/* =========================================
   Variables & Reset
   ========================================= */
:root {
    --color-primary: #0A192F; /* Deep Blue */
    --color-secondary: #00E5FF; /* Cyan/Turquoise */
    --color-accent: #FF6B00; /* Orange CTA */
    --color-bg-light: #F3F4F6; /* Light Gray */
    --color-text: #333333;
    --color-text-light: #666666;
    --color-white: #FFFFFF;
    
    --font-main: 'Noto Sans JP', sans-serif;
    
    --box-shadow: 0 10px 30px rgba(10, 25, 47, 0.08);
    --box-shadow-hover: 0 15px 40px rgba(10, 25, 47, 0.15);
    
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

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

ul {
    list-style: none;
}

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

/* =========================================
   Typography & Utilities
   ========================================= */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.text-center { text-align: center; }
.mb-5 { margin-bottom: 3rem; }

.section-subtitle {
    display: inline-block;
    color: var(--color-secondary);
    font-weight: 700;
    font-size: 0.875rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: 2.25rem;
    font-weight: 900;
    color: var(--color-primary);
    line-height: 1.4;
    margin-bottom: 1.5rem;
}

.section-lead {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 800px;
    margin: 0 auto;
}

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

section {
    padding: 100px 0;
}

.br-pc { display: block; }
.br-sp { display: none; }

@media (max-width: 768px) {
    .br-pc { display: none; }
    .br-sp { display: block; }
    .section-title { font-size: 1.75rem; }
}

/* =========================================
   Buttons
   ========================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    border-radius: 50px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-white);
    padding: 12px 28px;
    font-size: 1rem;
    box-shadow: 0 4px 15px rgba(255, 107, 0, 0.3);
}

.btn-primary:hover {
    background-color: #E66000;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 0, 0.4);
}

.btn-large {
    padding: 16px 40px;
    font-size: 1.125rem;
}

/* =========================================
   Header
   ========================================= */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.header-logo {
    height: 40px;
    object-fit: contain;
}

.header-nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav-list {
    display: flex;
    gap: 40px;
    font-weight: 700;
}

.nav-list a {
    color: var(--color-primary);
    position: relative;
    padding-bottom: 4px;
    transition: color 0.3s ease;
}

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

.nav-list a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--color-secondary);
    transition: width 0.3s ease;
}

.nav-list a:hover::after {
    width: 100%;
}

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

/* =========================================
   Hero Section
   ========================================= */
.hero {
    padding: 160px 0 100px;
    background-image: linear-gradient(rgba(5, 13, 26, 0.8), rgba(5, 13, 26, 0.8)), url('../images/hero-graphic.svg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    position: relative;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background-color: #050d1a;
}

/* Decorative background element */
.hero::before {
    content: none;
}

.hero-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    position: relative;
    z-index: 1;
    text-align: center;
}

.hero-content {
    flex: 1;
    max-width: 900px;
}

.hero-title {
    font-size: 3.25rem;
    font-weight: 900;
    color: var(--color-white);
    line-height: 1.4;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
    text-shadow: 0 4px 20px rgba(0,0,0,0.5);
}

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

.hero-lead {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 3rem;
    font-weight: 500;
    text-shadow: 0 2px 10px rgba(0,0,0,0.8);
}

.hero-image {
    flex: 1;
    position: relative;
}

.hero-image img {
    border-radius: 16px;
    box-shadow: 0 20px 50px rgba(10, 25, 47, 0.1);
    transform: perspective(1000px) rotateY(-5deg);
    transition: var(--transition);
}

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

@media (max-width: 992px) {
    .hero-container {
        flex-direction: column;
        text-align: center;
    }
    .hero-content {
        max-width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    .hero-title { font-size: 2.25rem; }
    .hero-image img { transform: none; }
}

/* =========================================
   Issues Section
   ========================================= */
.issues-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 3rem;
}

.issue-card {
    background: var(--color-white);
    border-radius: 16px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border-top: 4px solid var(--color-secondary);
}

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

.card-icon-wrapper {
    width: 100px;
    height: 100px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

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

@media (max-width: 768px) {
    .issues-grid { grid-template-columns: 1fr; }
}

/* =========================================
   What We Do Section
   ========================================= */
.infographic-wrapper {
    max-width: 1000px;
    margin: 0 auto;
    background: var(--color-white);
    border-radius: 20px;
    padding: 24px;
    box-shadow: var(--box-shadow);
    border: 1px solid rgba(0,0,0,0.05);
}

.infographic-img {
    width: 100%;
    border-radius: 12px;
}

/* =========================================
   Comparison Section
   ========================================= */
.table-responsive {
    overflow-x: auto;
    background: var(--color-white);
    border-radius: 16px;
    box-shadow: var(--box-shadow);
    padding: 2px;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 700px;
}

.comparison-table th, 
.comparison-table td {
    padding: 24px 20px;
    text-align: center;
    border-bottom: 1px solid #E5E7EB;
}

