:root {
    --bg-color: #ffffff;
    --text-main: #333333;
    --text-sub: #666666;
    --bg-gray: #f9fbfd;
    --accent-blue: #004e92;
    --accent-orange: #ff7f50;
    --line-color: #e0e0e0;
    
    --font-serif: 'Shippori Mincho', serif;
    --font-sans: 'Noto Sans JP', sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* Background Canvas */
#network-canvas {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: -1;
    opacity: 0.6;
}

/* Images Utility */
.responsive-img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
}
.shadow-md { box-shadow: 0 10px 30px rgba(0, 78, 146, 0.1); }
.shadow-lg { box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15); }

/* Header */
.site-header {
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    z-index: 100;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.logo {
    display: flex;
    align-items: center;
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: 0.05em;
    color: var(--accent-blue);
    text-decoration: none;
}
.logo img {
    height: 40px;
    width: auto;
    margin-right: 12px;
}

.nav-cta {
    background: var(--accent-blue);
    color: #fff;
    border: none;
    padding: 8px 24px;
    border-radius: 50px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: transform 0.2s;
}
.nav-cta:hover { transform: translateY(-2px); }

/* Common Layout */
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}
.narrow { max-width: 700px; margin-left: auto; margin-right: auto; }
section { padding: 100px 0; }
.bg-gray { background-color: var(--bg-gray); }

/* Typography */
h1, h2, h3 {
    font-family: var(--font-serif);
    font-weight: 600;
}
p {
    margin-bottom: 1.5em;
    color: var(--text-sub);
}
.center-text { text-align: center; }
strong {
    color: var(--text-main);
    background: linear-gradient(transparent 60%, rgba(0, 78, 146, 0.1) 60%);
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 120px;
    padding-bottom: 60px;
}
.hero-container {
    width: 100%;
    max-width: 800px;
}
.eyebrow {
    font-size: 0.9rem;
    letter-spacing: 0.1em;
    color: var(--accent-blue);
    margin-bottom: 15px;
    font-weight: bold;
}
.main-title {
    font-size: 2.8rem;
    line-height: 1.4;
    margin-bottom: 20px;
    color: var(--text-main);
}
.sub-title {
    font-size: 1.1rem;
    color: var(--text-sub);
    margin-bottom: 40px;
}
.hero-image-wrapper {
    margin: 0 auto 40px;
    border-radius: 12px;
    overflow: hidden;
}
.scroll-hint {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 0.8rem;
    color: var(--accent-blue);
    opacity: 0.7;
}
.scroll-hint .line {
    width: 1px;
    height: 40px;
    background: var(--accent-blue);
    margin-top: 10px;
}

/* Section Header */
.section-header { margin-bottom: 50px; }
.section-header.center { text-align: center; }
.step-num {
    display: block;
    font-family: var(--font-sans);
    font-weight: bold;
    color: var(--accent-orange);
    font-size: 0.8rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 15px;
}
.section-header h2 { font-size: 2.2rem; line-height: 1.4; }

/* Split Layout */
.split-layout {
    display: flex;
    gap: 60px;
    align-items: center;
}
.split-text { flex: 1; }
.split-image { flex: 1; }

.label {
    display: inline-block;
    background: #edf5ff;
    color: var(--accent-blue);
    font-size: 0.8rem;
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 15px;
    font-weight: bold;
}
.split-text h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    line-height: 1.4;
}

/* Unlearn List */
.clean-list { list-style: none; margin-top: 30px; }
.clean-list li {
    margin-bottom: 15px;
    padding-left: 20px;
    border-left: 3px solid var(--accent-blue);
}
.clean-list strong {
    display: block;
    font-size: 1.1rem;
    margin-bottom: 5px;
    background: none;
    color: var(--accent-blue);
}
.highlight-text {
    background: #f0f7ff;
    padding: 20px;
    border-radius: 8px;
    font-size: 0.95rem;
    color: var(--accent-blue);
    font-weight: 500;
    margin-top: 30px;
}

/* Timeline */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 60px auto 0;
}
.timeline::before {
    content: '';
    position: absolute;
    top: 0; left: 100px;
    width: 1px;
    height: 100%;
    background: var(--line-color);
}
.timeline-item {
    display: flex;
    margin-bottom: 50px;
    position: relative;
}
.date {
    width: 100px;
    text-align: right;
    padding-right: 30px;
    font-weight: bold;
    color: var(--accent-blue);
}
.content {
    flex: 1;
    padding-left: 30px;
}
.content h3 {
    font-size: 1.3rem;
    margin-bottom: 5px;
    color: var(--text-main);
}
.theme {
    color: var(--accent-orange);
    font-weight: bold;
    font-size: 0.9rem;
    margin-bottom: 10px;
}
.desc { font-size: 0.95rem; }

/* Representative Message Styles */
.message-heading {
    margin-top: 50px;
    margin-bottom: 20px;
    font-size: 1.3rem;
    color: var(--accent-blue);
    border-bottom: 1px solid var(--line-color);
    padding-bottom: 10px;
}
.message-heading:first-of-type {
    margin-top: 0;
}
.representative-sign {
    margin-top: 40px;
    text-align: right;
}

/* Facilitator Section */
.facilitator-grid {
    display: flex;
    flex-direction: column;
    gap: 40px;
    max-width: 800px;
    margin: 0 auto;
}
.facilitator-card {
    display: flex;
    gap: 30px;
    background: #fff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.03);
    align-items: flex-start;
}
.facilitator-img {
    flex-shrink: 0;
    width: 120px;
    height: 120px;
}
.facilitator-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    border: 2px solid var(--accent-blue);
}
.facilitator-info h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
    color: var(--accent-blue);
}
.en-name {
    font-size: 0.9rem;
    color: var(--text-sub);
    font-weight: normal;
    margin-left: 10px;
}
.job-title {
    font-size: 0.9rem;
    font-weight: bold;
    margin-bottom: 15px;
    color: var(--text-main);
}
.bio {
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 0;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, #f9fbfd 0%, #edf5ff 100%);
}
.cta-title { margin-bottom: 20px; }
.entry-form {
    max-width: 600px;
    margin: 40px auto 0;
}
.form-row {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}
.form-row input {
    flex: 1;
    padding: 15px;
    border: 1px solid var(--line-color);
    border-radius: 4px;
    background: #fff;
}
.cta-button {
    background: var(--accent-blue);
    color: #fff;
    width: 100%;
    padding: 18px;
    border: none;
    border-radius: 4px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s;
}
.cta-button:hover { background: #003a70; }

/* Footer */
footer {
    text-align: center;
    padding: 40px;
    font-size: 0.8rem;
    color: var(--text-sub);
    border-top: 1px solid var(--line-color);
}

/* Animations */
.fade-up { opacity: 0; transform: translateY(30px); }
.soft-fade-in { opacity: 0; }

/* Responsive */
@media (max-width: 768px) {
    .hero-section { height: auto; padding: 120px 0 60px; }
    .main-title { font-size: 2rem; }
    .split-layout { flex-direction: column; gap: 30px; }
    .reverse-mobile { flex-direction: column-reverse; }
    
    .timeline::before { display: none; }
    .timeline-item { flex-direction: column; }
    .date { text-align: left; margin-bottom: 10px; width: 100%; }
    .content { padding-left: 0; border-left: 3px solid var(--line-color); padding-left: 15px; }
    
    .facilitator-card { flex-direction: column; text-align: center; align-items: center; }
    .facilitator-info h3 { display: flex; flex-direction: column; }
    .en-name { margin-left: 0; margin-top: 5px; }
    
    .form-row { flex-direction: column; }
}