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

:root {
    /* メインカラー（青） */
    --primary-color: #1e40af;
    --primary-dark: #1e3a8a;
    --primary-light: #3b82f6;
    --primary-lighter: #dbeafe;

    /* サブカラー（オレンジ） */
    --accent-color: #f97316;
    --accent-dark: #ea580c;
    --accent-light: #fb923c;
    --accent-lighter: #fed7aa;

    /* グレースケール */
    --text-dark: #1f2937;
    --text-gray: #4b5563;
    --text-light: #6b7280;
    --border-color: #e5e7eb;
    --bg-gray: #f9fafb;
    --bg-white: #ffffff;

    /* その他 */
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;

    /* シャドウ */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* トランジション */
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-dark);
    line-height: 1.8;
    font-size: 16px;
    font-weight: 400;
    background-color: var(--bg-white);
    overflow-x: hidden;
    letter-spacing: 0.02em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   タイポグラフィ体系
======================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-weight: 700;
    line-height: 1.4;
    margin: 0;
    color: var(--text-dark);
    letter-spacing: 0.02em;
}

h1 {
    font-size: 48px;
    font-weight: 900;
    line-height: 1.35;
    letter-spacing: 0.01em;
}

h2 {
    font-size: 36px;
    font-weight: 800;
    line-height: 1.4;
    letter-spacing: 0.015em;
}

h3 {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.45;
    letter-spacing: 0.02em;
}

h4 {
    font-size: 22px;
    font-weight: 600;
    line-height: 1.5;
    letter-spacing: 0.025em;
}

p {
    font-size: 16px;
    font-weight: 400;
    line-height: 1.85;
    margin: 0;
    letter-spacing: 0.03em;
}

/* リード文・大きめの本文 */
.lead-text {
    font-size: 18px;
    font-weight: 400;
    line-height: 1.9;
    letter-spacing: 0.04em;
}

/* 小さめのテキスト */
.small-text {
    font-size: 14px;
    font-weight: 400;
    line-height: 1.7;
    letter-spacing: 0.025em;
}

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

img {
    max-width: 100%;
    height: auto;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

.sp-only {
    display: none;
}

/* ========================================
   ヘッダー
======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

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

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

.logo-image {
    height: 35px;
    width: auto;
    display: block;
}

.logo h1 {
    font-size: 28px;
    font-weight: 900;
    color: var(--primary-color);
}

.logo .biz {
    color: var(--accent-color);
}

.nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav a {
    font-weight: 500;
    color: var(--text-dark);
}

.nav a:not(.cta-button):not(.login-button) {
    position: relative;
}

.nav a:not(.cta-button):not(.login-button):hover {
    color: var(--primary-color);
}

.nav a:not(.cta-button):not(.login-button)::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

.nav a:not(.cta-button):not(.login-button):hover::after {
    width: 100%;
}

.nav .cta-button {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
    color: white;
    padding: 10px 25px;
    border-radius: 25px;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
    transition: all 0.3s ease;
}

.nav .cta-button.secondary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.3);
}

.nav .cta-button:hover {
    box-shadow: 0 6px 20px rgba(249, 115, 22, 0.4);
    filter: brightness(1.1);
}

.nav .cta-button.secondary:hover {
    box-shadow: 0 8px 24px rgba(30, 64, 175, 0.4);
}

.nav .cta-button:active {
    transform: scale(0.98);
}

.nav .cta-button i {
    margin-left: 5px;
}

/* ログインボタン */
.nav .login-button {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    background-color: transparent;
    color: var(--text-dark);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.3s ease;
}

.nav .login-button:hover {
    background-color: var(--primary-lighter);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.nav .login-button i {
    font-size: 14px;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--primary-color);
    cursor: pointer;
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background-color: white;
    box-shadow: var(--shadow-xl);
    transition: right 0.3s ease;
    z-index: 2000;
    padding: 30px;
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-close {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-dark);
    cursor: pointer;
    margin-bottom: 30px;
}

.mobile-menu ul {
    list-style: none;
}

.mobile-menu ul li {
    margin-bottom: 20px;
}

.mobile-menu ul li a {
    display: block;
    font-size: 18px;
    font-weight: 500;
    padding: 10px;
    color: var(--text-dark);
}

.mobile-menu ul li a.cta-button {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
    color: white;
    text-align: center;
    border-radius: 8px;
    margin-top: 20px;
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-menu ul li a.cta-button::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 0.5s ease;
}

.mobile-menu ul li a.cta-button:active::before {
    left: 100%;
}

.mobile-menu ul li a.cta-button.secondary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    margin-top: 10px;
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.3);
}

.mobile-menu ul li a.cta-button:active {
    transform: scale(0.98);
    box-shadow: 0 2px 8px rgba(249, 115, 22, 0.4);
}

.mobile-menu ul li a.cta-button.secondary:active {
    box-shadow: 0 2px 8px rgba(30, 64, 175, 0.4);
}

.mobile-menu ul li a.login-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background-color: transparent;
    color: var(--text-dark);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    margin-top: 10px;
    padding: 12px;
    text-align: center;
    font-weight: 600;
}

.mobile-menu ul li a.login-button i {
    font-size: 16px;
}

/* ========================================
   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, #1e3a8a 0%, #1e40af 50%, #3b82f6 100%);
    color: white;
    padding-top: 80px;
    overflow: hidden;
}

/* 3D Canvas */
.hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        /* 斜めのライン群 */
        linear-gradient(135deg, transparent 0%, transparent 48%, rgba(59, 130, 246, 0.1) 48%, rgba(59, 130, 246, 0.1) 52%, transparent 52%),
        linear-gradient(135deg, transparent 0%, transparent 23%, rgba(249, 115, 22, 0.08) 23%, rgba(249, 115, 22, 0.08) 25%, transparent 25%),
        linear-gradient(135deg, transparent 0%, transparent 73%, rgba(59, 130, 246, 0.08) 73%, rgba(59, 130, 246, 0.08) 75%, transparent 75%),
        /* 水平ライン */
        linear-gradient(0deg, transparent 0%, transparent 33%, rgba(255, 255, 255, 0.03) 33%, rgba(255, 255, 255, 0.03) 34%, transparent 34%),
        linear-gradient(0deg, transparent 0%, transparent 66%, rgba(255, 255, 255, 0.03) 66%, rgba(255, 255, 255, 0.03) 67%, transparent 67%),
        /* 垂直ライン */
        linear-gradient(90deg, transparent 0%, transparent 20%, rgba(249, 115, 22, 0.05) 20%, rgba(249, 115, 22, 0.05) 20.5%, transparent 20.5%),
        linear-gradient(90deg, transparent 0%, transparent 80%, rgba(249, 115, 22, 0.05) 80%, rgba(249, 115, 22, 0.05) 80.5%, transparent 80.5%);
    opacity: 1;
    z-index: 2;
}

/* 幾何学的な装飾要素 */
.hero-overlay::before {
    content: '';
    position: absolute;
    top: 10%;
    right: 10%;
    width: 300px;
    height: 300px;
    border: 2px solid rgba(249, 115, 22, 0.15);
    border-radius: 50%;
    animation: rotate 30s linear infinite;
}

.hero-overlay::after {
    content: '';
    position: absolute;
    bottom: 15%;
    left: 5%;
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, transparent 0%, transparent 45%, rgba(249, 115, 22, 0.1) 45%, rgba(249, 115, 22, 0.1) 55%, transparent 55%);
    transform: rotate(45deg);
    animation: pulse-shape 8s ease-in-out infinite;
}

