/* ============================================
   リセット & ベーススタイル
============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-navy: #1a2332;
    --secondary-navy: #2c3e50;
    --accent-gold: #d4af37;
    --accent-light-gold: #f4e4bc;
    --text-dark: #333333;
    --text-light: #666666;
    --bg-light: #f8f9fa;
    --white: #ffffff;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(0, 0, 0, 0.15);
}

body {
    font-family: 'Noto Serif JP', serif;
    color: var(--text-dark);
    line-height: 1.8;
    background-color: var(--white);
    width: 100%;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================
   ヘッダー
============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(26, 35, 50, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 2px 10px var(--shadow);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-gold);
    letter-spacing: 2px;
}

.nav {
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav a {
    color: var(--white);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.3s ease;
    white-space: nowrap;
    padding: 8px 12px;
    border-radius: 5px;
}

.nav a:not(.nav-cta):hover {
    color: var(--accent-gold);
    background: rgba(212, 175, 55, 0.1);
}

/* ナビゲーションCTA */
.nav-cta {
    background: linear-gradient(135deg, var(--accent-gold) 0%, #b8941f 100%) !important;
    color: var(--white) !important;
    padding: 10px 20px !important;
    border-radius: 25px !important;
    font-weight: 700;
    font-size: 0.9rem;
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.4);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.nav-cta:hover {
    background: linear-gradient(135deg, #e5c05d 0%, #c9a532 100%) !important;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(212, 175, 55, 0.6);
    color: var(--white) !important;
    border-color: rgba(255, 255, 255, 0.2);
}

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

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--white);
    transition: all 0.3s ease;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ============================================
   ヒーローセクション
============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary-navy) 0%, var(--secondary-navy) 100%);
    padding-top: 80px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200%;
    height: 200%;
    background-image: url('https://www.genspark.ai/api/files/s/MD0NpPXa');
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0.3;
    pointer-events: none;
    z-index: 0;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(212, 175, 55, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(212, 175, 55, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(26, 35, 50, 0.3);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    color: var(--white);
    animation: fadeInUp 1s ease-out;
}

.hero-text-block {
    margin-bottom: 40px;
}

.hero-main-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--accent-gold);
    margin-bottom: 30px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    letter-spacing: 2px;
}

.hero-subtitle {
    font-size: 1.5rem;
    line-height: 2;
    color: var(--white);
    margin-bottom: 30px;
    font-weight: 400;
}

/* 追加コピーセクション */
.hero-additional-copy {
    background: rgba(212, 175, 55, 0.15);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(212, 175, 55, 0.3);
    border-radius: 15px;
    padding: 30px 40px;
    margin: 40px auto;
    max-width: 800px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.copy-line {
    font-size: 1.3rem;
    line-height: 2;
    color: var(--white);
    margin-bottom: 15px;
    font-weight: 400;
}

.copy-line:last-child {
    margin-bottom: 0;
}

.copy-line.tax-benefit {
    font-size: 1.4rem;
    margin-top: 20px;
}

.highlight-gold {
    color: var(--accent-gold);
    font-weight: 700;
    font-size: 1.1em;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin: 50px 0;
}

.hero-features {
    display: flex;
    gap: 40px;
    justify-content: center;
    margin-top: 60px;
    flex-wrap: wrap;
}

.hero-feature-item {
    text-align: center;
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 10px;
    border: 1px solid rgba(212, 175, 55, 0.3);
}

.feature-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-gold);
    margin-bottom: 10px;
}

.feature-label {
    font-size: 0.9rem;
    color: var(--white);
}



.btn {
    display: inline-block;
    padding: 18px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    min-height: 44px;
    min-width: 44px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-gold) 0%, #b8941f 100%);
    color: var(--primary-navy);
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(212, 175, 55, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--accent-gold);
}

.btn-secondary:hover {
    background: var(--accent-gold);
    color: var(--primary-navy);
    transform: translateY(-3px);
}



/* ============================================
   セクション共通スタイル
============================================ */
.section {
    padding: 100px 0;
    width: 100%;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 20px;
    color: var(--primary-navy);
    position: relative;
    padding-bottom: 20px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent-gold), transparent);
}

.section-description {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 60px;
}

/* ============================================
   Beaconとはセクション
============================================ */
.section-what-is {
    background: var(--white);
    padding: 80px 0;
}

/* YouTube動画コンテナ */
.video-container {
    position: relative;
    width: 100%;
    max-width: 900px;
    margin: 0 auto 50px;
    background: #000;
    border-radius: 15px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    overflow: hidden;
}

