:root {
    /* Color Palette - Clean & White based */
    --color-bg: #ffffff;
    --color-bg-alt: #f8f9fa;
    --color-text: #2d3436;
    --color-text-muted: #636e72;
    --color-primary: #0984e3;
    /* Professional blue */
    --color-accent: #00cec9;
    --color-border: #dfe6e9;

    /* Typography */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-heading: 'Noto Sans JP', sans-serif;

    /* Spacing */
    --section-padding: 80px 20px;
    --container-width: 1000px;

    /* Effects */
    --shadow-subtle: 0 4px 6px rgba(0, 0, 0, 0.05);
    --transition-speed: 0.3s;
}

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

body {
    font-family: var(--font-main);
    color: var(--color-text);
    line-height: 1.6;
    background-color: var(--color-bg);
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

section {
    padding: var(--section-padding);
}

.hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #ffffff 0%, #f1f2f6 100%);
    text-align: left;
}

.hero-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 50px;
    align-items: center;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 24px;
    font-weight: 800;
    line-height: 1.2;
}

.hero p {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    margin-bottom: 40px;
}

.hero-image {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    object-fit: cover;
}

.section-title {
    font-size: 2rem;
    margin-bottom: 40px;
    text-align: center;
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--color-primary);
    border-radius: 2px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background: #fff;
    padding: 30px;
    border-radius: 12px;
    border: 1px solid var(--color-border);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-subtle);
}

footer {
    background: var(--color-bg-alt);
    padding: 60px 0 20px;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

/* Contact Form */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 20px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

input,
textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-family: inherit;
    font-size: 1rem;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity var(--transition-speed);
}

.btn:hover {
    opacity: 0.9;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    :root {
        --section-padding: 40px 20px;
    }

    .nav-content {
        flex-direction: column;
        gap: 15px;
    }

    .hero {
        padding-top: 40px;
        text-align: center;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero-text {
        order: 1;
    }

    .hero-visual {
        order: 2;
    }

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

    .card {
        padding: 20px;
    }
}