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes pulse-shape {
    0%, 100% { opacity: 0.3; transform: rotate(45deg) scale(1); }
    50% { opacity: 0.6; transform: rotate(45deg) scale(1.1); }
}

/* ヒーローイラスト（削除） */
/* .hero-illustration は HTML から削除済み */

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    padding: 60px 40px;
    /* 背景を完全透過に近づけて3Dネットワークを最大限に表示 */
    background: transparent;
    backdrop-filter: none;
    border-radius: 30px;
    /* テキストの視認性向上 */
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5),
                 0 4px 16px rgba(0, 0, 0, 0.3);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: rgba(249, 115, 22, 0.15);
    backdrop-filter: blur(8px);
    border: 2px solid rgba(249, 115, 22, 0.4);
    padding: 10px 24px;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 30px;
    animation: pulse 2s ease-in-out infinite;
    box-shadow: 0 4px 20px rgba(249, 115, 22, 0.3),
                0 0 40px rgba(249, 115, 22, 0.2);
}

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

.hero-badge i {
    color: var(--accent-color);
}

.hero-title-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 20px;
}

.hero-title-box {
    text-align: center;
}

.hero-title {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 52px;
    font-weight: 900;
    line-height: 1.3;
    margin: 0;
    letter-spacing: 0.005em;
    color: white;
    /* 強力なテキストシャドウで可読性向上 */
    text-shadow: 0 3px 12px rgba(0, 0, 0, 0.8),
                 0 6px 24px rgba(0, 0, 0, 0.6),
                 0 0 50px rgba(30, 58, 138, 0.4),
                 2px 2px 4px rgba(0, 0, 0, 0.9);
}

.hero-multiply {
    flex-shrink: 0;
    position: relative;
}

.multiply-symbol {
    font-size: 60px;
    font-weight: 900;
    color: var(--accent-color);
    text-shadow: 0 0 30px rgba(249, 115, 22, 0.6),
                 0 2px 20px rgba(0, 0, 0, 0.3);
    display: block;
    line-height: 1;
    animation: glow-pulse 3s ease-in-out infinite;
}

@keyframes glow-pulse {
    0%, 100% {
        text-shadow: 0 0 30px rgba(249, 115, 22, 0.6),
                     0 2px 20px rgba(0, 0, 0, 0.3);
        transform: scale(1);
    }
    50% {
        text-shadow: 0 0 50px rgba(249, 115, 22, 0.8),
                     0 0 80px rgba(249, 115, 22, 0.5),
                     0 2px 20px rgba(0, 0, 0, 0.3);
        transform: scale(1.1);
    }
}

.hero-subtitle {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 28px;
    font-weight: 700;
    color: var(--accent-light);
    margin-bottom: 30px;
    line-height: 1.5;
    letter-spacing: 0.02em;
    /* 強力なテキストシャドウ */
    text-shadow: 0 3px 12px rgba(0, 0, 0, 0.8),
                 0 6px 24px rgba(0, 0, 0, 0.6),
                 2px 2px 4px rgba(0, 0, 0, 0.9);
}

.hero-description {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    font-weight: 400;
    line-height: 1.9;
    margin-bottom: 40px;
    letter-spacing: 0.04em;
    /* 強力なテキストシャドウ */
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.8),
                 0 4px 16px rgba(0, 0, 0, 0.6),
                 1px 1px 3px rgba(0, 0, 0, 0.9);
    opacity: 0.98;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.hero-notes {
    display: flex;
    gap: 30px;
    justify-content: center;
    flex-wrap: wrap;
    font-size: 14px;
    opacity: 0.95;
    /* テキストシャドウ */
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.7),
                 1px 1px 3px rgba(0, 0, 0, 0.8);
}

.hero-notes p {
    display: flex;
    align-items: center;
    gap: 8px;
}

.hero-notes i {
    color: var(--success-color);
}

.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    opacity: 0.7;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* ========================================
   ボタン
======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border: none;
    border-radius: 12px;
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    font-weight: 700;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-large {
    padding: 18px 45px;
    font-size: 18px;
    font-weight: 700;
    border-radius: 14px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
    color: white;
    box-shadow: 0 6px 20px rgba(249, 115, 22, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(249, 115, 22, 0.4);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: white;
}

/* ========================================
   システムプレビューセクション
======================================== */
.system-preview {
    background: linear-gradient(180deg, white 0%, var(--bg-gray) 50%, white 100%);
    padding: 120px 0;
    position: relative;
    overflow: hidden;
}

.system-preview::before {
    content: '';
    position: absolute;
    top: 0;
    left: -10%;
    width: 40%;
    height: 100%;
    background: linear-gradient(135deg, rgba(30, 64, 175, 0.03), transparent);
    transform: skewX(-15deg);
}

.system-preview::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: -10%;
    width: 40%;
    height: 100%;
    background: linear-gradient(135deg, transparent, rgba(249, 115, 22, 0.03));
    transform: skewX(-15deg);
}

.preview-header {
    text-align: center;
    margin-bottom: 60px;
    position: relative;
    z-index: 1;
}

.preview-label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent-color);
    margin-bottom: 20px;
    padding: 8px 20px;
    background: linear-gradient(135deg, rgba(249, 115, 22, 0.1), rgba(249, 115, 22, 0.05));
    border-radius: 25px;
    border: 2px solid rgba(249, 115, 22, 0.2);
}

.preview-label::before {
    content: '●';
    font-size: 8px;
    animation: pulse-dot 2s ease-in-out infinite;
}

.preview-header h2 {
    font-size: 48px;
    font-weight: 900;
    color: var(--text-dark);
    margin-bottom: 25px;
    line-height: 1.3;
}

.preview-header p {
    font-size: 18px;
    line-height: 1.8;
    color: var(--text-gray);
    max-width: 800px;
    margin: 0 auto;
}

/* デュアルシステム表示 */
.preview-dual-system {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 48px;
    align-items: start;
    margin-top: 20px;
    margin-bottom: 70px;
    position: relative;
    z-index: 1;
}

.preview-system-card {
    background: white;
    border-radius: 24px;
    padding: 40px;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    min-height: 600px;
}

.preview-system-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.preview-system-card .system-badge {
    min-height: 36px;
}

.preview-system-card h3 {
    min-height: 36px;
    display: flex;
    align-items: center;
}

.preview-system-card .system-description {
    min-height: 42px;
    display: flex;
    align-items: center;
}

.preview-system-card .preview-frame {
    min-height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.system-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 20px;
}

.system-badge.business {
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    color: white;
}

.system-badge.owner {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
    color: white;
}

.preview-system-card h3 {
    font-size: 28px;
    font-weight: 900;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.system-description {
    font-size: 15px;
    color: var(--text-gray);
    margin-bottom: 25px;
}

.preview-frame {
    border-radius: 20px;
    padding: 8px;
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.15),
        0 0 0 1px rgba(255, 255, 255, 0.1);
    transition: var(--transition);
    position: relative;
    margin-bottom: 25px;
}

/* パソコン画面風のフレーム */
.biz-frame {
    background: #2d3748;
    max-width: 400px;
    margin: 0 auto 25px;
    border-radius: 12px;
    padding: 0;
    box-shadow:
        0 25px 70px rgba(30, 64, 175, 0.4),
        0 0 0 3px var(--primary-color),
        0 0 0 1px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    border: 3px solid var(--primary-color);
}

