/* CSS Variables */
:root {
    --primary: #667eea;
    --secondary: #764ba2;
    --accent: #f093fb;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --text: #1e293b;
    --text-light: #64748b;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
    background: var(--bg-white);
}

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, .98);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, .08);
    padding: 1rem 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all .3s;
}

.navbar-brand {
    font-size: 1.4rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-link {
    color: var(--text);
    font-weight: 500;
    margin: 0 .5rem;
    transition: color .3s;
    position: relative;
}

.nav-link:hover {
    color: var(--primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 80%;
    height: 2px;
    background: var(--primary);
    transition: transform .3s;
}

.nav-link:hover::after {
    transform: translateX(-50%) scaleX(1);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 180px 20px 120px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    animation: bgMove 30s linear infinite;
}

@keyframes bgMove {
    0% { background-position: 0 0; }
    100% { background-position: 60px 60px; }
}

.hero-content {
    position: relative;
    z-index: 1;
    animation: fadeInUp 1s ease;
}

.hero h1 {
    font-size: 4.5rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    text-shadow: 0 4px 20px rgba(0, 0, 0, .3);
    line-height: 1.2;
}

.hero h1 .highlight {
    display: block;
    background: linear-gradient(90deg, #fff, rgba(255, 255, 255, .8));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 5rem;
}

.hero .lead {
    font-size: 1.5rem;
    margin-bottom: 3rem;
    opacity: .95;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 0 2px 10px rgba(0, 0, 0, .2);
    font-weight: 300;
}

/* Buttons */
.btn-hero {
    padding: 1.3rem 3.5rem;
    font-size: 1.2rem;
    font-weight: 700;
    border-radius: 50px;
    margin: .5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .3);
    transition: all .3s;
    text-decoration: none;
    display: inline-block;
    border: none;
}

.btn-hero:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 20px 50px rgba(0, 0, 0, .4);
}

.btn-primary-hero {
    background: #fff;
    color: var(--primary);
}

.btn-outline-hero {
    background: transparent;
    color: #fff;
    border: 3px solid #fff;
}

.btn-outline-hero:hover {
    background: rgba(255, 255, 255, .15);
}

/* Stats Section */
.stats-section {
    padding: 100px 20px;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: #fff;
    position: relative;
}

.stat-card {
    text-align: center;
    padding: 2.5rem;
    animation: fadeInUp .8s ease;
    animation-fill-mode: both;
}

.stat-card:nth-child(1) { animation-delay: .1s; }
.stat-card:nth-child(2) { animation-delay: .2s; }
.stat-card:nth-child(3) { animation-delay: .3s; }
.stat-card:nth-child(4) { animation-delay: .4s; }

.stat-number {
    font-size: 4.5rem;
    font-weight: 900;
    margin-bottom: .8rem;
    text-shadow: 0 4px 15px rgba(0, 0, 0, .3);
    background: linear-gradient(90deg, #fff, rgba(255, 255, 255, .8));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 1.2rem;
    opacity: .9;
    font-weight: 300;
}

/* Sections */
.section {
    padding: 120px 20px;
}

.section-alt {
    background: var(--bg-light);
}

.section-title {
    text-align: center;
    margin-bottom: 5rem;
    animation: fadeInUp .8s ease;
}

.section-title h2 {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.3;
}

.section-title .subtitle {
    font-size: 1.4rem;
    color: var(--text-light);
    max-width: 800px;
    margin: 0 auto;
    font-weight: 300;
}

/* Feature Cards */
.feature-card {
    background: #fff;
    border-radius: 30px;
    padding: 3.5rem;
    margin-bottom: 2.5rem;
    box-shadow: 0 15px 50px rgba(0, 0, 0, .08);
    transition: all .4s;
    border: 1px solid rgba(0, 0, 0, .03);
    position: relative;
    overflow: hidden;
    height: 100%;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transition: transform .4s;
    transform-origin: left;
}

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

.feature-card:hover {
    transform: translateY(-15px);
    box-shadow: 0 25px 70px rgba(0, 0, 0, .12);
}

.feature-icon {
    width: 100px;
    height: 100px;
    border-radius: 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
    font-size: 3rem;
    color: #fff;
    position: relative;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .2);
}

.icon-gradient-1 { background: linear-gradient(135deg, #667eea, #764ba2); }
.icon-gradient-2 { background: linear-gradient(135deg, #f093fb, #f5576c); }
.icon-gradient-3 { background: linear-gradient(135deg, #4facfe, #00f2fe); }
.icon-gradient-4 { background: linear-gradient(135deg, #43e97b, #38f9d7); }
.icon-gradient-5 { background: linear-gradient(135deg, #fa709a, #fee140); }
.icon-gradient-6 { background: linear-gradient(135deg, #30cfd0, #330867); }

.feature-card h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text);
}

.feature-card .feature-list {
    list-style: none;
    padding: 0;
    margin-top: 1.5rem;
}

