/* LP Styling */
@charset “utf-8”;
/* Webフォントを定義 */
@font-face {
  font-family: "HGRGY"; /* フォント名 */
  /* フォーマットごとにパスを指定 */
  src: url("../font/HGRGY.TTC") format("truetype");
}
@font-face {
  font-family: "HGRKK"; /* フォント名 */
  /* フォーマットごとにパスを指定 */
  src: url("../font/HGRKK.TTC") format("truetype");
}

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #ff6b9d;
    --dark-color: #2d3436;
    --light-color: #f5f5f5;
    --text-color: #333333;
    --border-color: #e0e0e0;
    --success-color: #27ae60;
    --warning-color: #f39c12;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background: url("../image/bg.png") no-repeat center center;
    background-size: cover;
    background-attachment: fixed;
    -moz-user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
    user-select: none;
    -webkit-touch-callout: none;
    touch-callout: none;
    touch-action: manipulation;
    overscroll-behavior: none;
}
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: "HGRGY";
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo a {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
    letter-spacing: 2px;
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    gap: 6px;
    z-index: 101;
}

.hamburger span {
    width: 28px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(10px, 10px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

.nav {
    display: flex;
}

.nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav a {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.3s;
    font-weight: 500;
}

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

.nav .cta-link {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 10px 20px;
    border-radius: 25px;
    transition: transform 0.3s;
}

.nav .cta-link:hover {
    transform: translateY(-2px);
}

/* Mobile Menu */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    }

    .nav.active {
        max-height: 500px;
    }

    .nav ul {
        flex-direction: column;
        gap: 0;
        width: 100%;
        padding: 20px 0;
    }

    .nav li {
        width: 100%;
        border-bottom: 1px solid #f0f0f0;
    }

    .nav li:last-child {
        border-bottom: none;
    }

    .nav a {
        display: block;
        padding: 15px 20px;
        color: var(--text-color);
        transition: all 0.3s;
    }

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

    .nav .cta-link {
        margin: 10px 20px;
        padding: 12px 24px;
        display: inline-block;
    }
}

/* Hero Section */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 60px;
    padding: 100px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

/* ヒーロー左側の背景が暗い箇所で文字が見えにくい問題を解消 */
.hero {
    position: relative;
}

.hero::before {
    /* 左側に半透明のダークオーバーレイを追加して文字のコントラストを確保 */
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 55%;
    background: linear-gradient(90deg, rgba(0,0,0,0.65) 0%, rgba(0,0,0,0.25) 60%, rgba(0,0,0,0) 100%);
    z-index: 0;
    pointer-events: none;
    border-radius: 0 0 0 0;
}

.hero-content h1 {
    font-size: 48px;
    line-height: 1.3;
    margin-bottom: 20px;
    color: #ffffff;
    text-shadow: 0 6px 18px rgba(0,0,0,0.5);
}

.hero-content .subtitle {
    color: var(--primary-color);
    font-size: 36px;
}

.hero-description {
    font-size: 18px;
    color: rgba(255,255,255,0.92);
    margin-bottom: 30px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

.btn {
    padding: 14px 28px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.btn-primary, .btn-secondary {
    z-index: 2;
}

.btn-secondary {
    background: rgba(255,255,255,0.95);
    color: var(--primary-color);
    border: 2px solid rgba(255,255,255,0.6);
}

.hero-content, .hero-content * {
    position: relative;
    z-index: 2; /* オーバーレイの上に表示 */
}

/* モバイルではオーバーレイ幅を広げすぎない */
@media (max-width: 768px) {
    .hero::before {
        width: 100%;
        background: linear-gradient(180deg, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.45) 40%, rgba(0,0,0,0.15) 80%);
    }
    .hero {
        grid-template-columns: 1fr;
        padding: 60px 18px;
    }
    .hero-image {
        order: 2;
        width: 100%;
    }
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

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

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

.btn-large {
    padding: 18px 40px;
    font-size: 18px;
}

.hero-visual {
    position: relative;
}

.hero-image {
    width: 100%;
    padding-bottom: 66.25%;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    background: url("../image/lp-header.avif") no-repeat center/cover;
}