.biz-frame .screenshot {
    object-fit: contain;
    object-position: center;
    height: 250px;
    width: 100%;
    padding: 5px;
    background-color: #f8f9fa;
}

.biz-frame::before {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 140px;
    height: 8px;
    background: linear-gradient(90deg, transparent, #2d3748 20%, #2d3748 80%, transparent);
    border-radius: 0 0 8px 8px;
}

.biz-frame::after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 180px;
    height: 4px;
    background: #4a5568;
    border-radius: 4px;
}

/* スマホ画面風のフレーム */
.owner-frame {
    background: #1a202c;
    width: auto;
    max-width: 160px;
    margin: 0 auto 25px;
    border-radius: 32px;
    padding: 12px 8px;
    box-shadow:
        0 25px 70px rgba(249, 115, 22, 0.4),
        0 0 0 3px var(--accent-color),
        inset 0 0 0 2px rgba(255, 255, 255, 0.1);
    position: relative;
    border: 3px solid var(--accent-color);
}

.owner-frame::before {
    content: '';
    position: absolute;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 18px;
    background: #000;
    border-radius: 0 0 12px 12px;
    z-index: 2;
}

.owner-frame::after {
    content: '';
    position: absolute;
    top: 22px;
    left: 50%;
    transform: translateX(-50%);
    width: 8px;
    height: 8px;
    background: rgba(100, 100, 150, 0.3);
    border-radius: 50%;
    z-index: 3;
}

.owner-frame .screenshot {
    height: auto;
    width: 100%;
    max-height: 280px;
    object-fit: contain;
    border-radius: 24px;
}

.preview-frame:hover {
    transform: translateY(-5px);
    box-shadow:
        0 30px 80px rgba(0, 0, 0, 0.2),
        0 0 0 1px rgba(255, 255, 255, 0.2);
}

.preview-frame-header {
    background: linear-gradient(180deg, #3d4a5c, #2d3748);
    padding: 10px 15px;
    border-radius: 8px 8px 0 0;
    display: flex;
    gap: 6px;
    align-items: center;
    position: relative;
}

.preview-frame-header.mobile {
    display: none;
}

.frame-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.3);
}

.frame-dot:nth-child(1) {
    background-color: #ff5f57;
}

.frame-dot:nth-child(2) {
    background-color: #ffbd2e;
}

.frame-dot:nth-child(3) {
    background-color: #28ca42;
}

.screenshot {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 0 0 6px 6px;
    object-fit: contain;
}

.mobile-screenshot {
    border-radius: 24px;
}

.system-features {
    list-style: none;
    margin-bottom: 20px;
    min-height: 180px;
    flex-grow: 1;
}

.system-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 14px;
    color: var(--text-dark);
    min-height: 32px;
}

.system-features li i {
    color: var(--success-color);
    font-size: 16px;
    flex-shrink: 0;
}

.app-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-color);
    font-weight: 600;
    font-size: 14px;
    padding: 10px 0;
    transition: var(--transition);
}

.app-link:hover {
    gap: 12px;
    color: var(--accent-dark);
}

/* 連携アイコン */
.system-connector {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    position: relative;
}

.connector-line {
    width: 3px;
    height: 100px;
    background: linear-gradient(180deg, var(--primary-color) 0%, var(--accent-color) 100%);
    position: relative;
}

.connector-line::before,
.connector-line::after {
    content: '';
    position: absolute;
    left: 50%;
    width: 12px;
    height: 12px;
    background: var(--primary-color);
    border-radius: 50%;
    transform: translateX(-50%);
}

.connector-line::before {
    top: -6px;
}

.connector-line::after {
    bottom: -6px;
    background: var(--accent-color);
}

.connector-icon {
    background: white;
    border: 3px solid transparent;
    background-clip: padding-box;
    position: relative;
    padding: 20px 30px;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.connector-icon::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 10px;
    z-index: -1;
    padding: 3px;
    -webkit-mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
}

.connector-icon:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
}

.connector-icon i {
    font-size: 32px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    margin-bottom: 8px;
}

.connector-icon span {
    font-size: 13px;
    font-weight: 700;
    text-align: center;
    display: block;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    white-space: nowrap;
}

/* メリット表示 */
.preview-benefit {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    position: relative;
    z-index: 1;
}

.benefit-card {
    background: white;
    padding: 35px 30px;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.benefit-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.benefit-card i {
    font-size: 40px;
    color: var(--accent-color);
    margin-bottom: 20px;
    display: block;
}

.benefit-card h4 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.benefit-card p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-gray);
}

/* ========================================
   セクション共通
======================================== */
section {
    padding: 120px 0;
    position: relative;
}

/* セクション間の控えめなボーダーライン */
section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 1200px;
    height: 1px;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(30, 64, 175, 0.1) 20%,
        rgba(30, 64, 175, 0.15) 50%,
        rgba(30, 64, 175, 0.1) 80%,
        transparent 100%);
}

/* 最初のセクション（ヒーロー）はボーダーなし */
section.hero::before {
    display: none;
}



.section-header {
    text-align: center;
    margin-bottom: 60px;
    position: relative;
}

/* セクションヘッダー下の装飾ライン */
.section-header::after {
    content: '';
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg,
        var(--primary-color) 0%,
        var(--accent-color) 100%);
    border-radius: 2px;
}

.section-label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent-color);
    margin-bottom: 20px;
    padding: 8px 20px;
    background: linear-gradient(135deg, rgba(249, 115, 22, 0.1), rgba(249, 115, 22, 0.05));
    border-radius: 25px;
    border: 2px solid rgba(249, 115, 22, 0.2);
}

.section-label::before {
    content: '●';
    font-size: 8px;
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* 視線誘導用の装飾アニメーション */
@keyframes float-up-down {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

@keyframes slide-in-right {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slide-in-left {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.section-title {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 40px;
    font-weight: 800;
    color: #113960;
    margin-bottom: 24px;
    line-height: 1.4;
    letter-spacing: 0.01em;
}

.section-description {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    font-weight: 400;
    color: var(--text-gray);
    line-height: 1.9;
    letter-spacing: 0.04em;
}

/* セクション内CTA */
.section-cta {
    text-align: center;
    margin-top: 60px;
    padding: 50px 30px;
    background: linear-gradient(135deg, rgba(249, 115, 22, 0.05) 0%, rgba(30, 64, 175, 0.05) 100%);
    border-radius: 20px;
    border: 2px solid rgba(249, 115, 22, 0.15);
    position: relative;
    overflow: hidden;
}

.section-cta::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(249, 115, 22, 0.08) 0%, transparent 70%);
    animation: pulse-bg 4s ease-in-out infinite;
}

@keyframes pulse-bg {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.section-cta-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 25px;
    line-height: 1.6;
    letter-spacing: 0.02em;
    position: relative;
    z-index: 1;
}

.section-cta .btn {
    position: relative;
    z-index: 1;
    box-shadow: 0 8px 24px rgba(249, 115, 22, 0.3);
    animation: cta-pulse 2s ease-in-out infinite;
}

@keyframes cta-pulse {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.section-cta .btn:hover {
    transform: translateY(-8px) scale(1.05);
    box-shadow: 0 12px 32px rgba(249, 115, 22, 0.4);
}

/* ========================================
   サービス概要セクション
======================================== */
.about {
    background: linear-gradient(180deg, #f0f9ff 0%, #e0f2fe 100%);
    position: relative;
}

