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

    body {
        font-family: 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
        line-height: 1.8;
        color: #333;
        overflow-x: hidden;
    }

    /* ヘッダー */
    header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        padding: 20px 5%;
        box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
        transition: all 0.3s ease;
    }

    .logo {
        font-size: 32px;
        font-weight: 900;
        background: linear-gradient(135deg, #FF6B35 0%, #FF8C42 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        letter-spacing: 2px;
        text-shadow: 2px 2px 4px rgba(255, 107, 53, 0.1);
    }

    /* ファーストビュー */
    .hero {
        position: relative;
        height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
        overflow: hidden;
        background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    }

    .hero::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: 
            radial-gradient(circle at 20% 30%, rgba(255, 107, 53, 0.15) 0%, transparent 50%),
            radial-gradient(circle at 80% 70%, rgba(255, 140, 66, 0.1) 0%, transparent 50%);
        animation: pulseGradient 8s ease-in-out infinite;
    }

    @keyframes pulseGradient {
        0%, 100% { opacity: 1; transform: scale(1); }
        50% { opacity: 0.8; transform: scale(1.05); }
    }

    .hero-video-bg {
        position: absolute;
        top: 50%;
        left: 50%;
        min-width: 100%;
        min-height: 100%;
        width: auto;
        height: auto;
        transform: translate(-50%, -50%);
        opacity: 0.3;
        filter: blur(3px);
    }

    .hero-content {
        position: relative;
        z-index: 2;
        text-align: center;
        color: white;
        padding: 0 20px;
        animation: fadeInUp 1s ease-out;
    }

    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(40px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .hero h1 {
        font-size: 64px;
        font-weight: 900;
        margin-bottom: 20px;
        letter-spacing: 4px;
        text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        position: relative;
        display: inline-block;
    }

    .hero h1::after {
        content: '';
        position: absolute;
        bottom: -10px;
        left: 50%;
        transform: translateX(-50%);
        width: 80%;
        height: 4px;
        background: linear-gradient(90deg, transparent, #FF6B35, transparent);
        border-radius: 2px;
    }

    .hero p {
        font-size: 20px;
        margin-bottom: 40px;
        letter-spacing: 2px;
        opacity: 0;
        animation: fadeInUp 1s ease-out 0.3s forwards;
    }

    .cta-button {
        display: inline-block;
        padding: 18px 50px;
        background: linear-gradient(135deg, #FF6B35 0%, #FF8C42 100%);
        color: white;
        text-decoration: none;
        border-radius: 50px;
        font-weight: bold;
        font-size: 18px;
        letter-spacing: 1px;
        box-shadow: 0 8px 25px rgba(255, 107, 53, 0.4);
        transition: all 0.3s ease;
        position: relative;
        overflow: hidden;
        opacity: 0;
        animation: fadeInUp 1s ease-out 0.6s forwards;
    }

    .cta-button::before {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        width: 0;
        height: 0;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.3);
        transform: translate(-50%, -50%);
        transition: width 0.6s, height 0.6s;
    }

    .cta-button:hover::before {
        width: 300px;
        height: 300px;
    }

    .cta-button:hover {
        transform: translateY(-3px);
        box-shadow: 0 12px 35px rgba(255, 107, 53, 0.6);
    }

    /* 浮遊する装飾要素 */
    .floating-shape {
        position: absolute;
        border-radius: 50%;
        background: linear-gradient(135deg, rgba(255, 107, 53, 0.2), rgba(255, 140, 66, 0.1));
        animation: float 6s ease-in-out infinite;
    }

    .shape1 { width: 100px; height: 100px; top: 10%; left: 10%; animation-delay: 0s; }
    .shape2 { width: 150px; height: 150px; top: 60%; right: 15%; animation-delay: 2s; }
    .shape3 { width: 80px; height: 80px; bottom: 20%; left: 20%; animation-delay: 4s; }

    @keyframes float {
        0%, 100% { transform: translateY(0px) rotate(0deg); }
        50% { transform: translateY(-30px) rotate(180deg); }
    }

    /* セクション共通スタイル */
    section {
        padding: 100px 5%;
        position: relative;
    }

    .section-title {
        font-size: 48px;
        font-weight: 900;
        text-align: center;
        margin-bottom: 60px;
        position: relative;
        display: inline-block;
        left: 50%;
        transform: translateX(-50%);
    }

    .section-title::before {
        content: '';
        position: absolute;
        bottom: -15px;
        left: 0;
        width: 100%;
        height: 6px;
        background: linear-gradient(90deg, transparent, #FF6B35, transparent);
        border-radius: 3px;
    }

    /* 事業概要セクション */
    .business {
        background: linear-gradient(180deg, #f8f9fa 0%, #ffffff 50%, #f8f9fa 100%);
        position: relative;
    }

    .business::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 300px;
        background: radial-gradient(ellipse at top, rgba(255, 107, 53, 0.05) 0%, transparent 70%);
    }

    .mvv-container {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 40px;
        margin-bottom: 80px;
    }

    .mvv-card {
        background: white;
        padding: 40px 30px;
        border-radius: 20px;
        box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        transition: all 0.4s ease;
        position: relative;
        overflow: hidden;
        transform: translateY(50px);
        opacity: 0;
    }

    .mvv-card.visible {
        transform: translateY(0);
        opacity: 1;
    }

    .mvv-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 5px;
        background: linear-gradient(90deg, #FF6B35, #FF8C42);
    }

