/* ====================================
   蓄電池投資ランディングページ - ライフサポート株式会社
   高級感のあるデザイン - 明朝体使用
   ==================================== */

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

:root {
    /* カラーパレット - 高級感のある配色 */
    --primary-color: #1a1a2e;
    --secondary-color: #8b7355;
    --accent-gold: #c9a961;
    --text-dark: #2c2c2c;
    --text-light: #f5f5f5;
    --background-light: #fafafa;
    --background-dark: #1a1a1a;
    --border-color: #d4c4a8;
    
    /* タイポグラフィ */
    --font-serif: 'Noto Serif JP', serif;
    --font-sans: 'Noto Sans JP', sans-serif;
    
    /* スペーシング */
    --section-padding: 120px 0;
    --container-width: 1200px;
    
    /* トランジション */
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-serif);
    color: var(--text-dark);
    line-height: 1.8;
    background-color: var(--background-light);
    overflow-x: hidden;
}

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

/* ========== ヘッダー ========== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(201, 169, 97, 0.2);
    transition: var(--transition);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo h1 {
    font-size: 1.4rem;
    font-weight: 400;
    color: var(--accent-gold);
    letter-spacing: 0.1em;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-list a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 300;
    letter-spacing: 0.05em;
    transition: var(--transition);
    position: relative;
}

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--accent-gold);
    transition: var(--transition);
}

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

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.menu-toggle span {
    width: 25px;
    height: 2px;
    background-color: var(--accent-gold);
    transition: var(--transition);
}

/* ========== ヒーローセクション ========== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a1a2e 0%, #2d2d44 100%);
    overflow: hidden;
    padding: 120px 0 80px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(26, 26, 46, 0.7), rgba(26, 26, 46, 0.85)),
        url('https://www.genspark.ai/api/files/s/XQscBGEV');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, transparent 0%, rgba(26, 26, 46, 0.4) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--text-light);
    width: 100%;
}

.hero-catchphrase {
    display: block;
    font-size: 1.1rem;
    font-weight: 400;
    letter-spacing: 0.08em;
    margin-bottom: 30px;
    padding: 0;
    color: var(--text-light);
    animation: fadeInDown 0.8s ease;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    margin: 0 auto 25px;
    padding: 0 20px;
    color: var(--accent-gold);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    line-height: 1.5;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-subtitle {
    font-size: 1.3rem;
    font-weight: 300;
    letter-spacing: 0.08em;
    margin: 0 auto 25px;
    padding: 0 20px;
    color: var(--text-light);
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-investment-amount {
    font-size: 1.15rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    margin: 0 auto 50px;
    padding: 15px 40px;
    background: linear-gradient(135deg, rgba(201, 169, 97, 0.9) 0%, rgba(139, 115, 85, 0.9) 100%);
    border-radius: 50px;
    color: #fff;
    display: inline-block;
    box-shadow: 0 4px 20px rgba(201, 169, 97, 0.4);
    animation: fadeInUp 0.8s ease 0.6s both;
}

.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 80px;
    margin: 0 auto 50px;
    padding: 0 20px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.8s both;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 600;
    color: var(--accent-gold);
    margin-bottom: 10px;
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    font-weight: 300;
    color: var(--text-light);
    letter-spacing: 0.05em;
    white-space: nowrap;
}

/* ========== ボタン ========== */
.btn-primary {
    display: inline-block;
    padding: 18px 50px;
    background: linear-gradient(135deg, var(--accent-gold) 0%, var(--secondary-color) 100%);
    color: var(--text-light);
    text-decoration: none;
    font-size: 1.05rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    border-radius: 50px;
    transition: var(--transition);
    border: 2px solid var(--accent-gold);
    box-shadow: 0 4px 15px rgba(201, 169, 97, 0.3);
}

.hero .btn-primary {
    animation: fadeInUp 0.8s ease 1s both;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(201, 169, 97, 0.5);
}