.about-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 20px;
    margin-bottom: 70px;
}

.about-card {
    background-color: white;
    padding: 45px 35px;
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(30, 64, 175, 0.08);
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.about-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 12px 40px rgba(30, 64, 175, 0.15);
}

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

.about-card:hover .about-icon {
    transform: scale(1.1) rotate(5deg);
    animation: float-up-down 2s ease-in-out infinite;
}

.about-icon {
    width: 90px;
    height: 90px;
    margin: 0 auto 30px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    color: white;
    box-shadow: 0 8px 20px rgba(30, 64, 175, 0.25);
    position: relative;
}

.about-icon::after {
    content: '';
    position: absolute;
    inset: -8px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    opacity: 0.15;
    z-index: -1;
}

.about-icon {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.about-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
    line-height: 1.5;
    letter-spacing: 0.025em;
}

.about-card p {
    color: var(--text-gray);
    line-height: 1.8;
    letter-spacing: 0.03em;
}

.about-integration {
    background-color: white;
    border-radius: 20px;
    padding: 50px;
    box-shadow: var(--shadow-lg);
}

.integration-info h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 20px;
    line-height: 1.45;
    letter-spacing: 0.02em;
}

.integration-info p {
    color: var(--text-gray);
    line-height: 1.85;
    margin-bottom: 30px;
    letter-spacing: 0.03em;
}

.integration-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.system-box {
    background-color: var(--bg-gray);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 30px 20px;
    text-align: center;
    min-width: 150px;
    transition: var(--transition);
}

.system-box:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.system-box i {
    font-size: 36px;
    margin-bottom: 15px;
    display: block;
}

.system-box.existing i {
    color: var(--text-gray);
}

.system-box.new {
    background: linear-gradient(135deg, var(--primary-lighter), white);
    border-color: var(--primary-light);
}

.system-box.new i {
    color: var(--primary-color);
}

.system-box.result {
    background: linear-gradient(135deg, var(--accent-lighter), white);
    border-color: var(--accent-light);
}

.system-box.result i {
    color: var(--accent-color);
}

.system-box span {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
}

.plus-sign,
.arrow-sign {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-light);
}

/* ========================================
   課題解決セクション
======================================== */
.problems {
    background: linear-gradient(180deg, #fff7ed 0%, #ffedd5 100%);
    position: relative;
    overflow: hidden;
}

.problems-list {
    display: grid;
    gap: 36px;
    margin-top: 20px;
}

.problem-item {
    display: flex;
    gap: 28px;
    align-items: flex-start;
    margin-bottom: 0;
    transition: all 0.3s ease;
}

.problem-item:hover {
    transform: translateX(5px);
}

.problem-number {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 900;
    transition: all 0.3s ease;
}

.problem-item:hover .problem-number {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.3);
}

.problem-content {
    flex: 1;
    display: flex;
    gap: 30px;
    align-items: center;
    background-color: var(--bg-gray);
    padding: 30px;
    border-radius: 16px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.problem-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.problem-item:hover .problem-content::before {
    transform: scaleX(1);
}

.problem-item:hover .problem-content {
    background-color: white;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.problem-before,
.problem-after {
    flex: 1;
    text-align: center;
}

.problem-before i {
    font-size: 36px;
    color: var(--error-color);
    margin-bottom: 15px;
    transition: all 0.3s ease;
}

.problem-item:hover .problem-before i {
    transform: scale(1.1);
}

.problem-after i {
    font-size: 36px;
    color: var(--success-color);
    margin-bottom: 15px;
    transition: all 0.3s ease;
}

.problem-item:hover .problem-after i {
    transform: scale(1.1);
}

.problem-before h4,
.problem-after h4 {
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
    color: var(--text-light);
}

.problem-before p,
.problem-after p {
    font-size: 16px;
    line-height: 1.75;
    color: var(--text-dark);
    letter-spacing: 0.03em;
}

.problem-after p strong {
    color: var(--accent-color);
    font-weight: 700;
}

.problem-arrow {
    flex-shrink: 0;
    font-size: 24px;
    color: var(--accent-color);
    transition: all 0.3s ease;
}

.problem-item:hover .problem-arrow {
    transform: translateX(5px);
    color: var(--accent-dark);
}

/* ========================================
   機能セクション
======================================== */
.features {
    background: linear-gradient(180deg, #fef3c7 0%, white 50%, #f0f9ff 100%);
    position: relative;
    overflow: hidden;
    padding-bottom: 60px !important;
}

.feature-detail {
    position: relative;
    background-color: white;
    border-radius: 20px;
    padding: 50px;
    margin-bottom: 36px;
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--border-color);
    transition: var(--transition);
}

.feature-detail:first-of-type {
    margin-top: 20px;
}

.feature-detail:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-5px) scale(1.01);
}

.feature-detail:hover .feature-icon-large {
    transform: scale(1.05) rotate(-5deg);
    animation: float-up-down 3s ease-in-out infinite;
}

.feature-detail.highlight {
    background: linear-gradient(135deg, rgba(249, 115, 22, 0.03), rgba(30, 64, 175, 0.03));
    border: 2px solid var(--accent-color);
}

.feature-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.feature-badge.available {
    background-color: var(--success-color);
    color: white;
}

.feature-badge.coming {
    background: linear-gradient(135deg, #7c3aed, #5b21b6);
    color: white;
    animation: pulse-glow 2s ease-in-out infinite;
    box-shadow: 0 0 20px rgba(124, 58, 237, 0.4);
}

@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(124, 58, 237, 0.4);
    }
    50% {
        box-shadow: 0 0 30px rgba(124, 58, 237, 0.7);
    }
}

.feature-spotlight {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
    color: white;
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 30px;
    box-shadow: var(--shadow-md);
}

.feature-spotlight i {
    font-size: 16px;
}

.feature-detail-content {
    display: flex;
    gap: 48px;
    align-items: center;
}

.feature-detail.reverse .feature-detail-content {
    flex-direction: row-reverse;
}

.feature-detail-text {
    flex: 1;
}

.feature-number {
    display: flex;
    align-items: baseline;
    gap: 10px;
    margin-bottom: 16px;
}

.feature-number span {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-light);
}

.feature-number strong {
    font-size: 36px;
    font-weight: 900;
    color: var(--primary-color);
}

.feature-detail-text h3 {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-dark);
    line-height: 1.5;
    letter-spacing: 0.02em;
}

.feature-description {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    font-weight: 400;
    line-height: 1.95;
    color: var(--text-gray);
    margin-bottom: 24px;
    letter-spacing: 0.04em;
}

.feature-description strong {
    color: var(--accent-color);
    font-weight: 700;
}

.feature-points {
    list-style: none;
    margin-bottom: 20px;
}

.feature-points li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 12px;
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 15px;
    font-weight: 400;
    color: var(--text-dark);
    line-height: 1.8;
    letter-spacing: 0.03em;
}

.feature-points li i {
    color: var(--success-color);
    font-size: 18px;
    flex-shrink: 0;
    margin-top: 2px;
}

.feature-points li i.fa-star {
    color: var(--accent-color);
}

.feature-points li strong {
    color: var(--accent-color);
    font-weight: 700;
}

.feature-benefit {
    background-color: var(--accent-lighter);
    border-left: 4px solid var(--accent-color);
    padding: 20px;
    border-radius: 8px;
    display: flex;
    gap: 15px;
    align-items: flex-start;
}