    .mvv-card:hover {
        transform: translateY(-10px) rotate(-1deg);
        box-shadow: 0 15px 50px rgba(255, 107, 53, 0.2);
    }

    .mvv-card h3 {
        font-size: 24px;
        color: #FF6B35;
        margin-bottom: 15px;
        font-weight: 900;
        letter-spacing: 1px;
    }

    .mvv-card p {
        font-size: 16px;
        line-height: 1.8;
        color: #555;
    }

    /* 特徴カード */
    .features-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 35px;
        max-width: 1200px;
        margin: 0 auto;
    }

    .feature-card {
        background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
        padding: 40px 25px;
        border-radius: 20px;
        text-align: center;
        box-shadow: 0 6px 25px rgba(0, 0, 0, 0.06);
        transition: all 0.3s ease;
        position: relative;
        transform: translateY(50px);
        opacity: 0;
        border: 2px solid transparent;
    }

    .feature-card.visible {
        transform: translateY(0);
        opacity: 1;
    }

    .feature-card:hover {
        transform: translateY(-8px) scale(1.02);
        box-shadow: 0 12px 40px rgba(255, 107, 53, 0.15);
        border-color: #FF6B35;
    }

    .feature-icon {
        width: 80px;
        height: 80px;
        margin: 0 auto 25px;
        background: linear-gradient(135deg, #FF6B35 0%, #FF8C42 100%);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 36px;
        box-shadow: 0 6px 20px rgba(255, 107, 53, 0.3);
        transition: all 0.3s ease;
        color: white;
    }

    .feature-icon i {
        font-size: 38px;
    }

    .feature-card:hover .feature-icon {
        transform: rotateY(360deg) scale(1.1);
    }

    .feature-card h4 {
        font-size: 20px;
        margin-bottom: 15px;
        color: #333;
        font-weight: 700;
    }

    .feature-card p {
        font-size: 15px;
        color: #666;
        line-height: 1.7;
    }

    /* 会社概要 */
    .company {
        background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
        color: white;
        position: relative;
        overflow: hidden;
    }

    .company::before {
        content: '';
        position: absolute;
        top: -50%;
        right: -10%;
        width: 600px;
        height: 600px;
        background: radial-gradient(circle, rgba(255, 107, 53, 0.15) 0%, transparent 70%);
        border-radius: 50%;
        animation: float 10s ease-in-out infinite;
    }

    .company-info {
        max-width: 800px;
        margin: 0 auto;
        background: rgba(255, 255, 255, 0.05);
        backdrop-filter: blur(10px);
        padding: 50px;
        border-radius: 20px;
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
        border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .company-info table {
        width: 100%;
        border-collapse: separate;
        border-spacing: 0 20px;
    }

    .company-info tr {
        transition: all 0.3s ease;
    }

    .company-info tr:hover {
        transform: translateX(10px);
    }

    .company-info th {
        text-align: left;
        padding: 15px 30px 15px 0;
        font-weight: 700;
        color: #FF8C42;
        white-space: nowrap;
        font-size: 16px;
        border-bottom: 2px solid rgba(255, 107, 53, 0.3);
    }

    .company-info td {
        padding: 15px 0;
        line-height: 1.8;
        border-bottom: 2px solid rgba(255, 255, 255, 0.1);
    }

    /* フッター */
    footer {
        background: linear-gradient(135deg, #0a0a14 0%, #1a1a2e 100%);
        color: white;
        padding: 60px 5% 30px;
        text-align: center;
        position: relative;
    }

    footer::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 4px;
        background: linear-gradient(90deg, transparent, #FF6B35, #FF8C42, transparent);
    }

    .footer-logo {
        font-size: 36px;
        font-weight: 900;
        background: linear-gradient(135deg, #FF6B35 0%, #FF8C42 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        margin-bottom: 30px;
    }

    .footer-contact {
        margin: 30px 0;
        font-size: 16px;
        line-height: 2;
    }

    .footer-contact a {
        color: #FF8C42;
        text-decoration: none;
        transition: all 0.3s ease;
        padding: 5px 10px;
        border-radius: 5px;
    }

    .footer-contact a:hover {
        background: rgba(255, 107, 53, 0.2);
        transform: scale(1.05);
        display: inline-block;
    }

    .copyright {
        margin-top: 40px;
        padding-top: 30px;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        font-size: 14px;
        color: #999;
    }

    /* レスポンシブ */
    @media (max-width: 768px) {
        .hero h1 {
            font-size: 36px;
        }

        .hero p {
            font-size: 16px;
        }

        .section-title {
            font-size: 32px;
        }

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

        .company-info {
            padding: 30px 20px;
        }

        .company-info th,
        .company-info td {
            display: block;
            padding: 10px 0;
        }

        .company-info th {
            border-bottom: none;
            padding-bottom: 5px;
        }
    }

    /* スクロールバーのカスタマイズ */
    ::-webkit-scrollbar {
        width: 10px;
    }

    ::-webkit-scrollbar-track {
        background: #1a1a2e;
    }

    ::-webkit-scrollbar-thumb {
        background: linear-gradient(135deg, #FF6B35, #FF8C42);
        border-radius: 5px;
    }

    ::-webkit-scrollbar-thumb:hover {
        background: linear-gradient(135deg, #FF8C42, #FFA565);
    }
</style>