/* Base Styles */
:root {
    --color-light: #f5f5f5;
    --color-dark: #1a1a1a;
    --color-gray: #606060;
    --color-accent: #a09080;
    --transition: all 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Serif JP', serif;
    color: var(--color-light);
    background-color: var(--color-dark);
    overflow-x: hidden;
    line-height: 1.6;
}

/* Splash Screen */
.splash-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-dark);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.splash-logo {
    font-size: 3rem;
    font-weight: 300;
    letter-spacing: 0.2em;
    opacity: 0;
    transform: scale(0.8);
}

/* Scroll Icon */
.scroll-icon {
    position: fixed;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 100;
    opacity: 0;
}

.scroll-text {
    font-size: 0.8rem;
    letter-spacing: 0.2em;
    margin-bottom: 8px;
    font-weight: 300;
}

.scroll-indicator {
    width: 1px;
    height: 50px;
    background: linear-gradient(to bottom, var(--color-light), transparent);
    position: relative;
}

.scroll-indicator::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background-color: var(--color-light);
    animation: scrollDown 2s infinite;
}

@keyframes scrollDown {
    0% {
        opacity: 1;
        transform: translateY(0) translateX(-50%);
    }
    100% {
        opacity: 0;
        transform: translateY(30px) translateX(-50%);
    }
}

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

.hero-slider {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1.5s ease;
}

.hero-slide.active {
    opacity: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    padding: 0 20px;
}

.hero-title {
    font-size: 4rem;
    font-weight: 300;
    letter-spacing: 0.3em;
    margin-bottom: 20px;
    transform: translateY(30px);
    opacity: 0;
    transition: var(--transition);
}

.hero-subtitle {
    font-size: 1.2rem;
    font-weight: 300;
    letter-spacing: 0.2em;
    transform: translateY(30px);
    opacity: 0;
    transition: var(--transition);
}

.gradient-text {
    background: linear-gradient(90deg, #a09080, #d0d0d0);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 2px 10px rgba(160, 144, 128, 0.3);
}

/* Business Section */
.business-section {
    min-height: 100vh;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 100px 0;
}

.business-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.business-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
}

.business-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 300;
    letter-spacing: 0.2em;
    margin-bottom: 60px;
    text-align: center;
    transform: translateY(30px);
    opacity: 0;
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 40px;
}

.business-item {
    background-color: rgba(30, 30, 30, 0.7);
    padding: 30px;
    border-radius: 4px;
    transform: translateY(50px);
    opacity: 0;
    transition: transform 0.5s ease, opacity 0.5s ease;
    transform-style: preserve-3d;
}

.business-item h3 {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 20px;
    letter-spacing: 0.1em;
    transform: skewX(-5deg);
    display: inline-block;
}

.business-item p {
    font-weight: 300;
    line-height: 1.8;
    word-spacing: 0.1em;
}

.highlight {
    position: relative;
    display: inline-block;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 30%;
    background-color: rgba(160, 144, 128, 0.3);
    z-index: -1;
    transform: skewX(-15deg);
}

/* Footer */
footer {
    text-align: center;
    padding: 30px 0;
    background-color: var(--color-dark);
}

footer p {
    font-size: 0.8rem;
    font-weight: 300;
    letter-spacing: 0.1em;
    color: var(--color-gray);
}

/* Responsive Styles */
@media screen and (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .business-grid {
        grid-template-columns: 1fr;
    }
}