:root {
    --primary-green: #2d5f3f;
    --primary-light: #4a8060;
    --primary-dark: #1a3d28;
    --accent-green: #6bc490;
    --light-green: #e8f5e9;
    --text-dark: #212121;
    --text-gray: #666666;
    --text-light: #999999;
    --bg-light: #f8f9fa;
    --white: #ffffff;
    --border-color: #e0e0e0;
    --shadow: 0 2px 8px rgba(0,0,0,0.1);
    --shadow-hover: 0 4px 16px rgba(0,0,0,0.15);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.15);
}

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

body {
    font-family: 'Noto Serif JP', serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
    overflow-x: hidden;
}

.page-wrapper {
    position: relative;
    width: 100%;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: var(--white);
}

body.menu-open {
    overflow: hidden;
}

body.menu-open .page-wrapper {
    transform: translateX(-300px);
}

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

/* Header & Navigation */
.main-header {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.main-header.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.navbar {
    padding: 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.site-logo {
    height: 50px;
    width: auto;
    transition: transform 0.3s ease;
}

.site-logo:hover {
    transform: scale(1.05);
}

.site-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-green);
    letter-spacing: 0.02em;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    position: relative;
    width: 30px;
    height: 30px;
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--primary-green);
    margin: 6px 0;
    transition: 0.3s;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.nav-toggle span:nth-child(1) { top: 7px; }
.nav-toggle span:nth-child(2) { top: 14px; }
.nav-toggle span:nth-child(3) { top: 21px; }

.nav-toggle.active span:nth-child(1) {
    transform: translateX(-50%) rotate(45deg);
    top: 14px;
}

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

.nav-toggle.active span:nth-child(3) {
    transform: translateX(-50%) rotate(-45deg);
    top: 14px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0;
    margin: 0 0 0 auto;
    padding: 0;
}

.nav-link {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    padding: 0.75rem 1.25rem;
    transition: all 0.3s ease;
    position: relative;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 3px;
    background: var(--primary-green);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-green);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 70%;
}


/* Hero Section - Optimized for 3:1 aspect ratio image */
.hero {
    position: relative;
    background: linear-gradient(to bottom, var(--white), var(--light-green));
}

.hero-bg-image {
    width: 100%;
    height: 350px;
    background-image: url('../images/hero-bg.jpg');
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
    overflow: hidden;
}

.hero-bg-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom,
        transparent 0%,
        transparent 60%,
        rgba(255, 255, 255, 0.5) 80%,
        rgba(255, 255, 255, 0.9) 100%);
}

.hero-overlay {
    display: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 3rem 0 4rem;
    max-width: 1000px;
    margin: 0 auto;
}

.hero-text {
    text-align: center;
    color: var(--primary-dark);
    padding: 0 20px;
    animation: fadeInUp 1s ease-out;
    margin-top: -1rem;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: var(--primary-green);
    color: var(--white);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    margin-bottom: 1.5rem;
    animation: fadeInDown 0.8s ease-out;
}

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

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    margin-bottom: 2rem;
    line-height: 1.1;
}

.hero-title-main {
    display: block;
    color: var(--primary-dark);
    white-space: normal;
}

.hero-title-number,
.hero-title-name {
    display: inline;
}


.event-info {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.event-info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    background: var(--white);
    border-radius: 50px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    color: var(--text-dark);
}

.event-info-item .icon {
    color: var(--primary-green);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-hero-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--primary-green);
    color: var(--white);
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.05rem;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(45, 95, 63, 0.3);
}

.btn-hero-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(45, 95, 63, 0.4);
    background: var(--primary-dark);
}

.btn-hero-primary .btn-icon {
    transition: transform 0.3s ease;
}

.btn-hero-primary:hover .btn-icon {
    transform: translateX(5px);
}

.hero-scroll {
    display: none;
}

@keyframes scrollLine {
    0% { top: -100%; }
    100% { top: 100%; }
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

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

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

.btn-outline {
    background: transparent;
    color: var(--primary-green);
    border: 2px solid var(--primary-green);
}