.comparison-table th {
    background-color: var(--color-primary);
    color: var(--color-white);
    font-weight: 700;
    font-size: 1.1rem;
}

.comparison-table th:first-child {
    border-top-left-radius: 14px;
}
.comparison-table th:last-child {
    border-top-right-radius: 14px;
}

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

.comparison-table td:first-child {
    font-weight: 700;
    color: var(--color-primary);
    text-align: left;
    background-color: rgba(10, 25, 47, 0.02);
}

.highlight-col {
    background-color: rgba(0, 229, 255, 0.05);
    position: relative;
}

.comparison-table th.highlight-col {
    background-color: var(--color-secondary);
    color: var(--color-primary);
}

.mark {
    font-size: 1.75rem;
    font-weight: 900;
    line-height: 1;
    display: block;
    margin-bottom: 0.25rem;
}

.triangle { color: #F59E0B; }
.circle { color: #3B82F6; }
.cross { color: #EF4444; }
.double-circle { color: var(--color-secondary); font-size: 2rem; }

.note {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

/* =========================================
   Flow Section
   ========================================= */
.flow-steps {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 900px;
    margin: 0 auto;
}

.step-item {
    display: flex;
    align-items: stretch;
}

.step-number {
    font-size: 3rem;
    font-weight: 900;
    color: var(--color-bg-light);
    -webkit-text-stroke: 1px var(--color-primary);
    width: 100px;
    display: flex;
    align-items: flex-start;
    padding-top: 10px;
    flex-shrink: 0;
}

.step-card {
    background: var(--color-white);
    border-radius: 16px;
    padding: 30px;
    display: flex;
    align-items: center;
    gap: 30px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.04);
    flex: 1;
    border-left: 4px solid var(--color-secondary);
    transition: var(--transition);
}

.step-card:hover {
    box-shadow: var(--box-shadow);
    transform: translateX(5px);
}

.step-icon {
    width: 80px;
    height: 80px;
    flex-shrink: 0;
}

.step-content h3 {
    font-size: 1.25rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

@media (max-width: 640px) {
    .step-item { flex-direction: column; }
    .step-number { width: 100%; padding-top: 0; margin-bottom: -20px; margin-left: 10px; z-index: 1;}
    .step-card { flex-direction: column; text-align: center; }
}

/* =========================================
   System & Education
   ========================================= */
.grid-2-cols {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.feature-box {
    background: var(--color-white);
    border-radius: 16px;
    padding: 40px;
    box-shadow: var(--box-shadow);
}

.feature-tag {
    display: inline-block;
    background: rgba(10, 25, 47, 0.05);
    color: var(--color-primary);
    padding: 6px 16px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 0.85rem;
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
}

.feature-title {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
}

.check-list {
    margin-top: 1.5rem;
}

.check-list li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 0.75rem;
    color: var(--color-text);
}

.check-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--color-secondary);
    font-weight: 900;
}

.support-team {
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 16px;
    padding: 40px;
    text-align: center;
}

.support-title {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--color-secondary);
}

.support-list {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.support-item {
    flex: 1;
    min-width: 200px;
    background: rgba(255,255,255,0.05);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid rgba(255,255,255,0.1);
}

.support-item h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--color-white);
}

.support-item p {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.7);
}

@media (max-width: 768px) {
    .grid-2-cols { grid-template-columns: 1fr; }
}

/* =========================================
   Schedule
   ========================================= */
.timeline-ui {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline-track {
    position: absolute;
    left: 120px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #E5E7EB;
}

.timeline-row {
    position: relative;
    display: flex;
    margin-bottom: 30px;
    padding-left: 150px;
}

.time-label {
    position: absolute;
    left: 0;
    top: 20px;
    width: 100px;
    text-align: right;
    font-weight: 700;
    color: var(--color-primary);
}

.timeline-row::before {
    content: '';
    position: absolute;
    left: 115px;
    top: 24px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-secondary);
    border: 3px solid var(--color-white);
    box-shadow: 0 0 0 2px var(--color-secondary);
    z-index: 2;
}

.timeline-content {
    background: var(--color-white);
    border-radius: 12px;
    padding: 20px;
    width: 100%;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    border-left: 4px solid var(--color-primary);
}

.timeline-content.box-blue { border-left-color: var(--color-primary); }
.timeline-content.box-cyan { border-left-color: var(--color-secondary); }
.timeline-content.box-gray { border-left-color: #9CA3AF; }

.timeline-content h4 {
    font-size: 1.1rem;
    color: var(--color-primary);
    margin-bottom: 0.25rem;
}

.timeline-content p {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

.row-contract .timeline-divider {
    width: 100%;
    border-top: 2px dashed #D1D5DB;
    position: relative;
    margin: 20px 0;
}

.row-contract .timeline-divider span {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-white);
    padding: 0 15px;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-text-light);
}

.row-contract::before { display: none; }

.timeline-multi {
    display: flex;
    flex-direction: column;
    gap: 15px;
    width: 100%;
}