/* Section Styling */
.section {
    padding: 80px 20px;
}

.section h2 {
    font-size: 42px;
    margin-bottom: 50px;
    text-align: center;
    color: var(--dark-color);
    position: relative;
    padding-bottom: 20px;
    background: rgba(255,255,255,0.88);
    padding: 12px 20px;
    border-radius: 28px;
    box-shadow: 0 6px 18px rgba(0,0,0,0.12);
    margin-left: auto;
    margin-right: auto;
}

.section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

/* CTAセクションは暗い背景なので見出しを白くする */
.cta-section h2 {
    background: transparent;
    color: white;
    padding: 0;
    border-radius: 0;
    box-shadow: none;
}

/* Project Overview */
.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.overview-item {
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
}

.overview-item:hover {
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.1);
    transform: translateY(-5px);
}

.overview-item h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.overview-item p {
    color: #666;
    font-size: 16px;
    line-height: 1.6;
}

/* Concept Section */
.concept {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
}

.concept-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px;
    background-color: rgba(255,255,255,0.5);
}

.concept-text h3 {
    font-size: 28px;
    line-height: 1.5;
    margin-bottom: 30px;
    color: var(--dark-color);
}

.concept-text p {
    font-size: 16px;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.8;
}

/* Exhibition Details */
.details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.detail-item {
    background: white;
    border-left: 5px solid var(--primary-color);
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.detail-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.detail-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 15px;
}

.detail-item h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--dark-color);
}

.detail-item p {
    color: #666;
    line-height: 1.6;
}

/* Why Project Section */
.why-project {
    background: linear-gradient(135deg, #f5f7ff 0%, #faf5ff 100%);
}

.why-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.why-item {
    background: white;
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.why-item h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.why-item p {
    color: #666;
    line-height: 1.7;
}

/* Fund Usage */
.fund-breakdown {
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    margin: 40px 0;
}

.fund-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    border-bottom: 1px solid var(--border-color);
    font-size: 16px;
}

.fund-item:last-child {
    border-bottom: none;
}

.fund-item.total {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    font-weight: bold;
    font-size: 18px;
}

.fund-label {
    color: var(--text-color);
    font-weight: 600;
}

.fund-amount {
    color: var(--primary-color);
    font-weight: bold;
    font-size: 18px;
}

.fund-note {
    text-align: center;
    color: #999;
    font-size: 14px;
    margin-top: 20px;

    background: #f0f4ff;
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

/* Timeline */
.timeline {
    margin-top: 40px;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
}

.timeline-item {
    margin-bottom: 40px;
    margin-left: 120px;
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -90px;
    top: 0;
    width: 20px;
    height: 20px;
    background: white;
    border: 3px solid var(--primary-color);
    border-radius: 50%;
}

.timeline-date {
    font-weight: bold;
    color: var(--primary-color);
    font-size: 16px;
    margin-bottom: 8px;
}

.timeline-content h4 {
    font-size: 18px;
    color: var(--dark-color);
    margin-bottom: 8px;
}

.timeline-content p {
    color: #666;
    font-size: 14px;
}

/* タイムライン項目をカード化して可読性を向上 */
.timeline-content {
    background: rgba(255,255,255,0.94);
    padding: 18px 20px;
    border-radius: 10px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.08);
    color: var(--text-color);
    max-width: 740px;
}

.timeline-item::before {
    /* マーカーを少し右に寄せてカードと重ならないよう調整 */
    left: -100px;
}

/* ダーク背景の上に表示される箇所ではさらにコントラストを確保 */
@media (min-width: 900px) {
    .section.concept .concept-text, .section.why-project .why-content {
        background: rgba(255,255,255,0.92);
        padding: 18px;
        border-radius: 12px;
    }
}

/* Returns Grid */
.returns-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.return-card {
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.return-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.return-card-largest {
    grid-column: 1 / -1;
    max-width: 100%;
}

