/* リセット・基本設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #0f172a;
    --secondary-color: #1e293b;
    --accent-color: #3b82f6;
    --accent-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --text-dark: #0f172a;
    --text-medium: #475569;
    --text-light: #64748b;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
    line-height: 1.7;
    color: var(--text-dark);
    background-color: var(--bg-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* スクロールアニメーション */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in:nth-child(2) {
    transition-delay: 0.1s;
}

.fade-in:nth-child(3) {
    transition-delay: 0.2s;
}

.fade-in:nth-child(4) {
    transition-delay: 0.3s;
}

.fade-in:nth-child(5) {
    transition-delay: 0.4s;
}

/* ヘッダー */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.logo-image {
    height: 45px;
    width: auto;
    object-fit: contain;
}

.logo h1 {
    font-size: 1.65rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin: 0;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-list a {
    text-decoration: none;
    color: var(--text-medium);
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: -0.01em;
    position: relative;
    transition: color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-list a:hover {
    color: var(--text-dark);
}

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

.btn-contact {
    background: var(--accent-gradient);
    color: white !important;
    padding: 0.65rem 1.75rem;
    border-radius: 50px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
    font-size: 0.95rem;
}

.btn-contact::after {
    display: none;
}

.btn-contact:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

/* ハンバーガーメニュー */
.hamburger {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--text-dark);
    margin: 3px 0;
    transition: 0.3s;
}

/* メインビジュアル */
.hero {
    position: relative;
    height: 100vh;
    min-height: 750px;
    display: flex;
    align-items: center;
    background:
        radial-gradient(ellipse at 10% 20%, #1a1f3a 0%, transparent 50%),
        radial-gradient(ellipse at 90% 80%, #2d1b4e 0%, transparent 50%),
        linear-gradient(135deg, #0a0e1a 0%, #1a1f35 50%, #0f1419 100%);
    overflow: hidden;
    margin-top: 75px;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background:
        radial-gradient(circle at 20% 30%, rgba(102, 126, 234, 0.35) 0%, transparent 25%),
        radial-gradient(circle at 80% 70%, rgba(118, 75, 162, 0.3) 0%, transparent 25%),
        radial-gradient(circle at 50% 50%, rgba(59, 130, 246, 0.15) 0%, transparent 30%);
    z-index: 1;
    animation: gradientMove 20s ease-in-out infinite;
}

@keyframes gradientMove {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    33% {
        transform: translate(5%, -5%) rotate(120deg);
    }
    66% {
        transform: translate(-5%, 5%) rotate(240deg);
    }
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        repeating-linear-gradient(0deg, rgba(255,255,255,0.03) 0px, transparent 1px, transparent 60px, rgba(255,255,255,0.03) 61px),
        repeating-linear-gradient(90deg, rgba(255,255,255,0.03) 0px, transparent 1px, transparent 60px, rgba(255,255,255,0.03) 61px);
    z-index: 1;
    animation: gridPulse 8s ease-in-out infinite;
}

@keyframes gridPulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

.particle {
    position: absolute;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.8) 0%, rgba(118, 75, 162, 0.4) 50%, transparent 100%);
    border-radius: 50%;
    animation: float 20s infinite ease-in-out;
}

.particle:nth-child(1) {
    width: 80px;
    height: 80px;
    top: 20%;
    left: 10%;
    animation-duration: 18s;
    animation-delay: 0s;
}

.particle:nth-child(2) {
    width: 60px;
    height: 60px;
    top: 60%;
    left: 80%;
    animation-duration: 22s;
    animation-delay: -5s;
}

.particle:nth-child(3) {
    width: 100px;
    height: 100px;
    top: 40%;
    left: 70%;
    animation-duration: 25s;
    animation-delay: -10s;
}

.particle:nth-child(4) {
    width: 70px;
    height: 70px;
    top: 80%;
    left: 20%;
    animation-duration: 20s;
    animation-delay: -3s;
}

.particle:nth-child(5) {
    width: 50px;
    height: 50px;
    top: 10%;
    left: 50%;
    animation-duration: 19s;
    animation-delay: -7s;
}

.particle:nth-child(6) {
    width: 90px;
    height: 90px;
    top: 70%;
    left: 60%;
    animation-duration: 23s;
    animation-delay: -12s;
}

