/* Global Styles */
:root {
    --primary-color: #4ECDC4;
    /* Soft Teal/Mint */
    --primary-dark: #3dbcb4;
    --accent-color: #FFB74D;
    /* Warm Orange/Yellow */
    --accent-dark: #f5a639;
    --text-color: #4a5568;
    /* Soft Gray */
    --light-bg: #f7f9fc;
    /* Very light blue-gray */
    --white: #ffffff;
    --border-radius: 16px;
    --shadow-soft: 0 10px 25px rgba(0, 0, 0, 0.05);
    --shadow-pulse: 0 0 0 0 rgba(78, 205, 196, 0.7);
    --font-heading: 'M PLUS Rounded 1c', sans-serif;
    --font-body: 'Noto Sans JP', sans-serif;
}

* {
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    background-color: var(--white);
}

a {
    transition: all 0.3s ease;
    text-decoration: none;
}

img {
    max-width: 100%;
}

.container {
    width: 90%;
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
}

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

.sp-only {
    display: none;
}

@media (max-width: 768px) {
    .sp-only {
        display: block;
    }
}

/* Typography */
h1,
h2,
h3 {
    font-family: var(--font-heading);
    font-weight: 700;
    margin-bottom: 0.5em;
    color: #2d3748;
}

.section-title {
    font-size: 2rem;
    margin-bottom: 2rem;
    position: relative;
    display: inline-block;
    padding-bottom: 10px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--primary-color);
    border-radius: 2px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: bold;
    cursor: pointer;
    border: none;
    text-align: center;
    font-family: var(--font-heading);
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(78, 205, 196, 0.3);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.2rem;
}

.btn-block {
    display: block;
    width: 100%;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.9rem;
    background-color: var(--accent-color);
    color: var(--white);
}

.btn-sm:hover {
    background-color: var(--accent-dark);
}

.shadow-pulse {
    animation: pulse-blue 2s infinite;
}

@keyframes pulse-blue {
    0% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(78, 205, 196, 0.7);
    }

    70% {
        transform: scale(1);
        box-shadow: 0 0 0 10px rgba(78, 205, 196, 0);
    }

    100% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(78, 205, 196, 0);
    }
}

/* Header */
.header {
    background-color: rgba(255, 255, 255, 0.95);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    backdrop-filter: blur(5px);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.nav a:not(.btn) {
    color: var(--text-color);
    font-weight: bold;
    font-size: 0.95rem;
}

.nav a:not(.btn):hover {
    color: var(--primary-color);
}

@media (max-width: 600px) {
    .nav a:not(.btn) {
        display: none;
    }
}

/* Hero Section */
.hero {
    padding-top: 120px;
    padding-bottom: 80px;
    background: linear-gradient(135deg, #e3fdfd 0%, #ffe6fa 100%);
    position: relative;
    overflow: hidden;
    text-align: center;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 2.5rem;
    line-height: 1.3;
    margin-bottom: 1.5rem;
    color: #2d3748;
}

.hero-title .highlight {
    color: var(--primary-color);
    position: relative;
    display: inline-block;
}

.hero-title .highlight::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 100%;
    height: 8px;
    background-color: rgba(255, 219, 133, 0.4);
    z-index: -1;
    transform: rotate(-1deg);
}

.hero-sub {
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
    color: #4a5568;
}

.hero-cta {
    margin-top: 2rem;
}

.hero-note {
    font-size: 0.8rem;
    margin-top: 1rem;
    color: #718096;
}

/* Sections */
.section {
    padding: 80px 0;
}

.bg-soft {
    background-color: var(--light-bg);
}

/* Problem Section */
.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.problem-card {
    background: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-soft);
    text-align: center;
    transition: transform 0.3s ease;
}

.problem-card:hover {
    transform: translateY(-5px);
}

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

.problem-conclusion {
    margin-top: 40px;
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--text-color);
}

/* Solution Section */
.steps {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 20px;
    flex-wrap: wrap;
    margin-top: 40px;
}