/* 動画のアスペクト比を自動調整 */
.video-container::before {
    content: '';
    display: block;
    padding-top: 56.25%; /* 16:9 デフォルト */
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* 縦長動画（9:16）の場合の調整 */
@media (max-width: 767px) {
    .video-container {
        max-width: 100%;
    }
    
    .video-container::before {
        padding-top: 56.25%; /* スマホでも16:9を維持 */
    }
}

.what-is-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.what-is-text {
    font-size: 1.2rem;
    line-height: 2;
    color: var(--text-dark);
    background: var(--bg-light);
    padding: 40px 50px;
    border-radius: 15px;
    border-left: 5px solid var(--accent-gold);
    text-align: left;
}

/* ============================================
   5つのオススメ理由セクション
============================================ */
.section-reasons {
    background: var(--bg-light);
}

.reasons-list {
    display: flex;
    flex-direction: column;
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.reason-item {
    background: var(--white);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 4px 20px var(--shadow);
    display: flex;
    gap: 30px;
    align-items: flex-start;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.reason-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px var(--shadow-hover);
}

.reason-number {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--accent-gold) 0%, #b8941f 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    color: var(--white);
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
}

.reason-content {
    flex: 1;
}

.reason-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-navy);
    margin-bottom: 20px;
    line-height: 1.4;
}

.reason-text {
    font-size: 1.1rem;
    line-height: 1.9;
    color: var(--text-dark);
    margin-bottom: 15px;
}

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

.reason-highlight {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.1) 0%, rgba(212, 175, 55, 0.05) 100%);
    border: 2px solid var(--accent-light-gold);
    border-radius: 12px;
    padding: 30px;
    margin-top: 25px;
}

.highlight-subtitle {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--accent-gold);
    margin-bottom: 20px;
    text-align: center;
}

.highlight-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.highlight-list li {
    padding-left: 30px;
    position: relative;
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-dark);
}

.highlight-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-gold);
    font-weight: 700;
    font-size: 1.3rem;
}

/* ============================================
   商品概要セクション
============================================ */
.section-about {
    background-color: var(--bg-light);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.about-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: 0 4px 15px var(--shadow);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.about-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--shadow-hover);
}

.card-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--accent-gold);
    margin-bottom: 15px;
}

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

.tax-benefit-box {
    background: linear-gradient(135deg, var(--primary-navy) 0%, var(--secondary-navy) 100%);
    color: var(--white);
    padding: 50px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.benefit-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-gold);
    margin-bottom: 20px;
}

.benefit-content {
    font-size: 1.2rem;
    line-height: 2;
}

.benefit-content .highlight {
    color: var(--accent-gold);
    font-weight: 700;
}

/* ============================================
   特徴セクション
============================================ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.feature-card {
    background: var(--white);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 4px 15px var(--shadow);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--shadow-hover);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-navy);
    margin-bottom: 15px;
}

.feature-description {
    color: var(--text-light);
    line-height: 1.8;
}

.specs-box {
    background: var(--bg-light);
    padding: 50px;
    border-radius: 20px;
    border: 2px solid var(--accent-light-gold);
}

.specs-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-navy);
    text-align: center;
    margin-bottom: 40px;
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.spec-item {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 20px;
    background: var(--white);
    border-radius: 10px;
    box-shadow: 0 2px 10px var(--shadow);
}

.spec-label {
    font-size: 0.9rem;
    color: var(--text-light);
    font-weight: 500;
}

.spec-value {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-navy);
}

/* ============================================
   市場セクション
============================================ */
.section-market {
    background: linear-gradient(135deg, var(--primary-navy) 0%, var(--secondary-navy) 100%);
    color: var(--white);
}

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

.section-market .section-title::after {
    background: linear-gradient(90deg, transparent, var(--accent-gold), transparent);
}

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

.market-timeline {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 30px;
    flex-wrap: wrap;
}

.timeline-item {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    min-width: 250px;
    border: 2px solid rgba(212, 175, 55, 0.3);
    transition: transform 0.3s ease;
}

.timeline-item:hover {
    transform: scale(1.05);
}

.timeline-item.highlight-item {
    background: rgba(212, 175, 55, 0.2);
    border: 2px solid var(--accent-gold);
}

.timeline-year {
    font-size: 1.1rem;
    color: var(--accent-light-gold);
    margin-bottom: 15px;
    font-weight: 600;
}