.particle:nth-child(7) {
    width: 65px;
    height: 65px;
    top: 30%;
    left: 30%;
    animation-duration: 21s;
    animation-delay: -8s;
}

.particle:nth-child(8) {
    width: 75px;
    height: 75px;
    top: 50%;
    left: 85%;
    animation-duration: 24s;
    animation-delay: -15s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.3;
    }
    25% {
        transform: translate(50px, -80px) scale(1.1);
        opacity: 0.6;
    }
    50% {
        transform: translate(-30px, -150px) scale(0.9);
        opacity: 0.4;
    }
    75% {
        transform: translate(-70px, -100px) scale(1.05);
        opacity: 0.5;
    }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        linear-gradient(180deg, rgba(0, 0, 0, 0.25) 0%, rgba(0, 0, 0, 0.05) 50%, rgba(0, 0, 0, 0.25) 100%);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    color: white;
    text-align: center;
    animation: fadeInUp 1.2s ease-out;
}

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

.hero-title {
    font-size: 4.5rem;
    font-weight: 900;
    margin-bottom: 2rem;
    line-height: 1.1;
    letter-spacing: -0.04em;
    color: #ffffff;
    text-shadow:
        0 2px 4px rgba(0, 0, 0, 0.5),
        0 4px 8px rgba(0, 0, 0, 0.3),
        0 8px 16px rgba(102, 126, 234, 0.3);
    position: relative;
    animation: textGlow 3s ease-in-out infinite;
}

@keyframes textGlow {
    0%, 100% {
        text-shadow:
            0 2px 4px rgba(0, 0, 0, 0.5),
            0 4px 8px rgba(0, 0, 0, 0.3),
            0 8px 16px rgba(102, 126, 234, 0.3),
            0 0 30px rgba(102, 126, 234, 0.2);
    }
    50% {
        text-shadow:
            0 2px 4px rgba(0, 0, 0, 0.5),
            0 4px 8px rgba(0, 0, 0, 0.3),
            0 8px 16px rgba(102, 126, 234, 0.5),
            0 0 50px rgba(102, 126, 234, 0.4);
    }
}

.hero-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: var(--accent-gradient);
    border-radius: 10px;
    box-shadow: 0 0 30px rgba(102, 126, 234, 0.7);
    animation: lineGlow 2s ease-in-out infinite;
}

@keyframes lineGlow {
    0%, 100% {
        box-shadow: 0 0 30px rgba(102, 126, 234, 0.7);
        width: 100px;
    }
    50% {
        box-shadow: 0 0 50px rgba(102, 126, 234, 1);
        width: 120px;
    }
}

.hero-subtitle {
    font-size: 1.45rem;
    margin-bottom: 3.5rem;
    margin-top: 2.5rem;
    font-weight: 400;
    line-height: 1.7;
    letter-spacing: -0.01em;
    max-width: 750px;
    margin-left: auto;
    margin-right: auto;
    color: rgba(255, 255, 255, 0.95);
    text-shadow:
        0 1px 3px rgba(0, 0, 0, 0.3),
        0 2px 10px rgba(0, 0, 0, 0.2);
}

.btn-primary {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1.35rem 3.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: -0.01em;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow:
        0 10px 40px rgba(102, 126, 234, 0.4),
        0 0 0 0 rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.6s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow:
        0 20px 60px rgba(102, 126, 234, 0.5),
        0 0 0 8px rgba(102, 126, 234, 0.1);
}

/* セクション共通 */
section {
    padding: 7rem 0;
}

.section-title {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 4.5rem;
    color: var(--text-dark);
    position: relative;
    padding-bottom: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.03em;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 5px;
    background: var(--accent-gradient);
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

/* 会社概要 */
.about {
    background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
    position: relative;
    overflow: hidden;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0,0,0,0.05), transparent);
}

.about::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.about-content {
    max-width: 1000px;
    margin: 0 auto;
    background: linear-gradient(135deg, #ffffff 0%, #fafbfc 100%);
    padding: 4.5rem 4rem;
    border-radius: 32px;
    box-shadow:
        0 20px 60px -15px rgba(0, 0, 0, 0.08),
        0 10px 30px -10px rgba(0, 0, 0, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(102, 126, 234, 0.1);
    position: relative;
    overflow: hidden;
}

.about-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--accent-gradient);
}