/* ========== セクション共通 ========== */
.section {
    padding: var(--section-padding);
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    color: var(--primary-color);
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-gold), transparent);
}

.section-subtitle {
    font-size: 1.1rem;
    font-weight: 300;
    color: #666;
    letter-spacing: 0.05em;
    margin-top: 30px;
}

/* ========== 蓄電池投資とは ========== */
.about-section {
    background-color: #fff;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text {
    padding-right: 20px;
}

.lead-text {
    font-size: 1.2rem;
    font-weight: 400;
    line-height: 2;
    color: var(--secondary-color);
    margin-bottom: 30px;
    border-left: 3px solid var(--accent-gold);
    padding-left: 20px;
}

.about-text p {
    margin-bottom: 25px;
    font-size: 1rem;
    line-height: 2;
}

.key-points {
    margin-top: 40px;
}

.point-item {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    font-size: 1.05rem;
}

.point-item i {
    color: var(--accent-gold);
    font-size: 1.2rem;
}

.about-image {
    position: relative;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.about-image:hover img {
    transform: scale(1.05);
}

/* ========== こんな方におすすめ ========== */
.recommended-section {
    background: #fff;
}

.recommended-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.recommended-card {
    background: var(--background-light);
    padding: 50px 35px;
    border-radius: 20px;
    text-align: center;
    border: 2px solid #e0e0e0;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.recommended-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--accent-gold) 0%, var(--secondary-color) 100%);
    transform: scaleX(0);
    transition: var(--transition);
}

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

.recommended-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-gold);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.15);
    background: #fff;
}

.case-label {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(135deg, var(--accent-gold) 0%, var(--secondary-color) 100%);
    color: #fff;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    border-radius: 50px;
    margin-bottom: 25px;
}

.recommended-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(201, 169, 97, 0.1) 0%, rgba(139, 115, 85, 0.1) 100%);
    border-radius: 50%;
    font-size: 2.5rem;
    color: var(--accent-gold);
    transition: var(--transition);
}

.recommended-card:hover .recommended-icon {
    transform: scale(1.1) rotate(5deg);
    background: linear-gradient(135deg, var(--accent-gold) 0%, var(--secondary-color) 100%);
    color: #fff;
}

.recommended-card h3 {
    font-size: 1.4rem;
    font-weight: 400;
    line-height: 1.6;
    margin-bottom: 20px;
    letter-spacing: 0.05em;
    color: var(--primary-color);
}

.recommended-card p {
    font-size: 0.95rem;
    line-height: 1.9;
    color: #666;
    text-align: left;
}

/* ========== 市場の成長性 ========== */
.market-section {
    background: linear-gradient(135deg, #1a1a2e 0%, #2d2d44 100%);
    color: var(--text-light);
}

.market-section .section-title {
    color: var(--accent-gold);
}

.market-section .section-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

.market-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.market-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    border: 1px solid rgba(201, 169, 97, 0.2);
    transition: var(--transition);
}

.market-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--accent-gold);
}

.market-icon {
    font-size: 3rem;
    color: var(--accent-gold);
    margin-bottom: 25px;
}

.market-card h3 {
    font-size: 1.3rem;
    font-weight: 400;
    margin-bottom: 20px;
    letter-spacing: 0.05em;
}

.market-card p {
    font-size: 0.95rem;
    font-weight: 300;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.8);
}

/* ========== 収益の仕組み ========== */
/* ========== 投資メリット ========== */
.benefits-section {
    background-color: var(--background-light);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.benefit-card {
    background: #fff;
    padding: 50px 35px;
    border-radius: 15px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    border-top: 3px solid var(--accent-gold);
}

.benefit-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.15);
}

.benefit-number {
    font-size: 3rem;
    font-weight: 300;
    color: var(--accent-gold);
    opacity: 0.3;
    margin-bottom: 20px;
}

.benefit-card h3 {
    font-size: 1.4rem;
    font-weight: 400;
    margin-bottom: 20px;
    letter-spacing: 0.05em;
    color: var(--primary-color);
}

