:root {
    --bg-dark: #0a0a0b;
    --bg-panel: #1a1a1d;
    --accent: #ff4757;
    --accent-hover: #ff6b81;
    --text: #e0e0e0;
    --text-dim: #a0a0a0;
    --border: rgba(255, 255, 255, 0.1);
    --glass: rgba(255, 255, 255, 0.05);
    --font-main: 'Inter', 'Noto Sans JP', sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-dark);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: opacity 0.2s;
}

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

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.lp-header {
    background: rgba(10, 10, 11, 0.8);
    backdrop-filter: blur(10px);
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid var(--border);
}

.logo {
    font-size: 1.2rem;
    font-weight: 700;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50px;
    font-weight: 700;
    text-align: center;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s, background-color 0.2s;
}

.btn-small {
    background: var(--glass);
    border: 1px solid var(--border);
    padding: 8px 20px;
    font-size: 0.9rem;
}

.btn-small:hover {
    background: rgba(255, 255, 255, 0.1);
}

.btn-primary {
    background: var(--accent);
    color: white;
    border: none;
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
}

.btn-large {
    padding: 15px 40px;
    font-size: 1.2rem;
    flex-direction: column;
    line-height: 1.2;
}

.btn-large .sub-text {
    font-size: 0.8rem;
    font-weight: 400;
    opacity: 0.9;
    margin-top: 4px;
}

.glow {
    box-shadow: 0 0 20px rgba(255, 71, 87, 0.5);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 20px rgba(255, 71, 87, 0.5);
    }

    50% {
        box-shadow: 0 0 30px rgba(255, 71, 87, 0.8);
    }

    100% {
        box-shadow: 0 0 20px rgba(255, 71, 87, 0.5);
    }
}

/* Hero Section */
.hero {
    padding: 150px 0 100px;
    text-align: center;
    background: radial-gradient(circle at center, #1a1a1d 0%, #0a0a0b 70%);
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-dim);
    margin-bottom: 40px;
}

.hero-image-container {
    margin: 40px auto;
    max-width: 800px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border);
}

/* Sections General */
section {
    padding: 80px 0;
    border-bottom: 1px solid var(--border);
}

section h2 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 40px;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.section-desc {
    text-align: center;
    color: var(--text-dim);
    margin-bottom: 50px;
    margin-top: -30px;
}

/* Problem Section */
.problem-list {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.problem-item {
    background: var(--bg-panel);
    padding: 30px;
    border-radius: 12px;
    width: 280px;
    text-align: center;
    border: 1px solid var(--border);
}

.problem-item .icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.solution-text {
    text-align: center;
    font-size: 1.2rem;
    font-weight: 700;
    line-height: 1.8;
    background: linear-gradient(to right, #fff, #a0a0a0);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Features Section */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--glass);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--border);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.08);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.feature-card h3 {
    margin-bottom: 10px;
    color: var(--accent);
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--text-dim);
}

/* Comparison Section */
.comparison-table-wrapper {
    overflow-x: auto;
    margin-bottom: 30px;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
}

.comparison-table th,
.comparison-table td {
    padding: 15px;
    border-bottom: 1px solid var(--border);
    text-align: center;
}

.comparison-table th {
    background: var(--glass);
    color: var(--text-dim);
    font-weight: normal;
}

.comparison-table th.highlight {
    color: var(--accent);
    font-weight: bold;
    border-bottom: 2px solid var(--accent);
}

.comparison-table td.highlight {
    color: var(--accent);
    font-weight: bold;
    background: rgba(255, 71, 87, 0.05);
}

.conclusion {
    text-align: center;
    font-weight: 700;
    margin-top: 20px;
}

/* How to Section */
.steps {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.step {
    background: var(--bg-panel);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    width: 250px;
    position: relative;
    border: 1px solid var(--border);
}

.step-num {
    background: var(--accent);
    color: white;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin: 0 auto 15px;
}

.step-arrow {
    font-size: 2rem;
    color: var(--text-dim);
}

.simple-msg {
    text-align: center;
    font-size: 1.5rem;
    margin-top: 40px;
    font-weight: bold;
}

/* Concept Section */
.concept {
    background: radial-gradient(circle at center, #2a2a2d 0%, #0a0a0b 100%);
}

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

.concept p {
    margin-bottom: 20px;
    font-size: 1.1rem;
    color: var(--text-dim);
}

/* FAQ Section */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 30px;
    background: var(--glass);
    padding: 20px;
    border-radius: 8px;
}

.faq-item h3 {
    color: var(--text);
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.faq-item p {
    color: var(--text-dim);
    padding-left: 20px;
    border-left: 2px solid var(--accent);
}

/* CTA Section */
.cta {
    text-align: center;
    padding: 100px 0;
}

.cta p {
    margin-bottom: 40px;
    font-size: 1.2rem;
}

/* Footer */
.lp-footer {
    text-align: center;
    padding: 40px;
    background: var(--bg-panel);
    color: var(--text-dim);
    font-size: 0.8rem;
    border-top: 1px solid var(--border);
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.2rem;
    }

    .logo {
        font-size: 1rem;
    }

    .btn-large {
        width: 100%;
        max-width: 300px;
    }

    .problem-list {
        flex-direction: column;
        align-items: center;
    }

    .step-arrow {
        display: none;
    }

    .step {
        width: 100%;
        margin-bottom: 20px;
    }
}