.step-item {
    flex: 1;
    min-width: 280px;
    background: var(--white);
    padding: 30px 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-soft);
    position: relative;
}

.step-num {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--white);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
    margin-bottom: 15px;
}

.step-detail {
    font-size: 0.85rem;
    color: #718096;
    margin-top: 10px;
    line-height: 1.5;
}

.step-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100px;
    font-size: 1.5rem;
    color: #cbd5e0;
}

@media (max-width: 768px) {
    .step-arrow {
        display: none;
    }

    .steps {
        flex-direction: column;
    }

    .step-item {
        width: 100%;
    }
}

.solution-benefit {
    margin-top: 50px;
    font-size: 1.2rem;
}

.marker {
    background: linear-gradient(transparent 60%, rgba(78, 205, 196, 0.3) 60%);
    font-weight: bold;
}

/* Features Section */
.feature-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 50px;
    margin-bottom: 60px;
}

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

.feature-text {
    flex: 1;
}

.feature-text h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.feature-icon {
    flex: 1;
    display: flex;
    justify-content: center;
    font-size: 8rem;
    color: #e2e8f0;
}

@media (max-width: 768px) {

    .feature-row,
    .feature-row.reverse {
        flex-direction: column-reverse;
        text-align: center;
        gap: 20px;
    }

    .feature-icon {
        font-size: 5rem;
        margin-bottom: 20px;
    }
}

/* Beta Notice */
.beta-notice {
    padding: 40px 0;
}

.notice-box {
    background-color: #fff9eb;
    border: 2px dashed #f6e05e;
    border-radius: var(--border-radius);
    padding: 30px;
}

.notice-box h3 {
    color: #d69e2e;
    display: flex;
    align-items: center;
    gap: 10px;
    justify-content: center;
}

.notice-list {
    list-style-type: disc;
    padding-left: 20px;
    margin: 20px auto 0;
    max-width: 600px;
    color: #744210;
}

/* Pricing Section */
.pricing-card {
    background: var(--white);
    max-width: 400px;
    margin: 40px auto 0;
    border-radius: var(--border-radius);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    border: 1px solid #e2e8f0;
}

.pricing-header {
    background-color: var(--primary-color);
    padding: 20px;
    color: var(--white);
}

.pricing-header h3 {
    margin: 0;
    color: var(--white);
    font-size: 1.2rem;
}

.pricing-body {
    padding: 40px 30px;
}

.price {
    margin-bottom: 20px;
    color: #2d3748;
}

.currency {
    font-size: 1.5rem;
    vertical-align: top;
}

.amount {
    font-size: 3.5rem;
    font-weight: bold;
    font-family: var(--font-heading);
}

.period {
    color: #718096;
}

.pricing-desc {
    margin-bottom: 30px;
    color: #4a5568;
}

.payment-methods {
    margin-top: 15px;
    font-size: 0.8rem;
    color: #a0aec0;
}

/* FAQ Section */
.faq-container {
    max-width: 800px;
    margin: 40px auto 0;
}

.faq-item {
    border-bottom: 1px solid #e2e8f0;
    margin-bottom: 10px;
}

.faq-question {
    padding: 20px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--white);
    border-radius: 8px;
    transition: background-color 0.2s;
}

.faq-question:hover {
    background-color: #f7fafc;
}

.faq-toggle {
    color: var(--primary-color);
    transition: transform 0.3s;
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    padding: 0 20px;
    background-color: var(--white);
}

.faq-item.active .faq-answer {
    padding-bottom: 20px;
}

/* Footer */
.footer {
    background-color: #2d3748;
    color: #e2e8f0;
    padding: 40px 0;
    font-size: 0.9rem;
}

/* Disclaimer */
.disclaimer {
    font-size: 0.8rem;
    color: #718096;
    background-color: #edf2f7;
    margin-bottom: 0;
}

.disclaimer-list {
    list-style-type: none;
    padding: 0;
    margin-top: 15px;
}

.disclaimer-list li {
    margin-bottom: 5px;
}