.timeline-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-gold);
    margin-bottom: 15px;
}

.timeline-note {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
}

/* ============================================
   導入実績セクション
============================================ */
.section-cases {
    background-color: var(--bg-light);
}

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

.case-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: 0 4px 15px var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    min-height: 100%;
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--shadow-hover);
}

.case-company {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-navy);
    margin-bottom: 10px;
}

.case-detail {
    font-size: 1.1rem;
    color: var(--accent-gold);
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--accent-light-gold);
}

.case-results {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.case-results p {
    font-size: 0.95rem;
    color: var(--text-light);
    margin-bottom: 10px;
    padding-left: 5px;
}

/* ============================================
   収益シミュレーションセクション
============================================ */
.section-simulation {
    background: var(--white);
}

.simulation-tabs {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 50px;
}

.tab-btn {
    padding: 15px 40px;
    border: 2px solid var(--accent-gold);
    background: transparent;
    color: var(--primary-navy);
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Noto Serif JP', serif;
    min-height: 44px;
    min-width: 44px;
}

.tab-btn:hover {
    background: var(--accent-light-gold);
}

.tab-btn.active {
    background: var(--accent-gold);
    color: var(--white);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

.simulation-examples {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.example-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: 0 4px 15px var(--shadow);
    border: 2px solid var(--accent-light-gold);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.example-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--shadow-hover);
}

.example-card.featured {
    border: 3px solid var(--accent-gold);
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.05) 0%, rgba(212, 175, 55, 0.1) 100%);
}

.example-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-navy);
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--accent-light-gold);
}

.example-details {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.example-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1rem;
    padding: 10px 0;
}

.example-item span {
    color: var(--text-light);
}

.example-item strong {
    color: var(--primary-navy);
    font-size: 1.1rem;
}

.example-item.total {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 2px solid var(--accent-gold);
    font-size: 1.1rem;
}

.example-item.profit {
    font-size: 1.1rem;
}

.limited-notice {
    background: linear-gradient(135deg, var(--primary-navy) 0%, var(--secondary-navy) 100%);
    color: var(--white);
    padding: 30px;
    border-radius: 15px;
    text-align: center;
}

.limited-notice p {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--accent-gold);
}

/* ============================================
   会社情報セクション
============================================ */
.section-company {
    background-color: var(--bg-light);
}

.company-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.highlight-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: 0 4px 15px var(--shadow);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.highlight-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--shadow-hover);
}

.highlight-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.highlight-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-navy);
    margin-bottom: 15px;
}

.highlight-desc {
    color: var(--text-light);
    line-height: 1.8;
}

.company-info {
    background: var(--white);
    padding: 50px;
    border-radius: 20px;
    box-shadow: 0 4px 20px var(--shadow);
}

.company-info-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-navy);
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--accent-gold);
}

.company-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.company-details p {
    font-size: 1.1rem;
    line-height: 1.8;
}

.company-details strong {
    color: var(--accent-gold);
    font-weight: 600;
    display: inline-block;
    min-width: 120px;
}

.business-info {
    margin-top: 40px;
    padding-top: 40px;
    border-top: 2px solid var(--accent-light-gold);
}

.business-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-navy);
    margin-bottom: 25px;
    text-align: center;
}

.business-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.business-list li {
    padding: 15px 20px;
    background: var(--bg-light);
    border-radius: 8px;
    border-left: 4px solid var(--accent-gold);
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-dark);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.business-list li:hover {
    transform: translateX(5px);
    box-shadow: 0 2px 10px var(--shadow);
}

/* ============================================
   販売会社情報セクション
============================================ */
.section-seller {
    background: var(--white);
}

/* ============================================
   スキームセクション
============================================ */
.section-scheme {
    background: var(--white);
}

.scheme-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.scheme-card {
    background: var(--bg-light);
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: 0 4px 15px var(--shadow);
    border-left: 5px solid var(--accent-gold);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.scheme-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--shadow-hover);
}

.scheme-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-gold);
    margin-bottom: 20px;
}

.scheme-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-navy);
    margin-bottom: 15px;
}

.scheme-description {
    color: var(--text-light);
    line-height: 1.8;
}

/* ============================================
   ご利用の流れセクション
============================================ */
.section-flow {
    background: var(--white);
}

.flow-steps {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.flow-step {
    display: flex;
    gap: 30px;
    align-items: flex-start;
    background: var(--bg-light);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 4px 15px var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
}