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

/* Section Styles */
section {
    scroll-margin-top: 70px;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    color: var(--primary-dark);
    margin-bottom: 3rem;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--accent-green);
    margin: 1rem auto 0;
}

/* News Section - ZWEIGHT Style (完全コピー) */
.news-section {
    padding: 80px 0;
    background: #ffffff;
}

.news-header {
    text-align: center;
    margin-bottom: 50px;
}

.news-title {
    font-size: 3rem;
    font-weight: 700;
    color: #000;
    margin-bottom: 15px;
    font-family: 'Outfit', sans-serif;
    position: relative;
}

.news-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: #4CAF50;
    margin: 20px auto 0;
}


.news-filter-tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 40px;
}

.news-filter-tab {
    padding: 12px 24px;
    background: #f5f5f5;
    border: none;
    border-radius: 25px;
    font-size: 0.95rem;
    font-weight: 500;
    color: #666;
    cursor: pointer;
    transition: all 0.3s ease;
}

.news-filter-tab:hover {
    background: #e8e8e8;
}

.news-filter-tab.active {
    background: #4a4a4a;
    color: #fff;
}

.news-list {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.news-list-item {
    display: flex;
    align-items: center;
    padding: 20px 0;
    border-bottom: 1px solid #e5e5e5;
    transition: all 0.3s ease;
    cursor: pointer;
    gap: 20px;
}

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

.news-list-item:hover {
    background-color: #fafafa;
    padding-left: 10px;
    padding-right: 10px;
    margin-left: -10px;
    margin-right: -10px;
}

.news-item-date {
    font-size: 0.9rem;
    color: #999999;
    font-weight: 400;
    min-width: 110px;
    flex-shrink: 0;
    text-align: left;
}

.news-item-category {
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
    min-width: 70px;
    text-align: center;
    flex-shrink: 0;
    background-color: #ffffff;
    color: #333;
    border: 1px solid #ddd;
}

.news-item-category.important {
    background-color: #fff;
    color: #e74c3c;
    border: 1px solid #e74c3c;
}

.news-item-category.announce {
    background-color: #fff;
    color: #333;
    border: 1px solid #ddd;
}

.news-item-category.event {
    background-color: #fff;
    color: #3498db;
    border: 1px solid #3498db;
}

.news-item-content {
    font-size: 1rem;
    color: #333333;
    line-height: 1.5;
    flex: 1;
}

/* News Modal */
.news-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
}

.news-modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.news-modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    background: var(--white);
    border-radius: 20px;
    z-index: 2001;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.news-modal.active {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

.news-modal-header {
    padding: 1rem 1.5rem;
    border-bottom: none;
    display: flex;
    justify-content: flex-end;
    position: absolute;
    top: 0;
    right: 0;
    background: transparent;
    z-index: 10;
}

.news-modal-close {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-gray);
    transition: all 0.3s ease;
    border-radius: 50%;
}

.news-modal-close:hover {
    background: var(--bg-light);
    color: var(--primary-dark);
    transform: rotate(90deg);
}

.news-modal-content {
    padding: 2rem 2rem 2rem 2rem;
    overflow-y: auto;
    flex: 1;
    height: 100%;
}

.modal-news-date {
    color: var(--primary-green);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
    margin-top: 0;
    line-height: 1.5;
}

.modal-news-title {
    font-size: 2rem;
    color: var(--primary-dark);
    margin-bottom: 2rem;
    line-height: 1.3;
}

.modal-news-body {
    color: var(--text-dark);
    line-height: 1.8;
    font-size: 1.05rem;
    white-space: pre-wrap;
}

.modal-news-body p {
    margin-bottom: 1.5rem;
}

.modal-news-body a {
    color: var(--primary-green);
    text-decoration: underline;
    transition: opacity 0.3s ease;
}

.modal-news-body a:hover {
    opacity: 0.8;
    text-decoration: underline;
}

.modal-news-body table {
    width: 100%;
    margin: 20px 0;
}

.modal-news-body h4 {
    margin: 20px 0 10px;
    font-size: 1.2rem;
}

/* Courses Section */
.courses-section {
    padding: 5rem 0;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.course-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    border: 2px solid #e0e0e0;
    transition: all 0.3s ease;
    position: relative;
}