.feature-card .feature-list li {
    padding: .8rem 0;
    color: var(--text-light);
    font-size: 1.05rem;
    border-bottom: 1px solid rgba(0, 0, 0, .05);
    display: flex;
    align-items: start;
}

.feature-card .feature-list li:last-child {
    border-bottom: none;
}

.feature-card .feature-list li i {
    color: var(--success);
    margin-right: 1rem;
    margin-top: .3rem;
    font-size: 1.1rem;
}

/* Benefit Section */
.benefit-section {
    background: #fff;
}

.benefit-card {
    background: var(--bg-light);
    border-radius: 25px;
    padding: 3rem;
    margin-bottom: 2rem;
    transition: all .3s;
    border: 2px solid transparent;
}

.benefit-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, .15);
}

.benefit-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 2.2rem;
    margin-bottom: 2rem;
    box-shadow: 0 10px 30px rgba(102, 126, 234, .3);
}

.benefit-card h4 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 1.2rem;
    color: var(--text);
}

.benefit-card p {
    color: var(--text-light);
    line-height: 1.9;
    font-size: 1.05rem;
}

/* Comparison Table */
.comparison-table {
    background: #fff;
    border-radius: 25px;
    overflow: hidden;
    box-shadow: 0 15px 50px rgba(0, 0, 0, .1);
}

.comparison-table table {
    width: 100%;
    margin: 0;
}

.comparison-table th {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    padding: 1.5rem;
    font-weight: 700;
    font-size: 1.1rem;
    text-align: center;
}

.comparison-table td {
    padding: 1.5rem;
    text-align: center;
    border-bottom: 1px solid rgba(0, 0, 0, .05);
    font-size: 1.05rem;
}

.comparison-table tr:last-child td {
    border-bottom: none;
}

.comparison-table .highlight {
    background: rgba(102, 126, 234, .05);
    font-weight: 600;
    color: var(--primary);
}

.comparison-table .check {
    color: var(--success);
    font-size: 1.5rem;
}

.comparison-table .times {
    color: var(--danger);
    font-size: 1.5rem;
}

/* ROI Cards */
.roi-card {
    background: #fff;
    border-radius: 25px;
    padding: 3rem;
    box-shadow: 0 15px 50px rgba(0, 0, 0, .1);
    margin-bottom: 2rem;
    border-left: 6px solid var(--success);
}

.roi-card h4 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text);
    display: flex;
    align-items: center;
}

.roi-card h4 i {
    margin-right: 1rem;
    color: var(--success);
    font-size: 2rem;
}

.roi-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, .05);
}

.roi-item:last-child {
    border-bottom: none;
}

.roi-label {
    font-size: 1.1rem;
    color: var(--text-light);
}

.roi-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--success);
}

/* CTA Section */
.cta-section {
    padding: 120px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M50 50c0-5.523 4.477-10 10-10s10 4.477 10 10-4.477 10-10 10c0 5.523-4.477 10-10 10s-10-4.477-10-10 4.477-10 10-10zM10 10c0-5.523 4.477-10 10-10s10 4.477 10 10-4.477 10-10 10c0 5.523-4.477 10-10 10S0 25.523 0 20s4.477-10 10-10zm10 8c4.418 0 8-3.582 8-8s-3.582-8-8-8-8 3.582-8 8 3.582 8 8 8zm40 40c4.418 0 8-3.582 8-8s-3.582-8-8-8-8 3.582-8 8 3.582 8 8 8z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

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

.cta-section h2 {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 2rem;
}

.cta-section p {
    font-size: 1.5rem;
    margin-bottom: 3rem;
    opacity: .95;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* Footer */
.footer {
    background: #1e293b;
    color: #fff;
    padding: 80px 20px 40px;
}

.footer h5 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: #fff;
}

.footer ul {
    list-style: none;
    padding: 0;
}

.footer ul li {
    margin-bottom: 1rem;
}

.footer ul li a {
    color: rgba(255, 255, 255, .7);
    text-decoration: none;
    transition: color .3s;
    font-size: 1.05rem;
}

.footer ul li a:hover {
    color: #fff;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .1);
    margin-top: 4rem;
    padding-top: 2rem;
    text-align: center;
    color: rgba(255, 255, 255, .6);
}

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

.fade-in {
    opacity: 0;
    animation: fadeInUp .8s ease forwards;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.8rem;
    }
    
    .hero h1 .highlight {
        font-size: 3.2rem;
    }
    
    .hero .lead {
        font-size: 1.2rem;
    }
    
    .section-title h2 {
        font-size: 2.2rem;
    }
    
    .stat-number {
        font-size: 3rem;
    }
    
    .cta-section h2 {
        font-size: 2.5rem;
    }
    
    .feature-card {
        padding: 2.5rem;
    }
    
    .btn-hero {
        padding: 1rem 2.5rem;
        font-size: 1.1rem;
    }
}