.flow-step:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--shadow-hover);
}

.flow-step::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 5px;
    background: linear-gradient(180deg, var(--accent-gold) 0%, #b8941f 100%);
    border-radius: 15px 0 0 15px;
}

.step-number {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--accent-gold) 0%, #b8941f 100%);
    border-radius: 50%;
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
}

.step-label {
    font-size: 0.8rem;
    color: var(--white);
    font-weight: 500;
    text-transform: uppercase;
}

.step-num {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--white);
    line-height: 1;
}

.step-content {
    flex: 1;
}

.step-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-navy);
    margin-bottom: 15px;
}

.step-description {
    font-size: 1.1rem;
    line-height: 1.9;
    color: var(--text-dark);
}

/* ============================================
   FAQセクション
============================================ */
.section-faq {
    background-color: var(--bg-light);
}

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

.faq-item {
    background: var(--white);
    margin-bottom: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px var(--shadow);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 25px 30px;
    background: var(--white);
    border: none;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-navy);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s ease;
    font-family: 'Noto Serif JP', serif;
    min-height: 44px;
}

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

.faq-icon {
    font-size: 1.5rem;
    color: var(--accent-gold);
    font-weight: 700;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.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: 25px 30px;
    color: var(--text-light);
    line-height: 2;
    background: var(--bg-light);
}

/* ============================================
   お問い合わせセクション
============================================ */
.section-contact {
    background: var(--white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    align-items: start;
}

.contact-info {
    background: var(--bg-light);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 4px 15px var(--shadow);
}

.contact-info-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-navy);
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--accent-gold);
}

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

.contact-item {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.contact-label {
    font-weight: 600;
    color: var(--accent-gold);
    font-size: 1.1rem;
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.form-group label {
    font-weight: 600;
    color: var(--primary-navy);
    font-size: 1rem;
}

.required {
    color: #e74c3c;
    font-size: 0.85rem;
    margin-left: 5px;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    font-family: 'Noto Serif JP', serif;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-gold);
}

.form-note {
    font-size: 0.9rem;
    color: var(--text-light);
    margin: 5px 0;
    font-style: italic;
}

.error-message {
    display: none;
    color: #e74c3c;
    font-size: 0.85rem;
    margin-top: 5px;
    font-weight: 500;
}

.form-group.error input,
.form-group.error select,
.form-group.error textarea {
    border-color: #e74c3c;
    background-color: rgba(231, 76, 60, 0.05);
}

.form-group.error label {
    color: #e74c3c;
}

.btn-submit {
    margin-top: 20px;
    width: 100%;
}

.btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ============================================
   モーダル
============================================ */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 10000;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: var(--white);
    padding: 50px 40px;
    border-radius: 20px;
    text-align: center;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 10px 50px rgba(0, 0, 0, 0.3);
    animation: slideUp 0.4s ease;
}

.modal-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 30px;
    background: linear-gradient(135deg, var(--accent-gold) 0%, #b8941f 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--white);
    font-weight: 700;
}

.modal-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-navy);
    margin-bottom: 20px;
}

.modal-message {
    font-size: 1.1rem;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 30px;
}

.modal-close {
    min-width: 200px;
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* ============================================
   フッター
============================================ */
.footer {
    background: var(--primary-navy);
    color: var(--white);
    padding: 40px 0;
    text-align: center;
}

.footer-logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-gold);
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.footer-text {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* ============================================
   レスポンシブデザイン
============================================ */

/* タブレット（768px～1023px） */
@media (min-width: 768px) and (max-width: 1023px) {
    .container {
        padding: 0 30px;
    }
    
    .section {
        padding: 80px 0;
    }
    
    .hero-main-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.3rem;
    }
    
    .copy-line {
        font-size: 1.2rem;
    }
    
    .copy-line.tax-benefit {
        font-size: 1.3rem;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
    
    .about-grid,
    .company-highlights {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid,
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .market-timeline {
        flex-direction: column;
    }
}

/* デスクトップ（1024px以上） */
@media (min-width: 1024px) {
    .container {
        padding: 0 40px;
    }
}

/* スマートフォン（767px以下） */
@media (max-width: 767px) {
    body {
        font-size: 14px;
    }
    
    .container {
        padding: 0 16px;
        width: 100%;
    }
    
    .section {
        padding: 60px 0;
    }
    
    /* ヘッダー */
    .header-content {
        padding: 12px 0;
    }
    
    .logo {
        font-size: 1.4rem;
    }
    
    .nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--primary-navy);
        flex-direction: column;
        padding: 20px;
        gap: 0;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 999;
    }
    