.benefit-card p {
    font-size: 0.95rem;
    line-height: 1.9;
    color: #666;
}

/* ========== 収益シミュレーション ========== */
.simulation-section {
    background: #fff;
}

.simulation-content {
    max-width: 900px;
    margin: 0 auto;
}

.simulation-calculator {
    background: linear-gradient(135deg, #1a1a2e 0%, #2d2d44 100%);
    padding: 60px 50px;
    border-radius: 20px;
    box-shadow: 0 10px 50px rgba(0, 0, 0, 0.2);
}

.calculator-input {
    margin-bottom: 50px;
}

.calculator-input label {
    display: block;
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 20px;
    letter-spacing: 0.05em;
}

#investmentAmount {
    width: 100%;
    height: 8px;
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    -webkit-appearance: none;
}

#investmentAmount::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 25px;
    height: 25px;
    border-radius: 50%;
    background: var(--accent-gold);
    cursor: pointer;
    box-shadow: 0 3px 10px rgba(201, 169, 97, 0.5);
}

#investmentAmount::-moz-range-thumb {
    width: 25px;
    height: 25px;
    border-radius: 50%;
    background: var(--accent-gold);
    cursor: pointer;
    border: none;
}

.amount-display {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 400;
    color: var(--accent-gold);
    margin-top: 30px;
}

.calculator-results {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.result-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    border: 1px solid rgba(201, 169, 97, 0.2);
}

.result-item.highlight {
    border: 2px solid var(--accent-gold);
    background: rgba(201, 169, 97, 0.1);
}

.result-label {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 15px;
    letter-spacing: 0.05em;
}

.result-value {
    font-size: 2rem;
    font-weight: 600;
    color: var(--accent-gold);
}

.simulation-note {
    margin-top: 40px;
    padding: 25px;
    background: rgba(201, 169, 97, 0.1);
    border-radius: 10px;
    border-left: 3px solid var(--accent-gold);
}

.note-text {
    font-size: 0.9rem;
    color: #666;
    line-height: 1.8;
}

.note-text i {
    color: var(--accent-gold);
    margin-right: 10px;
}

/* ========== 投資スキーム ========== */
.scheme-section {
    background: var(--background-light);
}

.scheme-diagram {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 60px;
    padding: 50px;
    background: #fff;
    border-radius: 20px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.08);
}

.scheme-step {
    text-align: center;
    flex: 1;
}

.scheme-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent-gold) 0%, var(--secondary-color) 100%);
    border-radius: 50%;
    color: #fff;
    font-size: 2rem;
}

.scheme-step h4 {
    font-size: 1.2rem;
    font-weight: 400;
    margin-bottom: 10px;
    letter-spacing: 0.05em;
}

.scheme-step p {
    font-size: 0.9rem;
    color: #666;
}

.scheme-arrow {
    font-size: 2rem;
    color: var(--accent-gold);
    margin: 0 20px;
}

.scheme-details {
    background: #fff;
    padding: 50px;
    border-radius: 20px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.08);
}

.scheme-details h3 {
    font-size: 1.8rem;
    font-weight: 400;
    margin-bottom: 30px;
    letter-spacing: 0.05em;
    color: var(--primary-color);
}

.scheme-details ul {
    list-style: none;
}

.scheme-details li {
    padding: 15px 0 15px 30px;
    position: relative;
    font-size: 1rem;
    line-height: 1.8;
}

.scheme-details li::before {
    content: '◆';
    position: absolute;
    left: 0;
    color: var(--accent-gold);
}

/* ========== 投資の流れ ========== */
.process-section {
    background: #fff;
}

.process-timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.process-timeline::before {
    content: '';
    position: absolute;
    left: 40px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--accent-gold), var(--secondary-color));
}

.timeline-item {
    display: flex;
    gap: 40px;
    margin-bottom: 60px;
    position: relative;
}

.timeline-marker {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-gold) 0%, var(--secondary-color) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    box-shadow: 0 5px 20px rgba(201, 169, 97, 0.3);
    z-index: 2;
}