.return-price {
    font-size: 32px;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.return-card-largest .return-price {
    color: white;
}

.return-card h3 {
    font-size: 20px;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.return-card-largest h3 {
    color: white;
}

.return-content {
    text-align: left;
    font-size: 14px;
    line-height: 1.8;
    color: #666;
}

.return-card-largest .return-content {
    color: rgba(255, 255, 255, 0.9);
}

/* Creator Section */
.creator {
    background: linear-gradient(135deg, #f0f4ff 0%, #fff0f5 100%);
}

.creator-content {
    max-width: 800px;
    margin: 0 auto 40px;
}

.creator-profile {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 40px;
    align-items: start;
}

.creator-avatar {
    width: 180px;
    height: 180px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.creator-avatar img{
    width: 100%;
    height: 100%;
    border-radius: 20px;
    object-fit: cover;
}
.creator-info h3 {
    font-size: 24px;
    color: var(--dark-color);
    margin-bottom: 8px;
}

.creator-title {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 15px;
}

.creator-bio {
    color: #666;
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.creator-links {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.creator-links a {
    display: inline-block;
    padding: 8px 16px;
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    border-radius: 6px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s;
}

.creator-links a:hover {
    background: var(--primary-color);
    color: white;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    text-align: center;
}

.cta-section h2 {
    color: white;
    margin-bottom: 30px;
}

.cta-section h2::after {
    background: white;
}

.cta-section p {
    font-size: 18px;
    margin-bottom: 20px;
    line-height: 1.8;
}

.cta-section .btn {
    background: white;
    color: var(--primary-color);
    margin-top: 20px;
}

.cta-section .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

.cta-note {
    font-size: 14px;
    margin-top: 20px;
    opacity: 0.9;
}

/* FAQ Section */
.faq {
    background: white;
}

.faq-items {
    max-width: 800px;
    margin: 0 auto;
    display: grid;
    gap: 25px;
}

.faq-item {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 25px;
    transition: all 0.3s;
}

.faq-item:hover {
    border-color: var(--primary-color);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.1);
}

.faq-item h3 {
    font-size: 16px;
    color: var(--primary-color);
    margin-bottom: 12px;
    font-weight: 600;
}

.faq-item p {
    color: #666;
    font-size: 14px;
    line-height: 1.6;
}

/* Footer */
.footer {
    background: var(--dark-color);
    color: white;
    padding: 60px 20px 30px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: white;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    line-height: 1.8;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 900px) {
    .hero {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 60px 20px;
    }

    .hero-content h1 {
        font-size: 36px;
    }

    .hero-content .subtitle {
        font-size: 28px;
    }

    .nav ul {
        gap: 15px;
    }

    .nav a {
        font-size: 14px;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 50px 20px;
    }

    .section h2 {
        font-size: 32px;
        margin-bottom: 30px;
    }

    .hero-content h1 {
        font-size: 28px;
    }

    .hero-content .subtitle {
        font-size: 22px;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .return-card-largest {
        grid-column: 1;
    }

    .creator-profile {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .creator-avatar {
        width: 150px;
        height: 150px;
        margin: 0 auto;
    }

    .timeline-item {
        margin-left: 40px;
    }

    .timeline-item::before {
        left: -40px;
    }

    .timeline::before {
        left: 10px;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 24px;
    }

    .hero-content .subtitle {
        font-size: 18px;
    }

    .section h2 {
        font-size: 24px;
    }

    .overview-grid,
    .details-grid,
    .returns-grid {
        grid-template-columns: 1fr;
    }

    .hero-buttons {
        gap: 10px;
    }

    .fund-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .nav ul {
        flex-direction: column;
        gap: 8px;
    }

    .container {
        padding: 0 15px;
    }
}

/* Sponsors Section */
.sponsors {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
}

.sponsors-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
}

.sponsor-item {
    background: white;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    font-size: 14px;
    color: var(--dark-color);
    border-left: 4px solid var(--primary-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.sponsor-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

@media (max-width: 768px) {
    .sponsors-list {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
}