    .nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav a {
        padding: 15px 10px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        font-size: 1rem;
        min-height: 44px;
        display: flex;
        align-items: center;
        border-radius: 0;
    }
    
    .nav a:not(.nav-cta):hover {
        background: rgba(212, 175, 55, 0.1);
    }
    
    .nav-cta {
        margin: 10px 0 !important;
        border-radius: 25px !important;
        text-align: center;
        justify-content: center;
        border-bottom: none !important;
        padding: 15px 20px !important;
    }
    
    .nav a:last-child {
        border-bottom: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
        min-width: 44px;
        min-height: 44px;
        padding: 10px;
    }
    
    /* ヒーローセクション */
    .hero {
        min-height: auto;
        padding: 100px 0 60px;
    }
    
    .hero-main-title {
        font-size: 2rem;
        letter-spacing: 1px;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
        line-height: 1.8;
    }
    
    .hero-additional-copy {
        padding: 20px 16px;
        margin: 30px auto;
    }
    
    .copy-line {
        font-size: 1rem;
        line-height: 1.8;
    }
    
    .copy-line.tax-benefit {
        font-size: 1.1rem;
        margin-top: 15px;
    }
    
    .hero-cta {
        flex-direction: column;
        gap: 12px;
        margin: 40px 0;
    }
    
    .btn {
        width: 100%;
        text-align: center;
        font-size: 1rem;
        padding: 16px 30px;
        min-height: 44px;
    }
    
    .hero-features {
        gap: 15px;
        margin-top: 40px;
    }
    
    .hero-feature-item {
        flex: 1 1 100%;
        min-width: 140px;
        padding: 16px;
    }
    
    .feature-number {
        font-size: 1.5rem;
    }
    
    .feature-label {
        font-size: 0.85rem;
    }
    
    /* セクション共通 */
    .section-title {
        font-size: 1.8rem;
        padding-bottom: 15px;
    }
    
    .section-description {
        font-size: 0.95rem;
        margin-bottom: 40px;
    }
    
    /* Beaconとは */
    .section-what-is {
        padding: 60px 0;
    }
    
    .what-is-text {
        font-size: 1rem;
        padding: 25px 20px;
    }
    
    /* 5つのオススメ理由 */
    .reason-item {
        flex-direction: column;
        padding: 30px 20px;
        gap: 20px;
    }
    
    .reason-number {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
        margin: 0 auto;
    }
    
    .reason-title {
        font-size: 1.4rem;
        text-align: center;
    }
    
    .reason-text {
        font-size: 1rem;
    }
    
    .reason-highlight {
        padding: 20px 16px;
    }
    
    .highlight-subtitle {
        font-size: 1.2rem;
    }
    
    .highlight-list li {
        font-size: 0.95rem;
        padding-left: 25px;
    }
    
    /* グリッドレイアウト */
    .about-grid,
    .features-grid,
    .cases-grid,
    .simulation-examples,
    .company-highlights,
    .scheme-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .specs-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    /* カード系 */
    .about-card,
    .feature-card,
    .case-card,
    .example-card,
    .highlight-card,
    .scheme-card {
        padding: 25px 20px;
    }
    
    .card-title,
    .feature-title,
    .case-company,
    .highlight-title,
    .scheme-title {
        font-size: 1.2rem;
    }
    
    .card-content {
        font-size: 1.3rem;
    }
    
    /* タブとボタン */
    .simulation-tabs {
        flex-direction: column;
        gap: 12px;
    }
    
    .tab-btn {
        width: 100%;
        font-size: 1rem;
        padding: 14px 30px;
        min-height: 44px;
    }
    
    /* タイムライン */
    .market-timeline {
        flex-direction: column;
    }
    
    .timeline-item {
        min-width: 100%;
        padding: 25px 20px;
    }
    
    .timeline-value {
        font-size: 1.5rem;
    }
    
    /* FAQ */
    .faq-question {
        padding: 18px 16px;
        font-size: 1rem;
        min-height: 44px;
    }
    
    .faq-icon {
        font-size: 1.3rem;
        min-width: 44px;
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .faq-answer p {
        padding: 18px 16px;
        font-size: 0.95rem;
    }
    
    /* お問い合わせ */
    .contact-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .contact-info,
    .company-info,
    .tax-benefit-box,
    .specs-box {
        padding: 25px 20px;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 16px;
        padding: 12px;
        min-height: 44px;
    }
    