.course-card:hover {
    border-color: var(--primary-green);
    box-shadow: 0 4px 20px rgba(45, 95, 63, 0.15);
}

.course-header {
    background: var(--primary-green);
    padding: 1.5rem;
    color: var(--white);
    border-radius: 10px 10px 0 0;
    text-align: center;
}

.course-name {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.course-distance {
    font-size: 2.5rem;
    font-weight: bold;
}

.course-body {
    padding: 2rem;
    background: var(--white);
}

.course-price {
    font-size: 2.8rem;
    color: var(--text-dark);
    font-weight: 600;
    margin-bottom: 2rem;
    text-align: center;
    font-family: 'Noto Serif JP', serif;
}

.course-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.course-buttons .btn {
    width: 100%;
    text-decoration: none;
    text-align: center;
    padding: 1rem 1.5rem;
    font-size: 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: 500;
}

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

.course-buttons .btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}

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

.course-buttons .btn-secondary:hover {
    background: var(--light-green);
}

/* Aid Station Section */
.aid-section {
    padding: 5rem 0;
}

.aid-content {
    max-width: 1000px;
    margin: 0 auto;
}

.aid-intro {
    text-align: center;
    color: #666;
    margin-bottom: 3rem;
    font-size: 1.1rem;
}

.aid-table-container {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.aid-table {
    width: 100%;
    border-collapse: collapse;
}

.aid-table thead {
    background: var(--primary-green);
    color: white;
}

.aid-table th {
    padding: 1.2rem;
    text-align: left;
    font-weight: 600;
    font-size: 1.1rem;
}

.aid-table th:nth-child(2),
.aid-table th:nth-child(3) {
    text-align: center;
}

.aid-table tbody tr {
    border-bottom: 1px solid #e8eceb;
}

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

.aid-table tbody tr:nth-child(even) {
    background: #f8faf9;
}

.aid-table td {
    padding: 1rem 1.2rem;
    color: #333;
}

.aid-table td:nth-child(2),
.aid-table td:nth-child(3) {
    text-align: center;
}

.course-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
}

.course-badge.long {
    background: #e8f5e9;
    color: var(--primary-green);
}

.course-badge.both {
    background: #fff3e0;
    color: #f57c00;
}

.aid-note {
    text-align: center;
    margin-top: 2rem;
    color: #666;
    font-size: 0.95rem;
}

@media (max-width: 768px) {
    .aid-table {
        font-size: 0.9rem;
    }
    
    .aid-table th,
    .aid-table td {
        padding: 0.8rem;
    }
    
    .aid-table th {
        font-size: 0.95rem;
    }
    
    .course-badge {
        font-size: 0.75rem;
        padding: 3px 8px;
    }
}

/* Guests Section */
.guests-section {
    padding: 5rem 0;
    background: var(--bg-light);
}

.guests-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.guest-card {
    background: var(--white);
    border-radius: 16px;
    padding: 2rem;
    text-align: left;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.guest-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.guest-photo {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: var(--light-green);
    margin: 0 auto 1.5rem;
    overflow: hidden;
    border: 4px solid var(--white);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.guest-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center center;
}

/* 森本さんの画像だけ上部を表示 */
.guest-card:first-child .guest-photo img {
    object-position: center top;
}

.guest-name {
    font-size: 1.5rem;
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
    text-align: center;
}

.guest-title {
    color: var(--primary-green);
    font-weight: 600;
    margin-bottom: 1rem;
    text-align: center;
}

.guest-profile {
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 1.5rem;
    text-align: left;
}

.guest-achievements {
    text-align: left;
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
}

.achievement-item {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.achievement-year {
    color: var(--primary-green);
    font-weight: 600;
    min-width: 60px;
}

/* Sponsors Section */
.sponsors-section {
    padding: 5rem 0;
}

.sponsors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 2rem;
    align-items: center;
    justify-items: center;
}

.sponsor-item {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    width: 100%;
    text-align: center;
}

.sponsor-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.sponsor-logo {
    width: 100%;
    height: auto;
    max-height: 70px;
    object-fit: contain;
}