.feature-benefit i {
    font-size: 24px;
    color: var(--accent-color);
    flex-shrink: 0;
}

.feature-benefit p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-dark);
    letter-spacing: 0.03em;
}

.feature-detail-visual {
    flex-shrink: 0;
    text-align: center;
}

.feature-icon-large {
    width: 200px;
    height: 200px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
    color: white;
    box-shadow: var(--shadow-xl);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-icon-large.highlight {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
}

.visual-label {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-gray);
}

/* 機能イラスト */
.feature-illustration {
    width: 200px;
    height: 200px;
    margin: 0 auto 20px;
    border-radius: 20px;
    object-fit: cover;
    box-shadow: var(--shadow-xl);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-detail:hover .feature-illustration {
    transform: translateY(-10px) scale(1.05);
    box-shadow: 0 20px 40px rgba(30, 64, 175, 0.2);
}

/* ========================================
   料金セクション
======================================== */
.pricing {
    background: linear-gradient(180deg, #f0f9ff 0%, #dbeafe 100%);
    position: relative;
    overflow: hidden;
    padding-top: 60px !important;
}

.pricing-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    margin-bottom: 50px;
    padding-top: 20px;
}

.pricing-card {
    background-color: white;
    border-radius: 24px;
    padding: 50px 40px;
    box-shadow: 0 6px 30px rgba(0, 0, 0, 0.1);
    position: relative;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(30, 64, 175, 0.1);
    overflow: visible;
    margin-top: 30px;
}

.pricing-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 50px rgba(30, 64, 175, 0.2);
}

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

.pricing-card.special {
    background: linear-gradient(135deg, #fff7ed 0%, #ffedd5 50%, #fed7aa 100%);
    border: 3px solid var(--accent-color);
    box-shadow: 0 10px 40px rgba(249, 115, 22, 0.15);
}

.pricing-badge {
    position: absolute;
    top: -18px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
    color: white;
    padding: 12px 24px;
    border-radius: 25px;
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 14px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: var(--shadow-md);
    white-space: nowrap;
    line-height: 1.4;
}

.pricing-header {
    text-align: center;
    margin-bottom: 28px;
    padding-bottom: 28px;
    border-bottom: 2px solid var(--border-color);
}

.pricing-header h3 {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-dark);
    line-height: 1.5;
    letter-spacing: 0.02em;
}

.pricing-description {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 14px;
    font-weight: 400;
    color: var(--text-gray);
    line-height: 1.75;
    letter-spacing: 0.03em;
}

.pricing-price {
    text-align: center;
    margin-bottom: 36px;
}

.price-amount {
    font-size: 56px;
    font-weight: 900;
    color: var(--primary-color);
}

.price-amount.free {
    color: var(--accent-color);
}

.price-unit {
    font-size: 18px;
    color: var(--text-gray);
    margin-left: 5px;
}

.pricing-features {
    list-style: none;
    margin-bottom: 36px;
}

.pricing-features li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 14px;
    font-size: 15px;
    color: var(--text-dark);
    line-height: 1.8;
    letter-spacing: 0.03em;
}

.pricing-features li i {
    color: var(--success-color);
    font-size: 18px;
    flex-shrink: 0;
    margin-top: 2px;
}

.pricing-features li strong {
    font-weight: 700;
}

.pricing-button {
    text-align: center;
}

.pricing-note {
    text-align: center;
    font-size: 13px;
    color: var(--text-gray);
    margin-top: 20px;
    padding: 15px;
    background-color: var(--accent-lighter);
    border-radius: 8px;
}

.pricing-note i {
    color: var(--accent-color);
    margin-right: 5px;
}

.pricing-notes {
    background-color: white;
    padding: 40px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
}

.pricing-notes h4 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.pricing-notes ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.pricing-notes li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 15px;
    color: var(--text-dark);
}

.pricing-notes li i {
    color: var(--primary-color);
    font-size: 18px;
    flex-shrink: 0;
    margin-top: 2px;
}

/* ========================================
   コラム機能セクション
======================================== */
.columns {
    background: linear-gradient(180deg, #fef3c7 0%, #fef9e7 50%, #ffffff 100%);
    position: relative;
}

/* ヘッダー部分 */
.columns-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-subtitle {
    font-size: 15px;
    color: var(--text-light);
    margin-top: 8px;
    margin-bottom: 0;
    font-weight: 500;
}

/* コンテンツ連携の情報ボックス */
.columns-info-box {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    background: linear-gradient(135deg, #e0f2fe 0%, #bae6fd 100%);
    border-left: 4px solid var(--primary-color);
    padding: 25px 30px;
    margin: 20px 0 0;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(30, 64, 175, 0.1);
    transition: all 0.3s ease;
}

.columns-info-box:hover {
    box-shadow: 0 4px 20px rgba(30, 64, 175, 0.15);
    transform: translateY(-2px);
    border-left-width: 5px;
}

.info-box-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    align-self: flex-start; /* 上部に固定 */
}

.info-box-content {
    flex: 1;
    text-align: left; /* 左寄せで読みやすく */
    min-width: 0; /* flexboxの縮小を許可 */
    display: flex;
    flex-direction: column;
}

.info-box-content h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-dark);
    margin: 0 0 15px 0;
    line-height: 1.6;
    text-align: left;
    display: flex;
    align-items: center;
    min-height: 40px;
    letter-spacing: 0.025em;
}

.info-box-content p {
    font-size: 15px;
    font-weight: 400;
    color: var(--text-gray);
    line-height: 1.9;
    margin: 0;
    text-align: left;
    letter-spacing: 0.035em;
}

/* セクションタイトル（共通） */
.columns-section-title {
    text-align: center;
    font-size: 24px;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 40px;
}

/* 4つの特徴エリア */
.columns-features-section {
    background: linear-gradient(135deg, #fff7ed 0%, #ffedd5 100%);
    border-radius: 20px;
    padding: 48px 40px;
    margin-bottom: 48px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.columns-features {
    max-width: 1200px;
    margin: 0 auto;
}

.feature-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-card-item {
    background-color: white;
    border-radius: 12px;
    padding: 25px 18px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.feature-card-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-color);
}

.feature-card-icon {
    width: 55px;
    height: 55px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    color: white;
    font-size: 22px;
}

.feature-card-item p {
    font-size: 14px;
    line-height: 1.75;
    color: var(--text-dark);
    font-weight: 500;
    letter-spacing: 0.03em;
}

/* 6ジャンルエリア */
.columns-genres-section {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-radius: 20px;
    padding: 48px 40px;
    margin-bottom: 48px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

/* 6ジャンル */
.columns-genres {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin: 0 auto;
    max-width: 1000px;
}

.genre-card {
    background-color: white;
    border-radius: 14px;
    padding: 25px 18px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.genre-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.genre-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    color: white;
    font-size: 28px;
}

.genre-card h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.6;
    letter-spacing: 0.03em;
}

/* 下部：コラム掲載エリア */
.columns-display {
    margin-top: 60px;
    padding-top: 48px;
    border-top: 2px solid rgba(30, 64, 175, 0.15);
}

.columns-display-title {
    text-align: center;
    font-size: 30px;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 40px;
}

.column-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 48px;
}

.column-card {
    background-color: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.column-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.column-card-link {
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.column-card-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background-color: var(--bg-gray);
}

