/* ========================================
   INVESTMATE - β募集用LP
   Minimal, Honest, Invitation-style
   ======================================== */

/* Variables */
:root {
    --color-primary: #1a2f4a;
    --color-primary-light: #2d4a6f;
    --color-accent: #c9a86c;
    --color-text: #2c2c2c;
    --color-text-light: #666666;
    --color-text-muted: #999999;
    --color-bg: #ffffff;
    --color-bg-light: #f9f9f7;
    --color-bg-alt: #f4f4f2;
    --color-border: #e5e5e5;
    
    --font-sans: 'Noto Sans JP', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 48px;
    --space-xl: 80px;
    
    --transition: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 17px;
}

body {
    font-family: var(--font-sans);
    font-weight: 400;
    line-height: 2;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 680px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--color-border);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
    max-width: 900px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--color-primary);
}

.logo-icon {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.header-badge {
    font-size: 11px;
    font-weight: 600;
    color: var(--color-accent);
    padding: 4px 12px;
    border: 1px solid var(--color-accent);
    border-radius: 20px;
    letter-spacing: 0.5px;
}

/* Hero */
.hero {
    padding: 140px 0 var(--space-xl);
    text-align: center;
    background: var(--color-bg);
}

.hero-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--color-text-muted);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: var(--space-md);
}

.hero-title {
    font-size: clamp(26px, 6vw, 36px);
    font-weight: 600;
    line-height: 1.6;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

.hero-sub {
    font-size: 14px;
    color: var(--color-text-light);
    letter-spacing: 1px;
}

/* Section */
.section {
    padding: var(--space-xl) 0;
}

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

.section-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-muted);
    letter-spacing: 2px;
    margin-bottom: var(--space-lg);
    text-align: center;
}

/* What Box */
.what-box {
    text-align: center;
}

.what-box p {
    font-size: 18px;
    line-height: 2;
    margin-bottom: var(--space-md);
}

.what-sub {
    font-size: 15px !important;
    color: var(--color-text-light);
}

.what-note {
    font-size: 15px !important;
    color: var(--color-primary);
    padding: var(--space-md);
    background: var(--color-bg-light);
    border-left: 3px solid var(--color-accent);
    text-align: left;
    margin-top: var(--space-lg);
}

/* Change List */
.change-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.change-list li {
    text-align: center;
}

.change-label {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-primary);
    letter-spacing: 1px;
    padding: 4px 16px;
    background: white;
    border-radius: 20px;
    margin-bottom: var(--space-sm);
}

.change-list p {
    font-size: 17px;
    color: var(--color-text);
    line-height: 1.8;
}

/* Beta Info */
.beta-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.beta-block h3 {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-primary);
    letter-spacing: 1px;
    margin-bottom: var(--space-sm);
    padding-bottom: var(--space-xs);
    border-bottom: 1px solid var(--color-border);
}

.beta-block ul {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.beta-block li {
    font-size: 15px;
    color: var(--color-text);
    padding-left: 20px;
    position: relative;
}

.beta-block li::before {
    content: "・";
    position: absolute;
    left: 0;
    color: var(--color-text-muted);
}

.caution-list li {
    color: var(--color-text-light);
    font-size: 14px;
}

.caution-list li::before {
    content: "※";
    color: var(--color-text-muted);
}

/* Beta Table */
.beta-table {
    width: 100%;
    border-collapse: collapse;
}

.beta-table tr {
    border-bottom: 1px solid var(--color-border);
}

.beta-table tr:last-child {
    border-bottom: none;
}

.beta-table th,
.beta-table td {
    padding: 12px 0;
    font-size: 15px;
    text-align: left;
}

.beta-table th {
    width: 120px;
    color: var(--color-text-light);
    font-weight: 400;
}

.beta-table td {
    color: var(--color-text);
}

/* Message */
.section-message {
    background: var(--color-primary);
    color: white;
    padding: var(--space-xl) 0;
}

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

.message-box p {
    font-size: 16px;
    line-height: 2;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--space-md);
}

.message-main {
    font-size: 20px !important;
    font-weight: 500;
    color: white !important;
    margin: var(--space-lg) 0 !important;
}

.message-ask {
    font-size: 15px !important;
    color: rgba(255, 255, 255, 0.7) !important;
}

/* CTA */
.section-cta {
    padding: var(--space-xl) 0;
    text-align: center;
    background: var(--color-bg-light);
}

.cta-button {
    display: inline-block;
    padding: 18px 48px;
    font-size: 16px;
    font-weight: 600;
    color: white;
    background: var(--color-primary);
    border-radius: 6px;
    transition: var(--transition);
}

.cta-button:hover {
    background: var(--color-primary-light);
    transform: translateY(-2px);
}

.cta-note {
    margin-top: var(--space-md);
    font-size: 13px;
    color: var(--color-text-muted);
    font-style: italic;
}

.cta-limit {
    margin-top: var(--space-sm);
    font-size: 16px;
    font-weight: 500;
    color: var(--color-primary);
    letter-spacing: 1px;
}

/* Footer */
.footer {
    padding: var(--space-lg) 0;
    background: var(--color-bg);
    text-align: center;
    border-top: 1px solid var(--color-border);
}

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
}

.footer-logo-icon {
    width: 28px;
    height: 28px;
    object-fit: contain;
}

.footer-company {
    font-size: 12px;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.footer-nav {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
    margin-bottom: var(--space-md);
}

.footer-nav a {
    font-size: 12px;
    color: var(--color-text-light);
}

.footer-nav a:hover {
    color: var(--color-primary);
}

.footer-copyright {
    font-size: 11px;
    color: var(--color-text-muted);
}

/* Responsive */
@media (max-width: 600px) {
    :root {
        --space-xl: 60px;
        --space-lg: 36px;
    }
    
    .hero {
        padding: 120px 0 var(--space-lg);
    }
    
    .hero-title {
        font-size: 24px;
    }
    
    .beta-table th {
        width: 100px;
    }
    
    .footer-nav {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .cta-button {
        padding: 16px 36px;
        font-size: 15px;
    }
}