/* ========================================
   ROUND NOTE - Public Overview Page
   Modern, Clean Design for Public Access
   ======================================== */

:root {
    /* ROUND NOTE Colors */
    --rn-primary: #ff8a00;
    --rn-primary-dark: #ff3c00;
    --rn-dark: #000000;
    --rn-dark-gray: #1a1a1a;
    --rn-gray: #333333;
    --rn-light-gray: #666666;
    --rn-border: #ddd;
    --rn-bg-light: #f8f9fa;
    --rn-white: #ffffff;
    
    /* Spacing */
    --rn-spacing-xs: 0.5rem;
    --rn-spacing-sm: 1rem;
    --rn-spacing-md: 2rem;
    --rn-spacing-lg: 3rem;
    --rn-spacing-xl: 4rem;
    --rn-spacing-xxl: 6rem;
    
    /* Transitions */
    --rn-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--rn-gray);
    background: var(--rn-white);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

.sp-only {
    display: none;
}

/* ========================================
   Header
   ======================================== */
.rn-header {
    position: relative;
    background: var(--rn-dark);
    color: var(--rn-white);
    padding: var(--rn-spacing-xl) var(--rn-spacing-md);
    text-align: center;
    overflow: hidden;
}

.rn-header-bg {
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(255,138,0,0.1), transparent 70%);
    pointer-events: none;
}

.rn-header-inner {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.rn-back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--rn-white);
    text-decoration: none;
    font-size: 0.9rem;
    margin-bottom: var(--rn-spacing-md);
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    transition: var(--rn-transition);
}

.rn-back-link:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateX(-4px);
}

.rn-header-label {
    font-size: 0.85rem;
    letter-spacing: 0.15em;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.5rem;
}

.rn-header-logo {
    max-width: 800px;
    width: 90%;
    height: auto;
    margin: 0 auto var(--rn-spacing-sm);
    display: block;
}

.rn-header-title {
    font-size: 3.5rem;
    font-weight: 900;
    letter-spacing: 0.05em;
    margin-bottom: var(--rn-spacing-sm);
    background: linear-gradient(135deg, var(--rn-primary), var(--rn-primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.rn-header-subtitle {
    font-size: 1.25rem;
    font-weight: 500;
    opacity: 0.9;
}

/* ========================================
   Hero Section
   ======================================== */
.rn-hero {
    background: var(--rn-dark);
    padding: var(--rn-spacing-xxl) var(--rn-spacing-md);
}

.rn-hero-inner {
    max-width: 1000px;
    margin: 0 auto;
}

.rn-hero-images {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
}

.rn-hero-img {
    width: 28%;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    transition: var(--rn-transition);
}

.rn-hero-img:hover {
    transform: translateY(-10px) scale(1.05);
}

.rn-hero-img-main {
    width: 32%;
    z-index: 2;
}

/* ========================================
   About Section
   ======================================== */
.rn-about {
    padding: var(--rn-spacing-xxl) var(--rn-spacing-md);
    background: var(--rn-white);
    text-align: center;
}

.rn-about-inner {
    max-width: 800px;
    margin: 0 auto;
}

.rn-section-title {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: var(--rn-spacing-md);
    color: var(--rn-dark);
    position: relative;
    display: inline-block;
}

.rn-section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--rn-primary), var(--rn-primary-dark));
    border-radius: 2px;
}

.rn-section-lead {
    font-size: 1.125rem;
    line-height: 1.9;
    color: var(--rn-light-gray);
    margin-bottom: var(--rn-spacing-lg);
}

.rn-member-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--rn-primary), var(--rn-primary-dark));
    color: var(--rn-white);
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
    box-shadow: 0 4px 20px rgba(255, 138, 0, 0.3);
}

.rn-member-badge i {
    font-size: 1.25rem;
}

/* ========================================
   Features Section
   ======================================== */
.rn-features {
    padding: var(--rn-spacing-xxl) var(--rn-spacing-md);
    background: var(--rn-bg-light);
}

.rn-features-inner {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.rn-feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--rn-spacing-lg);
    margin-top: var(--rn-spacing-xl);
}

.rn-feature-card {
    background: var(--rn-white);
    padding: var(--rn-spacing-lg);
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    transition: var(--rn-transition);
}

.rn-feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(255, 138, 0, 0.15);
}

.rn-feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--rn-spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--rn-primary), var(--rn-primary-dark));
    color: var(--rn-white);
    border-radius: 50%;
    font-size: 2rem;
    box-shadow: 0 8px 24px rgba(255, 138, 0, 0.3);
}