/* Contact Section */
.contact-section {
    padding: 5rem 0;
    background: var(--bg-light);
}

.contact-content {
    display: flex;
    justify-content: center;
    gap: 4rem;
    max-width: 1000px;
    margin: 0 auto;
    align-items: flex-start;
    padding: 0 2rem;
}

.contact-info {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    text-align: center;
    flex: 0 0 350px;
}

.contact-logo {
    width: 150px;
    height: auto;
    margin: 0 auto 2rem;
    display: block;
}

.contact-info h3 {
    color: var(--primary-dark);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.contact-info p {
    margin: 0.5rem 0;
    color: #666;
}

.phone-link {
    text-decoration: none;
}

.contact-info .phone {
    font-size: 1.5rem;
    color: var(--primary-green);
    font-weight: bold;
    margin: 1rem 0;
    transition: color 0.3s ease;
}

.contact-info .phone:hover {
    color: var(--primary-dark);
}

.contact-form {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    flex: 1;
    max-width: 500px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--primary-dark);
    font-weight: 600;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-green);
    box-shadow: 0 0 0 3px rgba(45, 95, 63, 0.1);
}

.contact-form .btn {
    display: block;
    margin: 1.5rem 0 0 -65px;
    padding: 0.8rem 2.5rem;
}

/* Mobile responsive */
@media (max-width: 768px) {
    .contact-content {
        flex-direction: column;
        align-items: center;
        gap: 2rem;
    }
    
    .contact-info {
        flex: none;
        width: 100%;
        max-width: 400px;
    }
    
    .contact-form {
        width: 100%;
    }
    
    .contact-form .btn {
        margin: 1.5rem auto 0;
    }
}

/* Footer */
.main-footer {
    background: linear-gradient(135deg, #1a3d28 0%, #2d5f3f 100%);
    color: var(--white);
    padding: 3rem 0 1rem;
}

.footer-top {
    text-align: center;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-logo-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.footer-title {
    text-align: center;
}

.footer-content {
    display: flex;
    justify-content: center;
    gap: 6rem;
    margin: 0 auto 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-top h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--white);
}

.footer-section {
    text-align: left;
}

.footer-section h4 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--accent-green);
}

.footer-logo-img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    background: var(--white);
    padding: 3px;
}

.bike-icon {
    width: 50px;
    height: 50px;
    background: var(--accent-green);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.footer-subtitle {
    font-size: 0.9rem;
    opacity: 0.9;
}

.footer-description {
    line-height: 1.6;
    opacity: 0.9;
}

.footer-info {
    list-style: none;
    padding: 0;
}

.footer-info li {
    margin-bottom: 0.75rem;
    opacity: 0.9;
    font-size: 0.95rem;
}

.footer-bottom {
    padding-top: 1rem;
}

.footer-organizers {
    font-size: 0.85rem;
    opacity: 0.8;
    margin-bottom: 1rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.footer-copyright {
    text-align: center;
    font-size: 0.9rem;
    opacity: 0.8;
}

.footer-copyright a {
    color: var(--white);
    text-decoration: none;
    transition: opacity 0.3s;
}

.footer-copyright a:hover {
    opacity: 0.8;
}

/* Hide mobile menu on desktop */
@media (min-width: 769px) {
    .mobile-menu-overlay,
    .mobile-menu {
        display: none !important;
    }
}

/* Mobile Menu Styles */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

body.menu-open .mobile-menu-overlay {
    opacity: 1;
    visibility: visible;
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 300px;
    height: 100vh;
    background: var(--white);
    z-index: 999;
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    box-shadow: -2px 0 20px rgba(0, 0, 0, 0.1);
}

body.menu-open .mobile-menu {
    transform: translateX(0);
}

.mobile-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.mobile-logo {
    height: 40px;
    width: auto;
}

.mobile-menu-close {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-dark);
    transition: transform 0.3s ease;
}

.mobile-menu-close:hover {
    transform: rotate(90deg);
}

.mobile-menu-nav {
    padding: 1rem 0;
}

.mobile-nav-link {
    display: block;
    padding: 1rem 1.5rem;
    color: var(--text-dark);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.mobile-nav-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 0;
    background: var(--primary-green);
    transition: height 0.3s ease;
}