@media (max-width: 640px) {
    .timeline-track { left: 20px; }
    .timeline-row { padding-left: 50px; flex-direction: column; }
    .time-label { position: static; text-align: left; margin-bottom: 10px; width: 100%; color: var(--color-secondary); }
    .timeline-row::before { left: 15px; top: 40px; }
}

/* =========================================
   CTA Section
   ========================================= */
.cta-section {
    background-color: var(--color-primary);
    background-image: radial-gradient(circle at center, rgba(0, 229, 255, 0.1) 0%, transparent 70%);
    color: var(--color-white);
    padding: 120px 0;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--color-white);
    line-height: 1.4;
    margin-bottom: 2.5rem;
}

@media (max-width: 768px) {
    .cta-title { font-size: 1.75rem; }
}

/* =========================================
   Footer
   ========================================= */
.footer {
    background-color: #050d1a;
    padding: 40px 0;
    color: rgba(255,255,255,0.5);
}

.footer-logo img {
    height: 30px;
    margin: 0 auto 1rem;
    opacity: 1; /* removed invert filter since SVG is white */
}

.copyright {
    font-size: 0.85rem;
}

/* =========================================
   Hero Graphic Animation
   ========================================= */
.floating-hero {
    animation: floating 6s ease-in-out infinite;
    max-width: 100%;
}

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

/* =========================================
   Custom Infographic (HTML Based)
   ========================================= */
.html-infographic {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 20px;
    padding: 40px;
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    font-family: var(--font-main);
}

.info-track {
    background: #fff;
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
}

.tech-track {
    border-top: 4px solid var(--color-primary);
    margin-bottom: 50px;
}

.edu-track {
    border-top: 4px solid var(--color-secondary);
    margin-bottom: 50px;
}

.track-title {
    font-size: 1.25rem;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.track-title span {
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--color-text-light);
}

.info-steps-flex {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.info-box {
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 12px 20px;
    text-align: center;
    font-weight: 700;
    color: var(--color-primary);
    min-width: 140px;
}

.info-box small {
    display: block;
    font-size: 0.8rem;
    font-weight: 400;
    color: var(--color-text-light);
    margin-top: 4px;
}

.info-arrow {
    color: #cbd5e1;
    font-size: 1.5rem;
}

.highlight-box {
    background: rgba(0, 229, 255, 0.1);
    border-color: var(--color-secondary);
}

.info-sync-center {
    position: absolute;
    top: 50%;
    left: 10%;
    right: 10%;
    transform: translateY(-50%);
    text-align: center;
    z-index: 10;
}

.sync-line {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 2px;
    background: repeating-linear-gradient(90deg, #cbd5e1, #cbd5e1 6px, transparent 6px, transparent 12px);
    z-index: -1;
}

.sync-badge {
    display: inline-block;
    background: var(--color-white);
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
    padding: 8px 24px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 0.9rem;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

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

.goal-arrow {
    color: var(--color-secondary);
    font-size: 2rem;
    margin: -30px 0 10px;
}

.goal-box {
    display: inline-block;
    background: var(--color-primary);
    color: var(--color-white);
    padding: 16px 40px;
    border-radius: 12px;
    font-size: 1.25rem;
    font-weight: 700;
    box-shadow: 0 10px 20px rgba(10,25,47,0.1);
}

.goal-box small {
    display: block;
    font-size: 0.9rem;
    font-weight: 400;
    color: rgba(255,255,255,0.8);
    margin-top: 4px;
}

@media (max-width: 768px) {
    .info-steps-flex {
        flex-direction: column;
        gap: 10px;
    }
    .info-arrow { transform: rotate(90deg); }
    .sync-line { display: none; }
    .info-sync-center { position: relative; transform: none; margin: 20px 0; }
}

/* =========================================
   Contact Form
   ========================================= */
.cta-lead {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.8);
    margin-bottom: 2rem;
}

.contact-form-wrapper {
    max-width: 600px;
    margin: 0 auto;
    background: var(--color-white);
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
    text-align: left;
    color: var(--color-text);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-primary);
    font-size: 0.95rem;
}

.required {
    background: #EF4444;
    color: white;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 4px;
    margin-left: 8px;
    vertical-align: middle;
}

.optional {
    background: #9CA3AF;
    color: white;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 4px;
    margin-left: 8px;
    vertical-align: middle;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #D1D5DB;
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.2);
}

.form-submit {
    margin-top: 32px;
}

/* =========================================
   Modal Styles
   ========================================= */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(5, 13, 26, 0.8);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: var(--color-white);
    padding: 3rem 2rem;
    border-radius: 16px;
    border: 1px solid var(--color-bg-light);
    max-width: 450px;
    width: 90%;
    box-shadow: 0 20px 50px rgba(0,0,0,0.3);
    animation: modalFadeIn 0.3s ease forwards;
}

.modal-icon {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

@keyframes modalFadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}