.about-content::after {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -100px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(118, 75, 162, 0.06) 0%, transparent 70%);
    border-radius: 50%;
}

.about-text {
    position: relative;
    z-index: 1;
}

.about-text h3 {
    font-size: 2.25rem;
    margin-bottom: 2.5rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
    letter-spacing: -0.03em;
    position: relative;
    padding-bottom: 1.5rem;
}

.about-text h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--accent-gradient);
    border-radius: 2px;
}

.about-text p {
    font-size: 1.2rem;
    line-height: 2.1;
    margin-bottom: 2rem;
    color: var(--text-medium);
    letter-spacing: -0.01em;
}

.about-text p:last-child {
    margin-bottom: 0;
}

/* 会社情報テーブル */
.company-info-table {
    margin-top: 4rem;
    position: relative;
    z-index: 1;
}

.company-info-table table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(102, 126, 234, 0.12);
}

.company-info-table th,
.company-info-table td {
    padding: 1.5rem 2rem;
    text-align: left;
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
}

.company-info-table tr:last-child th,
.company-info-table tr:last-child td {
    border-bottom: none;
}

.company-info-table th {
    width: 180px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.08) 0%, rgba(118, 75, 162, 0.08) 100%);
    color: var(--text-dark);
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: -0.01em;
    white-space: nowrap;
}

.company-info-table td {
    color: var(--text-medium);
    font-size: 1.05rem;
    line-height: 1.8;
    letter-spacing: -0.01em;
}

/* 事業内容 */
.services {
    background-color: var(--bg-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
    max-width: 1400px;
    margin: 0 auto;
}

.service-card {
    background: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 2.75rem 2.25rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(102, 126, 234, 0.2);
    background: white;
}

.service-icon {
    width: 72px;
    height: 72px;
    background: var(--accent-gradient);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.25);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 12px 30px rgba(102, 126, 234, 0.35);
}

.service-icon svg {
    width: 36px;
    height: 36px;
    color: white;
}

.service-card h3 {
    font-size: 1.65rem;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
    font-weight: 800;
    letter-spacing: -0.02em;
}

.service-features {
    list-style: none;
}

.service-features li {
    padding: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
    color: var(--text-medium);
    font-size: 1.02rem;
    line-height: 1.6;
    letter-spacing: -0.01em;
}

.service-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    background: var(--accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.15;
}

.service-features li::after {
    content: '✓';
    position: absolute;
    left: 5px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: bold;
    font-size: 0.85rem;
}

/* お問い合わせ */
.contact {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 30% 50%, rgba(102, 126, 234, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 70% 70%, rgba(118, 75, 162, 0.12) 0%, transparent 50%);
}

.contact .section-title {
    color: white;
    position: relative;
}

.contact .section-title::after {
    background: linear-gradient(90deg, transparent, white, transparent);
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.3);
}

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

.contact-text {
    font-size: 1.2rem;
    margin-bottom: 3rem;
    opacity: 0.9;
    line-height: 1.8;
    letter-spacing: -0.01em;
}

/* お問い合わせフォーム */
.contact-form {
    background: rgba(255, 255, 255, 0.08);
    padding: 3.5rem 3rem;
    border-radius: 24px;
    margin-bottom: 2rem;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    text-align: left;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.6rem;
    font-size: 1rem;
    font-weight: 600;
    color: white;
    letter-spacing: -0.01em;
}

.form-group .required {
    color: #f87171;
    font-weight: 700;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    color: white;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: rgba(102, 126, 234, 0.6);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23ffffff' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.form-group select option {
    background: #1e293b;
    color: white;
}

.form-group textarea {
    resize: vertical;
    min-height: 140px;
}

.btn-submit {
    width: 100%;
    padding: 1.35rem 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    letter-spacing: -0.01em;
    box-shadow: 0 10px 40px rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-submit::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.6s;
}

.btn-submit:hover::before {
    left: 100%;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 50px rgba(102, 126, 234, 0.4);
}

.btn-submit:active {
    transform: translateY(0);
}

.contact-note {
    font-size: 0.95rem;
    opacity: 0.7;
    letter-spacing: -0.01em;
    margin-bottom: 0.75rem;
}

.contact-email-text {
    font-size: 0.95rem;
    opacity: 0.7;
    letter-spacing: -0.01em;
}