.mobile-nav-link:hover {
    background: var(--light-green);
    color: var(--primary-green);
}

.mobile-nav-link:hover::before {
    height: 60%;
}

/* Responsive for News */
@media (max-width: 768px) {
    .news-section {
        padding: 60px 20px;
    }
    
    .news-header {
        margin-bottom: 30px;
    }
    
    .news-title {
        font-size: 2rem;
    }
    
    
    .news-filter-tabs {
        overflow-x: auto;
        justify-content: center;
        gap: 5px;
        padding: 0 15px;
        margin-bottom: 30px;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        position: relative;
    }
    
    .news-filter-tabs::-webkit-scrollbar {
        display: none;
    }
    
    /* スクロール可能を示すグラデーション */
    .news-filter-tabs::after {
        content: '';
        position: absolute;
        right: 0;
        top: 0;
        bottom: 0;
        width: 30px;
        background: linear-gradient(to right, transparent, rgba(255,255,255,0.9));
        pointer-events: none;
    }
    
    .news-filter-tab {
        padding: 10px 16px;
        font-size: 0.8rem;
        flex-shrink: 0;
        min-width: auto;
    }
    
    .news-list {
        padding: 0 20px;
    }
    
    .news-list-item {
        display: flex;
        flex-direction: row;
        flex-wrap: wrap;
        align-items: flex-start;
        gap: 0;
        padding: 15px 0;
    }
    
    .news-list-item:hover {
        padding: 15px 10px;
    }
    
    .news-item-date {
        min-width: auto;
        font-size: 0.8rem;
        width: auto;
        color: #999;
        margin-right: 17px;
    }
    
    .news-item-category {
        min-width: auto;
        font-size: 0.7rem;
        padding: 3px 10px;
        margin-right: auto;
    }
    
    .news-item-content {
        width: 100%;
        white-space: normal;
        text-overflow: initial;
        font-size: 0.9rem;
        line-height: 1.5;
        word-break: auto-phrase;
        margin-top: 5px;
        flex-basis: 100%;
    }
}

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

    .nav-toggle {
        display: block;
    }

    .nav-menu {
        display: none;
    }

    .hero-bg-image {
        height: 200px;
    }
    
    .hero-content {
        padding: 1.5rem;
    }

    .hero-title {
        font-size: 2rem;
        line-height: 1.3;
    }
    
    .hero-title-main {
        display: block;
        white-space: normal;
        font-size: 1.8rem;
        font-weight: bold;
    }
    
    .hero-title-number {
        display: block;
        margin-bottom: 5px;
    }
    
    .hero-title-name {
        display: block;
    }

    .event-info {
        flex-direction: column;
        gap: 0.8rem;
    }
    
    .event-info-item {
        font-size: 0.9rem;
    }
    
    .hero-buttons {
        margin-top: 1.5rem;
    }
    
    .btn-hero-primary {
        font-size: 0.9rem;
        padding: 0.8rem 1.5rem;
    }

    .courses-grid {
        grid-template-columns: 1fr;
    }

    .contact-content {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 3rem;
    }
    
    .contact-form {
        order: 1;
        width: 100%;
        max-width: 500px;
    }
    
    .contact-info {
        order: 2;
    }

    .footer-content {
        flex-direction: column;
        gap: 2rem;
        align-items: center;
    }
    
    .footer-section {
        text-align: center;
        max-width: 300px;
    }
    
    .footer-top {
        margin-bottom: 2rem;
    }

    .footer-organizers {
        font-size: 0.75rem;
    }
    
    /* ニュースモーダル - モバイル対応 */
    .news-modal {
        width: 95%;
        max-width: none;
        margin: 20px auto;
        max-height: calc(100vh - 40px);
    }
    
    .news-modal-header {
        padding: 1rem;
    }
    
    .news-modal-content {
        padding: 1.5rem;
    }
    
    .modal-news-title {
        font-size: 1.3rem;
    }
    
    .modal-news-body {
        font-size: 0.95rem;
    }
}