.timeline-content {
    flex: 1;
    background: var(--background-light);
    padding: 30px 40px;
    border-radius: 15px;
    border-left: 3px solid var(--accent-gold);
}

.timeline-content h3 {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 15px;
    letter-spacing: 0.05em;
    color: var(--primary-color);
}

.timeline-content p {
    font-size: 1rem;
    line-height: 1.9;
    color: #666;
}

/* ========== よくある質問 ========== */
.faq-section {
    background: var(--background-light);
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: #fff;
    margin-bottom: 20px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.05);
}

.faq-question {
    padding: 30px 40px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--background-light);
}

.faq-question h3 {
    font-size: 1.2rem;
    font-weight: 400;
    letter-spacing: 0.03em;
}

.faq-question i {
    color: var(--accent-gold);
    font-size: 1.2rem;
    transition: var(--transition);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 40px 30px;
    font-size: 1rem;
    line-height: 2;
    color: #666;
}

/* ========== お問い合わせ ========== */
.contact-section {
    background: #fff;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
}

.contact-method {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
    padding: 30px;
    background: var(--background-light);
    border-radius: 15px;
    border-left: 3px solid var(--accent-gold);
}

.method-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent-gold) 0%, var(--secondary-color) 100%);
    border-radius: 50%;
    color: #fff;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.method-details h4 {
    font-size: 1.1rem;
    font-weight: 400;
    margin-bottom: 10px;
    letter-spacing: 0.03em;
}

.phone-number {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent-gold);
    margin: 10px 0;
}

.business-hours,
.response-time {
    font-size: 0.9rem;
    color: #666;
}

/* ========== お問い合わせフォーム ========== */
.contact-form-wrapper {
    background: var(--background-light);
    padding: 50px;
    border-radius: 20px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.08);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: 1rem;
    font-weight: 400;
    margin-bottom: 10px;
    color: var(--text-dark);
    letter-spacing: 0.03em;
}

.required {
    color: #d32f2f;
    font-size: 0.85rem;
    margin-left: 5px;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 15px 20px;
    font-size: 1rem;
    font-family: var(--font-serif);
    border: 2px solid #ddd;
    border-radius: 10px;
    transition: var(--transition);
    background: #fff;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-gold);
    box-shadow: 0 0 0 3px rgba(201, 169, 97, 0.1);
}

.btn-submit {
    padding: 18px 50px;
    background: linear-gradient(135deg, var(--accent-gold) 0%, var(--secondary-color) 100%);
    color: var(--text-light);
    font-size: 1.1rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(201, 169, 97, 0.3);
    font-family: var(--font-serif);
}

.btn-submit:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(201, 169, 97, 0.5);
}

/* ========== フッター ========== */
.footer {
    background: linear-gradient(135deg, #1a1a2e 0%, #2d2d44 100%);
    color: var(--text-light);
    padding: 60px 0 30px;
}

.footer-simple {
    text-align: center;
}

.footer-company-info {
    margin-bottom: 30px;
}

.footer-company-info .company-name {
    font-size: 1.2rem;
    font-weight: 400;
    margin-bottom: 15px;
    color: var(--accent-gold);
    letter-spacing: 0.08em;
}

.footer-company-info .company-address {
    font-size: 0.9rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.7);
}

.footer-simple .copyright {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    padding-top: 30px;
    border-top: 1px solid rgba(201, 169, 97, 0.2);
    margin-top: 30px;
}

/* ========== フローティングCTAボタン ========== */
.floating-cta {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 35px;
    background: linear-gradient(135deg, var(--accent-gold) 0%, var(--secondary-color) 100%);
    color: #fff;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    border-radius: 50px;
    box-shadow: 0 6px 30px rgba(201, 169, 97, 0.4);
    z-index: 1000;
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

.floating-cta.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.floating-cta i {
    font-size: 1.2rem;
}

.floating-cta:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(201, 169, 97, 0.6);
}