.contact-email-text a {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.contact-email-text a:hover {
    color: #764ba2;
    text-decoration: underline;
}

/* フッター */
.footer {
    background: linear-gradient(180deg, #0a0f1a 0%, #0f172a 100%);
    color: white;
    padding: 4rem 0 1.5rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 3rem;
    flex-wrap: wrap;
    gap: 2.5rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.footer-logo-image {
    height: 40px;
    width: auto;
    object-fit: contain;
    filter: brightness(0) invert(1);
    opacity: 0.9;
}

.footer-logo h3 {
    font-size: 1.65rem;
    margin: 0;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-nav ul {
    list-style: none;
    display: flex;
    gap: 2.5rem;
}

.footer-nav a {
    color: white;
    text-decoration: none;
    opacity: 0.7;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: -0.01em;
}

.footer-nav a:hover {
    opacity: 1;
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 2rem;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.85rem;
    opacity: 0.5;
    letter-spacing: 0.01em;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .logo-image {
        height: 38px;
    }

    .logo {
        gap: 0.65rem;
    }

    .logo h1 {
        font-size: 1.45rem;
    }

    .nav {
        position: fixed;
        top: 75px;
        left: -100%;
        width: 100%;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        box-shadow: var(--shadow-lg);
        transition: left 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        padding: 2.5rem;
        height: calc(100vh - 75px);
        overflow-y: auto;
    }

    .nav.active {
        left: 0;
    }

    .nav-list {
        flex-direction: column;
        gap: 2rem;
        align-items: flex-start;
    }

    .nav-list a {
        font-size: 1.15rem;
    }

    .hamburger {
        display: flex;
    }

    .hero {
        margin-top: 75px;
        min-height: 600px;
    }

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

    .hero-subtitle {
        font-size: 1.15rem;
        padding: 0 1rem;
    }

    .btn-primary {
        padding: 1rem 2.25rem;
        font-size: 1rem;
    }

    section {
        padding: 5rem 0;
    }

    .section-title {
        font-size: 2.25rem;
        margin-bottom: 3rem;
    }

    .about-content {
        padding: 3.5rem 2.5rem;
    }

    .about-text h3 {
        font-size: 2rem;
        margin-bottom: 2rem;
    }

    .about-text p {
        font-size: 1.1rem;
    }

    .company-info-table th,
    .company-info-table td {
        padding: 1.2rem 1.5rem;
        font-size: 1rem;
    }

    .company-info-table th {
        width: 140px;
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .service-card {
        padding: 2.25rem 1.75rem;
    }

    .contact-form {
        padding: 2.5rem 2rem;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .contact-email-text {
        font-size: 0.9rem;
    }

    .footer-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .footer-nav ul {
        flex-direction: column;
        gap: 1.25rem;
    }
}

@media (max-width: 480px) {
    .logo-image {
        height: 32px;
    }

    .logo h1 {
        font-size: 1.25rem;
    }

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

    .hero-subtitle {
        font-size: 1.05rem;
    }

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

    .about-content {
        padding: 3rem 2rem;
    }

    .about-text h3 {
        font-size: 1.85rem;
    }

    .about-text p {
        font-size: 1.05rem;
        line-height: 1.9;
    }

    .company-info-table {
        margin-top: 3rem;
    }

    .company-info-table th,
    .company-info-table td {
        display: block;
        width: 100%;
        padding: 1rem 1.5rem;
    }

    .company-info-table th {
        background: linear-gradient(135deg, rgba(102, 126, 234, 0.12) 0%, rgba(118, 75, 162, 0.12) 100%);
        border-bottom: none;
        padding-bottom: 0.6rem;
        font-size: 0.9rem;
    }

    .company-info-table td {
        padding-top: 0.6rem;
        padding-bottom: 1.5rem;
        font-size: 0.95rem;
    }

    .service-card {
        padding: 2rem 1.5rem;
    }

    .service-icon {
        width: 64px;
        height: 64px;
    }

    .service-card h3 {
        font-size: 1.45rem;
    }

    .service-features li {
        font-size: 0.98rem;
    }

    .contact-form {
        padding: 2rem 1.5rem;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 0.9rem 1rem;
        font-size: 0.95rem;
    }

    .btn-submit {
        padding: 1.15rem 1.5rem;
        font-size: 1rem;
    }

    .contact-email-text {
        font-size: 0.85rem;
    }
}