/* =========================================
   Reset & Base Styles
========================================= */
:root {
    --color-primary: #1E3A8A; /* Dark Blue */
    --color-primary-light: #3B82F6; /* Bright Blue */
    --color-primary-hover: #1e40af;
    --color-accent: #F59E0B; /* Amber/Orange for CTA */
    --color-accent-hover: #D97706;
    --color-bg-light: #F8FAFC;
    --color-bg-dark: #0F172A;
    --color-text: #334155;
    --color-text-light: #64748B;
    --color-white: #FFFFFF;
    --color-border: #E2E8F0;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-float: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-full: 9999px;
    
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--color-text);
    line-height: 1.6;
    background-color: var(--color-white);
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* =========================================
   Typography & Utilities
========================================= */
.text-center { text-align: center; }
.left-align { text-align: left !important; }
.text-white { color: var(--color-white) !important; }
.text-primary { color: var(--color-primary-light) !important; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-6 { margin-bottom: 2rem; }
.mb-8 { margin-bottom: 3rem; }
.mb-10 { margin-bottom: 4rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-8 { margin-top: 3rem; }
.mx-auto { margin-left: auto; margin-right: auto; }
.max-w-800 { max-width: 800px; }
.opacity-90 { opacity: 0.9; }
.bg-light { background-color: var(--color-bg-light); }
.bg-dark { background-color: var(--color-bg-dark); }
.bg-primary { background-color: var(--color-primary); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

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

.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--color-primary-light);
    border-radius: 2px;
}

.section-title.left-align::after {
    left: 0;
    transform: none;
}

.section-lead {
    font-size: 1.1rem;
    color: var(--color-text);
}

.placeholder-img {
    background: linear-gradient(135deg, #e2e8f0 0%, #cbd5e1 100%);
    border-radius: var(--radius-md);
    position: relative;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-light);
    font-size: 0.9rem;
    border: 1px dashed #94a3b8;
}

.placeholder-img::before {
    content: '画像配置予定 (' attr(alt) ')';
    position: absolute;
}

/* =========================================
   Buttons
========================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    transition: var(--transition);
    cursor: pointer;
    gap: 0.5rem;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-white);
    box-shadow: 0 4px 14px 0 rgba(245, 158, 11, 0.39);
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.4);
}

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

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

.btn-sm {
    display: inline-block;
    padding: 0.5rem 1.2rem;
    font-size: 0.9rem;
    font-weight: 700;
    background-color: var(--color-accent);
    color: var(--color-white);
    border-radius: var(--radius-full);
    transition: var(--transition);
}

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

/* =========================================
   Header
========================================= */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: var(--transition);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.logo {
    font-size: 1.2rem;
    font-weight: 900;
    color: var(--color-primary);
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text);
    transition: var(--transition);
}

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

@media (max-width: 768px) {
    .header-nav .nav-link {
        display: none;
    }
}

/* =========================================
   First View (Hero)
========================================= */
.hero {
    position: relative;
    padding: 120px 0 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #f0f4f8 0%, #ffffff 100%);
    overflow: hidden;
}

.hero-bg-circles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

.circle {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    z-index: 0;
}

.circle-1 {
    width: 500px;
    height: 500px;
    background-color: rgba(59, 130, 246, 0.15); /* Light Blue */
    top: -100px;
    right: -100px;
}

.circle-2 {
    width: 400px;
    height: 400px;
    background-color: rgba(245, 158, 11, 0.08); /* Accent */
    bottom: -50px;
    left: -100px;
}

.hero-container {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    gap: 40px;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-catch {
    display: inline-block;
    background-color: var(--color-primary);
    color: white;
    padding: 0.4rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.2;
    font-weight: 900;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
}

.hero-title .highlight {
    color: var(--color-primary-light);
}

.hero-sub {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.hero-desc {
    font-size: 1rem;
    color: var(--color-text-light);
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-image {
    flex: 1;
    position: relative;
    max-width: 500px;
}

.main-img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-float);
    aspect-ratio: 3/4;
}

.floating-cards {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 10;
}

.float-card {
    position: absolute;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(5px);
    padding: 0.8rem 1.5rem;
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(59, 130, 246, 0.2);
    animation: float 4s ease-in-out infinite;
}

