg, #ffffff 0%, #f5f5f7 100%);
    overflow: hidden;
}

.hero-content {
    max-width: 1200px;
    text-align: center;
    z-index: 2;
    animation: fadeInUp 1s ease-out;
}

.hero-badge {
    display: inline-block;
    padding: 8px 16px;
    background-color: rgba(0, 113, 227, 0.1);
    color: var(--color-primary);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.02em;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 5.5rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.04em;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.title-line {
    display: block;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
    font-weight: 400;
    line-height: 1.5;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.cta-button {
    padding: 12px 24px;
    border-radius: 22px;
    font-size: 0.9375rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
    display: inline-block;
    border: none;
    cursor: pointer;
}

.cta-button.primary {
    background-color: var(--color-primary);
    color: white;
}

.cta-button.primary:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.cta-button.secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

.cta-button.secondary:hover {
    background-color: rgba(0, 113, 227, 0.1);
}

.hero-visual {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
    pointer-events: none;
}

.floating-elements {
    position: relative;
    width: 100%;
    height: 100%;
}

.floating-circle {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(0, 113, 227, 0.1) 0%, rgba(0, 113, 227, 0.05) 100%);
    animation: float 20s infinite ease-in-out;
}

.circle-1 {
    width: 300px;
    height: 300px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.circle-2 {
    width: 200px;
    height: 200px;
    top: 60%;
    right: 15%;
    animation-delay: 5s;
}

.circle-3 {
    width: 250px;
    height: 250px;
    bottom: 10%;
    left: 50%;
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.3;
    }
    50% {
        transform: translate(30px, -30px) scale(1.1);
        opacity: 0.5;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Section Styles */
section {
    padding: var(--spacing-2xl) var(--spacing-md);
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
}

.section-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.section-description {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    font-weight: 400;
}

/* Services Section */
.services {
    background-color: var(--color-bg);
    padding: var(--spacing-2xl) var(--spacing-md);
}

.services-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.service-card {
    background-color: var(--color-bg);
    padding: var(--spacing-lg);
    border-radius: 18px;
    transition: var(--transition);
    border: 1px solid var(--color-border);
    opacity: 0;
    transform: translateY(30px);
}

.service-card[data-aos] {
    opacity: 1;
    transform: translateY(0);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.service-icon-wrapper {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(0, 113, 227, 0.1) 0%, rgba(0, 113, 227, 0.05) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    transition: var(--transition);
}

.service-card:hover .service-icon-wrapper {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    transform: scale(1.1);
}

.service-icon {
    width: 28px;
    height: 28px;
    stroke: var(--color-primary);
    transition: var(--transition);
}

.service-card:hover .service-icon {
    stroke: white;
}

.service-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.service-description {
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Feature Highlight Section */
.feature-highlight {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-2xl) var(--spacing-md);
    overflow: hidden;
}

.feature-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.feature-text {
    z-index: 2;
}

.feature-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.feature-description {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.feature-list {
    list-style: none;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    font-size: 1.0625rem;
    color: var(--color-text);
}

.check-icon {
    width: 24px;
    height: 24px;
    stroke: var(--color-primary);
    stroke-width: 3;
    flex-shrink: 0;
}

.feature-visual {
    position: relative;
    height: 400px;
}

.visual-card {
    position: absolute;
    width: 280px;
    height: 200px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(0, 113, 227, 0.1) 0%, rgba(0, 113, 227, 0.05) 100%);
    border: 1px solid var(--color-border);
    overflow: hidden;
    transition: var(--transition);
}

.card-1 {
    top: 0;
    left: 0;
    animation: floatCard 6s infinite ease-in-out;
}

.card-2 {
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    animation: floatCard 8s infinite ease-in-out;
    animation-delay: 2s;
}

.card-3 {
    bottom: 0;
    left: 20%;
    animation: floatCard 7s infinite ease-in-out;
    animation-delay: 4s;
}

.card-glow {
    position: absolute;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(0, 113, 227, 0.2) 0%, transparent 70%);
    opacity: 0;
    transition: var(--transition);
}

.visual-card:hover .card-glow {
    opacity: 1;
}

.visual-card:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

@keyframes floatCard {
    0%, 100% {
        transform: translate(0, 0);
    }
    50% {
        transform: translate(10px, -10px);
    }
}

/* Advantages Section */
.advantages {
    background-color: var(--color-bg);
    padding: var(--spacing-2xl) var(--spacing-md);
}

.advantages-container {
    max-width: 1000px;
    margin: 0 auto;
}

.advantage-row {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    border-radius: 16px;
    transition: var(--transition);
    opacity: 0;
    transform: translateX(-30px);
}

.advantage-row[data-aos] {
    opacity: 1;
    transform: translateX(0);
}

.advantage-row:hover {
    background-color: var(--color-bg-secondary);
}

.advantage-row[data-aos="fade-left"] {
    transform: translateX(30px);
}

.advantage-row[data-aos="fade-left"][data-aos] {
    transform: translateX(0);
}

.advantage-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-primary);
    opacity: 0.2;
    line-height: 1;
    flex-shrink: 0;
    min-width: 80px;
}

.advantage-content {
    flex: 1;
}

.advantage-title {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.advantage-description {
    font-size: 1.0625rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* Contact Section */
.contact {
    background: linear-gradient(180deg, var(--color-bg-secondary) 0%, var(--color-bg) 100%);
    padding: var(--spacing-2xl) var(--spacing-md);
}

.contact-container {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.contact-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.contact-description {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    text-decoration: none;
    color: var(--color-text);
    font-size: 1.0625rem;
    font-weight: 500;
    transition: var(--transition);
    min-width: 280px;
    justify-content: center;
}

.contact-link:hover {
    border-color: var(--color-primary);
    background-color: rgba(0, 113, 227, 0.05);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.contact-icon {
    width: 24px;
    height: 24px;
    stroke: var(--color-primary);
    stroke-width: 2;
}

/* Footer */
.footer {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-xl) var(--spacing-md) var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

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

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.footer-brand {
    flex: 1;
}

.footer-logo {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.footer-tagline {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.footer-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--transition);
}

.footer-link:hover {
    color: var(--color-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .hero {
        min-height: 90vh;
        padding: var(--spacing-xl) var(--spacing-md);
    }

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

    .cta-button {
        width: 100%;
        text-align: center;
    }

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

    .feature-content {
        grid-template-columns: 1fr;
    }

    .feature-visual {
        height: 300px;
        margin-top: var(--spacing-lg);
    }

    .visual-card {
        width: 200px;
        height: 140px;
    }

    .advantage-row {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .advantage-number {
        font-size: 2rem;
        min-width: auto;
    }

    .contact-link {
        min-width: 100%;
    }

    .footer-content {
        flex-direction: column;
    }

    .footer-links {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-xl: 3rem;
        --spacing-2xl: 4rem;
    }

    section {
        padding: var(--spacing-xl) var(--spacing-sm);
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }
}