/* Base Styles & Variables */
:root {
    --primary-color: #5b21b6;
    /* Indigo-800 */
    --primary-light: #7c3aed;
    /* Violet-600 */
    --accent-color: #06c755;
    /* LINE Green approx */
    --text-color: #1f2937;
    /* Gray-800 */
    --text-muted: #4b5563;
    /* Gray-600 */
    --bg-color: #ffffff;
    --bg-light: #f9fafb;
    /* Gray-50 */
    --bg-dark: #111827;
    /* Gray-900 */
    --border-color: #e5e7eb;
    /* Gray-200 */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --font-sans: 'Inter', 'Noto Sans JP', sans-serif;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-full: 9999px;
}

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

html,
body {
    font-family: var(--font-sans);
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--bg-color);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    width: 100%;
}

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

ul {
    list-style: none;
}

button {
    font-family: inherit;
    border: none;
    background: none;
    cursor: pointer;
}

/* Layout Utilities */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-muted);
}

/* Typography */
.hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    letter-spacing: -0.025em;
    background: linear-gradient(to right, var(--primary-color), var(--primary-light));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

h2 {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

p {
    margin-bottom: 1rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1.25rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all 0.2s;
    font-size: 0.9375rem;
}

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

.btn-primary:hover {
    background-color: var(--primary-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    border: 1px solid var(--border-color);
    background-color: white;
    color: var(--text-color);
}

.btn-outline:hover {
    border-color: var(--text-muted);
    background-color: var(--bg-light);
}

.btn-lg {
    padding: 0.875rem 2rem;
    font-size: 1.125rem;
    font-weight: 600;
}

.full-width {
    width: 100%;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 70px;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 50;
    display: flex;
    align-items: center;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-color);
}

.logo h1 {
    font-size: inherit;
    font-weight: inherit;
    margin: 0;
    color: inherit;
    line-height: inherit;
}

.logo img {
    width: 32px;
    height: 32px;
    border-radius: 6px;
}

.nav {
    display: none;
}

@media (min-width: 768px) {
    .nav {
        display: flex;
        gap: 2rem;
    }

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

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

@media (max-width: 768px) {
    .nav {
        /* Mobile nav handling, if any */
    }

    .hero {
        overflow: hidden;
    }

    .hero-visual {
        overflow: hidden;
    }

    .hero-visual-img {
        width: 90%;
        max-width: 90%;
    }
}

/* Hero Section */
.hero {
    padding-top: 140px;
    padding-bottom: 5rem;
    background: radial-gradient(circle at top right, rgba(124, 58, 237, 0.05), transparent 40%),
        radial-gradient(circle at bottom left, rgba(6, 199, 85, 0.05), transparent 40%);
    /* overflow: hidden; removed to fix PC clipping */
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
}

@media (min-width: 992px) {
    .hero .container {
        grid-template-columns: 1.2fr 0.8fr;
    }
}

.hero-content {
    max-width: 600px;
}

.hero-text {
    font-size: 1.125rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: rgba(91, 33, 182, 0.1);
    color: var(--primary-color);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: 1.5rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.hero-requirements {
    display: flex;
    gap: 1.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    flex-wrap: wrap;
}

.hero-requirements span {
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.hero-requirements i {
    width: 16px;
    height: 16px;
}

/* Hero Visual / Mockup */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    /* overflow: hidden; removed to fix PC clipping */
    padding: 2rem 0;
}

.hero-visual-img {
    width: 130%;
    max-width: none;
    height: auto;
    filter: drop-shadow(0 20px 20px rgba(0, 0, 0, 0.15));
    transform: perspective(1000px) rotateY(-5deg) rotateX(2deg);
    transition: transform 0.5s ease;
}

.hero-visual-img:hover {
    transform: perspective(1000px) rotateY(0) rotateX(0);
}

@media (max-width: 768px) {
    .hero-visual-img {
        width: 90%;
        max-width: 90%;
    }
}

/* Video Section */
.video-section {
    padding: 3rem 0;
    background-color: #ffffff;
}

.video-container {
    position: relative;
    width: 100%;
    /* 16:9 ratio */
    aspect-ratio: 16 / 9;
    max-width: 650px;
    margin: 0 auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Problem Section */
.problem {
    padding: 5rem 0;
    background-color: var(--bg-light);
}

.problem h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.problem-card {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: transform 0.2s;
}

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

.icon-box {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 24px;
}

.icon-box.warning {
    background-color: #fff7ed;
    color: #ea580c;
}

.icon-box.primary {
    background-color: #eff6ff;
    color: var(--primary-color);
}

/* Features Section */
.features {
    padding: 6rem 0;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
}

.feature-card {
    padding: 1.5rem;
}

.feature-card h3 {
    margin-bottom: 0.75rem;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Pricing Section */
.pricing {
    padding: 6rem 0;
    background-color: var(--bg-light);
}

.pricing-table {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.pricing-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    position: relative;
    display: flex;
    flex-direction: column;
}

.pricing-card.popular {
    transform: scale(1.05);
    border: 2px solid var(--primary-color);
    box-shadow: var(--shadow-lg);
    z-index: 10;
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
}

.card-header {
    text-align: center;
    margin-bottom: 2rem;
}

.price {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-color);
    margin: 0.5rem 0;
}

.period {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-muted);
}

.features-list {
    margin-bottom: 2.5rem;
    flex: 1;
}

.features-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 1rem;
    font-size: 0.95rem;
    color: var(--text-muted);
}

.features-list li i {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.features-list li i[data-lucide="check"] {
    color: var(--accent-color);
}

.features-list li i[data-lucide="x"] {
    color: #9ca3af;
}

.note {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: center;
    margin-top: 1rem;
}

@media (max-width: 768px) {
    .pricing-card.popular {
        transform: none;
    }
}

/* FAQ Section */
.faq {
    padding: 6rem 0;
}

.accordion {
    max-width: 800px;
    margin: 0 auto;
    border-top: 1px solid var(--border-color);
}

.accordion-item {
    border-bottom: 1px solid var(--border-color);
}

.accordion-header {
    width: 100%;
    padding: 1.5rem 0;
    text-align: left;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-color);
}

.accordion-header:hover {
    color: var(--primary-color);
}

.accordion-header i {
    transition: transform 0.3s;
}

.accordion-header.active i {
    transform: rotate(180deg);
}

.accordion-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    opacity: 0;
    transition: max-height 0.3s ease, opacity 0.3s ease;
}

.accordion-body.open {
    opacity: 1;
    padding-bottom: 1.5rem;
}

/* Footer */
.footer {
    background-color: var(--bg-dark);
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 700;
    font-size: 1.25rem;
}

.footer-logo img {
    width: 32px;
    height: 32px;
}

.footer-links a {
    color: #9ca3af;
    margin-left: 2rem;
}

.footer-links a:hover {
    color: white;
}

.copyright {
    text-align: center;
    color: #6b7280;
    font-size: 0.875rem;
    padding-top: 2rem;
    border-top: 1px solid #374151;
}

.sharethis-inline-share-buttons {
    margin-bottom: 2rem;
}