.card-1 {
    top: 10%;
    left: -15%;
    animation-delay: 0s;
}

.card-2 {
    top: 40%;
    right: -10%;
    animation-delay: 1.5s;
}

.card-3 {
    bottom: 20%;
    left: -5%;
    animation-delay: 3s;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0px); }
}

@media (max-width: 992px) {
    .hero-container {
        flex-direction: column;
        text-align: center;
    }
    .hero-content {
        max-width: 100%;
    }
    .hero-buttons {
        justify-content: center;
    }
    .float-card {
        display: none; /* Hide on smaller screens to avoid clutter */
    }
}

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

.flex-layout {
    display: flex;
    align-items: center;
    gap: 40px;
}

.flex-content, .flex-image {
    flex: 1;
}

@media (max-width: 768px) {
    section {
        padding: 60px 0;
    }
    .flex-layout {
        flex-direction: column;
    }
}

/* =========================================
   Section 1: Problems
========================================= */
.problem-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 3rem;
}

.problem-card {
    background: var(--color-white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border-top: 4px solid var(--color-primary-light);
}

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

.problem-icon {
    font-size: 2rem;
    color: var(--color-primary-light);
    margin-bottom: 1rem;
}

.problem-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--color-primary);
}

.emphasis-box {
    background-color: var(--color-white);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    text-align: center;
    border: 2px dashed var(--color-accent);
    color: var(--color-primary);
    font-size: 1.2rem;
}

.emphasis-box strong {
    color: var(--color-accent);
}

/* =========================================
   Section 2: Solution
========================================= */
.solution-points {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 800px;
    margin: 3rem auto 0;
}

.point-item {
    display: flex;
    align-items: center;
    background: var(--color-bg-light);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    gap: 20px;
    transition: var(--transition);
}

.point-item:hover {
    transform: translateX(10px);
    background: white;
    box-shadow: var(--shadow-md);
}

.point-number {
    font-size: 3rem;
    font-weight: 900;
    color: rgba(59, 130, 246, 0.2);
    line-height: 1;
}

.point-content h3 {
    color: var(--color-primary);
    font-size: 1.3rem;
    margin-bottom: 0.3rem;
}

/* =========================================
   Section 3: Process
========================================= */
.timeline-horizontal {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 3rem;
}

.timeline-step {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: var(--radius-lg);
    position: relative;
}

.step-head {
    display: inline-block;
    background: var(--color-accent);
    color: white;
    padding: 0.2rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.timeline-step h3 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--color-white);
}

.timeline-step p {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.8);
}

@media (max-width: 992px) {
    .timeline-horizontal {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 576px) {
    .timeline-horizontal {
        grid-template-columns: 1fr;
    }
}

/* =========================================
   Section 4: Use Cases
========================================= */
.use-case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.use-case-card {
    text-align: center;
    padding: 2rem;
    border-radius: var(--radius-lg);
    background: var(--color-white);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.use-case-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.icon-wrap {
    width: 60px;
    height: 60px;
    background: var(--color-bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.5rem;
    color: var(--color-primary-light);
}

.use-case-card h3 {
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

/* =========================================
   Section 5: Effects
========================================= */
.check-list li {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.check-list li i {
    color: var(--color-primary-light);
}

.emphasis-text p {
    font-size: 1.3rem;
    color: var(--color-primary);
    border-left: 4px solid var(--color-accent);
    padding-left: 1rem;
}

.effects .placeholder-img {
    aspect-ratio: 16/9;
}

/* =========================================
   Section 6: Value
========================================= */
.keywords {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    margin-top: 2rem;
}

.keyword-tag {
    background: var(--color-primary-light);
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: 1.1rem;
    box-shadow: var(--shadow-sm);
}

/* =========================================
   Section 7: Profile
========================================= */
.profile-card {
    background: var(--color-white);
    padding: 3rem 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border-top: 4px solid var(--color-primary-light);
}

.profile-icon-top {
    font-size: 3rem;
    color: var(--color-primary-light);
    margin-bottom: 1rem;
}

.history-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.history-list.justify-center {
    justify-content: center;
}

.history-list li {
    background: var(--color-bg-light);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-primary);
    border: 1px solid var(--color-border);
}

/* =========================================
   Section 8: Summary
========================================= */
.feature-boxes {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 2rem;
}

