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

:root {
    --primary-blue: #2563eb;
    --secondary-blue: #60a5fa;
    --dark-blue: #1e3a8a;
    --accent-yellow: #fbbf24;
    --accent-orange: #fb923c;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --bg-white: #ffffff;
    --bg-light: #f9fafb;
    --bg-section: #f3f4f6;
    --border-light: #e5e7eb;
}

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

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

/* Header */
header {
    background: var(--bg-white);
    padding: 16px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-light);
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo img {
    height: 36px;
    width: auto;
}

.logo-text {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.header-cta {
    background: var(--primary-blue);
    color: white;
    padding: 10px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    transition: all 0.2s ease;
    border: 2px solid transparent;
}

.header-cta:hover {
    background: var(--dark-blue);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

/* Hero Section */
.hero {
    margin-top: 70px;
    padding: 100px 0 80px;
    background: linear-gradient(to bottom, var(--bg-white), var(--bg-light));
}

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

.hero h1 {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--text-primary);
    letter-spacing: -0.03em;
}

.hero-subtitle {
    font-size: 22px;
    color: var(--text-secondary);
    margin-bottom: 48px;
    font-weight: 400;
    line-height: 1.5;
}

/* Hero Visual - Desktop (screens larger than 800px) */
@media (min-width: 801px) {
    .hero-visual {
        width: 90%;
        max-width: 1080px;
        height: 600px;
        margin: 60px auto 0;
        background: var(--bg-white);
        border-radius: 16px;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
        border: 1px solid var(--border-light);
        background-image: url("../img/hero.png");
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
    }
}

/* Hero Visual - Tablet (screens between 601px and 800px) */
@media (min-width: 601px) and (max-width: 800px) {
    .hero-visual {
        width: 85%;
        height: 450px;
        margin: 50px auto 0;
        background: var(--bg-white);
        border-radius: 12px;
        box-shadow: 0 15px 30px rgba(0, 0, 0, 0.08);
        border: 1px solid var(--border-light);
        background-image: url("../img/hero.png");
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
    }
}

/* Hero Visual - Mobile (screens smaller than 600px) */
@media (max-width: 600px) {
    .hero-visual {
        width: calc(100% - 32px);
        height: 300px;
        margin: 40px auto 0;
        background: var(--bg-white);
        border-radius: 12px;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
        border: 1px solid var(--border-light);
        background-image: url("./img/hero.png");
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
    }
}

/* Features Section */
.features {
    padding: 100px 0;
    background: var(--bg-white);
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--bg-light);
    padding: 40px;
    border-radius: 12px;
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
}

.feature-card:hover {
    background: var(--bg-white);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.06);
    transform: translateY(-2px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-blue);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    font-size: 24px;
    color: white;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

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

/* Solutions Section */
.solutions {
    padding: 100px 0;
    background: var(--bg-section);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.solution-item {
    background: var(--bg-white);
    padding: 32px;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
}

.solution-item:hover {
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.04);
    transform: translateY(-2px);
}

.solution-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--secondary-blue), var(--primary-blue));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 28px;
    color: white;
}

/* Platform Section */
.platform {
    padding: 100px 0;
    background: var(--bg-white);
}

.platform-content {
    display: grid;
    /* grid-template-columns: 1fr 1fr; */
    gap: 80px;
    align-items: center;
}

.platform-text h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.platform-text p {
    font-size: 17px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.7;
}

.platform-features {
    margin-top: 32px;
}

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

.check-icon {
    width: 24px;
    height: 24px;
    background: var(--primary-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 14px;
    flex-shrink: 0;
    margin-top: 2px;
}

/* Benefits Section */
.benefits {
    padding: 100px 0;
    background: var(--bg-section);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    max-width: 900px;
    margin: 0 auto;
}

.benefit-item {
    display: flex;
    align-items: start;
    gap: 20px;
    padding: 24px;
    background: var(--bg-white);
    border-radius: 12px;
    border: 1px solid var(--border-light);
}

.benefit-number {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--accent-yellow), var(--accent-orange));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 20px;
    flex-shrink: 0;
}

.benefit-content h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.benefit-content p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* CTA Section */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--dark-blue), var(--primary-blue));
    text-align: center;
    color: white;
}

.cta-content h2 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.cta-content p {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.cta-button {
    display: inline-block;
    background: white;
    color: var(--primary-blue);
    padding: 16px 40px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 18px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.cta-button:hover {
    transform: scale(1.02);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

/* Footer */
footer {
    padding: 40px 0;
    background: var(--text-primary);
    color: white;
    text-align: center;
}

.footer-content p {
    opacity: 0.8;
    font-size: 15px;
}

/* Responsive - Tablet */
@media (max-width: 968px) {
    .hero h1 {
        font-size: 42px;
    }

    .hero-subtitle {
        font-size: 20px;
    }

    .hero {
        padding: 80px 0 60px;
    }

    .platform-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

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

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

    .section-title {
        font-size: 36px;
    }

    .features,
    .solutions,
    .platform,
    .benefits,
    .cta-section {
        padding: 60px 0;
    }
}

/* Responsive - Mobile */
@media (max-width: 640px) {
    .container {
        padding: 0 16px;
    }

    .hero h1 {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 18px;
        margin-bottom: 32px;
    }

    .hero {
        padding: 60px 0 40px;
        margin-top: 60px;
    }

    .section-title {
        font-size: 28px;
    }

    .section-description {
        font-size: 16px;
    }

    .header-content {
        gap: 16px;
    }

    .logo svg {
        width: 180px;
        height: auto;
    }

    .header-cta {
        padding: 8px 20px;
        font-size: 14px;
    }

    .features,
    .solutions,
    .platform,
    .benefits,
    .cta-section {
        padding: 40px 0;
    }

    .cta-content h2 {
        font-size: 28px;
    }

    .cta-content p {
        font-size: 16px;
    }

    .cta-button {
        padding: 14px 32px;
        font-size: 16px;
    }

    .platform-text h2 {
        font-size: 28px;
    }

    .platform-text p {
        font-size: 16px;
    }

    .feature-card {
        padding: 32px 24px;
    }

    .solution-item {
        padding: 24px;
    }

    .benefit-item {
        padding: 20px;
    }
}