.rn-feature-title {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: var(--rn-spacing-sm);
    color: var(--rn-dark);
}

.rn-feature-text {
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--rn-light-gray);
}

/* ========================================
   Benefits Section
   ======================================== */
.rn-benefits-section {
    padding: var(--rn-spacing-xxl) var(--rn-spacing-md);
    background: var(--rn-white);
}

.rn-benefits-inner {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.rn-benefit-list {
    margin-top: var(--rn-spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--rn-spacing-lg);
}

.rn-benefit-item {
    display: flex;
    gap: var(--rn-spacing-md);
    text-align: left;
    padding: var(--rn-spacing-lg);
    background: var(--rn-bg-light);
    border-radius: 16px;
    transition: var(--rn-transition);
}

.rn-benefit-item:hover {
    background: #fff;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.rn-benefit-number {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--rn-primary), var(--rn-primary-dark));
    color: var(--rn-white);
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(255, 138, 0, 0.3);
}

.rn-benefit-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--rn-dark);
}

.rn-benefit-text {
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--rn-light-gray);
}

/* ========================================
   CTA Section
   ======================================== */
.rn-cta-section {
    padding: var(--rn-spacing-xxl) var(--rn-spacing-md);
    background: var(--rn-dark);
    color: var(--rn-white);
    text-align: center;
}

.rn-cta-inner {
    max-width: 800px;
    margin: 0 auto;
}

.rn-cta-title {
    font-size: 2rem;
    font-weight: 900;
    margin-bottom: var(--rn-spacing-md);
    line-height: 1.4;
}

.rn-cta-text {
    font-size: 1rem;
    line-height: 1.8;
    opacity: 0.9;
    margin-bottom: var(--rn-spacing-lg);
}

.rn-cta-buttons {
    display: flex;
    gap: var(--rn-spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.rn-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    border-radius: 50px;
    transition: var(--rn-transition);
}

.rn-cta-btn-primary {
    background: linear-gradient(135deg, var(--rn-primary), var(--rn-primary-dark));
    color: var(--rn-white);
    box-shadow: 0 4px 20px rgba(255, 138, 0, 0.4);
}

.rn-cta-btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(255, 138, 0, 0.6);
}

.rn-cta-btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--rn-white);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.rn-cta-btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

/* ========================================
   Footer
   ======================================== */
.rn-footer {
    padding: var(--rn-spacing-lg) var(--rn-spacing-md);
    background: var(--rn-dark-gray);
    color: rgba(255, 255, 255, 0.7);
    text-align: center;
}

.rn-footer-text {
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: var(--rn-spacing-sm);
}

.rn-footer-text strong {
    color: var(--rn-primary);
    font-weight: 700;
}

.rn-footer-note {
    font-size: 0.8rem;
    opacity: 0.6;
    margin-bottom: var(--rn-spacing-sm);
}

.rn-footer-copy {
    font-size: 0.8rem;
    opacity: 0.5;
}

/* ========================================
   Responsive - Tablet
   ======================================== */
@media (max-width: 1024px) {
    .rn-header-title {
        font-size: 3rem;
    }
    
    .rn-feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ========================================
   Responsive - Mobile
   ======================================== */
@media (max-width: 768px) {
    .sp-only {
        display: inline;
    }
    
    .rn-header {
        padding: var(--rn-spacing-lg) var(--rn-spacing-sm);
    }
    
    .rn-header-logo {
        width: 95%;
        max-width: 500px;
    }
    
    .rn-header-title {
        font-size: 2.5rem;
    }
    
    .rn-header-subtitle {
        font-size: 1rem;
    }
    
    .rn-hero {
        padding: var(--rn-spacing-lg) var(--rn-spacing-sm);
    }
    
    .rn-hero-images {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .rn-hero-img,
    .rn-hero-img-main {
        width: 70%;
    }
    
    .rn-about,
    .rn-features,
    .rn-benefits-section,
    .rn-cta-section {
        padding: var(--rn-spacing-lg) var(--rn-spacing-sm);
    }
    
    .rn-section-title {
        font-size: 2rem;
    }
    
    .rn-section-lead {
        font-size: 1rem;
    }
    
    .rn-feature-grid {
        grid-template-columns: 1fr;
        gap: var(--rn-spacing-md);
    }
    
    .rn-benefit-item {
        flex-direction: column;
        text-align: center;
    }
    
    .rn-benefit-number {
        margin: 0 auto;
    }
    
    .rn-cta-title {
        font-size: 1.5rem;
    }
    
    .rn-cta-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .rn-cta-btn {
        justify-content: center;
    }
}