.floating-cta:active {
    transform: translateY(-2px);
}

/* ========== ページトップボタン ========== */
.scroll-top {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: rgba(26, 26, 46, 0.8);
    color: var(--accent-gold);
    border: 2px solid var(--accent-gold);
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    z-index: 999;
    backdrop-filter: blur(10px);
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    transform: translateY(-5px);
    background: var(--accent-gold);
    color: #fff;
    box-shadow: 0 8px 25px rgba(201, 169, 97, 0.5);
}

/* ========== レスポンシブデザイン ========== */
@media (max-width: 1024px) {
    .about-content,
    .scheme-diagram {
        grid-template-columns: 1fr;
    }
    
    .recommended-grid {
        grid-template-columns: 1fr;
    }
    

    .market-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-stats {
        gap: 40px;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 80px 0;
    }
    
    .nav-list {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: rgba(26, 26, 46, 0.98);
        flex-direction: column;
        gap: 0;
        padding: 40px;
        transition: var(--transition);
    }
    
    .nav-list.active {
        left: 0;
    }
    
    .nav-list li {
        width: 100%;
        text-align: center;
        padding: 20px 0;
        border-bottom: 1px solid rgba(201, 169, 97, 0.2);
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .hero {
        min-height: 100vh;
        padding: 100px 0 60px;
    }
    
    .hero-catchphrase {
        font-size: 0.95rem;
        padding: 0;
        margin-bottom: 25px;
    }
    
    .hero-title {
        font-size: 2.2rem;
        line-height: 1.5;
        margin-bottom: 20px;
        padding: 0 15px;
    }
    
    .hero-subtitle {
        font-size: 1.05rem;
        margin-bottom: 20px;
        padding: 0 15px;
    }
    
    .hero-investment-amount {
        font-size: 1rem;
        padding: 12px 30px;
        margin-bottom: 40px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 35px;
        margin-bottom: 40px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .revenue-diagram-box {
        padding: 20px;
    }
    
    .market-grid {
        grid-template-columns: 1fr;
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .calculator-results {
        grid-template-columns: 1fr;
    }
    
    .scheme-diagram {
        flex-direction: column;
        gap: 30px;
    }
    
    .scheme-arrow {
        transform: rotate(90deg);
    }
    
    .process-timeline::before {
        left: 20px;
    }
    
    .timeline-marker {
        width: 60px;
        height: 60px;
    }
    
    .timeline-item {
        gap: 20px;
    }
    

    
    .simulation-calculator,
    .scheme-details,
    .contact-form-wrapper {
        padding: 30px 25px;
    }
    
    .floating-cta {
        bottom: 20px;
        right: 20px;
        padding: 15px 25px;
        font-size: 0.9rem;
    }
    
    .floating-cta span {
        display: none;
    }
    
    .floating-cta i {
        font-size: 1.5rem;
    }
    
    .scroll-top {
        bottom: 85px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 100px 0 50px;
    }
    
    .hero-catchphrase {
        font-size: 0.85rem;
        padding: 0;
        margin-bottom: 20px;
    }
    
    .hero-title {
        font-size: 1.8rem;
        line-height: 1.5;
        margin-bottom: 18px;
        padding: 0 10px;
    }
    
    .hero-subtitle {
        font-size: 0.95rem;
        margin-bottom: 18px;
    }
    
    .hero-investment-amount {
        font-size: 0.9rem;
        padding: 10px 25px;
        margin-bottom: 35px;
    }
    
    .hero-stats {
        gap: 30px;
        margin-bottom: 35px;
    }
    
    .stat-number {
        font-size: 2.2rem;
    }
    
    .stat-label {
        font-size: 0.85rem;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .amount-display {
        font-size: 2rem;
    }
    
    .result-value {
        font-size: 1.5rem;
    }
}

/* ========== アニメーション ========== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-header,
.about-content,
.market-card,
.benefit-card,
.timeline-item {
    animation: fadeInUp 0.8s ease-out;
}