.column-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.column-card-content {
    padding: 25px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.column-category {
    display: inline-block;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    color: white;
    margin-bottom: 15px;
    align-self: flex-start;
}

.column-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.65;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    letter-spacing: 0.025em;
}

.column-author {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 12px;
}

.column-excerpt {
    font-size: 14px;
    color: var(--text-dark);
    line-height: 1.85;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    letter-spacing: 0.03em;
}

.columns-cta {
    text-align: center;
    margin-top: 48px;
}

/* ========================================
   導入の流れセクション
======================================== */
.flow {
    background: linear-gradient(135deg, white 0%, #fef3c7 50%, white 100%);
    position: relative;
    overflow: hidden;
}

.flow-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
    margin-top: 0;
}

.flow-step {
    flex: 1;
    min-width: 250px;
    max-width: 300px;
    height: 540px;
    background-color: var(--bg-gray);
    padding: 40px 30px 30px;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    border-top: 3px solid transparent;
}

.flow-step::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: 16px 16px 0 0;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.flow-step:hover::before {
    opacity: 1;
}

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

.flow-step-number {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 5px;
}

.flow-step-number strong {
    font-size: 18px;
}

.flow-step-icon {
    width: 80px;
    height: 80px;
    margin: 20px auto 20px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: white;
}

.flow-step h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text-dark);
    line-height: 1.5;
    letter-spacing: 0.025em;
}

.flow-step p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-gray);
    letter-spacing: 0.03em;
    text-align: left;
    flex: 1;
    margin-bottom: 0;
}

.flow-step-detail {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
    padding: 10px 15px;
    background: var(--primary-lighter);
    border-radius: 8px;
    font-size: 13px;
    color: var(--primary-dark);
    font-weight: 600;
    flex-shrink: 0;
}

.flow-step-detail i {
    font-size: 14px;
    color: var(--primary-color);
}

.flow-arrow {
    font-size: 32px;
    color: var(--accent-color);
    flex-shrink: 0;
}

/* ========================================
   FAQセクション
======================================== */
.faq {
    background: linear-gradient(180deg, white 0%, #f0f9ff 100%);
    position: relative;
    overflow: hidden;
}

.faq-list {
    max-width: 900px;
    margin: 20px auto 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background-color: white;
    border-radius: 12px;
    margin-bottom: 0;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition);
    border-left: 4px solid transparent;
}

.faq-item:hover {
    border-left-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 25px 30px;
    text-align: left;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    transition: var(--transition);
    position: relative;
    line-height: 1.6;
    letter-spacing: 0.025em;
}

.faq-question:hover {
    color: var(--primary-color);
}

.faq-question i {
    font-size: 20px;
    color: var(--primary-color);
    transition: var(--transition);
    flex-shrink: 0;
}

.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 30px 25px;
    line-height: 1.9;
    letter-spacing: 0.04em;
}

/* Contact Links in Success Message */
.contact-link {
    color: var(--primary-color);
    text-decoration: underline;
    font-weight: 600;
    transition: var(--transition);
}

.contact-link:hover {
    color: var(--accent-color);
    text-decoration: none;
    color: var(--text-gray);
}

/* ========================================
   申し込みフォームセクション
======================================== */
.apply {
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 50%, #93c5fd 100%);
    color: var(--text-dark);
    position: relative;
    overflow: hidden;
}

.apply::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(249, 115, 22, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.apply-header {
    position: relative;
    z-index: 1;
}

.apply-form {
    position: relative;
    z-index: 1;
}

.apply-header {
    text-align: center;
    margin-bottom: 56px;
}

.apply-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
    color: white;
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 20px;
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
}

.apply-header h2 {
    font-size: 42px;
    font-weight: 900;
    margin-bottom: 20px;
}

.apply-header p {
    font-size: 18px;
    opacity: 0.9;
}

.apply-form {
    max-width: 800px;
    margin: 0 auto;
    background-color: white;
    padding: 50px;
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
}

.form-group {
    margin-bottom: 24px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.form-group label {
    display: block;
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
    font-size: 15px;
    letter-spacing: 0.025em;
}

.required {
    color: var(--error-color);
    font-size: 12px;
    margin-left: 5px;
}

.optional {
    color: var(--text-light);
    font-size: 12px;
    margin-left: 5px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 15px;
    font-weight: 400;
    transition: var(--transition);
    line-height: 1.6;
    letter-spacing: 0.02em;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.form-group textarea {
    resize: vertical;
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 32px;
}

.form-checkbox input[type="checkbox"] {
    margin-top: 4px;
    flex-shrink: 0;
}

.form-checkbox label {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 14px;
    font-weight: 400;
    color: var(--text-dark);
    line-height: 1.7;
    letter-spacing: 0.025em;
}

.form-checkbox a {
    color: var(--primary-color);
    text-decoration: underline;
}

.btn-submit {
    width: 100%;
}

.form-note {
    text-align: center;
    font-size: 13px;
    color: var(--text-gray);
    margin-top: 20px;
}

.form-note i {
    color: var(--success-color);
    margin-right: 5px;
}

.apply-success {
    max-width: 600px;
    margin: 0 auto;
    background-color: white;
    padding: 60px 40px;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow-xl);
}

.success-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 30px;
    background-color: var(--success-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 50px;
    color: white;
}

.apply-success h3 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.apply-success p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-gray);
    margin-bottom: 30px;
}

/* ========================================
   CTAセクション
======================================== */
.cta {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: var(--text-dark);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta::after {
    content: '';
    position: absolute;
    top: 120px;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(90deg, rgba(249, 115, 22, 0.08) 1px, transparent 1px),
        linear-gradient(0deg, rgba(249, 115, 22, 0.08) 1px, transparent 1px);
    background-size: 60px 60px;
    z-index: 0;
}

/* CTAイラスト */
.cta-illustration {
    position: relative;
    z-index: 1;
    max-width: 600px;
    margin: 0 auto 40px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(249, 115, 22, 0.15);
}

.cta-illustration img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 20px;
    transition: all 0.4s ease;
}

.cta-illustration:hover img {
    transform: scale(1.03);
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-content h2 {
    font-size: 38px;
    font-weight: 900;
    margin-bottom: 20px;
    line-height: 1.4;
    color: #113960;
}

.cta-content p {
    font-size: 18px;
    margin-bottom: 40px;
    color: var(--text-gray);
}

.cta-note {
    font-size: 14px;
    margin-top: 20px;
    color: var(--text-gray);
}

.cta-note i {
    margin: 0 5px;
    color: var(--accent-color);
}

/* ========================================
   フッター
======================================== */
.footer {
    background: linear-gradient(180deg, #e0f2fe 0%, #bfdbfe 100%);
    color: var(--text-dark);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo img {
    width: 200px;
    margin-bottom: 15px;
}

.footer-logo h3 {
    font-size: 28px;
    font-weight: 900;
    margin-bottom: 15px;
}

.footer-logo .biz {
    color: var(--accent-color);
}

.footer-logo p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-gray);
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background-color: rgba(30, 64, 175, 0.1);
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: var(--transition);
}

.footer-social a:hover {
    background-color: var(--accent-color);
    color: white;
    transform: translateY(-3px);
}

.footer-section h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 12px;
    font-size: 14px;
}

.footer-section ul li a {
    color: var(--text-gray);
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--accent-color);
}

.footer-section ul li i {
    margin-right: 8px;
    color: var(--accent-color);
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(30, 64, 175, 0.15);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    color: var(--text-gray);
}