.feature-box {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    flex: 1;
    max-width: 400px;
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--color-accent);
    margin-bottom: 1rem;
}

.feature-box h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.feature-box p {
    font-size: 0.95rem;
    opacity: 0.9;
}

.emphasis-box-white {
    display: inline-block;
    background: white;
    color: var(--color-primary);
    padding: 1rem 2rem;
    border-radius: var(--radius-full);
    font-size: 1.2rem;
    box-shadow: var(--shadow-md);
}

@media (max-width: 768px) {
    .feature-boxes {
        flex-direction: column;
        align-items: center;
    }
}

/* =========================================
   Section 9: Pricing
========================================= */
.pricing-cards {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 20px;
    flex-wrap: wrap;
}

.price-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 2.5rem 2rem;
    width: 320px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
    position: relative;
    transition: var(--transition);
}

.price-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.price-card.recommended {
    border: 2px solid var(--color-primary-light);
    transform: scale(1.05);
    transform-origin: top center;
    box-shadow: var(--shadow-lg);
    z-index: 10;
}

.price-card.recommended:hover {
    transform: scale(1.05) translateY(-5px);
}

.recommended-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-accent);
    color: white;
    padding: 0.3rem 1.5rem;
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: 0.9rem;
}

.plan-name {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-text-light);
    margin-bottom: 0.5rem;
}

.plan-title {
    font-size: 1.3rem;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
    min-height: 3rem;
}

.plan-price {
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 1.5rem;
}

.price-num {
    font-size: 2.5rem;
    font-weight: 900;
}

.price-unit {
    font-size: 0.9rem;
    font-weight: 500;
}

.plan-features li {
    font-size: 0.9rem;
    margin-bottom: 0.8rem;
    display: flex;
    gap: 10px;
    align-items: flex-start;
}

.plan-features li i {
    color: var(--color-primary-light);
    margin-top: 4px;
}

.slide-sample {
    max-width: 600px;
    aspect-ratio: 16/9;
}

@media (max-width: 992px) {
    .price-card.recommended {
        transform: none;
    }
    .price-card.recommended:hover {
        transform: translateY(-10px);
    }
}

/* =========================================
   Section 10: Flow
========================================= */
.timeline-vertical {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

.timeline-vertical::before {
    content: '';
    position: absolute;
    top: 0;
    left: 20px;
    height: 100%;
    width: 2px;
    background: var(--color-primary-light);
    opacity: 0.3;
}

.timeline-v-item {
    display: flex;
    gap: 20px;
    margin-bottom: 2rem;
    position: relative;
}

.v-step-num {
    width: 42px;
    height: 42px;
    background: var(--color-primary-light);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
    z-index: 1;
}

.v-step-content {
    background: white;
    padding: 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    flex: 1;
    border: 1px solid var(--color-border);
}

.v-step-content h3 {
    color: var(--color-primary);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

/* =========================================
   Section 11: FAQ
========================================= */
.accordion-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.accordion-item {
    margin-bottom: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    text-align: left;
    background: white;
    padding: 1.2rem 1.5rem;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-primary);
    border: none;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.accordion-header:hover {
    background: var(--color-bg-light);
}

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

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

.accordion-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    background: var(--color-bg-light);
}

.accordion-body p {
    padding: 1.5rem;
    border-top: 1px solid var(--color-border);
}

/* =========================================
   Section 12: Contact
========================================= */
.cta-box {
    background: white;
    padding: 3rem 2.5rem;
    border-radius: var(--radius-lg);
    color: var(--color-text);
    max-width: 640px;
    margin: 0 auto;
}

.cta-box h3 {
    color: var(--color-primary);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.cta-box p {
    color: var(--color-text-light);
    font-size: 1.05rem;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.btn-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    background-color: var(--color-accent);
    color: white;
    font-size: 1.15rem;
    font-weight: 700;
    padding: 1rem 2.5rem;
    border-radius: var(--radius-full);
    transition: var(--transition);
    box-shadow: 0 4px 14px 0 rgba(245, 158, 11, 0.4);
}

.btn-cta:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(245, 158, 11, 0.45);
}

/* =========================================
   Footer
========================================= */
.footer {
    background: var(--color-bg-dark);
    color: var(--color-text-light);
    padding: 2rem 0;
    font-size: 0.9rem;
}