    .form-group label {
        font-size: 0.95rem;
    }
    
    .form-note {
        font-size: 0.85rem;
    }
    
    .error-message {
        font-size: 0.8rem;
    }
    
    /* モーダル */
    .modal-content {
        padding: 40px 25px;
        width: 95%;
    }
    
    .modal-icon {
        width: 60px;
        height: 60px;
        font-size: 2.5rem;
        margin-bottom: 20px;
    }
    
    .modal-title {
        font-size: 1.6rem;
        margin-bottom: 15px;
    }
    
    .modal-message {
        font-size: 1rem;
        margin-bottom: 25px;
    }
    
    .modal-close {
        min-width: 100%;
    }
    
    /* その他 */
    .example-title {
        font-size: 1.3rem;
    }
    
    .example-item {
        font-size: 0.95rem;
        flex-wrap: wrap;
    }
    
    .limited-notice p {
        font-size: 1.1rem;
    }
    
    .benefit-title {
        font-size: 1.5rem;
    }
    
    .benefit-content {
        font-size: 1rem;
    }
    
    .company-info-title {
        font-size: 1.6rem;
    }
    
    .company-details p {
        font-size: 0.95rem;
    }
    
    .business-title {
        font-size: 1.3rem;
    }
    
    .business-list li {
        padding: 12px 16px;
        font-size: 0.95rem;
    }
}

/* 小型スマートフォン（480px以下） */
@media (max-width: 480px) {
    body {
        font-size: 14px;
    }
    
    .container {
        padding: 0 12px;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .logo {
        font-size: 1.2rem;
    }
    
    .hero {
        padding: 90px 0 50px;
    }
    
    .hero-main-title {
        font-size: 1.6rem;
        letter-spacing: 0.5px;
        margin-bottom: 20px;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        line-height: 1.7;
        margin-bottom: 20px;
    }
    
    .hero-additional-copy {
        padding: 18px 14px;
        margin: 25px auto;
    }
    
    .copy-line {
        font-size: 0.95rem;
        line-height: 1.7;
        margin-bottom: 12px;
    }
    
    .copy-line.tax-benefit {
        font-size: 1rem;
        margin-top: 12px;
    }
    
    .hero-cta {
        margin: 30px 0;
    }
    
    .btn {
        font-size: 0.95rem;
        padding: 14px 25px;
    }
    
    .hero-features {
        gap: 12px;
        margin-top: 30px;
    }
    
    .hero-feature-item {
        padding: 14px 12px;
    }
    
    .feature-number {
        font-size: 1.3rem;
    }
    
    .feature-label {
        font-size: 0.8rem;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .section-description {
        font-size: 0.9rem;
    }
    
    .about-card,
    .feature-card,
    .case-card,
    .example-card,
    .highlight-card,
    .scheme-card {
        padding: 20px 16px;
    }
    
    .contact-info,
    .company-info,
    .tax-benefit-box,
    .specs-box {
        padding: 20px 16px;
    }
    
    .timeline-item {
        padding: 20px 16px;
    }
    
    .faq-question {
        padding: 16px 14px;
        font-size: 0.95rem;
    }
    
    .faq-answer p {
        padding: 16px 14px;
        font-size: 0.9rem;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 16px;
        padding: 12px;
    }
    
    .modal-content {
        padding: 30px 20px;
    }
    
    .modal-icon {
        width: 50px;
        height: 50px;
        font-size: 2rem;
    }
    
    .modal-title {
        font-size: 1.4rem;
    }
    
    .modal-message {
        font-size: 0.95rem;
    }
    
    .business-title {
        font-size: 1.2rem;
    }
    
    .business-list li {
        padding: 10px 14px;
        font-size: 0.9rem;
    }
    
    /* Beaconとは */
    .what-is-text {
        font-size: 0.95rem;
        padding: 20px 16px;
    }
    
    /* 5つのオススメ理由 */
    .reason-item {
        padding: 25px 16px;
    }
    
    .reason-number {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
    }
    
    .reason-title {
        font-size: 1.2rem;
    }
    
    .reason-text {
        font-size: 0.95rem;
    }
    
    .reason-highlight {
        padding: 18px 14px;
    }
    
    .highlight-subtitle {
        font-size: 1.1rem;
    }
    
    .highlight-list li {
        font-size: 0.9rem;
        padding-left: 22px;
    }
}