.footer-links {
    display: flex;
    gap: 25px;
}

.footer-links a {
    color: var(--text-gray);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent-color);
}

/* ========================================
   ページトップボタン
======================================== */
.page-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

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

.page-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

/* ========================================
   フローティングCTAボタン
======================================== */
.floating-cta {
    position: fixed;
    bottom: 30px;
    left: 30px;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 28px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
    color: white;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 700;
    text-decoration: none;
    box-shadow: 0 8px 24px rgba(249, 115, 22, 0.4);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(100px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.floating-cta:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 12px 32px rgba(249, 115, 22, 0.5);
}

.floating-cta i {
    font-size: 18px;
    animation: rocket-shake 1.5s ease-in-out infinite;
}

@keyframes rocket-shake {
    0%, 100% { transform: translateX(0) rotate(0deg); }
    25% { transform: translateX(-2px) rotate(-5deg); }
    75% { transform: translateX(2px) rotate(5deg); }
}

.floating-cta span {
    font-size: 16px;
    letter-spacing: 0.02em;
}

/* ========================================
   レスポンシブ（タブレット）
======================================== */
@media (max-width: 1024px) {
    .section-title {
        font-size: 36px;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .pricing-content {
        grid-template-columns: 1fr;
    }

    .pricing-notes ul {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }

    .flow-arrow {
        display: none;
    }

    /* ログインボタンをコンパクトに */
    .nav .login-button {
        padding: 8px 16px;
        font-size: 13px;
    }

    /* コラムセクション（タブレット） */
    .columns-features-section,
    .columns-genres-section {
        padding: 40px 30px;
    }

    .feature-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .columns-genres {
        grid-template-columns: repeat(2, 1fr);
    }

    .column-cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
}

/* ========================================
   レスポンシブ（スマートフォン）
======================================== */
@media (max-width: 768px) {
    .sp-only {
        display: inline;
    }

    /* ヘッダー */
    .nav {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }

    /* ヒーロー（スマホ最適化） */
    .hero {
        min-height: auto;
        padding: 100px 0 60px; /* 上部余白を削減 */
    }

    .hero-content {
        padding: 30px 20px; /* 内側余白を削減 */
    }

    .hero-badge {
        font-size: 13px; /* バッジ文字を少し縮小 */
        padding: 8px 18px;
        margin-bottom: 20px; /* 上部余白を削減 */
    }

    .hero-title-wrapper {
        gap: 10px;
        margin-bottom: 15px; /* 下部余白を削減 */
    }

    .hero-title {
        font-size: 28px;
        line-height: 1.4;
        letter-spacing: 0.015em;
    }

    .multiply-symbol {
        font-size: 40px;
    }

    .hero-subtitle {
        font-size: 18px;
        line-height: 1.6;
        margin-bottom: 20px;
        letter-spacing: 0.025em;
    }

    .hero-description {
        font-size: 14px;
        line-height: 1.8;
        margin-bottom: 25px;
        letter-spacing: 0.035em;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
        margin-bottom: 25px;
        gap: 15px;
    }

    .hero-buttons .btn {
        width: 100%;
        padding: 14px 24px; /* ボタンの余白調整 */
        font-size: 15px;
    }

    .hero-notes {
        flex-direction: column;
        gap: 12px;
        font-size: 13px; /* 文字サイズ調整 */
    }

    /* セクション（スマホ最適化） */
    section {
        padding: 60px 0; /* 各セクションの余白を調整 */
    }

    .section-title {
        font-size: 28px;
        line-height: 1.5;
        margin-bottom: 20px;
        letter-spacing: 0.02em;
    }

    .section-description {
        font-size: 14px;
        line-height: 1.8;
        letter-spacing: 0.035em;
    }

    .container {
        padding: 0 20px; /* コンテナの左右余白を調整 */
    }

    /* システムプレビュー */
    .system-preview {
        padding: 70px 0; /* 余白を調整 */
    }

    .preview-header h2 {
        font-size: 28px; /* 読みやすく調整 */
        line-height: 1.4;
        margin-bottom: 20px;
    }

    .preview-header p {
        font-size: 14px; /* 読みやすく調整 */
        line-height: 1.7;
    }

    .preview-dual-system {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .system-connector {
        order: 2;
        padding: 30px 20px;
    }

    .connector-line {
        height: 60px;
    }

    .biz-frame {
        max-width: 100%;
    }

    .biz-frame .screenshot {
        height: 220px;
        padding: 4px;
    }

    .owner-frame {
        max-width: 140px;
    }

    .owner-frame .screenshot {
        max-height: 240px;
    }

    .preview-system-card:nth-child(1) {
        order: 1;
    }

    .preview-system-card:nth-child(3) {
        order: 3;
    }

    .preview-benefit {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    /* 統合ビジュアル */
    .integration-visual {
        flex-direction: column;
    }

    .plus-sign,
    .arrow-sign {
        transform: rotate(90deg);
    }

    /* 課題解決 */
    .problems-list {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .problem-item {
        flex-direction: column;
        width: 100%;
        max-width: 500px;
        align-items: center;
        text-align: center;
    }

    .problem-content {
        flex-direction: column;
        gap: 20px;
        width: 100%;
    }

    .problem-arrow {
        transform: rotate(90deg);
    }

    .problem-before h4,
    .problem-after h4 {
        font-size: 15px; /* 読みやすく調整 */
        margin-bottom: 8px;
    }

    .problem-before p,
    .problem-after p {
        font-size: 13px; /* 読みやすく調整 */
        line-height: 1.6;
    }

    /* 料金プラン（スマホ最適化） */
    .pricing-card h3 {
        font-size: 22px; /* 読みやすく調整 */
        margin-bottom: 10px;
    }

    .pricing-price {
        font-size: 32px; /* 読みやすく調整 */
        margin-bottom: 15px;
    }

    .pricing-price small {
        font-size: 16px;
    }

    .pricing-features li {
        font-size: 14px; /* 読みやすく調整 */
        padding: 10px 0;
    }

    .pricing-notes h4 {
        font-size: 18px;
        margin-bottom: 12px;
    }

    .pricing-notes li {
        font-size: 14px;
        line-height: 1.7;
    }

    /* FAQ（スマホ修正） */
    .faq-item {
        margin-left: 0; /* 左余白をリセット */
        margin-right: 0; /* 右余白をリセット */
    }

    .faq-question {
        font-size: 15px; /* 読みやすく調整 */
        padding: 15px 45px 15px 15px; /* 左右パディング修正 */
        text-align: left; /* 左揃えを確実に */
    }

    .faq-question i {
        position: absolute;
        right: 15px; /* アイコン位置を調整 */
        font-size: 18px;
    }

    .faq-answer p {
        font-size: 14px; /* 読みやすく調整 */
        padding: 0 15px 15px 15px; /* 左右パディング修正 */
        line-height: 1.7;
        text-align: left; /* 左揃えを確実に */
    }

    /* 導入の流れ（スマホ最適化） */
    .flow-step h3 {
        font-size: 18px;
        margin-bottom: 10px;
        line-height: 1.4;
    }

    .flow-step p {
        font-size: 14px;
        line-height: 1.7;
        margin-bottom: 15px;
    }

    .flow-step-detail {
        font-size: 12px;
        padding: 8px 12px;
        margin: 0 auto;
        max-width: 100%;
    }

    .flow-step-detail i {
        font-size: 12px;
    }

    /* 機能（スマホ最適化） */
    .feature-detail {
        padding: 25px 20px;
        padding-top: 70px; /* Coming Soonバッジのスペースを確保 */
        margin-bottom: 25px;
    }

    .feature-badge {
        top: 12px;
        right: 12px;
        font-size: 10px;
        padding: 5px 10px;
        z-index: 10; /* 最前面に配置 */
    }

    .feature-spotlight {
        margin-top: 8px;
        margin-bottom: 15px;
        font-size: 12px;
        padding: 6px 14px;
    }

    .feature-detail-content,
    .feature-detail.reverse .feature-detail-content {
        flex-direction: column;
        gap: 20px;
    }

    /* スマホでは画像を常に下に配置 */
    .feature-detail.reverse .feature-detail-content {
        flex-direction: column-reverse;
    }

    .feature-detail-text h3 {
        font-size: 20px; /* 読みやすく調整 */
        line-height: 1.4;
        margin-bottom: 12px;
    }

    .feature-detail-text p {
        font-size: 14px; /* 読みやすく調整 */
        line-height: 1.7;
    }

    .feature-icon-large {
        width: 150px;
        height: 150px;
        font-size: 60px;
    }

    /* イラスト（レスポンシブ） */
    .hero-illustration {
        opacity: 0.2;
        height: 100%;
    }

    .hero-illustration img {
        object-fit: contain;
    }

    .feature-illustration {
        width: 150px;
        height: 150px;
    }

    .cta-illustration {
        max-width: 100%;
        margin-bottom: 30px;
    }

    /* 導入の流れ（スマホ修正） */
    .flow-steps {
        flex-direction: column;
        align-items: center; /* 中央揃え */
        gap: 20px;
    }

    .flow-step {
        max-width: 100%;
        width: 100%; /* 幅を100%に固定 */
        min-height: auto; /* 自動高さ */
        padding: 50px 20px 25px; /* 上部パディングを増やしてSTEPバッジのスペース確保 */
        margin: 0; /* マージンをリセット */
        text-align: center; /* テキストを中央揃え */
        position: relative; /* バッジの基準点 */
    }

    .flow-step-number {
        position: absolute;
        top: -12px;
        left: 50%;
        transform: translateX(-50%); /* 中央揃え */
        font-size: 11px;
        padding: 6px 14px;
        white-space: nowrap; /* 改行させない */
    }

    .flow-step-number strong {
        font-size: 16px;
    }

    .flow-step-icon {
        width: 70px;
        height: 70px;
        font-size: 32px;
        margin: 15px auto 15px;
    }

    /* フォーム（スマホ最適化） */
    .apply-form {
        padding: 25px 20px;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .form-group label {
        font-size: 14px;
        margin-bottom: 6px;
    }

    .form-group input,
    .form-group textarea,
    .form-group select {
        font-size: 15px;
        padding: 12px 15px;
    }

    .apply-header h2 {
        font-size: 26px; /* 読みやすく調整 */
        line-height: 1.4;
        margin-bottom: 12px;
    }

    .apply-header p {
        font-size: 14px;
        line-height: 1.7;
    }

    /* CTA（スマホ最適化） */
    .cta-content h2 {
        font-size: 24px; /* 読みやすく調整 */
        line-height: 1.4;
        margin-bottom: 15px;
    }

    .cta-content p {
        font-size: 14px;
        line-height: 1.7;
    }

    /* コラムセクション（スマホ） */
    .columns-info-box {
        flex-direction: column;
        padding: 20px;
        gap: 15px;
        margin: 20px 0 0;
    }

    .info-box-icon {
        width: 36px;
        height: 36px;
        font-size: 18px;
        border-radius: 8px;
        align-self: flex-start; /* 上部固定 */
    }

    .info-box-content h4 {
        font-size: 16px;
        margin: 0 0 12px 0;
        min-height: 36px; /* アイコンの高さと同じ */
    }

    .info-box-content p {
        font-size: 14px;
    }

    .columns-section-title {
        font-size: 20px;
        margin-bottom: 30px;
    }

    .columns-features-section,
    .columns-genres-section {
        padding: 35px 20px;
        margin-bottom: 40px;
    }

    .feature-cards {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .columns-genres {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

    .genre-card {
        padding: 20px 15px;
    }

    .genre-icon {
        width: 60px;
        height: 60px;
        font-size: 24px;
    }

    .genre-card h4 {
        font-size: 13px;
    }

    .columns-display-title {
        font-size: 24px;
    }

    .column-cards {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .column-title {
        font-size: 16px;
    }

    /* フッター */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .footer-links {
        flex-direction: column;
        gap: 10px;
    }

    /* ページトップボタン */
    .page-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 18px;
    }

    /* フローティングCTAボタン（スマホ） */
    .floating-cta {
        bottom: 20px;
        left: 20px;
        padding: 14px 20px;
        font-size: 14px;
        gap: 8px;
    }

    .floating-cta span {
        font-size: 14px;
    }

    .floating-cta i {
        font-size: 16px;
    }

    /* セクション内CTA（スマホ） */
    .section-cta {
        padding: 35px 20px;
        margin-top: 40px;
    }

    .section-cta-text {
        font-size: 17px;
        margin-bottom: 20px;
    }
}

@media (max-width: 480px) {
    .hero-title-wrapper {
        gap: 10px;
    }

    .hero-title {
        font-size: 24px;
    }

    .multiply-symbol {
        font-size: 40px;
    }

    .hero-subtitle {
        font-size: 20px;
    }

    /* システムプレビュー */
    .system-preview {
        padding: 60px 0;
    }

    .preview-header h2 {
        font-size: 28px;
    }

    .preview-header p {
        font-size: 15px;
    }

    .preview-system-card {
        padding: 25px;
    }

    .preview-system-card h3 {
        font-size: 24px;
    }

    .system-features li {
        font-size: 13px;
    }

    .preview-frame {
        padding: 6px;
    }

    .preview-frame-header {
        padding: 10px 15px;
    }

    .preview-frame-header.mobile {
        padding: 18px 15px 10px;
    }

    .frame-dot {
        width: 10px;
        height: 10px;
    }

    .mobile-notch {
        width: 80px;
        height: 16px;
    }

    .connector-icon {
        padding: 15px 25px;
    }

    .connector-icon i {
        font-size: 28px;
        margin-bottom: 6px;
    }

    .connector-icon span {
        font-size: 12px;
    }

    .connector-line {
        height: 50px;
    }

    .owner-frame {
        max-width: 120px;
        padding: 10px 6px;
    }

    .owner-frame::before {
        width: 50px;
        height: 16px;
        top: 14px;
    }

    .owner-frame::after {
        width: 6px;
        height: 6px;
        top: 19px;
    }

    .owner-frame .screenshot {
        max-height: 200px;
    }

    .biz-frame .screenshot {
        height: 180px;
        padding: 3px;
    }

    .biz-frame::before {
        width: 120px;
        bottom: -10px;
    }

    .biz-frame::after {
        width: 150px;
        bottom: -16px;
    }

    .benefit-card {
        padding: 25px 20px;
    }

    .benefit-card i {
        font-size: 32px;
    }

    .benefit-card h4 {
        font-size: 18px;
    }

    .section-title {
        font-size: 24px;
    }

    .btn {
        font-size: 14px;
        padding: 10px 20px;
    }

    .btn-large {
        font-size: 16px;
        padding: 14px 30px;
    }
}